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1b83407ce9
This patch was automatically generated by the following script: #!/bin/bash # Command to convert PRUnichar to char16_t function convert() { echo "Converting $1 to $2..." find . ! -wholename "*nsprpub*" \ ! -wholename "*security/nss*" \ ! -wholename "*modules/libmar*" \ ! -wholename "*/.hg*" \ ! -wholename "obj-ff-dbg*" \ ! -name prtypes.h \ ! -name Char16.h \ -type f \ \( -iname "*.cpp" \ -o -iname "*.h" \ -o -iname "*.c" \ -o -iname "*.cc" \ -o -iname "*.idl" \ -o -iname "*.ipdl" \ -o -iname "*.ipdlh" \ -o -iname "*.mm" \) | \ xargs -n 1 sed -i -e "s/\b$1\b/$2/g" } convert PRUnichar char16_t
12950 lines
413 KiB
C++
12950 lines
413 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=2 et sw=2 tw=78: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* parsing of CSS stylesheets, based on a token stream from the CSS scanner */
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#include "mozilla/DebugOnly.h"
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#include "nsCSSParser.h"
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#include "nsCSSProps.h"
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#include "nsCSSKeywords.h"
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#include "nsCSSScanner.h"
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#include "mozilla/css/ErrorReporter.h"
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#include "mozilla/css/Loader.h"
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#include "mozilla/css/StyleRule.h"
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#include "mozilla/css/ImportRule.h"
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#include "nsCSSRules.h"
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#include "mozilla/css/NameSpaceRule.h"
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#include "nsTArray.h"
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#include "nsCSSStyleSheet.h"
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#include "mozilla/css/Declaration.h"
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#include "nsStyleConsts.h"
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#include "nsNetUtil.h"
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#include "nsCOMPtr.h"
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#include "nsString.h"
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#include "nsIAtom.h"
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#include "nsColor.h"
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#include "nsCSSPseudoClasses.h"
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#include "nsCSSPseudoElements.h"
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#include "nsINameSpaceManager.h"
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#include "nsXMLNameSpaceMap.h"
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#include "nsError.h"
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#include "nsIMediaList.h"
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#include "nsStyleUtil.h"
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#include "nsIPrincipal.h"
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#include "prprf.h"
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#include "nsContentUtils.h"
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#include "nsAutoPtr.h"
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#include "CSSCalc.h"
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#include "nsMediaFeatures.h"
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#include "nsLayoutUtils.h"
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#include "mozilla/Preferences.h"
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#include "nsRuleData.h"
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#include "mozilla/CSSVariableValues.h"
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using namespace mozilla;
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const uint32_t
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nsCSSProps::kParserVariantTable[eCSSProperty_COUNT_no_shorthands] = {
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#define CSS_PROP(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, \
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stylestruct_, stylestructoffset_, animtype_) \
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parsevariant_,
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#include "nsCSSPropList.h"
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#undef CSS_PROP
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};
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// Length of the "var-" prefix of custom property names.
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#define VAR_PREFIX_LENGTH 4
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namespace {
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// Rule processing function
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typedef void (* RuleAppendFunc) (css::Rule* aRule, void* aData);
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static void AssignRuleToPointer(css::Rule* aRule, void* aPointer);
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static void AppendRuleToSheet(css::Rule* aRule, void* aParser);
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struct CSSParserInputState {
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nsCSSScannerPosition mPosition;
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nsCSSToken mToken;
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bool mHavePushBack;
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};
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// Your basic top-down recursive descent style parser
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// The exposed methods and members of this class are precisely those
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// needed by nsCSSParser, far below.
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class CSSParserImpl {
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public:
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CSSParserImpl();
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~CSSParserImpl();
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nsresult SetStyleSheet(nsCSSStyleSheet* aSheet);
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nsresult SetQuirkMode(bool aQuirkMode);
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nsresult SetChildLoader(mozilla::css::Loader* aChildLoader);
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// Clears everything set by the above Set*() functions.
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void Reset();
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nsresult ParseSheet(const nsAString& aInput,
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nsIURI* aSheetURI,
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nsIURI* aBaseURI,
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nsIPrincipal* aSheetPrincipal,
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uint32_t aLineNumber,
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bool aAllowUnsafeRules);
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nsresult ParseStyleAttribute(const nsAString& aAttributeValue,
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nsIURI* aDocURL,
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nsIURI* aBaseURL,
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nsIPrincipal* aNodePrincipal,
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css::StyleRule** aResult);
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nsresult ParseDeclarations(const nsAString& aBuffer,
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nsIURI* aSheetURL,
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nsIURI* aBaseURL,
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nsIPrincipal* aSheetPrincipal,
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css::Declaration* aDeclaration,
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bool* aChanged);
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nsresult ParseRule(const nsAString& aRule,
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nsIURI* aSheetURL,
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nsIURI* aBaseURL,
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nsIPrincipal* aSheetPrincipal,
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css::Rule** aResult);
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nsresult ParseProperty(const nsCSSProperty aPropID,
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const nsAString& aPropValue,
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nsIURI* aSheetURL,
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nsIURI* aBaseURL,
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nsIPrincipal* aSheetPrincipal,
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css::Declaration* aDeclaration,
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bool* aChanged,
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bool aIsImportant,
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bool aIsSVGMode);
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void ParseMediaList(const nsSubstring& aBuffer,
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nsIURI* aURL, // for error reporting
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uint32_t aLineNumber, // for error reporting
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nsMediaList* aMediaList,
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bool aHTMLMode);
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nsresult ParseVariable(const nsAString& aVariableName,
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const nsAString& aPropValue,
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nsIURI* aSheetURL,
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nsIURI* aBaseURL,
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nsIPrincipal* aSheetPrincipal,
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css::Declaration* aDeclaration,
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bool* aChanged,
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bool aIsImportant);
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bool ParseColorString(const nsSubstring& aBuffer,
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nsIURI* aURL, // for error reporting
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uint32_t aLineNumber, // for error reporting
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nsCSSValue& aValue);
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nsresult ParseSelectorString(const nsSubstring& aSelectorString,
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nsIURI* aURL, // for error reporting
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uint32_t aLineNumber, // for error reporting
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nsCSSSelectorList **aSelectorList);
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already_AddRefed<nsCSSKeyframeRule>
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ParseKeyframeRule(const nsSubstring& aBuffer,
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nsIURI* aURL,
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uint32_t aLineNumber);
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bool ParseKeyframeSelectorString(const nsSubstring& aSelectorString,
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nsIURI* aURL, // for error reporting
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uint32_t aLineNumber, // for error reporting
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InfallibleTArray<float>& aSelectorList);
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bool EvaluateSupportsDeclaration(const nsAString& aProperty,
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const nsAString& aValue,
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nsIURI* aDocURL,
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nsIURI* aBaseURL,
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nsIPrincipal* aDocPrincipal);
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bool EvaluateSupportsCondition(const nsAString& aCondition,
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nsIURI* aDocURL,
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nsIURI* aBaseURL,
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nsIPrincipal* aDocPrincipal);
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typedef nsCSSParser::VariableEnumFunc VariableEnumFunc;
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/**
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* Parses a CSS token stream value and invokes a callback function for each
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* variable reference that is encountered.
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*
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* @param aPropertyValue The CSS token stream value.
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* @param aFunc The callback function to invoke; its parameters are the
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* variable name found and the aData argument passed in to this function.
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* @param aData User data to pass in to the callback.
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* @return Whether aPropertyValue could be parsed as a valid CSS token stream
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* value (e.g., without syntactic errors in variable references).
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*/
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bool EnumerateVariableReferences(const nsAString& aPropertyValue,
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VariableEnumFunc aFunc,
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void* aData);
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/**
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* Parses aPropertyValue as a CSS token stream value and resolves any
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* variable references using the variables in aVariables.
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*
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* @param aPropertyValue The CSS token stream value.
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* @param aVariables The set of variable values to use when resolving variable
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* references.
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* @param aResult Out parameter that gets the resolved value.
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* @param aFirstToken Out parameter that gets the type of the first token in
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* aResult.
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* @param aLastToken Out parameter that gets the type of the last token in
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* aResult.
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* @return Whether aResult could be parsed successfully and variable reference
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* substitution succeeded.
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*/
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bool ResolveVariableValue(const nsAString& aPropertyValue,
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const CSSVariableValues* aVariables,
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nsString& aResult,
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nsCSSTokenSerializationType& aFirstToken,
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nsCSSTokenSerializationType& aLastToken);
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/**
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* Parses a string as a CSS token stream value for particular property,
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* resolving any variable references. The parsed property value is stored
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* in the specified nsRuleData object. If aShorthandPropertyID has a value
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* other than eCSSProperty_UNKNOWN, this is the property that will be parsed;
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* otherwise, aPropertyID will be parsed. Either way, only aPropertyID,
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* a longhand property, will be copied over to the rule data.
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*
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* If the property cannot be parsed, it will be treated as if 'initial' or
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* 'inherit' were specified, for non-inherited and inherited properties
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* respectively.
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*
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* @param aPropertyID The ID of the longhand property whose value is to be
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* copied to the rule data.
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* @param aShorthandPropertyID The ID of the shorthand property to be parsed.
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* If a longhand property is to be parsed, aPropertyID is that property,
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* and aShorthandPropertyID must be eCSSProperty_UNKNOWN.
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* @param aValue The CSS token stream value.
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* @param aVariables The set of variable values to use when resolving variable
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* references.
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* @param aRuleData The rule data object into which parsed property value for
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* aPropertyID will be stored.
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*/
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void ParsePropertyWithVariableReferences(nsCSSProperty aPropertyID,
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nsCSSProperty aShorthandPropertyID,
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const nsAString& aValue,
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const CSSVariableValues* aVariables,
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nsRuleData* aRuleData,
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nsIURI* aDocURL,
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nsIURI* aBaseURL,
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nsIPrincipal* aDocPrincipal,
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nsCSSStyleSheet* aSheet,
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uint32_t aLineNumber,
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uint32_t aLineOffset);
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protected:
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class nsAutoParseCompoundProperty;
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friend class nsAutoParseCompoundProperty;
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class nsAutoFailingSupportsRule;
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friend class nsAutoFailingSupportsRule;
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class nsAutoSuppressErrors;
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friend class nsAutoSuppressErrors;
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void AppendRule(css::Rule* aRule);
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friend void AppendRuleToSheet(css::Rule*, void*); // calls AppendRule
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/**
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* This helper class automatically calls SetParsingCompoundProperty in its
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* constructor and takes care of resetting it to false in its destructor.
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*/
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class nsAutoParseCompoundProperty {
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public:
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nsAutoParseCompoundProperty(CSSParserImpl* aParser) : mParser(aParser)
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{
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NS_ASSERTION(!aParser->IsParsingCompoundProperty(),
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"already parsing compound property");
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NS_ASSERTION(aParser, "Null parser?");
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aParser->SetParsingCompoundProperty(true);
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}
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~nsAutoParseCompoundProperty()
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{
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mParser->SetParsingCompoundProperty(false);
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}
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private:
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CSSParserImpl* mParser;
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};
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/**
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* This helper class conditionally sets mInFailingSupportsRule to
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* true if aCondition = false, and resets it to its original value in its
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* destructor. If we are already somewhere within a failing @supports
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* rule, passing in aCondition = true does not change mInFailingSupportsRule.
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*/
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class nsAutoFailingSupportsRule {
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public:
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nsAutoFailingSupportsRule(CSSParserImpl* aParser,
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bool aCondition)
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: mParser(aParser),
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mOriginalValue(aParser->mInFailingSupportsRule)
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{
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if (!aCondition) {
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mParser->mInFailingSupportsRule = true;
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}
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}
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~nsAutoFailingSupportsRule()
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{
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mParser->mInFailingSupportsRule = mOriginalValue;
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}
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private:
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CSSParserImpl* mParser;
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bool mOriginalValue;
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};
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/**
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* Auto class to set aParser->mSuppressErrors to the specified value
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* and restore it to its original value later.
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*/
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class nsAutoSuppressErrors {
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public:
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nsAutoSuppressErrors(CSSParserImpl* aParser,
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bool aSuppressErrors = true)
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: mParser(aParser),
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mOriginalValue(aParser->mSuppressErrors)
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{
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mParser->mSuppressErrors = aSuppressErrors;
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}
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~nsAutoSuppressErrors()
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{
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mParser->mSuppressErrors = mOriginalValue;
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}
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private:
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CSSParserImpl* mParser;
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bool mOriginalValue;
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};
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// the caller must hold on to aString until parsing is done
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void InitScanner(nsCSSScanner& aScanner,
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css::ErrorReporter& aReporter,
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nsIURI* aSheetURI, nsIURI* aBaseURI,
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nsIPrincipal* aSheetPrincipal);
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void ReleaseScanner(void);
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bool IsSVGMode() const {
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return mScanner->IsSVGMode();
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}
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/**
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* Saves the current input state, which includes any currently pushed
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* back token, and the current position of the scanner.
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*/
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void SaveInputState(CSSParserInputState& aState);
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/**
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* Restores the saved input state by pushing back any saved pushback
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* token and calling RestoreSavedPosition on the scanner.
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*/
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void RestoreSavedInputState(const CSSParserInputState& aState);
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bool GetToken(bool aSkipWS);
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void UngetToken();
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bool GetNextTokenLocation(bool aSkipWS, uint32_t *linenum, uint32_t *colnum);
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bool ExpectSymbol(char16_t aSymbol, bool aSkipWS);
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bool ExpectEndProperty();
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bool CheckEndProperty();
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nsSubstring* NextIdent();
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// returns true when the stop symbol is found, and false for EOF
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bool SkipUntil(char16_t aStopSymbol);
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void SkipUntilOneOf(const char16_t* aStopSymbolChars);
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// For each character in aStopSymbolChars from the end of the array
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// to the start, calls SkipUntil with that character.
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typedef nsAutoTArray<char16_t, 16> StopSymbolCharStack;
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void SkipUntilAllOf(const StopSymbolCharStack& aStopSymbolChars);
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// returns true if the stop symbol or EOF is found, and false for an
|
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// unexpected ')', ']' or '}'; this not safe to call outside variable
|
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// resolution, as it doesn't handle mismatched content
|
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bool SkipBalancedContentUntil(char16_t aStopSymbol);
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|
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void SkipRuleSet(bool aInsideBraces);
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bool SkipAtRule(bool aInsideBlock);
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bool SkipDeclaration(bool aCheckForBraces);
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|
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void PushGroup(css::GroupRule* aRule);
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void PopGroup();
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||
|
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bool ParseRuleSet(RuleAppendFunc aAppendFunc, void* aProcessData,
|
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bool aInsideBraces = false);
|
||
bool ParseAtRule(RuleAppendFunc aAppendFunc, void* aProcessData,
|
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bool aInAtRule);
|
||
bool ParseCharsetRule(RuleAppendFunc aAppendFunc, void* aProcessData);
|
||
bool ParseImportRule(RuleAppendFunc aAppendFunc, void* aProcessData);
|
||
bool ParseURLOrString(nsString& aURL);
|
||
bool GatherMedia(nsMediaList* aMedia,
|
||
bool aInAtRule);
|
||
bool ParseMediaQuery(bool aInAtRule, nsMediaQuery **aQuery,
|
||
bool *aHitStop);
|
||
bool ParseMediaQueryExpression(nsMediaQuery* aQuery);
|
||
void ProcessImport(const nsString& aURLSpec,
|
||
nsMediaList* aMedia,
|
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RuleAppendFunc aAppendFunc,
|
||
void* aProcessData);
|
||
bool ParseGroupRule(css::GroupRule* aRule, RuleAppendFunc aAppendFunc,
|
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void* aProcessData);
|
||
bool ParseMediaRule(RuleAppendFunc aAppendFunc, void* aProcessData);
|
||
bool ParseMozDocumentRule(RuleAppendFunc aAppendFunc, void* aProcessData);
|
||
bool ParseNameSpaceRule(RuleAppendFunc aAppendFunc, void* aProcessData);
|
||
void ProcessNameSpace(const nsString& aPrefix,
|
||
const nsString& aURLSpec, RuleAppendFunc aAppendFunc,
|
||
void* aProcessData);
|
||
|
||
bool ParseFontFaceRule(RuleAppendFunc aAppendFunc, void* aProcessData);
|
||
bool ParseFontFeatureValuesRule(RuleAppendFunc aAppendFunc,
|
||
void* aProcessData);
|
||
bool ParseFontFeatureValueSet(nsCSSFontFeatureValuesRule *aRule);
|
||
bool ParseFontDescriptor(nsCSSFontFaceRule* aRule);
|
||
bool ParseFontDescriptorValue(nsCSSFontDesc aDescID,
|
||
nsCSSValue& aValue);
|
||
|
||
bool ParsePageRule(RuleAppendFunc aAppendFunc, void* aProcessData);
|
||
bool ParseKeyframesRule(RuleAppendFunc aAppendFunc, void* aProcessData);
|
||
already_AddRefed<nsCSSKeyframeRule> ParseKeyframeRule();
|
||
bool ParseKeyframeSelectorList(InfallibleTArray<float>& aSelectorList);
|
||
|
||
bool ParseSupportsRule(RuleAppendFunc aAppendFunc, void* aProcessData);
|
||
bool ParseSupportsCondition(bool& aConditionMet);
|
||
bool ParseSupportsConditionNegation(bool& aConditionMet);
|
||
bool ParseSupportsConditionInParens(bool& aConditionMet);
|
||
bool ParseSupportsConditionInParensInsideParens(bool& aConditionMet);
|
||
bool ParseSupportsConditionTerms(bool& aConditionMet);
|
||
enum SupportsConditionTermOperator { eAnd, eOr };
|
||
bool ParseSupportsConditionTermsAfterOperator(
|
||
bool& aConditionMet,
|
||
SupportsConditionTermOperator aOperator);
|
||
|
||
/**
|
||
* Parses the current input stream for a CSS token stream value and resolves
|
||
* any variable references using the variables in aVariables.
|
||
*
|
||
* @param aVariables The set of variable values to use when resolving variable
|
||
* references.
|
||
* @param aResult Out parameter that, if the function returns true, will be
|
||
* replaced with the resolved value.
|
||
* @return Whether aResult could be parsed successfully and variable reference
|
||
* substitution succeeded.
|
||
*/
|
||
bool ResolveValueWithVariableReferences(
|
||
const CSSVariableValues* aVariables,
|
||
nsString& aResult,
|
||
nsCSSTokenSerializationType& aResultFirstToken,
|
||
nsCSSTokenSerializationType& aResultLastToken);
|
||
// Helper function for ResolveValueWithVariableReferences.
|
||
bool ResolveValueWithVariableReferencesRec(
|
||
nsString& aResult,
|
||
nsCSSTokenSerializationType& aResultFirstToken,
|
||
nsCSSTokenSerializationType& aResultLastToken,
|
||
const CSSVariableValues* aVariables);
|
||
|
||
enum nsSelectorParsingStatus {
|
||
// we have parsed a selector and we saw a token that cannot be
|
||
// part of a selector:
|
||
eSelectorParsingStatus_Done,
|
||
// we should continue parsing the selector:
|
||
eSelectorParsingStatus_Continue,
|
||
// we saw an unexpected token or token value,
|
||
// or we saw end-of-file with an unfinished selector:
|
||
eSelectorParsingStatus_Error
|
||
};
|
||
nsSelectorParsingStatus ParseIDSelector(int32_t& aDataMask,
|
||
nsCSSSelector& aSelector);
|
||
|
||
nsSelectorParsingStatus ParseClassSelector(int32_t& aDataMask,
|
||
nsCSSSelector& aSelector);
|
||
|
||
// aPseudoElement and aPseudoElementArgs are the location where
|
||
// pseudo-elements (as opposed to pseudo-classes) are stored;
|
||
// pseudo-classes are stored on aSelector. aPseudoElement and
|
||
// aPseudoElementArgs must be non-null iff !aIsNegated.
|
||
nsSelectorParsingStatus ParsePseudoSelector(int32_t& aDataMask,
|
||
nsCSSSelector& aSelector,
|
||
bool aIsNegated,
|
||
nsIAtom** aPseudoElement,
|
||
nsAtomList** aPseudoElementArgs,
|
||
nsCSSPseudoElements::Type* aPseudoElementType);
|
||
|
||
nsSelectorParsingStatus ParseAttributeSelector(int32_t& aDataMask,
|
||
nsCSSSelector& aSelector);
|
||
|
||
nsSelectorParsingStatus ParseTypeOrUniversalSelector(int32_t& aDataMask,
|
||
nsCSSSelector& aSelector,
|
||
bool aIsNegated);
|
||
|
||
nsSelectorParsingStatus ParsePseudoClassWithIdentArg(nsCSSSelector& aSelector,
|
||
nsCSSPseudoClasses::Type aType);
|
||
|
||
nsSelectorParsingStatus ParsePseudoClassWithNthPairArg(nsCSSSelector& aSelector,
|
||
nsCSSPseudoClasses::Type aType);
|
||
|
||
nsSelectorParsingStatus ParsePseudoClassWithSelectorListArg(nsCSSSelector& aSelector,
|
||
nsCSSPseudoClasses::Type aType);
|
||
|
||
nsSelectorParsingStatus ParseNegatedSimpleSelector(int32_t& aDataMask,
|
||
nsCSSSelector& aSelector);
|
||
|
||
// If aStopChar is non-zero, the selector list is done when we hit
|
||
// aStopChar. Otherwise, it's done when we hit EOF.
|
||
bool ParseSelectorList(nsCSSSelectorList*& aListHead,
|
||
char16_t aStopChar);
|
||
bool ParseSelectorGroup(nsCSSSelectorList*& aListHead);
|
||
bool ParseSelector(nsCSSSelectorList* aList, char16_t aPrevCombinator);
|
||
|
||
enum {
|
||
eParseDeclaration_InBraces = 1 << 0,
|
||
eParseDeclaration_AllowImportant = 1 << 1
|
||
};
|
||
enum nsCSSContextType {
|
||
eCSSContext_General,
|
||
eCSSContext_Page
|
||
};
|
||
|
||
css::Declaration* ParseDeclarationBlock(uint32_t aFlags,
|
||
nsCSSContextType aContext = eCSSContext_General);
|
||
bool ParseDeclaration(css::Declaration* aDeclaration,
|
||
uint32_t aFlags,
|
||
bool aMustCallValueAppended,
|
||
bool* aChanged,
|
||
nsCSSContextType aContext = eCSSContext_General);
|
||
|
||
bool ParseProperty(nsCSSProperty aPropID);
|
||
bool ParsePropertyByFunction(nsCSSProperty aPropID);
|
||
bool ParseSingleValueProperty(nsCSSValue& aValue,
|
||
nsCSSProperty aPropID);
|
||
|
||
enum PriorityParsingStatus {
|
||
ePriority_None,
|
||
ePriority_Important,
|
||
ePriority_Error
|
||
};
|
||
PriorityParsingStatus ParsePriority();
|
||
|
||
#ifdef MOZ_XUL
|
||
bool ParseTreePseudoElement(nsAtomList **aPseudoElementArgs);
|
||
#endif
|
||
|
||
void InitBoxPropsAsPhysical(const nsCSSProperty *aSourceProperties);
|
||
|
||
// Property specific parsing routines
|
||
bool ParseBackground();
|
||
|
||
struct BackgroundParseState {
|
||
nsCSSValue& mColor;
|
||
nsCSSValueList* mImage;
|
||
nsCSSValuePairList* mRepeat;
|
||
nsCSSValueList* mAttachment;
|
||
nsCSSValueList* mClip;
|
||
nsCSSValueList* mOrigin;
|
||
nsCSSValueList* mPosition;
|
||
nsCSSValuePairList* mSize;
|
||
BackgroundParseState(
|
||
nsCSSValue& aColor, nsCSSValueList* aImage, nsCSSValuePairList* aRepeat,
|
||
nsCSSValueList* aAttachment, nsCSSValueList* aClip,
|
||
nsCSSValueList* aOrigin, nsCSSValueList* aPosition,
|
||
nsCSSValuePairList* aSize) :
|
||
mColor(aColor), mImage(aImage), mRepeat(aRepeat),
|
||
mAttachment(aAttachment), mClip(aClip), mOrigin(aOrigin),
|
||
mPosition(aPosition), mSize(aSize) {};
|
||
};
|
||
|
||
bool ParseBackgroundItem(BackgroundParseState& aState);
|
||
|
||
bool ParseValueList(nsCSSProperty aPropID); // a single value prop-id
|
||
bool ParseBackgroundRepeat();
|
||
bool ParseBackgroundRepeatValues(nsCSSValuePair& aValue);
|
||
bool ParseBackgroundPosition();
|
||
|
||
// ParseBoxPositionValues parses the CSS 2.1 background-position syntax,
|
||
// which is still used by some properties. See ParseBackgroundPositionValues
|
||
// for the css3-background syntax.
|
||
bool ParseBoxPositionValues(nsCSSValuePair& aOut, bool aAcceptsInherit,
|
||
bool aAllowExplicitCenter = true); // deprecated
|
||
bool ParseBackgroundPositionValues(nsCSSValue& aOut, bool aAcceptsInherit);
|
||
|
||
bool ParseBackgroundSize();
|
||
bool ParseBackgroundSizeValues(nsCSSValuePair& aOut);
|
||
bool ParseBorderColor();
|
||
bool ParseBorderColors(nsCSSProperty aProperty);
|
||
void SetBorderImageInitialValues();
|
||
bool ParseBorderImageRepeat(bool aAcceptsInherit);
|
||
// If ParseBorderImageSlice returns false, aConsumedTokens indicates
|
||
// whether or not any tokens were consumed (in other words, was the property
|
||
// in error or just not present). If ParseBorderImageSlice returns true
|
||
// aConsumedTokens is always true.
|
||
bool ParseBorderImageSlice(bool aAcceptsInherit, bool* aConsumedTokens);
|
||
bool ParseBorderImageWidth(bool aAcceptsInherit);
|
||
bool ParseBorderImageOutset(bool aAcceptsInherit);
|
||
bool ParseBorderImage();
|
||
bool ParseBorderSpacing();
|
||
bool ParseBorderSide(const nsCSSProperty aPropIDs[],
|
||
bool aSetAllSides);
|
||
bool ParseDirectionalBorderSide(const nsCSSProperty aPropIDs[],
|
||
int32_t aSourceType);
|
||
bool ParseBorderStyle();
|
||
bool ParseBorderWidth();
|
||
|
||
bool ParseCalc(nsCSSValue &aValue, int32_t aVariantMask);
|
||
bool ParseCalcAdditiveExpression(nsCSSValue& aValue,
|
||
int32_t& aVariantMask);
|
||
bool ParseCalcMultiplicativeExpression(nsCSSValue& aValue,
|
||
int32_t& aVariantMask,
|
||
bool *aHadFinalWS);
|
||
bool ParseCalcTerm(nsCSSValue& aValue, int32_t& aVariantMask);
|
||
bool RequireWhitespace();
|
||
|
||
// For "flex" shorthand property, defined in CSS Flexbox spec
|
||
bool ParseFlex();
|
||
// For "flex-flow" shorthand property, defined in CSS Flexbox spec
|
||
bool ParseFlexFlow();
|
||
|
||
// for 'clip' and '-moz-image-region'
|
||
bool ParseRect(nsCSSProperty aPropID);
|
||
bool ParseColumns();
|
||
bool ParseContent();
|
||
bool ParseCounterData(nsCSSProperty aPropID);
|
||
bool ParseCursor();
|
||
bool ParseFont();
|
||
bool ParseFontSynthesis(nsCSSValue& aValue);
|
||
bool ParseSingleAlternate(int32_t& aWhichFeature, nsCSSValue& aValue);
|
||
bool ParseFontVariantAlternates(nsCSSValue& aValue);
|
||
bool ParseBitmaskValues(nsCSSValue& aValue, const int32_t aKeywordTable[],
|
||
const int32_t aMasks[]);
|
||
bool ParseFontVariantEastAsian(nsCSSValue& aValue);
|
||
bool ParseFontVariantLigatures(nsCSSValue& aValue);
|
||
bool ParseFontVariantNumeric(nsCSSValue& aValue);
|
||
bool ParseFontWeight(nsCSSValue& aValue);
|
||
bool ParseOneFamily(nsAString& aFamily, bool& aOneKeyword);
|
||
bool ParseFamily(nsCSSValue& aValue);
|
||
bool ParseFontFeatureSettings(nsCSSValue& aValue);
|
||
bool ParseFontSrc(nsCSSValue& aValue);
|
||
bool ParseFontSrcFormat(InfallibleTArray<nsCSSValue>& values);
|
||
bool ParseFontRanges(nsCSSValue& aValue);
|
||
bool ParseListStyle();
|
||
bool ParseMargin();
|
||
bool ParseMarks(nsCSSValue& aValue);
|
||
bool ParseTransform(bool aIsPrefixed);
|
||
bool ParseOutline();
|
||
bool ParseOverflow();
|
||
bool ParsePadding();
|
||
bool ParseQuotes();
|
||
bool ParseSize();
|
||
bool ParseTextAlign(nsCSSValue& aValue, const int32_t aTable[]);
|
||
bool ParseTextAlign(nsCSSValue& aValue);
|
||
bool ParseTextAlignLast(nsCSSValue& aValue);
|
||
bool ParseTextDecoration();
|
||
bool ParseTextDecorationLine(nsCSSValue& aValue);
|
||
bool ParseTextCombineHorizontal(nsCSSValue& aValue);
|
||
bool ParseTextOverflow(nsCSSValue& aValue);
|
||
|
||
bool ParseShadowItem(nsCSSValue& aValue, bool aIsBoxShadow);
|
||
bool ParseShadowList(nsCSSProperty aProperty);
|
||
bool ParseTransitionProperty();
|
||
bool ParseTransitionTimingFunctionValues(nsCSSValue& aValue);
|
||
bool ParseTransitionTimingFunctionValueComponent(float& aComponent,
|
||
char aStop,
|
||
bool aCheckRange);
|
||
bool ParseTransitionStepTimingFunctionValues(nsCSSValue& aValue);
|
||
enum ParseAnimationOrTransitionShorthandResult {
|
||
eParseAnimationOrTransitionShorthand_Values,
|
||
eParseAnimationOrTransitionShorthand_Inherit,
|
||
eParseAnimationOrTransitionShorthand_Error
|
||
};
|
||
ParseAnimationOrTransitionShorthandResult
|
||
ParseAnimationOrTransitionShorthand(const nsCSSProperty* aProperties,
|
||
const nsCSSValue* aInitialValues,
|
||
nsCSSValue* aValues,
|
||
size_t aNumProperties);
|
||
bool ParseTransition();
|
||
bool ParseAnimation();
|
||
|
||
bool ParsePaint(nsCSSProperty aPropID);
|
||
bool ParseDasharray();
|
||
bool ParseMarker();
|
||
bool ParsePaintOrder();
|
||
bool ParseAll();
|
||
|
||
/**
|
||
* Parses a variable value from a custom property declaration.
|
||
*
|
||
* @param aType Out parameter into which will be stored the type of variable
|
||
* value, indicating whether the parsed value was a token stream or one of
|
||
* the CSS-wide keywords.
|
||
* @param aValue Out parameter into which will be stored the token stream
|
||
* as a string, if the parsed custom property did take a token stream.
|
||
* @return Whether parsing succeeded.
|
||
*/
|
||
bool ParseVariableDeclaration(CSSVariableDeclarations::Type* aType,
|
||
nsString& aValue);
|
||
|
||
/**
|
||
* Parses a CSS variable value. This could be 'initial', 'inherit', 'unset'
|
||
* or a token stream, which may or may not include variable references.
|
||
*
|
||
* @param aType Out parameter into which the type of the variable value
|
||
* will be stored.
|
||
* @param aDropBackslash Out parameter indicating whether during variable
|
||
* value parsing there was a trailing backslash before EOF that must
|
||
* be dropped when serializing the variable value.
|
||
* @param aImpliedCharacters Out parameter appended to which will be any
|
||
* characters that were implied when encountering EOF and which
|
||
* must be included at the end of the serialized variable value.
|
||
* @param aFunc A callback function to invoke when a variable reference
|
||
* is encountered. May be null. Arguments are the variable name
|
||
* and the aData argument passed in to this function.
|
||
* @param User data to pass in to the callback.
|
||
* @return Whether parsing succeeded.
|
||
*/
|
||
bool ParseValueWithVariables(CSSVariableDeclarations::Type* aType,
|
||
bool* aDropBackslash,
|
||
nsString& aImpliedCharacters,
|
||
void (*aFunc)(const nsAString&, void*),
|
||
void* aData);
|
||
|
||
/**
|
||
* Returns whether the scanner dropped a backslash just before EOF.
|
||
*/
|
||
bool BackslashDropped();
|
||
|
||
/**
|
||
* Calls AppendImpliedEOFCharacters on mScanner.
|
||
*/
|
||
void AppendImpliedEOFCharacters(nsAString& aResult);
|
||
|
||
// Reused utility parsing routines
|
||
void AppendValue(nsCSSProperty aPropID, const nsCSSValue& aValue);
|
||
bool ParseBoxProperties(const nsCSSProperty aPropIDs[]);
|
||
bool ParseGroupedBoxProperty(int32_t aVariantMask,
|
||
nsCSSValue& aValue);
|
||
bool ParseDirectionalBoxProperty(nsCSSProperty aProperty,
|
||
int32_t aSourceType);
|
||
bool ParseBoxCornerRadius(const nsCSSProperty aPropID);
|
||
bool ParseBoxCornerRadii(const nsCSSProperty aPropIDs[]);
|
||
int32_t ParseChoice(nsCSSValue aValues[],
|
||
const nsCSSProperty aPropIDs[], int32_t aNumIDs);
|
||
bool ParseColor(nsCSSValue& aValue);
|
||
bool ParseNumberColorComponent(uint8_t& aComponent, char aStop);
|
||
bool ParsePercentageColorComponent(float& aComponent, char aStop);
|
||
// ParseHSLColor parses everything starting with the opening '('
|
||
// up through and including the aStop char.
|
||
bool ParseHSLColor(float& aHue, float& aSaturation, float& aLightness,
|
||
char aStop);
|
||
// ParseColorOpacity will enforce that the color ends with a ')'
|
||
// after the opacity
|
||
bool ParseColorOpacity(uint8_t& aOpacity);
|
||
bool ParseColorOpacity(float& aOpacity);
|
||
bool ParseEnum(nsCSSValue& aValue, const int32_t aKeywordTable[]);
|
||
bool ParseVariant(nsCSSValue& aValue,
|
||
int32_t aVariantMask,
|
||
const int32_t aKeywordTable[]);
|
||
bool ParseNonNegativeVariant(nsCSSValue& aValue,
|
||
int32_t aVariantMask,
|
||
const int32_t aKeywordTable[]);
|
||
bool ParseOneOrLargerVariant(nsCSSValue& aValue,
|
||
int32_t aVariantMask,
|
||
const int32_t aKeywordTable[]);
|
||
bool ParseCounter(nsCSSValue& aValue);
|
||
bool ParseAttr(nsCSSValue& aValue);
|
||
bool SetValueToURL(nsCSSValue& aValue, const nsString& aURL);
|
||
bool TranslateDimension(nsCSSValue& aValue, int32_t aVariantMask,
|
||
float aNumber, const nsString& aUnit);
|
||
bool ParseImageOrientation(nsCSSValue& aAngle);
|
||
bool ParseImageRect(nsCSSValue& aImage);
|
||
bool ParseElement(nsCSSValue& aValue);
|
||
bool ParseColorStop(nsCSSValueGradient* aGradient);
|
||
bool ParseLinearGradient(nsCSSValue& aValue, bool aIsRepeating,
|
||
bool aIsLegacy);
|
||
bool ParseRadialGradient(nsCSSValue& aValue, bool aIsRepeating,
|
||
bool aIsLegacy);
|
||
bool IsLegacyGradientLine(const nsCSSTokenType& aType,
|
||
const nsString& aId);
|
||
bool ParseGradientColorStops(nsCSSValueGradient* aGradient,
|
||
nsCSSValue& aValue);
|
||
|
||
void SetParsingCompoundProperty(bool aBool) {
|
||
mParsingCompoundProperty = aBool;
|
||
}
|
||
bool IsParsingCompoundProperty(void) const {
|
||
return mParsingCompoundProperty;
|
||
}
|
||
|
||
/* Functions for transform Parsing */
|
||
bool ParseSingleTransform(bool aIsPrefixed, nsCSSValue& aValue);
|
||
bool ParseFunction(nsCSSKeyword aFunction, const int32_t aAllowedTypes[],
|
||
int32_t aVariantMaskAll, uint16_t aMinElems,
|
||
uint16_t aMaxElems, nsCSSValue &aValue);
|
||
bool ParseFunctionInternals(const int32_t aVariantMask[],
|
||
int32_t aVariantMaskAll,
|
||
uint16_t aMinElems,
|
||
uint16_t aMaxElems,
|
||
InfallibleTArray<nsCSSValue>& aOutput);
|
||
|
||
/* Functions for transform-origin/perspective-origin Parsing */
|
||
bool ParseTransformOrigin(bool aPerspective);
|
||
|
||
/* Functions for filter parsing */
|
||
bool ParseFilter();
|
||
bool ParseSingleFilter(nsCSSValue* aValue);
|
||
bool ParseDropShadow(nsCSSValue* aValue);
|
||
|
||
/* Find and return the namespace ID associated with aPrefix.
|
||
If aPrefix has not been declared in an @namespace rule, returns
|
||
kNameSpaceID_Unknown. */
|
||
int32_t GetNamespaceIdForPrefix(const nsString& aPrefix);
|
||
|
||
/* Find the correct default namespace, and set it on aSelector. */
|
||
void SetDefaultNamespaceOnSelector(nsCSSSelector& aSelector);
|
||
|
||
// Current token. The value is valid after calling GetToken and invalidated
|
||
// by UngetToken.
|
||
nsCSSToken mToken;
|
||
|
||
// Our scanner.
|
||
nsCSSScanner* mScanner;
|
||
|
||
// Our error reporter.
|
||
css::ErrorReporter* mReporter;
|
||
|
||
// The URI to be used as a base for relative URIs.
|
||
nsCOMPtr<nsIURI> mBaseURI;
|
||
|
||
// The URI to be used as an HTTP "Referer" and for error reporting.
|
||
nsCOMPtr<nsIURI> mSheetURI;
|
||
|
||
// The principal of the sheet involved
|
||
nsCOMPtr<nsIPrincipal> mSheetPrincipal;
|
||
|
||
// The sheet we're parsing into
|
||
nsRefPtr<nsCSSStyleSheet> mSheet;
|
||
|
||
// Used for @import rules
|
||
mozilla::css::Loader* mChildLoader; // not ref counted, it owns us
|
||
|
||
// Sheet section we're in. This is used to enforce correct ordering of the
|
||
// various rule types (eg the fact that a @charset rule must come before
|
||
// anything else). Note that there are checks of similar things in various
|
||
// places in nsCSSStyleSheet.cpp (e.g in insertRule, RebuildChildList).
|
||
enum nsCSSSection {
|
||
eCSSSection_Charset,
|
||
eCSSSection_Import,
|
||
eCSSSection_NameSpace,
|
||
eCSSSection_General
|
||
};
|
||
nsCSSSection mSection;
|
||
|
||
nsXMLNameSpaceMap *mNameSpaceMap; // weak, mSheet owns it
|
||
|
||
// After an UngetToken is done this flag is true. The next call to
|
||
// GetToken clears the flag.
|
||
bool mHavePushBack : 1;
|
||
|
||
// True if we are in quirks mode; false in standards or almost standards mode
|
||
bool mNavQuirkMode : 1;
|
||
|
||
// True when the hashless color quirk applies.
|
||
bool mHashlessColorQuirk : 1;
|
||
|
||
// True when the unitless length quirk applies.
|
||
bool mUnitlessLengthQuirk : 1;
|
||
|
||
// True if unsafe rules should be allowed
|
||
bool mUnsafeRulesEnabled : 1;
|
||
|
||
// True if viewport units should be allowed.
|
||
bool mViewportUnitsEnabled : 1;
|
||
|
||
// True for parsing media lists for HTML attributes, where we have to
|
||
// ignore CSS comments.
|
||
bool mHTMLMediaMode : 1;
|
||
|
||
// This flag is set when parsing a non-box shorthand; it's used to not apply
|
||
// some quirks during shorthand parsing
|
||
bool mParsingCompoundProperty : 1;
|
||
|
||
// True if we are in the middle of parsing an @supports condition.
|
||
// This is used to avoid recording the input stream when variable references
|
||
// are encountered in a property declaration in the @supports condition.
|
||
bool mInSupportsCondition : 1;
|
||
|
||
// True if we are somewhere within a @supports rule whose condition is
|
||
// false.
|
||
bool mInFailingSupportsRule : 1;
|
||
|
||
// True if we will suppress all parse errors (except unexpected EOFs).
|
||
// This is used to prevent errors for declarations inside a failing
|
||
// @supports rule.
|
||
bool mSuppressErrors : 1;
|
||
|
||
// Stack of rule groups; used for @media and such.
|
||
InfallibleTArray<nsRefPtr<css::GroupRule> > mGroupStack;
|
||
|
||
// During the parsing of a property (which may be a shorthand), the data
|
||
// are stored in |mTempData|. (It is needed to ensure that parser
|
||
// errors cause the data to be ignored, and to ensure that a
|
||
// non-'!important' declaration does not override an '!important'
|
||
// one.)
|
||
nsCSSExpandedDataBlock mTempData;
|
||
|
||
// All data from successfully parsed properties are placed into |mData|.
|
||
nsCSSExpandedDataBlock mData;
|
||
|
||
public:
|
||
// Used from nsCSSParser constructors and destructors
|
||
CSSParserImpl* mNextFree;
|
||
};
|
||
|
||
static void AssignRuleToPointer(css::Rule* aRule, void* aPointer)
|
||
{
|
||
css::Rule **pointer = static_cast<css::Rule**>(aPointer);
|
||
NS_ADDREF(*pointer = aRule);
|
||
}
|
||
|
||
static void AppendRuleToSheet(css::Rule* aRule, void* aParser)
|
||
{
|
||
CSSParserImpl* parser = (CSSParserImpl*) aParser;
|
||
parser->AppendRule(aRule);
|
||
}
|
||
|
||
#define REPORT_UNEXPECTED(msg_) \
|
||
{ if (!mSuppressErrors) mReporter->ReportUnexpected(#msg_); }
|
||
|
||
#define REPORT_UNEXPECTED_P(msg_, param_) \
|
||
{ if (!mSuppressErrors) mReporter->ReportUnexpected(#msg_, param_); }
|
||
|
||
#define REPORT_UNEXPECTED_TOKEN(msg_) \
|
||
{ if (!mSuppressErrors) mReporter->ReportUnexpected(#msg_, mToken); }
|
||
|
||
#define REPORT_UNEXPECTED_TOKEN_CHAR(msg_, ch_) \
|
||
{ if (!mSuppressErrors) mReporter->ReportUnexpected(#msg_, mToken, ch_); }
|
||
|
||
#define REPORT_UNEXPECTED_EOF(lf_) \
|
||
mReporter->ReportUnexpectedEOF(#lf_)
|
||
|
||
#define REPORT_UNEXPECTED_EOF_CHAR(ch_) \
|
||
mReporter->ReportUnexpectedEOF(ch_)
|
||
|
||
#define OUTPUT_ERROR() \
|
||
mReporter->OutputError()
|
||
|
||
#define OUTPUT_ERROR_WITH_POSITION(linenum_, lineoff_) \
|
||
mReporter->OutputError(linenum_, lineoff_)
|
||
|
||
#define CLEAR_ERROR() \
|
||
mReporter->ClearError()
|
||
|
||
CSSParserImpl::CSSParserImpl()
|
||
: mToken(),
|
||
mScanner(nullptr),
|
||
mReporter(nullptr),
|
||
mChildLoader(nullptr),
|
||
mSection(eCSSSection_Charset),
|
||
mNameSpaceMap(nullptr),
|
||
mHavePushBack(false),
|
||
mNavQuirkMode(false),
|
||
mHashlessColorQuirk(false),
|
||
mUnitlessLengthQuirk(false),
|
||
mUnsafeRulesEnabled(false),
|
||
mViewportUnitsEnabled(true),
|
||
mHTMLMediaMode(false),
|
||
mParsingCompoundProperty(false),
|
||
mInSupportsCondition(false),
|
||
mInFailingSupportsRule(false),
|
||
mSuppressErrors(false),
|
||
mNextFree(nullptr)
|
||
{
|
||
}
|
||
|
||
CSSParserImpl::~CSSParserImpl()
|
||
{
|
||
mData.AssertInitialState();
|
||
mTempData.AssertInitialState();
|
||
}
|
||
|
||
nsresult
|
||
CSSParserImpl::SetStyleSheet(nsCSSStyleSheet* aSheet)
|
||
{
|
||
if (aSheet != mSheet) {
|
||
// Switch to using the new sheet, if any
|
||
mGroupStack.Clear();
|
||
mSheet = aSheet;
|
||
if (mSheet) {
|
||
mNameSpaceMap = mSheet->GetNameSpaceMap();
|
||
} else {
|
||
mNameSpaceMap = nullptr;
|
||
}
|
||
} else if (mSheet) {
|
||
mNameSpaceMap = mSheet->GetNameSpaceMap();
|
||
}
|
||
|
||
return NS_OK;
|
||
}
|
||
|
||
nsresult
|
||
CSSParserImpl::SetQuirkMode(bool aQuirkMode)
|
||
{
|
||
mNavQuirkMode = aQuirkMode;
|
||
return NS_OK;
|
||
}
|
||
|
||
nsresult
|
||
CSSParserImpl::SetChildLoader(mozilla::css::Loader* aChildLoader)
|
||
{
|
||
mChildLoader = aChildLoader; // not ref counted, it owns us
|
||
return NS_OK;
|
||
}
|
||
|
||
void
|
||
CSSParserImpl::Reset()
|
||
{
|
||
NS_ASSERTION(!mScanner, "resetting with scanner active");
|
||
SetStyleSheet(nullptr);
|
||
SetQuirkMode(false);
|
||
SetChildLoader(nullptr);
|
||
}
|
||
|
||
void
|
||
CSSParserImpl::InitScanner(nsCSSScanner& aScanner,
|
||
css::ErrorReporter& aReporter,
|
||
nsIURI* aSheetURI, nsIURI* aBaseURI,
|
||
nsIPrincipal* aSheetPrincipal)
|
||
{
|
||
NS_PRECONDITION(!mHTMLMediaMode, "Bad initial state");
|
||
NS_PRECONDITION(!mParsingCompoundProperty, "Bad initial state");
|
||
NS_PRECONDITION(!mScanner, "already have scanner");
|
||
|
||
mScanner = &aScanner;
|
||
mReporter = &aReporter;
|
||
mScanner->SetErrorReporter(mReporter);
|
||
|
||
mBaseURI = aBaseURI;
|
||
mSheetURI = aSheetURI;
|
||
mSheetPrincipal = aSheetPrincipal;
|
||
mHavePushBack = false;
|
||
}
|
||
|
||
void
|
||
CSSParserImpl::ReleaseScanner()
|
||
{
|
||
mScanner = nullptr;
|
||
mReporter = nullptr;
|
||
mBaseURI = nullptr;
|
||
mSheetURI = nullptr;
|
||
mSheetPrincipal = nullptr;
|
||
}
|
||
|
||
nsresult
|
||
CSSParserImpl::ParseSheet(const nsAString& aInput,
|
||
nsIURI* aSheetURI,
|
||
nsIURI* aBaseURI,
|
||
nsIPrincipal* aSheetPrincipal,
|
||
uint32_t aLineNumber,
|
||
bool aAllowUnsafeRules)
|
||
{
|
||
NS_PRECONDITION(aSheetPrincipal, "Must have principal here!");
|
||
NS_PRECONDITION(aBaseURI, "need base URI");
|
||
NS_PRECONDITION(aSheetURI, "need sheet URI");
|
||
NS_PRECONDITION(mSheet, "Must have sheet to parse into");
|
||
NS_ENSURE_STATE(mSheet);
|
||
|
||
#ifdef DEBUG
|
||
nsIURI* uri = mSheet->GetSheetURI();
|
||
bool equal;
|
||
NS_ASSERTION(NS_SUCCEEDED(aSheetURI->Equals(uri, &equal)) && equal,
|
||
"Sheet URI does not match passed URI");
|
||
NS_ASSERTION(NS_SUCCEEDED(mSheet->Principal()->Equals(aSheetPrincipal,
|
||
&equal)) &&
|
||
equal,
|
||
"Sheet principal does not match passed principal");
|
||
#endif
|
||
|
||
nsCSSScanner scanner(aInput, aLineNumber);
|
||
css::ErrorReporter reporter(scanner, mSheet, mChildLoader, aSheetURI);
|
||
InitScanner(scanner, reporter, aSheetURI, aBaseURI, aSheetPrincipal);
|
||
|
||
int32_t ruleCount = mSheet->StyleRuleCount();
|
||
if (0 < ruleCount) {
|
||
const css::Rule* lastRule = mSheet->GetStyleRuleAt(ruleCount - 1);
|
||
if (lastRule) {
|
||
switch (lastRule->GetType()) {
|
||
case css::Rule::CHARSET_RULE:
|
||
case css::Rule::IMPORT_RULE:
|
||
mSection = eCSSSection_Import;
|
||
break;
|
||
case css::Rule::NAMESPACE_RULE:
|
||
mSection = eCSSSection_NameSpace;
|
||
break;
|
||
default:
|
||
mSection = eCSSSection_General;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
else {
|
||
mSection = eCSSSection_Charset; // sheet is empty, any rules are fair
|
||
}
|
||
|
||
mUnsafeRulesEnabled = aAllowUnsafeRules;
|
||
|
||
nsCSSToken* tk = &mToken;
|
||
for (;;) {
|
||
// Get next non-whitespace token
|
||
if (!GetToken(true)) {
|
||
OUTPUT_ERROR();
|
||
break;
|
||
}
|
||
if (eCSSToken_HTMLComment == tk->mType) {
|
||
continue; // legal here only
|
||
}
|
||
if (eCSSToken_AtKeyword == tk->mType) {
|
||
ParseAtRule(AppendRuleToSheet, this, false);
|
||
continue;
|
||
}
|
||
UngetToken();
|
||
if (ParseRuleSet(AppendRuleToSheet, this)) {
|
||
mSection = eCSSSection_General;
|
||
}
|
||
}
|
||
ReleaseScanner();
|
||
|
||
mUnsafeRulesEnabled = false;
|
||
|
||
// XXX check for low level errors
|
||
return NS_OK;
|
||
}
|
||
|
||
/**
|
||
* Determines whether the identifier contained in the given string is a
|
||
* vendor-specific identifier, as described in CSS 2.1 section 4.1.2.1.
|
||
*/
|
||
static bool
|
||
NonMozillaVendorIdentifier(const nsAString& ident)
|
||
{
|
||
return (ident.First() == char16_t('-') &&
|
||
!StringBeginsWith(ident, NS_LITERAL_STRING("-moz-"))) ||
|
||
ident.First() == char16_t('_');
|
||
|
||
}
|
||
|
||
nsresult
|
||
CSSParserImpl::ParseStyleAttribute(const nsAString& aAttributeValue,
|
||
nsIURI* aDocURI,
|
||
nsIURI* aBaseURI,
|
||
nsIPrincipal* aNodePrincipal,
|
||
css::StyleRule** aResult)
|
||
{
|
||
NS_PRECONDITION(aNodePrincipal, "Must have principal here!");
|
||
NS_PRECONDITION(aBaseURI, "need base URI");
|
||
|
||
// XXX line number?
|
||
nsCSSScanner scanner(aAttributeValue, 0);
|
||
css::ErrorReporter reporter(scanner, mSheet, mChildLoader, aDocURI);
|
||
InitScanner(scanner, reporter, aDocURI, aBaseURI, aNodePrincipal);
|
||
|
||
mSection = eCSSSection_General;
|
||
|
||
uint32_t parseFlags = eParseDeclaration_AllowImportant;
|
||
|
||
css::Declaration* declaration = ParseDeclarationBlock(parseFlags);
|
||
if (declaration) {
|
||
// Create a style rule for the declaration
|
||
NS_ADDREF(*aResult = new css::StyleRule(nullptr, declaration));
|
||
} else {
|
||
*aResult = nullptr;
|
||
}
|
||
|
||
ReleaseScanner();
|
||
|
||
// XXX check for low level errors
|
||
return NS_OK;
|
||
}
|
||
|
||
nsresult
|
||
CSSParserImpl::ParseDeclarations(const nsAString& aBuffer,
|
||
nsIURI* aSheetURI,
|
||
nsIURI* aBaseURI,
|
||
nsIPrincipal* aSheetPrincipal,
|
||
css::Declaration* aDeclaration,
|
||
bool* aChanged)
|
||
{
|
||
*aChanged = false;
|
||
|
||
NS_PRECONDITION(aSheetPrincipal, "Must have principal here!");
|
||
|
||
nsCSSScanner scanner(aBuffer, 0);
|
||
css::ErrorReporter reporter(scanner, mSheet, mChildLoader, aSheetURI);
|
||
InitScanner(scanner, reporter, aSheetURI, aBaseURI, aSheetPrincipal);
|
||
|
||
mSection = eCSSSection_General;
|
||
|
||
mData.AssertInitialState();
|
||
aDeclaration->ClearData();
|
||
// We could check if it was already empty, but...
|
||
*aChanged = true;
|
||
|
||
for (;;) {
|
||
// If we cleared the old decl, then we want to be calling
|
||
// ValueAppended as we parse.
|
||
if (!ParseDeclaration(aDeclaration, eParseDeclaration_AllowImportant,
|
||
true, aChanged)) {
|
||
if (!SkipDeclaration(false)) {
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
aDeclaration->CompressFrom(&mData);
|
||
ReleaseScanner();
|
||
return NS_OK;
|
||
}
|
||
|
||
nsresult
|
||
CSSParserImpl::ParseRule(const nsAString& aRule,
|
||
nsIURI* aSheetURI,
|
||
nsIURI* aBaseURI,
|
||
nsIPrincipal* aSheetPrincipal,
|
||
css::Rule** aResult)
|
||
{
|
||
NS_PRECONDITION(aSheetPrincipal, "Must have principal here!");
|
||
NS_PRECONDITION(aBaseURI, "need base URI");
|
||
|
||
*aResult = nullptr;
|
||
|
||
nsCSSScanner scanner(aRule, 0);
|
||
css::ErrorReporter reporter(scanner, mSheet, mChildLoader, aSheetURI);
|
||
InitScanner(scanner, reporter, aSheetURI, aBaseURI, aSheetPrincipal);
|
||
|
||
mSection = eCSSSection_Charset; // callers are responsible for rejecting invalid rules.
|
||
|
||
nsCSSToken* tk = &mToken;
|
||
// Get first non-whitespace token
|
||
nsresult rv = NS_OK;
|
||
if (!GetToken(true)) {
|
||
REPORT_UNEXPECTED(PEParseRuleWSOnly);
|
||
OUTPUT_ERROR();
|
||
rv = NS_ERROR_DOM_SYNTAX_ERR;
|
||
} else {
|
||
if (eCSSToken_AtKeyword == tk->mType) {
|
||
// FIXME: perhaps aInsideBlock should be true when we are?
|
||
ParseAtRule(AssignRuleToPointer, aResult, false);
|
||
} else {
|
||
UngetToken();
|
||
ParseRuleSet(AssignRuleToPointer, aResult);
|
||
}
|
||
|
||
if (*aResult && GetToken(true)) {
|
||
// garbage after rule
|
||
REPORT_UNEXPECTED_TOKEN(PERuleTrailing);
|
||
NS_RELEASE(*aResult);
|
||
}
|
||
|
||
if (!*aResult) {
|
||
rv = NS_ERROR_DOM_SYNTAX_ERR;
|
||
OUTPUT_ERROR();
|
||
}
|
||
}
|
||
|
||
ReleaseScanner();
|
||
return rv;
|
||
}
|
||
|
||
// See Bug 723197
|
||
#ifdef _MSC_VER
|
||
#pragma optimize( "", off )
|
||
#pragma warning( push )
|
||
#pragma warning( disable : 4748 )
|
||
#endif
|
||
|
||
nsresult
|
||
CSSParserImpl::ParseProperty(const nsCSSProperty aPropID,
|
||
const nsAString& aPropValue,
|
||
nsIURI* aSheetURI,
|
||
nsIURI* aBaseURI,
|
||
nsIPrincipal* aSheetPrincipal,
|
||
css::Declaration* aDeclaration,
|
||
bool* aChanged,
|
||
bool aIsImportant,
|
||
bool aIsSVGMode)
|
||
{
|
||
NS_PRECONDITION(aSheetPrincipal, "Must have principal here!");
|
||
NS_PRECONDITION(aBaseURI, "need base URI");
|
||
NS_PRECONDITION(aDeclaration, "Need declaration to parse into!");
|
||
|
||
mData.AssertInitialState();
|
||
mTempData.AssertInitialState();
|
||
aDeclaration->AssertMutable();
|
||
|
||
nsCSSScanner scanner(aPropValue, 0);
|
||
css::ErrorReporter reporter(scanner, mSheet, mChildLoader, aSheetURI);
|
||
InitScanner(scanner, reporter, aSheetURI, aBaseURI, aSheetPrincipal);
|
||
mSection = eCSSSection_General;
|
||
scanner.SetSVGMode(aIsSVGMode);
|
||
|
||
*aChanged = false;
|
||
|
||
// Check for unknown or preffed off properties
|
||
if (eCSSProperty_UNKNOWN == aPropID || !nsCSSProps::IsEnabled(aPropID)) {
|
||
NS_ConvertASCIItoUTF16 propName(nsCSSProps::GetStringValue(aPropID));
|
||
REPORT_UNEXPECTED_P(PEUnknownProperty, propName);
|
||
REPORT_UNEXPECTED(PEDeclDropped);
|
||
OUTPUT_ERROR();
|
||
ReleaseScanner();
|
||
return NS_OK;
|
||
}
|
||
|
||
bool parsedOK = ParseProperty(aPropID);
|
||
// We should now be at EOF
|
||
if (parsedOK && GetToken(true)) {
|
||
REPORT_UNEXPECTED_TOKEN(PEExpectEndValue);
|
||
parsedOK = false;
|
||
}
|
||
|
||
if (!parsedOK) {
|
||
NS_ConvertASCIItoUTF16 propName(nsCSSProps::GetStringValue(aPropID));
|
||
REPORT_UNEXPECTED_P(PEValueParsingError, propName);
|
||
REPORT_UNEXPECTED(PEDeclDropped);
|
||
OUTPUT_ERROR();
|
||
mTempData.ClearProperty(aPropID);
|
||
} else {
|
||
|
||
// We know we don't need to force a ValueAppended call for the new
|
||
// value. So if we are not processing a shorthand, and there's
|
||
// already a value for this property in the declaration at the
|
||
// same importance level, then we can just copy our parsed value
|
||
// directly into the declaration without going through the whole
|
||
// expand/compress thing.
|
||
if (!aDeclaration->TryReplaceValue(aPropID, aIsImportant, mTempData,
|
||
aChanged)) {
|
||
// Do it the slow way
|
||
aDeclaration->ExpandTo(&mData);
|
||
*aChanged = mData.TransferFromBlock(mTempData, aPropID, aIsImportant,
|
||
true, false, aDeclaration);
|
||
aDeclaration->CompressFrom(&mData);
|
||
}
|
||
CLEAR_ERROR();
|
||
}
|
||
|
||
mTempData.AssertInitialState();
|
||
|
||
ReleaseScanner();
|
||
return NS_OK;
|
||
}
|
||
|
||
nsresult
|
||
CSSParserImpl::ParseVariable(const nsAString& aVariableName,
|
||
const nsAString& aPropValue,
|
||
nsIURI* aSheetURI,
|
||
nsIURI* aBaseURI,
|
||
nsIPrincipal* aSheetPrincipal,
|
||
css::Declaration* aDeclaration,
|
||
bool* aChanged,
|
||
bool aIsImportant)
|
||
{
|
||
NS_PRECONDITION(aSheetPrincipal, "Must have principal here!");
|
||
NS_PRECONDITION(aBaseURI, "need base URI");
|
||
NS_PRECONDITION(aDeclaration, "Need declaration to parse into!");
|
||
NS_PRECONDITION(nsLayoutUtils::CSSVariablesEnabled(),
|
||
"expected Variables to be enabled");
|
||
|
||
mData.AssertInitialState();
|
||
mTempData.AssertInitialState();
|
||
aDeclaration->AssertMutable();
|
||
|
||
nsCSSScanner scanner(aPropValue, 0);
|
||
css::ErrorReporter reporter(scanner, mSheet, mChildLoader, aSheetURI);
|
||
InitScanner(scanner, reporter, aSheetURI, aBaseURI, aSheetPrincipal);
|
||
mSection = eCSSSection_General;
|
||
|
||
*aChanged = false;
|
||
|
||
CSSVariableDeclarations::Type variableType;
|
||
nsString variableValue;
|
||
|
||
bool parsedOK = ParseVariableDeclaration(&variableType, variableValue);
|
||
|
||
// We should now be at EOF
|
||
if (parsedOK && GetToken(true)) {
|
||
REPORT_UNEXPECTED_TOKEN(PEExpectEndValue);
|
||
parsedOK = false;
|
||
}
|
||
|
||
if (!parsedOK) {
|
||
REPORT_UNEXPECTED_P(PEValueParsingError, NS_LITERAL_STRING("var-") +
|
||
aVariableName);
|
||
REPORT_UNEXPECTED(PEDeclDropped);
|
||
OUTPUT_ERROR();
|
||
} else {
|
||
CLEAR_ERROR();
|
||
aDeclaration->AddVariableDeclaration(aVariableName, variableType,
|
||
variableValue, aIsImportant, true);
|
||
*aChanged = true;
|
||
}
|
||
|
||
mTempData.AssertInitialState();
|
||
|
||
ReleaseScanner();
|
||
return NS_OK;
|
||
}
|
||
|
||
#ifdef _MSC_VER
|
||
#pragma warning( pop )
|
||
#pragma optimize( "", on )
|
||
#endif
|
||
|
||
void
|
||
CSSParserImpl::ParseMediaList(const nsSubstring& aBuffer,
|
||
nsIURI* aURI, // for error reporting
|
||
uint32_t aLineNumber, // for error reporting
|
||
nsMediaList* aMediaList,
|
||
bool aHTMLMode)
|
||
{
|
||
// XXX Are there cases where the caller wants to keep what it already
|
||
// has in case of parser error? If GatherMedia ever changes to return
|
||
// a value other than true, we probably should avoid modifying aMediaList.
|
||
aMediaList->Clear();
|
||
|
||
// fake base URI since media lists don't have URIs in them
|
||
nsCSSScanner scanner(aBuffer, aLineNumber);
|
||
css::ErrorReporter reporter(scanner, mSheet, mChildLoader, aURI);
|
||
InitScanner(scanner, reporter, aURI, aURI, nullptr);
|
||
|
||
mHTMLMediaMode = aHTMLMode;
|
||
|
||
// XXXldb We need to make the scanner not skip CSS comments! (Or
|
||
// should we?)
|
||
|
||
// For aHTMLMode, we used to follow the parsing rules in
|
||
// http://www.w3.org/TR/1999/REC-html401-19991224/types.html#type-media-descriptors
|
||
// which wouldn't work for media queries since they remove all but the
|
||
// first word. However, they're changed in
|
||
// http://www.whatwg.org/specs/web-apps/current-work/multipage/section-document.html#media2
|
||
// (as of 2008-05-29) which says that the media attribute just points
|
||
// to a media query. (The main substative difference is the relative
|
||
// precedence of commas and paretheses.)
|
||
|
||
DebugOnly<bool> parsedOK = GatherMedia(aMediaList, false);
|
||
NS_ASSERTION(parsedOK, "GatherMedia returned false; we probably want to avoid "
|
||
"trashing aMediaList");
|
||
|
||
CLEAR_ERROR();
|
||
ReleaseScanner();
|
||
mHTMLMediaMode = false;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseColorString(const nsSubstring& aBuffer,
|
||
nsIURI* aURI, // for error reporting
|
||
uint32_t aLineNumber, // for error reporting
|
||
nsCSSValue& aValue)
|
||
{
|
||
nsCSSScanner scanner(aBuffer, aLineNumber);
|
||
css::ErrorReporter reporter(scanner, mSheet, mChildLoader, aURI);
|
||
InitScanner(scanner, reporter, aURI, aURI, nullptr);
|
||
|
||
// Parse a color, and check that there's nothing else after it.
|
||
bool colorParsed = ParseColor(aValue) && !GetToken(true);
|
||
OUTPUT_ERROR();
|
||
ReleaseScanner();
|
||
return colorParsed;
|
||
}
|
||
|
||
nsresult
|
||
CSSParserImpl::ParseSelectorString(const nsSubstring& aSelectorString,
|
||
nsIURI* aURI, // for error reporting
|
||
uint32_t aLineNumber, // for error reporting
|
||
nsCSSSelectorList **aSelectorList)
|
||
{
|
||
nsCSSScanner scanner(aSelectorString, aLineNumber);
|
||
css::ErrorReporter reporter(scanner, mSheet, mChildLoader, aURI);
|
||
InitScanner(scanner, reporter, aURI, aURI, nullptr);
|
||
|
||
bool success = ParseSelectorList(*aSelectorList, char16_t(0));
|
||
|
||
// We deliberately do not call OUTPUT_ERROR here, because all our
|
||
// callers map a failure return to a JS exception, and if that JS
|
||
// exception is caught, people don't want to see parser diagnostics;
|
||
// see e.g. http://bugs.jquery.com/ticket/7535
|
||
// It would be nice to be able to save the parser diagnostics into
|
||
// the exception, so that if it _isn't_ caught we can report them
|
||
// along with the usual uncaught-exception message, but we don't
|
||
// have any way to do that at present; see bug 631621.
