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gecko-dev/layout/style/nsCSSParser.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* emk <VYV03354@nifty.ne.jp>
* Daniel Glazman <glazman@netscape.com>
* L. David Baron <dbaron@dbaron.org>
* Boris Zbarsky <bzbarsky@mit.edu>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsICSSParser.h"
#include "nsCSSProps.h"
#include "nsCSSKeywords.h"
#include "nsCSSScanner.h"
#include "nsICSSLoader.h"
#include "nsICSSStyleRule.h"
#include "nsICSSImportRule.h"
#include "nsICSSMediaRule.h"
#include "nsICSSNameSpaceRule.h"
#include "nsIUnicharInputStream.h"
#include "nsICSSStyleSheet.h"
#include "nsCSSDeclaration.h"
#include "nsStyleConsts.h"
#include "nsIURL.h"
#include "nsNetUtil.h"
#include "nsCOMPtr.h"
#include "nsString.h"
#include "nsReadableUtils.h"
#include "nsUnicharUtils.h"
#include "nsIAtom.h"
#include "nsVoidArray.h"
#include "nsISupportsArray.h"
#include "nsCOMArray.h"
#include "nsColor.h"
#include "nsStyleConsts.h"
#include "nsLayoutAtoms.h"
#include "nsCSSPseudoClasses.h"
#include "nsCSSPseudoElements.h"
#include "nsCSSAnonBoxes.h"
#include "nsINameSpaceManager.h"
#include "nsINameSpace.h"
#include "nsThemeConstants.h"
#include "nsContentErrors.h"
#include "nsUnitConversion.h"
#include "nsPrintfCString.h"
#include "prprf.h"
#include "math.h"
#define ENABLE_OUTLINE // un-comment this to enable the outline properties (bug 9816)
// XXX un-commenting for temporary fix for nsbeta3+ Bug 48973
// so we can use "mozoutline
//#define ENABLE_COUNTERS // un-comment this to enable counters (bug 15174)
//----------------------------------------------------------------------
// Your basic top-down recursive descent style parser
class CSSParserImpl : public nsICSSParser {
public:
CSSParserImpl();
virtual ~CSSParserImpl();
NS_DECL_ISUPPORTS
NS_IMETHOD SetStyleSheet(nsICSSStyleSheet* aSheet);
NS_IMETHOD SetCaseSensitive(PRBool aCaseSensitive);
NS_IMETHOD SetQuirkMode(PRBool aQuirkMode);
NS_IMETHOD SetChildLoader(nsICSSLoader* aChildLoader);
NS_IMETHOD Parse(nsIUnicharInputStream* aInput,
nsIURI* aInputURL,
nsICSSStyleSheet*& aResult);
NS_IMETHOD ParseStyleAttribute(const nsAString& aAttributeValue,
nsIURI* aBaseURL,
nsICSSStyleRule** aResult);
NS_IMETHOD ParseAndAppendDeclaration(const nsAString& aBuffer,
nsIURI* aBaseURL,
nsCSSDeclaration* aDeclaration,
PRBool aParseOnlyOneDecl,
PRBool* aChanged,
PRBool aClearOldDecl);
NS_IMETHOD ParseRule(const nsAString& aRule,
nsIURI* aBaseURL,
nsISupportsArray** aResult);
NS_IMETHOD ParseProperty(const nsCSSProperty aPropID,
const nsAString& aPropValue,
nsIURI* aBaseURL,
nsCSSDeclaration* aDeclaration,
PRBool* aChanged);
void AppendRule(nsICSSRule* aRule);
protected:
nsresult InitScanner(nsIUnicharInputStream* aInput, nsIURI* aURI);
nsresult ReleaseScanner(void);
PRBool GetToken(nsresult& aErrorCode, PRBool aSkipWS);
PRBool GetURLToken(nsresult& aErrorCode, PRBool aSkipWS);
void UngetToken();
PRBool ExpectSymbol(nsresult& aErrorCode, PRUnichar aSymbol, PRBool aSkipWS);
PRBool ExpectEndProperty(nsresult& aErrorCode, PRBool aSkipWS);
nsString* NextIdent(nsresult& aErrorCode);
void SkipUntil(nsresult& aErrorCode, PRUnichar aStopSymbol);
void SkipRuleSet(nsresult& aErrorCode);
PRBool SkipAtRule(nsresult& aErrorCode);
PRBool SkipDeclaration(nsresult& aErrorCode, PRBool aCheckForBraces);
PRBool PushGroup(nsICSSGroupRule* aRule);
void PopGroup(void);
PRBool ParseRuleSet(nsresult& aErrorCode, RuleAppendFunc aAppendFunc, void* aProcessData);
PRBool ParseAtRule(nsresult& aErrorCode, RuleAppendFunc aAppendFunc, void* aProcessData);
PRBool ParseCharsetRule(nsresult& aErrorCode, RuleAppendFunc aAppendFunc, void* aProcessData);
PRBool ParseImportRule(nsresult& aErrorCode, RuleAppendFunc aAppendFunc, void* aProcessData);
PRBool GatherMedia(nsresult& aErrorCode, nsISupportsArray* aMediaAtoms);
PRBool ProcessImport(nsresult& aErrorCode,
const nsString& aURLSpec,
nsISupportsArray* aMedia,
RuleAppendFunc aAppendFunc,
void* aProcessData);
PRBool ParseMediaRule(nsresult& aErrorCode, RuleAppendFunc aAppendFunc, void* aProcessData);
PRBool ParseNameSpaceRule(nsresult& aErrorCode, RuleAppendFunc aAppendFunc, void* aProcessData);
PRBool ProcessNameSpace(nsresult& aErrorCode, const nsString& aPrefix,
const nsString& aURLSpec, RuleAppendFunc aAppendFunc,
void* aProcessData);
PRBool ParseFontFaceRule(nsresult& aErrorCode, RuleAppendFunc aAppendFunc, void* aProcessData);
PRBool ParsePageRule(nsresult& aErrorCode, RuleAppendFunc aAppendFunc, void* aProcessData);
void ParseIDSelector(PRInt32& aDataMask, nsCSSSelector& aSelector,
PRInt32& aParsingStatus, nsresult& aErrorCode);
void ParseClassSelector(PRInt32& aDataMask, nsCSSSelector& aSelector,
PRInt32& aParsingStatus, nsresult& aErrorCode);
void ParsePseudoSelector(PRInt32& aDataMask, nsCSSSelector& aSelector,
PRInt32& aParsingStatus, nsresult& aErrorCode,
PRBool aIsNegated);
void ParseAttributeSelector(PRInt32& aDataMask, nsCSSSelector& aSelector,
PRInt32& aParsingStatus, nsresult& aErrorCode);
void ParseTypeOrUniversalSelector(PRInt32& aDataMask,
nsCSSSelector& aSelector,
PRInt32& aParsingStatus, nsresult& aErrorCode,
PRBool aIsNegated);
void ParseNegatedSimpleSelector(PRInt32& aDataMask, nsCSSSelector& aSelector,
PRInt32& aParsingStatus, nsresult& aErrorCode);
void ParseLangSelector(nsCSSSelector& aSelector, PRInt32& aParsingStatus,
nsresult& aErrorCode);
PRBool ParseSelectorList(nsresult& aErrorCode, nsCSSSelectorList*& aListHead);
PRBool ParseSelectorGroup(nsresult& aErrorCode, nsCSSSelectorList*& aListHead);
PRBool ParseSelector(nsresult& aErrorCode, nsCSSSelector& aSelectorResult);
nsCSSDeclaration* ParseDeclarationBlock(nsresult& aErrorCode,
PRBool aCheckForBraces);
PRBool ParseDeclaration(nsresult& aErrorCode,
nsCSSDeclaration* aDeclaration,
PRBool aCheckForBraces,
PRBool* aChanged);
// After a parse error parsing |aPropID|, clear the data in
// |mTempData|.