|
||
CLEAR_ERROR();
|
||
ReleaseScanner();
|
||
|
||
if (success) {
|
||
NS_ASSERTION(*aSelectorList, "Should have list!");
|
||
return NS_OK;
|
||
}
|
||
|
||
NS_ASSERTION(!*aSelectorList, "Shouldn't have list!");
|
||
|
||
return NS_ERROR_DOM_SYNTAX_ERR;
|
||
}
|
||
|
||
|
||
already_AddRefed<nsCSSKeyframeRule>
|
||
CSSParserImpl::ParseKeyframeRule(const nsSubstring& aBuffer,
|
||
nsIURI* aURI,
|
||
uint32_t aLineNumber)
|
||
{
|
||
nsCSSScanner scanner(aBuffer, aLineNumber);
|
||
css::ErrorReporter reporter(scanner, mSheet, mChildLoader, aURI);
|
||
InitScanner(scanner, reporter, aURI, aURI, nullptr);
|
||
|
||
nsRefPtr<nsCSSKeyframeRule> result = ParseKeyframeRule();
|
||
if (GetToken(true)) {
|
||
// extra garbage at the end
|
||
result = nullptr;
|
||
}
|
||
|
||
OUTPUT_ERROR();
|
||
ReleaseScanner();
|
||
|
||
return result.forget();
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseKeyframeSelectorString(const nsSubstring& aSelectorString,
|
||
nsIURI* aURI, // for error reporting
|
||
uint32_t aLineNumber, // for error reporting
|
||
InfallibleTArray<float>& aSelectorList)
|
||
{
|
||
NS_ABORT_IF_FALSE(aSelectorList.IsEmpty(), "given list should start empty");
|
||
|
||
nsCSSScanner scanner(aSelectorString, aLineNumber);
|
||
css::ErrorReporter reporter(scanner, mSheet, mChildLoader, aURI);
|
||
InitScanner(scanner, reporter, aURI, aURI, nullptr);
|
||
|
||
bool success = ParseKeyframeSelectorList(aSelectorList) &&
|
||
// must consume entire input string
|
||
!GetToken(true);
|
||
|
||
OUTPUT_ERROR();
|
||
ReleaseScanner();
|
||
|
||
if (success) {
|
||
NS_ASSERTION(!aSelectorList.IsEmpty(), "should not be empty");
|
||
} else {
|
||
aSelectorList.Clear();
|
||
}
|
||
|
||
return success;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::EvaluateSupportsDeclaration(const nsAString& aProperty,
|
||
const nsAString& aValue,
|
||
nsIURI* aDocURL,
|
||
nsIURI* aBaseURL,
|
||
nsIPrincipal* aDocPrincipal)
|
||
{
|
||
nsCSSProperty propID = nsCSSProps::LookupProperty(aProperty,
|
||
nsCSSProps::eEnabled);
|
||
if (propID == eCSSProperty_UNKNOWN) {
|
||
return false;
|
||
}
|
||
|
||
nsCSSScanner scanner(aValue, 0);
|
||
css::ErrorReporter reporter(scanner, mSheet, mChildLoader, aDocURL);
|
||
InitScanner(scanner, reporter, aDocURL, aBaseURL, aDocPrincipal);
|
||
nsAutoSuppressErrors suppressErrors(this);
|
||
|
||
bool parsedOK;
|
||
|
||
if (propID == eCSSPropertyExtra_variable) {
|
||
MOZ_ASSERT(Substring(aProperty,
|
||
0, VAR_PREFIX_LENGTH).EqualsLiteral("var-"));
|
||
const nsDependentSubstring varName =
|
||
Substring(aProperty, VAR_PREFIX_LENGTH); // remove 'var-'
|
||
CSSVariableDeclarations::Type variableType;
|
||
nsString variableValue;
|
||
parsedOK = ParseVariableDeclaration(&variableType, variableValue) &&
|
||
!GetToken(true);
|
||
} else {
|
||
parsedOK = ParseProperty(propID) && !GetToken(true);
|
||
|
||
mTempData.ClearProperty(propID);
|
||
mTempData.AssertInitialState();
|
||
}
|
||
|
||
CLEAR_ERROR();
|
||
ReleaseScanner();
|
||
|
||
return parsedOK;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::EvaluateSupportsCondition(const nsAString& aDeclaration,
|
||
nsIURI* aDocURL,
|
||
nsIURI* aBaseURL,
|
||
nsIPrincipal* aDocPrincipal)
|
||
{
|
||
nsCSSScanner scanner(aDeclaration, 0);
|
||
css::ErrorReporter reporter(scanner, mSheet, mChildLoader, aDocURL);
|
||
InitScanner(scanner, reporter, aDocURL, aBaseURL, aDocPrincipal);
|
||
nsAutoSuppressErrors suppressErrors(this);
|
||
|
||
bool conditionMet;
|
||
bool parsedOK = ParseSupportsCondition(conditionMet) && !GetToken(true);
|
||
|
||
CLEAR_ERROR();
|
||
ReleaseScanner();
|
||
|
||
return parsedOK && conditionMet;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::EnumerateVariableReferences(const nsAString& aPropertyValue,
|
||
VariableEnumFunc aFunc,
|
||
void* aData)
|
||
{
|
||
nsCSSScanner scanner(aPropertyValue, 0);
|
||
css::ErrorReporter reporter(scanner, nullptr, nullptr, nullptr);
|
||
InitScanner(scanner, reporter, nullptr, nullptr, nullptr);
|
||
nsAutoSuppressErrors suppressErrors(this);
|
||
|
||
CSSVariableDeclarations::Type type;
|
||
bool dropBackslash;
|
||
nsString impliedCharacters;
|
||
bool result = ParseValueWithVariables(&type, &dropBackslash,
|
||
impliedCharacters, aFunc, aData) &&
|
||
!GetToken(true);
|
||
|
||
ReleaseScanner();
|
||
|
||
return result;
|
||
}
|
||
|
||
static bool
|
||
SeparatorRequiredBetweenTokens(nsCSSTokenSerializationType aToken1,
|
||
nsCSSTokenSerializationType aToken2)
|
||
{
|
||
// The two lines marked with (*) do not correspond to entries in
|
||
// the table in the css-syntax spec but which we need to handle,
|
||
// as we treat them as whole tokens.
|
||
switch (aToken1) {
|
||
case eCSSTokenSerialization_Ident:
|
||
return aToken2 == eCSSTokenSerialization_Ident ||
|
||
aToken2 == eCSSTokenSerialization_Function ||
|
||
aToken2 == eCSSTokenSerialization_URL_or_BadURL ||
|
||
aToken2 == eCSSTokenSerialization_Symbol_Minus ||
|
||
aToken2 == eCSSTokenSerialization_Number ||
|
||
aToken2 == eCSSTokenSerialization_Percentage ||
|
||
aToken2 == eCSSTokenSerialization_Dimension ||
|
||
aToken2 == eCSSTokenSerialization_URange ||
|
||
aToken2 == eCSSTokenSerialization_CDC ||
|
||
aToken2 == eCSSTokenSerialization_Symbol_OpenParen;
|
||
case eCSSTokenSerialization_AtKeyword_or_Hash:
|
||
case eCSSTokenSerialization_Dimension:
|
||
return aToken2 == eCSSTokenSerialization_Ident ||
|
||
aToken2 == eCSSTokenSerialization_Function ||
|
||
aToken2 == eCSSTokenSerialization_URL_or_BadURL ||
|
||
aToken2 == eCSSTokenSerialization_Symbol_Minus ||
|
||
aToken2 == eCSSTokenSerialization_Number ||
|
||
aToken2 == eCSSTokenSerialization_Percentage ||
|
||
aToken2 == eCSSTokenSerialization_Dimension ||
|
||
aToken2 == eCSSTokenSerialization_URange ||
|
||
aToken2 == eCSSTokenSerialization_CDC;
|
||
case eCSSTokenSerialization_Symbol_Hash:
|
||
return aToken2 == eCSSTokenSerialization_Ident ||
|
||
aToken2 == eCSSTokenSerialization_Function ||
|
||
aToken2 == eCSSTokenSerialization_URL_or_BadURL ||
|
||
aToken2 == eCSSTokenSerialization_Symbol_Minus ||
|
||
aToken2 == eCSSTokenSerialization_Number ||
|
||
aToken2 == eCSSTokenSerialization_Percentage ||
|
||
aToken2 == eCSSTokenSerialization_Dimension ||
|
||
aToken2 == eCSSTokenSerialization_URange;
|
||
case eCSSTokenSerialization_Symbol_Minus:
|
||
case eCSSTokenSerialization_Number:
|
||
return aToken2 == eCSSTokenSerialization_Ident ||
|
||
aToken2 == eCSSTokenSerialization_Function ||
|
||
aToken2 == eCSSTokenSerialization_URL_or_BadURL ||
|
||
aToken2 == eCSSTokenSerialization_Number ||
|
||
aToken2 == eCSSTokenSerialization_Percentage ||
|
||
aToken2 == eCSSTokenSerialization_Dimension ||
|
||
aToken2 == eCSSTokenSerialization_URange;
|
||
case eCSSTokenSerialization_Symbol_At:
|
||
return aToken2 == eCSSTokenSerialization_Ident ||
|
||
aToken2 == eCSSTokenSerialization_Function ||
|
||
aToken2 == eCSSTokenSerialization_URL_or_BadURL ||
|
||
aToken2 == eCSSTokenSerialization_Symbol_Minus ||
|
||
aToken2 == eCSSTokenSerialization_URange;
|
||
case eCSSTokenSerialization_URange:
|
||
return aToken2 == eCSSTokenSerialization_Ident ||
|
||
aToken2 == eCSSTokenSerialization_Function ||
|
||
aToken2 == eCSSTokenSerialization_Number ||
|
||
aToken2 == eCSSTokenSerialization_Percentage ||
|
||
aToken2 == eCSSTokenSerialization_Dimension ||
|
||
aToken2 == eCSSTokenSerialization_Symbol_Question;
|
||
case eCSSTokenSerialization_Symbol_Dot_or_Plus:
|
||
return aToken2 == eCSSTokenSerialization_Number ||
|
||
aToken2 == eCSSTokenSerialization_Percentage ||
|
||
aToken2 == eCSSTokenSerialization_Dimension;
|
||
case eCSSTokenSerialization_Symbol_Assorted:
|
||
case eCSSTokenSerialization_Symbol_Asterisk:
|
||
return aToken2 == eCSSTokenSerialization_Symbol_Equals;
|
||
case eCSSTokenSerialization_Symbol_Bar:
|
||
return aToken2 == eCSSTokenSerialization_Symbol_Equals ||
|
||
aToken2 == eCSSTokenSerialization_Symbol_Bar ||
|
||
aToken2 == eCSSTokenSerialization_DashMatch; // (*)
|
||
case eCSSTokenSerialization_Symbol_Slash:
|
||
return aToken2 == eCSSTokenSerialization_Symbol_Asterisk ||
|
||
aToken2 == eCSSTokenSerialization_ContainsMatch; // (*)
|
||
default:
|
||
MOZ_ASSERT(aToken1 == eCSSTokenSerialization_Nothing ||
|
||
aToken1 == eCSSTokenSerialization_Whitespace ||
|
||
aToken1 == eCSSTokenSerialization_Percentage ||
|
||
aToken1 == eCSSTokenSerialization_URL_or_BadURL ||
|
||
aToken1 == eCSSTokenSerialization_Function ||
|
||
aToken1 == eCSSTokenSerialization_CDC ||
|
||
aToken1 == eCSSTokenSerialization_Symbol_OpenParen ||
|
||
aToken1 == eCSSTokenSerialization_Symbol_Question ||
|
||
aToken1 == eCSSTokenSerialization_Symbol_Assorted ||
|
||
aToken1 == eCSSTokenSerialization_Symbol_Asterisk ||
|
||
aToken1 == eCSSTokenSerialization_Symbol_Equals ||
|
||
aToken1 == eCSSTokenSerialization_Symbol_Bar ||
|
||
aToken1 == eCSSTokenSerialization_Symbol_Slash ||
|
||
aToken1 == eCSSTokenSerialization_Other ||
|
||
"unexpected nsCSSTokenSerializationType value");
|
||
return false;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Appends aValue to aResult, possibly inserting an empty CSS
|
||
* comment between the two to ensure that tokens from both strings
|
||
* remain separated.
|
||
*/
|
||
static void
|
||
AppendTokens(nsAString& aResult,
|
||
nsCSSTokenSerializationType& aResultFirstToken,
|
||
nsCSSTokenSerializationType& aResultLastToken,
|
||
nsCSSTokenSerializationType aValueFirstToken,
|
||
nsCSSTokenSerializationType aValueLastToken,
|
||
const nsAString& aValue)
|
||
{
|
||
if (SeparatorRequiredBetweenTokens(aResultLastToken, aValueFirstToken)) {
|
||
aResult.AppendLiteral("/**/");
|
||
}
|
||
aResult.Append(aValue);
|
||
if (aResultFirstToken == eCSSTokenSerialization_Nothing) {
|
||
aResultFirstToken = aValueFirstToken;
|
||
}
|
||
if (aValueLastToken != eCSSTokenSerialization_Nothing) {
|
||
aResultLastToken = aValueLastToken;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Stops the given scanner recording, and appends the recorded result
|
||
* to aResult, possibly inserting an empty CSS comment between the two to
|
||
* ensure that tokens from both strings remain separated.
|
||
*/
|
||
static void
|
||
StopRecordingAndAppendTokens(nsString& aResult,
|
||
nsCSSTokenSerializationType& aResultFirstToken,
|
||
nsCSSTokenSerializationType& aResultLastToken,
|
||
nsCSSTokenSerializationType aValueFirstToken,
|
||
nsCSSTokenSerializationType aValueLastToken,
|
||
nsCSSScanner* aScanner)
|
||
{
|
||
if (SeparatorRequiredBetweenTokens(aResultLastToken, aValueFirstToken)) {
|
||
aResult.AppendLiteral("/**/");
|
||
}
|
||
aScanner->StopRecording(aResult);
|
||
if (aResultFirstToken == eCSSTokenSerialization_Nothing) {
|
||
aResultFirstToken = aValueFirstToken;
|
||
}
|
||
if (aValueLastToken != eCSSTokenSerialization_Nothing) {
|
||
aResultLastToken = aValueLastToken;
|
||
}
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ResolveValueWithVariableReferencesRec(
|
||
nsString& aResult,
|
||
nsCSSTokenSerializationType& aResultFirstToken,
|
||
nsCSSTokenSerializationType& aResultLastToken,
|
||
const CSSVariableValues* aVariables)
|
||
{
|
||
// This function assumes we are already recording, and will leave the scanner
|
||
// recording when it returns.
|
||
MOZ_ASSERT(mScanner->IsRecording());
|
||
MOZ_ASSERT(aResult.IsEmpty());
|
||
|
||
// Stack of closing characters for currently open constructs.
|
||
nsAutoTArray<char16_t, 16> stack;
|
||
|
||
// The resolved value for this ResolveValueWithVariableReferencesRec call.
|
||
nsString value;
|
||
|
||
// The length of the scanner's recording before the currently parsed token.
|
||
// This is used so that when we encounter a "var(" token, we can strip
|
||
// it off the end of the recording, regardless of how long the token was.
|
||
// (With escapes, it could be longer than four characters.)
|
||
uint32_t lengthBeforeVar = 0;
|
||
|
||
// Tracking the type of token that appears at the start and end of |value|
|
||
// and that appears at the start and end of the scanner recording. These are
|
||
// used to determine whether we need to insert "/**/" when pasting token
|
||
// streams together.
|
||
nsCSSTokenSerializationType valueFirstToken = eCSSTokenSerialization_Nothing,
|
||
valueLastToken = eCSSTokenSerialization_Nothing,
|
||
recFirstToken = eCSSTokenSerialization_Nothing,
|
||
recLastToken = eCSSTokenSerialization_Nothing;
|
||
|
||
#define UPDATE_RECORDING_TOKENS(type) \
|
||
if (recFirstToken == eCSSTokenSerialization_Nothing) { \
|
||
recFirstToken = type; \
|
||
} \
|
||
recLastToken = type;
|
||
|
||
while (GetToken(false)) {
|
||
switch (mToken.mType) {
|
||
case eCSSToken_Symbol: {
|
||
nsCSSTokenSerializationType type = eCSSTokenSerialization_Other;
|
||
if (mToken.mSymbol == '(') {
|
||
stack.AppendElement(')');
|
||
type = eCSSTokenSerialization_Symbol_OpenParen;
|
||
} else if (mToken.mSymbol == '[') {
|
||
stack.AppendElement(']');
|
||
} else if (mToken.mSymbol == '{') {
|
||
stack.AppendElement('}');
|
||
} else if (mToken.mSymbol == ';') {
|
||
if (stack.IsEmpty()) {
|
||
// A ';' that is at the top level of the value or at the top level
|
||
// of a variable reference's fallback is invalid.
|
||
return false;
|
||
}
|
||
} else if (mToken.mSymbol == '!') {
|
||
if (stack.IsEmpty()) {
|
||
// An '!' that is at the top level of the value or at the top level
|
||
// of a variable reference's fallback is invalid.
|
||
return false;
|
||
}
|
||
} else if (mToken.mSymbol == ')' &&
|
||
stack.IsEmpty()) {
|
||
// We're closing a "var(".
|
||
nsString finalTokens;
|
||
mScanner->StopRecording(finalTokens);
|
||
MOZ_ASSERT(finalTokens[finalTokens.Length() - 1] == ')');
|
||
finalTokens.Truncate(finalTokens.Length() - 1);
|
||
aResult.Append(value);
|
||
|
||
AppendTokens(aResult, valueFirstToken, valueLastToken,
|
||
recFirstToken, recLastToken, finalTokens);
|
||
|
||
mScanner->StartRecording();
|
||
UngetToken();
|
||
aResultFirstToken = valueFirstToken;
|
||
aResultLastToken = valueLastToken;
|
||
return true;
|
||
} else if (mToken.mSymbol == ')' ||
|
||
mToken.mSymbol == ']' ||
|
||
mToken.mSymbol == '}') {
|
||
if (stack.IsEmpty() ||
|
||
stack.LastElement() != mToken.mSymbol) {
|
||
// A mismatched closing bracket is invalid.
|
||
return false;
|
||
}
|
||
stack.TruncateLength(stack.Length() - 1);
|
||
} else if (mToken.mSymbol == '#') {
|
||
type = eCSSTokenSerialization_Symbol_Hash;
|
||
} else if (mToken.mSymbol == '@') {
|
||
type = eCSSTokenSerialization_Symbol_At;
|
||
} else if (mToken.mSymbol == '.' ||
|
||
mToken.mSymbol == '+') {
|
||
type = eCSSTokenSerialization_Symbol_Dot_or_Plus;
|
||
} else if (mToken.mSymbol == '-') {
|
||
type = eCSSTokenSerialization_Symbol_Minus;
|
||
} else if (mToken.mSymbol == '?') {
|
||
type = eCSSTokenSerialization_Symbol_Question;
|
||
} else if (mToken.mSymbol == '$' ||
|
||
mToken.mSymbol == '^' ||
|
||
mToken.mSymbol == '~') {
|
||
type = eCSSTokenSerialization_Symbol_Assorted;
|
||
} else if (mToken.mSymbol == '=') {
|
||
type = eCSSTokenSerialization_Symbol_Equals;
|
||
} else if (mToken.mSymbol == '|') {
|
||
type = eCSSTokenSerialization_Symbol_Bar;
|
||
} else if (mToken.mSymbol == '/') {
|
||
type = eCSSTokenSerialization_Symbol_Slash;
|
||
} else if (mToken.mSymbol == '*') {
|
||
type = eCSSTokenSerialization_Symbol_Asterisk;
|
||
}
|
||
UPDATE_RECORDING_TOKENS(type);
|
||
break;
|
||
}
|
||
|
||
case eCSSToken_Function:
|
||
if (mToken.mIdent.LowerCaseEqualsLiteral("var")) {
|
||
// Save the tokens before the "var(" to our resolved value.
|
||
nsString recording;
|
||
mScanner->StopRecording(recording);
|
||
recording.Truncate(lengthBeforeVar);
|
||
AppendTokens(value, valueFirstToken, valueLastToken,
|
||
recFirstToken, recLastToken, recording);
|
||
recFirstToken = eCSSTokenSerialization_Nothing;
|
||
recLastToken = eCSSTokenSerialization_Nothing;
|
||
|
||
if (!GetToken(true) ||
|
||
mToken.mType != eCSSToken_Ident) {
|
||
// "var(" must be followed by an identifier.
|
||
return false;
|
||
}
|
||
|
||
// Get the value of the identified variable. Note that we
|
||
// check if the variable value is the empty string, as that means
|
||
// that the variable was invalid at computed value time due to
|
||
// unresolveable variable references or cycles.
|
||
const nsString& variableName = mToken.mIdent;
|
||
nsString variableValue;
|
||
nsCSSTokenSerializationType varFirstToken, varLastToken;
|
||
bool valid = aVariables->Get(variableName, variableValue,
|
||
varFirstToken, varLastToken) &&
|
||
!variableValue.IsEmpty();
|
||
|
||
if (!GetToken(true) ||
|
||
mToken.IsSymbol(')')) {
|
||
mScanner->StartRecording();
|
||
if (!valid) {
|
||
// Invalid variable with no fallback.
|
||
return false;
|
||
}
|
||
// Valid variable with no fallback.
|
||
AppendTokens(value, valueFirstToken, valueLastToken,
|
||
varFirstToken, varLastToken, variableValue);
|
||
} else if (mToken.IsSymbol(',')) {
|
||
mScanner->StartRecording();
|
||
if (!GetToken(false) ||
|
||
mToken.IsSymbol(')')) {
|
||
// Comma must be followed by at least one fallback token.
|
||
return false;
|
||
}
|
||
UngetToken();
|
||
if (valid) {
|
||
// Valid variable with ignored fallback.
|
||
mScanner->StopRecording();
|
||
AppendTokens(value, valueFirstToken, valueLastToken,
|
||
varFirstToken, varLastToken, variableValue);
|
||
bool ok = SkipBalancedContentUntil(')');
|
||
mScanner->StartRecording();
|
||
if (!ok) {
|
||
return false;
|
||
}
|
||
} else {
|
||
nsString fallback;
|
||
if (!ResolveValueWithVariableReferencesRec(fallback,
|
||
varFirstToken,
|
||
varLastToken,
|
||
aVariables)) {
|
||
// Fallback value had invalid tokens or an invalid variable reference
|
||
// that itself had no fallback.
|
||
return false;
|
||
}
|
||
AppendTokens(value, valueFirstToken, valueLastToken,
|
||
varFirstToken, varLastToken, fallback);
|
||
// Now we're either at the pushed back ')' that finished the
|
||
// fallback or at EOF.
|
||
DebugOnly<bool> gotToken = GetToken(false);
|
||
MOZ_ASSERT(!gotToken || mToken.IsSymbol(')'));
|
||
}
|
||
} else {
|
||
// Expected ',' or ')' after the variable name.
|
||
mScanner->StartRecording();
|
||
return false;
|
||
}
|
||
} else {
|
||
stack.AppendElement(')');
|
||
UPDATE_RECORDING_TOKENS(eCSSTokenSerialization_Function);
|
||
}
|
||
break;
|
||
|
||
case eCSSToken_Bad_String:
|
||
case eCSSToken_Bad_URL:
|
||
return false;
|
||
|
||
case eCSSToken_Whitespace:
|
||
UPDATE_RECORDING_TOKENS(eCSSTokenSerialization_Whitespace);
|
||
break;
|
||
|
||
case eCSSToken_AtKeyword:
|
||
case eCSSToken_Hash:
|
||
UPDATE_RECORDING_TOKENS(eCSSTokenSerialization_AtKeyword_or_Hash);
|
||
break;
|
||
|
||
case eCSSToken_Number:
|
||
UPDATE_RECORDING_TOKENS(eCSSTokenSerialization_Number);
|
||
break;
|
||
|
||
case eCSSToken_Dimension:
|
||
UPDATE_RECORDING_TOKENS(eCSSTokenSerialization_Dimension);
|
||
break;
|
||
|
||
case eCSSToken_Ident:
|
||
UPDATE_RECORDING_TOKENS(eCSSTokenSerialization_Ident);
|
||
break;
|
||
|
||
case eCSSToken_Percentage:
|
||
UPDATE_RECORDING_TOKENS(eCSSTokenSerialization_Percentage);
|
||
break;
|
||
|
||
case eCSSToken_URange:
|
||
UPDATE_RECORDING_TOKENS(eCSSTokenSerialization_URange);
|
||
break;
|
||
|
||
case eCSSToken_URL:
|
||
UPDATE_RECORDING_TOKENS(eCSSTokenSerialization_URL_or_BadURL);
|
||
break;
|
||
|
||
case eCSSToken_HTMLComment:
|
||
if (mToken.mIdent[0] == '-') {
|
||
UPDATE_RECORDING_TOKENS(eCSSTokenSerialization_CDC);
|
||
} else {
|
||
UPDATE_RECORDING_TOKENS(eCSSTokenSerialization_Other);
|
||
}
|
||
break;
|
||
|
||
case eCSSToken_Dashmatch:
|
||
UPDATE_RECORDING_TOKENS(eCSSTokenSerialization_DashMatch);
|
||
break;
|
||
|
||
case eCSSToken_Containsmatch:
|
||
UPDATE_RECORDING_TOKENS(eCSSTokenSerialization_ContainsMatch);
|
||
break;
|
||
|
||
default:
|
||
NS_NOTREACHED("unexpected token type");
|
||
// fall through
|
||
case eCSSToken_ID:
|
||
case eCSSToken_String:
|
||
case eCSSToken_Includes:
|
||
case eCSSToken_Beginsmatch:
|
||
case eCSSToken_Endsmatch:
|
||
UPDATE_RECORDING_TOKENS(eCSSTokenSerialization_Other);
|
||
break;
|
||
}
|
||
|
||
lengthBeforeVar = mScanner->RecordingLength();
|
||
}
|
||
|
||
#undef UPDATE_RECORDING_TOKENS
|
||
|
||
aResult.Append(value);
|
||
StopRecordingAndAppendTokens(aResult, valueFirstToken, valueLastToken,
|
||
recFirstToken, recLastToken, mScanner);
|
||
|
||
// Append any implicitly closed brackets.
|
||
if (!stack.IsEmpty()) {
|
||
do {
|
||
aResult.Append(stack.LastElement());
|
||
stack.TruncateLength(stack.Length() - 1);
|
||
} while (!stack.IsEmpty());
|
||
valueLastToken = eCSSTokenSerialization_Other;
|
||
}
|
||
|
||
mScanner->StartRecording();
|
||
aResultFirstToken = valueFirstToken;
|
||
aResultLastToken = valueLastToken;
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ResolveValueWithVariableReferences(
|
||
const CSSVariableValues* aVariables,
|
||
nsString& aResult,
|
||
nsCSSTokenSerializationType& aFirstToken,
|
||
nsCSSTokenSerializationType& aLastToken)
|
||
{
|
||
aResult.Truncate(0);
|
||
|
||
// Start recording before we read the first token.
|
||
mScanner->StartRecording();
|
||
|
||
if (!GetToken(false)) {
|
||
// Value was empty since we reached EOF.
|
||
mScanner->StopRecording();
|
||
return false;
|
||
}
|
||
|
||
UngetToken();
|
||
|
||
nsString value;
|
||
nsCSSTokenSerializationType firstToken, lastToken;
|
||
bool ok = ResolveValueWithVariableReferencesRec(value, firstToken, lastToken, aVariables) &&
|
||
!GetToken(true);
|
||
|
||
mScanner->StopRecording();
|
||
|
||
if (ok) {
|
||
aResult = value;
|
||
aFirstToken = firstToken;
|
||
aLastToken = lastToken;
|
||
}
|
||
return ok;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ResolveVariableValue(const nsAString& aPropertyValue,
|
||
const CSSVariableValues* aVariables,
|
||
nsString& aResult,
|
||
nsCSSTokenSerializationType& aFirstToken,
|
||
nsCSSTokenSerializationType& aLastToken)
|
||
{
|
||
nsCSSScanner scanner(aPropertyValue, 0);
|
||
|
||
// At this point, we know that aPropertyValue is syntactically correct
|
||
// for a token stream that has variable references. We also won't be
|
||
// interpreting any of the stream as we parse it, apart from expanding
|
||
// var() references, so we don't need a base URL etc. or any useful
|
||
// error reporting.
|
||
css::ErrorReporter reporter(scanner, nullptr, nullptr, nullptr);
|
||
InitScanner(scanner, reporter, nullptr, nullptr, nullptr);
|
||
|
||
bool valid = ResolveValueWithVariableReferences(aVariables, aResult,
|
||
aFirstToken, aLastToken);
|
||
|
||
ReleaseScanner();
|
||
return valid;
|
||
}
|
||
|
||
void
|
||
CSSParserImpl::ParsePropertyWithVariableReferences(
|
||
nsCSSProperty aPropertyID,
|
||
nsCSSProperty aShorthandPropertyID,
|
||
const nsAString& aValue,
|
||
const CSSVariableValues* aVariables,
|
||
nsRuleData* aRuleData,
|
||
nsIURI* aDocURL,
|
||
nsIURI* aBaseURL,
|
||
nsIPrincipal* aDocPrincipal,
|
||
nsCSSStyleSheet* aSheet,
|
||
uint32_t aLineNumber,
|
||
uint32_t aLineOffset)
|
||
{
|
||
mTempData.AssertInitialState();
|
||
|
||
bool valid;
|
||
nsString expandedValue;
|
||
|
||
// Resolve any variable references in the property value.
|
||
{
|
||
nsCSSScanner scanner(aValue, 0);
|
||
css::ErrorReporter reporter(scanner, aSheet, mChildLoader, aDocURL);
|
||
InitScanner(scanner, reporter, aDocURL, aBaseURL, aDocPrincipal);
|
||
|
||
nsCSSTokenSerializationType firstToken, lastToken;
|
||
valid = ResolveValueWithVariableReferences(aVariables, expandedValue,
|
||
firstToken, lastToken);
|
||
if (!valid) {
|
||
NS_ConvertASCIItoUTF16 propName(nsCSSProps::GetStringValue(aPropertyID));
|
||
REPORT_UNEXPECTED(PEInvalidVariableReference);
|
||
REPORT_UNEXPECTED_P(PEValueParsingError, propName);
|
||
if (nsCSSProps::IsInherited(aPropertyID)) {
|
||
REPORT_UNEXPECTED(PEValueWithVariablesFallbackInherit);
|
||
} else {
|
||
REPORT_UNEXPECTED(PEValueWithVariablesFallbackInitial);
|
||
}
|
||
OUTPUT_ERROR_WITH_POSITION(aLineNumber, aLineOffset);
|
||
}
|
||
ReleaseScanner();
|
||
}
|
||
|
||
nsCSSProperty propertyToParse =
|
||
aShorthandPropertyID != eCSSProperty_UNKNOWN ? aShorthandPropertyID :
|
||
aPropertyID;
|
||
|
||
// Parse the property with that resolved value.
|
||
if (valid) {
|
||
nsCSSScanner scanner(expandedValue, 0);
|
||
css::ErrorReporter reporter(scanner, aSheet, mChildLoader, aDocURL);
|
||
InitScanner(scanner, reporter, aDocURL, aBaseURL, aDocPrincipal);
|
||
valid = ParseProperty(propertyToParse);
|
||
if (valid && GetToken(true)) {
|
||
REPORT_UNEXPECTED_TOKEN(PEExpectEndValue);
|
||
valid = false;
|
||
}
|
||
if (!valid) {
|
||
NS_ConvertASCIItoUTF16 propName(nsCSSProps::GetStringValue(
|
||
propertyToParse));
|
||
REPORT_UNEXPECTED_P(PEValueWithVariablesParsingError, propName);
|
||
if (nsCSSProps::IsInherited(aPropertyID)) {
|
||
REPORT_UNEXPECTED(PEValueWithVariablesFallbackInherit);
|
||
} else {
|
||
REPORT_UNEXPECTED(PEValueWithVariablesFallbackInitial);
|
||
}
|
||
OUTPUT_ERROR_WITH_POSITION(aLineNumber, aLineOffset);
|
||
}
|
||
ReleaseScanner();
|
||
}
|
||
|
||
// If the property could not be parsed with the resolved value, then we
|
||
// treat it as if the value were 'initial' or 'inherit', depending on whether
|
||
// the property is an inherited property.
|
||
if (!valid) {
|
||
nsCSSValue defaultValue;
|
||
if (nsCSSProps::IsInherited(aPropertyID)) {
|
||
defaultValue.SetInheritValue();
|
||
} else {
|
||
defaultValue.SetInitialValue();
|
||
}
|
||
mTempData.AddLonghandProperty(aPropertyID, defaultValue);
|
||
}
|
||
|
||
// Copy the property value into the rule data.
|
||
mTempData.MapRuleInfoInto(aPropertyID, aRuleData);
|
||
|
||
mTempData.ClearProperty(propertyToParse);
|
||
mTempData.AssertInitialState();
|
||
}
|
||
|
||
//----------------------------------------------------------------------
|
||
|
||
bool
|
||
CSSParserImpl::GetToken(bool aSkipWS)
|
||
{
|
||
if (mHavePushBack) {
|
||
mHavePushBack = false;
|
||
if (!aSkipWS || mToken.mType != eCSSToken_Whitespace) {
|
||
return true;
|
||
}
|
||
}
|
||
return mScanner->Next(mToken, aSkipWS);
|
||
}
|
||
|
||
void
|
||
CSSParserImpl::UngetToken()
|
||
{
|
||
NS_PRECONDITION(!mHavePushBack, "double pushback");
|
||
mHavePushBack = true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::GetNextTokenLocation(bool aSkipWS, uint32_t *linenum, uint32_t *colnum)
|
||
{
|
||
// Peek at next token so that mScanner updates line and column vals
|
||
if (!GetToken(aSkipWS)) {
|
||
return false;
|
||
}
|
||
UngetToken();
|
||
// The scanner uses one-indexing for line numbers but zero-indexing
|
||
// for column numbers.
|
||
*linenum = mScanner->GetLineNumber();
|
||
*colnum = 1 + mScanner->GetColumnNumber();
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ExpectSymbol(char16_t aSymbol,
|
||
bool aSkipWS)
|
||
{
|
||
if (!GetToken(aSkipWS)) {
|
||
// CSS2.1 specifies that all "open constructs" are to be closed at
|
||
// EOF. It simplifies higher layers if we claim to have found an
|
||
// ), ], }, or ; if we encounter EOF while looking for one of them.
|
||
// Do still issue a diagnostic, to aid debugging.
|
||
if (aSymbol == ')' || aSymbol == ']' ||
|
||
aSymbol == '}' || aSymbol == ';') {
|
||
REPORT_UNEXPECTED_EOF_CHAR(aSymbol);
|
||
return true;
|
||
}
|
||
else
|
||
return false;
|
||
}
|
||
if (mToken.IsSymbol(aSymbol)) {
|
||
return true;
|
||
}
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
|
||
// Checks to see if we're at the end of a property. If an error occurs during
|
||
// the check, does not signal a parse error.
|
||
bool
|
||
CSSParserImpl::CheckEndProperty()
|
||
{
|
||
if (!GetToken(true)) {
|
||
return true; // properties may end with eof
|
||
}
|
||
if ((eCSSToken_Symbol == mToken.mType) &&
|
||
((';' == mToken.mSymbol) ||
|
||
('!' == mToken.mSymbol) ||
|
||
('}' == mToken.mSymbol) ||
|
||
(')' == mToken.mSymbol))) {
|
||
// XXX need to verify that ! is only followed by "important [;|}]
|
||
// XXX this requires a multi-token pushback buffer
|
||
UngetToken();
|
||
return true;
|
||
}
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
|
||
// Checks if we're at the end of a property, raising an error if we're not.
|
||
bool
|
||
CSSParserImpl::ExpectEndProperty()
|
||
{
|
||
if (CheckEndProperty())
|
||
return true;
|
||
|
||
// If we're here, we read something incorrect, so we should report it.
|
||
REPORT_UNEXPECTED_TOKEN(PEExpectEndValue);
|
||
return false;
|
||
}
|
||
|
||
// Parses the priority suffix on a property, which at present may be
|
||
// either '!important' or nothing.
|
||
CSSParserImpl::PriorityParsingStatus
|
||
CSSParserImpl::ParsePriority()
|
||
{
|
||
if (!GetToken(true)) {
|
||
return ePriority_None; // properties may end with EOF
|
||
}
|
||
if (!mToken.IsSymbol('!')) {
|
||
UngetToken();
|
||
return ePriority_None; // dunno what it is, but it's not a priority
|
||
}
|
||
|
||
if (!GetToken(true)) {
|
||
// EOF is not ok after !
|
||
REPORT_UNEXPECTED_EOF(PEImportantEOF);
|
||
return ePriority_Error;
|
||
}
|
||
|
||
if (mToken.mType != eCSSToken_Ident ||
|
||
!mToken.mIdent.LowerCaseEqualsLiteral("important")) {
|
||
REPORT_UNEXPECTED_TOKEN(PEExpectedImportant);
|
||
UngetToken();
|
||
return ePriority_Error;
|
||
}
|
||
|
||
return ePriority_Important;
|
||
}
|
||
|
||
nsSubstring*
|
||
CSSParserImpl::NextIdent()
|
||
{
|
||
// XXX Error reporting?
|
||
if (!GetToken(true)) {
|
||
return nullptr;
|
||
}
|
||
if (eCSSToken_Ident != mToken.mType) {
|
||
UngetToken();
|
||
return nullptr;
|
||
}
|
||
return &mToken.mIdent;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::SkipAtRule(bool aInsideBlock)
|
||
{
|
||
for (;;) {
|
||
if (!GetToken(true)) {
|
||
REPORT_UNEXPECTED_EOF(PESkipAtRuleEOF2);
|
||
return false;
|
||
}
|
||
if (eCSSToken_Symbol == mToken.mType) {
|
||
char16_t symbol = mToken.mSymbol;
|
||
if (symbol == ';') {
|
||
break;
|
||
}
|
||
if (aInsideBlock && symbol == '}') {
|
||
// The closing } doesn't belong to us.
|
||
UngetToken();
|
||
break;
|
||
}
|
||
if (symbol == '{') {
|
||
SkipUntil('}');
|
||
break;
|
||
} else if (symbol == '(') {
|
||
SkipUntil(')');
|
||
} else if (symbol == '[') {
|
||
SkipUntil(']');
|
||
}
|
||
} else if (eCSSToken_Function == mToken.mType ||
|
||
eCSSToken_Bad_URL == mToken.mType) {
|
||
SkipUntil(')');
|
||
}
|
||
}
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseAtRule(RuleAppendFunc aAppendFunc,
|
||
void* aData,
|
||
bool aInAtRule)
|
||
{
|
||
|
||
nsCSSSection newSection;
|
||
bool (CSSParserImpl::*parseFunc)(RuleAppendFunc, void*);
|
||
|
||
if ((mSection <= eCSSSection_Charset) &&
|
||
(mToken.mIdent.LowerCaseEqualsLiteral("charset"))) {
|
||
parseFunc = &CSSParserImpl::ParseCharsetRule;
|
||
newSection = eCSSSection_Import; // only one charset allowed
|
||
|
||
} else if ((mSection <= eCSSSection_Import) &&
|
||
mToken.mIdent.LowerCaseEqualsLiteral("import")) {
|
||
parseFunc = &CSSParserImpl::ParseImportRule;
|
||
newSection = eCSSSection_Import;
|
||
|
||
} else if ((mSection <= eCSSSection_NameSpace) &&
|
||
mToken.mIdent.LowerCaseEqualsLiteral("namespace")) {
|
||
parseFunc = &CSSParserImpl::ParseNameSpaceRule;
|
||
newSection = eCSSSection_NameSpace;
|
||
|
||
} else if (mToken.mIdent.LowerCaseEqualsLiteral("media")) {
|
||
parseFunc = &CSSParserImpl::ParseMediaRule;
|
||
newSection = eCSSSection_General;
|
||
|
||
} else if (mToken.mIdent.LowerCaseEqualsLiteral("-moz-document")) {
|
||
parseFunc = &CSSParserImpl::ParseMozDocumentRule;
|
||
newSection = eCSSSection_General;
|
||
|
||
} else if (mToken.mIdent.LowerCaseEqualsLiteral("font-face")) {
|
||
parseFunc = &CSSParserImpl::ParseFontFaceRule;
|
||
newSection = eCSSSection_General;
|
||
|
||
} else if (mToken.mIdent.LowerCaseEqualsLiteral("font-feature-values") &&
|
||
nsCSSFontFeatureValuesRule::PrefEnabled()) {
|
||
parseFunc = &CSSParserImpl::ParseFontFeatureValuesRule;
|
||
newSection = eCSSSection_General;
|
||
|
||
} else if (mToken.mIdent.LowerCaseEqualsLiteral("page")) {
|
||
parseFunc = &CSSParserImpl::ParsePageRule;
|
||
newSection = eCSSSection_General;
|
||
|
||
} else if ((nsCSSProps::IsEnabled(eCSSPropertyAlias_MozAnimation) &&
|
||
mToken.mIdent.LowerCaseEqualsLiteral("-moz-keyframes")) ||
|
||
mToken.mIdent.LowerCaseEqualsLiteral("keyframes")) {
|
||
parseFunc = &CSSParserImpl::ParseKeyframesRule;
|
||
newSection = eCSSSection_General;
|
||
|
||
} else if (mToken.mIdent.LowerCaseEqualsLiteral("supports") &&
|
||
CSSSupportsRule::PrefEnabled()) {
|
||
parseFunc = &CSSParserImpl::ParseSupportsRule;
|
||
newSection = eCSSSection_General;
|
||
|
||
} else {
|
||
if (!NonMozillaVendorIdentifier(mToken.mIdent)) {
|
||
REPORT_UNEXPECTED_TOKEN(PEUnknownAtRule);
|
||
OUTPUT_ERROR();
|
||
}
|
||
// Skip over unsupported at rule, don't advance section
|
||
return SkipAtRule(aInAtRule);
|
||
}
|
||
|
||
// Inside of @-rules, only the rules that can occur anywhere
|
||
// are allowed.
|
||
bool unnestable = aInAtRule && newSection != eCSSSection_General;
|
||
if (unnestable) {
|
||
REPORT_UNEXPECTED_TOKEN(PEGroupRuleNestedAtRule);
|
||
}
|
||
|
||
if (unnestable || !(this->*parseFunc)(aAppendFunc, aData)) {
|
||
// Skip over invalid at rule, don't advance section
|
||
OUTPUT_ERROR();
|
||
return SkipAtRule(aInAtRule);
|
||
}
|
||
|
||
// Nested @-rules don't affect the top-level rule chain requirement
|
||
if (!aInAtRule) {
|
||
mSection = newSection;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseCharsetRule(RuleAppendFunc aAppendFunc,
|
||
void* aData)
|
||
{
|
||
if (!GetToken(true)) {
|
||
REPORT_UNEXPECTED_EOF(PECharsetRuleEOF);
|
||
return false;
|
||
}
|
||
|
||
if (eCSSToken_String != mToken.mType) {
|
||
UngetToken();
|
||
REPORT_UNEXPECTED_TOKEN(PECharsetRuleNotString);
|
||
return false;
|
||
}
|
||
|
||
nsAutoString charset = mToken.mIdent;
|
||
|
||
if (!ExpectSymbol(';', true)) {
|
||
return false;
|
||
}
|
||
|
||
nsRefPtr<css::CharsetRule> rule = new css::CharsetRule(charset);
|
||
(*aAppendFunc)(rule, aData);
|
||
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseURLOrString(nsString& aURL)
|
||
{
|
||
if (!GetToken(true)) {
|
||
return false;
|
||
}
|
||
if (eCSSToken_String == mToken.mType || eCSSToken_URL == mToken.mType) {
|
||
aURL = mToken.mIdent;
|
||
return true;
|
||
}
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseMediaQuery(bool aInAtRule,
|
||
nsMediaQuery **aQuery,
|
||
bool *aHitStop)
|
||
{
|
||
*aQuery = nullptr;
|
||
*aHitStop = false;
|
||
|
||
// "If the comma-separated list is the empty list it is assumed to
|
||
// specify the media query 'all'." (css3-mediaqueries, section
|
||
// "Media Queries")
|
||
if (!GetToken(true)) {
|
||
*aHitStop = true;
|
||
// expected termination by EOF
|
||
if (!aInAtRule)
|
||
return true;
|
||
|
||
// unexpected termination by EOF
|
||
REPORT_UNEXPECTED_EOF(PEGatherMediaEOF);
|
||
return true;
|
||
}
|
||
|
||
if (eCSSToken_Symbol == mToken.mType && aInAtRule &&
|
||
(mToken.mSymbol == ';' || mToken.mSymbol == '{' || mToken.mSymbol == '}' )) {
|
||
*aHitStop = true;
|
||
UngetToken();
|
||
return true;
|
||
}
|
||
UngetToken();
|
||
|
||
nsMediaQuery* query = new nsMediaQuery;
|
||
*aQuery = query;
|
||
|
||
if (ExpectSymbol('(', true)) {
|
||
// we got an expression without a media type
|
||
UngetToken(); // so ParseMediaQueryExpression can handle it
|
||
query->SetType(nsGkAtoms::all);
|
||
query->SetTypeOmitted();
|
||
// Just parse the first expression here.
|
||
if (!ParseMediaQueryExpression(query)) {
|
||
OUTPUT_ERROR();
|
||
query->SetHadUnknownExpression();
|
||
}
|
||
} else {
|
||
nsCOMPtr<nsIAtom> mediaType;
|
||
bool gotNotOrOnly = false;
|
||
for (;;) {
|
||
if (!GetToken(true)) {
|
||
REPORT_UNEXPECTED_EOF(PEGatherMediaEOF);
|
||
return false;
|
||
}
|
||
if (eCSSToken_Ident != mToken.mType) {
|
||
REPORT_UNEXPECTED_TOKEN(PEGatherMediaNotIdent);
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
// case insensitive from CSS - must be lower cased
|
||
nsContentUtils::ASCIIToLower(mToken.mIdent);
|
||
mediaType = do_GetAtom(mToken.mIdent);
|
||
if (!mediaType) {
|
||
NS_RUNTIMEABORT("do_GetAtom failed - out of memory?");
|
||
}
|
||
if (!gotNotOrOnly && mediaType == nsGkAtoms::_not) {
|
||
gotNotOrOnly = true;
|
||
query->SetNegated();
|
||
} else if (!gotNotOrOnly && mediaType == nsGkAtoms::only) {
|
||
gotNotOrOnly = true;
|
||
query->SetHasOnly();
|
||
} else if (mediaType == nsGkAtoms::_not ||
|
||
mediaType == nsGkAtoms::only ||
|
||
mediaType == nsGkAtoms::_and ||
|
||
mediaType == nsGkAtoms::_or) {
|
||
REPORT_UNEXPECTED_TOKEN(PEGatherMediaReservedMediaType);
|
||
UngetToken();
|
||
return false;
|
||
} else {
|
||
// valid media type
|
||
break;
|
||
}
|
||
}
|
||
query->SetType(mediaType);
|
||
}
|
||
|
||
for (;;) {
|
||
if (!GetToken(true)) {
|
||
*aHitStop = true;
|
||
// expected termination by EOF
|
||
if (!aInAtRule)
|
||
break;
|
||
|
||
// unexpected termination by EOF
|
||
REPORT_UNEXPECTED_EOF(PEGatherMediaEOF);
|
||
break;
|
||
}
|
||
|
||
if (eCSSToken_Symbol == mToken.mType && aInAtRule &&
|
||
(mToken.mSymbol == ';' || mToken.mSymbol == '{' || mToken.mSymbol == '}')) {
|
||
*aHitStop = true;
|
||
UngetToken();
|
||
break;
|
||
}
|
||
if (eCSSToken_Symbol == mToken.mType && mToken.mSymbol == ',') {
|
||
// Done with the expressions for this query
|
||
break;
|
||
}
|
||
if (eCSSToken_Ident != mToken.mType ||
|
||
!mToken.mIdent.LowerCaseEqualsLiteral("and")) {
|
||
REPORT_UNEXPECTED_TOKEN(PEGatherMediaNotComma);
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
if (!ParseMediaQueryExpression(query)) {
|
||
OUTPUT_ERROR();
|
||
query->SetHadUnknownExpression();
|
||
}
|
||
}
|
||
return true;
|
||
}
|
||
|
||
// Returns false only when there is a low-level error in the scanner
|
||
// (out-of-memory).
|
||
bool
|
||
CSSParserImpl::GatherMedia(nsMediaList* aMedia,
|
||
bool aInAtRule)
|
||
{
|
||
for (;;) {
|
||
nsAutoPtr<nsMediaQuery> query;
|
||
bool hitStop;
|
||
if (!ParseMediaQuery(aInAtRule, getter_Transfers(query),
|
||
&hitStop)) {
|
||
NS_ASSERTION(!hitStop, "should return true when hit stop");
|
||
OUTPUT_ERROR();
|
||
if (query) {
|
||
query->SetHadUnknownExpression();
|
||
}
|
||
if (aInAtRule) {
|
||
const char16_t stopChars[] =
|
||
{ char16_t(','), char16_t('{'), char16_t(';'), char16_t('}'), char16_t(0) };
|
||
SkipUntilOneOf(stopChars);
|
||
} else {
|
||
SkipUntil(',');
|
||
}
|
||
// Rely on SkipUntilOneOf leaving mToken around as the last token read.
|
||
if (mToken.mType == eCSSToken_Symbol && aInAtRule &&
|
||
(mToken.mSymbol == '{' || mToken.mSymbol == ';' || mToken.mSymbol == '}')) {
|
||
UngetToken();
|
||
hitStop = true;
|
||
}
|
||
}
|
||
if (query) {
|
||
aMedia->AppendQuery(query);
|
||
}
|
||
if (hitStop) {
|
||
break;
|
||
}
|
||
}
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseMediaQueryExpression(nsMediaQuery* aQuery)
|
||
{
|
||
if (!ExpectSymbol('(', true)) {
|
||
REPORT_UNEXPECTED_TOKEN(PEMQExpectedExpressionStart);
|
||
return false;
|
||
}
|
||
if (! GetToken(true)) {
|
||
REPORT_UNEXPECTED_EOF(PEMQExpressionEOF);
|
||
return false;
|
||
}
|
||
if (eCSSToken_Ident != mToken.mType) {
|
||
REPORT_UNEXPECTED_TOKEN(PEMQExpectedFeatureName);
|
||
UngetToken();
|
||
SkipUntil(')');
|
||
return false;
|
||
}
|
||
|
||
nsMediaExpression *expr = aQuery->NewExpression();
|
||
|
||
// case insensitive from CSS - must be lower cased
|
||
nsContentUtils::ASCIIToLower(mToken.mIdent);
|
||
const char16_t *featureString;
|
||
if (StringBeginsWith(mToken.mIdent, NS_LITERAL_STRING("min-"))) {
|
||
expr->mRange = nsMediaExpression::eMin;
|
||
featureString = mToken.mIdent.get() + 4;
|
||
} else if (StringBeginsWith(mToken.mIdent, NS_LITERAL_STRING("max-"))) {
|
||
expr->mRange = nsMediaExpression::eMax;
|
||
featureString = mToken.mIdent.get() + 4;
|
||
} else {
|
||
expr->mRange = nsMediaExpression::eEqual;
|
||
featureString = mToken.mIdent.get();
|
||
}
|
||
|
||
nsCOMPtr<nsIAtom> mediaFeatureAtom = do_GetAtom(featureString);
|
||
if (!mediaFeatureAtom) {
|
||
NS_RUNTIMEABORT("do_GetAtom failed - out of memory?");
|
||
}
|
||
const nsMediaFeature *feature = nsMediaFeatures::features;
|
||
for (; feature->mName; ++feature) {
|
||
if (*(feature->mName) == mediaFeatureAtom) {
|
||
break;
|
||
}
|
||
}
|
||
if (!feature->mName ||
|
||
(expr->mRange != nsMediaExpression::eEqual &&
|
||
feature->mRangeType != nsMediaFeature::eMinMaxAllowed)) {
|
||
REPORT_UNEXPECTED_TOKEN(PEMQExpectedFeatureName);
|
||
SkipUntil(')');
|
||
return false;
|
||
}
|
||
expr->mFeature = feature;
|
||
|
||
if (!GetToken(true) || mToken.IsSymbol(')')) {
|
||
// Query expressions for any feature can be given without a value.
|
||
// However, min/max prefixes are not allowed.
|
||
if (expr->mRange != nsMediaExpression::eEqual) {
|
||
REPORT_UNEXPECTED(PEMQNoMinMaxWithoutValue);
|
||
return false;
|
||
}
|
||
expr->mValue.Reset();
|
||
return true;
|
||
}
|
||
|
||
if (!mToken.IsSymbol(':')) {
|
||
REPORT_UNEXPECTED_TOKEN(PEMQExpectedFeatureNameEnd);
|
||
UngetToken();
|
||
SkipUntil(')');
|
||
return false;
|
||
}
|
||
|
||
bool rv;
|
||
switch (feature->mValueType) {
|
||
case nsMediaFeature::eLength:
|
||
rv = ParseNonNegativeVariant(expr->mValue, VARIANT_LENGTH, nullptr);
|
||
break;
|
||
case nsMediaFeature::eInteger:
|
||
case nsMediaFeature::eBoolInteger:
|
||
rv = ParseNonNegativeVariant(expr->mValue, VARIANT_INTEGER, nullptr);
|
||
// Enforce extra restrictions for eBoolInteger
|
||
if (rv &&
|
||
feature->mValueType == nsMediaFeature::eBoolInteger &&
|
||
expr->mValue.GetIntValue() > 1)
|
||
rv = false;
|
||
break;
|
||
case nsMediaFeature::eFloat:
|
||
rv = ParseNonNegativeVariant(expr->mValue, VARIANT_NUMBER, nullptr);
|
||
break;
|
||
case nsMediaFeature::eIntRatio:
|
||
{
|
||
// Two integers separated by '/', with optional whitespace on
|
||
// either side of the '/'.
|
||
nsRefPtr<nsCSSValue::Array> a = nsCSSValue::Array::Create(2);
|
||
expr->mValue.SetArrayValue(a, eCSSUnit_Array);
|
||
// We don't bother with ParseNonNegativeVariant since we have to
|
||
// check for != 0 as well; no need to worry about the UngetToken
|
||
// since we're throwing out up to the next ')' anyway.
|
||
rv = ParseVariant(a->Item(0), VARIANT_INTEGER, nullptr) &&
|
||
a->Item(0).GetIntValue() > 0 &&
|
||
ExpectSymbol('/', true) &&
|
||
ParseVariant(a->Item(1), VARIANT_INTEGER, nullptr) &&
|
||
a->Item(1).GetIntValue() > 0;
|
||
}
|
||
break;
|
||
case nsMediaFeature::eResolution:
|
||
rv = GetToken(true);
|
||
if (!rv)
|
||
break;
|
||
rv = mToken.mType == eCSSToken_Dimension && mToken.mNumber > 0.0f;
|
||
if (!rv) {
|
||
UngetToken();
|
||
break;
|
||
}
|
||
// No worries about whether unitless zero is allowed, since the
|
||
// value must be positive (and we checked that above).
|
||
NS_ASSERTION(!mToken.mIdent.IsEmpty(), "unit lied");
|
||
if (mToken.mIdent.LowerCaseEqualsLiteral("dpi")) {
|
||
expr->mValue.SetFloatValue(mToken.mNumber, eCSSUnit_Inch);
|
||
} else if (mToken.mIdent.LowerCaseEqualsLiteral("dppx")) {
|
||
expr->mValue.SetFloatValue(mToken.mNumber, eCSSUnit_Pixel);
|
||
} else if (mToken.mIdent.LowerCaseEqualsLiteral("dpcm")) {
|
||
expr->mValue.SetFloatValue(mToken.mNumber, eCSSUnit_Centimeter);
|
||
} else {
|
||
rv = false;
|
||
}
|
||
break;
|
||
case nsMediaFeature::eEnumerated:
|
||
rv = ParseVariant(expr->mValue, VARIANT_KEYWORD,
|
||
feature->mData.mKeywordTable);
|
||
break;
|
||
case nsMediaFeature::eIdent:
|
||
rv = ParseVariant(expr->mValue, VARIANT_IDENTIFIER, nullptr);
|
||
break;
|
||
}
|
||
if (!rv || !ExpectSymbol(')', true)) {
|
||
REPORT_UNEXPECTED(PEMQExpectedFeatureValue);
|
||
SkipUntil(')');
|
||
return false;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
// Parse a CSS2 import rule: "@import STRING | URL [medium [, medium]]"
|
||
bool
|
||
CSSParserImpl::ParseImportRule(RuleAppendFunc aAppendFunc, void* aData)
|
||
{
|
||
nsRefPtr<nsMediaList> media = new nsMediaList();
|
||
|
||
nsAutoString url;
|
||
if (!ParseURLOrString(url)) {
|
||
REPORT_UNEXPECTED_TOKEN(PEImportNotURI);
|
||
return false;
|
||
}
|
||
|
||
if (!ExpectSymbol(';', true)) {
|
||
if (!GatherMedia(media, true) ||
|
||
!ExpectSymbol(';', true)) {
|
||
REPORT_UNEXPECTED_TOKEN(PEImportUnexpected);
|
||
// don't advance section, simply ignore invalid @import
|
||
return false;
|
||
}
|
||
|
||
// Safe to assert this, since we ensured that there is something
|
||
// other than the ';' coming after the @import's url() token.
|
||
NS_ASSERTION(media->Length() != 0, "media list must be nonempty");
|
||
}
|
||
|
||
ProcessImport(url, media, aAppendFunc, aData);
|
||
return true;
|
||
}
|
||
|
||
|
||
void
|
||
CSSParserImpl::ProcessImport(const nsString& aURLSpec,
|
||
nsMediaList* aMedia,
|
||
RuleAppendFunc aAppendFunc,
|
||
void* aData)
|
||
{
|
||
nsRefPtr<css::ImportRule> rule = new css::ImportRule(aMedia, aURLSpec);
|
||
(*aAppendFunc)(rule, aData);
|
||
|
||
// Diagnose bad URIs even if we don't have a child loader.
|
||
nsCOMPtr<nsIURI> url;
|
||
// Charset will be deduced from mBaseURI, which is more or less correct.
|
||
nsresult rv = NS_NewURI(getter_AddRefs(url), aURLSpec, nullptr, mBaseURI);
|
||
|
||
if (NS_FAILED(rv)) {
|
||
if (rv == NS_ERROR_MALFORMED_URI) {
|
||
// import url is bad
|
||
REPORT_UNEXPECTED_P(PEImportBadURI, aURLSpec);
|
||
OUTPUT_ERROR();
|
||
}
|
||
return;
|
||
}
|
||
|
||
if (mChildLoader) {
|
||
mChildLoader->LoadChildSheet(mSheet, url, aMedia, rule);
|
||
}
|
||
}
|
||
|
||
// Parse the {} part of an @media or @-moz-document rule.
|
||
bool
|
||
CSSParserImpl::ParseGroupRule(css::GroupRule* aRule,
|
||
RuleAppendFunc aAppendFunc,
|
||
void* aData)
|
||
{
|
||
// XXXbz this could use better error reporting throughout the method
|
||
if (!ExpectSymbol('{', true)) {
|
||
return false;
|
||
}
|
||
|
||
// push rule on stack, loop over children
|
||
PushGroup(aRule);
|
||
nsCSSSection holdSection = mSection;
|
||
mSection = eCSSSection_General;
|
||
|
||
for (;;) {
|
||
// Get next non-whitespace token
|
||
if (! GetToken(true)) {
|
||
REPORT_UNEXPECTED_EOF(PEGroupRuleEOF2);
|
||
break;
|
||
}
|
||
if (mToken.IsSymbol('}')) { // done!
|
||
UngetToken();
|
||
break;
|
||
}
|
||
if (eCSSToken_AtKeyword == mToken.mType) {
|
||
// Parse for nested rules
|
||
ParseAtRule(aAppendFunc, aData, true);
|
||
continue;
|
||
}
|
||
UngetToken();
|
||
ParseRuleSet(AppendRuleToSheet, this, true);
|
||
}
|
||
PopGroup();
|
||
|
||
if (!ExpectSymbol('}', true)) {
|
||
mSection = holdSection;
|
||
return false;
|
||
}
|
||
(*aAppendFunc)(aRule, aData);
|
||
return true;
|
||
}
|
||
|
||
// Parse a CSS2 media rule: "@media medium [, medium] { ... }"
|
||
bool
|
||
CSSParserImpl::ParseMediaRule(RuleAppendFunc aAppendFunc, void* aData)
|
||
{
|
||
nsRefPtr<nsMediaList> media = new nsMediaList();
|
||
|
||
if (GatherMedia(media, true)) {
|
||
// XXXbz this could use better error reporting throughout the method
|
||
nsRefPtr<css::MediaRule> rule = new css::MediaRule();
|
||
// Append first, so when we do SetMedia() the rule
|
||
// knows what its stylesheet is.
|
||
if (ParseGroupRule(rule, aAppendFunc, aData)) {
|
||
rule->SetMedia(media);
|
||
return true;
|
||
}
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
// Parse a @-moz-document rule. This is like an @media rule, but instead
|
||
// of a medium it has a nonempty list of items where each item is either
|
||
// url(), url-prefix(), or domain().
|
||
bool
|
||
CSSParserImpl::ParseMozDocumentRule(RuleAppendFunc aAppendFunc, void* aData)
|
||
{
|
||
css::DocumentRule::URL *urls = nullptr;
|
||
css::DocumentRule::URL **next = &urls;
|
||
do {
|
||
if (!GetToken(true)) {
|
||
REPORT_UNEXPECTED_EOF(PEMozDocRuleEOF);
|
||
delete urls;
|
||
return false;
|
||
}
|
||
|
||
if (!(eCSSToken_URL == mToken.mType ||
|
||
(eCSSToken_Function == mToken.mType &&
|
||
(mToken.mIdent.LowerCaseEqualsLiteral("url-prefix") ||
|
||
mToken.mIdent.LowerCaseEqualsLiteral("domain") ||
|
||
mToken.mIdent.LowerCaseEqualsLiteral("regexp"))))) {
|
||
REPORT_UNEXPECTED_TOKEN(PEMozDocRuleBadFunc2);
|
||
UngetToken();
|
||
delete urls;
|
||
return false;
|
||
}
|
||
css::DocumentRule::URL *cur = *next = new css::DocumentRule::URL;
|
||
next = &cur->next;
|
||
if (mToken.mType == eCSSToken_URL) {
|
||
cur->func = css::DocumentRule::eURL;
|
||
CopyUTF16toUTF8(mToken.mIdent, cur->url);
|
||
} else if (mToken.mIdent.LowerCaseEqualsLiteral("regexp")) {
|
||
// regexp() is different from url-prefix() and domain() (but
|
||
// probably the way they *should* have been* in that it requires a
|
||
// string argument, and doesn't try to behave like url().
|
||
cur->func = css::DocumentRule::eRegExp;
|
||
GetToken(true);
|
||
// copy before we know it's valid (but before ExpectSymbol changes
|
||
// mToken.mIdent)
|
||
CopyUTF16toUTF8(mToken.mIdent, cur->url);
|
||
if (eCSSToken_String != mToken.mType || !ExpectSymbol(')', true)) {
|
||
REPORT_UNEXPECTED_TOKEN(PEMozDocRuleNotString);
|
||
SkipUntil(')');
|
||
delete urls;
|
||
return false;
|
||
}
|
||
} else {
|
||
if (mToken.mIdent.LowerCaseEqualsLiteral("url-prefix")) {
|
||
cur->func = css::DocumentRule::eURLPrefix;
|
||
} else if (mToken.mIdent.LowerCaseEqualsLiteral("domain")) {
|
||
cur->func = css::DocumentRule::eDomain;
|
||
}
|
||
|
||
NS_ASSERTION(!mHavePushBack, "mustn't have pushback at this point");
|
||
if (!mScanner->NextURL(mToken) || mToken.mType != eCSSToken_URL) {
|
||
REPORT_UNEXPECTED_TOKEN(PEMozDocRuleNotURI);
|
||
SkipUntil(')');
|
||
delete urls;
|
||
return false;
|
||
}
|
||
|
||
// We could try to make the URL (as long as it's not domain())
|
||
// canonical and absolute with NS_NewURI and GetSpec, but I'm
|
||
// inclined to think we shouldn't.
|
||
CopyUTF16toUTF8(mToken.mIdent, cur->url);
|
||
}
|
||
} while (ExpectSymbol(',', true));
|
||
|
||
nsRefPtr<css::DocumentRule> rule = new css::DocumentRule();
|
||
rule->SetURLs(urls);
|
||
|
||
return ParseGroupRule(rule, aAppendFunc, aData);
|
||
}
|
||
|
||
// Parse a CSS3 namespace rule: "@namespace [prefix] STRING | URL;"
|
||
bool
|
||
CSSParserImpl::ParseNameSpaceRule(RuleAppendFunc aAppendFunc, void* aData)
|
||
{
|
||
if (!GetToken(true)) {
|
||
REPORT_UNEXPECTED_EOF(PEAtNSPrefixEOF);
|
||
return false;
|
||
}
|
||
|
||
nsAutoString prefix;
|
||
nsAutoString url;
|
||
|
||
if (eCSSToken_Ident == mToken.mType) {
|
||
prefix = mToken.mIdent;
|
||
// user-specified identifiers are case-sensitive (bug 416106)
|
||
} else {
|
||
UngetToken();
|
||
}
|
||
|
||
if (!ParseURLOrString(url) || !ExpectSymbol(';', true)) {
|
||
if (mHavePushBack) {
|
||
REPORT_UNEXPECTED_TOKEN(PEAtNSUnexpected);
|
||
} else {
|
||
REPORT_UNEXPECTED_EOF(PEAtNSURIEOF);
|
||
}
|
||
return false;
|
||
}
|
||
|
||
ProcessNameSpace(prefix, url, aAppendFunc, aData);
|
||
return true;
|
||
}
|
||
|
||
void
|
||
CSSParserImpl::ProcessNameSpace(const nsString& aPrefix,
|
||
const nsString& aURLSpec,
|
||
RuleAppendFunc aAppendFunc,
|
||
void* aData)
|
||
{
|
||
nsCOMPtr<nsIAtom> prefix;
|
||
|
||
if (!aPrefix.IsEmpty()) {
|
||
prefix = do_GetAtom(aPrefix);
|
||
if (!prefix) {
|
||
NS_RUNTIMEABORT("do_GetAtom failed - out of memory?");
|
||
}
|
||
}
|
||
|
||
nsRefPtr<css::NameSpaceRule> rule = new css::NameSpaceRule(prefix, aURLSpec);
|
||
(*aAppendFunc)(rule, aData);
|
||
|
||
// If this was the first namespace rule encountered, it will trigger
|
||
// creation of a namespace map.
|
||
if (!mNameSpaceMap) {
|
||
mNameSpaceMap = mSheet->GetNameSpaceMap();
|
||
}
|
||
}
|
||
|
||
// font-face-rule: '@font-face' '{' font-description '}'
|
||
// font-description: font-descriptor+
|
||
bool
|
||
CSSParserImpl::ParseFontFaceRule(RuleAppendFunc aAppendFunc, void* aData)
|
||
{
|
||
if (!ExpectSymbol('{', true)) {
|
||
REPORT_UNEXPECTED_TOKEN(PEBadFontBlockStart);
|
||
return false;
|
||
}
|
||
|
||
nsRefPtr<nsCSSFontFaceRule> rule(new nsCSSFontFaceRule());
|
||
|
||
for (;;) {
|
||
if (!GetToken(true)) {
|
||
REPORT_UNEXPECTED_EOF(PEFontFaceEOF);
|
||
break;
|
||
}
|
||
if (mToken.IsSymbol('}')) { // done!
|
||
UngetToken();
|
||
break;
|
||
}
|
||
|
||
// ignore extra semicolons
|
||
if (mToken.IsSymbol(';'))
|
||
continue;
|
||
|
||
if (!ParseFontDescriptor(rule)) {
|
||
REPORT_UNEXPECTED(PEDeclSkipped);
|
||
OUTPUT_ERROR();
|
||
if (!SkipDeclaration(true))
|
||
break;
|
||
}
|
||
}
|
||
if (!ExpectSymbol('}', true)) {
|
||
REPORT_UNEXPECTED_TOKEN(PEBadFontBlockEnd);
|
||
return false;
|
||
}
|
||
(*aAppendFunc)(rule, aData);
|
||
return true;
|
||
}
|
||
|
||
// font-descriptor: font-family-desc
|
||
// | font-style-desc
|
||
// | font-weight-desc
|
||
// | font-stretch-desc
|
||
// | font-src-desc
|
||
// | unicode-range-desc
|
||
//
|
||
// All font-*-desc productions follow the pattern
|
||
// IDENT ':' value ';'
|
||
//
|
||
// On entry to this function, mToken is the IDENT.