void ClearTempData(nsCSSProperty aPropID);
// After a successful parse of |aPropID|, transfer data from
// |mTempData| to |mData|. Set |*aChanged| to true if something
// changed, but leave it unmodified otherwise.
void TransferTempData(nsCSSDeclaration* aDeclaration,
nsCSSProperty aPropID, PRBool aIsImportant,
PRBool* aChanged);
void DoTransferTempData(nsCSSDeclaration* aDeclaration,
nsCSSProperty aPropID, PRBool aIsImportant,
PRBool* aChanged);
PRBool ParseProperty(nsresult& aErrorCode, nsCSSProperty aPropID);
PRBool ParseSingleValueProperty(nsresult& aErrorCode, nsCSSValue& aValue,
nsCSSProperty aPropID);
#ifdef MOZ_XUL
PRBool ParseTreePseudoElement(nsresult& aErrorCode, nsCSSSelector& aSelector);
#endif
// Property specific parsing routines
PRBool ParseAzimuth(nsresult& aErrorCode, nsCSSValue& aValue);
PRBool ParseBackground(nsresult& aErrorCode);
PRBool ParseBackgroundPosition(nsresult& aErrorCode);
PRBool ParseBorderColor(nsresult& aErrorCode);
PRBool ParseBorderColors(nsresult& aErrorCode,
nsCSSValueList** aResult,
nsCSSProperty aProperty);
PRBool ParseBorderSpacing(nsresult& aErrorCode);
PRBool ParseBorderSide(nsresult& aErrorCode,
const nsCSSProperty aPropIDs[],
PRBool aSetAllSides);
PRBool ParseBorderStyle(nsresult& aErrorCode);
PRBool ParseBorderWidth(nsresult& aErrorCode);
PRBool ParseBorderRadius(nsresult& aErrorCode);
#ifdef ENABLE_OUTLINE
PRBool ParseOutlineRadius(nsresult& aErrorCode);
#endif
// for 'clip' and '-moz-image-region'
PRBool ParseRect(nsCSSRect& aRect, nsresult& aErrorCode,
nsCSSProperty aPropID);
PRBool DoParseRect(nsCSSRect& aRect, nsresult& aErrorCode);
PRBool ParseContent(nsresult& aErrorCode);
PRBool SetSingleCounterValue(nsCSSCounterData** aResult,
nsresult& aErrorCode,
nsCSSProperty aPropID,
const nsCSSValue& aValue);
PRBool ParseCounterData(nsresult& aErrorCode,
nsCSSCounterData** aResult,
nsCSSProperty aPropID);
PRBool ParseCue(nsresult& aErrorCode);
PRBool ParseCursor(nsresult& aErrorCode);
PRBool ParseFont(nsresult& aErrorCode);
PRBool ParseFontWeight(nsresult& aErrorCode, nsCSSValue& aValue);
PRBool ParseFamily(nsresult& aErrorCode, nsCSSValue& aValue);
PRBool ParseListStyle(nsresult& aErrorCode);
PRBool ParseMargin(nsresult& aErrorCode);
PRBool ParseMarks(nsresult& aErrorCode, nsCSSValue& aValue);
#ifdef ENABLE_OUTLINE
PRBool ParseOutline(nsresult& aErrorCode);
#endif
PRBool ParsePadding(nsresult& aErrorCode);
PRBool ParsePause(nsresult& aErrorCode);
PRBool ParsePlayDuring(nsresult& aErrorCode);
PRBool ParseQuotes(nsresult& aErrorCode);
PRBool ParseSize(nsresult& aErrorCode);
PRBool ParseTextDecoration(nsresult& aErrorCode, nsCSSValue& aValue);
PRBool ParseTextShadow(nsresult& aErrorCode);
// Reused utility parsing routines
void AppendValue(nsCSSProperty aPropID, const nsCSSValue& aValue);
PRBool ParseBoxProperties(nsresult& aErrorCode, nsCSSRect& aResult,
const nsCSSProperty aPropIDs[]);
PRBool ParseDirectionalBoxProperty(nsresult& aErrorCode,
nsCSSProperty aProperty,
PRInt32 aSourceType);
PRInt32 ParseChoice(nsresult& aErrorCode, nsCSSValue aValues[],
const nsCSSProperty aPropIDs[], PRInt32 aNumIDs);
PRBool ParseColor(nsresult& aErrorCode, nsCSSValue& aValue);
PRBool ParseColorComponent(nsresult& aErrorCode, PRUint8& aComponent,
PRInt32& aType, char aStop);
// ParseHSLColor parses everything starting with the opening '(' up through
// and including the aStop char.