|
||
|
||
bool
|
||
CSSParserImpl::ParseFontDescriptor(nsCSSFontFaceRule* aRule)
|
||
{
|
||
if (eCSSToken_Ident != mToken.mType) {
|
||
REPORT_UNEXPECTED_TOKEN(PEFontDescExpected);
|
||
return false;
|
||
}
|
||
|
||
nsString descName = mToken.mIdent;
|
||
if (!ExpectSymbol(':', true)) {
|
||
REPORT_UNEXPECTED_TOKEN(PEParseDeclarationNoColon);
|
||
OUTPUT_ERROR();
|
||
return false;
|
||
}
|
||
|
||
nsCSSFontDesc descID = nsCSSProps::LookupFontDesc(descName);
|
||
nsCSSValue value;
|
||
|
||
if (descID == eCSSFontDesc_UNKNOWN) {
|
||
if (NonMozillaVendorIdentifier(descName)) {
|
||
// silently skip other vendors' extensions
|
||
SkipDeclaration(true);
|
||
return true;
|
||
} else {
|
||
REPORT_UNEXPECTED_P(PEUnknownFontDesc, descName);
|
||
return false;
|
||
}
|
||
}
|
||
|
||
if (!ParseFontDescriptorValue(descID, value)) {
|
||
REPORT_UNEXPECTED_P(PEValueParsingError, descName);
|
||
return false;
|
||
}
|
||
|
||
if (!ExpectEndProperty())
|
||
return false;
|
||
|
||
aRule->SetDesc(descID, value);
|
||
return true;
|
||
}
|
||
|
||
// @font-feature-values <font-family># {
|
||
// @<feature-type> {
|
||
// <feature-ident> : <feature-index>+;
|
||
// <feature-ident> : <feature-index>+;
|
||
// ...
|
||
// }
|
||
// ...
|
||
// }
|
||
|
||
bool
|
||
CSSParserImpl::ParseFontFeatureValuesRule(RuleAppendFunc aAppendFunc,
|
||
void* aData)
|
||
{
|
||
nsRefPtr<nsCSSFontFeatureValuesRule>
|
||
valuesRule(new nsCSSFontFeatureValuesRule());
|
||
|
||
// parse family list
|
||
nsCSSValue familyValue;
|
||
|
||
if (!ParseFamily(familyValue) ||
|
||
familyValue.GetUnit() != eCSSUnit_Families)
|
||
{
|
||
REPORT_UNEXPECTED_TOKEN(PEFFVNoFamily);
|
||
return false;
|
||
}
|
||
|
||
// add family to rule
|
||
nsAutoString familyList;
|
||
bool hasGeneric;
|
||
familyValue.GetStringValue(familyList);
|
||
valuesRule->SetFamilyList(familyList, hasGeneric);
|
||
|
||
// family list has generic ==> parse error
|
||
if (hasGeneric) {
|
||
REPORT_UNEXPECTED_TOKEN(PEFFVGenericInFamilyList);
|
||
return false;
|
||
}
|
||
|
||
// open brace
|
||
if (!ExpectSymbol('{', true)) {
|
||
REPORT_UNEXPECTED_TOKEN(PEFFVBlockStart);
|
||
return false;
|
||
}
|
||
|
||
// list of sets of feature values, each set bound to a specific
|
||
// feature-type (e.g. swash, annotation)
|
||
for (;;) {
|
||
if (!GetToken(true)) {
|
||
REPORT_UNEXPECTED_EOF(PEFFVUnexpectedEOF);
|
||
break;
|
||
}
|
||
if (mToken.IsSymbol('}')) { // done!
|
||
UngetToken();
|
||
break;
|
||
}
|
||
|
||
if (!ParseFontFeatureValueSet(valuesRule)) {
|
||
if (!SkipAtRule(false)) {
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
if (!ExpectSymbol('}', true)) {
|
||
REPORT_UNEXPECTED_TOKEN(PEFFVUnexpectedBlockEnd);
|
||
SkipUntil('}');
|
||
return false;
|
||
}
|
||
|
||
(*aAppendFunc)(valuesRule, aData);
|
||
return true;
|
||
}
|
||
|
||
#define NUMVALUES_NO_LIMIT 0xFFFF
|
||
|
||
// parse a single value set containing name-value pairs for a single feature type
|
||
// @<feature-type> { [ <feature-ident> : <feature-index>+ ; ]* }
|
||
// Ex: @swash { flowing: 1; delicate: 2; }
|
||
bool
|
||
CSSParserImpl::ParseFontFeatureValueSet(nsCSSFontFeatureValuesRule
|
||
*aFeatureValuesRule)
|
||
{
|
||
// -- @keyword (e.g. swash, styleset)
|
||
if (eCSSToken_AtKeyword != mToken.mType) {
|
||
REPORT_UNEXPECTED_TOKEN(PEFontFeatureValuesNoAt);
|
||
OUTPUT_ERROR();
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
|
||
// which font-specific variant of font-variant-alternates
|
||
int32_t whichVariant;
|
||
nsCSSKeyword keyword = nsCSSKeywords::LookupKeyword(mToken.mIdent);
|
||
if (keyword == eCSSKeyword_UNKNOWN ||
|
||
!nsCSSProps::FindKeyword(keyword,
|
||
nsCSSProps::kFontVariantAlternatesFuncsKTable,
|
||
whichVariant))
|
||
{
|
||
if (!NonMozillaVendorIdentifier(mToken.mIdent)) {
|
||
REPORT_UNEXPECTED_TOKEN(PEFFVUnknownFontVariantPropValue);
|
||
OUTPUT_ERROR();
|
||
}
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
|
||
nsAutoString featureType(mToken.mIdent);
|
||
|
||
// open brace
|
||
if (!ExpectSymbol('{', true)) {
|
||
REPORT_UNEXPECTED_TOKEN(PEFFVValueSetStart);
|
||
return false;
|
||
}
|
||
|
||
// styleset and character-variant can be multi-valued, otherwise single value
|
||
int32_t limitNumValues;
|
||
|
||
switch (keyword) {
|
||
case eCSSKeyword_styleset:
|
||
limitNumValues = NUMVALUES_NO_LIMIT;
|
||
break;
|
||
case eCSSKeyword_character_variant:
|
||
limitNumValues = 2;
|
||
break;
|
||
default:
|
||
limitNumValues = 1;
|
||
break;
|
||
}
|
||
|
||
// -- ident integer+ [, ident integer+]
|
||
nsAutoTArray<gfxFontFeatureValueSet::ValueList, 5> values;
|
||
|
||
// list of font-feature-values-declaration's
|
||
for (;;) {
|
||
nsAutoString valueId;
|
||
|
||
if (!GetToken(true)) {
|
||
REPORT_UNEXPECTED_EOF(PEFFVUnexpectedEOF);
|
||
break;
|
||
}
|
||
|
||
// ignore extra semicolons
|
||
if (mToken.IsSymbol(';')) {
|
||
continue;
|
||
}
|
||
|
||
// close brace ==> done
|
||
if (mToken.IsSymbol('}')) {
|
||
break;
|
||
}
|
||
|
||
// ident
|
||
if (eCSSToken_Ident != mToken.mType) {
|
||
REPORT_UNEXPECTED_TOKEN(PEFFVExpectedIdent);
|
||
if (!SkipDeclaration(true)) {
|
||
break;
|
||
}
|
||
continue;
|
||
}
|
||
|
||
valueId.Assign(mToken.mIdent);
|
||
|
||
// colon
|
||
if (!ExpectSymbol(':', true)) {
|
||
REPORT_UNEXPECTED_TOKEN(PEParseDeclarationNoColon);
|
||
OUTPUT_ERROR();
|
||
if (!SkipDeclaration(true)) {
|
||
break;
|
||
}
|
||
continue;
|
||
}
|
||
|
||
// value list
|
||
nsAutoTArray<uint32_t,4> featureSelectors;
|
||
|
||
nsCSSValue intValue;
|
||
while (ParseNonNegativeVariant(intValue, VARIANT_INTEGER, nullptr)) {
|
||
featureSelectors.AppendElement(uint32_t(intValue.GetIntValue()));
|
||
}
|
||
|
||
int32_t numValues = featureSelectors.Length();
|
||
|
||
if (numValues == 0) {
|
||
REPORT_UNEXPECTED_TOKEN(PEFFVExpectedValue);
|
||
OUTPUT_ERROR();
|
||
if (!SkipDeclaration(true)) {
|
||
break;
|
||
}
|
||
continue;
|
||
}
|
||
|
||
if (numValues > limitNumValues) {
|
||
REPORT_UNEXPECTED_P(PEFFVTooManyValues, featureType);
|
||
OUTPUT_ERROR();
|
||
if (!SkipDeclaration(true)) {
|
||
break;
|
||
}
|
||
continue;
|
||
}
|
||
|
||
if (!GetToken(true)) {
|
||
REPORT_UNEXPECTED_EOF(PEFFVUnexpectedEOF);
|
||
gfxFontFeatureValueSet::ValueList v(valueId, featureSelectors);
|
||
values.AppendElement(v);
|
||
break;
|
||
}
|
||
|
||
// ';' or '}' to end definition
|
||
if (!mToken.IsSymbol(';') && !mToken.IsSymbol('}')) {
|
||
REPORT_UNEXPECTED_TOKEN(PEFFVValueDefinitionTrailing);
|
||
OUTPUT_ERROR();
|
||
if (!SkipDeclaration(true)) {
|
||
break;
|
||
}
|
||
continue;
|
||
}
|
||
|
||
gfxFontFeatureValueSet::ValueList v(valueId, featureSelectors);
|
||
values.AppendElement(v);
|
||
|
||
if (mToken.IsSymbol('}')) {
|
||
break;
|
||
}
|
||
}
|
||
|
||
aFeatureValuesRule->AddValueList(whichVariant, values);
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseKeyframesRule(RuleAppendFunc aAppendFunc, void* aData)
|
||
{
|
||
if (!GetToken(true)) {
|
||
REPORT_UNEXPECTED_EOF(PEKeyframeNameEOF);
|
||
return false;
|
||
}
|
||
|
||
if (mToken.mType != eCSSToken_Ident) {
|
||
REPORT_UNEXPECTED_TOKEN(PEKeyframeBadName);
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
nsString name(mToken.mIdent);
|
||
|
||
if (!ExpectSymbol('{', true)) {
|
||
REPORT_UNEXPECTED_TOKEN(PEKeyframeBrace);
|
||
return false;
|
||
}
|
||
|
||
nsRefPtr<nsCSSKeyframesRule> rule = new nsCSSKeyframesRule(name);
|
||
|
||
while (!ExpectSymbol('}', true)) {
|
||
nsRefPtr<nsCSSKeyframeRule> kid = ParseKeyframeRule();
|
||
if (kid) {
|
||
rule->AppendStyleRule(kid);
|
||
} else {
|
||
OUTPUT_ERROR();
|
||
SkipRuleSet(true);
|
||
}
|
||
}
|
||
|
||
(*aAppendFunc)(rule, aData);
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParsePageRule(RuleAppendFunc aAppendFunc, void* aData)
|
||
{
|
||
// TODO: There can be page selectors after @page such as ":first", ":left".
|
||
uint32_t parseFlags = eParseDeclaration_InBraces |
|
||
eParseDeclaration_AllowImportant;
|
||
|
||
// Forbid viewport units in @page rules. See bug 811391.
|
||
NS_ABORT_IF_FALSE(mViewportUnitsEnabled,
|
||
"Viewport units should be enabled outside of @page rules.");
|
||
mViewportUnitsEnabled = false;
|
||
nsAutoPtr<css::Declaration> declaration(
|
||
ParseDeclarationBlock(parseFlags,
|
||
eCSSContext_Page));
|
||
mViewportUnitsEnabled = true;
|
||
|
||
if (!declaration) {
|
||
return false;
|
||
}
|
||
|
||
// Takes ownership of declaration.
|
||
nsRefPtr<nsCSSPageRule> rule = new nsCSSPageRule(declaration);
|
||
|
||
(*aAppendFunc)(rule, aData);
|
||
return true;
|
||
}
|
||
|
||
already_AddRefed<nsCSSKeyframeRule>
|
||
CSSParserImpl::ParseKeyframeRule()
|
||
{
|
||
InfallibleTArray<float> selectorList;
|
||
if (!ParseKeyframeSelectorList(selectorList)) {
|
||
REPORT_UNEXPECTED(PEBadSelectorKeyframeRuleIgnored);
|
||
return nullptr;
|
||
}
|
||
|
||
// Ignore !important in keyframe rules
|
||
uint32_t parseFlags = eParseDeclaration_InBraces;
|
||
nsAutoPtr<css::Declaration> declaration(ParseDeclarationBlock(parseFlags));
|
||
if (!declaration) {
|
||
return nullptr;
|
||
}
|
||
|
||
// Takes ownership of declaration, and steals contents of selectorList.
|
||
nsRefPtr<nsCSSKeyframeRule> rule =
|
||
new nsCSSKeyframeRule(selectorList, declaration);
|
||
|
||
return rule.forget();
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseKeyframeSelectorList(InfallibleTArray<float>& aSelectorList)
|
||
{
|
||
for (;;) {
|
||
if (!GetToken(true)) {
|
||
// The first time through the loop, this means we got an empty
|
||
// list. Otherwise, it means we have a trailing comma.
|
||
return false;
|
||
}
|
||
float value;
|
||
switch (mToken.mType) {
|
||
case eCSSToken_Percentage:
|
||
value = mToken.mNumber;
|
||
break;
|
||
case eCSSToken_Ident:
|
||
if (mToken.mIdent.LowerCaseEqualsLiteral("from")) {
|
||
value = 0.0f;
|
||
break;
|
||
}
|
||
if (mToken.mIdent.LowerCaseEqualsLiteral("to")) {
|
||
value = 1.0f;
|
||
break;
|
||
}
|
||
// fall through
|
||
default:
|
||
UngetToken();
|
||
// The first time through the loop, this means we got an empty
|
||
// list. Otherwise, it means we have a trailing comma.
|
||
return false;
|
||
}
|
||
aSelectorList.AppendElement(value);
|
||
if (!ExpectSymbol(',', true)) {
|
||
return true;
|
||
}
|
||
}
|
||
}
|
||
|
||
// supports_rule
|
||
// : "@supports" supports_condition group_rule_body
|
||
// ;
|
||
bool
|
||
CSSParserImpl::ParseSupportsRule(RuleAppendFunc aAppendFunc, void* aProcessData)
|
||
{
|
||
bool conditionMet = false;
|
||
nsString condition;
|
||
|
||
mScanner->StartRecording();
|
||
bool parsed = ParseSupportsCondition(conditionMet);
|
||
|
||
if (!parsed) {
|
||
mScanner->StopRecording();
|
||
return false;
|
||
}
|
||
|
||
if (!ExpectSymbol('{', true)) {
|
||
REPORT_UNEXPECTED_TOKEN(PESupportsGroupRuleStart);
|
||
mScanner->StopRecording();
|
||
return false;
|
||
}
|
||
|
||
UngetToken();
|
||
mScanner->StopRecording(condition);
|
||
|
||
// Remove the "{" that would follow the condition.
|
||
if (condition.Length() != 0) {
|
||
condition.Truncate(condition.Length() - 1);
|
||
}
|
||
|
||
// Remove spaces from the start and end of the recorded supports condition.
|
||
condition.Trim(" ", true, true, false);
|
||
|
||
// Record whether we are in a failing @supports, so that property parse
|
||
// errors don't get reported.
|
||
nsAutoFailingSupportsRule failing(this, conditionMet);
|
||
|
||
nsRefPtr<css::GroupRule> rule = new CSSSupportsRule(conditionMet, condition);
|
||
return ParseGroupRule(rule, aAppendFunc, aProcessData);
|
||
}
|
||
|
||
// supports_condition
|
||
// : supports_condition_in_parens supports_condition_terms
|
||
// | supports_condition_negation
|
||
// ;
|
||
bool
|
||
CSSParserImpl::ParseSupportsCondition(bool& aConditionMet)
|
||
{
|
||
mInSupportsCondition = true;
|
||
|
||
if (!GetToken(true)) {
|
||
REPORT_UNEXPECTED_EOF(PESupportsConditionStartEOF2);
|
||
return false;
|
||
}
|
||
|
||
UngetToken();
|
||
|
||
mScanner->ClearSeenBadToken();
|
||
|
||
if (mToken.IsSymbol('(') ||
|
||
mToken.mType == eCSSToken_Function ||
|
||
mToken.mType == eCSSToken_URL ||
|
||
mToken.mType == eCSSToken_Bad_URL) {
|
||
bool result = ParseSupportsConditionInParens(aConditionMet) &&
|
||
ParseSupportsConditionTerms(aConditionMet) &&
|
||
!mScanner->SeenBadToken();
|
||
mInSupportsCondition = false;
|
||
return result;
|
||
}
|
||
|
||
if (mToken.mType == eCSSToken_Ident &&
|
||
mToken.mIdent.LowerCaseEqualsLiteral("not")) {
|
||
bool result = ParseSupportsConditionNegation(aConditionMet) &&
|
||
!mScanner->SeenBadToken();
|
||
mInSupportsCondition = false;
|
||
return result;
|
||
}
|
||
|
||
REPORT_UNEXPECTED_TOKEN(PESupportsConditionExpectedStart);
|
||
mInSupportsCondition = false;
|
||
return false;
|
||
}
|
||
|
||
// supports_condition_negation
|
||
// : 'not' S+ supports_condition_in_parens
|
||
// ;
|
||
bool
|
||
CSSParserImpl::ParseSupportsConditionNegation(bool& aConditionMet)
|
||
{
|
||
if (!GetToken(true)) {
|
||
REPORT_UNEXPECTED_EOF(PESupportsConditionNotEOF);
|
||
return false;
|
||
}
|
||
|
||
if (mToken.mType != eCSSToken_Ident ||
|
||
!mToken.mIdent.LowerCaseEqualsLiteral("not")) {
|
||
REPORT_UNEXPECTED_TOKEN(PESupportsConditionExpectedNot);
|
||
return false;
|
||
}
|
||
|
||
if (!RequireWhitespace()) {
|
||
REPORT_UNEXPECTED(PESupportsWhitespaceRequired);
|
||
return false;
|
||
}
|
||
|
||
if (ParseSupportsConditionInParens(aConditionMet)) {
|
||
aConditionMet = !aConditionMet;
|
||
return true;
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
// supports_condition_in_parens
|
||
// : '(' S* supports_condition_in_parens_inside_parens ')' S*
|
||
// | general_enclosed
|
||
// ;
|
||
bool
|
||
CSSParserImpl::ParseSupportsConditionInParens(bool& aConditionMet)
|
||
{
|
||
if (!GetToken(true)) {
|
||
REPORT_UNEXPECTED_EOF(PESupportsConditionInParensStartEOF);
|
||
return false;
|
||
}
|
||
|
||
if (mToken.mType == eCSSToken_URL) {
|
||
aConditionMet = false;
|
||
return true;
|
||
}
|
||
|
||
if (mToken.mType == eCSSToken_Function ||
|
||
mToken.mType == eCSSToken_Bad_URL) {
|
||
if (!SkipUntil(')')) {
|
||
REPORT_UNEXPECTED_EOF(PESupportsConditionInParensEOF);
|
||
return false;
|
||
}
|
||
aConditionMet = false;
|
||
return true;
|
||
}
|
||
|
||
if (!mToken.IsSymbol('(')) {
|
||
REPORT_UNEXPECTED_TOKEN(PESupportsConditionExpectedOpenParenOrFunction);
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
|
||
if (!ParseSupportsConditionInParensInsideParens(aConditionMet)) {
|
||
if (!SkipUntil(')')) {
|
||
REPORT_UNEXPECTED_EOF(PESupportsConditionInParensEOF);
|
||
return false;
|
||
}
|
||
aConditionMet = false;
|
||
return true;
|
||
}
|
||
|
||
if (!(ExpectSymbol(')', true))) {
|
||
SkipUntil(')');
|
||
aConditionMet = false;
|
||
return true;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
// supports_condition_in_parens_inside_parens
|
||
// : core_declaration
|
||
// | supports_condition_negation
|
||
// | supports_condition_in_parens supports_condition_terms
|
||
// ;
|
||
bool
|
||
CSSParserImpl::ParseSupportsConditionInParensInsideParens(bool& aConditionMet)
|
||
{
|
||
if (!GetToken(true)) {
|
||
return false;
|
||
}
|
||
|
||
if (mToken.mType == eCSSToken_Ident) {
|
||
if (!mToken.mIdent.LowerCaseEqualsLiteral("not")) {
|
||
nsAutoString propertyName = mToken.mIdent;
|
||
if (!ExpectSymbol(':', true)) {
|
||
return false;
|
||
}
|
||
|
||
nsCSSProperty propID = nsCSSProps::LookupProperty(propertyName,
|
||
nsCSSProps::eEnabled);
|
||
if (propID == eCSSProperty_UNKNOWN) {
|
||
if (ExpectSymbol(')', true)) {
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
aConditionMet = false;
|
||
SkipUntil(')');
|
||
UngetToken();
|
||
} else if (propID == eCSSPropertyExtra_variable) {
|
||
if (ExpectSymbol(')', false)) {
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
CSSVariableDeclarations::Type variableType;
|
||
nsString variableValue;
|
||
aConditionMet =
|
||
ParseVariableDeclaration(&variableType, variableValue) &&
|
||
ParsePriority() != ePriority_Error;
|
||
if (!aConditionMet) {
|
||
SkipUntil(')');
|
||
UngetToken();
|
||
}
|
||
} else {
|
||
if (ExpectSymbol(')', true)) {
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
aConditionMet = ParseProperty(propID) &&
|
||
ParsePriority() != ePriority_Error;
|
||
if (!aConditionMet) {
|
||
SkipUntil(')');
|
||
UngetToken();
|
||
}
|
||
mTempData.ClearProperty(propID);
|
||
mTempData.AssertInitialState();
|
||
}
|
||
return true;
|
||
}
|
||
|
||
UngetToken();
|
||
return ParseSupportsConditionNegation(aConditionMet);
|
||
}
|
||
|
||
UngetToken();
|
||
return ParseSupportsConditionInParens(aConditionMet) &&
|
||
ParseSupportsConditionTerms(aConditionMet);
|
||
}
|
||
|
||
// supports_condition_terms
|
||
// : S+ 'and' supports_condition_terms_after_operator('and')
|
||
// | S+ 'or' supports_condition_terms_after_operator('or')
|
||
// |
|
||
// ;
|
||
bool
|
||
CSSParserImpl::ParseSupportsConditionTerms(bool& aConditionMet)
|
||
{
|
||
if (!RequireWhitespace() || !GetToken(false)) {
|
||
return true;
|
||
}
|
||
|
||
if (mToken.mType != eCSSToken_Ident) {
|
||
UngetToken();
|
||
return true;
|
||
}
|
||
|
||
if (mToken.mIdent.LowerCaseEqualsLiteral("and")) {
|
||
return ParseSupportsConditionTermsAfterOperator(aConditionMet, eAnd);
|
||
}
|
||
|
||
if (mToken.mIdent.LowerCaseEqualsLiteral("or")) {
|
||
return ParseSupportsConditionTermsAfterOperator(aConditionMet, eOr);
|
||
}
|
||
|
||
UngetToken();
|
||
return true;
|
||
}
|
||
|
||
// supports_condition_terms_after_operator(operator)
|
||
// : S+ supports_condition_in_parens ( <operator> supports_condition_in_parens )*
|
||
// ;
|
||
bool
|
||
CSSParserImpl::ParseSupportsConditionTermsAfterOperator(
|
||
bool& aConditionMet,
|
||
CSSParserImpl::SupportsConditionTermOperator aOperator)
|
||
{
|
||
if (!RequireWhitespace()) {
|
||
REPORT_UNEXPECTED(PESupportsWhitespaceRequired);
|
||
return false;
|
||
}
|
||
|
||
const char* token = aOperator == eAnd ? "and" : "or";
|
||
for (;;) {
|
||
bool termConditionMet = false;
|
||
if (!ParseSupportsConditionInParens(termConditionMet)) {
|
||
return false;
|
||
}
|
||
aConditionMet = aOperator == eAnd ? aConditionMet && termConditionMet :
|
||
aConditionMet || termConditionMet;
|
||
|
||
if (!GetToken(true)) {
|
||
return true;
|
||
}
|
||
|
||
if (mToken.mType != eCSSToken_Ident ||
|
||
!mToken.mIdent.LowerCaseEqualsASCII(token)) {
|
||
UngetToken();
|
||
return true;
|
||
}
|
||
}
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::SkipUntil(char16_t aStopSymbol)
|
||
{
|
||
nsCSSToken* tk = &mToken;
|
||
nsAutoTArray<char16_t, 16> stack;
|
||
stack.AppendElement(aStopSymbol);
|
||
for (;;) {
|
||
if (!GetToken(true)) {
|
||
return false;
|
||
}
|
||
if (eCSSToken_Symbol == tk->mType) {
|
||
char16_t symbol = tk->mSymbol;
|
||
uint32_t stackTopIndex = stack.Length() - 1;
|
||
if (symbol == stack.ElementAt(stackTopIndex)) {
|
||
stack.RemoveElementAt(stackTopIndex);
|
||
if (stackTopIndex == 0) {
|
||
return true;
|
||
}
|
||
|
||
// Just handle out-of-memory by parsing incorrectly. It's
|
||
// highly unlikely we're dealing with a legitimate style sheet
|
||
// anyway.
|
||
} else if ('{' == symbol) {
|
||
stack.AppendElement('}');
|
||
} else if ('[' == symbol) {
|
||
stack.AppendElement(']');
|
||
} else if ('(' == symbol) {
|
||
stack.AppendElement(')');
|
||
}
|
||
} else if (eCSSToken_Function == tk->mType ||
|
||
eCSSToken_Bad_URL == tk->mType) {
|
||
stack.AppendElement(')');
|
||
}
|
||
}
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::SkipBalancedContentUntil(char16_t aStopSymbol)
|
||
{
|
||
nsCSSToken* tk = &mToken;
|
||
nsAutoTArray<char16_t, 16> stack;
|
||
stack.AppendElement(aStopSymbol);
|
||
for (;;) {
|
||
if (!GetToken(true)) {
|
||
return true;
|
||
}
|
||
if (eCSSToken_Symbol == tk->mType) {
|
||
char16_t symbol = tk->mSymbol;
|
||
uint32_t stackTopIndex = stack.Length() - 1;
|
||
if (symbol == stack.ElementAt(stackTopIndex)) {
|
||
stack.RemoveElementAt(stackTopIndex);
|
||
if (stackTopIndex == 0) {
|
||
return true;
|
||
}
|
||
|
||
// Just handle out-of-memory by parsing incorrectly. It's
|
||
// highly unlikely we're dealing with a legitimate style sheet
|
||
// anyway.
|
||
} else if ('{' == symbol) {
|
||
stack.AppendElement('}');
|
||
} else if ('[' == symbol) {
|
||
stack.AppendElement(']');
|
||
} else if ('(' == symbol) {
|
||
stack.AppendElement(')');
|
||
} else if (')' == symbol ||
|
||
']' == symbol ||
|
||
'}' == symbol) {
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
} else if (eCSSToken_Function == tk->mType ||
|
||
eCSSToken_Bad_URL == tk->mType) {
|
||
stack.AppendElement(')');
|
||
}
|
||
}
|
||
}
|
||
|
||
void
|
||
CSSParserImpl::SkipUntilOneOf(const char16_t* aStopSymbolChars)
|
||
{
|
||
nsCSSToken* tk = &mToken;
|
||
nsDependentString stopSymbolChars(aStopSymbolChars);
|
||
for (;;) {
|
||
if (!GetToken(true)) {
|
||
break;
|
||
}
|
||
if (eCSSToken_Symbol == tk->mType) {
|
||
char16_t symbol = tk->mSymbol;
|
||
if (stopSymbolChars.FindChar(symbol) != -1) {
|
||
break;
|
||
} else if ('{' == symbol) {
|
||
SkipUntil('}');
|
||
} else if ('[' == symbol) {
|
||
SkipUntil(']');
|
||
} else if ('(' == symbol) {
|
||
SkipUntil(')');
|
||
}
|
||
} else if (eCSSToken_Function == tk->mType ||
|
||
eCSSToken_Bad_URL == tk->mType) {
|
||
SkipUntil(')');
|
||
}
|
||
}
|
||
}
|
||
|
||
void
|
||
CSSParserImpl::SkipUntilAllOf(const StopSymbolCharStack& aStopSymbolChars)
|
||
{
|
||
uint32_t i = aStopSymbolChars.Length();
|
||
while (i--) {
|
||
SkipUntil(aStopSymbolChars[i]);
|
||
}
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::SkipDeclaration(bool aCheckForBraces)
|
||
{
|
||
nsCSSToken* tk = &mToken;
|
||
for (;;) {
|
||
if (!GetToken(true)) {
|
||
if (aCheckForBraces) {
|
||
REPORT_UNEXPECTED_EOF(PESkipDeclBraceEOF);
|
||
}
|
||
return false;
|
||
}
|
||
if (eCSSToken_Symbol == tk->mType) {
|
||
char16_t symbol = tk->mSymbol;
|
||
if (';' == symbol) {
|
||
break;
|
||
}
|
||
if (aCheckForBraces) {
|
||
if ('}' == symbol) {
|
||
UngetToken();
|
||
break;
|
||
}
|
||
}
|
||
if ('{' == symbol) {
|
||
SkipUntil('}');
|
||
} else if ('(' == symbol) {
|
||
SkipUntil(')');
|
||
} else if ('[' == symbol) {
|
||
SkipUntil(']');
|
||
}
|
||
} else if (eCSSToken_Function == tk->mType ||
|
||
eCSSToken_Bad_URL == tk->mType) {
|
||
SkipUntil(')');
|
||
}
|
||
}
|
||
return true;
|
||
}
|
||
|
||
void
|
||
CSSParserImpl::SkipRuleSet(bool aInsideBraces)
|
||
{
|
||
nsCSSToken* tk = &mToken;
|
||
for (;;) {
|
||
if (!GetToken(true)) {
|
||
REPORT_UNEXPECTED_EOF(PESkipRSBraceEOF);
|
||
break;
|
||
}
|
||
if (eCSSToken_Symbol == tk->mType) {
|
||
char16_t symbol = tk->mSymbol;
|
||
if ('}' == symbol && aInsideBraces) {
|
||
// leave block closer for higher-level grammar to consume
|
||
UngetToken();
|
||
break;
|
||
} else if ('{' == symbol) {
|
||
SkipUntil('}');
|
||
break;
|
||
} else if ('(' == symbol) {
|
||
SkipUntil(')');
|
||
} else if ('[' == symbol) {
|
||
SkipUntil(']');
|
||
}
|
||
} else if (eCSSToken_Function == tk->mType ||
|
||
eCSSToken_Bad_URL == tk->mType) {
|
||
SkipUntil(')');
|
||
}
|
||
}
|
||
}
|
||
|
||
void
|
||
CSSParserImpl::PushGroup(css::GroupRule* aRule)
|
||
{
|
||
mGroupStack.AppendElement(aRule);
|
||
}
|
||
|
||
void
|
||
CSSParserImpl::PopGroup()
|
||
{
|
||
uint32_t count = mGroupStack.Length();
|
||
if (0 < count) {
|
||
mGroupStack.RemoveElementAt(count - 1);
|
||
}
|
||
}
|
||
|
||
void
|
||
CSSParserImpl::AppendRule(css::Rule* aRule)
|
||
{
|
||
uint32_t count = mGroupStack.Length();
|
||
if (0 < count) {
|
||
mGroupStack[count - 1]->AppendStyleRule(aRule);
|
||
}
|
||
else {
|
||
mSheet->AppendStyleRule(aRule);
|
||
}
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseRuleSet(RuleAppendFunc aAppendFunc, void* aData,
|
||
bool aInsideBraces)
|
||
{
|
||
// First get the list of selectors for the rule
|
||
nsCSSSelectorList* slist = nullptr;
|
||
uint32_t linenum, colnum;
|
||
if (!GetNextTokenLocation(true, &linenum, &colnum) ||
|
||
!ParseSelectorList(slist, char16_t('{'))) {
|
||
REPORT_UNEXPECTED(PEBadSelectorRSIgnored);
|
||
OUTPUT_ERROR();
|
||
SkipRuleSet(aInsideBraces);
|
||
return false;
|
||
}
|
||
NS_ASSERTION(nullptr != slist, "null selector list");
|
||
CLEAR_ERROR();
|
||
|
||
// Next parse the declaration block
|
||
uint32_t parseFlags = eParseDeclaration_InBraces |
|
||
eParseDeclaration_AllowImportant;
|
||
css::Declaration* declaration = ParseDeclarationBlock(parseFlags);
|
||
if (nullptr == declaration) {
|
||
delete slist;
|
||
return false;
|
||
}
|
||
|
||
#if 0
|
||
slist->Dump();
|
||
fputs("{\n", stdout);
|
||
declaration->List();
|
||
fputs("}\n", stdout);
|
||
#endif
|
||
|
||
// Translate the selector list and declaration block into style data
|
||
|
||
nsRefPtr<css::StyleRule> rule = new css::StyleRule(slist, declaration);
|
||
rule->SetLineNumberAndColumnNumber(linenum, colnum);
|
||
(*aAppendFunc)(rule, aData);
|
||
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseSelectorList(nsCSSSelectorList*& aListHead,
|
||
char16_t aStopChar)
|
||
{
|
||
nsCSSSelectorList* list = nullptr;
|
||
if (! ParseSelectorGroup(list)) {
|
||
// must have at least one selector group
|
||
aListHead = nullptr;
|
||
return false;
|
||
}
|
||
NS_ASSERTION(nullptr != list, "no selector list");
|
||
aListHead = list;
|
||
|
||
// After that there must either be a "," or a "{" (the latter if
|
||
// StopChar is nonzero)
|
||
nsCSSToken* tk = &mToken;
|
||
for (;;) {
|
||
if (! GetToken(true)) {
|
||
if (aStopChar == char16_t(0)) {
|
||
return true;
|
||
}
|
||
|
||
REPORT_UNEXPECTED_EOF(PESelectorListExtraEOF);
|
||
break;
|
||
}
|
||
|
||
if (eCSSToken_Symbol == tk->mType) {
|
||
if (',' == tk->mSymbol) {
|
||
nsCSSSelectorList* newList = nullptr;
|
||
// Another selector group must follow
|
||
if (! ParseSelectorGroup(newList)) {
|
||
break;
|
||
}
|
||
// add new list to the end of the selector list
|
||
list->mNext = newList;
|
||
list = newList;
|
||
continue;
|
||
} else if (aStopChar == tk->mSymbol && aStopChar != char16_t(0)) {
|
||
UngetToken();
|
||
return true;
|
||
}
|
||
}
|
||
REPORT_UNEXPECTED_TOKEN(PESelectorListExtra);
|
||
UngetToken();
|
||
break;
|
||
}
|
||
|
||
delete aListHead;
|
||
aListHead = nullptr;
|
||
return false;
|
||
}
|
||
|
||
static bool IsUniversalSelector(const nsCSSSelector& aSelector)
|
||
{
|
||
return bool((aSelector.mNameSpace == kNameSpaceID_Unknown) &&
|
||
(aSelector.mLowercaseTag == nullptr) &&
|
||
(aSelector.mIDList == nullptr) &&
|
||
(aSelector.mClassList == nullptr) &&
|
||
(aSelector.mAttrList == nullptr) &&
|
||
(aSelector.mNegations == nullptr) &&
|
||
(aSelector.mPseudoClassList == nullptr));
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseSelectorGroup(nsCSSSelectorList*& aList)
|
||
{
|
||
char16_t combinator = 0;
|
||
nsAutoPtr<nsCSSSelectorList> list(new nsCSSSelectorList());
|
||
|
||
for (;;) {
|
||
if (!ParseSelector(list, combinator)) {
|
||
return false;
|
||
}
|
||
|
||
// Look for a combinator.
|
||
if (!GetToken(false)) {
|
||
break; // EOF ok here
|
||
}
|
||
|
||
combinator = char16_t(0);
|
||
if (mToken.mType == eCSSToken_Whitespace) {
|
||
if (!GetToken(true)) {
|
||
break; // EOF ok here
|
||
}
|
||
combinator = char16_t(' ');
|
||
}
|
||
|
||
if (mToken.mType != eCSSToken_Symbol) {
|
||
UngetToken(); // not a combinator
|
||
} else {
|
||
char16_t symbol = mToken.mSymbol;
|
||
if (symbol == '+' || symbol == '>' || symbol == '~') {
|
||
combinator = mToken.mSymbol;
|
||
} else {
|
||
UngetToken(); // not a combinator
|
||
if (symbol == ',' || symbol == '{' || symbol == ')') {
|
||
break; // end of selector group
|
||
}
|
||
}
|
||
}
|
||
|
||
if (!combinator) {
|
||
REPORT_UNEXPECTED_TOKEN(PESelectorListExtra);
|
||
return false;
|
||
}
|
||
}
|
||
|
||
aList = list.forget();
|
||
return true;
|
||
}
|
||
|
||
#define SEL_MASK_NSPACE 0x01
|
||
#define SEL_MASK_ELEM 0x02
|
||
#define SEL_MASK_ID 0x04
|
||
#define SEL_MASK_CLASS 0x08
|
||
#define SEL_MASK_ATTRIB 0x10
|
||
#define SEL_MASK_PCLASS 0x20
|
||
#define SEL_MASK_PELEM 0x40
|
||
|
||
//
|
||
// Parses an ID selector #name
|
||
//
|
||
CSSParserImpl::nsSelectorParsingStatus
|
||
CSSParserImpl::ParseIDSelector(int32_t& aDataMask,
|
||
nsCSSSelector& aSelector)
|
||
{
|
||
NS_ASSERTION(!mToken.mIdent.IsEmpty(),
|
||
"Empty mIdent in eCSSToken_ID token?");
|
||
aDataMask |= SEL_MASK_ID;
|
||
aSelector.AddID(mToken.mIdent);
|
||
return eSelectorParsingStatus_Continue;
|
||
}
|
||
|
||
//
|
||
// Parses a class selector .name
|
||
//
|
||
CSSParserImpl::nsSelectorParsingStatus
|
||
CSSParserImpl::ParseClassSelector(int32_t& aDataMask,
|
||
nsCSSSelector& aSelector)
|
||
{
|
||
if (! GetToken(false)) { // get ident
|
||
REPORT_UNEXPECTED_EOF(PEClassSelEOF);
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
if (eCSSToken_Ident != mToken.mType) { // malformed selector
|
||
REPORT_UNEXPECTED_TOKEN(PEClassSelNotIdent);
|
||
UngetToken();
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
aDataMask |= SEL_MASK_CLASS;
|
||
|
||
aSelector.AddClass(mToken.mIdent);
|
||
|
||
return eSelectorParsingStatus_Continue;
|
||
}
|
||
|
||
//
|
||
// Parse a type element selector or a universal selector
|
||
// namespace|type or namespace|* or *|* or *
|
||
//
|
||
CSSParserImpl::nsSelectorParsingStatus
|
||
CSSParserImpl::ParseTypeOrUniversalSelector(int32_t& aDataMask,
|
||
nsCSSSelector& aSelector,
|
||
bool aIsNegated)
|
||
{
|
||
nsAutoString buffer;
|
||
if (mToken.IsSymbol('*')) { // universal element selector, or universal namespace
|
||
if (ExpectSymbol('|', false)) { // was namespace
|
||
aDataMask |= SEL_MASK_NSPACE;
|
||
aSelector.SetNameSpace(kNameSpaceID_Unknown); // namespace wildcard
|
||
|
||
if (! GetToken(false)) {
|
||
REPORT_UNEXPECTED_EOF(PETypeSelEOF);
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
if (eCSSToken_Ident == mToken.mType) { // element name
|
||
aDataMask |= SEL_MASK_ELEM;
|
||
|
||
aSelector.SetTag(mToken.mIdent);
|
||
}
|
||
else if (mToken.IsSymbol('*')) { // universal selector
|
||
aDataMask |= SEL_MASK_ELEM;
|
||
// don't set tag
|
||
}
|
||
else {
|
||
REPORT_UNEXPECTED_TOKEN(PETypeSelNotType);
|
||
UngetToken();
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
}
|
||
else { // was universal element selector
|
||
SetDefaultNamespaceOnSelector(aSelector);
|
||
aDataMask |= SEL_MASK_ELEM;
|
||
// don't set any tag in the selector
|
||
}
|
||
if (! GetToken(false)) { // premature eof is ok (here!)
|
||
return eSelectorParsingStatus_Done;
|
||
}
|
||
}
|
||
else if (eCSSToken_Ident == mToken.mType) { // element name or namespace name
|
||
buffer = mToken.mIdent; // hang on to ident
|
||
|
||
if (ExpectSymbol('|', false)) { // was namespace
|
||
aDataMask |= SEL_MASK_NSPACE;
|
||
int32_t nameSpaceID = GetNamespaceIdForPrefix(buffer);
|
||
if (nameSpaceID == kNameSpaceID_Unknown) {
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
aSelector.SetNameSpace(nameSpaceID);
|
||
|
||
if (! GetToken(false)) {
|
||
REPORT_UNEXPECTED_EOF(PETypeSelEOF);
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
if (eCSSToken_Ident == mToken.mType) { // element name
|
||
aDataMask |= SEL_MASK_ELEM;
|
||
aSelector.SetTag(mToken.mIdent);
|
||
}
|
||
else if (mToken.IsSymbol('*')) { // universal selector
|
||
aDataMask |= SEL_MASK_ELEM;
|
||
// don't set tag
|
||
}
|
||
else {
|
||
REPORT_UNEXPECTED_TOKEN(PETypeSelNotType);
|
||
UngetToken();
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
}
|
||
else { // was element name
|
||
SetDefaultNamespaceOnSelector(aSelector);
|
||
aSelector.SetTag(buffer);
|
||
|
||
aDataMask |= SEL_MASK_ELEM;
|
||
}
|
||
if (! GetToken(false)) { // premature eof is ok (here!)
|
||
return eSelectorParsingStatus_Done;
|
||
}
|
||
}
|
||
else if (mToken.IsSymbol('|')) { // No namespace
|
||
aDataMask |= SEL_MASK_NSPACE;
|
||
aSelector.SetNameSpace(kNameSpaceID_None); // explicit NO namespace
|
||
|
||
// get mandatory tag
|
||
if (! GetToken(false)) {
|
||
REPORT_UNEXPECTED_EOF(PETypeSelEOF);
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
if (eCSSToken_Ident == mToken.mType) { // element name
|
||
aDataMask |= SEL_MASK_ELEM;
|
||
aSelector.SetTag(mToken.mIdent);
|
||
}
|
||
else if (mToken.IsSymbol('*')) { // universal selector
|
||
aDataMask |= SEL_MASK_ELEM;
|
||
// don't set tag
|
||
}
|
||
else {
|
||
REPORT_UNEXPECTED_TOKEN(PETypeSelNotType);
|
||
UngetToken();
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
if (! GetToken(false)) { // premature eof is ok (here!)
|
||
return eSelectorParsingStatus_Done;
|
||
}
|
||
}
|
||
else {
|
||
SetDefaultNamespaceOnSelector(aSelector);
|
||
}
|
||
|
||
if (aIsNegated) {
|
||
// restore last token read in case of a negated type selector
|
||
UngetToken();
|
||
}
|
||
return eSelectorParsingStatus_Continue;
|
||
}
|
||
|
||
//
|
||
// Parse attribute selectors [attr], [attr=value], [attr|=value],
|
||
// [attr~=value], [attr^=value], [attr$=value] and [attr*=value]
|
||
//
|
||
CSSParserImpl::nsSelectorParsingStatus
|
||
CSSParserImpl::ParseAttributeSelector(int32_t& aDataMask,
|
||
nsCSSSelector& aSelector)
|
||
{
|
||
if (! GetToken(true)) { // premature EOF
|
||
REPORT_UNEXPECTED_EOF(PEAttributeNameEOF);
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
|
||
int32_t nameSpaceID = kNameSpaceID_None;
|
||
nsAutoString attr;
|
||
if (mToken.IsSymbol('*')) { // wildcard namespace
|
||
nameSpaceID = kNameSpaceID_Unknown;
|
||
if (ExpectSymbol('|', false)) {
|
||
if (! GetToken(false)) { // premature EOF
|
||
REPORT_UNEXPECTED_EOF(PEAttributeNameEOF);
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
if (eCSSToken_Ident == mToken.mType) { // attr name
|
||
attr = mToken.mIdent;
|
||
}
|
||
else {
|
||
REPORT_UNEXPECTED_TOKEN(PEAttributeNameExpected);
|
||
UngetToken();
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
}
|
||
else {
|
||
REPORT_UNEXPECTED_TOKEN(PEAttSelNoBar);
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
}
|
||
else if (mToken.IsSymbol('|')) { // NO namespace
|
||
if (! GetToken(false)) { // premature EOF
|
||
REPORT_UNEXPECTED_EOF(PEAttributeNameEOF);
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
if (eCSSToken_Ident == mToken.mType) { // attr name
|
||
attr = mToken.mIdent;
|
||
}
|
||
else {
|
||
REPORT_UNEXPECTED_TOKEN(PEAttributeNameExpected);
|
||
UngetToken();
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
}
|
||
else if (eCSSToken_Ident == mToken.mType) { // attr name or namespace
|
||
attr = mToken.mIdent; // hang on to it
|
||
if (ExpectSymbol('|', false)) { // was a namespace
|
||
nameSpaceID = GetNamespaceIdForPrefix(attr);
|
||
if (nameSpaceID == kNameSpaceID_Unknown) {
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
if (! GetToken(false)) { // premature EOF
|
||
REPORT_UNEXPECTED_EOF(PEAttributeNameEOF);
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
if (eCSSToken_Ident == mToken.mType) { // attr name
|
||
attr = mToken.mIdent;
|
||
}
|
||
else {
|
||
REPORT_UNEXPECTED_TOKEN(PEAttributeNameExpected);
|
||
UngetToken();
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
}
|
||
}
|
||
else { // malformed
|
||
REPORT_UNEXPECTED_TOKEN(PEAttributeNameOrNamespaceExpected);
|
||
UngetToken();
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
|
||
if (! GetToken(true)) { // premature EOF
|
||
REPORT_UNEXPECTED_EOF(PEAttSelInnerEOF);
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
if ((eCSSToken_Symbol == mToken.mType) ||
|
||
(eCSSToken_Includes == mToken.mType) ||
|
||
(eCSSToken_Dashmatch == mToken.mType) ||
|
||
(eCSSToken_Beginsmatch == mToken.mType) ||
|
||
(eCSSToken_Endsmatch == mToken.mType) ||
|
||
(eCSSToken_Containsmatch == mToken.mType)) {
|
||
uint8_t func;
|
||
if (eCSSToken_Includes == mToken.mType) {
|
||
func = NS_ATTR_FUNC_INCLUDES;
|
||
}
|
||
else if (eCSSToken_Dashmatch == mToken.mType) {
|
||
func = NS_ATTR_FUNC_DASHMATCH;
|
||
}
|
||
else if (eCSSToken_Beginsmatch == mToken.mType) {
|
||
func = NS_ATTR_FUNC_BEGINSMATCH;
|
||
}
|
||
else if (eCSSToken_Endsmatch == mToken.mType) {
|
||
func = NS_ATTR_FUNC_ENDSMATCH;
|
||
}
|
||
else if (eCSSToken_Containsmatch == mToken.mType) {
|
||
func = NS_ATTR_FUNC_CONTAINSMATCH;
|
||
}
|
||
else if (']' == mToken.mSymbol) {
|
||
aDataMask |= SEL_MASK_ATTRIB;
|
||
aSelector.AddAttribute(nameSpaceID, attr);
|
||
func = NS_ATTR_FUNC_SET;
|
||
}
|
||
else if ('=' == mToken.mSymbol) {
|
||
func = NS_ATTR_FUNC_EQUALS;
|
||
}
|
||
else {
|
||
REPORT_UNEXPECTED_TOKEN(PEAttSelUnexpected);
|
||
UngetToken(); // bad function
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
if (NS_ATTR_FUNC_SET != func) { // get value
|
||
if (! GetToken(true)) { // premature EOF
|
||
REPORT_UNEXPECTED_EOF(PEAttSelValueEOF);
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
if ((eCSSToken_Ident == mToken.mType) || (eCSSToken_String == mToken.mType)) {
|
||
nsAutoString value(mToken.mIdent);
|
||
if (! GetToken(true)) { // premature EOF
|
||
REPORT_UNEXPECTED_EOF(PEAttSelCloseEOF);
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
if (mToken.IsSymbol(']')) {
|
||
bool isCaseSensitive = true;
|
||
|
||
// For cases when this style sheet is applied to an HTML
|
||
// element in an HTML document, and the attribute selector is
|
||
// for a non-namespaced attribute, then check to see if it's
|
||
// one of the known attributes whose VALUE is
|
||
// case-insensitive.
|
||
if (nameSpaceID == kNameSpaceID_None) {
|
||
static const char* caseInsensitiveHTMLAttribute[] = {
|
||
// list based on http://www.w3.org/TR/html4/
|
||
"lang",
|
||
"dir",
|
||
"http-equiv",
|
||
"text",
|
||
"link",
|
||
"vlink",
|
||
"alink",
|
||
"compact",
|
||
"align",
|
||
"frame",
|
||
"rules",
|
||
"valign",
|
||
"scope",
|
||
"axis",
|
||
"nowrap",
|
||
"hreflang",
|
||
"rel",
|
||
"rev",
|
||
"charset",
|
||
"codetype",
|
||
"declare",
|
||
"valuetype",
|
||
"shape",
|
||
"nohref",
|
||
"media",
|
||
"bgcolor",
|
||
"clear",
|
||
"color",
|
||
"face",
|
||
"noshade",
|
||
"noresize",
|
||
"scrolling",
|
||
"target",
|
||
"method",
|
||
"enctype",
|
||
"accept-charset",
|
||
"accept",
|
||
"checked",
|
||
"multiple",
|
||
"selected",
|
||
"disabled",
|
||
"readonly",
|
||
"language",
|
||
"defer",
|
||
"type",
|
||
// additional attributes not in HTML4
|
||
"direction", // marquee
|
||
nullptr
|
||
};
|
||
short i = 0;
|
||
const char* htmlAttr;
|
||
while ((htmlAttr = caseInsensitiveHTMLAttribute[i++])) {
|
||
if (attr.LowerCaseEqualsASCII(htmlAttr)) {
|
||
isCaseSensitive = false;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
aDataMask |= SEL_MASK_ATTRIB;
|
||
aSelector.AddAttribute(nameSpaceID, attr, func, value, isCaseSensitive);
|
||
}
|
||
else {
|
||
REPORT_UNEXPECTED_TOKEN(PEAttSelNoClose);
|
||
UngetToken();
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
}
|
||
else {
|
||
REPORT_UNEXPECTED_TOKEN(PEAttSelBadValue);
|
||
UngetToken();
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
}
|
||
}
|
||
else {
|
||
REPORT_UNEXPECTED_TOKEN(PEAttSelUnexpected);
|
||
UngetToken(); // bad dog, no biscut!
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
return eSelectorParsingStatus_Continue;
|
||
}
|
||
|
||
//
|
||
// Parse pseudo-classes and pseudo-elements
|
||
//
|
||
CSSParserImpl::nsSelectorParsingStatus
|
||
CSSParserImpl::ParsePseudoSelector(int32_t& aDataMask,
|
||
nsCSSSelector& aSelector,
|
||
bool aIsNegated,
|
||
nsIAtom** aPseudoElement,
|
||
nsAtomList** aPseudoElementArgs,
|
||
nsCSSPseudoElements::Type* aPseudoElementType)
|
||
{
|
||
NS_ASSERTION(aIsNegated || (aPseudoElement && aPseudoElementArgs),
|
||
"expected location to store pseudo element");
|
||
NS_ASSERTION(!aIsNegated || (!aPseudoElement && !aPseudoElementArgs),
|
||
"negated selectors shouldn't have a place to store "
|
||
"pseudo elements");
|
||
if (! GetToken(false)) { // premature eof
|
||
REPORT_UNEXPECTED_EOF(PEPseudoSelEOF);
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
|
||
// First, find out whether we are parsing a CSS3 pseudo-element
|
||
bool parsingPseudoElement = false;
|
||
if (mToken.IsSymbol(':')) {
|
||
parsingPseudoElement = true;
|
||
if (! GetToken(false)) { // premature eof
|
||
REPORT_UNEXPECTED_EOF(PEPseudoSelEOF);
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
}
|
||
|
||
// Do some sanity-checking on the token
|
||
if (eCSSToken_Ident != mToken.mType && eCSSToken_Function != mToken.mType) {
|
||
// malformed selector
|
||
REPORT_UNEXPECTED_TOKEN(PEPseudoSelBadName);
|
||
UngetToken();
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
|
||
// OK, now we know we have an mIdent. Atomize it. All the atoms, for
|
||
// pseudo-classes as well as pseudo-elements, start with a single ':'.
|
||
nsAutoString buffer;
|
||
buffer.Append(char16_t(':'));
|
||
buffer.Append(mToken.mIdent);
|
||
nsContentUtils::ASCIIToLower(buffer);
|
||
nsCOMPtr<nsIAtom> pseudo = do_GetAtom(buffer);
|
||
if (!pseudo) {
|
||
NS_RUNTIMEABORT("do_GetAtom failed - out of memory?");
|
||
}
|
||
|
||
// stash away some info about this pseudo so we only have to get it once.
|
||
bool isTreePseudo = false;
|
||
nsCSSPseudoElements::Type pseudoElementType =
|
||
nsCSSPseudoElements::GetPseudoType(pseudo);
|
||
nsCSSPseudoClasses::Type pseudoClassType =
|
||
nsCSSPseudoClasses::GetPseudoType(pseudo);
|
||
bool pseudoClassIsUserAction =
|
||
nsCSSPseudoClasses::IsUserActionPseudoClass(pseudoClassType);
|
||
|
||
if (!mUnsafeRulesEnabled &&
|
||
pseudoElementType < nsCSSPseudoElements::ePseudo_PseudoElementCount &&
|
||
nsCSSPseudoElements::PseudoElementIsChromeOnly(pseudoElementType)) {
|
||
// This pseudo-element is not exposed to content.
|
||
REPORT_UNEXPECTED_TOKEN(PEPseudoSelUnknown);
|
||
UngetToken();
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
|
||
// We currently allow :-moz-placeholder and ::-moz-placeholder. We have to
|
||
// be a bit stricter regarding the pseudo-element parsing rules.
|
||
if (pseudoElementType == nsCSSPseudoElements::ePseudo_mozPlaceholder &&
|
||
pseudoClassType == nsCSSPseudoClasses::ePseudoClass_mozPlaceholder) {
|
||
if (parsingPseudoElement) {
|
||
pseudoClassType = nsCSSPseudoClasses::ePseudoClass_NotPseudoClass;
|
||
} else {
|
||
pseudoElementType = nsCSSPseudoElements::ePseudo_NotPseudoElement;
|
||
}
|
||
}
|
||
|
||
#ifdef MOZ_XUL
|
||
isTreePseudo = (pseudoElementType == nsCSSPseudoElements::ePseudo_XULTree);
|
||
// If a tree pseudo-element is using the function syntax, it will
|
||
// get isTree set here and will pass the check below that only
|
||
// allows functions if they are in our list of things allowed to be
|
||
// functions. If it is _not_ using the function syntax, isTree will
|
||
// be false, and it will still pass that check. So the tree
|
||
// pseudo-elements are allowed to be either functions or not, as
|
||
// desired.
|
||
bool isTree = (eCSSToken_Function == mToken.mType) && isTreePseudo;
|
||
#endif
|
||
bool isPseudoElement =
|
||
(pseudoElementType < nsCSSPseudoElements::ePseudo_PseudoElementCount);
|
||
// anonymous boxes are only allowed if they're the tree boxes or we have
|
||
// enabled unsafe rules
|
||
bool isAnonBox = isTreePseudo ||
|
||
(pseudoElementType == nsCSSPseudoElements::ePseudo_AnonBox &&
|
||
mUnsafeRulesEnabled);
|
||
bool isPseudoClass =
|
||
(pseudoClassType != nsCSSPseudoClasses::ePseudoClass_NotPseudoClass);
|
||
|
||
NS_ASSERTION(!isPseudoClass ||
|
||
pseudoElementType == nsCSSPseudoElements::ePseudo_NotPseudoElement,
|
||
"Why is this atom both a pseudo-class and a pseudo-element?");
|
||
NS_ASSERTION(isPseudoClass + isPseudoElement + isAnonBox <= 1,
|
||
"Shouldn't be more than one of these");
|
||
|
||
if (!isPseudoClass && !isPseudoElement && !isAnonBox) {
|
||
// Not a pseudo-class, not a pseudo-element.... forget it
|
||
REPORT_UNEXPECTED_TOKEN(PEPseudoSelUnknown);
|
||
UngetToken();
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
|
||
// If it's a function token, it better be on our "ok" list, and if the name
|
||
// is that of a function pseudo it better be a function token
|
||
if ((eCSSToken_Function == mToken.mType) !=
|
||
(
|
||
#ifdef MOZ_XUL
|
||
isTree ||
|
||
#endif
|
||
nsCSSPseudoClasses::ePseudoClass_notPseudo == pseudoClassType ||
|
||
nsCSSPseudoClasses::HasStringArg(pseudoClassType) ||
|
||
nsCSSPseudoClasses::HasNthPairArg(pseudoClassType) ||
|
||
nsCSSPseudoClasses::HasSelectorListArg(pseudoClassType))) {
|
||
// There are no other function pseudos
|
||
REPORT_UNEXPECTED_TOKEN(PEPseudoSelNonFunc);
|
||
UngetToken();
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
|
||
// If it starts with "::", it better be a pseudo-element
|
||
if (parsingPseudoElement &&
|
||
!isPseudoElement &&
|
||
!isAnonBox) {
|
||
REPORT_UNEXPECTED_TOKEN(PEPseudoSelNotPE);
|
||
UngetToken();
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
|
||
if (!parsingPseudoElement &&
|
||
nsCSSPseudoClasses::ePseudoClass_notPseudo == pseudoClassType) {
|
||
if (aIsNegated) { // :not() can't be itself negated
|
||
REPORT_UNEXPECTED_TOKEN(PEPseudoSelDoubleNot);
|
||
UngetToken();
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
// CSS 3 Negation pseudo-class takes one simple selector as argument
|
||
nsSelectorParsingStatus parsingStatus =
|
||
ParseNegatedSimpleSelector(aDataMask, aSelector);
|
||
if (eSelectorParsingStatus_Continue != parsingStatus) {
|
||
return parsingStatus;
|
||
}
|
||
}
|
||
else if (!parsingPseudoElement && isPseudoClass) {
|
||
if (aSelector.IsPseudoElement()) {
|
||
nsCSSPseudoElements::Type type = aSelector.PseudoType();
|
||
if (!nsCSSPseudoElements::PseudoElementSupportsUserActionState(type)) {
|
||
// We only allow user action pseudo-classes on certain pseudo-elements.
|
||
REPORT_UNEXPECTED_TOKEN(PEPseudoSelNoUserActionPC);
|
||
UngetToken();
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
if (!pseudoClassIsUserAction) {
|
||
// CSS 4 Selectors says that pseudo-elements can only be followed by
|
||
// a user action pseudo-class.
|
||
REPORT_UNEXPECTED_TOKEN(PEPseudoClassNotUserAction);
|
||
UngetToken();
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
}
|
||
aDataMask |= SEL_MASK_PCLASS;
|
||
if (eCSSToken_Function == mToken.mType) {
|
||
nsSelectorParsingStatus parsingStatus;
|
||
if (nsCSSPseudoClasses::HasStringArg(pseudoClassType)) {
|
||
parsingStatus =
|
||
ParsePseudoClassWithIdentArg(aSelector, pseudoClassType);
|
||
}
|
||
else if (nsCSSPseudoClasses::HasNthPairArg(pseudoClassType)) {
|
||
parsingStatus =
|
||
ParsePseudoClassWithNthPairArg(aSelector, pseudoClassType);
|
||
}
|
||
else {
|
||
NS_ABORT_IF_FALSE(nsCSSPseudoClasses::HasSelectorListArg(pseudoClassType),
|
||
"unexpected pseudo with function token");
|
||
parsingStatus = ParsePseudoClassWithSelectorListArg(aSelector,
|
||
pseudoClassType);
|
||
}
|
||
if (eSelectorParsingStatus_Continue != parsingStatus) {
|
||
if (eSelectorParsingStatus_Error == parsingStatus) {
|
||
SkipUntil(')');
|
||
}
|
||
return parsingStatus;
|
||
}
|
||
}
|
||
else {
|
||
aSelector.AddPseudoClass(pseudoClassType);
|
||
}
|
||
}
|
||
else if (isPseudoElement || isAnonBox) {
|
||
// Pseudo-element. Make some more sanity checks.
|
||
|
||
if (aIsNegated) { // pseudo-elements can't be negated
|
||
REPORT_UNEXPECTED_TOKEN(PEPseudoSelPEInNot);
|
||
UngetToken();
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
// CSS2 pseudo-elements and -moz-tree-* pseudo-elements are allowed
|
||
// to have a single ':' on them. Others (CSS3+ pseudo-elements and
|
||
// various -moz-* pseudo-elements) must have |parsingPseudoElement|
|
||
// set.
|
||
if (!parsingPseudoElement &&
|
||
!nsCSSPseudoElements::IsCSS2PseudoElement(pseudo)
|
||
#ifdef MOZ_XUL
|
||
&& !isTreePseudo
|
||
#endif
|
||
) {
|
||
REPORT_UNEXPECTED_TOKEN(PEPseudoSelNewStyleOnly);
|
||
UngetToken();
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
|
||
if (0 == (aDataMask & SEL_MASK_PELEM)) {
|
||
aDataMask |= SEL_MASK_PELEM;
|
||
NS_ADDREF(*aPseudoElement = pseudo);
|
||
*aPseudoElementType = pseudoElementType;
|
||
|
||
#ifdef MOZ_XUL
|
||
if (isTree) {
|
||
// We have encountered a pseudoelement of the form
|
||
// -moz-tree-xxxx(a,b,c). We parse (a,b,c) and add each
|
||
// item in the list to the pseudoclass list. They will be pulled
|
||
// from the list later along with the pseudo-element.
|
||
if (!ParseTreePseudoElement(aPseudoElementArgs)) {
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
}
|
||
#endif
|
||
|
||
// Pseudo-elements can only be followed by user action pseudo-classes
|
||
// or be the end of the selector. So the next non-whitespace token must
|
||
// be ':', '{' or ',' or EOF.
|
||
if (!GetToken(true)) { // premature eof is ok (here!)
|
||
return eSelectorParsingStatus_Done;
|
||
}
|
||
if (parsingPseudoElement && mToken.IsSymbol(':')) {
|
||
UngetToken();
|
||
return eSelectorParsingStatus_Continue;
|
||
}
|
||
if ((mToken.IsSymbol('{') || mToken.IsSymbol(','))) {
|
||
UngetToken();
|
||
return eSelectorParsingStatus_Done;
|
||
}
|
||
REPORT_UNEXPECTED_TOKEN(PEPseudoSelEndOrUserActionPC);
|
||
UngetToken();
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
else { // multiple pseudo elements, not legal
|
||
REPORT_UNEXPECTED_TOKEN(PEPseudoSelMultiplePE);
|
||
UngetToken();
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
}
|
||
#ifdef DEBUG
|
||
else {
|
||
// We should never end up here. Indeed, if we ended up here, we know (from
|
||
// the current if/else cascade) that !isPseudoElement and !isAnonBox. But
|
||
// then due to our earlier check we know that isPseudoClass. Since we
|
||
// didn't fall into the isPseudoClass case in this cascade, we must have
|
||
// parsingPseudoElement. But we've already checked the
|
||
// parsingPseudoElement && !isPseudoClass && !isAnonBox case and bailed if
|
||
// it's happened.
|
||
NS_NOTREACHED("How did this happen?");
|
||
}
|
||
#endif
|
||
return eSelectorParsingStatus_Continue;
|
||
}
|
||
|
||
//
|
||
// Parse the argument of a negation pseudo-class :not()
|
||
//
|
||
CSSParserImpl::nsSelectorParsingStatus
|
||
CSSParserImpl::ParseNegatedSimpleSelector(int32_t& aDataMask,
|
||
nsCSSSelector& aSelector)
|
||
{
|
||
if (! GetToken(true)) { // premature eof
|
||
REPORT_UNEXPECTED_EOF(PENegationEOF);
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
|
||
if (mToken.IsSymbol(')')) {
|
||
REPORT_UNEXPECTED_TOKEN(PENegationBadArg);
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
|
||
// Create a new nsCSSSelector and add it to the end of
|
||
// aSelector.mNegations.
|
||
// Given the current parsing rules, every selector in mNegations
|
||
// contains only one simple selector (css3 definition) within it.
|
||
// This could easily change in future versions of CSS, and the only
|
||
// thing we need to change to support that is this parsing code and the
|
||
// serialization code for nsCSSSelector.
|
||
nsCSSSelector *newSel = new nsCSSSelector();
|
||
nsCSSSelector* negations = &aSelector;
|
||
while (negations->mNegations) {
|
||
negations = negations->mNegations;
|
||
}
|
||
negations->mNegations = newSel;
|
||
|
||
nsSelectorParsingStatus parsingStatus;
|
||
if (eCSSToken_ID == mToken.mType) { // #id
|
||
parsingStatus = ParseIDSelector(aDataMask, *newSel);
|
||
}
|
||
else if (mToken.IsSymbol('.')) { // .class
|
||
parsingStatus = ParseClassSelector(aDataMask, *newSel);
|
||
}
|
||
else if (mToken.IsSymbol(':')) { // :pseudo
|
||
parsingStatus = ParsePseudoSelector(aDataMask, *newSel, true,
|
||
nullptr, nullptr, nullptr);
|
||
}
|
||
else if (mToken.IsSymbol('[')) { // [attribute
|
||
parsingStatus = ParseAttributeSelector(aDataMask, *newSel);
|
||
if (eSelectorParsingStatus_Error == parsingStatus) {
|
||
// Skip forward to the matching ']'
|
||
SkipUntil(']');
|
||
}
|
||
}
|
||
else {
|
||
// then it should be a type element or universal selector
|
||
parsingStatus = ParseTypeOrUniversalSelector(aDataMask, *newSel, true);
|
||
}
|
||
if (eSelectorParsingStatus_Error == parsingStatus) {
|
||
REPORT_UNEXPECTED_TOKEN(PENegationBadInner);
|
||
SkipUntil(')');
|
||
return parsingStatus;
|
||
}
|
||
// close the parenthesis
|
||
if (!ExpectSymbol(')', true)) {
|
||
REPORT_UNEXPECTED_TOKEN(PENegationNoClose);
|
||
SkipUntil(')');
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
|
||
NS_ASSERTION(newSel->mNameSpace == kNameSpaceID_Unknown ||
|
||
(!newSel->mIDList && !newSel->mClassList &&
|
||
!newSel->mPseudoClassList && !newSel->mAttrList),
|
||
"Need to fix the serialization code to deal with this");
|
||
|
||
return eSelectorParsingStatus_Continue;
|
||
}
|
||
|
||
//
|
||
// Parse the argument of a pseudo-class that has an ident arg
|
||
//
|
||
CSSParserImpl::nsSelectorParsingStatus
|
||
CSSParserImpl::ParsePseudoClassWithIdentArg(nsCSSSelector& aSelector,
|
||
nsCSSPseudoClasses::Type aType)
|
||
{
|
||
if (! GetToken(true)) { // premature eof
|
||
REPORT_UNEXPECTED_EOF(PEPseudoClassArgEOF);
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
// We expect an identifier with a language abbreviation
|
||
if (eCSSToken_Ident != mToken.mType) {
|
||
REPORT_UNEXPECTED_TOKEN(PEPseudoClassArgNotIdent);
|
||
UngetToken();
|
||
return eSelectorParsingStatus_Error; // our caller calls SkipUntil(')')
|
||
}
|
||
|
||
// -moz-locale-dir and -moz-dir can only have values of 'ltr' or 'rtl'.