PRBool ParseHSLColor(nsresult& aErrorCode, nscolor& aColor, char aStop);
// ParseColorOpacity will enforce that the color ends with a ')' after the opacity
PRBool ParseColorOpacity(nsresult& aErrorCode, PRUint8& aOpacity);
PRBool ParseEnum(nsresult& aErrorCode, nsCSSValue& aValue, const PRInt32 aKeywordTable[]);
PRInt32 SearchKeywordTable(nsCSSKeyword aKeyword, const PRInt32 aTable[]);
PRBool ParseVariant(nsresult& aErrorCode, nsCSSValue& aValue,
PRInt32 aVariantMask,
const PRInt32 aKeywordTable[]);
PRBool ParsePositiveVariant(nsresult& aErrorCode, nsCSSValue& aValue,
PRInt32 aVariantMask,
const PRInt32 aKeywordTable[]);
PRBool ParseCounter(nsresult& aErrorCode, nsCSSValue& aValue);
PRBool ParseAttr(nsresult& aErrorCode, nsCSSValue& aValue);
PRBool ParseURL(nsresult& aErrorCode, nsCSSValue& aValue);
PRBool TranslateDimension(nsresult& aErrorCode, nsCSSValue& aValue, PRInt32 aVariantMask,
float aNumber, const nsString& aUnit);
void SetParsingCompoundProperty(PRBool aBool) {
mParsingCompoundProperty = aBool;
}
PRBool IsParsingCompoundProperty(void) {
return mParsingCompoundProperty;
}
// Current token. The value is valid after calling GetToken
nsCSSToken mToken;
// Our scanner. We own this and are responsible for deallocating it.
nsCSSScanner* mScanner;
// The URI to be used as a base for relative URIs.
nsCOMPtr<nsIURI> mURL;
// The sheet we're parsing into
nsCOMPtr<nsICSSStyleSheet> mSheet;
// Used for @import rules
nsICSSLoader* 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).
enum nsCSSSection {
eCSSSection_Charset,
eCSSSection_Import,
eCSSSection_NameSpace,
eCSSSection_General
};
nsCSSSection mSection;
nsCOMPtr<nsINameSpace> mNameSpace;
// After an UngetToken is done this flag is true. The next call to
// GetToken clears the flag.
PRPackedBool mHavePushBack;
// True if we are in quirks mode; false in standards or almost standards mode
PRPackedBool mNavQuirkMode;
// True if tagnames and attributes are case-sensitive
PRPackedBool mCaseSensitive;
// This flag is set when parsing a non-box shorthand; it's used to not apply
// some quirks during shorthand parsing
PRPackedBool mParsingCompoundProperty;
// Stack of rule groups; used for @media and such.
nsCOMArray<nsICSSGroupRule> 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;
};
PR_STATIC_CALLBACK(void) AppendRuleToArray(nsICSSRule* aRule, void* aArray)
{
nsISupportsArray* arr = (nsISupportsArray*) aArray;
arr->AppendElement(aRule);
}
PR_STATIC_CALLBACK(void) AppendRuleToSheet(nsICSSRule* aRule, void* aParser)
{
CSSParserImpl* parser = (CSSParserImpl*) aParser;
parser->AppendRule(aRule);
}
nsresult
NS_NewCSSParser(nsICSSParser** aInstancePtrResult)
{
CSSParserImpl *it = new CSSParserImpl();
if (it == nsnull) {
return NS_ERROR_OUT_OF_MEMORY;
}
return it->QueryInterface(NS_GET_IID(nsICSSParser), (void **) aInstancePtrResult);
}
#ifdef CSS_REPORT_PARSE_ERRORS
#define REPORT_UNEXPECTED(err_) \
mScanner->AddToError(err_)
#define REPORT_UNEXPECTED_EOF(err_) \
mScanner->AddToError(NS_LITERAL_STRING("Unexpected end of file while searching for ") + err_ + NS_LITERAL_STRING("."))
#define REPORT_UNEXPECTED_TOKEN(reason_) \
ReportUnexpectedToken(mScanner,mToken,reason_)
#define OUTPUT_ERROR() \
mScanner->OutputError()
#define CLEAR_ERROR() \
mScanner->ClearError()
static void ReportUnexpectedToken(nsCSSScanner *sc,
nsCSSToken& tok,
const nsAString& err)
{
// Flatten the string so we don't append to a concatenation, since
// that goes into an infinite loop. See bug 70083.
nsAutoString error(err);
error.AppendLiteral(" '");
tok.AppendToString(error);
error.AppendLiteral("'.");
sc->AddToError(error);
}
#else
#define REPORT_UNEXPECTED(err_)
#define REPORT_UNEXPECTED_EOF(err_)
#define REPORT_UNEXPECTED_TOKEN(reason_)
#define OUTPUT_ERROR()
#define CLEAR_ERROR()
#endif
CSSParserImpl::CSSParserImpl()
: mToken(),
mScanner(nsnull),
mChildLoader(nsnull),
mSection(eCSSSection_Charset),
mHavePushBack(PR_FALSE),
mNavQuirkMode(PR_FALSE),
mCaseSensitive(PR_FALSE),
mParsingCompoundProperty(PR_FALSE)
{
}
NS_IMPL_ISUPPORTS1(CSSParserImpl, nsICSSParser)
CSSParserImpl::~CSSParserImpl()
{
mData.AssertInitialState();
mTempData.AssertInitialState();
}
NS_IMETHODIMP
CSSParserImpl::SetStyleSheet(nsICSSStyleSheet* aSheet)
{
NS_PRECONDITION(nsnull != aSheet, "null ptr");
if (nsnull == aSheet) {
return NS_ERROR_NULL_POINTER;
}
if (aSheet != mSheet) {
// Switch to using the new sheet
mGroupStack.Clear();
mSheet = aSheet;
mSheet->GetNameSpace(*getter_AddRefs(mNameSpace));
}
return NS_OK;
}
NS_IMETHODIMP
CSSParserImpl::SetCaseSensitive(PRBool aCaseSensitive)
{
mCaseSensitive = aCaseSensitive;
return NS_OK;
}
NS_IMETHODIMP
CSSParserImpl::SetQuirkMode(PRBool aQuirkMode)
{
mNavQuirkMode = aQuirkMode;
return NS_OK;
}
NS_IMETHODIMP
CSSParserImpl::SetChildLoader(nsICSSLoader* aChildLoader)
{
mChildLoader = aChildLoader; // not ref counted, it owns us
return NS_OK;
}
nsresult
CSSParserImpl::InitScanner(nsIUnicharInputStream* aInput, nsIURI* aURI)
{
NS_ASSERTION(! mScanner, "already have scanner");
mScanner = new nsCSSScanner();
if (! mScanner) {
return NS_ERROR_OUT_OF_MEMORY;
}
mScanner->Init(aInput, aURI);
mURL = aURI;
mHavePushBack = PR_FALSE;
return NS_OK;
}
nsresult
CSSParserImpl::ReleaseScanner(void)
{
if (mScanner) {
delete mScanner;
mScanner = nsnull;
}
mURL = nsnull;
return NS_OK;
}
NS_IMETHODIMP
CSSParserImpl::Parse(nsIUnicharInputStream* aInput,
nsIURI* aInputURL,