|
||
if (aType == nsCSSPseudoClasses::ePseudoClass_mozLocaleDir ||
|
||
aType == nsCSSPseudoClasses::ePseudoClass_dir) {
|
||
nsContentUtils::ASCIIToLower(mToken.mIdent); // case insensitive
|
||
if (!mToken.mIdent.EqualsLiteral("ltr") &&
|
||
!mToken.mIdent.EqualsLiteral("rtl")) {
|
||
REPORT_UNEXPECTED_TOKEN(PEBadDirValue);
|
||
return eSelectorParsingStatus_Error; // our caller calls SkipUntil(')')
|
||
}
|
||
}
|
||
|
||
// Add the pseudo with the language parameter
|
||
aSelector.AddPseudoClass(aType, mToken.mIdent.get());
|
||
|
||
// close the parenthesis
|
||
if (!ExpectSymbol(')', true)) {
|
||
REPORT_UNEXPECTED_TOKEN(PEPseudoClassNoClose);
|
||
return eSelectorParsingStatus_Error; // our caller calls SkipUntil(')')
|
||
}
|
||
|
||
return eSelectorParsingStatus_Continue;
|
||
}
|
||
|
||
CSSParserImpl::nsSelectorParsingStatus
|
||
CSSParserImpl::ParsePseudoClassWithNthPairArg(nsCSSSelector& aSelector,
|
||
nsCSSPseudoClasses::Type aType)
|
||
{
|
||
int32_t numbers[2] = { 0, 0 };
|
||
int32_t sign[2] = { 1, 1 };
|
||
bool hasSign[2] = { false, false };
|
||
bool lookForB = true;
|
||
|
||
// Follow the whitespace rules as proposed in
|
||
// http://lists.w3.org/Archives/Public/www-style/2008Mar/0121.html
|
||
|
||
if (! GetToken(true)) {
|
||
REPORT_UNEXPECTED_EOF(PEPseudoClassArgEOF);
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
|
||
if (mToken.IsSymbol('+') || mToken.IsSymbol('-')) {
|
||
hasSign[0] = true;
|
||
if (mToken.IsSymbol('-')) {
|
||
sign[0] = -1;
|
||
}
|
||
if (! GetToken(false)) {
|
||
REPORT_UNEXPECTED_EOF(PEPseudoClassArgEOF);
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
}
|
||
|
||
if (eCSSToken_Ident == mToken.mType || eCSSToken_Dimension == mToken.mType) {
|
||
// The CSS tokenization doesn't handle :nth-child() containing - well:
|
||
// 2n-1 is a dimension
|
||
// n-1 is an identifier
|
||
// The easiest way to deal with that is to push everything from the
|
||
// minus on back onto the scanner's pushback buffer.
|
||
uint32_t truncAt = 0;
|
||
if (StringBeginsWith(mToken.mIdent, NS_LITERAL_STRING("n-"))) {
|
||
truncAt = 1;
|
||
} else if (StringBeginsWith(mToken.mIdent, NS_LITERAL_STRING("-n-")) && !hasSign[0]) {
|
||
truncAt = 2;
|
||
}
|
||
if (truncAt != 0) {
|
||
mScanner->Backup(mToken.mIdent.Length() - truncAt);
|
||
mToken.mIdent.Truncate(truncAt);
|
||
}
|
||
}
|
||
|
||
if (eCSSToken_Ident == mToken.mType) {
|
||
if (mToken.mIdent.LowerCaseEqualsLiteral("odd") && !hasSign[0]) {
|
||
numbers[0] = 2;
|
||
numbers[1] = 1;
|
||
lookForB = false;
|
||
}
|
||
else if (mToken.mIdent.LowerCaseEqualsLiteral("even") && !hasSign[0]) {
|
||
numbers[0] = 2;
|
||
numbers[1] = 0;
|
||
lookForB = false;
|
||
}
|
||
else if (mToken.mIdent.LowerCaseEqualsLiteral("n")) {
|
||
numbers[0] = sign[0];
|
||
}
|
||
else if (mToken.mIdent.LowerCaseEqualsLiteral("-n") && !hasSign[0]) {
|
||
numbers[0] = -1;
|
||
}
|
||
else {
|
||
REPORT_UNEXPECTED_TOKEN(PEPseudoClassArgNotNth);
|
||
return eSelectorParsingStatus_Error; // our caller calls SkipUntil(')')
|
||
}
|
||
}
|
||
else if (eCSSToken_Number == mToken.mType) {
|
||
if (!mToken.mIntegerValid) {
|
||
REPORT_UNEXPECTED_TOKEN(PEPseudoClassArgNotNth);
|
||
return eSelectorParsingStatus_Error; // our caller calls SkipUntil(')')
|
||
}
|
||
// for +-an case
|
||
if (mToken.mHasSign && hasSign[0]) {
|
||
REPORT_UNEXPECTED_TOKEN(PEPseudoClassArgNotNth);
|
||
return eSelectorParsingStatus_Error; // our caller calls SkipUntil(')')
|
||
}
|
||
int32_t intValue = mToken.mInteger * sign[0];
|
||
// for -a/**/n case
|
||
if (! GetToken(false)) {
|
||
numbers[1] = intValue;
|
||
lookForB = false;
|
||
}
|
||
else {
|
||
if (eCSSToken_Ident == mToken.mType && mToken.mIdent.LowerCaseEqualsLiteral("n")) {
|
||
numbers[0] = intValue;
|
||
}
|
||
else if (eCSSToken_Ident == mToken.mType && StringBeginsWith(mToken.mIdent, NS_LITERAL_STRING("n-"))) {
|
||
numbers[0] = intValue;
|
||
mScanner->Backup(mToken.mIdent.Length() - 1);
|
||
}
|
||
else {
|
||
UngetToken();
|
||
numbers[1] = intValue;
|
||
lookForB = false;
|
||
}
|
||
}
|
||
}
|
||
else if (eCSSToken_Dimension == mToken.mType) {
|
||
if (!mToken.mIntegerValid || !mToken.mIdent.LowerCaseEqualsLiteral("n")) {
|
||
REPORT_UNEXPECTED_TOKEN(PEPseudoClassArgNotNth);
|
||
return eSelectorParsingStatus_Error; // our caller calls SkipUntil(')')
|
||
}
|
||
// for +-an case
|
||
if ( mToken.mHasSign && hasSign[0] ) {
|
||
REPORT_UNEXPECTED_TOKEN(PEPseudoClassArgNotNth);
|
||
return eSelectorParsingStatus_Error; // our caller calls SkipUntil(')')
|
||
}
|
||
numbers[0] = mToken.mInteger * sign[0];
|
||
}
|
||
// XXX If it's a ')', is that valid? (as 0n+0)
|
||
else {
|
||
REPORT_UNEXPECTED_TOKEN(PEPseudoClassArgNotNth);
|
||
UngetToken();
|
||
return eSelectorParsingStatus_Error; // our caller calls SkipUntil(')')
|
||
}
|
||
|
||
if (! GetToken(true)) {
|
||
REPORT_UNEXPECTED_EOF(PEPseudoClassArgEOF);
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
if (lookForB && !mToken.IsSymbol(')')) {
|
||
// The '+' or '-' sign can optionally be separated by whitespace.
|
||
// If it is separated by whitespace from what follows it, it appears
|
||
// as a separate token rather than part of the number token.
|
||
if (mToken.IsSymbol('+') || mToken.IsSymbol('-')) {
|
||
hasSign[1] = true;
|
||
if (mToken.IsSymbol('-')) {
|
||
sign[1] = -1;
|
||
}
|
||
if (! GetToken(true)) {
|
||
REPORT_UNEXPECTED_EOF(PEPseudoClassArgEOF);
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
}
|
||
if (eCSSToken_Number != mToken.mType ||
|
||
!mToken.mIntegerValid || mToken.mHasSign == hasSign[1]) {
|
||
REPORT_UNEXPECTED_TOKEN(PEPseudoClassArgNotNth);
|
||
UngetToken();
|
||
return eSelectorParsingStatus_Error; // our caller calls SkipUntil(')')
|
||
}
|
||
numbers[1] = mToken.mInteger * sign[1];
|
||
if (! GetToken(true)) {
|
||
REPORT_UNEXPECTED_EOF(PEPseudoClassArgEOF);
|
||
return eSelectorParsingStatus_Error;
|
||
}
|
||
}
|
||
if (!mToken.IsSymbol(')')) {
|
||
REPORT_UNEXPECTED_TOKEN(PEPseudoClassNoClose);
|
||
return eSelectorParsingStatus_Error; // our caller calls SkipUntil(')')
|
||
}
|
||
aSelector.AddPseudoClass(aType, numbers);
|
||
return eSelectorParsingStatus_Continue;
|
||
}
|
||
|
||
//
|
||
// Parse the argument of a pseudo-class that has a selector list argument.
|
||
// Such selector lists cannot contain combinators, but can contain
|
||
// anything that goes between a pair of combinators.
|
||
//
|
||
CSSParserImpl::nsSelectorParsingStatus
|
||
CSSParserImpl::ParsePseudoClassWithSelectorListArg(nsCSSSelector& aSelector,
|
||
nsCSSPseudoClasses::Type aType)
|
||
{
|
||
nsAutoPtr<nsCSSSelectorList> slist;
|
||
if (! ParseSelectorList(*getter_Transfers(slist), char16_t(')'))) {
|
||
return eSelectorParsingStatus_Error; // our caller calls SkipUntil(')')
|
||
}
|
||
|
||
// Check that none of the selectors in the list have combinators or
|
||
// pseudo-elements.
|
||
for (nsCSSSelectorList *l = slist; l; l = l->mNext) {
|
||
nsCSSSelector *s = l->mSelectors;
|
||
if (s->mNext || s->IsPseudoElement()) {
|
||
return eSelectorParsingStatus_Error; // our caller calls SkipUntil(')')
|
||
}
|
||
}
|
||
|
||
// Add the pseudo with the selector list parameter
|
||
aSelector.AddPseudoClass(aType, slist.forget());
|
||
|
||
// close the parenthesis
|
||
if (!ExpectSymbol(')', true)) {
|
||
REPORT_UNEXPECTED_TOKEN(PEPseudoClassNoClose);
|
||
return eSelectorParsingStatus_Error; // our caller calls SkipUntil(')')
|
||
}
|
||
|
||
return eSelectorParsingStatus_Continue;
|
||
}
|
||
|
||
|
||
/**
|
||
* This is the format for selectors:
|
||
* operator? [[namespace |]? element_name]? [ ID | class | attrib | pseudo ]*
|
||
*/
|
||
bool
|
||
CSSParserImpl::ParseSelector(nsCSSSelectorList* aList,
|
||
char16_t aPrevCombinator)
|
||
{
|
||
if (! GetToken(true)) {
|
||
REPORT_UNEXPECTED_EOF(PESelectorEOF);
|
||
return false;
|
||
}
|
||
|
||
nsCSSSelector* selector = aList->AddSelector(aPrevCombinator);
|
||
nsCOMPtr<nsIAtom> pseudoElement;
|
||
nsAutoPtr<nsAtomList> pseudoElementArgs;
|
||
nsCSSPseudoElements::Type pseudoElementType =
|
||
nsCSSPseudoElements::ePseudo_NotPseudoElement;
|
||
|
||
int32_t dataMask = 0;
|
||
nsSelectorParsingStatus parsingStatus =
|
||
ParseTypeOrUniversalSelector(dataMask, *selector, false);
|
||
|
||
while (parsingStatus == eSelectorParsingStatus_Continue) {
|
||
if (eCSSToken_ID == mToken.mType) { // #id
|
||
parsingStatus = ParseIDSelector(dataMask, *selector);
|
||
}
|
||
else if (mToken.IsSymbol('.')) { // .class
|
||
parsingStatus = ParseClassSelector(dataMask, *selector);
|
||
}
|
||
else if (mToken.IsSymbol(':')) { // :pseudo
|
||
parsingStatus = ParsePseudoSelector(dataMask, *selector, false,
|
||
getter_AddRefs(pseudoElement),
|
||
getter_Transfers(pseudoElementArgs),
|
||
&pseudoElementType);
|
||
if (pseudoElement &&
|
||
pseudoElementType != nsCSSPseudoElements::ePseudo_AnonBox) {
|
||
// Pseudo-elements other than anonymous boxes are represented with
|
||
// a special ':' combinator.
|
||
|
||
aList->mWeight += selector->CalcWeight();
|
||
|
||
selector = aList->AddSelector(':');
|
||
|
||
selector->mLowercaseTag.swap(pseudoElement);
|
||
selector->mClassList = pseudoElementArgs.forget();
|
||
selector->SetPseudoType(pseudoElementType);
|
||
}
|
||
}
|
||
else if (mToken.IsSymbol('[')) { // [attribute
|
||
parsingStatus = ParseAttributeSelector(dataMask, *selector);
|
||
if (eSelectorParsingStatus_Error == parsingStatus) {
|
||
SkipUntil(']');
|
||
}
|
||
}
|
||
else { // not a selector token, we're done
|
||
parsingStatus = eSelectorParsingStatus_Done;
|
||
UngetToken();
|
||
break;
|
||
}
|
||
|
||
if (parsingStatus != eSelectorParsingStatus_Continue) {
|
||
break;
|
||
}
|
||
|
||
if (! GetToken(false)) { // premature eof is ok (here!)
|
||
parsingStatus = eSelectorParsingStatus_Done;
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (parsingStatus == eSelectorParsingStatus_Error) {
|
||
return false;
|
||
}
|
||
|
||
if (!dataMask) {
|
||
if (selector->mNext) {
|
||
REPORT_UNEXPECTED(PESelectorGroupExtraCombinator);
|
||
} else {
|
||
REPORT_UNEXPECTED(PESelectorGroupNoSelector);
|
||
}
|
||
return false;
|
||
}
|
||
|
||
if (pseudoElementType == nsCSSPseudoElements::ePseudo_AnonBox) {
|
||
// We got an anonymous box pseudo-element; it must be the only
|
||
// thing in this selector group.
|
||
if (selector->mNext || !IsUniversalSelector(*selector)) {
|
||
REPORT_UNEXPECTED(PEAnonBoxNotAlone);
|
||
return false;
|
||
}
|
||
|
||
// Rewrite the current selector as this pseudo-element.
|
||
// It does not contribute to selector weight.
|
||
selector->mLowercaseTag.swap(pseudoElement);
|
||
selector->mClassList = pseudoElementArgs.forget();
|
||
selector->SetPseudoType(pseudoElementType);
|
||
return true;
|
||
}
|
||
|
||
aList->mWeight += selector->CalcWeight();
|
||
|
||
return true;
|
||
}
|
||
|
||
css::Declaration*
|
||
CSSParserImpl::ParseDeclarationBlock(uint32_t aFlags, nsCSSContextType aContext)
|
||
{
|
||
bool checkForBraces = (aFlags & eParseDeclaration_InBraces) != 0;
|
||
|
||
if (checkForBraces) {
|
||
if (!ExpectSymbol('{', true)) {
|
||
REPORT_UNEXPECTED_TOKEN(PEBadDeclBlockStart);
|
||
OUTPUT_ERROR();
|
||
return nullptr;
|
||
}
|
||
}
|
||
css::Declaration* declaration = new css::Declaration();
|
||
mData.AssertInitialState();
|
||
if (declaration) {
|
||
for (;;) {
|
||
bool changed;
|
||
if (!ParseDeclaration(declaration, aFlags, true, &changed, aContext)) {
|
||
if (!SkipDeclaration(checkForBraces)) {
|
||
break;
|
||
}
|
||
if (checkForBraces) {
|
||
if (ExpectSymbol('}', true)) {
|
||
break;
|
||
}
|
||
}
|
||
// Since the skipped declaration didn't end the block we parse
|
||
// the next declaration.
|
||
}
|
||
}
|
||
declaration->CompressFrom(&mData);
|
||
}
|
||
return declaration;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseColor(nsCSSValue& aValue)
|
||
{
|
||
if (!GetToken(true)) {
|
||
REPORT_UNEXPECTED_EOF(PEColorEOF);
|
||
return false;
|
||
}
|
||
|
||
nsCSSToken* tk = &mToken;
|
||
nscolor rgba;
|
||
switch (tk->mType) {
|
||
case eCSSToken_ID:
|
||
case eCSSToken_Hash:
|
||
// #xxyyzz
|
||
if (NS_HexToRGB(tk->mIdent, &rgba)) {
|
||
MOZ_ASSERT(tk->mIdent.Length() == 3 || tk->mIdent.Length() == 6,
|
||
"unexpected hex color length");
|
||
nsCSSUnit unit = tk->mIdent.Length() == 3 ?
|
||
eCSSUnit_ShortHexColor :
|
||
eCSSUnit_HexColor;
|
||
aValue.SetIntegerColorValue(rgba, unit);
|
||
return true;
|
||
}
|
||
break;
|
||
|
||
case eCSSToken_Ident:
|
||
if (NS_ColorNameToRGB(tk->mIdent, &rgba)) {
|
||
aValue.SetStringValue(tk->mIdent, eCSSUnit_Ident);
|
||
return true;
|
||
}
|
||
else {
|
||
nsCSSKeyword keyword = nsCSSKeywords::LookupKeyword(tk->mIdent);
|
||
if (eCSSKeyword_UNKNOWN < keyword) { // known keyword
|
||
int32_t value;
|
||
if (nsCSSProps::FindKeyword(keyword, nsCSSProps::kColorKTable, value)) {
|
||
aValue.SetIntValue(value, eCSSUnit_EnumColor);
|
||
return true;
|
||
}
|
||
}
|
||
}
|
||
break;
|
||
case eCSSToken_Function:
|
||
if (mToken.mIdent.LowerCaseEqualsLiteral("rgb")) {
|
||
// rgb ( component , component , component )
|
||
if (GetToken(true)) {
|
||
UngetToken();
|
||
}
|
||
if (mToken.mType == eCSSToken_Number) {
|
||
uint8_t r, g, b;
|
||
if (ParseNumberColorComponent(r, ',') &&
|
||
ParseNumberColorComponent(g, ',') &&
|
||
ParseNumberColorComponent(b, ')')) {
|
||
aValue.SetIntegerColorValue(NS_RGB(r, g, b), eCSSUnit_RGBColor);
|
||
return true;
|
||
}
|
||
} else {
|
||
float r, g, b;
|
||
if (ParsePercentageColorComponent(r, ',') &&
|
||
ParsePercentageColorComponent(g, ',') &&
|
||
ParsePercentageColorComponent(b, ')')) {
|
||
aValue.SetFloatColorValue(r, g, b, 1.0f,
|
||
eCSSUnit_PercentageRGBColor);
|
||
return true;
|
||
}
|
||
}
|
||
SkipUntil(')');
|
||
return false;
|
||
}
|
||
else if (mToken.mIdent.LowerCaseEqualsLiteral("rgba")) {
|
||
// rgba ( component , component , component , opacity )
|
||
if (GetToken(true)) {
|
||
UngetToken();
|
||
}
|
||
if (mToken.mType == eCSSToken_Number) {
|
||
uint8_t r, g, b, a;
|
||
if (ParseNumberColorComponent(r, ',') &&
|
||
ParseNumberColorComponent(g, ',') &&
|
||
ParseNumberColorComponent(b, ',') &&
|
||
ParseColorOpacity(a)) {
|
||
aValue.SetIntegerColorValue(NS_RGBA(r, g, b, a),
|
||
eCSSUnit_RGBAColor);
|
||
return true;
|
||
}
|
||
} else {
|
||
float r, g, b, a;
|
||
if (ParsePercentageColorComponent(r, ',') &&
|
||
ParsePercentageColorComponent(g, ',') &&
|
||
ParsePercentageColorComponent(b, ',') &&
|
||
ParseColorOpacity(a)) {
|
||
aValue.SetFloatColorValue(r, g, b, a, eCSSUnit_PercentageRGBAColor);
|
||
return true;
|
||
}
|
||
}
|
||
SkipUntil(')');
|
||
return false;
|
||
}
|
||
else if (mToken.mIdent.LowerCaseEqualsLiteral("hsl")) {
|
||
// hsl ( hue , saturation , lightness )
|
||
// "hue" is a number, "saturation" and "lightness" are percentages.
|
||
float h, s, l;
|
||
if (ParseHSLColor(h, s, l, ')')) {
|
||
aValue.SetFloatColorValue(h, s, l, 1.0f, eCSSUnit_HSLColor);
|
||
return true;
|
||
}
|
||
SkipUntil(')');
|
||
return false;
|
||
}
|
||
else if (mToken.mIdent.LowerCaseEqualsLiteral("hsla")) {
|
||
// hsla ( hue , saturation , lightness , opacity )
|
||
// "hue" is a number, "saturation" and "lightness" are percentages,
|
||
// "opacity" is a number.
|
||
float h, s, l, a;
|
||
if (ParseHSLColor(h, s, l, ',') &&
|
||
ParseColorOpacity(a)) {
|
||
aValue.SetFloatColorValue(h, s, l, a, eCSSUnit_HSLAColor);
|
||
return true;
|
||
}
|
||
SkipUntil(')');
|
||
return false;
|
||
}
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
|
||
// try 'xxyyzz' without '#' prefix for compatibility with IE and Nav4x (bug 23236 and 45804)
|
||
if (mHashlessColorQuirk) {
|
||
// - If the string starts with 'a-f', the nsCSSScanner builds the
|
||
// token as a eCSSToken_Ident and we can parse the string as a
|
||
// 'xxyyzz' RGB color.
|
||
// - If it only contains '0-9' digits, the token is a
|
||
// eCSSToken_Number and it must be converted back to a 6
|
||
// characters string to be parsed as a RGB color.
|
||
// - If it starts with '0-9' and contains any 'a-f', the token is a
|
||
// eCSSToken_Dimension, the mNumber part must be converted back to
|
||
// a string and the mIdent part must be appended to that string so
|
||
// that the resulting string has 6 characters.
|
||
// Note: This is a hack for Nav compatibility. Do not attempt to
|
||
// simplify it by hacking into the ncCSSScanner. This would be very
|
||
// bad.
|
||
nsAutoString str;
|
||
char buffer[20];
|
||
switch (tk->mType) {
|
||
case eCSSToken_Ident:
|
||
str.Assign(tk->mIdent);
|
||
break;
|
||
|
||
case eCSSToken_Number:
|
||
if (tk->mIntegerValid) {
|
||
PR_snprintf(buffer, sizeof(buffer), "%06d", tk->mInteger);
|
||
str.AssignWithConversion(buffer);
|
||
}
|
||
break;
|
||
|
||
case eCSSToken_Dimension:
|
||
if (tk->mIdent.Length() <= 6) {
|
||
PR_snprintf(buffer, sizeof(buffer), "%06.0f", tk->mNumber);
|
||
nsAutoString temp;
|
||
temp.AssignWithConversion(buffer);
|
||
temp.Right(str, 6 - tk->mIdent.Length());
|
||
str.Append(tk->mIdent);
|
||
}
|
||
break;
|
||
default:
|
||
// There is a whole bunch of cases that are
|
||
// not handled by this switch. Ignore them.
|
||
break;
|
||
}
|
||
if (NS_HexToRGB(str, &rgba)) {
|
||
aValue.SetIntegerColorValue(rgba, eCSSUnit_HexColor);
|
||
return true;
|
||
}
|
||
}
|
||
|
||
// It's not a color
|
||
REPORT_UNEXPECTED_TOKEN(PEColorNotColor);
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseNumberColorComponent(uint8_t& aComponent, char aStop)
|
||
{
|
||
if (!GetToken(true)) {
|
||
REPORT_UNEXPECTED_EOF(PEColorComponentEOF);
|
||
return false;
|
||
}
|
||
|
||
if (mToken.mType != eCSSToken_Number || !mToken.mIntegerValid) {
|
||
REPORT_UNEXPECTED_TOKEN(PEExpectedInt);
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
|
||
float value = mToken.mNumber;
|
||
if (value < 0.0f) value = 0.0f;
|
||
if (value > 255.0f) value = 255.0f;
|
||
|
||
if (ExpectSymbol(aStop, true)) {
|
||
aComponent = NSToIntRound(value);
|
||
return true;
|
||
}
|
||
REPORT_UNEXPECTED_TOKEN_CHAR(PEColorComponentBadTerm, aStop);
|
||
return false;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParsePercentageColorComponent(float& aComponent, char aStop)
|
||
{
|
||
if (!GetToken(true)) {
|
||
REPORT_UNEXPECTED_EOF(PEColorComponentEOF);
|
||
return false;
|
||
}
|
||
|
||
if (mToken.mType != eCSSToken_Percentage) {
|
||
REPORT_UNEXPECTED_TOKEN(PEExpectedPercent);
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
|
||
float value = mToken.mNumber;
|
||
if (value < 0.0f) value = 0.0f;
|
||
if (value > 1.0f) value = 1.0f;
|
||
|
||
if (ExpectSymbol(aStop, true)) {
|
||
aComponent = value;
|
||
return true;
|
||
}
|
||
REPORT_UNEXPECTED_TOKEN_CHAR(PEColorComponentBadTerm, aStop);
|
||
return false;
|
||
}
|
||
|
||
|
||
bool
|
||
CSSParserImpl::ParseHSLColor(float& aHue, float& aSaturation, float& aLightness,
|
||
char aStop)
|
||
{
|
||
float h, s, l;
|
||
|
||
// Get the hue
|
||
if (!GetToken(true)) {
|
||
REPORT_UNEXPECTED_EOF(PEColorHueEOF);
|
||
return false;
|
||
}
|
||
if (mToken.mType != eCSSToken_Number) {
|
||
REPORT_UNEXPECTED_TOKEN(PEExpectedNumber);
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
h = mToken.mNumber;
|
||
h /= 360.0f;
|
||
// hue values are wraparound
|
||
h = h - floor(h);
|
||
|
||
if (!ExpectSymbol(',', true)) {
|
||
REPORT_UNEXPECTED_TOKEN(PEExpectedComma);
|
||
return false;
|
||
}
|
||
|
||
// Get the saturation
|
||
if (!GetToken(true)) {
|
||
REPORT_UNEXPECTED_EOF(PEColorSaturationEOF);
|
||
return false;
|
||
}
|
||
if (mToken.mType != eCSSToken_Percentage) {
|
||
REPORT_UNEXPECTED_TOKEN(PEExpectedPercent);
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
s = mToken.mNumber;
|
||
if (s < 0.0f) s = 0.0f;
|
||
if (s > 1.0f) s = 1.0f;
|
||
|
||
if (!ExpectSymbol(',', true)) {
|
||
REPORT_UNEXPECTED_TOKEN(PEExpectedComma);
|
||
return false;
|
||
}
|
||
|
||
// Get the lightness
|
||
if (!GetToken(true)) {
|
||
REPORT_UNEXPECTED_EOF(PEColorLightnessEOF);
|
||
return false;
|
||
}
|
||
if (mToken.mType != eCSSToken_Percentage) {
|
||
REPORT_UNEXPECTED_TOKEN(PEExpectedPercent);
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
l = mToken.mNumber;
|
||
if (l < 0.0f) l = 0.0f;
|
||
if (l > 1.0f) l = 1.0f;
|
||
|
||
if (ExpectSymbol(aStop, true)) {
|
||
aHue = h;
|
||
aSaturation = s;
|
||
aLightness = l;
|
||
return true;
|
||
}
|
||
|
||
REPORT_UNEXPECTED_TOKEN_CHAR(PEColorComponentBadTerm, aStop);
|
||
return false;
|
||
}
|
||
|
||
|
||
bool
|
||
CSSParserImpl::ParseColorOpacity(uint8_t& aOpacity)
|
||
{
|
||
float floatOpacity;
|
||
if (!ParseColorOpacity(floatOpacity)) {
|
||
return false;
|
||
}
|
||
|
||
uint8_t value = nsStyleUtil::FloatToColorComponent(floatOpacity);
|
||
// Need to compare to something slightly larger
|
||
// than 0.5 due to floating point inaccuracies.
|
||
NS_ASSERTION(fabs(255.0f*mToken.mNumber - value) <= 0.51f,
|
||
"FloatToColorComponent did something weird");
|
||
|
||
aOpacity = value;
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseColorOpacity(float& aOpacity)
|
||
{
|
||
if (!GetToken(true)) {
|
||
REPORT_UNEXPECTED_EOF(PEColorOpacityEOF);
|
||
return false;
|
||
}
|
||
|
||
if (mToken.mType != eCSSToken_Number) {
|
||
REPORT_UNEXPECTED_TOKEN(PEExpectedNumber);
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
|
||
if (!ExpectSymbol(')', true)) {
|
||
REPORT_UNEXPECTED_TOKEN(PEExpectedCloseParen);
|
||
return false;
|
||
}
|
||
|
||
if (mToken.mNumber < 0.0f) {
|
||
mToken.mNumber = 0.0f;
|
||
} else if (mToken.mNumber > 1.0f) {
|
||
mToken.mNumber = 1.0f;
|
||
}
|
||
|
||
aOpacity = mToken.mNumber;
|
||
return true;
|
||
}
|
||
|
||
#ifdef MOZ_XUL
|
||
bool
|
||
CSSParserImpl::ParseTreePseudoElement(nsAtomList **aPseudoElementArgs)
|
||
{
|
||
// The argument to a tree pseudo-element is a sequence of identifiers
|
||
// that are either space- or comma-separated. (Was the intent to
|
||
// allow only comma-separated? That's not what was done.)
|
||
nsCSSSelector fakeSelector; // so we can reuse AddPseudoClass
|
||
|
||
while (!ExpectSymbol(')', true)) {
|
||
if (!GetToken(true)) {
|
||
return false;
|
||
}
|
||
if (eCSSToken_Ident == mToken.mType) {
|
||
fakeSelector.AddClass(mToken.mIdent);
|
||
}
|
||
else if (!mToken.IsSymbol(',')) {
|
||
UngetToken();
|
||
SkipUntil(')');
|
||
return false;
|
||
}
|
||
}
|
||
*aPseudoElementArgs = fakeSelector.mClassList;
|
||
fakeSelector.mClassList = nullptr;
|
||
return true;
|
||
}
|
||
#endif
|
||
|
||
//----------------------------------------------------------------------
|
||
|
||
bool
|
||
CSSParserImpl::ParseDeclaration(css::Declaration* aDeclaration,
|
||
uint32_t aFlags,
|
||
bool aMustCallValueAppended,
|
||
bool* aChanged,
|
||
nsCSSContextType aContext)
|
||
{
|
||
NS_PRECONDITION(aContext == eCSSContext_General ||
|
||
aContext == eCSSContext_Page,
|
||
"Must be page or general context");
|
||
|
||
bool checkForBraces = (aFlags & eParseDeclaration_InBraces) != 0;
|
||
|
||
mTempData.AssertInitialState();
|
||
|
||
// Get property name
|
||
nsCSSToken* tk = &mToken;
|
||
nsAutoString propertyName;
|
||
for (;;) {
|
||
if (!GetToken(true)) {
|
||
if (checkForBraces) {
|
||
REPORT_UNEXPECTED_EOF(PEDeclEndEOF);
|
||
}
|
||
return false;
|
||
}
|
||
if (eCSSToken_Ident == tk->mType) {
|
||
propertyName = tk->mIdent;
|
||
// grab the ident before the ExpectSymbol trashes the token
|
||
if (!ExpectSymbol(':', true)) {
|
||
REPORT_UNEXPECTED_TOKEN(PEParseDeclarationNoColon);
|
||
REPORT_UNEXPECTED(PEDeclDropped);
|
||
OUTPUT_ERROR();
|
||
return false;
|
||
}
|
||
break;
|
||
}
|
||
if (tk->IsSymbol(';')) {
|
||
// dangling semicolons are skipped
|
||
continue;
|
||
}
|
||
|
||
if (!tk->IsSymbol('}')) {
|
||
REPORT_UNEXPECTED_TOKEN(PEParseDeclarationDeclExpected);
|
||
REPORT_UNEXPECTED(PEDeclSkipped);
|
||
OUTPUT_ERROR();
|
||
|
||
if (eCSSToken_AtKeyword == tk->mType) {
|
||
SkipAtRule(checkForBraces);
|
||
return true; // Not a declaration, but don’t skip until ';'
|
||
}
|
||
}
|
||
// Not a declaration...
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
|
||
// Don't report property parse errors if we're inside a failing @supports
|
||
// rule.
|
||
nsAutoSuppressErrors suppressErrors(this, mInFailingSupportsRule);
|
||
|
||
// Information about a parsed non-custom property.
|
||
nsCSSProperty propID;
|
||
|
||
// Information about a parsed custom property.
|
||
CSSVariableDeclarations::Type variableType;
|
||
nsString variableValue;
|
||
|
||
// Check if the property name is a custom property.
|
||
bool customProperty = nsLayoutUtils::CSSVariablesEnabled() &&
|
||
nsCSSProps::IsCustomPropertyName(propertyName) &&
|
||
aContext == eCSSContext_General;
|
||
|
||
if (customProperty) {
|
||
if (!ParseVariableDeclaration(&variableType, variableValue)) {
|
||
REPORT_UNEXPECTED_P(PEValueParsingError, propertyName);
|
||
REPORT_UNEXPECTED(PEDeclDropped);
|
||
OUTPUT_ERROR();
|
||
return false;
|
||
}
|
||
} else {
|
||
// Map property name to its ID.
|
||
propID = nsCSSProps::LookupProperty(propertyName, nsCSSProps::eEnabled);
|
||
if (eCSSProperty_UNKNOWN == propID ||
|
||
(aContext == eCSSContext_Page &&
|
||
!nsCSSProps::PropHasFlags(propID,
|
||
CSS_PROPERTY_APPLIES_TO_PAGE_RULE))) { // unknown property
|
||
if (!NonMozillaVendorIdentifier(propertyName)) {
|
||
REPORT_UNEXPECTED_P(PEUnknownProperty, propertyName);
|
||
REPORT_UNEXPECTED(PEDeclDropped);
|
||
OUTPUT_ERROR();
|
||
}
|
||
return false;
|
||
}
|
||
// Then parse the property.
|
||
if (!ParseProperty(propID)) {
|
||
// XXX Much better to put stuff in the value parsers instead...
|
||
REPORT_UNEXPECTED_P(PEValueParsingError, propertyName);
|
||
REPORT_UNEXPECTED(PEDeclDropped);
|
||
OUTPUT_ERROR();
|
||
mTempData.ClearProperty(propID);
|
||
mTempData.AssertInitialState();
|
||
return false;
|
||
}
|
||
}
|
||
|
||
CLEAR_ERROR();
|
||
|
||
// Look for "!important".
|
||
PriorityParsingStatus status;
|
||
if ((aFlags & eParseDeclaration_AllowImportant) != 0) {
|
||
status = ParsePriority();
|
||
} else {
|
||
status = ePriority_None;
|
||
}
|
||
|
||
// Look for a semicolon or close brace.
|
||
if (status != ePriority_Error) {
|
||
if (!GetToken(true)) {
|
||
// EOF is always ok
|
||
} else if (mToken.IsSymbol(';')) {
|
||
// semicolon is always ok
|
||
} else if (mToken.IsSymbol('}')) {
|
||
// brace is ok if checkForBraces, but don't eat it
|
||
UngetToken();
|
||
if (!checkForBraces) {
|
||
status = ePriority_Error;
|
||
}
|
||
} else {
|
||
UngetToken();
|
||
status = ePriority_Error;
|
||
}
|
||
}
|
||
|
||
if (status == ePriority_Error) {
|
||
if (checkForBraces) {
|
||
REPORT_UNEXPECTED_TOKEN(PEBadDeclOrRuleEnd2);
|
||
} else {
|
||
REPORT_UNEXPECTED_TOKEN(PEBadDeclEnd);
|
||
}
|
||
REPORT_UNEXPECTED(PEDeclDropped);
|
||
OUTPUT_ERROR();
|
||
if (!customProperty) {
|
||
mTempData.ClearProperty(propID);
|
||
}
|
||
mTempData.AssertInitialState();
|
||
return false;
|
||
}
|
||
|
||
if (customProperty) {
|
||
MOZ_ASSERT(Substring(propertyName,
|
||
0, VAR_PREFIX_LENGTH).EqualsLiteral("var-"));
|
||
nsDependentString varName(propertyName, VAR_PREFIX_LENGTH); // remove 'var-'
|
||
aDeclaration->AddVariableDeclaration(varName, variableType, variableValue,
|
||
status == ePriority_Important, false);
|
||
} else {
|
||
*aChanged |= mData.TransferFromBlock(mTempData, propID,
|
||
status == ePriority_Important,
|
||
false, aMustCallValueAppended,
|
||
aDeclaration);
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
static const nsCSSProperty kBorderTopIDs[] = {
|
||
eCSSProperty_border_top_width,
|
||
eCSSProperty_border_top_style,
|
||
eCSSProperty_border_top_color
|
||
};
|
||
static const nsCSSProperty kBorderRightIDs[] = {
|
||
eCSSProperty_border_right_width_value,
|
||
eCSSProperty_border_right_style_value,
|
||
eCSSProperty_border_right_color_value,
|
||
eCSSProperty_border_right_width,
|
||
eCSSProperty_border_right_style,
|
||
eCSSProperty_border_right_color
|
||
};
|
||
static const nsCSSProperty kBorderBottomIDs[] = {
|
||
eCSSProperty_border_bottom_width,
|
||
eCSSProperty_border_bottom_style,
|
||
eCSSProperty_border_bottom_color
|
||
};
|
||
static const nsCSSProperty kBorderLeftIDs[] = {
|
||
eCSSProperty_border_left_width_value,
|
||
eCSSProperty_border_left_style_value,
|
||
eCSSProperty_border_left_color_value,
|
||
eCSSProperty_border_left_width,
|
||
eCSSProperty_border_left_style,
|
||
eCSSProperty_border_left_color
|
||
};
|
||
static const nsCSSProperty kBorderStartIDs[] = {
|
||
eCSSProperty_border_start_width_value,
|
||
eCSSProperty_border_start_style_value,
|
||
eCSSProperty_border_start_color_value,
|
||
eCSSProperty_border_start_width,
|
||
eCSSProperty_border_start_style,
|
||
eCSSProperty_border_start_color
|
||
};
|
||
static const nsCSSProperty kBorderEndIDs[] = {
|
||
eCSSProperty_border_end_width_value,
|
||
eCSSProperty_border_end_style_value,
|
||
eCSSProperty_border_end_color_value,
|
||
eCSSProperty_border_end_width,
|
||
eCSSProperty_border_end_style,
|
||
eCSSProperty_border_end_color
|
||
};
|
||
static const nsCSSProperty kColumnRuleIDs[] = {
|
||
eCSSProperty__moz_column_rule_width,
|
||
eCSSProperty__moz_column_rule_style,
|
||
eCSSProperty__moz_column_rule_color
|
||
};
|
||
|
||
bool
|
||
CSSParserImpl::ParseEnum(nsCSSValue& aValue,
|
||
const int32_t aKeywordTable[])
|
||
{
|
||
nsSubstring* ident = NextIdent();
|
||
if (nullptr == ident) {
|
||
return false;
|
||
}
|
||
nsCSSKeyword keyword = nsCSSKeywords::LookupKeyword(*ident);
|
||
if (eCSSKeyword_UNKNOWN < keyword) {
|
||
int32_t value;
|
||
if (nsCSSProps::FindKeyword(keyword, aKeywordTable, value)) {
|
||
aValue.SetIntValue(value, eCSSUnit_Enumerated);
|
||
return true;
|
||
}
|
||
}
|
||
|
||
// Put the unknown identifier back and return
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
|
||
|
||
struct UnitInfo {
|
||
char name[6]; // needs to be long enough for the longest unit, with
|
||
// terminating null.
|
||
uint32_t length;
|
||
nsCSSUnit unit;
|
||
int32_t type;
|
||
};
|
||
|
||
#define STR_WITH_LEN(_str) \
|
||
_str, sizeof(_str) - 1
|
||
|
||
const UnitInfo UnitData[] = {
|
||
{ STR_WITH_LEN("px"), eCSSUnit_Pixel, VARIANT_LENGTH },
|
||
{ STR_WITH_LEN("em"), eCSSUnit_EM, VARIANT_LENGTH },
|
||
{ STR_WITH_LEN("ex"), eCSSUnit_XHeight, VARIANT_LENGTH },
|
||
{ STR_WITH_LEN("pt"), eCSSUnit_Point, VARIANT_LENGTH },
|
||
{ STR_WITH_LEN("in"), eCSSUnit_Inch, VARIANT_LENGTH },
|
||
{ STR_WITH_LEN("cm"), eCSSUnit_Centimeter, VARIANT_LENGTH },
|
||
{ STR_WITH_LEN("ch"), eCSSUnit_Char, VARIANT_LENGTH },
|
||
{ STR_WITH_LEN("rem"), eCSSUnit_RootEM, VARIANT_LENGTH },
|
||
{ STR_WITH_LEN("mm"), eCSSUnit_Millimeter, VARIANT_LENGTH },
|
||
{ STR_WITH_LEN("mozmm"), eCSSUnit_PhysicalMillimeter, VARIANT_LENGTH },
|
||
{ STR_WITH_LEN("vw"), eCSSUnit_ViewportWidth, VARIANT_LENGTH },
|
||
{ STR_WITH_LEN("vh"), eCSSUnit_ViewportHeight, VARIANT_LENGTH },
|
||
{ STR_WITH_LEN("vmin"), eCSSUnit_ViewportMin, VARIANT_LENGTH },
|
||
{ STR_WITH_LEN("vmax"), eCSSUnit_ViewportMax, VARIANT_LENGTH },
|
||
{ STR_WITH_LEN("pc"), eCSSUnit_Pica, VARIANT_LENGTH },
|
||
{ STR_WITH_LEN("deg"), eCSSUnit_Degree, VARIANT_ANGLE },
|
||
{ STR_WITH_LEN("grad"), eCSSUnit_Grad, VARIANT_ANGLE },
|
||
{ STR_WITH_LEN("rad"), eCSSUnit_Radian, VARIANT_ANGLE },
|
||
{ STR_WITH_LEN("turn"), eCSSUnit_Turn, VARIANT_ANGLE },
|
||
{ STR_WITH_LEN("hz"), eCSSUnit_Hertz, VARIANT_FREQUENCY },
|
||
{ STR_WITH_LEN("khz"), eCSSUnit_Kilohertz, VARIANT_FREQUENCY },
|
||
{ STR_WITH_LEN("s"), eCSSUnit_Seconds, VARIANT_TIME },
|
||
{ STR_WITH_LEN("ms"), eCSSUnit_Milliseconds, VARIANT_TIME }
|
||
};
|
||
|
||
#undef STR_WITH_LEN
|
||
|
||
bool
|
||
CSSParserImpl::TranslateDimension(nsCSSValue& aValue,
|
||
int32_t aVariantMask,
|
||
float aNumber,
|
||
const nsString& aUnit)
|
||
{
|
||
nsCSSUnit units;
|
||
int32_t type = 0;
|
||
if (!aUnit.IsEmpty()) {
|
||
uint32_t i;
|
||
for (i = 0; i < ArrayLength(UnitData); ++i) {
|
||
if (aUnit.LowerCaseEqualsASCII(UnitData[i].name,
|
||
UnitData[i].length)) {
|
||
units = UnitData[i].unit;
|
||
type = UnitData[i].type;
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (!mViewportUnitsEnabled &&
|
||
(eCSSUnit_ViewportWidth == units ||
|
||
eCSSUnit_ViewportHeight == units ||
|
||
eCSSUnit_ViewportMin == units ||
|
||
eCSSUnit_ViewportMax == units)) {
|
||
// Viewport units aren't allowed right now, probably because we're
|
||
// inside an @page declaration. Fail.
|
||
return false;
|
||
}
|
||
|
||
if (i == ArrayLength(UnitData)) {
|
||
// Unknown unit
|
||
return false;
|
||
}
|
||
} else {
|
||
// Must be a zero number...
|
||
NS_ASSERTION(0 == aNumber, "numbers without units must be 0");
|
||
if ((VARIANT_LENGTH & aVariantMask) != 0) {
|
||
units = eCSSUnit_Pixel;
|
||
type = VARIANT_LENGTH;
|
||
}
|
||
else if ((VARIANT_ANGLE & aVariantMask) != 0) {
|
||
NS_ASSERTION(aVariantMask & VARIANT_ZERO_ANGLE,
|
||
"must have allowed zero angle");
|
||
units = eCSSUnit_Degree;
|
||
type = VARIANT_ANGLE;
|
||
}
|
||
else {
|
||
NS_ERROR("Variant mask does not include dimension; why were we called?");
|
||
return false;
|
||
}
|
||
}
|
||
if ((type & aVariantMask) != 0) {
|
||
aValue.SetFloatValue(aNumber, units);
|
||
return true;
|
||
}
|
||
return false;
|
||
}
|
||
|
||
// Note that this does include VARIANT_CALC, which is numeric. This is
|
||
// because calc() parsing, as proposed, drops range restrictions inside
|
||
// the calc() expression and clamps the result of the calculation to the
|
||
// range.
|
||
#define VARIANT_ALL_NONNUMERIC \
|
||
VARIANT_KEYWORD | \
|
||
VARIANT_COLOR | \
|
||
VARIANT_URL | \
|
||
VARIANT_STRING | \
|
||
VARIANT_COUNTER | \
|
||
VARIANT_ATTR | \
|
||
VARIANT_IDENTIFIER | \
|
||
VARIANT_IDENTIFIER_NO_INHERIT | \
|
||
VARIANT_AUTO | \
|
||
VARIANT_INHERIT | \
|
||
VARIANT_NONE | \
|
||
VARIANT_NORMAL | \
|
||
VARIANT_SYSFONT | \
|
||
VARIANT_GRADIENT | \
|
||
VARIANT_TIMING_FUNCTION | \
|
||
VARIANT_ALL | \
|
||
VARIANT_CALC | \
|
||
VARIANT_OPENTYPE_SVG_KEYWORD
|
||
|
||
// Note that callers passing VARIANT_CALC in aVariantMask will get
|
||
// full-range parsing inside the calc() expression, and the code that
|
||
// computes the calc will be required to clamp the resulting value to an
|
||
// appropriate range.
|
||
bool
|
||
CSSParserImpl::ParseNonNegativeVariant(nsCSSValue& aValue,
|
||
int32_t aVariantMask,
|
||
const int32_t aKeywordTable[])
|
||
{
|
||
// The variant mask must only contain non-numeric variants or the ones
|
||
// that we specifically handle.
|
||
NS_ABORT_IF_FALSE((aVariantMask & ~(VARIANT_ALL_NONNUMERIC |
|
||
VARIANT_NUMBER |
|
||
VARIANT_LENGTH |
|
||
VARIANT_PERCENT |
|
||
VARIANT_INTEGER)) == 0,
|
||
"need to update code below to handle additional variants");
|
||
|
||
if (ParseVariant(aValue, aVariantMask, aKeywordTable)) {
|
||
if (eCSSUnit_Number == aValue.GetUnit() ||
|
||
aValue.IsLengthUnit()){
|
||
if (aValue.GetFloatValue() < 0) {
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
}
|
||
else if (aValue.GetUnit() == eCSSUnit_Percent) {
|
||
if (aValue.GetPercentValue() < 0) {
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
} else if (aValue.GetUnit() == eCSSUnit_Integer) {
|
||
if (aValue.GetIntValue() < 0) {
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
}
|
||
return true;
|
||
}
|
||
return false;
|
||
}
|
||
|
||
// Note that callers passing VARIANT_CALC in aVariantMask will get
|
||
// full-range parsing inside the calc() expression, and the code that
|
||
// computes the calc will be required to clamp the resulting value to an
|
||
// appropriate range.
|
||
bool
|
||
CSSParserImpl::ParseOneOrLargerVariant(nsCSSValue& aValue,
|
||
int32_t aVariantMask,
|
||
const int32_t aKeywordTable[])
|
||
{
|
||
// The variant mask must only contain non-numeric variants or the ones
|
||
// that we specifically handle.
|
||
NS_ABORT_IF_FALSE((aVariantMask & ~(VARIANT_ALL_NONNUMERIC |
|
||
VARIANT_NUMBER |
|
||
VARIANT_INTEGER)) == 0,
|
||
"need to update code below to handle additional variants");
|
||
|
||
if (ParseVariant(aValue, aVariantMask, aKeywordTable)) {
|
||
if (aValue.GetUnit() == eCSSUnit_Integer) {
|
||
if (aValue.GetIntValue() < 1) {
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
} else if (eCSSUnit_Number == aValue.GetUnit()) {
|
||
if (aValue.GetFloatValue() < 1.0f) {
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
}
|
||
return true;
|
||
}
|
||
return false;
|
||
}
|
||
|
||
// Assigns to aValue iff it returns true.
|
||
bool
|
||
CSSParserImpl::ParseVariant(nsCSSValue& aValue,
|
||
int32_t aVariantMask,
|
||
const int32_t aKeywordTable[])
|
||
{
|
||
NS_ASSERTION(!(mHashlessColorQuirk && (aVariantMask & VARIANT_COLOR)) ||
|
||
!(aVariantMask & VARIANT_NUMBER),
|
||
"can't distinguish colors from numbers");
|
||
NS_ASSERTION(!(mHashlessColorQuirk && (aVariantMask & VARIANT_COLOR)) ||
|
||
!(mUnitlessLengthQuirk && (aVariantMask & VARIANT_LENGTH)),
|
||
"can't distinguish colors from lengths");
|
||
NS_ASSERTION(!(mUnitlessLengthQuirk && (aVariantMask & VARIANT_LENGTH)) ||
|
||
!(aVariantMask & VARIANT_NUMBER),
|
||
"can't distinguish lengths from numbers");
|
||
NS_ABORT_IF_FALSE(!(aVariantMask & VARIANT_IDENTIFIER) ||
|
||
!(aVariantMask & VARIANT_IDENTIFIER_NO_INHERIT),
|
||
"must not set both VARIANT_IDENTIFIER and "
|
||
"VARIANT_IDENTIFIER_NO_INHERIT");
|
||
|
||
if (!GetToken(true)) {
|
||
return false;
|
||
}
|
||
nsCSSToken* tk = &mToken;
|
||
if (((aVariantMask & (VARIANT_AHK | VARIANT_NORMAL | VARIANT_NONE | VARIANT_ALL)) != 0) &&
|
||
(eCSSToken_Ident == tk->mType)) {
|
||
nsCSSKeyword keyword = nsCSSKeywords::LookupKeyword(tk->mIdent);
|
||
if (eCSSKeyword_UNKNOWN < keyword) { // known keyword
|
||
if ((aVariantMask & VARIANT_AUTO) != 0) {
|
||
if (eCSSKeyword_auto == keyword) {
|
||
aValue.SetAutoValue();
|
||
return true;
|
||
}
|
||
}
|
||
if ((aVariantMask & VARIANT_INHERIT) != 0) {
|
||
// XXX Should we check IsParsingCompoundProperty, or do all
|
||
// callers handle it? (Not all callers set it, though, since
|
||
// they want the quirks that are disabled by setting it.)
|
||
if (eCSSKeyword_inherit == keyword) {
|
||
aValue.SetInheritValue();
|
||
return true;
|
||
}
|
||
else if (eCSSKeyword_initial == keyword) {
|
||
aValue.SetInitialValue();
|
||
return true;
|
||
}
|
||
else if (eCSSKeyword_unset == keyword &&
|
||
nsLayoutUtils::UnsetValueEnabled()) {
|
||
aValue.SetUnsetValue();
|
||
return true;
|
||
}
|
||
}
|
||
if ((aVariantMask & VARIANT_NONE) != 0) {
|
||
if (eCSSKeyword_none == keyword) {
|
||
aValue.SetNoneValue();
|
||
return true;
|
||
}
|
||
}
|
||
if ((aVariantMask & VARIANT_ALL) != 0) {
|
||
if (eCSSKeyword_all == keyword) {
|
||
aValue.SetAllValue();
|
||
return true;
|
||
}
|
||
}
|
||
if ((aVariantMask & VARIANT_NORMAL) != 0) {
|
||
if (eCSSKeyword_normal == keyword) {
|
||
aValue.SetNormalValue();
|
||
return true;
|
||
}
|
||
}
|
||
if ((aVariantMask & VARIANT_SYSFONT) != 0) {
|
||
if (eCSSKeyword__moz_use_system_font == keyword &&
|
||
!IsParsingCompoundProperty()) {
|
||
aValue.SetSystemFontValue();
|
||
return true;
|
||
}
|
||
}
|
||
if ((aVariantMask & VARIANT_OPENTYPE_SVG_KEYWORD) != 0) {
|
||
static bool sOpentypeSVGEnabled;
|
||
static bool sOpentypeSVGEnabledCached = false;
|
||
if (!sOpentypeSVGEnabledCached) {
|
||
sOpentypeSVGEnabledCached = true;
|
||
Preferences::AddBoolVarCache(&sOpentypeSVGEnabled,
|
||
"gfx.font_rendering.opentype_svg.enabled");
|
||
}
|
||
if (sOpentypeSVGEnabled) {
|
||
aVariantMask |= VARIANT_KEYWORD;
|
||
}
|
||
}
|
||
if ((aVariantMask & VARIANT_KEYWORD) != 0) {
|
||
int32_t value;
|
||
if (nsCSSProps::FindKeyword(keyword, aKeywordTable, value)) {
|
||
aValue.SetIntValue(value, eCSSUnit_Enumerated);
|
||
return true;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
// Check VARIANT_NUMBER and VARIANT_INTEGER before VARIANT_LENGTH or
|
||
// VARIANT_ZERO_ANGLE.
|
||
if (((aVariantMask & VARIANT_NUMBER) != 0) &&
|
||
(eCSSToken_Number == tk->mType)) {
|
||
aValue.SetFloatValue(tk->mNumber, eCSSUnit_Number);
|
||
return true;
|
||
}
|
||
if (((aVariantMask & VARIANT_INTEGER) != 0) &&
|
||
(eCSSToken_Number == tk->mType) && tk->mIntegerValid) {
|
||
aValue.SetIntValue(tk->mInteger, eCSSUnit_Integer);
|
||
return true;
|
||
}
|
||
if (((aVariantMask & (VARIANT_LENGTH | VARIANT_ANGLE |
|
||
VARIANT_FREQUENCY | VARIANT_TIME)) != 0 &&
|
||
eCSSToken_Dimension == tk->mType) ||
|
||
((aVariantMask & (VARIANT_LENGTH | VARIANT_ZERO_ANGLE)) != 0 &&
|
||
eCSSToken_Number == tk->mType &&
|
||
tk->mNumber == 0.0f)) {
|
||
if (((aVariantMask & VARIANT_POSITIVE_DIMENSION) != 0 &&
|
||
tk->mNumber <= 0.0) ||
|
||
((aVariantMask & VARIANT_NONNEGATIVE_DIMENSION) != 0 &&
|
||
tk->mNumber < 0.0)) {
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
if (TranslateDimension(aValue, aVariantMask, tk->mNumber, tk->mIdent)) {
|
||
return true;
|
||
}
|
||
// Put the token back; we didn't parse it, so we shouldn't consume it
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
if (((aVariantMask & VARIANT_PERCENT) != 0) &&
|
||
(eCSSToken_Percentage == tk->mType)) {
|
||
aValue.SetPercentValue(tk->mNumber);
|
||
return true;
|
||
}
|
||
if (mUnitlessLengthQuirk) { // NONSTANDARD: Nav interprets unitless numbers as px
|
||
if (((aVariantMask & VARIANT_LENGTH) != 0) &&
|
||
(eCSSToken_Number == tk->mType)) {
|
||
aValue.SetFloatValue(tk->mNumber, eCSSUnit_Pixel);
|
||
return true;
|
||
}
|
||
}
|
||
|
||
if (IsSVGMode() && !IsParsingCompoundProperty()) {
|
||
// STANDARD: SVG Spec states that lengths and coordinates can be unitless
|
||
// in which case they default to user-units (1 px = 1 user unit)
|
||
if (((aVariantMask & VARIANT_LENGTH) != 0) &&
|
||
(eCSSToken_Number == tk->mType)) {
|
||
aValue.SetFloatValue(tk->mNumber, eCSSUnit_Pixel);
|
||
return true;
|
||
}
|
||
}
|
||
|
||
if (((aVariantMask & VARIANT_URL) != 0) &&
|
||
eCSSToken_URL == tk->mType) {
|
||
SetValueToURL(aValue, tk->mIdent);
|
||
return true;
|
||
}
|
||
if ((aVariantMask & VARIANT_GRADIENT) != 0 &&
|
||
eCSSToken_Function == tk->mType) {
|
||
// a generated gradient
|
||
nsDependentString tmp(tk->mIdent, 0);
|
||
bool isLegacy = false;
|
||
if (StringBeginsWith(tmp, NS_LITERAL_STRING("-moz-"))) {
|
||
tmp.Rebind(tmp, 5);
|
||
isLegacy = true;
|
||
}
|
||
bool isRepeating = false;
|
||
if (StringBeginsWith(tmp, NS_LITERAL_STRING("repeating-"))) {
|
||
tmp.Rebind(tmp, 10);
|
||
isRepeating = true;
|
||
}
|
||
|
||
if (tmp.LowerCaseEqualsLiteral("linear-gradient")) {
|
||
return ParseLinearGradient(aValue, isRepeating, isLegacy);
|
||
}
|
||
if (tmp.LowerCaseEqualsLiteral("radial-gradient")) {
|
||
return ParseRadialGradient(aValue, isRepeating, isLegacy);
|
||
}
|
||
}
|
||
if ((aVariantMask & VARIANT_IMAGE_RECT) != 0 &&
|
||
eCSSToken_Function == tk->mType &&
|
||
tk->mIdent.LowerCaseEqualsLiteral("-moz-image-rect")) {
|
||
return ParseImageRect(aValue);
|
||
}
|
||
if ((aVariantMask & VARIANT_ELEMENT) != 0 &&
|
||
eCSSToken_Function == tk->mType &&
|
||
tk->mIdent.LowerCaseEqualsLiteral("-moz-element")) {
|
||
return ParseElement(aValue);
|
||
}
|
||
if ((aVariantMask & VARIANT_COLOR) != 0) {
|
||
if (mHashlessColorQuirk || // NONSTANDARD: Nav interprets 'xxyyzz' values even without '#' prefix
|
||
(eCSSToken_ID == tk->mType) ||
|
||
(eCSSToken_Hash == tk->mType) ||
|
||
(eCSSToken_Ident == tk->mType) ||
|
||
((eCSSToken_Function == tk->mType) &&
|
||
(tk->mIdent.LowerCaseEqualsLiteral("rgb") ||
|
||
tk->mIdent.LowerCaseEqualsLiteral("hsl") ||
|
||
tk->mIdent.LowerCaseEqualsLiteral("rgba") ||
|
||
tk->mIdent.LowerCaseEqualsLiteral("hsla"))))
|
||
{
|
||
// Put token back so that parse color can get it
|
||
UngetToken();
|
||
if (ParseColor(aValue)) {
|
||
return true;
|
||
}
|
||
return false;
|
||
}
|
||
}
|
||
if (((aVariantMask & VARIANT_STRING) != 0) &&
|
||
(eCSSToken_String == tk->mType)) {
|
||
nsAutoString buffer;
|
||
buffer.Append(tk->mIdent);
|
||
aValue.SetStringValue(buffer, eCSSUnit_String);
|
||
return true;
|
||
}
|
||
if (((aVariantMask &
|
||
(VARIANT_IDENTIFIER | VARIANT_IDENTIFIER_NO_INHERIT)) != 0) &&
|
||
(eCSSToken_Ident == tk->mType) &&
|
||
((aVariantMask & VARIANT_IDENTIFIER) != 0 ||
|
||
!(tk->mIdent.LowerCaseEqualsLiteral("inherit") ||
|
||
tk->mIdent.LowerCaseEqualsLiteral("initial") ||
|
||
(tk->mIdent.LowerCaseEqualsLiteral("unset") &&
|
||
nsLayoutUtils::UnsetValueEnabled())))) {
|
||
aValue.SetStringValue(tk->mIdent, eCSSUnit_Ident);
|
||
return true;
|
||
}
|
||
if (((aVariantMask & VARIANT_COUNTER) != 0) &&
|
||
(eCSSToken_Function == tk->mType) &&
|
||
(tk->mIdent.LowerCaseEqualsLiteral("counter") ||
|
||
tk->mIdent.LowerCaseEqualsLiteral("counters"))) {
|
||
return ParseCounter(aValue);
|
||
}
|
||
if (((aVariantMask & VARIANT_ATTR) != 0) &&
|
||
(eCSSToken_Function == tk->mType) &&
|
||
tk->mIdent.LowerCaseEqualsLiteral("attr")) {
|
||
if (!ParseAttr(aValue)) {
|
||
SkipUntil(')');
|
||
return false;
|
||
}
|
||
return true;
|
||
}
|
||
if (((aVariantMask & VARIANT_TIMING_FUNCTION) != 0) &&
|
||
(eCSSToken_Function == tk->mType)) {
|
||
if (tk->mIdent.LowerCaseEqualsLiteral("cubic-bezier")) {
|
||
if (!ParseTransitionTimingFunctionValues(aValue)) {
|
||
SkipUntil(')');
|
||
return false;
|
||
}
|
||
return true;
|
||
}
|
||
if (tk->mIdent.LowerCaseEqualsLiteral("steps")) {
|
||
if (!ParseTransitionStepTimingFunctionValues(aValue)) {
|
||
SkipUntil(')');
|
||
return false;
|
||
}
|
||
return true;
|
||
}
|
||
}
|
||
if ((aVariantMask & VARIANT_CALC) &&
|
||
(eCSSToken_Function == tk->mType) &&
|
||
(tk->mIdent.LowerCaseEqualsLiteral("calc") ||
|
||
tk->mIdent.LowerCaseEqualsLiteral("-moz-calc"))) {
|
||
// calc() currently allows only lengths and percents inside it.
|
||
return ParseCalc(aValue, aVariantMask & VARIANT_LP);
|
||
}
|
||
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
|
||
|
||
bool
|
||
CSSParserImpl::ParseCounter(nsCSSValue& aValue)
|
||
{
|
||
nsCSSUnit unit = (mToken.mIdent.LowerCaseEqualsLiteral("counter") ?
|
||
eCSSUnit_Counter : eCSSUnit_Counters);
|
||
|
||
// A non-iterative for loop to break out when an error occurs.
|
||
for (;;) {
|
||
if (!GetToken(true)) {
|
||
break;
|
||
}
|
||
if (eCSSToken_Ident != mToken.mType) {
|
||
UngetToken();
|
||
break;
|
||
}
|
||
|
||
nsRefPtr<nsCSSValue::Array> val =
|
||
nsCSSValue::Array::Create(unit == eCSSUnit_Counter ? 2 : 3);
|
||
|
||
val->Item(0).SetStringValue(mToken.mIdent, eCSSUnit_Ident);
|
||
|
||
if (eCSSUnit_Counters == unit) {
|
||
// must have a comma and then a separator string
|
||
if (!ExpectSymbol(',', true) || !GetToken(true)) {
|
||
break;
|
||
}
|
||
if (eCSSToken_String != mToken.mType) {
|
||
UngetToken();
|
||
break;
|
||
}
|
||
val->Item(1).SetStringValue(mToken.mIdent, eCSSUnit_String);
|
||
}
|
||
|
||
// get optional type
|
||
int32_t type = NS_STYLE_LIST_STYLE_DECIMAL;
|
||
if (ExpectSymbol(',', true)) {
|
||
if (!GetToken(true)) {
|
||
break;
|
||
}
|
||
nsCSSKeyword keyword;
|
||
if (eCSSToken_Ident != mToken.mType ||
|
||
(keyword = nsCSSKeywords::LookupKeyword(mToken.mIdent)) ==
|
||
eCSSKeyword_UNKNOWN ||
|
||
!nsCSSProps::FindKeyword(keyword, nsCSSProps::kListStyleKTable,
|
||
type)) {
|
||
UngetToken();
|
||
break;
|
||
}
|
||
}
|
||
|
||
int32_t typeItem = eCSSUnit_Counters == unit ? 2 : 1;
|
||
val->Item(typeItem).SetIntValue(type, eCSSUnit_Enumerated);
|
||
|
||
if (!ExpectSymbol(')', true)) {
|
||
break;
|
||
}
|
||
|
||
aValue.SetArrayValue(val, unit);
|
||
return true;
|
||
}
|
||
|
||
SkipUntil(')');
|
||
return false;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseAttr(nsCSSValue& aValue)
|
||
{
|
||
if (!GetToken(true)) {
|
||
return false;
|
||
}
|
||
|
||
nsAutoString attr;
|
||
if (eCSSToken_Ident == mToken.mType) { // attr name or namespace
|
||
nsAutoString holdIdent(mToken.mIdent);
|
||
if (ExpectSymbol('|', false)) { // namespace
|
||
int32_t nameSpaceID = GetNamespaceIdForPrefix(holdIdent);
|
||
if (nameSpaceID == kNameSpaceID_Unknown) {
|
||
return false;
|
||
}
|
||
attr.AppendInt(nameSpaceID, 10);
|
||
attr.Append(char16_t('|'));
|
||
if (! GetToken(false)) {
|
||
REPORT_UNEXPECTED_EOF(PEAttributeNameEOF);
|
||
return false;
|
||
}
|
||
if (eCSSToken_Ident == mToken.mType) {
|
||
attr.Append(mToken.mIdent);
|
||
}
|
||
else {
|
||
REPORT_UNEXPECTED_TOKEN(PEAttributeNameExpected);
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
}
|
||
else { // no namespace
|
||
attr = holdIdent;
|
||
}
|
||
}
|
||
else if (mToken.IsSymbol('*')) { // namespace wildcard
|
||
// Wildcard namespace makes no sense here and is not allowed
|
||
REPORT_UNEXPECTED_TOKEN(PEAttributeNameExpected);
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
else if (mToken.IsSymbol('|')) { // explicit NO namespace
|
||
if (! GetToken(false)) {
|
||
REPORT_UNEXPECTED_EOF(PEAttributeNameEOF);
|
||
return false;
|
||
}
|
||
if (eCSSToken_Ident == mToken.mType) {
|
||
attr.Append(mToken.mIdent);
|
||
}
|
||
else {
|
||
REPORT_UNEXPECTED_TOKEN(PEAttributeNameExpected);
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
}
|
||
else {
|
||
REPORT_UNEXPECTED_TOKEN(PEAttributeNameOrNamespaceExpected);
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
if (!ExpectSymbol(')', true)) {
|
||
return false;
|
||
}
|
||
aValue.SetStringValue(attr, eCSSUnit_Attr);
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::SetValueToURL(nsCSSValue& aValue, const nsString& aURL)
|
||
{
|
||
if (!mSheetPrincipal) {
|
||
NS_NOTREACHED("Codepaths that expect to parse URLs MUST pass in an "
|
||
"origin principal");
|
||
return false;
|
||
}
|
||
|
||
nsRefPtr<nsStringBuffer> buffer(nsCSSValue::BufferFromString(aURL));
|
||
|
||
// Note: urlVal retains its own reference to |buffer|.