nsICSSStyleSheet*& aResult)
{
NS_ASSERTION(nsnull != aInputURL, "need base URL");
if (! mSheet) {
NS_NewCSSStyleSheet(getter_AddRefs(mSheet), aInputURL);
}
#ifdef DEBUG
else {
nsCOMPtr<nsIURI> uri;
mSheet->GetURL(*getter_AddRefs(uri));
PRBool equal;
aInputURL->Equals(uri, &equal);
NS_ASSERTION(equal, "Sheet URI does not match passed URI");
}
#endif
if (! mSheet) {
return NS_ERROR_OUT_OF_MEMORY;
}
nsresult errorCode = NS_OK;
nsresult result = InitScanner(aInput, aInputURL);
if (! NS_SUCCEEDED(result)) {
return result;
}
PRInt32 ruleCount = 0;
mSheet->StyleRuleCount(ruleCount);
if (0 < ruleCount) {
nsICSSRule* lastRule = nsnull;
mSheet->GetStyleRuleAt(ruleCount - 1, lastRule);
if (lastRule) {
PRInt32 type;
lastRule->GetType(type);
switch (type) {
case nsICSSRule::CHARSET_RULE:
case nsICSSRule::IMPORT_RULE:
mSection = eCSSSection_Import;
break;
case nsICSSRule::NAMESPACE_RULE:
mSection = eCSSSection_NameSpace;
break;
default:
mSection = eCSSSection_General;
break;
}
NS_RELEASE(lastRule);
}
}
else {
mSection = eCSSSection_Charset; // sheet is empty, any rules are fair
}
nsCSSToken* tk = &mToken;
for (;;) {
// Get next non-whitespace token
if (!GetToken(errorCode, PR_TRUE)) {
OUTPUT_ERROR();
break;
}
if (eCSSToken_HTMLComment == tk->mType) {
continue; // legal here only
}
if (eCSSToken_AtKeyword == tk->mType) {
ParseAtRule(errorCode, AppendRuleToSheet, this);
continue;
}
UngetToken();
if (ParseRuleSet(errorCode, AppendRuleToSheet, this)) {
mSection = eCSSSection_General;
}
}
ReleaseScanner();
aResult = mSheet;
NS_ADDREF(aResult);
return NS_OK;
}
NS_IMETHODIMP
CSSParserImpl::ParseStyleAttribute(const nsAString& aAttributeValue,
nsIURI* aBaseURL,
nsICSSStyleRule** aResult)
{
NS_ASSERTION(nsnull != aBaseURL, "need base URL");
// XXXldb XXXperf nsIUnicharInputStream is horrible! It makes us make
// a copy.
nsString* str = new nsAutoString(aAttributeValue);
if (nsnull == str) {
return NS_ERROR_OUT_OF_MEMORY;
}
nsIUnicharInputStream* input = nsnull;
nsresult rv = NS_NewStringUnicharInputStream(&input, str);
if (NS_OK != rv) {
delete str;
return rv;
}
rv = InitScanner(input, aBaseURL);
NS_RELEASE(input);
if (! NS_SUCCEEDED(rv)) {
return rv;
}
mSection = eCSSSection_General;
nsresult errorCode = NS_OK;
// In quirks mode, allow style declarations to have braces or not
// (bug 99554).