|
||
mozilla::css::URLValue *urlVal =
|
||
new mozilla::css::URLValue(buffer, mBaseURI, mSheetURI, mSheetPrincipal);
|
||
aValue.SetURLValue(urlVal);
|
||
return true;
|
||
}
|
||
|
||
/**
|
||
* Parse the image-orientation property, which has the grammar:
|
||
* <angle> flip? | flip | from-image
|
||
*/
|
||
bool
|
||
CSSParserImpl::ParseImageOrientation(nsCSSValue& aValue)
|
||
{
|
||
if (ParseVariant(aValue, VARIANT_INHERIT, nullptr)) {
|
||
// 'inherit', 'initial' and 'unset' must be alone
|
||
return true;
|
||
}
|
||
|
||
// Check for an angle with optional 'flip'.
|
||
nsCSSValue angle;
|
||
if (ParseVariant(angle, VARIANT_ANGLE, nullptr)) {
|
||
nsCSSValue flip;
|
||
|
||
if (ParseVariant(flip, VARIANT_KEYWORD, nsCSSProps::kImageOrientationFlipKTable)) {
|
||
nsRefPtr<nsCSSValue::Array> array = nsCSSValue::Array::Create(2);
|
||
array->Item(0) = angle;
|
||
array->Item(1) = flip;
|
||
aValue.SetArrayValue(array, eCSSUnit_Array);
|
||
} else {
|
||
aValue = angle;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
// The remaining possibilities (bare 'flip' and 'from-image') are both
|
||
// keywords, so we can handle them at the same time.
|
||
nsCSSValue keyword;
|
||
if (ParseVariant(keyword, VARIANT_KEYWORD, nsCSSProps::kImageOrientationKTable)) {
|
||
aValue = keyword;
|
||
return true;
|
||
}
|
||
|
||
// All possibilities failed.
|
||
return false;
|
||
}
|
||
|
||
/**
|
||
* Parse the arguments of -moz-image-rect() function.
|
||
* -moz-image-rect(<uri>, <top>, <right>, <bottom>, <left>)
|
||
*/
|
||
bool
|
||
CSSParserImpl::ParseImageRect(nsCSSValue& aImage)
|
||
{
|
||
// A non-iterative for loop to break out when an error occurs.
|
||
for (;;) {
|
||
nsCSSValue newFunction;
|
||
static const uint32_t kNumArgs = 5;
|
||
nsCSSValue::Array* func =
|
||
newFunction.InitFunction(eCSSKeyword__moz_image_rect, kNumArgs);
|
||
|
||
// func->Item(0) is reserved for the function name.
|
||
nsCSSValue& url = func->Item(1);
|
||
nsCSSValue& top = func->Item(2);
|
||
nsCSSValue& right = func->Item(3);
|
||
nsCSSValue& bottom = func->Item(4);
|
||
nsCSSValue& left = func->Item(5);
|
||
|
||
nsAutoString urlString;
|
||
if (!ParseURLOrString(urlString) ||
|
||
!SetValueToURL(url, urlString) ||
|
||
!ExpectSymbol(',', true)) {
|
||
break;
|
||
}
|
||
|
||
static const int32_t VARIANT_SIDE = VARIANT_NUMBER | VARIANT_PERCENT;
|
||
if (!ParseNonNegativeVariant(top, VARIANT_SIDE, nullptr) ||
|
||
!ExpectSymbol(',', true) ||
|
||
!ParseNonNegativeVariant(right, VARIANT_SIDE, nullptr) ||
|
||
!ExpectSymbol(',', true) ||
|
||
!ParseNonNegativeVariant(bottom, VARIANT_SIDE, nullptr) ||
|
||
!ExpectSymbol(',', true) ||
|
||
!ParseNonNegativeVariant(left, VARIANT_SIDE, nullptr) ||
|
||
!ExpectSymbol(')', true))
|
||
break;
|
||
|
||
aImage = newFunction;
|
||
return true;
|
||
}
|
||
|
||
SkipUntil(')');
|
||
return false;
|
||
}
|
||
|
||
// <element>: -moz-element(# <element_id> )
|
||
bool
|
||
CSSParserImpl::ParseElement(nsCSSValue& aValue)
|
||
{
|
||
// A non-iterative for loop to break out when an error occurs.
|
||
for (;;) {
|
||
if (!GetToken(true))
|
||
break;
|
||
|
||
if (mToken.mType == eCSSToken_ID) {
|
||
aValue.SetStringValue(mToken.mIdent, eCSSUnit_Element);
|
||
} else {
|
||
UngetToken();
|
||
break;
|
||
}
|
||
|
||
if (!ExpectSymbol(')', true))
|
||
break;
|
||
|
||
return true;
|
||
}
|
||
|
||
// If we detect a syntax error, we must match the opening parenthesis of the
|
||
// function with the closing parenthesis and skip all the tokens in between.
|
||
SkipUntil(')');
|
||
return false;
|
||
}
|
||
|
||
// flex: none | [ <'flex-grow'> <'flex-shrink'>? || <'flex-basis'> ]
|
||
bool
|
||
CSSParserImpl::ParseFlex()
|
||
{
|
||
// First check for inherit / initial / unset
|
||
nsCSSValue tmpVal;
|
||
if (ParseVariant(tmpVal, VARIANT_INHERIT, nullptr)) {
|
||
AppendValue(eCSSProperty_flex_grow, tmpVal);
|
||
AppendValue(eCSSProperty_flex_shrink, tmpVal);
|
||
AppendValue(eCSSProperty_flex_basis, tmpVal);
|
||
return true;
|
||
}
|
||
|
||
// Next, check for 'none' == '0 0 auto'
|
||
if (ParseVariant(tmpVal, VARIANT_NONE, nullptr)) {
|
||
AppendValue(eCSSProperty_flex_grow, nsCSSValue(0.0f, eCSSUnit_Number));
|
||
AppendValue(eCSSProperty_flex_shrink, nsCSSValue(0.0f, eCSSUnit_Number));
|
||
AppendValue(eCSSProperty_flex_basis, nsCSSValue(eCSSUnit_Auto));
|
||
return true;
|
||
}
|
||
|
||
// OK, try parsing our value as individual per-subproperty components:
|
||
// [ <'flex-grow'> <'flex-shrink'>? || <'flex-basis'> ]
|
||
|
||
// Each subproperty has a default value that it takes when it's omitted in a
|
||
// "flex" shorthand value. These default values are *only* for the shorthand
|
||
// syntax -- they're distinct from the subproperties' own initial values. We
|
||
// start with each subproperty at its default, as if we had "flex: 1 1 0%".
|
||
nsCSSValue flexGrow(1.0f, eCSSUnit_Number);
|
||
nsCSSValue flexShrink(1.0f, eCSSUnit_Number);
|
||
nsCSSValue flexBasis(0.0f, eCSSUnit_Percent);
|
||
|
||
// OVERVIEW OF PARSING STRATEGY:
|
||
// =============================
|
||
// a) Parse the first component as either flex-basis or flex-grow.
|
||
// b) If it wasn't flex-grow, parse the _next_ component as flex-grow.
|
||
// c) Now we've just parsed flex-grow -- so try parsing the next thing as
|
||
// flex-shrink.
|
||
// d) Finally: If we didn't get flex-basis at the beginning, try to parse
|
||
// it now, at the end.
|
||
//
|
||
// More details in each section below.
|
||
|
||
uint32_t flexBasisVariantMask =
|
||
(nsCSSProps::ParserVariant(eCSSProperty_flex_basis) & ~(VARIANT_INHERIT));
|
||
|
||
// (a) Parse first component. It can be either be a 'flex-basis' value or a
|
||
// 'flex-grow' value, so we use the flex-basis-specific variant mask, along
|
||
// with VARIANT_NUMBER to accept 'flex-grow' values.
|
||
//
|
||
// NOTE: if we encounter unitless 0 here, we *must* interpret it as a
|
||
// 'flex-grow' value (a number), *not* as a 'flex-basis' value (a length).
|
||
// Conveniently, that's the behavior this combined variant-mask gives us --
|
||
// it'll treat unitless 0 as a number. The flexbox spec requires this:
|
||
// "a unitless zero that is not already preceded by two flex factors must be
|
||
// interpreted as a flex factor.
|
||
if (!ParseNonNegativeVariant(tmpVal, flexBasisVariantMask | VARIANT_NUMBER,
|
||
nsCSSProps::kWidthKTable)) {
|
||
// First component was not a valid flex-basis or flex-grow value. Fail.
|
||
return false;
|
||
}
|
||
|
||
// Record what we just parsed as either flex-basis or flex-grow:
|
||
bool wasFirstComponentFlexBasis = (tmpVal.GetUnit() != eCSSUnit_Number);
|
||
(wasFirstComponentFlexBasis ? flexBasis : flexGrow) = tmpVal;
|
||
|
||
// (b) If we didn't get flex-grow yet, parse _next_ component as flex-grow.
|
||
bool doneParsing = false;
|
||
if (wasFirstComponentFlexBasis) {
|
||
if (ParseNonNegativeVariant(tmpVal, VARIANT_NUMBER, nullptr)) {
|
||
flexGrow = tmpVal;
|
||
} else {
|
||
// Failed to parse anything after our flex-basis -- that's fine. We can
|
||
// skip the remaining parsing.
|
||
doneParsing = true;
|
||
}
|
||
}
|
||
|
||
if (!doneParsing) {
|
||
// (c) OK -- the last thing we parsed was flex-grow, so look for a
|
||
// flex-shrink in the next position.
|
||
if (ParseNonNegativeVariant(tmpVal, VARIANT_NUMBER, nullptr)) {
|
||
flexShrink = tmpVal;
|
||
}
|
||
|
||
// d) Finally: If we didn't get flex-basis at the beginning, try to parse
|
||
// it now, at the end.
|
||
//
|
||
// NOTE: If we encounter unitless 0 in this final position, we'll parse it
|
||
// as a 'flex-basis' value. That's OK, because we know it must have
|
||
// been "preceded by 2 flex factors" (justification below), which gets us
|
||
// out of the spec's requirement of otherwise having to treat unitless 0
|
||
// as a flex factor.
|
||
//
|
||
// JUSTIFICATION: How do we know that a unitless 0 here must have been
|
||
// preceded by 2 flex factors? Well, suppose we had a unitless 0 that
|
||
// was preceded by only 1 flex factor. Then, we would have already
|
||
// accepted this unitless 0 as the 'flex-shrink' value, up above (since
|
||
// it's a valid flex-shrink value), and we'd have moved on to the next
|
||
// token (if any). And of course, if we instead had a unitless 0 preceded
|
||
// by *no* flex factors (if it were the first token), we would've already
|
||
// parsed it in our very first call to ParseNonNegativeVariant(). So, any
|
||
// unitless 0 encountered here *must* have been preceded by 2 flex factors.
|
||
if (!wasFirstComponentFlexBasis &&
|
||
ParseNonNegativeVariant(tmpVal, flexBasisVariantMask,
|
||
nsCSSProps::kWidthKTable)) {
|
||
flexBasis = tmpVal;
|
||
}
|
||
}
|
||
|
||
AppendValue(eCSSProperty_flex_grow, flexGrow);
|
||
AppendValue(eCSSProperty_flex_shrink, flexShrink);
|
||
AppendValue(eCSSProperty_flex_basis, flexBasis);
|
||
|
||
return true;
|
||
}
|
||
|
||
// flex-flow: <flex-direction> || <flex-wrap>
|
||
bool
|
||
CSSParserImpl::ParseFlexFlow()
|
||
{
|
||
static const nsCSSProperty kFlexFlowSubprops[] = {
|
||
eCSSProperty_flex_direction,
|
||
eCSSProperty_flex_wrap
|
||
};
|
||
const size_t numProps = NS_ARRAY_LENGTH(kFlexFlowSubprops);
|
||
nsCSSValue values[numProps];
|
||
|
||
int32_t found = ParseChoice(values, kFlexFlowSubprops, numProps);
|
||
|
||
// Bail if we didn't successfully parse anything, or if there's trailing junk.
|
||
if (found < 1 || !ExpectEndProperty()) {
|
||
return false;
|
||
}
|
||
|
||
// If either property didn't get an explicit value, use its initial value.
|
||
if ((found & 1) == 0) {
|
||
values[0].SetIntValue(NS_STYLE_FLEX_DIRECTION_ROW, eCSSUnit_Enumerated);
|
||
}
|
||
if ((found & 2) == 0) {
|
||
values[1].SetIntValue(NS_STYLE_FLEX_WRAP_NOWRAP, eCSSUnit_Enumerated);
|
||
}
|
||
|
||
// Store these values and declare success!
|
||
for (size_t i = 0; i < numProps; i++) {
|
||
AppendValue(kFlexFlowSubprops[i], values[i]);
|
||
}
|
||
return true;
|
||
}
|
||
|
||
// <color-stop> : <color> [ <percentage> | <length> ]?
|
||
bool
|
||
CSSParserImpl::ParseColorStop(nsCSSValueGradient* aGradient)
|
||
{
|
||
nsCSSValueGradientStop* stop = aGradient->mStops.AppendElement();
|
||
if (!ParseVariant(stop->mColor, VARIANT_COLOR, nullptr)) {
|
||
return false;
|
||
}
|
||
|
||
// Stop positions do not have to fall between the starting-point and
|
||
// ending-point, so we don't use ParseNonNegativeVariant.
|
||
if (!ParseVariant(stop->mLocation, VARIANT_LP | VARIANT_CALC, nullptr)) {
|
||
stop->mLocation.SetNoneValue();
|
||
}
|
||
return true;
|
||
}
|
||
|
||
// <gradient>
|
||
// : linear-gradient( <linear-gradient-line>? <color-stops> ')'
|
||
// | radial-gradient( <radial-gradient-line>? <color-stops> ')'
|
||
//
|
||
// <linear-gradient-line> : [ to [left | right] || [top | bottom] ] ,
|
||
// | <legacy-gradient-line>
|
||
// <radial-gradient-line> : [ <shape> || <size> ] [ at <position> ]? ,
|
||
// | [ at <position> ] ,
|
||
// | <legacy-gradient-line>? <legacy-shape-size>?
|
||
// <shape> : circle | ellipse
|
||
// <size> : closest-side | closest-corner | farthest-side | farthest-corner
|
||
// | <length> | [<length> | <percentage>]{2}
|
||
//
|
||
// <legacy-gradient-line> : [ <position> || <angle>] ,
|
||
//
|
||
// <legacy-shape-size> : [ <shape> || <legacy-size> ] ,
|
||
// <legacy-size> : closest-side | closest-corner | farthest-side
|
||
// | farthest-corner | contain | cover
|
||
//
|
||
// <color-stops> : <color-stop> , <color-stop> [, <color-stop>]*
|
||
bool
|
||
CSSParserImpl::ParseLinearGradient(nsCSSValue& aValue, bool aIsRepeating,
|
||
bool aIsLegacy)
|
||
{
|
||
nsRefPtr<nsCSSValueGradient> cssGradient
|
||
= new nsCSSValueGradient(false, aIsRepeating);
|
||
|
||
if (!GetToken(true)) {
|
||
return false;
|
||
}
|
||
|
||
if (mToken.mType == eCSSToken_Ident &&
|
||
mToken.mIdent.LowerCaseEqualsLiteral("to")) {
|
||
|
||
// "to" syntax doesn't allow explicit "center"
|
||
if (!ParseBoxPositionValues(cssGradient->mBgPos, false, false)) {
|
||
SkipUntil(')');
|
||
return false;
|
||
}
|
||
|
||
// [ to [left | right] || [top | bottom] ] ,
|
||
const nsCSSValue& xValue = cssGradient->mBgPos.mXValue;
|
||
const nsCSSValue& yValue = cssGradient->mBgPos.mYValue;
|
||
if (xValue.GetUnit() != eCSSUnit_Enumerated ||
|
||
!(xValue.GetIntValue() & (NS_STYLE_BG_POSITION_LEFT |
|
||
NS_STYLE_BG_POSITION_CENTER |
|
||
NS_STYLE_BG_POSITION_RIGHT)) ||
|
||
yValue.GetUnit() != eCSSUnit_Enumerated ||
|
||
!(yValue.GetIntValue() & (NS_STYLE_BG_POSITION_TOP |
|
||
NS_STYLE_BG_POSITION_CENTER |
|
||
NS_STYLE_BG_POSITION_BOTTOM))) {
|
||
SkipUntil(')');
|
||
return false;
|
||
}
|
||
|
||
if (!ExpectSymbol(',', true)) {
|
||
SkipUntil(')');
|
||
return false;
|
||
}
|
||
|
||
return ParseGradientColorStops(cssGradient, aValue);
|
||
}
|
||
|
||
if (!aIsLegacy) {
|
||
UngetToken();
|
||
|
||
// <angle> ,
|
||
if (ParseVariant(cssGradient->mAngle, VARIANT_ANGLE, nullptr) &&
|
||
!ExpectSymbol(',', true)) {
|
||
SkipUntil(')');
|
||
return false;
|
||
}
|
||
|
||
return ParseGradientColorStops(cssGradient, aValue);
|
||
}
|
||
|
||
nsCSSTokenType ty = mToken.mType;
|
||
nsString id = mToken.mIdent;
|
||
UngetToken();
|
||
|
||
// <legacy-gradient-line>
|
||
bool haveGradientLine = IsLegacyGradientLine(ty, id);
|
||
if (haveGradientLine) {
|
||
cssGradient->mIsLegacySyntax = true;
|
||
bool haveAngle =
|
||
ParseVariant(cssGradient->mAngle, VARIANT_ANGLE, nullptr);
|
||
|
||
// if we got an angle, we might now have a comma, ending the gradient-line
|
||
if (!haveAngle || !ExpectSymbol(',', true)) {
|
||
if (!ParseBoxPositionValues(cssGradient->mBgPos, false)) {
|
||
SkipUntil(')');
|
||
return false;
|
||
}
|
||
|
||
if (!ExpectSymbol(',', true) &&
|
||
// if we didn't already get an angle, we might have one now,
|
||
// otherwise it's an error
|
||
(haveAngle ||
|
||
!ParseVariant(cssGradient->mAngle, VARIANT_ANGLE, nullptr) ||
|
||
// now we better have a comma
|
||
!ExpectSymbol(',', true))) {
|
||
SkipUntil(')');
|
||
return false;
|
||
}
|
||
}
|
||
}
|
||
|
||
return ParseGradientColorStops(cssGradient, aValue);
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseRadialGradient(nsCSSValue& aValue, bool aIsRepeating,
|
||
bool aIsLegacy)
|
||
{
|
||
nsRefPtr<nsCSSValueGradient> cssGradient
|
||
= new nsCSSValueGradient(true, aIsRepeating);
|
||
|
||
// [ <shape> || <size> ]
|
||
bool haveShape =
|
||
ParseVariant(cssGradient->GetRadialShape(), VARIANT_KEYWORD,
|
||
nsCSSProps::kRadialGradientShapeKTable);
|
||
|
||
bool haveSize = ParseVariant(cssGradient->GetRadialSize(), VARIANT_KEYWORD,
|
||
aIsLegacy ?
|
||
nsCSSProps::kRadialGradientLegacySizeKTable :
|
||
nsCSSProps::kRadialGradientSizeKTable);
|
||
if (haveSize) {
|
||
if (!haveShape) {
|
||
// <size> <shape>
|
||
haveShape = ParseVariant(cssGradient->GetRadialShape(), VARIANT_KEYWORD,
|
||
nsCSSProps::kRadialGradientShapeKTable);
|
||
}
|
||
} else if (!aIsLegacy) {
|
||
// Save RadialShape before parsing RadiusX because RadialShape and
|
||
// RadiusX share the storage.
|
||
int32_t shape =
|
||
cssGradient->GetRadialShape().GetUnit() == eCSSUnit_Enumerated ?
|
||
cssGradient->GetRadialShape().GetIntValue() : -1;
|
||
// <length> | [<length> | <percentage>]{2}
|
||
cssGradient->mIsExplicitSize = true;
|
||
haveSize =
|
||
ParseNonNegativeVariant(cssGradient->GetRadiusX(), VARIANT_LP, nullptr);
|
||
if (!haveSize) {
|
||
// It was not an explicit size after all.
|
||
// Note that ParseNonNegativeVariant may have put something
|
||
// invalid into our storage, but only in the case where it was
|
||
// rejected only for being negative. Since this means the token
|
||
// was a length or a percentage, we know it's not valid syntax
|
||
// (which must be a comma, the 'at' keyword, or a color), so we
|
||
// know this value will be dropped. This means it doesn't matter
|
||
// that we have something invalid in our storage.
|
||
cssGradient->mIsExplicitSize = false;
|
||
} else {
|
||
// vertical extent is optional
|
||
bool haveYSize =
|
||
ParseNonNegativeVariant(cssGradient->GetRadiusY(), VARIANT_LP, nullptr);
|
||
if (!haveShape) {
|
||
nsCSSValue shapeValue;
|
||
haveShape = ParseVariant(shapeValue, VARIANT_KEYWORD,
|
||
nsCSSProps::kRadialGradientShapeKTable);
|
||
if (haveShape) {
|
||
shape = shapeValue.GetIntValue();
|
||
}
|
||
}
|
||
if (haveYSize
|
||
? shape == NS_STYLE_GRADIENT_SHAPE_CIRCULAR
|
||
: cssGradient->GetRadiusX().GetUnit() == eCSSUnit_Percent ||
|
||
shape == NS_STYLE_GRADIENT_SHAPE_ELLIPTICAL) {
|
||
SkipUntil(')');
|
||
return false;
|
||
}
|
||
}
|
||
}
|
||
|
||
if ((haveShape || haveSize) && ExpectSymbol(',', true)) {
|
||
// [ <shape> || <size> ] ,
|
||
return ParseGradientColorStops(cssGradient, aValue);
|
||
}
|
||
|
||
if (!GetToken(true)) {
|
||
return false;
|
||
}
|
||
|
||
if (!aIsLegacy) {
|
||
if (mToken.mType == eCSSToken_Ident &&
|
||
mToken.mIdent.LowerCaseEqualsLiteral("at")) {
|
||
// [ <shape> || <size> ]? at <position> ,
|
||
if (!ParseBoxPositionValues(cssGradient->mBgPos, false) ||
|
||
!ExpectSymbol(',', true)) {
|
||
SkipUntil(')');
|
||
return false;
|
||
}
|
||
|
||
return ParseGradientColorStops(cssGradient, aValue);
|
||
}
|
||
|
||
// <color-stops> only
|
||
UngetToken();
|
||
return ParseGradientColorStops(cssGradient, aValue);
|
||
}
|
||
MOZ_ASSERT(!cssGradient->mIsExplicitSize);
|
||
|
||
nsCSSTokenType ty = mToken.mType;
|
||
nsString id = mToken.mIdent;
|
||
UngetToken();
|
||
|
||
// <legacy-gradient-line>
|
||
bool haveGradientLine = false;
|
||
// if we already encountered a shape or size,
|
||
// we can not have a gradient-line in legacy syntax
|
||
if (!haveShape && !haveSize) {
|
||
haveGradientLine = IsLegacyGradientLine(ty, id);
|
||
}
|
||
if (haveGradientLine) {
|
||
bool haveAngle =
|
||
ParseVariant(cssGradient->mAngle, VARIANT_ANGLE, nullptr);
|
||
|
||
// if we got an angle, we might now have a comma, ending the gradient-line
|
||
if (!haveAngle || !ExpectSymbol(',', true)) {
|
||
if (!ParseBoxPositionValues(cssGradient->mBgPos, false)) {
|
||
SkipUntil(')');
|
||
return false;
|
||
}
|
||
|
||
if (!ExpectSymbol(',', true) &&
|
||
// if we didn't already get an angle, we might have one now,
|
||
// otherwise it's an error
|
||
(haveAngle ||
|
||
!ParseVariant(cssGradient->mAngle, VARIANT_ANGLE, nullptr) ||
|
||
// now we better have a comma
|
||
!ExpectSymbol(',', true))) {
|
||
SkipUntil(')');
|
||
return false;
|
||
}
|
||
}
|
||
|
||
if (cssGradient->mAngle.GetUnit() != eCSSUnit_None) {
|
||
cssGradient->mIsLegacySyntax = true;
|
||
}
|
||
}
|
||
|
||
// radial gradients might have a shape and size here for legacy syntax
|
||
if (!haveShape && !haveSize) {
|
||
haveShape =
|
||
ParseVariant(cssGradient->GetRadialShape(), VARIANT_KEYWORD,
|
||
nsCSSProps::kRadialGradientShapeKTable);
|
||
haveSize =
|
||
ParseVariant(cssGradient->GetRadialSize(), VARIANT_KEYWORD,
|
||
nsCSSProps::kRadialGradientLegacySizeKTable);
|
||
|
||
// could be in either order
|
||
if (!haveShape) {
|
||
haveShape =
|
||
ParseVariant(cssGradient->GetRadialShape(), VARIANT_KEYWORD,
|
||
nsCSSProps::kRadialGradientShapeKTable);
|
||
}
|
||
}
|
||
|
||
if ((haveShape || haveSize) && !ExpectSymbol(',', true)) {
|
||
SkipUntil(')');
|
||
return false;
|
||
}
|
||
|
||
return ParseGradientColorStops(cssGradient, aValue);
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::IsLegacyGradientLine(const nsCSSTokenType& aType,
|
||
const nsString& aId)
|
||
{
|
||
// N.B. ParseBoxPositionValues is not guaranteed to put back
|
||
// everything it scanned if it fails, so we must only call it
|
||
// if there is no alternative to consuming a <box-position>.
|
||
// ParseVariant, as used here, will either succeed and consume
|
||
// a single token, or fail and consume none, so we can be more
|
||
// cavalier about calling it.
|
||
|
||
bool haveGradientLine = false;
|
||
switch (aType) {
|
||
case eCSSToken_Percentage:
|
||
case eCSSToken_Number:
|
||
case eCSSToken_Dimension:
|
||
haveGradientLine = true;
|
||
break;
|
||
|
||
case eCSSToken_Function:
|
||
if (aId.LowerCaseEqualsLiteral("calc") ||
|
||
aId.LowerCaseEqualsLiteral("-moz-calc")) {
|
||
haveGradientLine = true;
|
||
break;
|
||
}
|
||
// fall through
|
||
case eCSSToken_ID:
|
||
case eCSSToken_Hash:
|
||
// this is a color
|
||
break;
|
||
|
||
case eCSSToken_Ident: {
|
||
// This is only a gradient line if it's a box position keyword.
|
||
nsCSSKeyword kw = nsCSSKeywords::LookupKeyword(aId);
|
||
int32_t junk;
|
||
if (kw != eCSSKeyword_UNKNOWN &&
|
||
nsCSSProps::FindKeyword(kw, nsCSSProps::kBackgroundPositionKTable,
|
||
junk)) {
|
||
haveGradientLine = true;
|
||
}
|
||
break;
|
||
}
|
||
|
||
default:
|
||
// error
|
||
break;
|
||
}
|
||
|
||
return haveGradientLine;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseGradientColorStops(nsCSSValueGradient* aGradient,
|
||
nsCSSValue& aValue)
|
||
{
|
||
// At least two color stops are required
|
||
if (!ParseColorStop(aGradient) ||
|
||
!ExpectSymbol(',', true) ||
|
||
!ParseColorStop(aGradient)) {
|
||
SkipUntil(')');
|
||
return false;
|
||
}
|
||
|
||
// Additional color stops
|
||
while (ExpectSymbol(',', true)) {
|
||
if (!ParseColorStop(aGradient)) {
|
||
SkipUntil(')');
|
||
return false;
|
||
}
|
||
}
|
||
|
||
if (!ExpectSymbol(')', true)) {
|
||
SkipUntil(')');
|
||
return false;
|
||
}
|
||
|
||
aValue.SetGradientValue(aGradient);
|
||
return true;
|
||
}
|
||
|
||
int32_t
|
||
CSSParserImpl::ParseChoice(nsCSSValue aValues[],
|
||
const nsCSSProperty aPropIDs[], int32_t aNumIDs)
|
||
{
|
||
int32_t found = 0;
|
||
nsAutoParseCompoundProperty compound(this);
|
||
|
||
int32_t loop;
|
||
for (loop = 0; loop < aNumIDs; loop++) {
|
||
// Try each property parser in order
|
||
int32_t hadFound = found;
|
||
int32_t index;
|
||
for (index = 0; index < aNumIDs; index++) {
|
||
int32_t bit = 1 << index;
|
||
if ((found & bit) == 0) {
|
||
if (ParseSingleValueProperty(aValues[index], aPropIDs[index])) {
|
||
found |= bit;
|
||
// It's more efficient to break since it will reset |hadFound|
|
||
// to |found|. Furthermore, ParseListStyle depends on our going
|
||
// through the properties in order for each value..
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
if (found == hadFound) { // found nothing new
|
||
break;
|
||
}
|
||
}
|
||
if (0 < found) {
|
||
if (1 == found) { // only first property
|
||
if (eCSSUnit_Inherit == aValues[0].GetUnit()) { // one inherit, all inherit
|
||
for (loop = 1; loop < aNumIDs; loop++) {
|
||
aValues[loop].SetInheritValue();
|
||
}
|
||
found = ((1 << aNumIDs) - 1);
|
||
}
|
||
else if (eCSSUnit_Initial == aValues[0].GetUnit()) { // one initial, all initial
|
||
for (loop = 1; loop < aNumIDs; loop++) {
|
||
aValues[loop].SetInitialValue();
|
||
}
|
||
found = ((1 << aNumIDs) - 1);
|
||
}
|
||
else if (eCSSUnit_Unset == aValues[0].GetUnit()) { // one unset, all unset
|
||
for (loop = 1; loop < aNumIDs; loop++) {
|
||
aValues[loop].SetUnsetValue();
|
||
}
|
||
found = ((1 << aNumIDs) - 1);
|
||
}
|
||
}
|
||
else { // more than one value, verify no inherits, initials or unsets
|
||
for (loop = 0; loop < aNumIDs; loop++) {
|
||
if (eCSSUnit_Inherit == aValues[loop].GetUnit()) {
|
||
found = -1;
|
||
break;
|
||
}
|
||
else if (eCSSUnit_Initial == aValues[loop].GetUnit()) {
|
||
found = -1;
|
||
break;
|
||
}
|
||
else if (eCSSUnit_Unset == aValues[loop].GetUnit()) {
|
||
found = -1;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
return found;
|
||
}
|
||
|
||
void
|
||
CSSParserImpl::AppendValue(nsCSSProperty aPropID, const nsCSSValue& aValue)
|
||
{
|
||
mTempData.AddLonghandProperty(aPropID, aValue);
|
||
}
|
||
|
||
/**
|
||
* Parse a "box" property. Box properties have 1 to 4 values. When less
|
||
* than 4 values are provided a standard mapping is used to replicate
|
||
* existing values.
|
||
*/
|
||
bool
|
||
CSSParserImpl::ParseBoxProperties(const nsCSSProperty aPropIDs[])
|
||
{
|
||
// Get up to four values for the property
|
||
int32_t count = 0;
|
||
nsCSSRect result;
|
||
NS_FOR_CSS_SIDES (index) {
|
||
if (! ParseSingleValueProperty(result.*(nsCSSRect::sides[index]),
|
||
aPropIDs[index])) {
|
||
break;
|
||
}
|
||
count++;
|
||
}
|
||
if ((count == 0) || (false == ExpectEndProperty())) {
|
||
return false;
|
||
}
|
||
|
||
if (1 < count) { // verify no more than single inherit, initial or unset
|
||
NS_FOR_CSS_SIDES (index) {
|
||
nsCSSUnit unit = (result.*(nsCSSRect::sides[index])).GetUnit();
|
||
if (eCSSUnit_Inherit == unit ||
|
||
eCSSUnit_Initial == unit ||
|
||
eCSSUnit_Unset == unit) {
|
||
return false;
|
||
}
|
||
}
|
||
}
|
||
|
||
// Provide missing values by replicating some of the values found
|
||
switch (count) {
|
||
case 1: // Make right == top
|
||
result.mRight = result.mTop;
|
||
case 2: // Make bottom == top
|
||
result.mBottom = result.mTop;
|
||
case 3: // Make left == right
|
||
result.mLeft = result.mRight;
|
||
}
|
||
|
||
NS_FOR_CSS_SIDES (index) {
|
||
AppendValue(aPropIDs[index], result.*(nsCSSRect::sides[index]));
|
||
}
|
||
return true;
|
||
}
|
||
|
||
// Similar to ParseBoxProperties, except there is only one property
|
||
// with the result as its value, not four. Requires values be nonnegative.
|
||
bool
|
||
CSSParserImpl::ParseGroupedBoxProperty(int32_t aVariantMask,
|
||
/** outparam */ nsCSSValue& aValue)
|
||
{
|
||
nsCSSRect& result = aValue.SetRectValue();
|
||
|
||
int32_t count = 0;
|
||
NS_FOR_CSS_SIDES (index) {
|
||
if (!ParseNonNegativeVariant(result.*(nsCSSRect::sides[index]),
|
||
aVariantMask, nullptr)) {
|
||
break;
|
||
}
|
||
count++;
|
||
}
|
||
|
||
if (count == 0) {
|
||
return false;
|
||
}
|
||
|
||
// Provide missing values by replicating some of the values found
|
||
switch (count) {
|
||
case 1: // Make right == top
|
||
result.mRight = result.mTop;
|
||
case 2: // Make bottom == top
|
||
result.mBottom = result.mTop;
|
||
case 3: // Make left == right
|
||
result.mLeft = result.mRight;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseDirectionalBoxProperty(nsCSSProperty aProperty,
|
||
int32_t aSourceType)
|
||
{
|
||
const nsCSSProperty* subprops = nsCSSProps::SubpropertyEntryFor(aProperty);
|
||
NS_ASSERTION(subprops[3] == eCSSProperty_UNKNOWN,
|
||
"not box property with physical vs. logical cascading");
|
||
nsCSSValue value;
|
||
if (!ParseSingleValueProperty(value, subprops[0]) ||
|
||
!ExpectEndProperty())
|
||
return false;
|
||
|
||
AppendValue(subprops[0], value);
|
||
nsCSSValue typeVal(aSourceType, eCSSUnit_Enumerated);
|
||
AppendValue(subprops[1], typeVal);
|
||
AppendValue(subprops[2], typeVal);
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseBoxCornerRadius(nsCSSProperty aPropID)
|
||
{
|
||
nsCSSValue dimenX, dimenY;
|
||
// required first value
|
||
if (! ParseNonNegativeVariant(dimenX, VARIANT_HLP | VARIANT_CALC, nullptr))
|
||
return false;
|
||
|
||
// optional second value (forbidden if first value is inherit/initial/unset)
|
||
if (dimenX.GetUnit() != eCSSUnit_Inherit &&
|
||
dimenX.GetUnit() != eCSSUnit_Initial &&
|
||
dimenX.GetUnit() != eCSSUnit_Unset) {
|
||
ParseNonNegativeVariant(dimenY, VARIANT_LP | VARIANT_CALC, nullptr);
|
||
}
|
||
|
||
if (dimenX == dimenY || dimenY.GetUnit() == eCSSUnit_Null) {
|
||
AppendValue(aPropID, dimenX);
|
||
} else {
|
||
nsCSSValue value;
|
||
value.SetPairValue(dimenX, dimenY);
|
||
AppendValue(aPropID, value);
|
||
}
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseBoxCornerRadii(const nsCSSProperty aPropIDs[])
|
||
{
|
||
// Rectangles are used as scratch storage.
|
||
// top => top-left, right => top-right,
|
||
// bottom => bottom-right, left => bottom-left.
|
||
nsCSSRect dimenX, dimenY;
|
||
int32_t countX = 0, countY = 0;
|
||
|
||
NS_FOR_CSS_SIDES (side) {
|
||
if (! ParseNonNegativeVariant(dimenX.*nsCSSRect::sides[side],
|
||
(side > 0 ? 0 : VARIANT_INHERIT) |
|
||
VARIANT_LP | VARIANT_CALC,
|
||
nullptr))
|
||
break;
|
||
countX++;
|
||
}
|
||
if (countX == 0)
|
||
return false;
|
||
|
||
if (ExpectSymbol('/', true)) {
|
||
NS_FOR_CSS_SIDES (side) {
|
||
if (! ParseNonNegativeVariant(dimenY.*nsCSSRect::sides[side],
|
||
VARIANT_LP | VARIANT_CALC, nullptr))
|
||
break;
|
||
countY++;
|
||
}
|
||
if (countY == 0)
|
||
return false;
|
||
}
|
||
if (!ExpectEndProperty())
|
||
return false;
|
||
|
||
// if 'initial', 'inherit' or 'unset' was used, it must be the only value
|
||
if (countX > 1 || countY > 0) {
|
||
nsCSSUnit unit = dimenX.mTop.GetUnit();
|
||
if (eCSSUnit_Inherit == unit ||
|
||
eCSSUnit_Initial == unit ||
|
||
eCSSUnit_Unset == unit)
|
||
return false;
|
||
}
|
||
|
||
// if we have no Y-values, use the X-values
|
||
if (countY == 0) {
|
||
dimenY = dimenX;
|
||
countY = countX;
|
||
}
|
||
|
||
// Provide missing values by replicating some of the values found
|
||
switch (countX) {
|
||
case 1: dimenX.mRight = dimenX.mTop; // top-right same as top-left, and
|
||
case 2: dimenX.mBottom = dimenX.mTop; // bottom-right same as top-left, and
|
||
case 3: dimenX.mLeft = dimenX.mRight; // bottom-left same as top-right
|
||
}
|
||
|
||
switch (countY) {
|
||
case 1: dimenY.mRight = dimenY.mTop; // top-right same as top-left, and
|
||
case 2: dimenY.mBottom = dimenY.mTop; // bottom-right same as top-left, and
|
||
case 3: dimenY.mLeft = dimenY.mRight; // bottom-left same as top-right
|
||
}
|
||
|
||
NS_FOR_CSS_SIDES(side) {
|
||
nsCSSValue& x = dimenX.*nsCSSRect::sides[side];
|
||
nsCSSValue& y = dimenY.*nsCSSRect::sides[side];
|
||
|
||
if (x == y) {
|
||
AppendValue(aPropIDs[side], x);
|
||
} else {
|
||
nsCSSValue pair;
|
||
pair.SetPairValue(x, y);
|
||
AppendValue(aPropIDs[side], pair);
|
||
}
|
||
}
|
||
return true;
|
||
}
|
||
|
||
// These must be in CSS order (top,right,bottom,left) for indexing to work
|
||
static const nsCSSProperty kBorderStyleIDs[] = {
|
||
eCSSProperty_border_top_style,
|
||
eCSSProperty_border_right_style_value,
|
||
eCSSProperty_border_bottom_style,
|
||
eCSSProperty_border_left_style_value
|
||
};
|
||
static const nsCSSProperty kBorderWidthIDs[] = {
|
||
eCSSProperty_border_top_width,
|
||
eCSSProperty_border_right_width_value,
|
||
eCSSProperty_border_bottom_width,
|
||
eCSSProperty_border_left_width_value
|
||
};
|
||
static const nsCSSProperty kBorderColorIDs[] = {
|
||
eCSSProperty_border_top_color,
|
||
eCSSProperty_border_right_color_value,
|
||
eCSSProperty_border_bottom_color,
|
||
eCSSProperty_border_left_color_value
|
||
};
|
||
static const nsCSSProperty kBorderRadiusIDs[] = {
|
||
eCSSProperty_border_top_left_radius,
|
||
eCSSProperty_border_top_right_radius,
|
||
eCSSProperty_border_bottom_right_radius,
|
||
eCSSProperty_border_bottom_left_radius
|
||
};
|
||
static const nsCSSProperty kOutlineRadiusIDs[] = {
|
||
eCSSProperty__moz_outline_radius_topLeft,
|
||
eCSSProperty__moz_outline_radius_topRight,
|
||
eCSSProperty__moz_outline_radius_bottomRight,
|
||
eCSSProperty__moz_outline_radius_bottomLeft
|
||
};
|
||
|
||
void
|
||
CSSParserImpl::SaveInputState(CSSParserInputState& aState)
|
||
{
|
||
aState.mToken = mToken;
|
||
aState.mHavePushBack = mHavePushBack;
|
||
mScanner->SavePosition(aState.mPosition);
|
||
}
|
||
|
||
void
|
||
CSSParserImpl::RestoreSavedInputState(const CSSParserInputState& aState)
|
||
{
|
||
mToken = aState.mToken;
|
||
mHavePushBack = aState.mHavePushBack;
|
||
mScanner->RestoreSavedPosition(aState.mPosition);
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseProperty(nsCSSProperty aPropID)
|
||
{
|
||
// Can't use AutoRestore<bool> because it's a bitfield.
|
||
NS_ABORT_IF_FALSE(!mHashlessColorQuirk,
|
||
"hashless color quirk should not be set");
|
||
NS_ABORT_IF_FALSE(!mUnitlessLengthQuirk,
|
||
"unitless length quirk should not be set");
|
||
|
||
if (mNavQuirkMode) {
|
||
mHashlessColorQuirk =
|
||
nsCSSProps::PropHasFlags(aPropID, CSS_PROPERTY_HASHLESS_COLOR_QUIRK);
|
||
mUnitlessLengthQuirk =
|
||
nsCSSProps::PropHasFlags(aPropID, CSS_PROPERTY_UNITLESS_LENGTH_QUIRK);
|
||
}
|
||
|
||
// Save the current input state so that we can restore it later if we
|
||
// have to re-parse the property value as a variable-reference-containing
|
||
// token stream.
|
||
CSSParserInputState stateBeforeProperty;
|
||
SaveInputState(stateBeforeProperty);
|
||
mScanner->ClearSeenVariableReference();
|
||
|
||
NS_ASSERTION(aPropID < eCSSProperty_COUNT, "index out of range");
|
||
bool allowVariables = true;
|
||
bool result;
|
||
switch (nsCSSProps::PropertyParseType(aPropID)) {
|
||
case CSS_PROPERTY_PARSE_INACCESSIBLE: {
|
||
// The user can't use these
|
||
REPORT_UNEXPECTED(PEInaccessibleProperty2);
|
||
allowVariables = false;
|
||
result = false;
|
||
break;
|
||
}
|
||
case CSS_PROPERTY_PARSE_FUNCTION: {
|
||
result = ParsePropertyByFunction(aPropID);
|
||
break;
|
||
}
|
||
case CSS_PROPERTY_PARSE_VALUE: {
|
||
result = false;
|
||
nsCSSValue value;
|
||
if (ParseSingleValueProperty(value, aPropID)) {
|
||
if (ExpectEndProperty()) {
|
||
AppendValue(aPropID, value);
|
||
result = true;
|
||
}
|
||
// XXX Report errors?
|
||
}
|
||
// XXX Report errors?
|
||
break;
|
||
}
|
||
case CSS_PROPERTY_PARSE_VALUE_LIST: {
|
||
result = ParseValueList(aPropID);
|
||
break;
|
||
}
|
||
default: {
|
||
result = false;
|
||
allowVariables = false;
|
||
NS_ABORT_IF_FALSE(false,
|
||
"Property's flags field in nsCSSPropList.h is missing "
|
||
"one of the CSS_PROPERTY_PARSE_* constants");
|
||
break;
|
||
}
|
||
}
|
||
|
||
bool seenVariable = mScanner->SeenVariableReference() ||
|
||
(stateBeforeProperty.mHavePushBack &&
|
||
stateBeforeProperty.mToken.mType == eCSSToken_Function &&
|
||
stateBeforeProperty.mToken.mIdent.LowerCaseEqualsLiteral("var"));
|
||
bool parseAsTokenStream;
|
||
|
||
if (!result && allowVariables) {
|
||
parseAsTokenStream = true;
|
||
if (!seenVariable) {
|
||
// We might have stopped parsing the property before its end and before
|
||
// finding a variable reference. Keep checking until the end of the
|
||
// property.
|
||
CSSParserInputState stateAtError;
|
||
SaveInputState(stateAtError);
|
||
|
||
const char16_t stopChars[] = { ';', '!', '}', ')', 0 };
|
||
SkipUntilOneOf(stopChars);
|
||
UngetToken();
|
||
parseAsTokenStream = mScanner->SeenVariableReference();
|
||
|
||
if (!parseAsTokenStream) {
|
||
// If we parsed to the end of the propery and didn't find any variable
|
||
// references, then the real position we want to report the error at
|
||
// is |stateAtError|.
|
||
RestoreSavedInputState(stateAtError);
|
||
}
|
||
}
|
||
} else {
|
||
parseAsTokenStream = false;
|
||
}
|
||
|
||
if (parseAsTokenStream) {
|
||
// Go back to the start of the property value and parse it to make sure
|
||
// its variable references are syntactically valid and is otherwise
|
||
// balanced.
|
||
RestoreSavedInputState(stateBeforeProperty);
|
||
|
||
if (!mInSupportsCondition) {
|
||
mScanner->StartRecording();
|
||
}
|
||
|
||
CSSVariableDeclarations::Type type;
|
||
bool dropBackslash;
|
||
nsString impliedCharacters;
|
||
nsCSSValue value;
|
||
if (ParseValueWithVariables(&type, &dropBackslash, impliedCharacters,
|
||
nullptr, nullptr)) {
|
||
MOZ_ASSERT(type == CSSVariableDeclarations::eTokenStream,
|
||
"a non-custom property reparsed since it contained variable "
|
||
"references should not have been 'initial' or 'inherit'");
|
||
|
||
nsString propertyValue;
|
||
|
||
if (!mInSupportsCondition) {
|
||
// If we are in an @supports condition, we don't need to store the
|
||
// actual token stream on the nsCSSValue.
|
||
mScanner->StopRecording(propertyValue);
|
||
if (dropBackslash) {
|
||
MOZ_ASSERT(!propertyValue.IsEmpty() &&
|
||
propertyValue[propertyValue.Length() - 1] == '\\');
|
||
propertyValue.Truncate(propertyValue.Length() - 1);
|
||
}
|
||
propertyValue.Append(impliedCharacters);
|
||
}
|
||
|
||
if (mHavePushBack) {
|
||
// If we came to the end of a property value that had a variable
|
||
// reference and a token was pushed back, then it would have been
|
||
// ended by '!', ')', ';', ']' or '}'. We should remove it from the
|
||
// recorded property value.
|
||
MOZ_ASSERT(mToken.IsSymbol('!') ||
|
||
mToken.IsSymbol(')') ||
|
||
mToken.IsSymbol(';') ||
|
||
mToken.IsSymbol(']') ||
|
||
mToken.IsSymbol('}'));
|
||
if (!mInSupportsCondition) {
|
||
MOZ_ASSERT(!propertyValue.IsEmpty());
|
||
MOZ_ASSERT(propertyValue[propertyValue.Length() - 1] ==
|
||
mToken.mSymbol);
|
||
propertyValue.Truncate(propertyValue.Length() - 1);
|
||
}
|
||
}
|
||
|
||
if (!mInSupportsCondition) {
|
||
if (nsCSSProps::IsShorthand(aPropID)) {
|
||
// If this is a shorthand property, we store the token stream on each
|
||
// of its corresponding longhand properties.
|
||
CSSPROPS_FOR_SHORTHAND_SUBPROPERTIES(p, aPropID) {
|
||
nsCSSValueTokenStream* tokenStream = new nsCSSValueTokenStream;
|
||
tokenStream->mPropertyID = *p;
|
||
tokenStream->mShorthandPropertyID = aPropID;
|
||
tokenStream->mTokenStream = propertyValue;
|
||
tokenStream->mBaseURI = mBaseURI;
|
||
tokenStream->mSheetURI = mSheetURI;
|
||
tokenStream->mSheetPrincipal = mSheetPrincipal;
|
||
tokenStream->mSheet = mSheet;
|
||
tokenStream->mLineNumber = stateBeforeProperty.mPosition.LineNumber();
|
||
tokenStream->mLineOffset = stateBeforeProperty.mPosition.LineOffset();
|
||
value.SetTokenStreamValue(tokenStream);
|
||
AppendValue(*p, value);
|
||
}
|
||
} else {
|
||
nsCSSValueTokenStream* tokenStream = new nsCSSValueTokenStream;
|
||
tokenStream->mPropertyID = aPropID;
|
||
tokenStream->mTokenStream = propertyValue;
|
||
tokenStream->mBaseURI = mBaseURI;
|
||
tokenStream->mSheetURI = mSheetURI;
|
||
tokenStream->mSheetPrincipal = mSheetPrincipal;
|
||
tokenStream->mSheet = mSheet;
|
||
tokenStream->mLineNumber = stateBeforeProperty.mPosition.LineNumber();
|
||
tokenStream->mLineOffset = stateBeforeProperty.mPosition.LineOffset();
|
||
value.SetTokenStreamValue(tokenStream);
|
||
AppendValue(aPropID, value);
|
||
}
|
||
}
|
||
result = true;
|
||
} else {
|
||
if (!mInSupportsCondition) {
|
||
mScanner->StopRecording();
|
||
}
|
||
}
|
||
}
|
||
|
||
if (mNavQuirkMode) {
|
||
mHashlessColorQuirk = false;
|
||
mUnitlessLengthQuirk = false;
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParsePropertyByFunction(nsCSSProperty aPropID)
|
||
{
|
||
switch (aPropID) { // handle shorthand or multiple properties
|
||
case eCSSProperty_background:
|
||
return ParseBackground();
|
||
case eCSSProperty_background_repeat:
|
||
return ParseBackgroundRepeat();
|
||
case eCSSProperty_background_position:
|
||
return ParseBackgroundPosition();
|
||
case eCSSProperty_background_size:
|
||
return ParseBackgroundSize();
|
||
case eCSSProperty_border:
|
||
return ParseBorderSide(kBorderTopIDs, true);
|
||
case eCSSProperty_border_color:
|
||
return ParseBorderColor();
|
||
case eCSSProperty_border_spacing:
|
||
return ParseBorderSpacing();
|
||
case eCSSProperty_border_style:
|
||
return ParseBorderStyle();
|
||
case eCSSProperty_border_bottom:
|
||
return ParseBorderSide(kBorderBottomIDs, false);
|
||
case eCSSProperty_border_end:
|
||
return ParseDirectionalBorderSide(kBorderEndIDs,
|
||
NS_BOXPROP_SOURCE_LOGICAL);
|
||
case eCSSProperty_border_left:
|
||
return ParseDirectionalBorderSide(kBorderLeftIDs,
|
||
NS_BOXPROP_SOURCE_PHYSICAL);
|
||
case eCSSProperty_border_right:
|
||
return ParseDirectionalBorderSide(kBorderRightIDs,
|
||
NS_BOXPROP_SOURCE_PHYSICAL);
|
||
case eCSSProperty_border_start:
|
||
return ParseDirectionalBorderSide(kBorderStartIDs,
|
||
NS_BOXPROP_SOURCE_LOGICAL);
|
||
case eCSSProperty_border_top:
|
||
return ParseBorderSide(kBorderTopIDs, false);
|
||
case eCSSProperty_border_bottom_colors:
|
||
case eCSSProperty_border_left_colors:
|
||
case eCSSProperty_border_right_colors:
|
||
case eCSSProperty_border_top_colors:
|
||
return ParseBorderColors(aPropID);
|
||
case eCSSProperty_border_image_slice:
|
||
return ParseBorderImageSlice(true, nullptr);
|
||
case eCSSProperty_border_image_width:
|
||
return ParseBorderImageWidth(true);
|
||
case eCSSProperty_border_image_outset:
|
||
return ParseBorderImageOutset(true);
|
||
case eCSSProperty_border_image_repeat:
|
||
return ParseBorderImageRepeat(true);
|
||
case eCSSProperty_border_image:
|
||
return ParseBorderImage();
|
||
case eCSSProperty_border_width:
|
||
return ParseBorderWidth();
|
||
case eCSSProperty_border_end_color:
|
||
return ParseDirectionalBoxProperty(eCSSProperty_border_end_color,
|
||
NS_BOXPROP_SOURCE_LOGICAL);
|
||
case eCSSProperty_border_left_color:
|
||
return ParseDirectionalBoxProperty(eCSSProperty_border_left_color,
|
||
NS_BOXPROP_SOURCE_PHYSICAL);
|
||
case eCSSProperty_border_right_color:
|
||
return ParseDirectionalBoxProperty(eCSSProperty_border_right_color,
|
||
NS_BOXPROP_SOURCE_PHYSICAL);
|
||
case eCSSProperty_border_start_color:
|
||
return ParseDirectionalBoxProperty(eCSSProperty_border_start_color,
|
||
NS_BOXPROP_SOURCE_LOGICAL);
|
||
case eCSSProperty_border_end_width:
|
||
return ParseDirectionalBoxProperty(eCSSProperty_border_end_width,
|
||
NS_BOXPROP_SOURCE_LOGICAL);
|
||
case eCSSProperty_border_left_width:
|
||
return ParseDirectionalBoxProperty(eCSSProperty_border_left_width,
|
||
NS_BOXPROP_SOURCE_PHYSICAL);
|
||
case eCSSProperty_border_right_width:
|
||
return ParseDirectionalBoxProperty(eCSSProperty_border_right_width,
|
||
NS_BOXPROP_SOURCE_PHYSICAL);
|
||
case eCSSProperty_border_start_width:
|
||
return ParseDirectionalBoxProperty(eCSSProperty_border_start_width,
|
||
NS_BOXPROP_SOURCE_LOGICAL);
|
||
case eCSSProperty_border_end_style:
|
||
return ParseDirectionalBoxProperty(eCSSProperty_border_end_style,
|
||
NS_BOXPROP_SOURCE_LOGICAL);
|
||
case eCSSProperty_border_left_style:
|
||
return ParseDirectionalBoxProperty(eCSSProperty_border_left_style,
|
||
NS_BOXPROP_SOURCE_PHYSICAL);
|
||
case eCSSProperty_border_right_style:
|
||
return ParseDirectionalBoxProperty(eCSSProperty_border_right_style,
|
||
NS_BOXPROP_SOURCE_PHYSICAL);
|
||
case eCSSProperty_border_start_style:
|
||
return ParseDirectionalBoxProperty(eCSSProperty_border_start_style,
|
||
NS_BOXPROP_SOURCE_LOGICAL);
|
||
case eCSSProperty_border_radius:
|
||
return ParseBoxCornerRadii(kBorderRadiusIDs);
|
||
case eCSSProperty__moz_outline_radius:
|
||
return ParseBoxCornerRadii(kOutlineRadiusIDs);
|
||
|
||
case eCSSProperty_border_top_left_radius:
|
||
case eCSSProperty_border_top_right_radius:
|
||
case eCSSProperty_border_bottom_right_radius:
|
||
case eCSSProperty_border_bottom_left_radius:
|
||
case eCSSProperty__moz_outline_radius_topLeft:
|
||
case eCSSProperty__moz_outline_radius_topRight:
|
||
case eCSSProperty__moz_outline_radius_bottomRight:
|
||
case eCSSProperty__moz_outline_radius_bottomLeft:
|
||
return ParseBoxCornerRadius(aPropID);
|
||
|
||
case eCSSProperty_box_shadow:
|
||
case eCSSProperty_text_shadow:
|
||
return ParseShadowList(aPropID);
|
||
|
||
case eCSSProperty_clip:
|
||
return ParseRect(eCSSProperty_clip);
|
||
case eCSSProperty__moz_columns:
|
||
return ParseColumns();
|
||
case eCSSProperty__moz_column_rule:
|
||
return ParseBorderSide(kColumnRuleIDs, false);
|
||
case eCSSProperty_content:
|
||
return ParseContent();
|
||
case eCSSProperty_counter_increment:
|
||
case eCSSProperty_counter_reset:
|
||
return ParseCounterData(aPropID);
|
||
case eCSSProperty_cursor:
|
||
return ParseCursor();
|
||
case eCSSProperty_filter:
|
||
return ParseFilter();
|
||
case eCSSProperty_flex:
|
||
return ParseFlex();
|
||
case eCSSProperty_flex_flow:
|
||
return ParseFlexFlow();
|
||
case eCSSProperty_font:
|
||
return ParseFont();
|
||
case eCSSProperty_image_region:
|
||
return ParseRect(eCSSProperty_image_region);
|
||
case eCSSProperty_list_style:
|
||
return ParseListStyle();
|
||
case eCSSProperty_margin:
|
||
return ParseMargin();
|
||
case eCSSProperty_margin_end:
|
||
return ParseDirectionalBoxProperty(eCSSProperty_margin_end,
|
||
NS_BOXPROP_SOURCE_LOGICAL);
|
||
case eCSSProperty_margin_left:
|
||
return ParseDirectionalBoxProperty(eCSSProperty_margin_left,
|
||
NS_BOXPROP_SOURCE_PHYSICAL);
|
||
case eCSSProperty_margin_right:
|
||
return ParseDirectionalBoxProperty(eCSSProperty_margin_right,
|
||
NS_BOXPROP_SOURCE_PHYSICAL);
|
||
case eCSSProperty_margin_start:
|
||
return ParseDirectionalBoxProperty(eCSSProperty_margin_start,
|
||
NS_BOXPROP_SOURCE_LOGICAL);
|
||
case eCSSProperty_outline:
|
||
return ParseOutline();
|
||
case eCSSProperty_overflow:
|
||
return ParseOverflow();
|
||
case eCSSProperty_padding:
|
||
return ParsePadding();
|
||
case eCSSProperty_padding_end:
|
||
return ParseDirectionalBoxProperty(eCSSProperty_padding_end,
|
||
NS_BOXPROP_SOURCE_LOGICAL);
|
||
case eCSSProperty_padding_left:
|
||
return ParseDirectionalBoxProperty(eCSSProperty_padding_left,
|
||
NS_BOXPROP_SOURCE_PHYSICAL);
|
||
case eCSSProperty_padding_right:
|
||
return ParseDirectionalBoxProperty(eCSSProperty_padding_right,
|
||
NS_BOXPROP_SOURCE_PHYSICAL);
|
||
case eCSSProperty_padding_start:
|
||
return ParseDirectionalBoxProperty(eCSSProperty_padding_start,
|
||
NS_BOXPROP_SOURCE_LOGICAL);
|
||
case eCSSProperty_quotes:
|
||
return ParseQuotes();
|
||
case eCSSProperty_size:
|
||
return ParseSize();
|
||
case eCSSProperty_text_decoration:
|
||
return ParseTextDecoration();
|
||
case eCSSProperty_transform:
|
||
return ParseTransform(false);
|
||
case eCSSProperty__moz_transform:
|
||
return ParseTransform(true);
|
||
case eCSSProperty_transform_origin:
|
||
return ParseTransformOrigin(false);
|
||
case eCSSProperty_perspective_origin:
|
||
return ParseTransformOrigin(true);
|
||
case eCSSProperty_transition:
|
||
return ParseTransition();
|
||
case eCSSProperty_animation:
|
||
return ParseAnimation();
|
||
case eCSSProperty_transition_property:
|
||
return ParseTransitionProperty();
|
||
case eCSSProperty_fill:
|
||
case eCSSProperty_stroke:
|
||
return ParsePaint(aPropID);
|
||
case eCSSProperty_stroke_dasharray:
|
||
return ParseDasharray();
|
||
case eCSSProperty_marker:
|
||
return ParseMarker();
|
||
case eCSSProperty_paint_order:
|
||
return ParsePaintOrder();
|
||
case eCSSProperty_all:
|
||
return ParseAll();
|
||
default:
|
||
NS_ABORT_IF_FALSE(false, "should not be called");
|
||
return false;
|
||
}
|
||
}
|
||
|
||
// Bits used in determining which background position info we have
|
||
#define BG_CENTER NS_STYLE_BG_POSITION_CENTER
|
||
#define BG_TOP NS_STYLE_BG_POSITION_TOP
|
||
#define BG_BOTTOM NS_STYLE_BG_POSITION_BOTTOM
|
||
#define BG_LEFT NS_STYLE_BG_POSITION_LEFT
|
||
#define BG_RIGHT NS_STYLE_BG_POSITION_RIGHT
|
||
#define BG_CTB (BG_CENTER | BG_TOP | BG_BOTTOM)
|
||
#define BG_TB (BG_TOP | BG_BOTTOM)
|
||
#define BG_CLR (BG_CENTER | BG_LEFT | BG_RIGHT)
|
||
#define BG_LR (BG_LEFT | BG_RIGHT)
|
||
|
||
bool
|
||
CSSParserImpl::ParseSingleValueProperty(nsCSSValue& aValue,
|
||
nsCSSProperty aPropID)
|
||
{
|
||
if (aPropID == eCSSPropertyExtra_x_none_value) {
|
||
return ParseVariant(aValue, VARIANT_NONE | VARIANT_INHERIT, nullptr);
|
||
}
|
||
|
||
if (aPropID == eCSSPropertyExtra_x_auto_value) {
|
||
return ParseVariant(aValue, VARIANT_AUTO | VARIANT_INHERIT, nullptr);
|
||
}
|
||
|
||
if (aPropID < 0 || aPropID >= eCSSProperty_COUNT_no_shorthands) {
|
||
NS_ABORT_IF_FALSE(false, "not a single value property");
|
||
return false;
|
||
}
|
||
|
||
if (nsCSSProps::PropHasFlags(aPropID, CSS_PROPERTY_VALUE_PARSER_FUNCTION)) {
|
||
switch (aPropID) {
|
||
case eCSSProperty_font_family:
|
||
return ParseFamily(aValue);
|
||
case eCSSProperty_font_synthesis:
|
||
return ParseFontSynthesis(aValue);
|
||
case eCSSProperty_font_variant_alternates:
|
||
return ParseFontVariantAlternates(aValue);
|
||
case eCSSProperty_font_variant_east_asian:
|
||
return ParseFontVariantEastAsian(aValue);
|
||
case eCSSProperty_font_variant_ligatures:
|
||
return ParseFontVariantLigatures(aValue);
|
||
case eCSSProperty_font_variant_numeric:
|
||
return ParseFontVariantNumeric(aValue);
|
||
case eCSSProperty_font_feature_settings:
|
||
return ParseFontFeatureSettings(aValue);
|
||
case eCSSProperty_font_weight:
|
||
return ParseFontWeight(aValue);
|
||
case eCSSProperty_image_orientation:
|
||
return ParseImageOrientation(aValue);
|
||
case eCSSProperty_marks:
|
||
return ParseMarks(aValue);
|
||
case eCSSProperty_text_align:
|
||
return ParseTextAlign(aValue);
|
||
case eCSSProperty_text_align_last:
|
||
return ParseTextAlignLast(aValue);
|
||
case eCSSProperty_text_decoration_line:
|
||
return ParseTextDecorationLine(aValue);
|
||
case eCSSProperty_text_combine_horizontal:
|
||
return ParseTextCombineHorizontal(aValue);
|
||
case eCSSProperty_text_overflow:
|
||
return ParseTextOverflow(aValue);
|
||
default:
|
||
NS_ABORT_IF_FALSE(false, "should not reach here");
|
||
return false;
|
||
}
|
||
}
|
||
|
||
uint32_t variant = nsCSSProps::ParserVariant(aPropID);
|
||
if (variant == 0) {
|
||
NS_ABORT_IF_FALSE(false, "not a single value property");
|
||
return false;
|
||
}
|
||
|
||
// We only allow 'script-level' when unsafe rules are enabled, because
|
||
// otherwise it could interfere with rulenode optimizations if used in
|
||
// a non-MathML-enabled document.
|
||
if (aPropID == eCSSProperty_script_level && !mUnsafeRulesEnabled)
|
||
return false;
|
||
|
||
const int32_t *kwtable = nsCSSProps::kKeywordTableTable[aPropID];
|
||
switch (nsCSSProps::ValueRestrictions(aPropID)) {
|
||
default:
|
||
NS_ABORT_IF_FALSE(false, "should not be reached");
|
||
case 0:
|
||
return ParseVariant(aValue, variant, kwtable);
|
||
case CSS_PROPERTY_VALUE_NONNEGATIVE:
|
||
return ParseNonNegativeVariant(aValue, variant, kwtable);
|
||
case CSS_PROPERTY_VALUE_AT_LEAST_ONE:
|
||
return ParseOneOrLargerVariant(aValue, variant, kwtable);
|
||
}
|
||
}
|
||
|
||
// nsFont::EnumerateFamilies callback for ParseFontDescriptorValue
|
||
struct MOZ_STACK_CLASS ExtractFirstFamilyData {
|
||
nsAutoString mFamilyName;
|
||
bool mGood;
|
||
ExtractFirstFamilyData() : mFamilyName(), mGood(false) {}
|
||
};
|
||
|
||
static bool
|
||
ExtractFirstFamily(const nsString& aFamily,
|
||
bool aGeneric,
|
||
void* aData)
|
||
{
|
||
ExtractFirstFamilyData* realData = (ExtractFirstFamilyData*) aData;
|
||
if (aGeneric || realData->mFamilyName.Length() > 0) {
|
||
realData->mGood = false;
|
||
return false;
|
||
}
|
||
realData->mFamilyName.Assign(aFamily);
|
||
realData->mGood = true;
|
||
return true;
|
||
}
|
||
|
||
// font-descriptor: descriptor ':' value ';'
|
||
// caller has advanced mToken to point at the descriptor
|
||
bool
|
||
CSSParserImpl::ParseFontDescriptorValue(nsCSSFontDesc aDescID,
|
||
nsCSSValue& aValue)
|
||
{
|
||
switch (aDescID) {
|
||
// These four are similar to the properties of the same name,
|
||
// possibly with more restrictions on the values they can take.
|
||
case eCSSFontDesc_Family: {
|
||
if (!ParseFamily(aValue) ||
|
||
aValue.GetUnit() != eCSSUnit_Families)
|
||
return false;
|
||
|
||
// the style parameters to the nsFont constructor are ignored,
|
||
// because it's only being used to call EnumerateFamilies
|
||
nsAutoString valueStr;
|
||
aValue.GetStringValue(valueStr);
|
||
nsFont font(valueStr, 0, 0, 0, 0, 0, 0);
|
||
ExtractFirstFamilyData dat;
|
||
|
||
font.EnumerateFamilies(ExtractFirstFamily, (void*) &dat);
|
||
if (!dat.mGood)
|
||
return false;
|
||
|
||
aValue.SetStringValue(dat.mFamilyName, eCSSUnit_String);
|
||
return true;
|
||
}
|
||
|
||
case eCSSFontDesc_Style:
|
||
// property is VARIANT_HMK|VARIANT_SYSFONT
|
||
return ParseVariant(aValue, VARIANT_KEYWORD | VARIANT_NORMAL,
|
||
nsCSSProps::kFontStyleKTable);
|
||
|
||
case eCSSFontDesc_Weight:
|
||
return (ParseFontWeight(aValue) &&
|
||
aValue.GetUnit() != eCSSUnit_Inherit &&
|
||
aValue.GetUnit() != eCSSUnit_Initial &&
|
||
aValue.GetUnit() != eCSSUnit_Unset &&
|
||
(aValue.GetUnit() != eCSSUnit_Enumerated ||
|
||
(aValue.GetIntValue() != NS_STYLE_FONT_WEIGHT_BOLDER &&
|
||
aValue.GetIntValue() != NS_STYLE_FONT_WEIGHT_LIGHTER)));
|
||
|
||
case eCSSFontDesc_Stretch:
|
||
// property is VARIANT_HK|VARIANT_SYSFONT
|
||
return ParseVariant(aValue, VARIANT_KEYWORD,
|
||
nsCSSProps::kFontStretchKTable);
|
||
|
||
// These two are unique to @font-face and have their own special grammar.
|
||
case eCSSFontDesc_Src:
|
||
return ParseFontSrc(aValue);
|
||
|
||
case eCSSFontDesc_UnicodeRange:
|
||
return ParseFontRanges(aValue);
|
||
|
||
case eCSSFontDesc_FontFeatureSettings:
|
||
return ParseFontFeatureSettings(aValue);
|
||
|
||
case eCSSFontDesc_FontLanguageOverride:
|
||
return ParseVariant(aValue, VARIANT_NORMAL | VARIANT_STRING, nullptr);
|
||
|
||
case eCSSFontDesc_UNKNOWN:
|
||
case eCSSFontDesc_COUNT:
|
||
NS_NOTREACHED("bad nsCSSFontDesc code");
|
||
}
|
||
// explicitly do NOT have a default case to let the compiler
|
||
// help find missing descriptors
|
||
return false;
|
||
}
|
||
|
||
void
|
||
CSSParserImpl::InitBoxPropsAsPhysical(const nsCSSProperty *aSourceProperties)
|
||
{
|
||
nsCSSValue physical(NS_BOXPROP_SOURCE_PHYSICAL, eCSSUnit_Enumerated);
|
||
for (const nsCSSProperty *prop = aSourceProperties;
|
||
*prop != eCSSProperty_UNKNOWN; ++prop) {
|
||
AppendValue(*prop, physical);
|
||
}
|
||
}
|
||
|
||
static nsCSSValue
|
||
BoxPositionMaskToCSSValue(int32_t aMask, bool isX)
|
||
{
|
||
int32_t val = NS_STYLE_BG_POSITION_CENTER;
|
||
if (isX) {
|
||
if (aMask & BG_LEFT) {
|
||
val = NS_STYLE_BG_POSITION_LEFT;
|
||
}
|
||
else if (aMask & BG_RIGHT) {
|
||
val = NS_STYLE_BG_POSITION_RIGHT;
|
||
}
|
||
}
|
||
else {
|
||
if (aMask & BG_TOP) {
|
||
val = NS_STYLE_BG_POSITION_TOP;
|
||
}
|
||
else if (aMask & BG_BOTTOM) {
|
||
val = NS_STYLE_BG_POSITION_BOTTOM;
|
||
}
|
||
}
|
||
|
||
return nsCSSValue(val, eCSSUnit_Enumerated);
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseBackground()
|
||
{
|
||
nsAutoParseCompoundProperty compound(this);
|
||
|
||
// background-color can only be set once, so it's not a list.
|
||
nsCSSValue color;
|
||
|
||
// Check first for inherit/initial/unset.
|
||
if (ParseVariant(color, VARIANT_INHERIT, nullptr)) {
|
||
// must be alone
|
||
if (!ExpectEndProperty()) {
|
||
return false;
|
||
}
|
||
for (const nsCSSProperty* subprops =
|
||
nsCSSProps::SubpropertyEntryFor(eCSSProperty_background);
|
||
*subprops != eCSSProperty_UNKNOWN; ++subprops) {
|
||
AppendValue(*subprops, color);
|
||
}
|
||
return true;
|
||
}
|
||
|
||
nsCSSValue image, repeat, attachment, clip, origin, position, size;
|
||
BackgroundParseState state(color, image.SetListValue(),
|
||
repeat.SetPairListValue(),
|
||
attachment.SetListValue(), clip.SetListValue(),
|
||
origin.SetListValue(), position.SetListValue(),
|
||
size.SetPairListValue());
|
||
|
||
for (;;) {
|
||
if (!ParseBackgroundItem(state)) {
|
||
return false;
|
||
}
|
||
if (CheckEndProperty()) {
|
||
break;
|
||
}
|
||
// If we saw a color, this must be the last item.
|
||
if (color.GetUnit() != eCSSUnit_Null) {
|
||
REPORT_UNEXPECTED_TOKEN(PEExpectEndValue);
|
||
return false;
|
||
}
|
||
// Otherwise, a comma is mandatory.
|
||
if (!ExpectSymbol(',', true)) {
|
||
return false;
|
||
}
|
||
// Chain another entry on all the lists.
|
||
state.mImage->mNext = new nsCSSValueList;
|
||
state.mImage = state.mImage->mNext;
|
||
state.mRepeat->mNext = new nsCSSValuePairList;
|
||
state.mRepeat = state.mRepeat->mNext;
|
||
state.mAttachment->mNext = new nsCSSValueList;
|
||
state.mAttachment = state.mAttachment->mNext;
|
||
state.mClip->mNext = new nsCSSValueList;
|
||
state.mClip = state.mClip->mNext;
|
||
state.mOrigin->mNext = new nsCSSValueList;
|
||
state.mOrigin = state.mOrigin->mNext;
|
||
state.mPosition->mNext = new nsCSSValueList;
|
||
state.mPosition = state.mPosition->mNext;
|
||
state.mSize->mNext = new nsCSSValuePairList;
|
||
state.mSize = state.mSize->mNext;
|
||
}
|
||
|
||
// If we get to this point without seeing a color, provide a default.
|
||
if (color.GetUnit() == eCSSUnit_Null) {
|
||
color.SetIntegerColorValue(NS_RGBA(0,0,0,0), eCSSUnit_RGBAColor);
|
||
}
|
||
|
||
AppendValue(eCSSProperty_background_image, image);
|
||
AppendValue(eCSSProperty_background_repeat, repeat);
|
||
AppendValue(eCSSProperty_background_attachment, attachment);
|
||
AppendValue(eCSSProperty_background_clip, clip);
|
||
AppendValue(eCSSProperty_background_origin, origin);
|
||
AppendValue(eCSSProperty_background_position, position);
|
||
AppendValue(eCSSProperty_background_size, size);
|
||
AppendValue(eCSSProperty_background_color, color);
|
||
return true;
|
||
}
|
||
|
||
// Parse one item of the background shorthand property.
|
||
bool
|
||
CSSParserImpl::ParseBackgroundItem(CSSParserImpl::BackgroundParseState& aState)
|
||
|
||
{
|
||
// Fill in the values that the shorthand will set if we don't find
|
||
// other values.
|
||
aState.mImage->mValue.SetNoneValue();
|
||
aState.mRepeat->mXValue.SetIntValue(NS_STYLE_BG_REPEAT_REPEAT,
|
||
eCSSUnit_Enumerated);
|
||
aState.mRepeat->mYValue.Reset();
|
||
aState.mAttachment->mValue.SetIntValue(NS_STYLE_BG_ATTACHMENT_SCROLL,
|
||
eCSSUnit_Enumerated);
|
||
aState.mClip->mValue.SetIntValue(NS_STYLE_BG_CLIP_BORDER,
|
||
eCSSUnit_Enumerated);
|
||
aState.mOrigin->mValue.SetIntValue(NS_STYLE_BG_ORIGIN_PADDING,
|
||
eCSSUnit_Enumerated);
|
||
nsRefPtr<nsCSSValue::Array> positionArr = nsCSSValue::Array::Create(4);
|
||
aState.mPosition->mValue.SetArrayValue(positionArr, eCSSUnit_Array);
|
||
positionArr->Item(1).SetPercentValue(0.0f);
|
||
positionArr->Item(3).SetPercentValue(0.0f);
|
||
aState.mSize->mXValue.SetAutoValue();
|
||
aState.mSize->mYValue.SetAutoValue();
|
||
|
||
bool haveColor = false,
|
||
haveImage = false,
|
||
haveRepeat = false,
|
||
haveAttach = false,
|
||
havePositionAndSize = false,
|
||
haveOrigin = false,
|
||
haveSomething = false;
|
||
|
||
while (GetToken(true)) {
|
||
nsCSSTokenType tt = mToken.mType;
|
||
UngetToken(); // ...but we'll still cheat and use mToken
|
||
if (tt == eCSSToken_Symbol) {
|
||
// ExpectEndProperty only looks for symbols, and nothing else will
|
||
// show up as one.
|
||
break;
|
||
}
|
||
|
||
if (tt == eCSSToken_Ident) {
|
||
nsCSSKeyword keyword = nsCSSKeywords::LookupKeyword(mToken.mIdent);
|
||
int32_t dummy;
|
||
if (keyword == eCSSKeyword_inherit ||
|
||
keyword == eCSSKeyword_initial ||
|
||
keyword == eCSSKeyword_unset) {
|
||
return false;
|
||
} else if (keyword == eCSSKeyword_none) {
|
||
if (haveImage)
|
||
return false;
|
||
haveImage = true;
|
||
if (!ParseSingleValueProperty(aState.mImage->mValue,
|
||
eCSSProperty_background_image)) {
|
||
NS_NOTREACHED("should be able to parse");
|
||
return false;
|
||
}
|
||
} else if (nsCSSProps::FindKeyword(keyword,
|
||
nsCSSProps::kBackgroundAttachmentKTable, dummy)) {
|
||
if (haveAttach)
|
||
return false;
|
||
haveAttach = true;
|
||
if (!ParseSingleValueProperty(aState.mAttachment->mValue,
|
||
eCSSProperty_background_attachment)) {
|
||
NS_NOTREACHED("should be able to parse");
|
||
return false;
|
||
}
|
||
} else if (nsCSSProps::FindKeyword(keyword,
|
||
nsCSSProps::kBackgroundRepeatKTable, dummy)) {
|
||
if (haveRepeat)
|
||
return false;
|
||
haveRepeat = true;
|
||
nsCSSValuePair scratch;
|
||
if (!ParseBackgroundRepeatValues(scratch)) {
|
||
NS_NOTREACHED("should be able to parse");
|
||
return false;
|
||
}
|
||
aState.mRepeat->mXValue = scratch.mXValue;
|
||
aState.mRepeat->mYValue = scratch.mYValue;
|
||
} else if (nsCSSProps::FindKeyword(keyword,
|
||
nsCSSProps::kBackgroundPositionKTable, dummy)) {
|
||
if (havePositionAndSize)
|
||
return false;
|
||
havePositionAndSize = true;
|
||
if (!ParseBackgroundPositionValues(aState.mPosition->mValue, false)) {
|
||
return false;
|
||
}
|
||
if (ExpectSymbol('/', true)) {
|
||
nsCSSValuePair scratch;
|
||
if (!ParseBackgroundSizeValues(scratch)) {
|
||
return false;
|
||
}
|
||
aState.mSize->mXValue = scratch.mXValue;
|
||
aState.mSize->mYValue = scratch.mYValue;
|
||
}
|
||
} else if (nsCSSProps::FindKeyword(keyword,
|
||
nsCSSProps::kBackgroundOriginKTable, dummy)) {
|
||
if (haveOrigin)
|
||
return false;
|
||
haveOrigin = true;
|
||
if (!ParseSingleValueProperty(aState.mOrigin->mValue,
|
||
eCSSProperty_background_origin)) {
|
||
NS_NOTREACHED("should be able to parse");
|
||
return false;
|
||
}
|
||
|
||
// The spec allows a second box value (for background-clip),
|
||
// immediately following the first one (for background-origin).
|
||
|
||
// 'background-clip' and 'background-origin' use the same keyword table
|
||
MOZ_ASSERT(nsCSSProps::kKeywordTableTable[
|
||
eCSSProperty_background_origin] ==
|
||
nsCSSProps::kBackgroundOriginKTable);
|
||
MOZ_ASSERT(nsCSSProps::kKeywordTableTable[
|
||
eCSSProperty_background_clip] ==
|
||
nsCSSProps::kBackgroundOriginKTable);
|
||
static_assert(NS_STYLE_BG_CLIP_BORDER ==
|
||
NS_STYLE_BG_ORIGIN_BORDER &&
|
||
NS_STYLE_BG_CLIP_PADDING ==
|
||
NS_STYLE_BG_ORIGIN_PADDING &&
|
||
NS_STYLE_BG_CLIP_CONTENT ==
|
||
NS_STYLE_BG_ORIGIN_CONTENT,
|
||
"bg-clip and bg-origin style constants must agree");
|
||
|
||
if (!ParseSingleValueProperty(aState.mClip->mValue,
|
||
eCSSProperty_background_clip)) {
|
||
// When exactly one <box> value is set, it is used for both
|
||
// 'background-origin' and 'background-clip'.
|
||
// See assertions above showing these values are compatible.
|
||
aState.mClip->mValue = aState.mOrigin->mValue;
|
||
}
|
||
} else {
|
||
if (haveColor)
|
||
return false;
|
||
haveColor = true;
|
||
if (!ParseSingleValueProperty(aState.mColor,
|
||
eCSSProperty_background_color)) {
|
||
return false;
|
||
}
|
||
}
|
||
} else if (tt == eCSSToken_URL ||
|
||
(tt == eCSSToken_Function &&
|
||
(mToken.mIdent.LowerCaseEqualsLiteral("linear-gradient") ||
|
||
mToken.mIdent.LowerCaseEqualsLiteral("radial-gradient") ||
|
||
mToken.mIdent.LowerCaseEqualsLiteral("repeating-linear-gradient") ||
|
||
mToken.mIdent.LowerCaseEqualsLiteral("repeating-radial-gradient") ||
|
||
mToken.mIdent.LowerCaseEqualsLiteral("-moz-linear-gradient") ||
|
||
mToken.mIdent.LowerCaseEqualsLiteral("-moz-radial-gradient") ||
|
||
mToken.mIdent.LowerCaseEqualsLiteral("-moz-repeating-linear-gradient") ||
|
||
mToken.mIdent.LowerCaseEqualsLiteral("-moz-repeating-radial-gradient") ||
|
||
mToken.mIdent.LowerCaseEqualsLiteral("-moz-image-rect") ||
|
||
mToken.mIdent.LowerCaseEqualsLiteral("-moz-element")))) {
|
||
if (haveImage)
|
||
return false;
|
||
haveImage = true;
|
||
if (!ParseSingleValueProperty(aState.mImage->mValue,
|
||
eCSSProperty_background_image)) {
|
||
return false;
|
||
}
|
||
} else if (tt == eCSSToken_Dimension ||
|
||
tt == eCSSToken_Number ||
|
||
tt == eCSSToken_Percentage ||
|
||
(tt == eCSSToken_Function &&
|
||
(mToken.mIdent.LowerCaseEqualsLiteral("calc") ||
|
||
mToken.mIdent.LowerCaseEqualsLiteral("-moz-calc")))) {
|
||
if (havePositionAndSize)
|
||
return false;
|
||
havePositionAndSize = true;
|
||
if (!ParseBackgroundPositionValues(aState.mPosition->mValue, false)) {
|
||
return false;
|
||
}
|
||
if (ExpectSymbol('/', true)) {
|
||
nsCSSValuePair scratch;
|
||
if (!ParseBackgroundSizeValues(scratch)) {
|
||
return false;
|
||
}
|
||
aState.mSize->mXValue = scratch.mXValue;
|
||
aState.mSize->mYValue = scratch.mYValue;
|
||
}
|
||
} else {
|
||
if (haveColor)
|
||
return false;
|
||
haveColor = true;
|
||
// Note: This parses 'inherit', 'initial' and 'unset', but
|
||
// we've already checked for them, so it's ok.
|
||
if (!ParseSingleValueProperty(aState.mColor,
|
||
eCSSProperty_background_color)) {
|
||
return false;
|
||
}
|
||
}
|
||
haveSomething = true;
|
||
}
|
||
|
||
return haveSomething;
|
||
}
|
||
|
||
// This function is very similar to ParseBackgroundPosition and
|
||
// ParseBackgroundSize.
|
||
bool
|
||
CSSParserImpl::ParseValueList(nsCSSProperty aPropID)
|
||
{
|
||
// aPropID is a single value prop-id
|
||
nsCSSValue value;
|
||
if (ParseVariant(value, VARIANT_INHERIT, nullptr)) {
|
||
// 'initial', 'inherit' and 'unset' stand alone, no list permitted.
|
||
if (!ExpectEndProperty()) {
|
||
return false;
|
||
}
|
||
} else {
|
||
nsCSSValueList* item = value.SetListValue();
|
||
for (;;) {
|
||
if (!ParseSingleValueProperty(item->mValue, aPropID)) {
|
||
return false;
|
||
}
|
||
if (CheckEndProperty()) {
|
||
break;
|
||
}
|
||
if (!ExpectSymbol(',', true)) {
|
||
return false;
|
||
}
|
||
item->mNext = new nsCSSValueList;
|
||
item = item->mNext;
|
||
}
|
||
}
|
||
AppendValue(aPropID, value);
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseBackgroundRepeat()
|
||
{
|
||
nsCSSValue value;
|
||
if (ParseVariant(value, VARIANT_INHERIT, nullptr)) {
|
||
// 'initial', 'inherit' and 'unset' stand alone, no list permitted.
|
||
if (!ExpectEndProperty()) {
|
||
return false;
|
||
}
|
||
} else {
|
||
nsCSSValuePair valuePair;
|
||
if (!ParseBackgroundRepeatValues(valuePair)) {
|
||
return false;
|
||
}
|
||
nsCSSValuePairList* item = value.SetPairListValue();
|
||
for (;;) {
|
||
item->mXValue = valuePair.mXValue;
|
||
item->mYValue = valuePair.mYValue;
|
||
if (CheckEndProperty()) {
|
||
break;
|
||
}
|
||
if (!ExpectSymbol(',', true)) {
|
||
return false;
|
||
}
|
||
if (!ParseBackgroundRepeatValues(valuePair)) {
|
||
return false;
|
||
}
|
||
item->mNext = new nsCSSValuePairList;
|
||
item = item->mNext;
|
||
}
|
||
}
|
||
|
||
AppendValue(eCSSProperty_background_repeat, value);
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseBackgroundRepeatValues(nsCSSValuePair& aValue)
|
||
{
|
||
nsCSSValue& xValue = aValue.mXValue;
|
||
nsCSSValue& yValue = aValue.mYValue;
|
||
|
||
if (ParseEnum(xValue, nsCSSProps::kBackgroundRepeatKTable)) {
|
||
int32_t value = xValue.GetIntValue();
|
||
// For single values set yValue as eCSSUnit_Null.
|
||
if (value == NS_STYLE_BG_REPEAT_REPEAT_X ||
|
||
value == NS_STYLE_BG_REPEAT_REPEAT_Y ||
|
||
!ParseEnum(yValue, nsCSSProps::kBackgroundRepeatPartKTable)) {
|
||
// the caller will fail cases like "repeat-x no-repeat"
|
||
// by expecting a list separator or an end property.
|
||
yValue.Reset();
|
||
}
|
||
return true;
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
// This function is very similar to ParseBackgroundList and ParseBackgroundSize.
|
||
bool
|
||
CSSParserImpl::ParseBackgroundPosition()
|
||
{
|
||
nsCSSValue value;
|
||
if (ParseVariant(value, VARIANT_INHERIT, nullptr)) {
|
||
// 'initial', 'inherit' and 'unset' stand alone, no list permitted.
|
||
if (!ExpectEndProperty()) {
|
||
return false;
|
||
}
|
||
} else {
|
||
nsCSSValue itemValue;
|
||
if (!ParseBackgroundPositionValues(itemValue, false)) {
|
||
return false;
|
||
}
|
||
nsCSSValueList* item = value.SetListValue();
|
||
for (;;) {
|
||
item->mValue = itemValue;
|
||
if (CheckEndProperty()) {
|
||
break;
|
||
}
|
||
if (!ExpectSymbol(',', true)) {
|
||
return false;
|
||
}
|
||
if (!ParseBackgroundPositionValues(itemValue, false)) {
|
||
return false;
|
||
}
|
||
item->mNext = new nsCSSValueList;
|
||
item = item->mNext;
|
||
}
|
||
}
|
||
AppendValue(eCSSProperty_background_position, value);
|
||
return true;
|
||
}
|
||
|
||
/**
|
||
* BoxPositionMaskToCSSValue and ParseBoxPositionValues are used
|
||
* for parsing the CSS 2.1 background-position syntax (which has at
|
||
* most two values). (Compare to the css3-background syntax which
|
||
* takes up to four values.) Some current CSS specifications that
|
||
* use background-position-like syntax still use this old syntax.
|
||
**
|
||
* Parses two values that correspond to positions in a box. These can be
|
||
* values corresponding to percentages of the box, raw offsets, or keywords
|
||
* like "top," "left center," etc.
|
||
*
|
||
* @param aOut The nsCSSValuePair in which to place the result.
|
||
* @param aAcceptsInherit If true, 'inherit', 'initial' and 'unset' are
|
||
* legal values
|
||
* @param aAllowExplicitCenter If true, 'center' is a legal value
|
||
* @return Whether or not the operation succeeded.
|
||
*/
|
||
bool CSSParserImpl::ParseBoxPositionValues(nsCSSValuePair &aOut,
|
||
bool aAcceptsInherit,
|
||
bool aAllowExplicitCenter)
|
||
{
|
||
// First try a percentage or a length value
|
||
nsCSSValue &xValue = aOut.mXValue,
|
||
&yValue = aOut.mYValue;
|
||
int32_t variantMask =
|
||
(aAcceptsInherit ? VARIANT_INHERIT : 0) | VARIANT_LP | VARIANT_CALC;
|
||
if (ParseVariant(xValue, variantMask, nullptr)) {
|
||
if (eCSSUnit_Inherit == xValue.GetUnit() ||
|
||
eCSSUnit_Initial == xValue.GetUnit() ||
|
||
eCSSUnit_Unset == xValue.GetUnit()) { // both are inherit, initial or unset
|
||
yValue = xValue;
|
||
return true;
|
||
}
|
||
// We have one percentage/length/calc. Get the optional second
|
||
// percentage/length/calc/keyword.
|
||
if (ParseVariant(yValue, VARIANT_LP | VARIANT_CALC, nullptr)) {
|
||
// We have two numbers
|
||
return true;
|
||
}
|
||
|
||
if (ParseEnum(yValue, nsCSSProps::kBackgroundPositionKTable)) {
|
||
int32_t yVal = yValue.GetIntValue();
|
||
if (!(yVal & BG_CTB)) {
|
||
// The second keyword can only be 'center', 'top', or 'bottom'
|
||
return false;
|
||
}
|
||
yValue = BoxPositionMaskToCSSValue(yVal, false);
|
||
return true;
|
||
}
|
||
|
||
// If only one percentage or length value is given, it sets the
|
||
// horizontal position only, and the vertical position will be 50%.
|
||
yValue.SetPercentValue(0.5f);
|
||
return true;
|
||
}
|
||
|
||
// Now try keywords. We do this manually to allow for the first
|
||
// appearance of "center" to apply to the either the x or y
|
||
// position (it's ambiguous so we have to disambiguate). Each
|
||
// allowed keyword value is assigned it's own bit. We don't allow
|
||
// any duplicate keywords other than center. We try to get two
|
||
// keywords but it's okay if there is only one.
|
||
int32_t mask = 0;
|
||
if (ParseEnum(xValue, nsCSSProps::kBackgroundPositionKTable)) {
|
||
int32_t bit = xValue.GetIntValue();
|
||
mask |= bit;
|
||
if (ParseEnum(xValue, nsCSSProps::kBackgroundPositionKTable)) {
|
||
bit = xValue.GetIntValue();
|
||
if (mask & (bit & ~BG_CENTER)) {
|
||
// Only the 'center' keyword can be duplicated.
|
||
return false;
|
||
}
|
||
mask |= bit;
|
||
}
|
||
else {
|
||
// Only one keyword. See if we have a length, percentage, or calc.
|
||
if (ParseVariant(yValue, VARIANT_LP | VARIANT_CALC, nullptr)) {
|
||
if (!(mask & BG_CLR)) {
|
||
// The first keyword can only be 'center', 'left', or 'right'
|
||
return false;
|
||
}
|
||
|
||
xValue = BoxPositionMaskToCSSValue(mask, true);
|
||
return true;
|
||
}
|
||
}
|
||
}
|
||
|
||
// Check for bad input. Bad input consists of no matching keywords,
|
||
// or pairs of x keywords or pairs of y keywords.
|
||
if ((mask == 0) || (mask == (BG_TOP | BG_BOTTOM)) ||
|
||
(mask == (BG_LEFT | BG_RIGHT)) ||
|
||
(!aAllowExplicitCenter && (mask & BG_CENTER))) {
|
||
return false;
|
||
}
|
||
|
||
// Create style values
|
||
xValue = BoxPositionMaskToCSSValue(mask, true);
|
||
yValue = BoxPositionMaskToCSSValue(mask, false);
|
||
return true;
|
||
}
|
||
|
||
bool CSSParserImpl::ParseBackgroundPositionValues(nsCSSValue& aOut,
|
||
bool aAcceptsInherit)
|
||
{
|
||
// css3-background allows positions to be defined as offsets
|
||
// from an edge. There can be 2 keywords and 2 offsets given. These
|
||
// four 'values' are stored in an array in the following order:
|
||
// [keyword offset keyword offset]. If a keyword or offset isn't
|
||
// parsed the value of the corresponding array element is set
|
||
// to eCSSUnit_Null by a call to nsCSSValue::Reset().
|
||
if (aAcceptsInherit && ParseVariant(aOut, VARIANT_INHERIT, nullptr)) {
|
||
return true;
|
||
}
|
||
|
||
nsRefPtr<nsCSSValue::Array> value = nsCSSValue::Array::Create(4);
|
||
aOut.SetArrayValue(value, eCSSUnit_Array);
|
||
|
||
// The following clarifies organisation of the array.
|
||
nsCSSValue &xEdge = value->Item(0),
|
||
&xOffset = value->Item(1),
|
||
&yEdge = value->Item(2),
|
||
&yOffset = value->Item(3);
|
||
|
||
// Parse all the values into the array.
|
||
uint32_t valueCount = 0;
|
||
for (int32_t i = 0; i < 4; i++) {
|
||
if (!ParseVariant(value->Item(i), VARIANT_LPCALC | VARIANT_KEYWORD,
|
||
nsCSSProps::kBackgroundPositionKTable)) {
|
||
break;
|
||
}
|
||
++valueCount;
|
||
}
|
||
|
||
switch (valueCount) {
|
||
case 4:
|
||
// "If three or four values are given, then each <percentage> or <length>
|
||
// represents an offset and must be preceded by a keyword, which specifies
|
||
// from which edge the offset is given."
|
||
if (eCSSUnit_Enumerated != xEdge.GetUnit() ||
|
||
BG_CENTER == xEdge.GetIntValue() ||
|
||
eCSSUnit_Enumerated == xOffset.GetUnit() ||
|
||
eCSSUnit_Enumerated != yEdge.GetUnit() ||
|
||
BG_CENTER == yEdge.GetIntValue() ||
|
||
eCSSUnit_Enumerated == yOffset.GetUnit()) {
|
||
return false;
|
||
}
|
||
break;
|
||
case 3:
|
||
// "If three or four values are given, then each <percentage> or<length>
|
||
// represents an offset and must be preceded by a keyword, which specifies
|
||
// from which edge the offset is given." ... "If three values are given,
|
||
// the missing offset is assumed to be zero."
|
||
if (eCSSUnit_Enumerated != value->Item(1).GetUnit()) {
|
||
// keyword offset keyword
|
||
// Second value is non-keyword, thus first value must be a non-center
|
||
// keyword.
|
||
if (eCSSUnit_Enumerated != value->Item(0).GetUnit() ||
|
||
BG_CENTER == value->Item(0).GetIntValue()) {
|
||
return false;
|
||
}
|
||
|
||
// Remaining value must be a keyword.
|
||
if (eCSSUnit_Enumerated != value->Item(2).GetUnit()) {
|
||
return false;
|
||
}
|
||
|
||
yOffset.Reset(); // Everything else is in the correct position.
|
||
} else if (eCSSUnit_Enumerated != value->Item(2).GetUnit()) {
|
||
// keyword keyword offset
|
||
// Third value is non-keyword, thus second value must be non-center
|
||
// keyword.
|
||
if (BG_CENTER == value->Item(1).GetIntValue()) {
|
||
return false;
|
||
}
|
||
|
||
// Remaining value must be a keyword.
|
||
if (eCSSUnit_Enumerated != value->Item(0).GetUnit()) {
|
||
return false;
|
||
}
|
||
|
||
// Move the values to the correct position in the array.
|
||
value->Item(3) = value->Item(2); // yOffset
|
||
value->Item(2) = value->Item(1); // yEdge
|
||
value->Item(1).Reset(); // xOffset
|
||
} else {
|
||
return false;
|
||
}
|
||
break;
|
||
case 2:
|
||
// "If two values are given and at least one value is not a keyword, then
|
||
// the first value represents the horizontal position (or offset) and the
|
||
// second represents the vertical position (or offset)"
|
||
if (eCSSUnit_Enumerated == value->Item(0).GetUnit()) {
|
||
if (eCSSUnit_Enumerated == value->Item(1).GetUnit()) {
|
||
// keyword keyword
|
||
value->Item(2) = value->Item(1); // move yEdge to correct position
|
||
xOffset.Reset();
|
||
yOffset.Reset();
|
||
} else {
|
||
// keyword offset
|
||
// First value must represent horizontal position.
|
||
if ((BG_TOP | BG_BOTTOM) & value->Item(0).GetIntValue()) {
|
||
return false;
|
||
}
|
||
value->Item(3) = value->Item(1); // move yOffset to correct position
|
||
xOffset.Reset();
|
||
yEdge.Reset();
|
||
}
|
||
} else {
|
||
if (eCSSUnit_Enumerated == value->Item(1).GetUnit()) {
|
||
// offset keyword
|
||
// Second value must represent vertical position.
|
||
if ((BG_LEFT | BG_RIGHT) & value->Item(1).GetIntValue()) {
|
||
return false;
|
||
}
|
||
value->Item(2) = value->Item(1); // move yEdge to correct position
|
||
value->Item(1) = value->Item(0); // move xOffset to correct position
|
||
xEdge.Reset();
|
||
yOffset.Reset();
|
||
} else {
|
||
// offset offset
|
||
value->Item(3) = value->Item(1); // move yOffset to correct position
|
||
value->Item(1) = value->Item(0); // move xOffset to correct position
|
||
xEdge.Reset();
|
||
yEdge.Reset();
|
||
}
|
||
}
|
||
break;
|
||
case 1:
|
||
// "If only one value is specified, the second value is assumed to be
|
||
// center."
|
||
if (eCSSUnit_Enumerated == value->Item(0).GetUnit()) {
|
||
xOffset.Reset();
|
||
} else {
|
||
value->Item(1) = value->Item(0); // move xOffset to correct position
|
||
xEdge.Reset();
|
||
}
|
||
yEdge.SetIntValue(NS_STYLE_BG_POSITION_CENTER, eCSSUnit_Enumerated);
|
||
yOffset.Reset();
|
||
break;
|
||
default:
|
||
return false;
|
||
}
|
||
|
||
// For compatibility with CSS2.1 code the edges can be unspecified.
|
||
// Unspecified edges are recorded as nullptr.
|
||
NS_ASSERTION((eCSSUnit_Enumerated == xEdge.GetUnit() ||
|
||
eCSSUnit_Null == xEdge.GetUnit()) &&
|
||
(eCSSUnit_Enumerated == yEdge.GetUnit() ||
|
||
eCSSUnit_Null == yEdge.GetUnit()) &&
|
||
eCSSUnit_Enumerated != xOffset.GetUnit() &&
|
||
eCSSUnit_Enumerated != yOffset.GetUnit(),
|
||
"Unexpected units");
|
||
|
||
// Keywords in first and second pairs can not both be vertical or
|
||
// horizontal keywords. (eg. left right, bottom top). Additionally,
|
||
// non-center keyword can not be duplicated (eg. left left).
|
||
int32_t xEdgeEnum =
|
||
xEdge.GetUnit() == eCSSUnit_Enumerated ? xEdge.GetIntValue() : 0;
|
||
int32_t yEdgeEnum =
|
||
yEdge.GetUnit() == eCSSUnit_Enumerated ? yEdge.GetIntValue() : 0;
|
||
if ((xEdgeEnum | yEdgeEnum) == (BG_LEFT | BG_RIGHT) ||
|
||
(xEdgeEnum | yEdgeEnum) == (BG_TOP | BG_BOTTOM) ||
|
||
(xEdgeEnum & yEdgeEnum & ~BG_CENTER)) {
|
||
return false;
|
||
}
|
||
|
||
// The values could be in an order that is different than expected.
|
||
// eg. x contains vertical information, y contains horizontal information.
|
||
// Swap if incorrect order.
|
||
if (xEdgeEnum & (BG_TOP | BG_BOTTOM) ||
|
||
yEdgeEnum & (BG_LEFT | BG_RIGHT)) {
|
||
nsCSSValue swapEdge = xEdge;
|
||
nsCSSValue swapOffset = xOffset;
|
||
xEdge = yEdge;
|
||
xOffset = yOffset;
|
||
yEdge = swapEdge;
|
||
yOffset = swapOffset;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
// This function is very similar to ParseBackgroundList and
|
||
// ParseBackgroundPosition.
|
||
bool
|
||
CSSParserImpl::ParseBackgroundSize()
|
||
{
|
||
nsCSSValue value;
|
||
if (ParseVariant(value, VARIANT_INHERIT, nullptr)) {
|
||
// 'initial', 'inherit' and 'unset' stand alone, no list permitted.
|
||
if (!ExpectEndProperty()) {
|
||
return false;
|
||
}
|
||
} else {
|
||
nsCSSValuePair valuePair;
|
||
if (!ParseBackgroundSizeValues(valuePair)) {
|
||
return false;
|
||
}
|
||
nsCSSValuePairList* item = value.SetPairListValue();
|
||
for (;;) {
|
||
item->mXValue = valuePair.mXValue;
|
||
item->mYValue = valuePair.mYValue;
|
||
if (CheckEndProperty()) {
|
||
break;
|
||
}
|
||
if (!ExpectSymbol(',', true)) {
|
||
return false;
|
||
}
|
||
if (!ParseBackgroundSizeValues(valuePair)) {
|
||
return false;
|
||
}
|
||
item->mNext = new nsCSSValuePairList;
|
||
item = item->mNext;
|
||
}
|
||
}
|
||
AppendValue(eCSSProperty_background_size, value);
|
||
return true;
|
||
}
|
||
|
||
/**
|
||
* Parses two values that correspond to lengths for the background-size
|
||
* property. These can be one or two lengths (or the 'auto' keyword) or
|
||
* percentages corresponding to the element's dimensions or the single keywords
|
||
* 'contain' or 'cover'. 'initial', 'inherit' and 'unset' must be handled by
|
||
* the caller if desired.
|
||
*
|
||
* @param aOut The nsCSSValuePair in which to place the result.
|
||
* @return Whether or not the operation succeeded.
|
||
*/
|
||
#define BG_SIZE_VARIANT (VARIANT_LP | VARIANT_AUTO | VARIANT_CALC)
|
||
bool CSSParserImpl::ParseBackgroundSizeValues(nsCSSValuePair &aOut)
|
||
{
|
||
// First try a percentage or a length value
|
||
nsCSSValue &xValue = aOut.mXValue,
|
||
&yValue = aOut.mYValue;
|
||
if (ParseNonNegativeVariant(xValue, BG_SIZE_VARIANT, nullptr)) {
|
||
// We have one percentage/length/calc/auto. Get the optional second
|
||
// percentage/length/calc/keyword.
|
||
if (ParseNonNegativeVariant(yValue, BG_SIZE_VARIANT, nullptr)) {
|
||
// We have a second percentage/length/calc/auto.
|
||
return true;
|
||
}
|
||
|
||
// If only one percentage or length value is given, it sets the
|
||
// horizontal size only, and the vertical size will be as if by 'auto'.
|
||
yValue.SetAutoValue();
|
||
return true;
|
||
}
|
||
|
||
// Now address 'contain' and 'cover'.
|
||
if (!ParseEnum(xValue, nsCSSProps::kBackgroundSizeKTable))
|
||
return false;
|
||
yValue.Reset();
|
||
return true;
|
||
}
|
||
#undef BG_SIZE_VARIANT
|
||
|
||
bool
|
||
CSSParserImpl::ParseBorderColor()
|
||
{
|
||
static const nsCSSProperty kBorderColorSources[] = {
|
||
eCSSProperty_border_left_color_ltr_source,
|
||
eCSSProperty_border_left_color_rtl_source,
|
||
eCSSProperty_border_right_color_ltr_source,
|
||
eCSSProperty_border_right_color_rtl_source,
|
||
eCSSProperty_UNKNOWN
|
||
};
|
||
|
||
// do this now, in case 4 values weren't specified
|
||
InitBoxPropsAsPhysical(kBorderColorSources);
|
||
return ParseBoxProperties(kBorderColorIDs);
|
||
}
|
||
|
||
void
|
||
CSSParserImpl::SetBorderImageInitialValues()
|
||
{
|
||
// border-image-source: none
|
||
nsCSSValue source;
|
||
source.SetNoneValue();
|
||
AppendValue(eCSSProperty_border_image_source, source);
|
||
|
||
// border-image-slice: 100%
|
||
nsCSSValue sliceBoxValue;
|
||
nsCSSRect& sliceBox = sliceBoxValue.SetRectValue();
|
||
sliceBox.SetAllSidesTo(nsCSSValue(1.0f, eCSSUnit_Percent));
|
||
nsCSSValue slice;
|
||
nsCSSValueList* sliceList = slice.SetListValue();
|
||
sliceList->mValue = sliceBoxValue;
|
||
AppendValue(eCSSProperty_border_image_slice, slice);
|
||
|
||
// border-image-width: 1
|
||
nsCSSValue width;
|
||
nsCSSRect& widthBox = width.SetRectValue();
|
||
widthBox.SetAllSidesTo(nsCSSValue(1.0f, eCSSUnit_Number));
|
||
AppendValue(eCSSProperty_border_image_width, width);
|
||
|
||
// border-image-outset: 0
|
||
nsCSSValue outset;
|
||
nsCSSRect& outsetBox = outset.SetRectValue();
|
||
outsetBox.SetAllSidesTo(nsCSSValue(0.0f, eCSSUnit_Number));
|
||
AppendValue(eCSSProperty_border_image_outset, outset);
|
||
|
||
// border-image-repeat: repeat
|
||
nsCSSValue repeat;
|
||
nsCSSValuePair repeatPair;
|
||
repeatPair.SetBothValuesTo(nsCSSValue(NS_STYLE_BORDER_IMAGE_REPEAT_STRETCH,
|
||
eCSSUnit_Enumerated));
|
||
repeat.SetPairValue(&repeatPair);
|
||
AppendValue(eCSSProperty_border_image_repeat, repeat);
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseBorderImageSlice(bool aAcceptsInherit,
|
||
bool* aConsumedTokens)
|
||
{
|
||
// border-image-slice: initial | [<number>|<percentage>]{1,4} && fill?
|
||
nsCSSValue value;
|
||
|
||
if (aConsumedTokens) {
|
||
*aConsumedTokens = true;
|
||
}
|
||
|
||
if (aAcceptsInherit && ParseVariant(value, VARIANT_INHERIT, nullptr)) {
|
||
// Keywords "inherit", "initial" and "unset" can not be mixed, so we
|
||
// are done.
|
||
AppendValue(eCSSProperty_border_image_slice, value);
|
||
return true;
|
||
}
|
||
|
||
// Try parsing "fill" value.
|
||
nsCSSValue imageSliceFillValue;
|
||
bool hasFill = ParseEnum(imageSliceFillValue,
|
||
nsCSSProps::kBorderImageSliceKTable);
|
||
|
||
// Parse the box dimensions.
|
||
nsCSSValue imageSliceBoxValue;
|
||
if (!ParseGroupedBoxProperty(VARIANT_PN, imageSliceBoxValue)) {
|
||
if (!hasFill && aConsumedTokens) {
|
||
*aConsumedTokens = false;
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
// Try parsing "fill" keyword again if the first time failed because keyword
|
||
// and slice dimensions can be in any order.
|
||
if (!hasFill) {
|
||
hasFill = ParseEnum(imageSliceFillValue,
|
||
nsCSSProps::kBorderImageSliceKTable);
|
||
}
|
||
|
||
nsCSSValueList* borderImageSlice = value.SetListValue();
|
||
// Put the box value into the list.
|
||
borderImageSlice->mValue = imageSliceBoxValue;
|
||
|
||
if (hasFill) {
|
||
// Put the "fill" value into the list.
|
||
borderImageSlice->mNext = new nsCSSValueList;
|
||
borderImageSlice->mNext->mValue = imageSliceFillValue;
|
||
}
|
||
|
||
AppendValue(eCSSProperty_border_image_slice, value);
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseBorderImageWidth(bool aAcceptsInherit)
|
||
{
|
||
// border-image-width: initial | [<length>|<number>|<percentage>|auto]{1,4}
|
||
nsCSSValue value;
|
||
|
||
if (aAcceptsInherit && ParseVariant(value, VARIANT_INHERIT, nullptr)) {
|
||
// Keywords "inherit", "initial" and "unset" can not be mixed, so we
|
||
// are done.
|
||
AppendValue(eCSSProperty_border_image_width, value);
|
||
return true;
|
||
}
|
||
|
||
// Parse the box dimensions.
|
||
if (!ParseGroupedBoxProperty(VARIANT_ALPN, value)) {
|
||
return false;
|
||
}
|
||
|
||
AppendValue(eCSSProperty_border_image_width, value);
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseBorderImageOutset(bool aAcceptsInherit)
|
||
{
|
||
// border-image-outset: initial | [<length>|<number>]{1,4}
|
||
nsCSSValue value;
|
||
|
||
if (aAcceptsInherit && ParseVariant(value, VARIANT_INHERIT, nullptr)) {
|
||
// Keywords "inherit", "initial" and "unset" can not be mixed, so we
|
||
// are done.
|
||
AppendValue(eCSSProperty_border_image_outset, value);
|
||
return true;
|
||
}
|
||
|
||
// Parse the box dimensions.
|
||
if (!ParseGroupedBoxProperty(VARIANT_LN, value)) {
|
||
return false;
|
||
}
|
||
|
||
AppendValue(eCSSProperty_border_image_outset, value);
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseBorderImageRepeat(bool aAcceptsInherit)
|
||
{
|
||
nsCSSValue value;
|
||
if (aAcceptsInherit && ParseVariant(value, VARIANT_INHERIT, nullptr)) {
|
||
// Keywords "inherit", "initial" and "unset" can not be mixed, so we
|
||
// are done.
|
||
AppendValue(eCSSProperty_border_image_repeat, value);
|
||
return true;
|
||
}
|
||
|
||
nsCSSValuePair result;
|
||
if (!ParseEnum(result.mXValue, nsCSSProps::kBorderImageRepeatKTable)) {
|
||
return false;
|
||
}
|
||
|
||
// optional second keyword, defaults to first
|
||
if (!ParseEnum(result.mYValue, nsCSSProps::kBorderImageRepeatKTable)) {
|
||
result.mYValue = result.mXValue;
|
||
}
|
||
|
||
value.SetPairValue(&result);
|
||
AppendValue(eCSSProperty_border_image_repeat, value);
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseBorderImage()
|
||
{
|
||
nsAutoParseCompoundProperty compound(this);
|
||
|
||
// border-image: inherit | initial |
|
||
// <border-image-source> ||
|
||
// <border-image-slice>
|
||
// [ / <border-image-width> |
|
||
// / <border-image-width>? / <border-image-outset> ]? ||
|
||
// <border-image-repeat>
|
||
|
||
nsCSSValue value;
|
||
if (ParseVariant(value, VARIANT_INHERIT, nullptr)) {
|
||
AppendValue(eCSSProperty_border_image_source, value);
|
||
AppendValue(eCSSProperty_border_image_slice, value);
|
||
AppendValue(eCSSProperty_border_image_width, value);
|
||
AppendValue(eCSSProperty_border_image_outset, value);
|
||
AppendValue(eCSSProperty_border_image_repeat, value);
|
||
// Keywords "inherit", "initial" and "unset" can't be mixed, so we are done.
|
||
return true;
|
||
}
|
||
|
||
// No empty property.
|
||
if (CheckEndProperty()) {
|
||
return false;
|
||
}
|
||
|
||
// Shorthand properties are required to set everything they can.
|
||
SetBorderImageInitialValues();
|
||
|
||
bool foundSource = false;
|
||
bool foundSliceWidthOutset = false;
|
||
bool foundRepeat = false;
|
||
|
||
// This loop is used to handle the parsing of border-image properties which
|
||
// can appear in any order.
|
||
nsCSSValue imageSourceValue;
|
||
while (!CheckEndProperty()) {
|
||
// <border-image-source>
|
||
if (!foundSource && ParseVariant(imageSourceValue, VARIANT_UO, nullptr)) {
|
||
AppendValue(eCSSProperty_border_image_source, imageSourceValue);
|
||
foundSource = true;
|
||
continue;
|
||
}
|
||
|
||
// <border-image-slice>
|
||
// ParseBorderImageSlice is weird. It may consume tokens and then return
|
||
// false, because it parses a property with two required components that
|
||
// can appear in either order. Since the tokens that were consumed cannot
|
||
// parse as anything else we care about, this isn't a problem.
|
||
if (!foundSliceWidthOutset) {
|
||
bool sliceConsumedTokens = false;
|
||
if (ParseBorderImageSlice(false, &sliceConsumedTokens)) {
|
||
foundSliceWidthOutset = true;
|
||
|
||
// [ / <border-image-width>?
|
||
if (ExpectSymbol('/', true)) {
|
||
bool foundBorderImageWidth = ParseBorderImageWidth(false);
|
||
|
||
// [ / <border-image-outset>
|
||
if (ExpectSymbol('/', true)) {
|
||
if (!ParseBorderImageOutset(false)) {
|
||
return false;
|
||
}
|
||
} else if (!foundBorderImageWidth) {
|
||
// If this part has an trailing slash, the whole declaration is
|
||
// invalid.
|
||
return false;
|
||
}
|
||
}
|
||
|
||
continue;
|
||
} else {
|
||
// If we consumed some tokens for <border-image-slice> but did not
|
||
// successfully parse it, we have an error.
|
||
if (sliceConsumedTokens) {
|
||
return false;
|
||
}
|
||
}
|
||
}
|
||
|
||
// <border-image-repeat>
|
||
if (!foundRepeat && ParseBorderImageRepeat(false)) {
|
||
foundRepeat = true;
|
||
continue;
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseBorderSpacing()
|
||
{
|
||
nsCSSValue xValue, yValue;
|
||
if (!ParseNonNegativeVariant(xValue, VARIANT_HL | VARIANT_CALC, nullptr)) {
|
||
return false;
|
||
}
|
||
|
||
// If we have one length, get the optional second length.
|
||
// set the second value equal to the first.
|
||
if (xValue.IsLengthUnit() || xValue.IsCalcUnit()) {
|
||
ParseNonNegativeVariant(yValue, VARIANT_LENGTH | VARIANT_CALC, nullptr);
|
||
}
|
||
|
||
if (!ExpectEndProperty()) {
|
||
return false;
|
||
}
|
||
|
||
if (yValue == xValue || yValue.GetUnit() == eCSSUnit_Null) {
|
||
AppendValue(eCSSProperty_border_spacing, xValue);
|
||
} else {
|
||
nsCSSValue pair;
|
||
pair.SetPairValue(xValue, yValue);
|
||
AppendValue(eCSSProperty_border_spacing, pair);
|
||
}
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseBorderSide(const nsCSSProperty aPropIDs[],
|
||
bool aSetAllSides)
|
||
{
|
||
const int32_t numProps = 3;
|
||
nsCSSValue values[numProps];
|
||
|
||
int32_t found = ParseChoice(values, aPropIDs, numProps);
|
||
if ((found < 1) || (false == ExpectEndProperty())) {
|
||
return false;
|
||
}
|
||
|
||
if ((found & 1) == 0) { // Provide default border-width
|
||
values[0].SetIntValue(NS_STYLE_BORDER_WIDTH_MEDIUM, eCSSUnit_Enumerated);
|
||
}
|
||
if ((found & 2) == 0) { // Provide default border-style
|
||
values[1].SetIntValue(NS_STYLE_BORDER_STYLE_NONE, eCSSUnit_Enumerated);
|
||
}
|
||
if ((found & 4) == 0) { // text color will be used
|
||
values[2].SetIntValue(NS_STYLE_COLOR_MOZ_USE_TEXT_COLOR, eCSSUnit_Enumerated);
|
||
}
|
||
|
||
if (aSetAllSides) {
|
||
static const nsCSSProperty kBorderSources[] = {
|
||
eCSSProperty_border_left_color_ltr_source,
|
||
eCSSProperty_border_left_color_rtl_source,
|
||
eCSSProperty_border_right_color_ltr_source,
|
||
eCSSProperty_border_right_color_rtl_source,
|
||
eCSSProperty_border_left_style_ltr_source,
|
||
eCSSProperty_border_left_style_rtl_source,
|
||
eCSSProperty_border_right_style_ltr_source,
|
||
eCSSProperty_border_right_style_rtl_source,
|
||
eCSSProperty_border_left_width_ltr_source,
|
||
eCSSProperty_border_left_width_rtl_source,
|
||
eCSSProperty_border_right_width_ltr_source,
|
||
eCSSProperty_border_right_width_rtl_source,
|
||
eCSSProperty_UNKNOWN
|
||
};
|
||
|
||
InitBoxPropsAsPhysical(kBorderSources);
|
||
|
||
// Parsing "border" shorthand; set all four sides to the same thing
|
||
for (int32_t index = 0; index < 4; index++) {
|
||
NS_ASSERTION(numProps == 3, "This code needs updating");
|
||
AppendValue(kBorderWidthIDs[index], values[0]);
|
||
AppendValue(kBorderStyleIDs[index], values[1]);
|
||
AppendValue(kBorderColorIDs[index], values[2]);
|
||
}
|
||
|
||
static const nsCSSProperty kBorderColorsProps[] = {
|
||
eCSSProperty_border_top_colors,
|
||
eCSSProperty_border_right_colors,
|
||
eCSSProperty_border_bottom_colors,
|
||
eCSSProperty_border_left_colors
|
||
};
|
||
|
||
// Set the other properties that the border shorthand sets to their
|
||
// initial values.
|
||
nsCSSValue extraValue;
|
||
switch (values[0].GetUnit()) {
|
||
case eCSSUnit_Inherit:
|
||
case eCSSUnit_Initial:
|
||
case eCSSUnit_Unset:
|
||
extraValue = values[0];
|
||
// Set value of border-image properties to initial/inherit/unset
|
||
AppendValue(eCSSProperty_border_image_source, extraValue);
|
||
AppendValue(eCSSProperty_border_image_slice, extraValue);
|
||
AppendValue(eCSSProperty_border_image_width, extraValue);
|
||
AppendValue(eCSSProperty_border_image_outset, extraValue);
|
||
AppendValue(eCSSProperty_border_image_repeat, extraValue);
|
||
break;
|
||
default:
|
||
extraValue.SetNoneValue();
|
||
SetBorderImageInitialValues();
|
||
break;
|
||
}
|
||
NS_FOR_CSS_SIDES(side) {
|
||
AppendValue(kBorderColorsProps[side], extraValue);
|
||
}
|
||
}
|
||
else {
|
||
// Just set our one side
|
||
for (int32_t index = 0; index < numProps; index++) {
|
||
AppendValue(aPropIDs[index], values[index]);
|
||
}
|
||
}
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseDirectionalBorderSide(const nsCSSProperty aPropIDs[],
|
||
int32_t aSourceType)
|
||
{
|
||
const int32_t numProps = 3;
|
||
nsCSSValue values[numProps];
|
||
|
||
int32_t found = ParseChoice(values, aPropIDs, numProps);
|
||
if ((found < 1) || (false == ExpectEndProperty())) {
|
||
return false;
|
||
}
|
||
|
||
if ((found & 1) == 0) { // Provide default border-width
|
||
values[0].SetIntValue(NS_STYLE_BORDER_WIDTH_MEDIUM, eCSSUnit_Enumerated);
|
||
}
|
||
if ((found & 2) == 0) { // Provide default border-style
|
||
values[1].SetIntValue(NS_STYLE_BORDER_STYLE_NONE, eCSSUnit_Enumerated);
|
||
}
|
||
if ((found & 4) == 0) { // text color will be used
|
||
values[2].SetIntValue(NS_STYLE_COLOR_MOZ_USE_TEXT_COLOR, eCSSUnit_Enumerated);
|
||
}
|
||
for (int32_t index = 0; index < numProps; index++) {
|
||
const nsCSSProperty* subprops =
|
||
nsCSSProps::SubpropertyEntryFor(aPropIDs[index + numProps]);
|
||
NS_ASSERTION(subprops[3] == eCSSProperty_UNKNOWN,
|
||
"not box property with physical vs. logical cascading");
|
||
AppendValue(subprops[0], values[index]);
|
||
nsCSSValue typeVal(aSourceType, eCSSUnit_Enumerated);
|
||
AppendValue(subprops[1], typeVal);
|
||
AppendValue(subprops[2], typeVal);
|
||
}
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseBorderStyle()
|
||
{
|
||
static const nsCSSProperty kBorderStyleSources[] = {
|
||
eCSSProperty_border_left_style_ltr_source,
|
||
eCSSProperty_border_left_style_rtl_source,
|
||
eCSSProperty_border_right_style_ltr_source,
|
||
eCSSProperty_border_right_style_rtl_source,
|
||
eCSSProperty_UNKNOWN
|
||
};
|
||
|
||
// do this now, in case 4 values weren't specified
|
||
InitBoxPropsAsPhysical(kBorderStyleSources);
|
||
return ParseBoxProperties(kBorderStyleIDs);
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseBorderWidth()
|
||
{
|
||
static const nsCSSProperty kBorderWidthSources[] = {
|
||
eCSSProperty_border_left_width_ltr_source,
|
||
eCSSProperty_border_left_width_rtl_source,
|
||
eCSSProperty_border_right_width_ltr_source,
|
||
eCSSProperty_border_right_width_rtl_source,
|
||
eCSSProperty_UNKNOWN
|
||
};
|
||
|
||
// do this now, in case 4 values weren't specified
|
||
InitBoxPropsAsPhysical(kBorderWidthSources);
|
||
return ParseBoxProperties(kBorderWidthIDs);
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseBorderColors(nsCSSProperty aProperty)
|
||
{
|
||
nsCSSValue value;
|
||
if (ParseVariant(value, VARIANT_INHERIT | VARIANT_NONE, nullptr)) {
|
||
// 'inherit', 'initial', 'unset' and 'none' are only allowed on their own
|
||
if (!ExpectEndProperty()) {
|
||
return false;
|
||
}
|
||
} else {
|
||
nsCSSValueList *cur = value.SetListValue();
|
||
for (;;) {
|
||
if (!ParseVariant(cur->mValue, VARIANT_COLOR | VARIANT_KEYWORD,
|
||
nsCSSProps::kBorderColorKTable)) {
|
||
return false;
|
||
}
|
||
if (CheckEndProperty()) {
|
||
break;
|
||
}
|
||
cur->mNext = new nsCSSValueList;
|
||
cur = cur->mNext;
|
||
}
|
||
}
|
||
AppendValue(aProperty, value);
|
||
return true;
|
||
}
|
||
|
||
// Parse the top level of a calc() expression.
|
||
bool
|
||
CSSParserImpl::ParseCalc(nsCSSValue &aValue, int32_t aVariantMask)
|
||
{
|
||
// Parsing calc expressions requires, in a number of cases, looking
|
||
// for a token that is *either* a value of the property or a number.
|
||
// This can be done without lookahead when we assume that the property
|
||
// values cannot themselves be numbers.
|
||
NS_ASSERTION(!(aVariantMask & VARIANT_NUMBER), "unexpected variant mask");
|
||
NS_ABORT_IF_FALSE(aVariantMask != 0, "unexpected variant mask");
|
||
|
||
bool oldUnitlessLengthQuirk = mUnitlessLengthQuirk;
|
||
mUnitlessLengthQuirk = false;
|
||
|
||
// One-iteration loop so we can break to the error-handling case.
|
||
do {
|
||
// The toplevel of a calc() is always an nsCSSValue::Array of length 1.
|
||
nsRefPtr<nsCSSValue::Array> arr = nsCSSValue::Array::Create(1);
|
||
|
||
if (!ParseCalcAdditiveExpression(arr->Item(0), aVariantMask))
|
||
break;
|
||
|
||
if (!ExpectSymbol(')', true))
|
||
break;
|
||
|
||
aValue.SetArrayValue(arr, eCSSUnit_Calc);
|
||
mUnitlessLengthQuirk = oldUnitlessLengthQuirk;
|
||
return true;
|
||
} while (false);
|
||
|
||
SkipUntil(')');
|
||
mUnitlessLengthQuirk = oldUnitlessLengthQuirk;
|
||
return false;
|
||
}
|
||
|
||
// We optimize away the <value-expression> production given that
|
||
// ParseVariant consumes initial whitespace and we call
|
||
// ExpectSymbol(')') with true for aSkipWS.
|
||
// * If aVariantMask is VARIANT_NUMBER, this function parses the
|
||
// <number-additive-expression> production.
|
||
// * If aVariantMask does not contain VARIANT_NUMBER, this function
|
||
// parses the <value-additive-expression> production.
|
||
// * Otherwise (VARIANT_NUMBER and other bits) this function parses
|
||
// whichever one of the productions matches ***and modifies
|
||
// aVariantMask*** to reflect which one it has parsed by either
|
||
// removing VARIANT_NUMBER or removing all other bits.
|
||
// It does so iteratively, but builds the correct recursive
|
||
// data structure.
|
||
bool
|
||
CSSParserImpl::ParseCalcAdditiveExpression(nsCSSValue& aValue,
|
||
int32_t& aVariantMask)
|
||
{
|
||
NS_ABORT_IF_FALSE(aVariantMask != 0, "unexpected variant mask");
|
||
nsCSSValue *storage = &aValue;
|
||
for (;;) {
|
||
bool haveWS;
|
||
if (!ParseCalcMultiplicativeExpression(*storage, aVariantMask, &haveWS))
|
||
return false;
|
||
|
||
if (!haveWS || !GetToken(false))
|
||
return true;
|
||
nsCSSUnit unit;
|
||
if (mToken.IsSymbol('+')) {
|
||
unit = eCSSUnit_Calc_Plus;
|
||
} else if (mToken.IsSymbol('-')) {
|
||
unit = eCSSUnit_Calc_Minus;
|
||
} else {
|
||
UngetToken();
|
||
return true;
|
||
}
|
||
if (!RequireWhitespace())
|
||
return false;
|
||
|
||
nsRefPtr<nsCSSValue::Array> arr = nsCSSValue::Array::Create(2);
|
||
arr->Item(0) = aValue;
|
||
storage = &arr->Item(1);
|
||
aValue.SetArrayValue(arr, unit);
|
||
}
|
||
}
|
||
|
||
struct ReduceNumberCalcOps : public mozilla::css::BasicFloatCalcOps,
|
||
public mozilla::css::CSSValueInputCalcOps
|
||
{
|
||
result_type ComputeLeafValue(const nsCSSValue& aValue)
|
||
{
|
||
NS_ABORT_IF_FALSE(aValue.GetUnit() == eCSSUnit_Number, "unexpected unit");
|
||
return aValue.GetFloatValue();
|
||
}
|
||
|
||
float ComputeNumber(const nsCSSValue& aValue)
|
||
{
|
||
return mozilla::css::ComputeCalc(aValue, *this);
|
||
}
|
||
};
|
||
|
||
// * If aVariantMask is VARIANT_NUMBER, this function parses the
|
||
// <number-multiplicative-expression> production.
|
||
// * If aVariantMask does not contain VARIANT_NUMBER, this function
|
||
// parses the <value-multiplicative-expression> production.
|
||
// * Otherwise (VARIANT_NUMBER and other bits) this function parses
|
||
// whichever one of the productions matches ***and modifies
|
||
// aVariantMask*** to reflect which one it has parsed by either
|
||
// removing VARIANT_NUMBER or removing all other bits.
|
||
// It does so iteratively, but builds the correct recursive data
|
||
// structure.
|
||
// This function always consumes *trailing* whitespace when it returns
|
||
// true; whether there was any such whitespace is returned in the
|
||
// aHadFinalWS parameter.
|
||
bool
|
||
CSSParserImpl::ParseCalcMultiplicativeExpression(nsCSSValue& aValue,
|
||
int32_t& aVariantMask,
|
||
bool *aHadFinalWS)
|
||
{
|
||
NS_ABORT_IF_FALSE(aVariantMask != 0, "unexpected variant mask");
|
||
bool gotValue = false; // already got the part with the unit
|
||
bool afterDivision = false;
|
||
|
||
nsCSSValue *storage = &aValue;
|
||
for (;;) {
|
||
int32_t variantMask;
|
||
if (afterDivision || gotValue) {
|
||
variantMask = VARIANT_NUMBER;
|
||
} else {
|
||
variantMask = aVariantMask | VARIANT_NUMBER;
|
||
}
|
||
if (!ParseCalcTerm(*storage, variantMask))
|
||
return false;
|
||
NS_ABORT_IF_FALSE(variantMask != 0,
|
||
"ParseCalcTerm did not set variantMask appropriately");
|
||
NS_ABORT_IF_FALSE(!(variantMask & VARIANT_NUMBER) ||
|
||
!(variantMask & ~int32_t(VARIANT_NUMBER)),
|
||
"ParseCalcTerm did not set variantMask appropriately");
|
||
|
||
if (variantMask & VARIANT_NUMBER) {
|
||
// Simplify the value immediately so we can check for division by
|
||
// zero.
|
||
ReduceNumberCalcOps ops;
|
||
float number = mozilla::css::ComputeCalc(*storage, ops);
|
||
if (number == 0.0 && afterDivision)
|
||
return false;
|
||
storage->SetFloatValue(number, eCSSUnit_Number);
|
||
} else {
|
||
gotValue = true;
|
||
|
||
if (storage != &aValue) {
|
||
// Simplify any numbers in the Times_L position (which are
|
||
// not simplified by the check above).
|
||
NS_ABORT_IF_FALSE(storage == &aValue.GetArrayValue()->Item(1),
|
||
"unexpected relationship to current storage");
|
||
nsCSSValue &leftValue = aValue.GetArrayValue()->Item(0);
|
||
ReduceNumberCalcOps ops;
|
||
float number = mozilla::css::ComputeCalc(leftValue, ops);
|
||
leftValue.SetFloatValue(number, eCSSUnit_Number);
|
||
}
|
||
}
|
||
|
||
bool hadWS = RequireWhitespace();
|
||
if (!GetToken(false)) {
|
||
*aHadFinalWS = hadWS;
|
||
break;
|
||
}
|
||
nsCSSUnit unit;
|
||
if (mToken.IsSymbol('*')) {
|
||
unit = gotValue ? eCSSUnit_Calc_Times_R : eCSSUnit_Calc_Times_L;
|
||
afterDivision = false;
|
||
} else if (mToken.IsSymbol('/')) {
|
||
unit = eCSSUnit_Calc_Divided;
|
||
afterDivision = true;
|
||
} else {
|
||
UngetToken();
|
||
*aHadFinalWS = hadWS;
|
||
break;
|
||
}
|
||
|
||
nsRefPtr<nsCSSValue::Array> arr = nsCSSValue::Array::Create(2);
|
||
arr->Item(0) = aValue;
|
||
storage = &arr->Item(1);
|
||
aValue.SetArrayValue(arr, unit);
|
||
}
|
||
|
||
// Adjust aVariantMask (see comments above function) to reflect which
|
||
// option we took.
|
||
if (aVariantMask & VARIANT_NUMBER) {
|
||
if (gotValue) {
|
||
aVariantMask &= ~int32_t(VARIANT_NUMBER);
|
||
} else {
|
||
aVariantMask = VARIANT_NUMBER;
|
||
}
|
||
} else {
|
||
if (!gotValue) {
|
||
// We had to find a value, but we didn't.
|
||
return false;
|
||
}
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
// * If aVariantMask is VARIANT_NUMBER, this function parses the
|
||
// <number-term> production.
|
||
// * If aVariantMask does not contain VARIANT_NUMBER, this function
|
||
// parses the <value-term> production.
|
||
// * Otherwise (VARIANT_NUMBER and other bits) this function parses
|
||
// whichever one of the productions matches ***and modifies
|
||
// aVariantMask*** to reflect which one it has parsed by either
|
||
// removing VARIANT_NUMBER or removing all other bits.
|
||
bool
|
||
CSSParserImpl::ParseCalcTerm(nsCSSValue& aValue, int32_t& aVariantMask)
|
||
{
|
||
NS_ABORT_IF_FALSE(aVariantMask != 0, "unexpected variant mask");
|
||
if (!GetToken(true))
|
||
return false;
|
||
// Either an additive expression in parentheses...
|
||
if (mToken.IsSymbol('(')) {
|
||
if (!ParseCalcAdditiveExpression(aValue, aVariantMask) ||
|
||
!ExpectSymbol(')', true)) {
|
||
SkipUntil(')');
|
||
return false;
|
||
}
|
||
return true;
|
||
}
|
||
// ... or just a value
|
||
UngetToken();
|
||
// Always pass VARIANT_NUMBER to ParseVariant so that unitless zero
|
||
// always gets picked up
|
||
if (!ParseVariant(aValue, aVariantMask | VARIANT_NUMBER, nullptr)) {
|
||
return false;
|
||
}
|
||
// ...and do the VARIANT_NUMBER check ourselves.
|
||
if (!(aVariantMask & VARIANT_NUMBER) && aValue.GetUnit() == eCSSUnit_Number) {
|
||
return false;
|
||
}
|
||
// If we did the value parsing, we need to adjust aVariantMask to
|
||
// reflect which option we took (see above).
|
||
if (aVariantMask & VARIANT_NUMBER) {
|
||
if (aValue.GetUnit() == eCSSUnit_Number) {
|
||
aVariantMask = VARIANT_NUMBER;
|
||
} else {
|
||
aVariantMask &= ~int32_t(VARIANT_NUMBER);
|
||
}
|
||
}
|
||
return true;
|
||
}
|
||
|
||
// This function consumes all consecutive whitespace and returns whether
|
||
// there was any.
|
||
bool
|
||
CSSParserImpl::RequireWhitespace()
|
||
{
|
||
if (!GetToken(false))
|
||
return false;
|
||
if (mToken.mType != eCSSToken_Whitespace) {
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
// Skip any additional whitespace tokens.
|
||
if (GetToken(true)) {
|
||
UngetToken();
|
||
}
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseRect(nsCSSProperty aPropID)
|
||
{
|
||
if (! GetToken(true)) {
|
||
return false;
|
||
}
|
||
|
||
nsCSSValue val;
|
||
|
||
if (mToken.mType == eCSSToken_Ident) {
|
||
nsCSSKeyword keyword = nsCSSKeywords::LookupKeyword(mToken.mIdent);
|
||
switch (keyword) {
|
||
case eCSSKeyword_auto:
|
||
if (!ExpectEndProperty()) {
|
||
return false;
|
||
}
|
||
val.SetAutoValue();
|
||
break;
|
||
case eCSSKeyword_inherit:
|
||
if (!ExpectEndProperty()) {
|
||
return false;
|
||
}
|
||
val.SetInheritValue();
|
||
break;
|
||
case eCSSKeyword_initial:
|
||
if (!ExpectEndProperty()) {
|
||
return false;
|
||
}
|
||
val.SetInitialValue();
|
||
break;
|
||
case eCSSKeyword_unset:
|
||
if (nsLayoutUtils::UnsetValueEnabled()) {
|
||
if (!ExpectEndProperty()) {
|
||
return false;
|
||
}
|
||
val.SetUnsetValue();
|
||
break;
|
||
}
|
||
// fall through
|
||
default:
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
} else if (mToken.mType == eCSSToken_Function &&
|
||
mToken.mIdent.LowerCaseEqualsLiteral("rect")) {
|
||
nsCSSRect& rect = val.SetRectValue();
|
||
bool useCommas;
|
||
NS_FOR_CSS_SIDES(side) {
|
||
if (! ParseVariant(rect.*(nsCSSRect::sides[side]),
|
||
VARIANT_AL, nullptr)) {
|
||
return false;
|
||
}
|
||
if (side == 0) {
|
||
useCommas = ExpectSymbol(',', true);
|
||
} else if (useCommas && side < 3) {
|
||
// Skip optional commas between elements, but only if the first
|
||
// separator was a comma.