PRBool haveBraces;
if (mNavQuirkMode) {
GetToken(errorCode, PR_TRUE);
haveBraces = eCSSToken_Symbol == mToken.mType &&
'{' == mToken.mSymbol;
UngetToken();
}
else {
haveBraces = PR_FALSE;
}
nsCSSDeclaration* declaration = ParseDeclarationBlock(errorCode, haveBraces);
if (declaration) {
// Create a style rule for the delcaration
nsICSSStyleRule* rule = nsnull;
rv = NS_NewCSSStyleRule(&rule, nsnull, declaration);
if (NS_FAILED(rv)) {
declaration->RuleAbort();
ReleaseScanner();
return rv;
}
*aResult = rule;
}
else {
*aResult = nsnull;
}
ReleaseScanner();
return NS_OK;
}
NS_IMETHODIMP
CSSParserImpl::ParseAndAppendDeclaration(const nsAString& aBuffer,
nsIURI* aBaseURL,
nsCSSDeclaration* aDeclaration,
PRBool aParseOnlyOneDecl,
PRBool* aChanged,
PRBool aClearOldDecl)
{
// NS_ASSERTION(nsnull != aBaseURL, "need base URL");
*aChanged = PR_FALSE;
nsString* str = new nsString(aBuffer);
if (nsnull == str) {
return NS_ERROR_OUT_OF_MEMORY;
}
nsIUnicharInputStream* input = nsnull;
nsresult rv = NS_NewStringUnicharInputStream(&input, str);
if (NS_OK != rv) {
delete str;
return rv;
}
rv = InitScanner(input, aBaseURL);
NS_RELEASE(input);
if (! NS_SUCCEEDED(rv)) {
return rv;
}
mSection = eCSSSection_General;
nsresult errorCode = NS_OK;
if (aClearOldDecl) {
mData.AssertInitialState();
aDeclaration->ClearData();
// We could check if it was already empty, but...
*aChanged = PR_TRUE;
} else {
aDeclaration->ExpandTo(&mData);
}
do {
if (!ParseDeclaration(errorCode, aDeclaration, PR_FALSE, aChanged)) {
NS_ASSERTION(errorCode != nsresult(-1), "-1 is no longer used for EOF");
rv = errorCode;
if (NS_FAILED(errorCode))
break;
if (!SkipDeclaration(errorCode, PR_FALSE)) {
NS_ASSERTION(errorCode != nsresult(-1), "-1 is no longer used for EOF");
rv = errorCode;
break;
}
}
} while (!aParseOnlyOneDecl);
aDeclaration->CompressFrom(&mData);
ReleaseScanner();
return rv;
}
NS_IMETHODIMP
CSSParserImpl::ParseRule(const nsAString& aRule,
nsIURI* aBaseURL,
nsISupportsArray** aResult)
{
NS_ASSERTION(nsnull != aBaseURL, "need base URL");
NS_ENSURE_ARG_POINTER(aResult);
nsString* str = new nsString(aRule);
if (nsnull == str) {
return NS_ERROR_OUT_OF_MEMORY;
}
nsCOMPtr<nsIUnicharInputStream> input = nsnull;
nsresult rv = NS_NewStringUnicharInputStream(getter_AddRefs(input), str);
if (NS_FAILED(rv)) {
delete str;
return rv;
}
rv = InitScanner(input, aBaseURL);
if (NS_FAILED(rv)) {
return rv;
}
rv = NS_NewISupportsArray(aResult);
if (NS_FAILED(rv)) {
ReleaseScanner();
return rv;
}
mSection = eCSSSection_Charset; // callers are responsible for rejecting invalid rules.
nsresult errorCode = NS_OK;
nsCSSToken* tk = &mToken;
// Get first non-whitespace token
if (!GetToken(errorCode, PR_TRUE)) {
REPORT_UNEXPECTED(
NS_LITERAL_STRING("Whitespace-only string given to be parsed as rule."));
OUTPUT_ERROR();
} else if (eCSSToken_AtKeyword == tk->mType) {
ParseAtRule(errorCode, AppendRuleToArray, *aResult);
}
else {
UngetToken();
ParseRuleSet(errorCode, AppendRuleToArray, *aResult);
}
OUTPUT_ERROR();
ReleaseScanner();
return NS_OK;
}
//XXXbz this function does not deal well with something like "foo
//!important" as the aPropValue. It will parse the "foo" and set it
//in the decl, then ignore the !important. It should either fail to
//parse this or do !important correctly....