|
||
if (!ExpectSymbol(',', true)) {
|
||
return false;
|
||
}
|
||
}
|
||
}
|
||
if (!ExpectSymbol(')', true)) {
|
||
return false;
|
||
}
|
||
if (!ExpectEndProperty()) {
|
||
return false;
|
||
}
|
||
} else {
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
|
||
AppendValue(aPropID, val);
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseColumns()
|
||
{
|
||
// We use a similar "fake value" hack to ParseListStyle, because
|
||
// "auto" is acceptable for both column-count and column-width.
|
||
// If the fake "auto" value is found, and one of the real values isn't,
|
||
// that means the fake auto value is meant for the real value we didn't
|
||
// find.
|
||
static const nsCSSProperty columnIDs[] = {
|
||
eCSSPropertyExtra_x_auto_value,
|
||
eCSSProperty__moz_column_count,
|
||
eCSSProperty__moz_column_width
|
||
};
|
||
const int32_t numProps = NS_ARRAY_LENGTH(columnIDs);
|
||
|
||
nsCSSValue values[numProps];
|
||
int32_t found = ParseChoice(values, columnIDs, numProps);
|
||
if (found < 1 || !ExpectEndProperty()) {
|
||
return false;
|
||
}
|
||
if ((found & (1|2|4)) == (1|2|4) &&
|
||
values[0].GetUnit() == eCSSUnit_Auto) {
|
||
// We filled all 3 values, which is invalid
|
||
return false;
|
||
}
|
||
|
||
if ((found & 2) == 0) {
|
||
// Provide auto column-count
|
||
values[1].SetAutoValue();
|
||
}
|
||
if ((found & 4) == 0) {
|
||
// Provide auto column-width
|
||
values[2].SetAutoValue();
|
||
}
|
||
|
||
// Start at index 1 to skip the fake auto value.
|
||
for (int32_t index = 1; index < numProps; index++) {
|
||
AppendValue(columnIDs[index], values[index]);
|
||
}
|
||
return true;
|
||
}
|
||
|
||
#define VARIANT_CONTENT (VARIANT_STRING | VARIANT_URL | VARIANT_COUNTER | VARIANT_ATTR | \
|
||
VARIANT_KEYWORD)
|
||
bool
|
||
CSSParserImpl::ParseContent()
|
||
{
|
||
// We need to divide the 'content' keywords into two classes for
|
||
// ParseVariant's sake, so we can't just use nsCSSProps::kContentKTable.
|
||
static const int32_t kContentListKWs[] = {
|
||
eCSSKeyword_open_quote, NS_STYLE_CONTENT_OPEN_QUOTE,
|
||
eCSSKeyword_close_quote, NS_STYLE_CONTENT_CLOSE_QUOTE,
|
||
eCSSKeyword_no_open_quote, NS_STYLE_CONTENT_NO_OPEN_QUOTE,
|
||
eCSSKeyword_no_close_quote, NS_STYLE_CONTENT_NO_CLOSE_QUOTE,
|
||
eCSSKeyword_UNKNOWN,-1
|
||
};
|
||
|
||
static const int32_t kContentSolitaryKWs[] = {
|
||
eCSSKeyword__moz_alt_content, NS_STYLE_CONTENT_ALT_CONTENT,
|
||
eCSSKeyword_UNKNOWN,-1
|
||
};
|
||
|
||
// Verify that these two lists add up to the size of
|
||
// nsCSSProps::kContentKTable.
|
||
NS_ABORT_IF_FALSE(nsCSSProps::kContentKTable[
|
||
ArrayLength(kContentListKWs) +
|
||
ArrayLength(kContentSolitaryKWs) - 4] ==
|
||
eCSSKeyword_UNKNOWN &&
|
||
nsCSSProps::kContentKTable[
|
||
ArrayLength(kContentListKWs) +
|
||
ArrayLength(kContentSolitaryKWs) - 3] == -1,
|
||
"content keyword tables out of sync");
|
||
|
||
nsCSSValue value;
|
||
if (ParseVariant(value, VARIANT_HMK | VARIANT_NONE,
|
||
kContentSolitaryKWs)) {
|
||
// 'inherit', 'initial', 'unset', 'normal', 'none', and 'alt-content' must
|
||
// be alone
|
||
if (!ExpectEndProperty()) {
|
||
return false;
|
||
}
|
||
} else {
|
||
nsCSSValueList* cur = value.SetListValue();
|
||
for (;;) {
|
||
if (!ParseVariant(cur->mValue, VARIANT_CONTENT, kContentListKWs)) {
|
||
return false;
|
||
}
|
||
if (CheckEndProperty()) {
|
||
break;
|
||
}
|
||
cur->mNext = new nsCSSValueList;
|
||
cur = cur->mNext;
|
||
}
|
||
}
|
||
AppendValue(eCSSProperty_content, value);
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseCounterData(nsCSSProperty aPropID)
|
||
{
|
||
nsCSSValue value;
|
||
if (!ParseVariant(value, VARIANT_INHERIT | VARIANT_NONE, nullptr)) {
|
||
if (!GetToken(true) || mToken.mType != eCSSToken_Ident) {
|
||
return false;
|
||
}
|
||
|
||
nsCSSValuePairList *cur = value.SetPairListValue();
|
||
for (;;) {
|
||
// check for "none", "default" and the CSS-wide keywords,
|
||
// which can't be used as counter names
|
||
nsCSSKeyword keyword = nsCSSKeywords::LookupKeyword(mToken.mIdent);
|
||
if (keyword == eCSSKeyword_inherit ||
|
||
keyword == eCSSKeyword_default ||
|
||
keyword == eCSSKeyword_none ||
|
||
keyword == eCSSKeyword_unset ||
|
||
keyword == eCSSKeyword_initial) {
|
||
return false;
|
||
}
|
||
cur->mXValue.SetStringValue(mToken.mIdent, eCSSUnit_Ident);
|
||
if (!GetToken(true)) {
|
||
break;
|
||
}
|
||
if (mToken.mType == eCSSToken_Number && mToken.mIntegerValid) {
|
||
cur->mYValue.SetIntValue(mToken.mInteger, eCSSUnit_Integer);
|
||
} else {
|
||
UngetToken();
|
||
}
|
||
if (CheckEndProperty()) {
|
||
break;
|
||
}
|
||
if (!GetToken(true) || mToken.mType != eCSSToken_Ident) {
|
||
return false;
|
||
}
|
||
cur->mNext = new nsCSSValuePairList;
|
||
cur = cur->mNext;
|
||
}
|
||
}
|
||
AppendValue(aPropID, value);
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseCursor()
|
||
{
|
||
nsCSSValue value;
|
||
if (ParseVariant(value, VARIANT_INHERIT, nullptr)) {
|
||
// 'inherit', 'initial' and 'unset' must be alone
|
||
if (!ExpectEndProperty()) {
|
||
return false;
|
||
}
|
||
} else {
|
||
nsCSSValueList* cur = value.SetListValue();
|
||
for (;;) {
|
||
if (!ParseVariant(cur->mValue, VARIANT_UK, nsCSSProps::kCursorKTable)) {
|
||
return false;
|
||
}
|
||
if (cur->mValue.GetUnit() != eCSSUnit_URL) { // keyword must be last
|
||
if (ExpectEndProperty()) {
|
||
break;
|
||
}
|
||
return false;
|
||
}
|
||
|
||
// We have a URL, so make a value array with three values.
|
||
nsRefPtr<nsCSSValue::Array> val = nsCSSValue::Array::Create(3);
|
||
val->Item(0) = cur->mValue;
|
||
|
||
// Parse optional x and y position of cursor hotspot (css3-ui).
|
||
if (ParseVariant(val->Item(1), VARIANT_NUMBER, nullptr)) {
|
||
// If we have one number, we must have two.
|
||
if (!ParseVariant(val->Item(2), VARIANT_NUMBER, nullptr)) {
|
||
return false;
|
||
}
|
||
}
|
||
cur->mValue.SetArrayValue(val, eCSSUnit_Array);
|
||
|
||
if (!ExpectSymbol(',', true)) { // url must not be last
|
||
return false;
|
||
}
|
||
cur->mNext = new nsCSSValueList;
|
||
cur = cur->mNext;
|
||
}
|
||
}
|
||
AppendValue(eCSSProperty_cursor, value);
|
||
return true;
|
||
}
|
||
|
||
|
||
bool
|
||
CSSParserImpl::ParseFont()
|
||
{
|
||
static const nsCSSProperty fontIDs[] = {
|
||
eCSSProperty_font_style,
|
||
eCSSProperty_font_variant,
|
||
eCSSProperty_font_weight
|
||
};
|
||
|
||
// font-variant-alternates enabled ==> layout.css.font-features.enabled is true
|
||
bool featuresEnabled =
|
||
nsCSSProps::IsEnabled(eCSSProperty_font_variant_alternates);
|
||
nsCSSValue family;
|
||
if (ParseVariant(family, VARIANT_HK, nsCSSProps::kFontKTable)) {
|
||
if (ExpectEndProperty()) {
|
||
if (eCSSUnit_Inherit == family.GetUnit() ||
|
||
eCSSUnit_Initial == family.GetUnit() ||
|
||
eCSSUnit_Unset == family.GetUnit()) {
|
||
AppendValue(eCSSProperty__x_system_font, nsCSSValue(eCSSUnit_None));
|
||
AppendValue(eCSSProperty_font_family, family);
|
||
AppendValue(eCSSProperty_font_style, family);
|
||
AppendValue(eCSSProperty_font_variant, family);
|
||
AppendValue(eCSSProperty_font_weight, family);
|
||
AppendValue(eCSSProperty_font_size, family);
|
||
AppendValue(eCSSProperty_line_height, family);
|
||
AppendValue(eCSSProperty_font_stretch, family);
|
||
AppendValue(eCSSProperty_font_size_adjust, family);
|
||
AppendValue(eCSSProperty_font_feature_settings, family);
|
||
AppendValue(eCSSProperty_font_language_override, family);
|
||
if (featuresEnabled) {
|
||
AppendValue(eCSSProperty_font_kerning, family);
|
||
AppendValue(eCSSProperty_font_synthesis, family);
|
||
AppendValue(eCSSProperty_font_variant_alternates, family);
|
||
AppendValue(eCSSProperty_font_variant_caps, family);
|
||
AppendValue(eCSSProperty_font_variant_east_asian, family);
|
||
AppendValue(eCSSProperty_font_variant_ligatures, family);
|
||
AppendValue(eCSSProperty_font_variant_numeric, family);
|
||
AppendValue(eCSSProperty_font_variant_position, family);
|
||
}
|
||
}
|
||
else {
|
||
AppendValue(eCSSProperty__x_system_font, family);
|
||
nsCSSValue systemFont(eCSSUnit_System_Font);
|
||
AppendValue(eCSSProperty_font_family, systemFont);
|
||
AppendValue(eCSSProperty_font_style, systemFont);
|
||
AppendValue(eCSSProperty_font_variant, systemFont);
|
||
AppendValue(eCSSProperty_font_weight, systemFont);
|
||
AppendValue(eCSSProperty_font_size, systemFont);
|
||
AppendValue(eCSSProperty_line_height, systemFont);
|
||
AppendValue(eCSSProperty_font_stretch, systemFont);
|
||
AppendValue(eCSSProperty_font_size_adjust, systemFont);
|
||
AppendValue(eCSSProperty_font_feature_settings, systemFont);
|
||
AppendValue(eCSSProperty_font_language_override, systemFont);
|
||
if (featuresEnabled) {
|
||
AppendValue(eCSSProperty_font_kerning, systemFont);
|
||
AppendValue(eCSSProperty_font_synthesis, systemFont);
|
||
AppendValue(eCSSProperty_font_variant_alternates, systemFont);
|
||
AppendValue(eCSSProperty_font_variant_caps, systemFont);
|
||
AppendValue(eCSSProperty_font_variant_east_asian, systemFont);
|
||
AppendValue(eCSSProperty_font_variant_ligatures, systemFont);
|
||
AppendValue(eCSSProperty_font_variant_numeric, systemFont);
|
||
AppendValue(eCSSProperty_font_variant_position, systemFont);
|
||
}
|
||
}
|
||
return true;
|
||
}
|
||
return false;
|
||
}
|
||
|
||
// Get optional font-style, font-variant and font-weight (in any order)
|
||
const int32_t numProps = 3;
|
||
nsCSSValue values[numProps];
|
||
int32_t found = ParseChoice(values, fontIDs, numProps);
|
||
if (found < 0 ||
|
||
eCSSUnit_Inherit == values[0].GetUnit() ||
|
||
eCSSUnit_Initial == values[0].GetUnit() ||
|
||
eCSSUnit_Unset == values[0].GetUnit()) { // illegal data
|
||
return false;
|
||
}
|
||
if ((found & 1) == 0) {
|
||
// Provide default font-style
|
||
values[0].SetIntValue(NS_FONT_STYLE_NORMAL, eCSSUnit_Enumerated);
|
||
}
|
||
if ((found & 2) == 0) {
|
||
// Provide default font-variant
|
||
values[1].SetIntValue(NS_FONT_VARIANT_NORMAL, eCSSUnit_Enumerated);
|
||
}
|
||
if ((found & 4) == 0) {
|
||
// Provide default font-weight
|
||
values[2].SetIntValue(NS_FONT_WEIGHT_NORMAL, eCSSUnit_Enumerated);
|
||
}
|
||
|
||
// Get mandatory font-size
|
||
nsCSSValue size;
|
||
if (! ParseNonNegativeVariant(size, VARIANT_KEYWORD | VARIANT_LP,
|
||
nsCSSProps::kFontSizeKTable)) {
|
||
return false;
|
||
}
|
||
|
||
// Get optional "/" line-height
|
||
nsCSSValue lineHeight;
|
||
if (ExpectSymbol('/', true)) {
|
||
if (! ParseNonNegativeVariant(lineHeight,
|
||
VARIANT_NUMBER | VARIANT_LP | VARIANT_NORMAL,
|
||
nullptr)) {
|
||
return false;
|
||
}
|
||
}
|
||
else {
|
||
lineHeight.SetNormalValue();
|
||
}
|
||
|
||
// Get final mandatory font-family
|
||
nsAutoParseCompoundProperty compound(this);
|
||
if (ParseFamily(family)) {
|
||
if (eCSSUnit_Inherit != family.GetUnit() &&
|
||
eCSSUnit_Initial != family.GetUnit() &&
|
||
eCSSUnit_Unset != family.GetUnit() &&
|
||
ExpectEndProperty()) {
|
||
AppendValue(eCSSProperty__x_system_font, nsCSSValue(eCSSUnit_None));
|
||
AppendValue(eCSSProperty_font_family, family);
|
||
AppendValue(eCSSProperty_font_style, values[0]);
|
||
AppendValue(eCSSProperty_font_variant, values[1]);
|
||
AppendValue(eCSSProperty_font_weight, values[2]);
|
||
AppendValue(eCSSProperty_font_size, size);
|
||
AppendValue(eCSSProperty_line_height, lineHeight);
|
||
AppendValue(eCSSProperty_font_stretch,
|
||
nsCSSValue(NS_FONT_STRETCH_NORMAL, eCSSUnit_Enumerated));
|
||
AppendValue(eCSSProperty_font_size_adjust, nsCSSValue(eCSSUnit_None));
|
||
AppendValue(eCSSProperty_font_feature_settings, nsCSSValue(eCSSUnit_Normal));
|
||
AppendValue(eCSSProperty_font_language_override, nsCSSValue(eCSSUnit_Normal));
|
||
if (featuresEnabled) {
|
||
AppendValue(eCSSProperty_font_kerning,
|
||
nsCSSValue(NS_FONT_KERNING_AUTO, eCSSUnit_Enumerated));
|
||
AppendValue(eCSSProperty_font_synthesis,
|
||
nsCSSValue(NS_FONT_SYNTHESIS_WEIGHT | NS_FONT_SYNTHESIS_STYLE,
|
||
eCSSUnit_Enumerated));
|
||
AppendValue(eCSSProperty_font_variant_alternates,
|
||
nsCSSValue(eCSSUnit_Normal));
|
||
AppendValue(eCSSProperty_font_variant_caps, nsCSSValue(eCSSUnit_Normal));
|
||
AppendValue(eCSSProperty_font_variant_east_asian,
|
||
nsCSSValue(eCSSUnit_Normal));
|
||
AppendValue(eCSSProperty_font_variant_ligatures,
|
||
nsCSSValue(eCSSUnit_Normal));
|
||
AppendValue(eCSSProperty_font_variant_numeric,
|
||
nsCSSValue(eCSSUnit_Normal));
|
||
AppendValue(eCSSProperty_font_variant_position,
|
||
nsCSSValue(eCSSUnit_Normal));
|
||
}
|
||
return true;
|
||
}
|
||
}
|
||
return false;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseFontSynthesis(nsCSSValue& aValue)
|
||
{
|
||
if (!ParseVariant(aValue, VARIANT_HK | VARIANT_NONE,
|
||
nsCSSProps::kFontSynthesisKTable)) {
|
||
return false;
|
||
}
|
||
|
||
// first value 'none' ==> done
|
||
if (eCSSUnit_None == aValue.GetUnit() ||
|
||
eCSSUnit_Initial == aValue.GetUnit() ||
|
||
eCSSUnit_Inherit == aValue.GetUnit() ||
|
||
eCSSUnit_Unset == aValue.GetUnit())
|
||
{
|
||
return true;
|
||
}
|
||
|
||
// look for a second value
|
||
int32_t intValue = aValue.GetIntValue();
|
||
nsCSSValue nextValue;
|
||
|
||
if (ParseEnum(nextValue, nsCSSProps::kFontSynthesisKTable)) {
|
||
int32_t nextIntValue = nextValue.GetIntValue();
|
||
if (nextIntValue & intValue) {
|
||
return false;
|
||
}
|
||
aValue.SetIntValue(nextIntValue | intValue, eCSSUnit_Enumerated);
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
// font-variant-alternates allows for a combination of multiple
|
||
// simple enumerated values and functional values. Functional values have
|
||
// parameter lists with one or more idents which are later resolved
|
||
// based on values defined in @font-feature-value rules.
|
||
//
|
||
// font-variant-alternates: swash(flowing), historical-forms, styleset(alt-g, alt-m);
|
||
//
|
||
// So for this the nsCSSValue is set to a pair value, with one
|
||
// value for a bitmask of both simple and functional property values
|
||
// and another value containing a ValuePairList with lists of idents
|
||
// for each functional property value.
|
||
//
|
||
// pairValue
|
||
// o intValue
|
||
// NS_FONT_VARIANT_ALTERNATES_SWASH |
|
||
// NS_FONT_VARIANT_ALTERNATES_STYLESET
|
||
// o valuePairList, each element with
|
||
// - intValue - indicates which alternate
|
||
// - string or valueList of strings
|
||
//
|
||
// Note: when only 'historical-forms' is specified, there are no
|
||
// functional values to store, in which case the valuePairList is a
|
||
// single element dummy list. In all other cases, the length of the
|
||
// list will match the number of functional values.
|
||
|
||
#define MAX_ALLOWED_FEATURES 512
|
||
|
||
bool
|
||
CSSParserImpl::ParseSingleAlternate(int32_t& aWhichFeature,
|
||
nsCSSValue& aValue)
|
||
{
|
||
if (!GetToken(true)) {
|
||
return false;
|
||
}
|
||
|
||
bool isIdent = (mToken.mType == eCSSToken_Ident);
|
||
if (mToken.mType != eCSSToken_Function && !isIdent) {
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
|
||
// ident ==> simple enumerated prop val (e.g. historical-forms)
|
||
// function ==> e.g. swash(flowing) styleset(alt-g, alt-m)
|
||
|
||
nsCSSKeyword keyword = nsCSSKeywords::LookupKeyword(mToken.mIdent);
|
||
if (!(eCSSKeyword_UNKNOWN < keyword &&
|
||
nsCSSProps::FindKeyword(keyword,
|
||
(isIdent ?
|
||
nsCSSProps::kFontVariantAlternatesKTable :
|
||
nsCSSProps::kFontVariantAlternatesFuncsKTable),
|
||
aWhichFeature)))
|
||
{
|
||
// failed, pop token
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
|
||
if (isIdent) {
|
||
aValue.SetIntValue(aWhichFeature, eCSSUnit_Enumerated);
|
||
return true;
|
||
}
|
||
|
||
uint16_t maxElems = 1;
|
||
if (keyword == eCSSKeyword_styleset ||
|
||
keyword == eCSSKeyword_character_variant) {
|
||
maxElems = MAX_ALLOWED_FEATURES;
|
||
}
|
||
return ParseFunction(keyword, nullptr, VARIANT_IDENTIFIER,
|
||
1, maxElems, aValue);
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseFontVariantAlternates(nsCSSValue& aValue)
|
||
{
|
||
if (ParseVariant(aValue, VARIANT_INHERIT | VARIANT_NORMAL, nullptr)) {
|
||
return true;
|
||
}
|
||
|
||
// iterate through parameters
|
||
nsCSSValue listValue;
|
||
int32_t feature, featureFlags = 0;
|
||
|
||
// if no functional values, this may be a list with a single, unused element
|
||
listValue.SetListValue();
|
||
|
||
nsCSSValueList* list = nullptr;
|
||
nsCSSValue value;
|
||
while (ParseSingleAlternate(feature, value)) {
|
||
|
||
// check to make sure value not already set
|
||
if (feature == 0 ||
|
||
feature & featureFlags) {
|
||
return false;
|
||
}
|
||
|
||
featureFlags |= feature;
|
||
|
||
// if function, need to add to the list of functions
|
||
if (value.GetUnit() == eCSSUnit_Function) {
|
||
if (!list) {
|
||
list = listValue.GetListValue();
|
||
} else {
|
||
list->mNext = new nsCSSValueList;
|
||
list = list->mNext;
|
||
}
|
||
list->mValue = value;
|
||
}
|
||
}
|
||
|
||
nsCSSValue featureValue;
|
||
featureValue.SetIntValue(featureFlags, eCSSUnit_Enumerated);
|
||
aValue.SetPairValue(featureValue, listValue);
|
||
|
||
return true;
|
||
}
|
||
|
||
#define MASK_END_VALUE -1
|
||
|
||
// aMasks - array of masks for mutually-exclusive property values,
|
||
// e.g. proportial-nums, tabular-nums
|
||
|
||
bool
|
||
CSSParserImpl::ParseBitmaskValues(nsCSSValue& aValue,
|
||
const int32_t aKeywordTable[],
|
||
const int32_t aMasks[])
|
||
{
|
||
if (!ParseVariant(aValue, VARIANT_HMK, aKeywordTable)) {
|
||
return false;
|
||
}
|
||
|
||
// first value 'normal', 'inherit', 'unset', 'initial', 'unset' ==> done
|
||
if (eCSSUnit_Normal == aValue.GetUnit() ||
|
||
eCSSUnit_Initial == aValue.GetUnit() ||
|
||
eCSSUnit_Inherit == aValue.GetUnit() ||
|
||
eCSSUnit_Unset == aValue.GetUnit())
|
||
{
|
||
return true;
|
||
}
|
||
|
||
// look for more values
|
||
nsCSSValue nextValue;
|
||
int32_t mergedValue = aValue.GetIntValue();
|
||
|
||
while (ParseEnum(nextValue, aKeywordTable))
|
||
{
|
||
int32_t nextIntValue = nextValue.GetIntValue();
|
||
|
||
// check to make sure value not already set
|
||
if (nextIntValue & mergedValue) {
|
||
return false;
|
||
}
|
||
|
||
const int32_t *m = aMasks;
|
||
int32_t c = 0;
|
||
|
||
while (*m != MASK_END_VALUE) {
|
||
if (*m & nextIntValue) {
|
||
c = mergedValue & *m;
|
||
break;
|
||
}
|
||
m++;
|
||
}
|
||
|
||
if (c) {
|
||
return false;
|
||
}
|
||
|
||
mergedValue |= nextIntValue;
|
||
}
|
||
|
||
aValue.SetIntValue(mergedValue, eCSSUnit_Enumerated);
|
||
|
||
return true;
|
||
}
|
||
|
||
static const int32_t maskEastAsian[] = {
|
||
NS_FONT_VARIANT_EAST_ASIAN_VARIANT_MASK,
|
||
NS_FONT_VARIANT_EAST_ASIAN_WIDTH_MASK,
|
||
MASK_END_VALUE
|
||
};
|
||
|
||
bool
|
||
CSSParserImpl::ParseFontVariantEastAsian(nsCSSValue& aValue)
|
||
{
|
||
NS_ASSERTION(maskEastAsian[NS_ARRAY_LENGTH(maskEastAsian) - 1] ==
|
||
MASK_END_VALUE,
|
||
"incorrectly terminated array");
|
||
|
||
return ParseBitmaskValues(aValue, nsCSSProps::kFontVariantEastAsianKTable,
|
||
maskEastAsian);
|
||
}
|
||
|
||
static const int32_t maskLigatures[] = {
|
||
NS_FONT_VARIANT_LIGATURES_COMMON_MASK,
|
||
NS_FONT_VARIANT_LIGATURES_DISCRETIONARY_MASK,
|
||
NS_FONT_VARIANT_LIGATURES_HISTORICAL_MASK,
|
||
NS_FONT_VARIANT_LIGATURES_CONTEXTUAL_MASK,
|
||
MASK_END_VALUE
|
||
};
|
||
|
||
bool
|
||
CSSParserImpl::ParseFontVariantLigatures(nsCSSValue& aValue)
|
||
{
|
||
NS_ASSERTION(maskLigatures[NS_ARRAY_LENGTH(maskLigatures) - 1] ==
|
||
MASK_END_VALUE,
|
||
"incorrectly terminated array");
|
||
|
||
bool parsed =
|
||
ParseBitmaskValues(aValue, nsCSSProps::kFontVariantLigaturesKTable,
|
||
maskLigatures);
|
||
|
||
// if none value included, no other values are possible
|
||
if (parsed && eCSSUnit_Enumerated == aValue.GetUnit()) {
|
||
int32_t val = aValue.GetIntValue();
|
||
if ((val & NS_FONT_VARIANT_LIGATURES_NONE) &&
|
||
(val & ~int32_t(NS_FONT_VARIANT_LIGATURES_NONE))) {
|
||
parsed = false;
|
||
}
|
||
}
|
||
|
||
return parsed;
|
||
}
|
||
|
||
static const int32_t maskNumeric[] = {
|
||
NS_FONT_VARIANT_NUMERIC_FIGURE_MASK,
|
||
NS_FONT_VARIANT_NUMERIC_SPACING_MASK,
|
||
NS_FONT_VARIANT_NUMERIC_FRACTION_MASK,
|
||
MASK_END_VALUE
|
||
};
|
||
|
||
bool
|
||
CSSParserImpl::ParseFontVariantNumeric(nsCSSValue& aValue)
|
||
{
|
||
NS_ASSERTION(maskNumeric[NS_ARRAY_LENGTH(maskNumeric) - 1] ==
|
||
MASK_END_VALUE,
|
||
"incorrectly terminated array");
|
||
|
||
return ParseBitmaskValues(aValue, nsCSSProps::kFontVariantNumericKTable,
|
||
maskNumeric);
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseFontWeight(nsCSSValue& aValue)
|
||
{
|
||
if (ParseVariant(aValue, VARIANT_HKI | VARIANT_SYSFONT,
|
||
nsCSSProps::kFontWeightKTable)) {
|
||
if (eCSSUnit_Integer == aValue.GetUnit()) { // ensure unit value
|
||
int32_t intValue = aValue.GetIntValue();
|
||
if ((100 <= intValue) &&
|
||
(intValue <= 900) &&
|
||
(0 == (intValue % 100))) {
|
||
return true;
|
||
} else {
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
}
|
||
return true;
|
||
}
|
||
return false;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseOneFamily(nsAString& aFamily, bool& aOneKeyword)
|
||
{
|
||
if (!GetToken(true))
|
||
return false;
|
||
|
||
nsCSSToken* tk = &mToken;
|
||
|
||
aOneKeyword = false;
|
||
if (eCSSToken_Ident == tk->mType) {
|
||
aOneKeyword = true;
|
||
aFamily.Append(tk->mIdent);
|
||
for (;;) {
|
||
if (!GetToken(false))
|
||
break;
|
||
|
||
if (eCSSToken_Ident == tk->mType) {
|
||
aOneKeyword = false;
|
||
// We had at least another keyword before.
|
||
// "If a sequence of identifiers is given as a font family name,
|
||
// the computed value is the name converted to a string by joining
|
||
// all the identifiers in the sequence by single spaces."
|
||
// -- CSS 2.1, section 15.3
|
||
// Whitespace tokens do not actually matter,
|
||
// identifier tokens can be separated by comments.
|
||
aFamily.Append(char16_t(' '));
|
||
aFamily.Append(tk->mIdent);
|
||
} else if (eCSSToken_Whitespace != tk->mType) {
|
||
UngetToken();
|
||
break;
|
||
}
|
||
}
|
||
return true;
|
||
|
||
} else if (eCSSToken_String == tk->mType) {
|
||
aFamily.Append(tk->mSymbol); // replace the quotes
|
||
aFamily.Append(tk->mIdent); // XXX What if it had escaped quotes?
|
||
aFamily.Append(tk->mSymbol);
|
||
return true;
|
||
|
||
} else {
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseFamily(nsCSSValue& aValue)
|
||
{
|
||
nsAutoString family;
|
||
bool single;
|
||
|
||
// keywords only have meaning in the first position
|
||
if (!ParseOneFamily(family, single))
|
||
return false;
|
||
|
||
// check for keywords, but only when keywords appear by themselves
|
||
// i.e. not in compounds such as font-family: default blah;
|
||
if (single) {
|
||
nsCSSKeyword keyword = nsCSSKeywords::LookupKeyword(family);
|
||
if (keyword == eCSSKeyword_inherit) {
|
||
aValue.SetInheritValue();
|
||
return true;
|
||
}
|
||
// 605231 - don't parse unquoted 'default' reserved keyword
|
||
if (keyword == eCSSKeyword_default) {
|
||
return false;
|
||
}
|
||
if (keyword == eCSSKeyword_initial) {
|
||
aValue.SetInitialValue();
|
||
return true;
|
||
}
|
||
if (keyword == eCSSKeyword_unset &&
|
||
nsLayoutUtils::UnsetValueEnabled()) {
|
||
aValue.SetUnsetValue();
|
||
return true;
|
||
}
|
||
if (keyword == eCSSKeyword__moz_use_system_font &&
|
||
!IsParsingCompoundProperty()) {
|
||
aValue.SetSystemFontValue();
|
||
return true;
|
||
}
|
||
}
|
||
|
||
for (;;) {
|
||
if (!ExpectSymbol(',', true))
|
||
break;
|
||
|
||
family.Append(char16_t(','));
|
||
|
||
nsAutoString nextFamily;
|
||
if (!ParseOneFamily(nextFamily, single))
|
||
return false;
|
||
|
||
// at this point unquoted keywords are not allowed
|
||
// as font family names but can appear within names
|
||
if (single) {
|
||
nsCSSKeyword keyword = nsCSSKeywords::LookupKeyword(nextFamily);
|
||
switch (keyword) {
|
||
case eCSSKeyword_inherit:
|
||
case eCSSKeyword_initial:
|
||
case eCSSKeyword_default:
|
||
case eCSSKeyword__moz_use_system_font:
|
||
return false;
|
||
case eCSSKeyword_unset:
|
||
if (nsLayoutUtils::UnsetValueEnabled()) {
|
||
return false;
|
||
}
|
||
// fall through
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
|
||
family.Append(nextFamily);
|
||
}
|
||
|
||
if (family.IsEmpty()) {
|
||
return false;
|
||
}
|
||
aValue.SetStringValue(family, eCSSUnit_Families);
|
||
return true;
|
||
}
|
||
|
||
// src: ( uri-src | local-src ) (',' ( uri-src | local-src ) )*
|
||
// uri-src: uri [ 'format(' string ( ',' string )* ')' ]
|
||
// local-src: 'local(' ( string | ident ) ')'
|
||
|
||
bool
|
||
CSSParserImpl::ParseFontSrc(nsCSSValue& aValue)
|
||
{
|
||
// could we maybe turn nsCSSValue::Array into InfallibleTArray<nsCSSValue>?
|
||
InfallibleTArray<nsCSSValue> values;
|
||
nsCSSValue cur;
|
||
for (;;) {
|
||
if (!GetToken(true))
|
||
break;
|
||
|
||
if (mToken.mType == eCSSToken_URL) {
|
||
SetValueToURL(cur, mToken.mIdent);
|
||
values.AppendElement(cur);
|
||
if (!ParseFontSrcFormat(values))
|
||
return false;
|
||
|
||
} else if (mToken.mType == eCSSToken_Function &&
|
||
mToken.mIdent.LowerCaseEqualsLiteral("local")) {
|
||
// css3-fonts does not specify a formal grammar for local().
|
||
// The text permits both unquoted identifiers and quoted
|
||
// strings. We resolve this ambiguity in the spec by
|
||
// assuming that the appropriate production is a single
|
||
// <family-name>, possibly surrounded by whitespace.
|
||
|
||
nsAutoString family;
|
||
bool single;
|
||
if (!ParseOneFamily(family, single)) {
|
||
SkipUntil(')');
|
||
return false;
|
||
}
|
||
if (!ExpectSymbol(')', true)) {
|
||
SkipUntil(')');
|
||
return false;
|
||
}
|
||
|
||
// the style parameters to the nsFont constructor are ignored,
|
||
// because it's only being used to call EnumerateFamilies
|
||
nsFont font(family, 0, 0, 0, 0, 0, 0);
|
||
ExtractFirstFamilyData dat;
|
||
|
||
font.EnumerateFamilies(ExtractFirstFamily, (void*) &dat);
|
||
if (!dat.mGood)
|
||
return false;
|
||
|
||
cur.SetStringValue(dat.mFamilyName, eCSSUnit_Local_Font);
|
||
values.AppendElement(cur);
|
||
} else {
|
||
// We don't know what to do with this token; unget it and error out
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
|
||
if (!ExpectSymbol(',', true))
|
||
break;
|
||
}
|
||
|
||
if (values.Length() == 0)
|
||
return false;
|
||
|
||
nsRefPtr<nsCSSValue::Array> srcVals
|
||
= nsCSSValue::Array::Create(values.Length());
|
||
|
||
uint32_t i;
|
||
for (i = 0; i < values.Length(); i++)
|
||
srcVals->Item(i) = values[i];
|
||
aValue.SetArrayValue(srcVals, eCSSUnit_Array);
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseFontSrcFormat(InfallibleTArray<nsCSSValue> & values)
|
||
{
|
||
if (!GetToken(true))
|
||
return true; // EOF harmless here
|
||
if (mToken.mType != eCSSToken_Function ||
|
||
!mToken.mIdent.LowerCaseEqualsLiteral("format")) {
|
||
UngetToken();
|
||
return true;
|
||
}
|
||
|
||
do {
|
||
if (!GetToken(true))
|
||
return false; // EOF - no need for SkipUntil
|
||
|
||
if (mToken.mType != eCSSToken_String) {
|
||
UngetToken();
|
||
SkipUntil(')');
|
||
return false;
|
||
}
|
||
|
||
nsCSSValue cur(mToken.mIdent, eCSSUnit_Font_Format);
|
||
values.AppendElement(cur);
|
||
} while (ExpectSymbol(',', true));
|
||
|
||
if (!ExpectSymbol(')', true)) {
|
||
SkipUntil(')');
|
||
return false;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
// font-ranges: urange ( ',' urange )*
|
||
bool
|
||
CSSParserImpl::ParseFontRanges(nsCSSValue& aValue)
|
||
{
|
||
InfallibleTArray<uint32_t> ranges;
|
||
for (;;) {
|
||
if (!GetToken(true))
|
||
break;
|
||
|
||
if (mToken.mType != eCSSToken_URange) {
|
||
UngetToken();
|
||
break;
|
||
}
|
||
|
||
// An invalid range token is a parsing error, causing the entire
|
||
// descriptor to be ignored.
|
||
if (!mToken.mIntegerValid)
|
||
return false;
|
||
|
||
uint32_t low = mToken.mInteger;
|
||
uint32_t high = mToken.mInteger2;
|
||
|
||
// A range that descends, or a range that is entirely outside the
|
||
// current range of Unicode (U+0-10FFFF) is ignored, but does not
|
||
// invalidate the descriptor. A range that straddles the high end
|
||
// is clipped.
|
||
if (low <= 0x10FFFF && low <= high) {
|
||
if (high > 0x10FFFF)
|
||
high = 0x10FFFF;
|
||
|
||
ranges.AppendElement(low);
|
||
ranges.AppendElement(high);
|
||
}
|
||
if (!ExpectSymbol(',', true))
|
||
break;
|
||
}
|
||
|
||
if (ranges.Length() == 0)
|
||
return false;
|
||
|
||
nsRefPtr<nsCSSValue::Array> srcVals
|
||
= nsCSSValue::Array::Create(ranges.Length());
|
||
|
||
for (uint32_t i = 0; i < ranges.Length(); i++)
|
||
srcVals->Item(i).SetIntValue(ranges[i], eCSSUnit_Integer);
|
||
aValue.SetArrayValue(srcVals, eCSSUnit_Array);
|
||
return true;
|
||
}
|
||
|
||
// font-feature-settings: normal | <feature-tag-value> [, <feature-tag-value>]*
|
||
// <feature-tag-value> = <string> [ <integer> | on | off ]?
|
||
|
||
// minimum - "tagx", "tagy", "tagz"
|
||
// edge error case - "tagx" on 1, "tagx" "tagy", "tagx" -1, "tagx" big
|
||
|
||
// pair value is always x = string, y = int
|
||
|
||
// font feature tags must be four ASCII characters
|
||
#define FEATURE_TAG_LENGTH 4
|
||
|
||
static bool
|
||
ValidFontFeatureTag(const nsString& aTag)
|
||
{
|
||
if (aTag.Length() != FEATURE_TAG_LENGTH) {
|
||
return false;
|
||
}
|
||
uint32_t i;
|
||
for (i = 0; i < FEATURE_TAG_LENGTH; i++) {
|
||
uint32_t ch = aTag[i];
|
||
if (ch < 0x20 || ch > 0x7e) {
|
||
return false;
|
||
}
|
||
}
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseFontFeatureSettings(nsCSSValue& aValue)
|
||
{
|
||
if (ParseVariant(aValue, VARIANT_INHERIT | VARIANT_NORMAL, nullptr)) {
|
||
return true;
|
||
}
|
||
|
||
nsCSSValuePairList *cur = aValue.SetPairListValue();
|
||
for (;;) {
|
||
// feature tag
|
||
if (!GetToken(true)) {
|
||
return false;
|
||
}
|
||
|
||
if (mToken.mType != eCSSToken_String ||
|
||
!ValidFontFeatureTag(mToken.mIdent)) {
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
cur->mXValue.SetStringValue(mToken.mIdent, eCSSUnit_String);
|
||
|
||
if (!GetToken(true)) {
|
||
cur->mYValue.SetIntValue(1, eCSSUnit_Integer);
|
||
break;
|
||
}
|
||
|
||
// optional value or on/off keyword
|
||
if (mToken.mType == eCSSToken_Number && mToken.mIntegerValid &&
|
||
mToken.mInteger >= 0) {
|
||
cur->mYValue.SetIntValue(mToken.mInteger, eCSSUnit_Integer);
|
||
} else if (mToken.mType == eCSSToken_Ident &&
|
||
mToken.mIdent.LowerCaseEqualsLiteral("on")) {
|
||
cur->mYValue.SetIntValue(1, eCSSUnit_Integer);
|
||
} else if (mToken.mType == eCSSToken_Ident &&
|
||
mToken.mIdent.LowerCaseEqualsLiteral("off")) {
|
||
cur->mYValue.SetIntValue(0, eCSSUnit_Integer);
|
||
} else {
|
||
// something other than value/on/off, set default value
|
||
cur->mYValue.SetIntValue(1, eCSSUnit_Integer);
|
||
UngetToken();
|
||
}
|
||
|
||
if (!ExpectSymbol(',', true)) {
|
||
break;
|
||
}
|
||
|
||
cur->mNext = new nsCSSValuePairList;
|
||
cur = cur->mNext;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseListStyle()
|
||
{
|
||
// 'list-style' can accept 'none' for two different subproperties,
|
||
// 'list-style-type' and 'list-style-position'. In order to accept
|
||
// 'none' as the value of either but still allow another value for
|
||
// either, we need to ensure that the first 'none' we find gets
|
||
// allocated to a dummy property instead.
|
||
static const nsCSSProperty listStyleIDs[] = {
|
||
eCSSPropertyExtra_x_none_value,
|
||
eCSSProperty_list_style_type,
|
||
eCSSProperty_list_style_position,
|
||
eCSSProperty_list_style_image
|
||
};
|
||
|
||
nsCSSValue values[NS_ARRAY_LENGTH(listStyleIDs)];
|
||
int32_t found =
|
||
ParseChoice(values, listStyleIDs, ArrayLength(listStyleIDs));
|
||
if (found < 1 || !ExpectEndProperty()) {
|
||
return false;
|
||
}
|
||
|
||
if ((found & (1|2|8)) == (1|2|8)) {
|
||
if (values[0].GetUnit() == eCSSUnit_None) {
|
||
// We found a 'none' plus another value for both of
|
||
// 'list-style-type' and 'list-style-image'. This is a parse
|
||
// error, since the 'none' has to count for at least one of them.
|
||
return false;
|
||
} else {
|
||
NS_ASSERTION(found == (1|2|4|8) && values[0] == values[1] &&
|
||
values[0] == values[2] && values[0] == values[3],
|
||
"should be a special value");
|
||
}
|
||
}
|
||
|
||
// Provide default values
|
||
if ((found & 2) == 0) {
|
||
if (found & 1) {
|
||
values[1].SetIntValue(NS_STYLE_LIST_STYLE_NONE, eCSSUnit_Enumerated);
|
||
} else {
|
||
values[1].SetIntValue(NS_STYLE_LIST_STYLE_DISC, eCSSUnit_Enumerated);
|
||
}
|
||
}
|
||
if ((found & 4) == 0) {
|
||
values[2].SetIntValue(NS_STYLE_LIST_STYLE_POSITION_OUTSIDE,
|
||
eCSSUnit_Enumerated);
|
||
}
|
||
if ((found & 8) == 0) {
|
||
values[3].SetNoneValue();
|
||
}
|
||
|
||
// Start at 1 to avoid appending fake value.
|
||
for (uint32_t index = 1; index < ArrayLength(listStyleIDs); ++index) {
|
||
AppendValue(listStyleIDs[index], values[index]);
|
||
}
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseMargin()
|
||
{
|
||
static const nsCSSProperty kMarginSideIDs[] = {
|
||
eCSSProperty_margin_top,
|
||
eCSSProperty_margin_right_value,
|
||
eCSSProperty_margin_bottom,
|
||
eCSSProperty_margin_left_value
|
||
};
|
||
static const nsCSSProperty kMarginSources[] = {
|
||
eCSSProperty_margin_left_ltr_source,
|
||
eCSSProperty_margin_left_rtl_source,
|
||
eCSSProperty_margin_right_ltr_source,
|
||
eCSSProperty_margin_right_rtl_source,
|
||
eCSSProperty_UNKNOWN
|
||
};
|
||
|
||
// do this now, in case 4 values weren't specified
|
||
InitBoxPropsAsPhysical(kMarginSources);
|
||
return ParseBoxProperties(kMarginSideIDs);
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseMarks(nsCSSValue& aValue)
|
||
{
|
||
if (ParseVariant(aValue, VARIANT_HK, nsCSSProps::kPageMarksKTable)) {
|
||
if (eCSSUnit_Enumerated == aValue.GetUnit()) {
|
||
if (NS_STYLE_PAGE_MARKS_NONE != aValue.GetIntValue() &&
|
||
false == CheckEndProperty()) {
|
||
nsCSSValue second;
|
||
if (ParseEnum(second, nsCSSProps::kPageMarksKTable)) {
|
||
// 'none' keyword in conjuction with others is not allowed
|
||
if (NS_STYLE_PAGE_MARKS_NONE != second.GetIntValue()) {
|
||
aValue.SetIntValue(aValue.GetIntValue() | second.GetIntValue(),
|
||
eCSSUnit_Enumerated);
|
||
return true;
|
||
}
|
||
}
|
||
return false;
|
||
}
|
||
}
|
||
return true;
|
||
}
|
||
return false;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseOutline()
|
||
{
|
||
const int32_t numProps = 3;
|
||
static const nsCSSProperty kOutlineIDs[] = {
|
||
eCSSProperty_outline_color,
|
||
eCSSProperty_outline_style,
|
||
eCSSProperty_outline_width
|
||
};
|
||
|
||
nsCSSValue values[numProps];
|
||
int32_t found = ParseChoice(values, kOutlineIDs, numProps);
|
||
if ((found < 1) || (false == ExpectEndProperty())) {
|
||
return false;
|
||
}
|
||
|
||
// Provide default values
|
||
if ((found & 1) == 0) { // Provide default outline-color
|
||
values[0].SetIntValue(NS_STYLE_COLOR_MOZ_USE_TEXT_COLOR, eCSSUnit_Enumerated);
|
||
}
|
||
if ((found & 2) == 0) { // Provide default outline-style
|
||
values[1].SetIntValue(NS_STYLE_BORDER_STYLE_NONE, eCSSUnit_Enumerated);
|
||
}
|
||
if ((found & 4) == 0) { // Provide default outline-width
|
||
values[2].SetIntValue(NS_STYLE_BORDER_WIDTH_MEDIUM, eCSSUnit_Enumerated);
|
||
}
|
||
|
||
int32_t index;
|
||
for (index = 0; index < numProps; index++) {
|
||
AppendValue(kOutlineIDs[index], values[index]);
|
||
}
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseOverflow()
|
||
{
|
||
nsCSSValue overflow;
|
||
if (!ParseVariant(overflow, VARIANT_HK,
|
||
nsCSSProps::kOverflowKTable) ||
|
||
!ExpectEndProperty())
|
||
return false;
|
||
|
||
nsCSSValue overflowX(overflow);
|
||
nsCSSValue overflowY(overflow);
|
||
if (eCSSUnit_Enumerated == overflow.GetUnit())
|
||
switch(overflow.GetIntValue()) {
|
||
case NS_STYLE_OVERFLOW_SCROLLBARS_HORIZONTAL:
|
||
overflowX.SetIntValue(NS_STYLE_OVERFLOW_SCROLL, eCSSUnit_Enumerated);
|
||
overflowY.SetIntValue(NS_STYLE_OVERFLOW_HIDDEN, eCSSUnit_Enumerated);
|
||
break;
|
||
case NS_STYLE_OVERFLOW_SCROLLBARS_VERTICAL:
|
||
overflowX.SetIntValue(NS_STYLE_OVERFLOW_HIDDEN, eCSSUnit_Enumerated);
|
||
overflowY.SetIntValue(NS_STYLE_OVERFLOW_SCROLL, eCSSUnit_Enumerated);
|
||
break;
|
||
}
|
||
AppendValue(eCSSProperty_overflow_x, overflowX);
|
||
AppendValue(eCSSProperty_overflow_y, overflowY);
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParsePadding()
|
||
{
|
||
static const nsCSSProperty kPaddingSideIDs[] = {
|
||
eCSSProperty_padding_top,
|
||
eCSSProperty_padding_right_value,
|
||
eCSSProperty_padding_bottom,
|
||
eCSSProperty_padding_left_value
|
||
};
|
||
static const nsCSSProperty kPaddingSources[] = {
|
||
eCSSProperty_padding_left_ltr_source,
|
||
eCSSProperty_padding_left_rtl_source,
|
||
eCSSProperty_padding_right_ltr_source,
|
||
eCSSProperty_padding_right_rtl_source,
|
||
eCSSProperty_UNKNOWN
|
||
};
|
||
|
||
// do this now, in case 4 values weren't specified
|
||
InitBoxPropsAsPhysical(kPaddingSources);
|
||
return ParseBoxProperties(kPaddingSideIDs);
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseQuotes()
|
||
{
|
||
nsCSSValue value;
|
||
if (!ParseVariant(value, VARIANT_HOS, nullptr)) {
|
||
return false;
|
||
}
|
||
if (value.GetUnit() != eCSSUnit_String) {
|
||
if (!ExpectEndProperty()) {
|
||
return false;
|
||
}
|
||
} else {
|
||
nsCSSValue open = value;
|
||
nsCSSValuePairList* quotes = value.SetPairListValue();
|
||
for (;;) {
|
||
quotes->mXValue = open;
|
||
// get mandatory close
|
||
if (!ParseVariant(quotes->mYValue, VARIANT_STRING, nullptr)) {
|
||
return false;
|
||
}
|
||
if (CheckEndProperty()) {
|
||
break;
|
||
}
|
||
// look for another open
|
||
if (!ParseVariant(open, VARIANT_STRING, nullptr)) {
|
||
return false;
|
||
}
|
||
quotes->mNext = new nsCSSValuePairList;
|
||
quotes = quotes->mNext;
|
||
}
|
||
}
|
||
AppendValue(eCSSProperty_quotes, value);
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseSize()
|
||
{
|
||
nsCSSValue width, height;
|
||
if (!ParseVariant(width, VARIANT_AHKL, nsCSSProps::kPageSizeKTable)) {
|
||
return false;
|
||
}
|
||
if (width.IsLengthUnit()) {
|
||
ParseVariant(height, VARIANT_LENGTH, nullptr);
|
||
}
|
||
if (!ExpectEndProperty()) {
|
||
return false;
|
||
}
|
||
|
||
if (width == height || height.GetUnit() == eCSSUnit_Null) {
|
||
AppendValue(eCSSProperty_size, width);
|
||
} else {
|
||
nsCSSValue pair;
|
||
pair.SetPairValue(width, height);
|
||
AppendValue(eCSSProperty_size, pair);
|
||
}
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseTextDecoration()
|
||
{
|
||
enum {
|
||
eDecorationNone = NS_STYLE_TEXT_DECORATION_LINE_NONE,
|
||
eDecorationUnderline = NS_STYLE_TEXT_DECORATION_LINE_UNDERLINE,
|
||
eDecorationOverline = NS_STYLE_TEXT_DECORATION_LINE_OVERLINE,
|
||
eDecorationLineThrough = NS_STYLE_TEXT_DECORATION_LINE_LINE_THROUGH,
|
||
eDecorationBlink = NS_STYLE_TEXT_DECORATION_LINE_BLINK,
|
||
eDecorationPrefAnchors = NS_STYLE_TEXT_DECORATION_LINE_PREF_ANCHORS
|
||
};
|
||
static_assert((eDecorationNone ^ eDecorationUnderline ^
|
||
eDecorationOverline ^ eDecorationLineThrough ^
|
||
eDecorationBlink ^ eDecorationPrefAnchors) ==
|
||
(eDecorationNone | eDecorationUnderline |
|
||
eDecorationOverline | eDecorationLineThrough |
|
||
eDecorationBlink | eDecorationPrefAnchors),
|
||
"text decoration constants need to be bitmasks");
|
||
|
||
static const int32_t kTextDecorationKTable[] = {
|
||
eCSSKeyword_none, eDecorationNone,
|
||
eCSSKeyword_underline, eDecorationUnderline,
|
||
eCSSKeyword_overline, eDecorationOverline,
|
||
eCSSKeyword_line_through, eDecorationLineThrough,
|
||
eCSSKeyword_blink, eDecorationBlink,
|
||
eCSSKeyword__moz_anchor_decoration, eDecorationPrefAnchors,
|
||
eCSSKeyword_UNKNOWN,-1
|
||
};
|
||
|
||
nsCSSValue value;
|
||
if (!ParseVariant(value, VARIANT_HK, kTextDecorationKTable)) {
|
||
return false;
|
||
}
|
||
|
||
nsCSSValue line, style, color;
|
||
switch (value.GetUnit()) {
|
||
case eCSSUnit_Enumerated: {
|
||
// We shouldn't accept decoration line style and color via
|
||
// text-decoration.
|
||
color.SetIntValue(NS_STYLE_COLOR_MOZ_USE_TEXT_COLOR,
|
||
eCSSUnit_Enumerated);
|
||
style.SetIntValue(NS_STYLE_TEXT_DECORATION_STYLE_SOLID,
|
||
eCSSUnit_Enumerated);
|
||
|
||
int32_t intValue = value.GetIntValue();
|
||
if (intValue == eDecorationNone) {
|
||
line.SetIntValue(NS_STYLE_TEXT_DECORATION_LINE_NONE,
|
||
eCSSUnit_Enumerated);
|
||
break;
|
||
}
|
||
|
||
// look for more keywords
|
||
nsCSSValue keyword;
|
||
int32_t index;
|
||
for (index = 0; index < 3; index++) {
|
||
if (!ParseEnum(keyword, kTextDecorationKTable)) {
|
||
break;
|
||
}
|
||
int32_t newValue = keyword.GetIntValue();
|
||
if (newValue == eDecorationNone || newValue & intValue) {
|
||
// 'none' keyword in conjuction with others is not allowed, and
|
||
// duplicate keyword is not allowed.
|
||
return false;
|
||
}
|
||
intValue |= newValue;
|
||
}
|
||
|
||
line.SetIntValue(intValue, eCSSUnit_Enumerated);
|
||
break;
|
||
}
|
||
default:
|
||
line = color = style = value;
|
||
break;
|
||
}
|
||
|
||
AppendValue(eCSSProperty_text_decoration_line, line);
|
||
AppendValue(eCSSProperty_text_decoration_color, color);
|
||
AppendValue(eCSSProperty_text_decoration_style, style);
|
||
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseTextAlign(nsCSSValue& aValue, const int32_t aTable[])
|
||
{
|
||
if (ParseVariant(aValue, VARIANT_INHERIT, nullptr)) {
|
||
// 'inherit', 'initial' and 'unset' must be alone
|
||
return true;
|
||
}
|
||
|
||
nsCSSValue left;
|
||
if (!ParseVariant(left, VARIANT_KEYWORD, aTable)) {
|
||
return false;
|
||
}
|
||
|
||
if (!nsLayoutUtils::IsTextAlignTrueValueEnabled()) {
|
||
aValue = left;
|
||
return true;
|
||
}
|
||
|
||
nsCSSValue right;
|
||
if (ParseVariant(right, VARIANT_KEYWORD, aTable)) {
|
||
// 'true' must be combined with some other value than 'true'.
|
||
if (left.GetIntValue() == NS_STYLE_TEXT_ALIGN_TRUE &&
|
||
right.GetIntValue() == NS_STYLE_TEXT_ALIGN_TRUE) {
|
||
return false;
|
||
}
|
||
aValue.SetPairValue(left, right);
|
||
} else {
|
||
// Single value 'true' is not allowed.
|
||
if (left.GetIntValue() == NS_STYLE_TEXT_ALIGN_TRUE) {
|
||
return false;
|
||
}
|
||
aValue = left;
|
||
}
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseTextAlign(nsCSSValue& aValue)
|
||
{
|
||
return ParseTextAlign(aValue, nsCSSProps::kTextAlignKTable);
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseTextAlignLast(nsCSSValue& aValue)
|
||
{
|
||
return ParseTextAlign(aValue, nsCSSProps::kTextAlignLastKTable);
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseTextDecorationLine(nsCSSValue& aValue)
|
||
{
|
||
if (ParseVariant(aValue, VARIANT_HK, nsCSSProps::kTextDecorationLineKTable)) {
|
||
if (eCSSUnit_Enumerated == aValue.GetUnit()) {
|
||
int32_t intValue = aValue.GetIntValue();
|
||
if (intValue != NS_STYLE_TEXT_DECORATION_LINE_NONE) {
|
||
// look for more keywords
|
||
nsCSSValue keyword;
|
||
int32_t index;
|
||
for (index = 0; index < 3; index++) {
|
||
if (ParseEnum(keyword, nsCSSProps::kTextDecorationLineKTable)) {
|
||
int32_t newValue = keyword.GetIntValue();
|
||
if (newValue == NS_STYLE_TEXT_DECORATION_LINE_NONE ||
|
||
newValue & intValue) {
|
||
// 'none' keyword in conjuction with others is not allowed, and
|
||
// duplicate keyword is not allowed.
|
||
return false;
|
||
}
|
||
intValue |= newValue;
|
||
}
|
||
else {
|
||
break;
|
||
}
|
||
}
|
||
aValue.SetIntValue(intValue, eCSSUnit_Enumerated);
|
||
}
|
||
}
|
||
return true;
|
||
}
|
||
return false;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseTextOverflow(nsCSSValue& aValue)
|
||
{
|
||
if (ParseVariant(aValue, VARIANT_INHERIT, nullptr)) {
|
||
// 'inherit', 'initial' and 'unset' must be alone
|
||
return true;
|
||
}
|
||
|
||
nsCSSValue left;
|
||
if (!ParseVariant(left, VARIANT_KEYWORD | VARIANT_STRING,
|
||
nsCSSProps::kTextOverflowKTable))
|
||
return false;
|
||
|
||
nsCSSValue right;
|
||
if (ParseVariant(right, VARIANT_KEYWORD | VARIANT_STRING,
|
||
nsCSSProps::kTextOverflowKTable))
|
||
aValue.SetPairValue(left, right);
|
||
else {
|
||
aValue = left;
|
||
}
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseTextCombineHorizontal(nsCSSValue& aValue)
|
||
{
|
||
if (!ParseVariant(aValue, VARIANT_HK,
|
||
nsCSSProps::kTextCombineHorizontalKTable)) {
|
||
return false;
|
||
}
|
||
|
||
// if 'digits', need to check for an explicit number [2, 3, 4]
|
||
if (eCSSUnit_Enumerated == aValue.GetUnit() &&
|
||
aValue.GetIntValue() == NS_STYLE_TEXT_COMBINE_HORIZ_DIGITS_2) {
|
||
if (!GetToken(true)) {
|
||
return true;
|
||
}
|
||
if (mToken.mType == eCSSToken_Number && mToken.mIntegerValid) {
|
||
switch (mToken.mInteger) {
|
||
case 2: // already set, nothing to do
|
||
break;
|
||
case 3:
|
||
aValue.SetIntValue(NS_STYLE_TEXT_COMBINE_HORIZ_DIGITS_3,
|
||
eCSSUnit_Enumerated);
|
||
break;
|
||
case 4:
|
||
aValue.SetIntValue(NS_STYLE_TEXT_COMBINE_HORIZ_DIGITS_4,
|
||
eCSSUnit_Enumerated);
|
||
break;
|
||
default:
|
||
// invalid digits value
|
||
return false;
|
||
}
|
||
} else {
|
||
UngetToken();
|
||
}
|
||
}
|
||
return true;
|
||
}
|
||
|
||
///////////////////////////////////////////////////////
|
||
// transform Parsing Implementation
|
||
|
||
/* Reads a function list of arguments and consumes the closing parenthesis.
|
||
* Do not call this function directly; it's meant to be called from
|
||
* ParseFunction.
|
||
*/
|
||
bool
|
||
CSSParserImpl::ParseFunctionInternals(const int32_t aVariantMask[],
|
||
int32_t aVariantMaskAll,
|
||
uint16_t aMinElems,
|
||
uint16_t aMaxElems,
|
||
InfallibleTArray<nsCSSValue> &aOutput)
|
||
{
|
||
NS_ASSERTION((aVariantMask && !aVariantMaskAll) ||
|
||
(!aVariantMask && aVariantMaskAll),
|
||
"only one of the two variant mask parameters can be set");
|
||
|
||
for (uint16_t index = 0; index < aMaxElems; ++index) {
|
||
nsCSSValue newValue;
|
||
int32_t m = aVariantMaskAll ? aVariantMaskAll : aVariantMask[index];
|
||
if (!ParseVariant(newValue, m, nullptr)) {
|
||
break;
|
||
}
|
||
|
||
aOutput.AppendElement(newValue);
|
||
|
||
if (ExpectSymbol(',', true)) {
|
||
// Move on to the next argument if we see a comma.
|
||
continue;
|
||
}
|
||
|
||
if (ExpectSymbol(')', true)) {
|
||
// Make sure we've read enough symbols if we see a closing parenthesis.
|
||
return (index + 1) >= aMinElems;
|
||
}
|
||
|
||
// Only a comma or a closing parenthesis is valid after an argument.
|
||
break;
|
||
}
|
||
|
||
// If we're here, we've hit an error without seeing a closing parenthesis or
|
||
// we've read too many elements without seeing a closing parenthesis.
|
||
SkipUntil(')');
|
||
return false;
|
||
}
|
||
|
||
/* Parses a function [ input of the form (a [, b]*) ] and stores it
|
||
* as an nsCSSValue that holds a function of the form
|
||
* function-name arg1 arg2 ... argN
|
||
*
|
||
* On error, the return value is false.
|
||
*
|
||
* @param aFunction The name of the function that we're reading.
|
||
* @param aAllowedTypes An array of values corresponding to the legal
|
||
* types for each element in the function. The zeroth element in the
|
||
* array corresponds to the first function parameter, etc. The length
|
||
* of this array _must_ be greater than or equal to aMaxElems or the
|
||
* behavior is undefined. If not null, aAllowTypesAll must be 0.
|
||
* @param aAllowedTypesAll If set, every element tested for these types
|
||
* @param aMinElems Minimum number of elements to read. Reading fewer than
|
||
* this many elements will result in the function failing.
|
||
* @param aMaxElems Maximum number of elements to read. Reading more than
|
||
* this many elements will result in the function failing.
|
||
* @param aValue (out) The value that was parsed.
|
||
*/
|
||
bool
|
||
CSSParserImpl::ParseFunction(nsCSSKeyword aFunction,
|
||
const int32_t aAllowedTypes[],
|
||
int32_t aAllowedTypesAll,
|
||
uint16_t aMinElems, uint16_t aMaxElems,
|
||
nsCSSValue &aValue)
|
||
{
|
||
NS_ASSERTION((aAllowedTypes && !aAllowedTypesAll) ||
|
||
(!aAllowedTypes && aAllowedTypesAll),
|
||
"only one of the two allowed type parameter can be set");
|
||
typedef InfallibleTArray<nsCSSValue>::size_type arrlen_t;
|
||
|
||
/* 2^16 - 2, so that if we have 2^16 - 2 transforms, we have 2^16 - 1
|
||
* elements stored in the the nsCSSValue::Array.
|
||
*/
|
||
static const arrlen_t MAX_ALLOWED_ELEMS = 0xFFFE;
|
||
|
||
/* Read in a list of values as an array, failing if we can't or if
|
||
* it's out of bounds.
|
||
*/
|
||
InfallibleTArray<nsCSSValue> foundValues;
|
||
if (!ParseFunctionInternals(aAllowedTypes, aAllowedTypesAll, aMinElems,
|
||
aMaxElems, foundValues)) {
|
||
return false;
|
||
}
|
||
|
||
/*
|
||
* In case the user has given us more than 2^16 - 2 arguments,
|
||
* we'll truncate them at 2^16 - 2 arguments.
|
||
*/
|
||
uint16_t numArgs = std::min(foundValues.Length(), MAX_ALLOWED_ELEMS);
|
||
nsRefPtr<nsCSSValue::Array> convertedArray =
|
||
aValue.InitFunction(aFunction, numArgs);
|
||
|
||
/* Copy things over. */
|
||
for (uint16_t index = 0; index < numArgs; ++index)
|
||
convertedArray->Item(index + 1) = foundValues[static_cast<arrlen_t>(index)];
|
||
|
||
/* Return it! */
|
||
return true;
|
||
}
|
||
|
||
/**
|
||
* Given a token, determines the minimum and maximum number of function
|
||
* parameters to read, along with the mask that should be used to read
|
||
* those function parameters. If the token isn't a transform function,
|
||
* returns an error.
|
||
*
|
||
* @param aToken The token identifying the function.
|
||
* @param aMinElems [out] The minimum number of elements to read.
|
||
* @param aMaxElems [out] The maximum number of elements to read
|
||
* @param aVariantMask [out] The variant mask to use during parsing
|
||
* @return Whether the information was loaded successfully.
|
||
*/
|
||
static bool GetFunctionParseInformation(nsCSSKeyword aToken,
|
||
bool aIsPrefixed,
|
||
uint16_t &aMinElems,
|
||
uint16_t &aMaxElems,
|
||
const int32_t *& aVariantMask)
|
||
{
|
||
/* These types represent the common variant masks that will be used to
|
||
* parse out the individual functions. The order in the enumeration
|
||
* must match the order in which the masks are declared.
|
||
*/
|
||
enum { eLengthPercentCalc,
|
||
eLengthCalc,
|
||
eTwoLengthPercentCalcs,
|
||
eTwoLengthPercentCalcsOneLengthCalc,
|
||
eAngle,
|
||
eTwoAngles,
|
||
eNumber,
|
||
ePositiveLength,
|
||
eTwoNumbers,
|
||
eThreeNumbers,
|
||
eThreeNumbersOneAngle,
|
||
eMatrix,
|
||
eMatrixPrefixed,
|
||
eMatrix3d,
|
||
eMatrix3dPrefixed,
|
||
eNumVariantMasks };
|
||
static const int32_t kMaxElemsPerFunction = 16;
|
||
static const int32_t kVariantMasks[eNumVariantMasks][kMaxElemsPerFunction] = {
|
||
{VARIANT_LPCALC},
|
||
{VARIANT_LENGTH|VARIANT_CALC},
|
||
{VARIANT_LPCALC, VARIANT_LPCALC},
|
||
{VARIANT_LPCALC, VARIANT_LPCALC, VARIANT_LENGTH|VARIANT_CALC},
|
||
{VARIANT_ANGLE_OR_ZERO},
|
||
{VARIANT_ANGLE_OR_ZERO, VARIANT_ANGLE_OR_ZERO},
|
||
{VARIANT_NUMBER},
|
||
{VARIANT_LENGTH|VARIANT_POSITIVE_DIMENSION},
|
||
{VARIANT_NUMBER, VARIANT_NUMBER},
|
||
{VARIANT_NUMBER, VARIANT_NUMBER, VARIANT_NUMBER},
|
||
{VARIANT_NUMBER, VARIANT_NUMBER, VARIANT_NUMBER, VARIANT_ANGLE_OR_ZERO},
|
||
{VARIANT_NUMBER, VARIANT_NUMBER, VARIANT_NUMBER, VARIANT_NUMBER,
|
||
VARIANT_NUMBER, VARIANT_NUMBER},
|
||
{VARIANT_NUMBER, VARIANT_NUMBER, VARIANT_NUMBER, VARIANT_NUMBER,
|
||
VARIANT_LPNCALC, VARIANT_LPNCALC},
|
||
{VARIANT_NUMBER, VARIANT_NUMBER, VARIANT_NUMBER, VARIANT_NUMBER,
|
||
VARIANT_NUMBER, VARIANT_NUMBER, VARIANT_NUMBER, VARIANT_NUMBER,
|
||
VARIANT_NUMBER, VARIANT_NUMBER, VARIANT_NUMBER, VARIANT_NUMBER,
|
||
VARIANT_NUMBER, VARIANT_NUMBER, VARIANT_NUMBER, VARIANT_NUMBER},
|
||
{VARIANT_NUMBER, VARIANT_NUMBER, VARIANT_NUMBER, VARIANT_NUMBER,
|
||
VARIANT_NUMBER, VARIANT_NUMBER, VARIANT_NUMBER, VARIANT_NUMBER,
|
||
VARIANT_NUMBER, VARIANT_NUMBER, VARIANT_NUMBER, VARIANT_NUMBER,
|
||
VARIANT_LPNCALC, VARIANT_LPNCALC, VARIANT_LNCALC, VARIANT_NUMBER}};
|
||
|
||
#ifdef DEBUG
|
||
static const uint8_t kVariantMaskLengths[eNumVariantMasks] =
|
||
{1, 1, 2, 3, 1, 2, 1, 1, 2, 3, 4, 6, 6, 16, 16};
|
||
#endif
|
||
|
||
int32_t variantIndex = eNumVariantMasks;
|
||
|
||
switch (aToken) {
|
||
case eCSSKeyword_translatex:
|
||
case eCSSKeyword_translatey:
|
||
/* Exactly one length or percent. */
|
||
variantIndex = eLengthPercentCalc;
|
||
aMinElems = 1U;
|
||
aMaxElems = 1U;
|
||
break;
|
||
case eCSSKeyword_translatez:
|
||
/* Exactly one length */
|
||
variantIndex = eLengthCalc;
|
||
aMinElems = 1U;
|
||
aMaxElems = 1U;
|
||
break;
|
||
case eCSSKeyword_translate3d:
|
||
/* Exactly two lengthds or percents and a number */
|
||
variantIndex = eTwoLengthPercentCalcsOneLengthCalc;
|
||
aMinElems = 3U;
|
||
aMaxElems = 3U;
|
||
break;
|
||
case eCSSKeyword_scalez:
|
||
case eCSSKeyword_scalex:
|
||
case eCSSKeyword_scaley:
|
||
/* Exactly one scale factor. */
|
||
variantIndex = eNumber;
|
||
aMinElems = 1U;
|
||
aMaxElems = 1U;
|
||
break;
|
||
case eCSSKeyword_scale3d:
|
||
/* Exactly three scale factors. */
|
||
variantIndex = eThreeNumbers;
|
||
aMinElems = 3U;
|
||
aMaxElems = 3U;
|
||
break;
|
||
case eCSSKeyword_rotatex:
|
||
case eCSSKeyword_rotatey:
|
||
case eCSSKeyword_rotate:
|
||
case eCSSKeyword_rotatez:
|
||
/* Exactly one angle. */
|
||
variantIndex = eAngle;
|
||
aMinElems = 1U;
|
||
aMaxElems = 1U;
|
||
break;
|
||
case eCSSKeyword_rotate3d:
|
||
variantIndex = eThreeNumbersOneAngle;
|
||
aMinElems = 4U;
|
||
aMaxElems = 4U;
|
||
break;
|
||
case eCSSKeyword_translate:
|
||
/* One or two lengths or percents. */
|
||
variantIndex = eTwoLengthPercentCalcs;
|
||
aMinElems = 1U;
|
||
aMaxElems = 2U;
|
||
break;
|
||
case eCSSKeyword_skew:
|
||
/* Exactly one or two angles. */
|
||
variantIndex = eTwoAngles;
|
||
aMinElems = 1U;
|
||
aMaxElems = 2U;
|
||
break;
|
||
case eCSSKeyword_scale:
|
||
/* One or two scale factors. */
|
||
variantIndex = eTwoNumbers;
|
||
aMinElems = 1U;
|
||
aMaxElems = 2U;
|
||
break;
|
||
case eCSSKeyword_skewx:
|
||
/* Exactly one angle. */
|
||
variantIndex = eAngle;
|
||
aMinElems = 1U;
|
||
aMaxElems = 1U;
|
||
break;
|
||
case eCSSKeyword_skewy:
|
||
/* Exactly one angle. */
|
||
variantIndex = eAngle;
|
||
aMinElems = 1U;
|
||
aMaxElems = 1U;
|
||
break;
|
||
case eCSSKeyword_matrix:
|
||
/* Six values, all numbers. */
|
||
variantIndex = aIsPrefixed ? eMatrixPrefixed : eMatrix;
|
||
aMinElems = 6U;
|
||
aMaxElems = 6U;
|
||
break;
|
||
case eCSSKeyword_matrix3d:
|
||
/* 16 matrix values, all numbers */
|
||
variantIndex = aIsPrefixed ? eMatrix3dPrefixed : eMatrix3d;
|
||
aMinElems = 16U;
|
||
aMaxElems = 16U;
|
||
break;
|
||
case eCSSKeyword_perspective:
|
||
/* Exactly one scale number. */
|
||
variantIndex = ePositiveLength;
|
||
aMinElems = 1U;
|
||
aMaxElems = 1U;
|
||
break;
|
||
default:
|
||
/* Oh dear, we didn't match. Report an error. */
|
||
return false;
|
||
}
|
||
|
||
NS_ASSERTION(aMinElems > 0, "Didn't update minimum elements!");
|
||
NS_ASSERTION(aMaxElems > 0, "Didn't update maximum elements!");
|
||
NS_ASSERTION(aMinElems <= aMaxElems, "aMinElems > aMaxElems!");
|
||
NS_ASSERTION(variantIndex >= 0, "Invalid variant mask!");
|
||
NS_ASSERTION(variantIndex < eNumVariantMasks, "Invalid variant mask!");
|
||
#ifdef DEBUG
|
||
NS_ASSERTION(aMaxElems <= kVariantMaskLengths[variantIndex],
|
||
"Invalid aMaxElems for this variant mask.");
|
||
#endif
|
||
|
||
// Convert the index into a mask.
|
||
aVariantMask = kVariantMasks[variantIndex];
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Reads a single transform function from the tokenizer stream, reporting an
|
||
* error if something goes wrong.
|
||
*/
|
||
bool
|
||
CSSParserImpl::ParseSingleTransform(bool aIsPrefixed, nsCSSValue& aValue)
|
||
{
|
||
if (!GetToken(true))
|
||
return false;
|
||
|
||
if (mToken.mType != eCSSToken_Function) {
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
|
||
const int32_t* variantMask;
|
||
uint16_t minElems, maxElems;
|
||
nsCSSKeyword keyword = nsCSSKeywords::LookupKeyword(mToken.mIdent);
|
||
|
||
if (!GetFunctionParseInformation(keyword, aIsPrefixed,
|
||
minElems, maxElems, variantMask))
|
||
return false;
|
||
|
||
return ParseFunction(keyword, variantMask, 0, minElems, maxElems, aValue);
|
||
}
|
||
|
||
/* Parses a transform property list by continuously reading in properties
|
||
* and constructing a matrix from it.
|
||
*/
|
||
bool CSSParserImpl::ParseTransform(bool aIsPrefixed)
|
||
{
|
||
nsCSSValue value;
|
||
if (ParseVariant(value, VARIANT_INHERIT | VARIANT_NONE, nullptr)) {
|
||
// 'inherit', 'initial', 'unset' and 'none' must be alone
|
||
if (!ExpectEndProperty()) {
|
||
return false;
|
||
}
|
||
} else {
|
||
nsCSSValueSharedList* list = new nsCSSValueSharedList;
|
||
value.SetSharedListValue(list);
|
||
list->mHead = new nsCSSValueList;
|
||
nsCSSValueList* cur = list->mHead;
|
||
for (;;) {
|
||
if (!ParseSingleTransform(aIsPrefixed, cur->mValue)) {
|
||
return false;
|
||
}
|
||
if (CheckEndProperty()) {
|
||
break;
|
||
}
|
||
cur->mNext = new nsCSSValueList;
|
||
cur = cur->mNext;
|
||
}
|
||
}
|
||
AppendValue(eCSSProperty_transform, value);
|
||
return true;
|
||
}
|
||
|
||
bool CSSParserImpl::ParseTransformOrigin(bool aPerspective)
|
||
{
|
||
nsCSSValuePair position;
|
||
if (!ParseBoxPositionValues(position, true))
|
||
return false;
|
||
|
||
nsCSSProperty prop = eCSSProperty_transform_origin;
|
||
if (aPerspective) {
|
||
if (!ExpectEndProperty()) {
|
||
return false;
|
||
}
|
||
prop = eCSSProperty_perspective_origin;
|
||
}
|
||
|
||
// Unlike many other uses of pairs, this position should always be stored
|
||
// as a pair, even if the values are the same, so it always serializes as
|
||
// a pair, and to keep the computation code simple.
|
||
if (position.mXValue.GetUnit() == eCSSUnit_Inherit ||
|
||
position.mXValue.GetUnit() == eCSSUnit_Initial ||
|
||
position.mXValue.GetUnit() == eCSSUnit_Unset) {
|
||
NS_ABORT_IF_FALSE(position.mXValue == position.mYValue,
|
||
"inherit/initial/unset only half?");
|
||
AppendValue(prop, position.mXValue);
|
||
} else {
|
||
nsCSSValue value;
|
||
if (aPerspective) {
|
||
value.SetPairValue(position.mXValue, position.mYValue);
|
||
} else {
|
||
nsCSSValue depth;
|
||
if (!ParseVariant(depth, VARIANT_LENGTH | VARIANT_CALC, nullptr)) {
|
||
depth.SetFloatValue(0.0f, eCSSUnit_Pixel);
|
||
}
|
||
value.SetTripletValue(position.mXValue, position.mYValue, depth);
|
||
}
|
||
|
||
AppendValue(prop, value);
|
||
}
|
||
return true;
|
||
}
|
||
|
||
/**
|
||
* Reads a drop-shadow value. At the moment the Filter Effects specification
|
||
* just expects one shadow item. Should this ever change to a list of shadow
|
||
* items, use ParseShadowList instead.
|
||
*/
|
||
bool
|
||
CSSParserImpl::ParseDropShadow(nsCSSValue* aValue)
|
||
{
|
||
// Use nsCSSValueList to reuse the shadow resolving code in
|
||
// nsRuleNode and nsComputedDOMStyle.
|
||
nsCSSValue shadow;
|
||
nsCSSValueList* cur = shadow.SetListValue();
|
||
if (!ParseShadowItem(cur->mValue, false))
|
||
return false;
|
||
|
||
if (!ExpectSymbol(')', true))
|
||
return false;
|
||
|
||
nsCSSValue::Array* dropShadow = aValue->InitFunction(eCSSKeyword_drop_shadow, 1);
|
||
|
||
// Copy things over.
|
||
dropShadow->Item(1) = shadow;
|
||
|
||
return true;
|
||
}
|
||
|
||
/**
|
||
* Reads a single url or filter function from the tokenizer stream, reporting an
|
||
* error if something goes wrong.
|
||
*/
|
||
bool
|
||
CSSParserImpl::ParseSingleFilter(nsCSSValue* aValue)
|
||
{
|
||
if (ParseVariant(*aValue, VARIANT_URL, nullptr)) {
|
||
return true;
|
||
}
|
||
|
||
if (!nsLayoutUtils::CSSFiltersEnabled()) {
|
||
// With CSS Filters disabled, we should only accept an SVG reference filter.
|
||
REPORT_UNEXPECTED_TOKEN(PEExpectedNoneOrURL);
|
||
return false;
|
||
}
|
||
|
||
if (!GetToken(true)) {
|
||
REPORT_UNEXPECTED_EOF(PEFilterEOF);
|
||
return false;
|
||
}
|
||
|
||
if (mToken.mType != eCSSToken_Function) {
|
||
REPORT_UNEXPECTED_TOKEN(PEExpectedNoneOrURLOrFilterFunction);
|
||
return false;
|
||
}
|
||
|
||
nsCSSKeyword functionName = nsCSSKeywords::LookupKeyword(mToken.mIdent);
|
||
// Parse drop-shadow independently of the other filter functions
|
||
// because of its more complex characteristics.
|
||
if (functionName == eCSSKeyword_drop_shadow) {
|
||
if (ParseDropShadow(aValue)) {
|
||
return true;
|
||
} else {
|
||
// Unrecognized filter function.
|
||
REPORT_UNEXPECTED_TOKEN(PEExpectedNoneOrURLOrFilterFunction);
|
||
SkipUntil(')');
|
||
return false;
|
||
}
|
||
}
|
||
|
||
// Set up the parsing rules based on the filter function.
|
||
int32_t variantMask = VARIANT_PN;
|
||
bool rejectNegativeArgument = true;
|
||
bool clampArgumentToOne = false;
|
||
switch (functionName) {
|
||
case eCSSKeyword_blur:
|
||
variantMask = VARIANT_LCALC | VARIANT_NONNEGATIVE_DIMENSION;
|
||
// VARIANT_NONNEGATIVE_DIMENSION will already reject negative lengths.
|
||
rejectNegativeArgument = false;
|
||
break;
|
||
case eCSSKeyword_brightness:
|
||
case eCSSKeyword_contrast:
|
||
case eCSSKeyword_saturate:
|
||
break;
|
||
case eCSSKeyword_grayscale:
|
||
case eCSSKeyword_invert:
|
||
case eCSSKeyword_sepia:
|
||
case eCSSKeyword_opacity:
|
||
clampArgumentToOne = true;
|
||
break;
|
||
case eCSSKeyword_hue_rotate:
|
||
variantMask = VARIANT_ANGLE;
|
||
rejectNegativeArgument = false;
|
||
break;
|
||
default:
|
||
// Unrecognized filter function.
|
||
REPORT_UNEXPECTED_TOKEN(PEExpectedNoneOrURLOrFilterFunction);
|
||
SkipUntil(')');
|
||
return false;
|
||
}
|
||
|
||
// Parse the function.
|
||
uint16_t minElems = 1U;
|
||
uint16_t maxElems = 1U;
|
||
uint32_t allVariants = 0;
|
||
if (!ParseFunction(functionName, &variantMask, allVariants,
|
||
minElems, maxElems, *aValue)) {
|
||
REPORT_UNEXPECTED(PEFilterFunctionArgumentsParsingError);
|
||
return false;
|
||
}
|
||
|
||
// Get the first and only argument to the filter function.
|
||
NS_ABORT_IF_FALSE(aValue->GetUnit() == eCSSUnit_Function,
|
||
"expected a filter function");
|
||
NS_ABORT_IF_FALSE(aValue->UnitHasArrayValue(),
|
||
"filter function should be an array");
|
||
NS_ABORT_IF_FALSE(aValue->GetArrayValue()->Count() == 2,
|
||
"filter function should have exactly one argument");
|
||
nsCSSValue& arg = aValue->GetArrayValue()->Item(1);
|
||
|
||
if (rejectNegativeArgument &&
|
||
((arg.GetUnit() == eCSSUnit_Percent && arg.GetPercentValue() < 0.0f) ||
|
||
(arg.GetUnit() == eCSSUnit_Number && arg.GetFloatValue() < 0.0f))) {
|
||
REPORT_UNEXPECTED(PEExpectedNonnegativeNP);
|
||
return false;
|
||
}
|
||
|
||
if (clampArgumentToOne) {
|
||
if (arg.GetUnit() == eCSSUnit_Number &&
|
||
arg.GetFloatValue() > 1.0f) {
|
||
arg.SetFloatValue(1.0f, arg.GetUnit());
|
||
} else if (arg.GetUnit() == eCSSUnit_Percent &&
|
||
arg.GetPercentValue() > 1.0f) {
|
||
arg.SetPercentValue(1.0f);
|
||
}
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/**
|
||
* Parses a filter property value by continuously reading in urls and/or filter
|
||
* functions and constructing a list.
|
||
*
|
||
* When CSS Filters are enabled, the filter property accepts one or more SVG
|
||
* reference filters and/or CSS filter functions.
|
||
* e.g. filter: url(#my-filter-1) blur(3px) url(#my-filter-2) grayscale(50%);
|
||
*
|
||
* When CSS Filters are disabled, the filter property only accepts one SVG
|
||
* reference filter.
|
||
* e.g. filter: url(#my-filter);
|
||
*/
|
||
bool
|
||
CSSParserImpl::ParseFilter()
|
||
{
|
||
nsCSSValue value;
|
||
if (ParseVariant(value, VARIANT_INHERIT | VARIANT_NONE, nullptr)) {
|
||
// 'inherit', 'initial', 'unset' and 'none' must be alone
|
||
if (!ExpectEndProperty()) {
|
||
return false;
|
||
}
|
||
} else {
|
||
nsCSSValueList* cur = value.SetListValue();
|
||
while (cur) {
|
||
if (!ParseSingleFilter(&cur->mValue)) {
|
||
return false;
|
||
}
|
||
if (CheckEndProperty()) {
|
||
break;
|
||
}
|
||
if (!nsLayoutUtils::CSSFiltersEnabled()) {
|
||
// With CSS Filters disabled, we should only accept one SVG reference
|
||
// filter.
|
||
REPORT_UNEXPECTED_TOKEN(PEExpectEndValue);
|
||
return false;
|
||
}
|
||
cur->mNext = new nsCSSValueList;
|
||
cur = cur->mNext;
|
||
}
|
||
}
|
||
AppendValue(eCSSProperty_filter, value);
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseTransitionProperty()
|
||
{
|
||
nsCSSValue value;
|
||
if (ParseVariant(value, VARIANT_INHERIT | VARIANT_NONE, nullptr)) {
|
||
// 'inherit', 'initial', 'unset' and 'none' must be alone
|
||
if (!ExpectEndProperty()) {
|
||
return false;
|
||
}
|
||
} else {
|
||
// Accept a list of arbitrary identifiers. They should be
|
||
// CSS properties, but we want to accept any so that we
|
||
// accept properties that we don't know about yet, e.g.
|
||
// transition-property: invalid-property, left, opacity;
|
||
nsCSSValueList* cur = value.SetListValue();
|
||
for (;;) {
|
||
if (!ParseVariant(cur->mValue, VARIANT_IDENTIFIER | VARIANT_ALL, nullptr)) {
|
||
return false;
|
||
}
|
||
if (cur->mValue.GetUnit() == eCSSUnit_Ident) {
|
||
nsDependentString str(cur->mValue.GetStringBufferValue());
|
||
// Exclude 'none', 'inherit', 'initial' and 'unset' according to the
|
||
// same rules as for 'counter-reset' in CSS 2.1.
|
||
if (str.LowerCaseEqualsLiteral("none") ||
|
||
str.LowerCaseEqualsLiteral("inherit") ||
|
||
str.LowerCaseEqualsLiteral("initial") ||
|
||
(str.LowerCaseEqualsLiteral("unset") &&
|
||
nsLayoutUtils::UnsetValueEnabled())) {
|
||
return false;
|
||
}
|
||
}
|
||
if (CheckEndProperty()) {
|
||
break;
|
||
}
|
||
if (!ExpectSymbol(',', true)) {
|
||
REPORT_UNEXPECTED_TOKEN(PEExpectedComma);
|
||
return false;
|
||
}
|
||
cur->mNext = new nsCSSValueList;
|
||
cur = cur->mNext;
|
||
}
|
||
}
|
||
AppendValue(eCSSProperty_transition_property, value);
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseTransitionTimingFunctionValues(nsCSSValue& aValue)
|
||
{
|
||
NS_ASSERTION(!mHavePushBack &&
|
||
mToken.mType == eCSSToken_Function &&
|
||
mToken.mIdent.LowerCaseEqualsLiteral("cubic-bezier"),
|
||
"unexpected initial state");
|
||
|
||
nsRefPtr<nsCSSValue::Array> val = nsCSSValue::Array::Create(4);
|
||
|
||
float x1, x2, y1, y2;
|
||
if (!ParseTransitionTimingFunctionValueComponent(x1, ',', true) ||
|
||
!ParseTransitionTimingFunctionValueComponent(y1, ',', false) ||
|
||
!ParseTransitionTimingFunctionValueComponent(x2, ',', true) ||
|
||
!ParseTransitionTimingFunctionValueComponent(y2, ')', false)) {
|
||
return false;
|
||
}
|
||
|
||
val->Item(0).SetFloatValue(x1, eCSSUnit_Number);
|
||
val->Item(1).SetFloatValue(y1, eCSSUnit_Number);
|
||
val->Item(2).SetFloatValue(x2, eCSSUnit_Number);
|
||
val->Item(3).SetFloatValue(y2, eCSSUnit_Number);
|
||
|
||
aValue.SetArrayValue(val, eCSSUnit_Cubic_Bezier);
|
||
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseTransitionTimingFunctionValueComponent(float& aComponent,
|
||
char aStop,
|
||
bool aCheckRange)
|
||
{
|
||
if (!GetToken(true)) {
|
||
return false;
|
||
}
|
||
nsCSSToken* tk = &mToken;
|
||
if (tk->mType == eCSSToken_Number) {
|
||
float num = tk->mNumber;
|
||
if (aCheckRange && (num < 0.0 || num > 1.0)) {
|
||
return false;
|
||
}
|
||
aComponent = num;
|
||
if (ExpectSymbol(aStop, true)) {
|
||
return true;
|
||
}
|
||
}
|
||
return false;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseTransitionStepTimingFunctionValues(nsCSSValue& aValue)
|
||
{
|
||
NS_ASSERTION(!mHavePushBack &&
|
||
mToken.mType == eCSSToken_Function &&
|
||
mToken.mIdent.LowerCaseEqualsLiteral("steps"),
|
||
"unexpected initial state");
|
||
|
||
nsRefPtr<nsCSSValue::Array> val = nsCSSValue::Array::Create(2);
|
||
|
||
if (!ParseOneOrLargerVariant(val->Item(0), VARIANT_INTEGER, nullptr)) {
|
||
return false;
|
||
}
|
||
|
||
int32_t type = NS_STYLE_TRANSITION_TIMING_FUNCTION_STEP_END;
|
||
if (ExpectSymbol(',', true)) {
|
||
if (!GetToken(true)) {
|
||
return false;
|
||
}
|
||
type = -1;
|
||
if (mToken.mType == eCSSToken_Ident) {
|
||
if (mToken.mIdent.LowerCaseEqualsLiteral("start")) {
|
||
type = NS_STYLE_TRANSITION_TIMING_FUNCTION_STEP_START;
|
||
} else if (mToken.mIdent.LowerCaseEqualsLiteral("end")) {
|
||
type = NS_STYLE_TRANSITION_TIMING_FUNCTION_STEP_END;
|
||
}
|
||
}
|
||
if (type == -1) {
|
||
UngetToken();
|
||
return false;
|
||
}
|
||
}
|
||
val->Item(1).SetIntValue(type, eCSSUnit_Enumerated);
|
||
|
||
if (!ExpectSymbol(')', true)) {
|
||
return false;
|
||
}
|
||
|
||
aValue.SetArrayValue(val, eCSSUnit_Steps);
|
||
return true;
|
||
}
|
||
|
||
static nsCSSValueList*
|
||
AppendValueToList(nsCSSValue& aContainer,
|
||
nsCSSValueList* aTail,
|
||
const nsCSSValue& aValue)
|
||
{
|
||
nsCSSValueList* entry;
|
||
if (aContainer.GetUnit() == eCSSUnit_Null) {
|
||
NS_ABORT_IF_FALSE(!aTail, "should not have an entry");
|
||
entry = aContainer.SetListValue();
|
||
} else {
|
||
NS_ABORT_IF_FALSE(!aTail->mNext, "should not have a next entry");
|
||
NS_ABORT_IF_FALSE(aContainer.GetUnit() == eCSSUnit_List, "not a list");
|
||
entry = new nsCSSValueList;
|
||
aTail->mNext = entry;
|
||
}
|
||
entry->mValue = aValue;
|
||
return entry;
|
||
}
|
||
|
||
CSSParserImpl::ParseAnimationOrTransitionShorthandResult
|
||
CSSParserImpl::ParseAnimationOrTransitionShorthand(
|
||
const nsCSSProperty* aProperties,
|
||
const nsCSSValue* aInitialValues,
|
||
nsCSSValue* aValues,
|
||
size_t aNumProperties)
|
||
{
|
||
nsCSSValue tempValue;
|
||
// first see if 'inherit', 'initial' or 'unset' is specified. If one is,
|
||
// it can be the only thing specified, so don't attempt to parse any
|
||
// additional properties
|
||
if (ParseVariant(tempValue, VARIANT_INHERIT, nullptr)) {
|
||
for (uint32_t i = 0; i < aNumProperties; ++i) {
|
||
AppendValue(aProperties[i], tempValue);
|
||
}
|
||
return eParseAnimationOrTransitionShorthand_Inherit;
|
||
}
|
||
|
||
static const size_t maxNumProperties = 7;
|
||
NS_ABORT_IF_FALSE(aNumProperties <= maxNumProperties,
|
||
"can't handle this many properties");
|
||
nsCSSValueList *cur[maxNumProperties];
|
||
bool parsedProperty[maxNumProperties];
|
||
|
||
for (size_t i = 0; i < aNumProperties; ++i) {
|
||
cur[i] = nullptr;
|
||
}
|
||
bool atEOP = false; // at end of property?
|
||
for (;;) { // loop over comma-separated transitions or animations
|
||
// whether a particular subproperty was specified for this
|
||
// transition or animation
|
||
for (size_t i = 0; i < aNumProperties; ++i) {
|
||
parsedProperty[i] = false;
|
||
}
|
||
for (;;) { // loop over values within a transition or animation
|
||
bool foundProperty = false;
|
||
// check to see if we're at the end of one full transition or
|
||
// animation definition (either because we hit a comma or because
|
||
// we hit the end of the property definition)
|
||
if (ExpectSymbol(',', true))
|
||
break;
|
||
if (CheckEndProperty()) {
|
||
atEOP = true;
|
||
break;
|
||
}
|
||
|
||
// else, try to parse the next transition or animation sub-property
|
||
for (uint32_t i = 0; !foundProperty && i < aNumProperties; ++i) {
|
||
if (!parsedProperty[i]) {
|
||
// if we haven't found this property yet, try to parse it
|
||
if (ParseSingleValueProperty(tempValue, aProperties[i])) {
|
||
parsedProperty[i] = true;
|
||
cur[i] = AppendValueToList(aValues[i], cur[i], tempValue);
|
||
foundProperty = true;
|
||
break; // out of inner loop; continue looking for next sub-property
|
||
}
|
||
}
|
||
}
|
||
if (!foundProperty) {
|
||
// We're not at a ',' or at the end of the property, but we couldn't
|
||
// parse any of the sub-properties, so the declaration is invalid.
|
||
return eParseAnimationOrTransitionShorthand_Error;
|
||
}
|
||
}
|
||
|
||
// We hit the end of the property or the end of one transition
|
||
// or animation definition, add its components to the list.
|
||
for (uint32_t i = 0; i < aNumProperties; ++i) {
|
||
// If all of the subproperties were not explicitly specified, fill
|
||
// in the missing ones with initial values.
|
||
if (!parsedProperty[i]) {
|
||
cur[i] = AppendValueToList(aValues[i], cur[i], aInitialValues[i]);
|
||
}
|
||
}
|
||
|
||
if (atEOP)
|
||
break;
|
||
// else we just hit a ',' so continue parsing the next compound transition
|
||
}
|
||
|
||
return eParseAnimationOrTransitionShorthand_Values;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseTransition()
|
||
{
|
||
static const nsCSSProperty kTransitionProperties[] = {
|
||
eCSSProperty_transition_duration,
|
||
eCSSProperty_transition_timing_function,
|
||
// Must check 'transition-delay' after 'transition-duration', since
|
||
// that's our assumption about what the spec means for the shorthand
|
||
// syntax (the first time given is the duration, and the second
|
||
// given is the delay).
|
||
eCSSProperty_transition_delay,
|
||
// Must check 'transition-property' after
|
||
// 'transition-timing-function' since 'transition-property' accepts
|
||
// any keyword.
|
||
eCSSProperty_transition_property
|
||
};
|
||
static const uint32_t numProps = NS_ARRAY_LENGTH(kTransitionProperties);
|
||
// this is a shorthand property that accepts -property, -delay,
|
||
// -duration, and -timing-function with some components missing.
|
||
// there can be multiple transitions, separated with commas
|
||
|
||
nsCSSValue initialValues[numProps];
|
||
initialValues[0].SetFloatValue(0.0, eCSSUnit_Seconds);
|
||
initialValues[1].SetIntValue(NS_STYLE_TRANSITION_TIMING_FUNCTION_EASE,
|
||
eCSSUnit_Enumerated);
|
||
initialValues[2].SetFloatValue(0.0, eCSSUnit_Seconds);
|
||
initialValues[3].SetAllValue();
|
||
|
||
nsCSSValue values[numProps];
|
||
|
||
ParseAnimationOrTransitionShorthandResult spres =
|
||
ParseAnimationOrTransitionShorthand(kTransitionProperties,
|
||
initialValues, values, numProps);
|
||
if (spres != eParseAnimationOrTransitionShorthand_Values) {
|
||
return spres != eParseAnimationOrTransitionShorthand_Error;
|
||
}
|
||
|
||
// Make two checks on the list for 'transition-property':
|
||
// + If there is more than one item, then none of the items can be
|
||
// 'none'.
|
||
// + None of the items can be 'inherit', 'initial' or 'unset'.
|
||
{
|
||
NS_ABORT_IF_FALSE(kTransitionProperties[3] ==
|
||
eCSSProperty_transition_property,
|
||
"array index mismatch");
|
||
nsCSSValueList *l = values[3].GetListValue();
|
||
bool multipleItems = !!l->mNext;
|
||
do {
|
||
const nsCSSValue& val = l->mValue;
|
||
if (val.GetUnit() == eCSSUnit_None) {
|
||
if (multipleItems) {
|
||
// This is a syntax error.
|
||
return false;
|
||
}
|
||
|
||
// Unbox a solitary 'none'.
|
||
values[3].SetNoneValue();
|
||
break;
|
||
}
|
||
if (val.GetUnit() == eCSSUnit_Ident) {
|
||
nsDependentString str(val.GetStringBufferValue());
|
||
if (str.EqualsLiteral("inherit") ||
|
||
str.EqualsLiteral("initial") ||
|
||
(str.EqualsLiteral("unset") &&
|
||
nsLayoutUtils::UnsetValueEnabled())) {
|
||
return false;
|
||
}
|
||
}
|
||
} while ((l = l->mNext));
|
||
}
|
||
|
||
// Save all parsed transition sub-properties in mTempData
|
||
for (uint32_t i = 0; i < numProps; ++i) {
|
||
AppendValue(kTransitionProperties[i], values[i]);
|
||
}
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseAnimation()
|
||
{
|
||
static const nsCSSProperty kAnimationProperties[] = {
|
||
eCSSProperty_animation_duration,
|
||
eCSSProperty_animation_timing_function,
|
||
// Must check 'animation-delay' after 'animation-duration', since
|
||
// that's our assumption about what the spec means for the shorthand
|
||
// syntax (the first time given is the duration, and the second
|
||
// given is the delay).
|
||
eCSSProperty_animation_delay,
|
||
eCSSProperty_animation_direction,
|
||
eCSSProperty_animation_fill_mode,
|
||
eCSSProperty_animation_iteration_count,
|
||
// Must check 'animation-name' after 'animation-timing-function',
|
||
// 'animation-direction', 'animation-fill-mode',
|
||
// 'animation-iteration-count', and 'animation-play-state' since
|
||
// 'animation-name' accepts any keyword.
|
||
eCSSProperty_animation_name
|
||
};
|
||
static const uint32_t numProps = NS_ARRAY_LENGTH(kAnimationProperties);
|
||
// this is a shorthand property that accepts -property, -delay,
|
||
// -duration, and -timing-function with some components missing.
|
||
// there can be multiple animations, separated with commas
|
||
|
||
nsCSSValue initialValues[numProps];
|
||
initialValues[0].SetFloatValue(0.0, eCSSUnit_Seconds);
|
||
initialValues[1].SetIntValue(NS_STYLE_TRANSITION_TIMING_FUNCTION_EASE,
|
||
eCSSUnit_Enumerated);
|
||
initialValues[2].SetFloatValue(0.0, eCSSUnit_Seconds);
|
||
initialValues[3].SetIntValue(NS_STYLE_ANIMATION_DIRECTION_NORMAL, eCSSUnit_Enumerated);
|
||
initialValues[4].SetIntValue(NS_STYLE_ANIMATION_FILL_MODE_NONE, eCSSUnit_Enumerated);
|
||
initialValues[5].SetFloatValue(1.0f, eCSSUnit_Number);
|
||
initialValues[6].SetNoneValue();
|
||
|
||
nsCSSValue values[numProps];
|
||
|
||
ParseAnimationOrTransitionShorthandResult spres =
|
||
ParseAnimationOrTransitionShorthand(kAnimationProperties,
|
||
initialValues, values, numProps);
|
||
if (spres != eParseAnimationOrTransitionShorthand_Values) {
|
||
return spres != eParseAnimationOrTransitionShorthand_Error;
|
||
}
|
||
|
||
// Save all parsed animation sub-properties in mTempData
|
||
for (uint32_t i = 0; i < numProps; ++i) {
|
||
AppendValue(kAnimationProperties[i], values[i]);
|
||
}
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseShadowItem(nsCSSValue& aValue, bool aIsBoxShadow)
|
||
{
|
||
// A shadow list item is an array, with entries in this sequence:
|
||
enum {
|
||
IndexX,
|
||
IndexY,
|
||
IndexRadius,
|
||
IndexSpread, // only for box-shadow
|
||
IndexColor,
|
||
IndexInset // only for box-shadow
|
||
};
|
||
|
||
nsRefPtr<nsCSSValue::Array> val = nsCSSValue::Array::Create(6);
|
||
|
||
if (aIsBoxShadow) {
|
||
// Optional inset keyword (ignore errors)
|
||
ParseVariant(val->Item(IndexInset), VARIANT_KEYWORD,
|
||
nsCSSProps::kBoxShadowTypeKTable);
|
||
}
|
||
|
||
nsCSSValue xOrColor;
|
||
bool haveColor = false;
|
||
if (!ParseVariant(xOrColor, VARIANT_COLOR | VARIANT_LENGTH | VARIANT_CALC,
|
||
nullptr)) {
|
||
return false;
|
||
}
|
||
if (xOrColor.IsLengthUnit() || xOrColor.IsCalcUnit()) {
|
||
val->Item(IndexX) = xOrColor;
|
||
} else {
|
||
// Must be a color (as string or color value)
|
||
NS_ASSERTION(xOrColor.GetUnit() == eCSSUnit_Ident ||
|
||
xOrColor.GetUnit() == eCSSUnit_EnumColor ||
|
||
xOrColor.IsNumericColorUnit(),
|
||
"Must be a color value");
|
||
val->Item(IndexColor) = xOrColor;
|
||
haveColor = true;
|
||
|
||
// X coordinate mandatory after color
|
||
if (!ParseVariant(val->Item(IndexX), VARIANT_LENGTH | VARIANT_CALC,
|
||
nullptr)) {
|
||
return false;
|
||
}
|
||
}
|
||
|
||
// Y coordinate; mandatory
|
||
if (!ParseVariant(val->Item(IndexY), VARIANT_LENGTH | VARIANT_CALC,
|
||
nullptr)) {
|
||
return false;
|
||
}
|
||
|
||
// Optional radius. Ignore errors except if they pass a negative
|
||
// value which we must reject. If we use ParseNonNegativeVariant
|
||
// we can't tell the difference between an unspecified radius
|
||
// and a negative radius.
|
||
if (ParseVariant(val->Item(IndexRadius), VARIANT_LENGTH | VARIANT_CALC,
|
||
nullptr) &&
|
||
val->Item(IndexRadius).IsLengthUnit() &&
|
||
val->Item(IndexRadius).GetFloatValue() < 0) {
|
||
return false;
|
||
}
|
||
|
||
if (aIsBoxShadow) {
|
||
// Optional spread
|
||
ParseVariant(val->Item(IndexSpread), VARIANT_LENGTH | VARIANT_CALC, nullptr);
|
||
}
|
||
|
||
if (!haveColor) {
|
||
// Optional color
|
||
ParseVariant(val->Item(IndexColor), VARIANT_COLOR, nullptr);
|
||
}
|
||
|
||
if (aIsBoxShadow && val->Item(IndexInset).GetUnit() == eCSSUnit_Null) {
|
||
// Optional inset keyword
|
||
ParseVariant(val->Item(IndexInset), VARIANT_KEYWORD,
|
||
nsCSSProps::kBoxShadowTypeKTable);
|
||
}
|
||
|
||
aValue.SetArrayValue(val, eCSSUnit_Array);
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseShadowList(nsCSSProperty aProperty)
|
||
{
|
||
nsAutoParseCompoundProperty compound(this);
|
||
bool isBoxShadow = aProperty == eCSSProperty_box_shadow;
|
||
|
||
nsCSSValue value;
|
||
if (ParseVariant(value, VARIANT_INHERIT | VARIANT_NONE, nullptr)) {
|
||
// 'inherit', 'initial', 'unset' and 'none' must be alone
|
||
if (!ExpectEndProperty()) {
|
||
return false;
|
||
}
|
||
} else {
|
||
nsCSSValueList* cur = value.SetListValue();
|
||
for (;;) {
|
||
if (!ParseShadowItem(cur->mValue, isBoxShadow)) {
|
||
return false;
|
||
}
|
||
if (CheckEndProperty()) {
|
||
break;
|
||
}
|
||
if (!ExpectSymbol(',', true)) {
|
||
return false;
|
||
}
|
||
cur->mNext = new nsCSSValueList;
|
||
cur = cur->mNext;
|
||
}
|
||
}
|
||
AppendValue(aProperty, value);
|
||
return true;
|
||
}
|
||
|
||
int32_t
|
||
CSSParserImpl::GetNamespaceIdForPrefix(const nsString& aPrefix)
|
||
{
|
||
NS_PRECONDITION(!aPrefix.IsEmpty(), "Must have a prefix here");
|
||
|
||
int32_t nameSpaceID = kNameSpaceID_Unknown;
|
||
if (mNameSpaceMap) {
|
||
// user-specified identifiers are case-sensitive (bug 416106)
|
||
nsCOMPtr<nsIAtom> prefix = do_GetAtom(aPrefix);
|
||
if (!prefix) {
|
||
NS_RUNTIMEABORT("do_GetAtom failed - out of memory?");
|
||
}
|
||
nameSpaceID = mNameSpaceMap->FindNameSpaceID(prefix);
|
||
}
|
||
// else no declared namespaces
|
||
|
||
if (nameSpaceID == kNameSpaceID_Unknown) { // unknown prefix, dump it
|
||
REPORT_UNEXPECTED_P(PEUnknownNamespacePrefix, aPrefix);
|
||
}
|
||
|
||
return nameSpaceID;
|
||
}
|
||
|
||
void
|
||
CSSParserImpl::SetDefaultNamespaceOnSelector(nsCSSSelector& aSelector)
|
||
{
|
||
if (mNameSpaceMap) {
|
||
aSelector.SetNameSpace(mNameSpaceMap->FindNameSpaceID(nullptr));
|
||
} else {
|
||
aSelector.SetNameSpace(kNameSpaceID_Unknown); // wildcard
|
||
}
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParsePaint(nsCSSProperty aPropID)
|
||
{
|
||
nsCSSValue x, y;
|
||
|
||
if (!ParseVariant(x, VARIANT_HC | VARIANT_NONE | VARIANT_URL |
|
||
VARIANT_OPENTYPE_SVG_KEYWORD,
|
||
nsCSSProps::kContextPatternKTable)) {
|
||
return false;
|
||
}
|
||
|
||
bool canHaveFallback = x.GetUnit() == eCSSUnit_URL ||
|
||
x.GetUnit() == eCSSUnit_Enumerated;
|
||
if (canHaveFallback) {
|
||
if (!ParseVariant(y, VARIANT_COLOR | VARIANT_NONE, nullptr))
|
||
y.SetNoneValue();
|
||
}
|
||
if (!ExpectEndProperty())
|
||
return false;
|
||
|
||
if (!canHaveFallback) {
|
||
AppendValue(aPropID, x);
|
||
} else {
|
||
nsCSSValue val;
|
||
val.SetPairValue(x, y);
|
||
AppendValue(aPropID, val);
|
||
}
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseDasharray()
|
||
{
|
||
nsCSSValue value;
|
||
|
||
if (ParseVariant(value, VARIANT_INHERIT | VARIANT_NONE |
|
||
VARIANT_OPENTYPE_SVG_KEYWORD,
|
||
nsCSSProps::kStrokeContextValueKTable)) {
|
||
// 'inherit', 'initial', 'unset' and 'none' are only allowed on their own
|
||
if (!ExpectEndProperty()) {
|
||
return false;
|
||
}
|
||
} else {
|
||
nsCSSValueList *cur = value.SetListValue();
|
||
for (;;) {
|
||
if (!ParseNonNegativeVariant(cur->mValue, VARIANT_LPN, nullptr)) {
|
||
return false;
|
||
}
|
||
if (CheckEndProperty()) {
|
||
break;
|
||
}
|
||
// skip optional commas between elements
|
||
(void)ExpectSymbol(',', true);
|
||
|
||
cur->mNext = new nsCSSValueList;
|
||
cur = cur->mNext;
|
||
}
|
||
}
|
||
AppendValue(eCSSProperty_stroke_dasharray, value);
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseMarker()
|
||
{
|
||
nsCSSValue marker;
|
||
if (ParseSingleValueProperty(marker, eCSSProperty_marker_end)) {
|
||
if (ExpectEndProperty()) {
|
||
AppendValue(eCSSProperty_marker_end, marker);
|
||
AppendValue(eCSSProperty_marker_mid, marker);
|
||
AppendValue(eCSSProperty_marker_start, marker);
|
||
return true;
|
||
}
|
||
}
|
||
return false;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParsePaintOrder()
|
||
{
|
||
static_assert
|
||
((1 << NS_STYLE_PAINT_ORDER_BITWIDTH) > NS_STYLE_PAINT_ORDER_LAST_VALUE,
|
||
"bitfield width insufficient for paint-order constants");
|
||
|
||
static const int32_t kPaintOrderKTable[] = {
|
||
eCSSKeyword_normal, NS_STYLE_PAINT_ORDER_NORMAL,
|
||
eCSSKeyword_fill, NS_STYLE_PAINT_ORDER_FILL,
|
||
eCSSKeyword_stroke, NS_STYLE_PAINT_ORDER_STROKE,
|
||
eCSSKeyword_markers, NS_STYLE_PAINT_ORDER_MARKERS,
|
||
eCSSKeyword_UNKNOWN,-1
|
||
};
|
||
|
||
static_assert(NS_ARRAY_LENGTH(kPaintOrderKTable) ==
|
||
2 * (NS_STYLE_PAINT_ORDER_LAST_VALUE + 2),
|
||
"missing paint-order values in kPaintOrderKTable");
|
||
|
||
nsCSSValue value;
|
||
if (!ParseVariant(value, VARIANT_HK, kPaintOrderKTable)) {
|
||
return false;
|
||
}
|
||
|
||
uint32_t seen = 0;
|
||
uint32_t order = 0;
|
||
uint32_t position = 0;
|
||
|
||
// Ensure that even cast to a signed int32_t when stored in CSSValue,
|
||
// we have enough space for the entire paint-order value.
|
||
static_assert
|
||
(NS_STYLE_PAINT_ORDER_BITWIDTH * NS_STYLE_PAINT_ORDER_LAST_VALUE < 32,
|
||
"seen and order not big enough");
|
||
|
||
if (value.GetUnit() == eCSSUnit_Enumerated) {
|
||
uint32_t component = static_cast<uint32_t>(value.GetIntValue());
|
||
if (component != NS_STYLE_PAINT_ORDER_NORMAL) {
|
||
bool parsedOK = true;
|
||
for (;;) {
|
||
if (seen & (1 << component)) {
|
||
// Already seen this component.
|
||
UngetToken();
|
||
parsedOK = false;
|
||
break;
|
||
}
|
||
seen |= (1 << component);
|
||
order |= (component << position);
|
||
position += NS_STYLE_PAINT_ORDER_BITWIDTH;
|
||
if (!ParseEnum(value, kPaintOrderKTable)) {
|
||
break;
|
||
}
|
||
component = value.GetIntValue();
|
||
if (component == NS_STYLE_PAINT_ORDER_NORMAL) {
|
||
// Can't have "normal" in the middle of the list of paint components.
|
||
UngetToken();
|
||
parsedOK = false;
|
||
break;
|
||
}
|
||
}
|
||
|
||
// Fill in the remaining paint-order components in the order of their
|
||
// constant values.
|
||
if (parsedOK) {
|
||
for (component = 1;
|
||
component <= NS_STYLE_PAINT_ORDER_LAST_VALUE;
|
||
component++) {
|
||
if (!(seen & (1 << component))) {
|
||
order |= (component << position);
|
||
position += NS_STYLE_PAINT_ORDER_BITWIDTH;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
static_assert(NS_STYLE_PAINT_ORDER_NORMAL == 0,
|
||
"unexpected value for NS_STYLE_PAINT_ORDER_NORMAL");
|
||
value.SetIntValue(static_cast<int32_t>(order), eCSSUnit_Enumerated);
|
||
}
|
||
|
||
if (!ExpectEndProperty()) {
|
||
return false;
|
||
}
|
||
|
||
AppendValue(eCSSProperty_paint_order, value);
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::BackslashDropped()
|
||
{
|
||
return mScanner->GetEOFCharacters() &
|
||
nsCSSScanner::eEOFCharacters_DropBackslash;
|
||
}
|
||
|
||
void
|
||
CSSParserImpl::AppendImpliedEOFCharacters(nsAString& aResult)
|
||
{
|
||
nsCSSScanner::AppendImpliedEOFCharacters(mScanner->GetEOFCharacters(),
|
||
aResult);
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseAll()
|
||
{
|
||
nsCSSValue value;
|
||
if (!ParseVariant(value, VARIANT_INHERIT, nullptr)) {
|
||
return false;
|
||
}
|
||
|
||
CSSPROPS_FOR_SHORTHAND_SUBPROPERTIES(p, eCSSProperty_all) {
|
||
AppendValue(*p, value);
|
||
}
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseVariableDeclaration(CSSVariableDeclarations::Type* aType,
|
||
nsString& aValue)
|
||
{
|
||
CSSVariableDeclarations::Type type;
|
||
nsString variableValue;
|
||
bool dropBackslash;
|
||
nsString impliedCharacters;
|
||
|
||
// Record the token stream while parsing a variable value.
|
||
if (!mInSupportsCondition) {
|
||
mScanner->StartRecording();
|
||
}
|
||
if (!ParseValueWithVariables(&type, &dropBackslash, impliedCharacters,
|
||
nullptr, nullptr)) {
|
||
if (!mInSupportsCondition) {
|
||
mScanner->StopRecording();
|
||
}
|
||
return false;
|
||
}
|
||
|
||
if (!mInSupportsCondition) {
|
||
if (type == CSSVariableDeclarations::eTokenStream) {
|
||
// This was indeed a token stream value, so store it in variableValue.
|
||
mScanner->StopRecording(variableValue);
|
||
if (dropBackslash) {
|
||
MOZ_ASSERT(!variableValue.IsEmpty() &&
|
||
variableValue[variableValue.Length() - 1] == '\\');
|
||
variableValue.Truncate(variableValue.Length() - 1);
|
||
}
|
||
variableValue.Append(impliedCharacters);
|
||
} else {
|
||
// This was either 'inherit' or 'initial'; we don't need the recorded
|
||
// input.
|
||
mScanner->StopRecording();
|
||
}
|
||
}
|
||
|
||
if (mHavePushBack && type == CSSVariableDeclarations::eTokenStream) {
|
||
// If we came to the end of a valid variable declaration and a token was
|
||
// pushed back, then it would have been ended by '!', ')', ';', ']' or '}'.
|
||
// We need to remove it from the recorded variable value.
|
||
MOZ_ASSERT(mToken.IsSymbol('!') ||
|
||
mToken.IsSymbol(')') ||
|
||
mToken.IsSymbol(';') ||
|
||
mToken.IsSymbol(']') ||
|
||
mToken.IsSymbol('}'));
|
||
if (!mInSupportsCondition) {
|
||
MOZ_ASSERT(!variableValue.IsEmpty());
|
||
MOZ_ASSERT(variableValue[variableValue.Length() - 1] == mToken.mSymbol);
|
||
variableValue.Truncate(variableValue.Length() - 1);
|
||
}
|
||
}
|
||
|
||
*aType = type;
|
||
aValue = variableValue;
|
||
return true;
|
||
}
|
||
|
||
bool
|
||
CSSParserImpl::ParseValueWithVariables(CSSVariableDeclarations::Type* aType,
|
||
bool* aDropBackslash,
|
||
nsString& aImpliedCharacters,
|
||
void (*aFunc)(const nsAString&, void*),
|
||
void* aData)
|
||
{
|
||
// A property value is invalid if it contains variable references and also:
|
||
//
|
||
// * has unbalanced parens, brackets or braces
|
||
// * has any BAD_STRING or BAD_URL tokens
|
||
// * has any ';' or '!' tokens at the top level of a variable reference's
|
||
// fallback
|
||
//
|
||
// If the property is a custom property (i.e. a variable declaration), then
|
||
// it is also invalid if it consists of no tokens, such as:
|
||
//
|
||
// var-invalid:;
|
||
//
|
||
// Note that is valid for a custom property to have a value that consists
|
||
// solely of white space, such as:
|
||
//
|
||
// var-valid: ;
|
||
|
||
// Stack of closing characters for currently open constructs.
|
||
StopSymbolCharStack stack;
|
||
|
||
// Indexes into ')' characters in |stack| that correspond to "var(". This
|
||
// is used to stop parsing when we encounter a '!' or ';' at the top level
|
||
// of a variable reference's fallback.
|
||
nsAutoTArray<uint32_t, 16> references;
|
||
|
||
if (!GetToken(false)) {
|
||
// Variable value was empty since we reached EOF.
|
||
REPORT_UNEXPECTED_EOF(PEVariableEOF);
|
||
return false;
|
||
}
|
||
|
||
if (mToken.mType == eCSSToken_Symbol &&
|
||
(mToken.mSymbol == '!' ||
|
||
mToken.mSymbol == ')' ||
|
||
mToken.mSymbol == ';' ||
|
||
mToken.mSymbol == ']' ||
|
||
mToken.mSymbol == '}')) {
|
||
// Variable value was empty since we reached the end of the construct.
|
||
UngetToken();
|
||
REPORT_UNEXPECTED_TOKEN(PEVariableEmpty);
|
||
return false;
|
||
}
|
||
|
||
if (mToken.mType == eCSSToken_Whitespace) {
|
||
if (!GetToken(true)) {
|
||
// Variable value was white space only. This is valid.
|
||
MOZ_ASSERT(!BackslashDropped());
|
||
*aType = CSSVariableDeclarations::eTokenStream;
|
||
*aDropBackslash = false;
|
||
AppendImpliedEOFCharacters(aImpliedCharacters);
|
||
return true;
|
||
}
|
||
}
|
||
|
||
// Look for 'initial', 'inherit' or 'unset' as the first non-white space
|
||
// token.
|
||
CSSVariableDeclarations::Type type = CSSVariableDeclarations::eTokenStream;
|
||
if (mToken.mType == eCSSToken_Ident) {
|
||
if (mToken.mIdent.LowerCaseEqualsLiteral("initial")) {
|
||
type = CSSVariableDeclarations::eInitial;
|
||
} else if (mToken.mIdent.LowerCaseEqualsLiteral("inherit")) {
|
||
type = CSSVariableDeclarations::eInherit;
|
||
} else if (mToken.mIdent.LowerCaseEqualsLiteral("unset")) {
|
||
type = CSSVariableDeclarations::eUnset;
|
||
}
|
||
}
|
||
|
||
if (type != CSSVariableDeclarations::eTokenStream) {
|
||
if (!GetToken(true)) {
|
||
// Variable value was 'initial' or 'inherit' followed by EOF.
|
||
MOZ_ASSERT(!BackslashDropped());
|
||
*aType = type;
|
||
*aDropBackslash = false;
|
||
AppendImpliedEOFCharacters(aImpliedCharacters);
|
||
return true;
|
||
}
|
||
UngetToken();
|
||
if (mToken.mType == eCSSToken_Symbol &&
|
||
(mToken.mSymbol == '!' ||
|
||
mToken.mSymbol == ')' ||
|
||
mToken.mSymbol == ';' ||
|
||
mToken.mSymbol == ']' ||
|
||
mToken.mSymbol == '}')) {
|
||
// Variable value was 'initial' or 'inherit' followed by the end
|
||
// of the declaration.
|
||
MOZ_ASSERT(!BackslashDropped());
|
||
*aType = type;
|
||
*aDropBackslash = false;
|
||
return true;
|
||
}
|
||
}
|
||
|
||
do {
|
||
switch (mToken.mType) {
|
||
case eCSSToken_Symbol:
|
||
if (mToken.mSymbol == '(') {
|
||
stack.AppendElement(')');
|
||
} else if (mToken.mSymbol == '[') {
|
||
stack.AppendElement(']');
|
||
} else if (mToken.mSymbol == '{') {
|
||
stack.AppendElement('}');
|
||
} else if (mToken.mSymbol == ';' ||
|
||
mToken.mSymbol == '!') {
|
||
if (stack.IsEmpty()) {
|
||
UngetToken();
|
||
MOZ_ASSERT(!BackslashDropped());
|
||
*aType = CSSVariableDeclarations::eTokenStream;
|
||
*aDropBackslash = false;
|
||
return true;
|
||
} else if (!references.IsEmpty() &&
|
||
references.LastElement() == stack.Length() - 1) {
|
||
REPORT_UNEXPECTED_TOKEN(PEInvalidVariableTokenFallback);
|
||
SkipUntilAllOf(stack);
|
||
return false;
|
||
}
|
||
} else if (mToken.mSymbol == ')' ||
|
||
mToken.mSymbol == ']' ||
|
||
mToken.mSymbol == '}') {
|
||
for (;;) {
|
||
if (stack.IsEmpty()) {
|
||
UngetToken();
|
||
MOZ_ASSERT(!BackslashDropped());
|
||
*aType = CSSVariableDeclarations::eTokenStream;
|
||
*aDropBackslash = false;
|
||
return true;
|
||
}
|
||
char16_t c = stack.LastElement();
|
||
stack.TruncateLength(stack.Length() - 1);
|
||
if (!references.IsEmpty() &&
|
||
references.LastElement() == stack.Length()) {
|
||
references.TruncateLength(references.Length() - 1);
|
||
}
|
||
if (mToken.mSymbol == c) {
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
break;
|
||
|
||
case eCSSToken_Function:
|
||
if (mToken.mIdent.LowerCaseEqualsLiteral("var")) {
|
||
if (!GetToken(true)) {
|
||
// EOF directly after "var(".
|
||
REPORT_UNEXPECTED_EOF(PEExpectedVariableNameEOF);
|
||
return false;
|
||
}
|
||
if (mToken.mType != eCSSToken_Ident) {
|
||
// There must be an identifier directly after the "var(".
|
||
UngetToken();
|
||
REPORT_UNEXPECTED_TOKEN(PEExpectedVariableName);
|
||
SkipUntil(')');
|
||
SkipUntilAllOf(stack);
|
||
return false;
|
||
}
|
||
if (aFunc) {
|
||
aFunc(mToken.mIdent, aData);
|
||
}
|
||
if (!GetToken(true)) {
|
||
// EOF right after "var(<ident>".
|
||
stack.AppendElement(')');
|
||
} else if (mToken.IsSymbol(',')) {
|
||
// Variable reference with fallback.
|
||
if (!GetToken(false) || mToken.IsSymbol(')')) {
|
||
// Comma must be followed by at least one fallback token.
|
||
REPORT_UNEXPECTED(PEExpectedVariableFallback);
|
||
SkipUntilAllOf(stack);
|
||
return false;
|
||
}
|
||
UngetToken();
|
||
references.AppendElement(stack.Length());
|
||
stack.AppendElement(')');
|
||
} else if (mToken.IsSymbol(')')) {
|
||
// Correctly closed variable reference.
|
||
} else {
|
||
// Malformed variable reference.
|
||
REPORT_UNEXPECTED_TOKEN(PEExpectedVariableCommaOrCloseParen);
|
||
SkipUntil(')');
|
||
SkipUntilAllOf(stack);
|
||
return false;
|
||
}
|
||
} else {
|
||
stack.AppendElement(')');
|
||
}
|
||
break;
|
||
|
||
case eCSSToken_Bad_String:
|
||
SkipUntilAllOf(stack);
|
||
return false;
|
||
|
||
case eCSSToken_Bad_URL:
|
||
SkipUntil(')');
|
||
SkipUntilAllOf(stack);
|
||
return false;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
} while (GetToken(true));
|
||
|
||
// Append any implied closing characters.
|
||
*aDropBackslash = BackslashDropped();
|
||
AppendImpliedEOFCharacters(aImpliedCharacters);
|
||
uint32_t i = stack.Length();
|
||
while (i--) {
|
||
aImpliedCharacters.Append(stack[i]);
|
||
}
|
||
|
||
*aType = type;
|
||
return true;
|
||
}
|
||
|
||
} // anonymous namespace
|
||
|
||
// Recycling of parser implementation objects
|
||
|
||
static CSSParserImpl* gFreeList = nullptr;
|
||
|
||
nsCSSParser::nsCSSParser(mozilla::css::Loader* aLoader,
|
||
nsCSSStyleSheet* aSheet)
|
||
{
|
||
CSSParserImpl *impl = gFreeList;
|
||
if (impl) {
|
||
gFreeList = impl->mNextFree;
|
||
impl->mNextFree = nullptr;
|
||
} else {
|
||
impl = new CSSParserImpl();
|
||
}
|
||
|
||
if (aLoader) {
|
||
impl->SetChildLoader(aLoader);
|
||
impl->SetQuirkMode(aLoader->GetCompatibilityMode() ==
|
||
eCompatibility_NavQuirks);
|
||
}
|
||
if (aSheet) {
|
||
impl->SetStyleSheet(aSheet);
|
||
}
|
||
|
||
mImpl = static_cast<void*>(impl);
|
||
}
|
||
|
||
nsCSSParser::~nsCSSParser()
|
||
{
|
||
CSSParserImpl *impl = static_cast<CSSParserImpl*>(mImpl);
|
||
impl->Reset();
|
||
impl->mNextFree = gFreeList;
|
||
gFreeList = impl;
|
||
}
|
||
|
||
/* static */ void
|
||
nsCSSParser::Shutdown()
|
||
{
|
||
CSSParserImpl *tofree = gFreeList;
|
||
CSSParserImpl *next;
|
||
while (tofree)
|
||
{
|
||
next = tofree->mNextFree;
|
||
delete tofree;
|
||
tofree = next;
|
||
}
|
||
}
|
||
|
||
// Wrapper methods
|
||
|
||
nsresult
|
||
nsCSSParser::SetStyleSheet(nsCSSStyleSheet* aSheet)
|
||
{
|
||
return static_cast<CSSParserImpl*>(mImpl)->
|
||
SetStyleSheet(aSheet);
|
||
}
|
||
|
||
nsresult
|
||
nsCSSParser::SetQuirkMode(bool aQuirkMode)
|
||
{
|
||
return static_cast<CSSParserImpl*>(mImpl)->
|
||
SetQuirkMode(aQuirkMode);
|
||
}
|
||
|
||
nsresult
|
||
nsCSSParser::SetChildLoader(mozilla::css::Loader* aChildLoader)
|
||
{
|
||
return static_cast<CSSParserImpl*>(mImpl)->
|
||
SetChildLoader(aChildLoader);
|
||
}
|
||
|
||
nsresult
|
||
nsCSSParser::ParseSheet(const nsAString& aInput,
|
||
nsIURI* aSheetURI,
|
||
nsIURI* aBaseURI,
|
||
nsIPrincipal* aSheetPrincipal,
|
||
uint32_t aLineNumber,
|
||
bool aAllowUnsafeRules)
|
||
{
|
||
return static_cast<CSSParserImpl*>(mImpl)->
|
||
ParseSheet(aInput, aSheetURI, aBaseURI, aSheetPrincipal, aLineNumber,
|
||
aAllowUnsafeRules);
|
||
}
|
||
|
||
nsresult
|
||
nsCSSParser::ParseStyleAttribute(const nsAString& aAttributeValue,
|
||
nsIURI* aDocURI,
|
||
nsIURI* aBaseURI,
|
||
nsIPrincipal* aNodePrincipal,
|
||
css::StyleRule** aResult)
|
||
{
|
||
return static_cast<CSSParserImpl*>(mImpl)->
|
||
ParseStyleAttribute(aAttributeValue, aDocURI, aBaseURI,
|
||
aNodePrincipal, aResult);
|
||
}
|
||
|
||
nsresult
|
||
nsCSSParser::ParseDeclarations(const nsAString& aBuffer,
|
||
nsIURI* aSheetURI,
|
||
nsIURI* aBaseURI,
|
||
nsIPrincipal* aSheetPrincipal,
|
||
css::Declaration* aDeclaration,
|
||
bool* aChanged)
|
||
{
|
||
return static_cast<CSSParserImpl*>(mImpl)->
|
||
ParseDeclarations(aBuffer, aSheetURI, aBaseURI, aSheetPrincipal,
|
||
aDeclaration, aChanged);
|
||
}
|
||
|
||
nsresult
|
||
nsCSSParser::ParseRule(const nsAString& aRule,
|
||
nsIURI* aSheetURI,
|
||
nsIURI* aBaseURI,
|
||
nsIPrincipal* aSheetPrincipal,
|
||
css::Rule** aResult)
|
||
{
|
||
return static_cast<CSSParserImpl*>(mImpl)->
|
||
ParseRule(aRule, aSheetURI, aBaseURI, aSheetPrincipal, aResult);
|
||
}
|
||
|
||
nsresult
|
||
nsCSSParser::ParseProperty(const nsCSSProperty aPropID,
|
||
const nsAString& aPropValue,
|
||
nsIURI* aSheetURI,
|
||
nsIURI* aBaseURI,
|
||
nsIPrincipal* aSheetPrincipal,
|
||
css::Declaration* aDeclaration,
|
||
bool* aChanged,
|
||
bool aIsImportant,
|
||
bool aIsSVGMode)
|
||
{
|
||
return static_cast<CSSParserImpl*>(mImpl)->
|
||
ParseProperty(aPropID, aPropValue, aSheetURI, aBaseURI,
|
||
aSheetPrincipal, aDeclaration, aChanged,
|
||
aIsImportant, aIsSVGMode);
|
||
}
|
||
|
||
nsresult
|
||
nsCSSParser::ParseVariable(const nsAString& aVariableName,
|
||
const nsAString& aPropValue,
|
||
nsIURI* aSheetURI,
|
||
nsIURI* aBaseURI,
|
||
nsIPrincipal* aSheetPrincipal,
|
||
css::Declaration* aDeclaration,
|
||
bool* aChanged,
|
||
bool aIsImportant)
|
||
{
|
||
return static_cast<CSSParserImpl*>(mImpl)->
|
||
ParseVariable(aVariableName, aPropValue, aSheetURI, aBaseURI,
|
||
aSheetPrincipal, aDeclaration, aChanged, aIsImportant);
|
||
}
|
||
|
||
void
|
||
nsCSSParser::ParseMediaList(const nsSubstring& aBuffer,
|
||
nsIURI* aURI,
|
||
uint32_t aLineNumber,
|
||
nsMediaList* aMediaList,
|
||
bool aHTMLMode)
|
||
{
|
||
static_cast<CSSParserImpl*>(mImpl)->
|
||
ParseMediaList(aBuffer, aURI, aLineNumber, aMediaList, aHTMLMode);
|
||
}
|
||
|
||
bool
|
||
nsCSSParser::ParseColorString(const nsSubstring& aBuffer,
|
||
nsIURI* aURI,
|
||
uint32_t aLineNumber,
|
||
nsCSSValue& aValue)
|
||
{
|
||
return static_cast<CSSParserImpl*>(mImpl)->
|
||
ParseColorString(aBuffer, aURI, aLineNumber, aValue);
|
||
}
|
||
|
||
nsresult
|
||
nsCSSParser::ParseSelectorString(const nsSubstring& aSelectorString,
|
||
nsIURI* aURI,
|
||
uint32_t aLineNumber,
|
||
nsCSSSelectorList** aSelectorList)
|
||
{
|
||
return static_cast<CSSParserImpl*>(mImpl)->
|
||
ParseSelectorString(aSelectorString, aURI, aLineNumber, aSelectorList);
|
||
}
|
||
|
||
already_AddRefed<nsCSSKeyframeRule>
|
||
nsCSSParser::ParseKeyframeRule(const nsSubstring& aBuffer,
|
||
nsIURI* aURI,
|
||
uint32_t aLineNumber)
|
||
{
|
||
return static_cast<CSSParserImpl*>(mImpl)->
|
||
ParseKeyframeRule(aBuffer, aURI, aLineNumber);
|
||
}
|
||
|
||
bool
|
||
nsCSSParser::ParseKeyframeSelectorString(const nsSubstring& aSelectorString,
|
||
nsIURI* aURI,
|
||
uint32_t aLineNumber,
|
||
InfallibleTArray<float>& aSelectorList)
|
||
{
|
||
return static_cast<CSSParserImpl*>(mImpl)->
|
||
ParseKeyframeSelectorString(aSelectorString, aURI, aLineNumber,
|
||
aSelectorList);
|
||
}
|
||
|
||
bool
|
||
nsCSSParser::EvaluateSupportsDeclaration(const nsAString& aProperty,
|
||
const nsAString& aValue,
|
||
nsIURI* aDocURL,
|
||
nsIURI* aBaseURL,
|
||
nsIPrincipal* aDocPrincipal)
|
||
{
|
||
return static_cast<CSSParserImpl*>(mImpl)->
|
||
EvaluateSupportsDeclaration(aProperty, aValue, aDocURL, aBaseURL,
|
||
aDocPrincipal);
|
||
}
|
||
|
||
bool
|
||
nsCSSParser::EvaluateSupportsCondition(const nsAString& aCondition,
|
||
nsIURI* aDocURL,
|
||
nsIURI* aBaseURL,
|
||
nsIPrincipal* aDocPrincipal)
|
||
{
|
||
return static_cast<CSSParserImpl*>(mImpl)->
|
||
EvaluateSupportsCondition(aCondition, aDocURL, aBaseURL, aDocPrincipal);
|
||
}
|
||
|
||
bool
|
||
nsCSSParser::EnumerateVariableReferences(const nsAString& aPropertyValue,
|
||
VariableEnumFunc aFunc,
|
||
void* aData)
|
||
{
|
||
return static_cast<CSSParserImpl*>(mImpl)->
|
||
EnumerateVariableReferences(aPropertyValue, aFunc, aData);
|
||
}
|
||
|
||
bool
|
||
nsCSSParser::ResolveVariableValue(const nsAString& aPropertyValue,
|
||
const CSSVariableValues* aVariables,
|
||
nsString& aResult,
|
||
nsCSSTokenSerializationType& aFirstToken,
|
||
nsCSSTokenSerializationType& aLastToken)
|
||
{
|
||
return static_cast<CSSParserImpl*>(mImpl)->
|
||
ResolveVariableValue(aPropertyValue, aVariables,
|
||
aResult, aFirstToken, aLastToken);
|
||
}
|
||
|
||
void
|
||
nsCSSParser::ParsePropertyWithVariableReferences(
|
||
nsCSSProperty aPropertyID,
|
||
nsCSSProperty aShorthandPropertyID,
|
||
const nsAString& aValue,
|
||
const CSSVariableValues* aVariables,
|
||
nsRuleData* aRuleData,
|
||
nsIURI* aDocURL,
|
||
nsIURI* aBaseURL,
|
||
nsIPrincipal* aDocPrincipal,
|
||
nsCSSStyleSheet* aSheet,
|
||
uint32_t aLineNumber,
|
||
uint32_t aLineOffset)
|
||
{
|
||
static_cast<CSSParserImpl*>(mImpl)->
|
||
ParsePropertyWithVariableReferences(aPropertyID, aShorthandPropertyID,
|
||
aValue, aVariables, aRuleData, aDocURL,
|
||
aBaseURL, aDocPrincipal, aSheet,
|
||
aLineNumber, aLineOffset);
|
||
}
|