NS_IMETHODIMP
CSSParserImpl::ParseProperty(const nsCSSProperty aPropID,
const nsAString& aPropValue,
nsIURI* aBaseURL,
nsCSSDeclaration* aDeclaration,
PRBool* aChanged)
{
NS_ASSERTION(nsnull != aBaseURL, "need base URL");
NS_ASSERTION(nsnull != aDeclaration, "Need declaration to parse into!");
*aChanged = PR_FALSE;
nsString* str = new nsAutoString(aPropValue);
if (!str) {
return NS_ERROR_OUT_OF_MEMORY;
}
nsCOMPtr<nsIUnicharInputStream> input;
nsresult rv = NS_NewStringUnicharInputStream(getter_AddRefs(input), str);
if (NS_FAILED(rv)) {
delete str;
return rv;
}
rv = InitScanner(input, aBaseURL);
if (NS_FAILED(rv)) {
return rv;
}
mSection = eCSSSection_General;
nsresult errorCode = NS_OK;
if (eCSSProperty_UNKNOWN == aPropID) { // unknown property
REPORT_UNEXPECTED(NS_LITERAL_STRING("Unknown property '") +
NS_ConvertASCIItoUTF16(nsCSSProps::GetStringValue(aPropID)) +
NS_LITERAL_STRING("'. Declaration dropped."));
OUTPUT_ERROR();
ReleaseScanner();
return NS_OK;
}
mData.AssertInitialState();
mTempData.AssertInitialState();
aDeclaration->ExpandTo(&mData);
nsresult result = NS_OK;
if (ParseProperty(errorCode, aPropID)) {
TransferTempData(aDeclaration, aPropID, PR_FALSE, aChanged);
} else {
REPORT_UNEXPECTED(
NS_LITERAL_STRING("Error in parsing value for property '") +
NS_ConvertASCIItoUTF16(nsCSSProps::GetStringValue(aPropID)) +
NS_LITERAL_STRING("'. Declaration dropped."));
OUTPUT_ERROR();
ClearTempData(aPropID);
NS_ASSERTION(errorCode != nsresult(-1), "-1 is no longer used for EOF");
result = errorCode;
}
CLEAR_ERROR();
aDeclaration->CompressFrom(&mData);
ReleaseScanner();
return result;
}
//----------------------------------------------------------------------
PRBool CSSParserImpl::GetToken(nsresult& aErrorCode, PRBool aSkipWS)
{
for (;;) {
if (!mHavePushBack) {
if (!mScanner->Next(aErrorCode, mToken)) {
break;
}
}
mHavePushBack = PR_FALSE;
if (aSkipWS && (eCSSToken_WhiteSpace == mToken.mType)) {
continue;
}
return PR_TRUE;
}
return PR_FALSE;
}
PRBool CSSParserImpl::GetURLToken(nsresult& aErrorCode, PRBool aSkipWS)
{
for (;;) {
if (! mHavePushBack) {
if (! mScanner->NextURL(aErrorCode, mToken)) {
break;
}
}
mHavePushBack = PR_FALSE;
if (aSkipWS && (eCSSToken_WhiteSpace == mToken.mType)) {
continue;
}
return PR_TRUE;
}
return PR_FALSE;
}
void CSSParserImpl::UngetToken()
{
NS_PRECONDITION(mHavePushBack == PR_FALSE, "double pushback");
mHavePushBack = PR_TRUE;
}
PRBool CSSParserImpl::ExpectSymbol(nsresult& aErrorCode,
PRUnichar aSymbol,
PRBool aSkipWS)
{
if (!GetToken(aErrorCode, aSkipWS)) {
return PR_FALSE;
}
if (mToken.IsSymbol(aSymbol)) {
return PR_TRUE;
}
UngetToken();
return PR_FALSE;
}
PRBool CSSParserImpl::ExpectEndProperty(nsresult& aErrorCode, PRBool aSkipWS)
{
if (!GetToken(aErrorCode, aSkipWS)) {
return PR_TRUE; // properties may end with eof
}
if ((eCSSToken_Symbol == mToken.mType) &&
((';' == 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 PR_TRUE;
}
REPORT_UNEXPECTED_TOKEN(
NS_LITERAL_STRING("Expected end of value for property but found"));
UngetToken();
return PR_FALSE;
}
nsString* CSSParserImpl::NextIdent(nsresult& aErrorCode)
{
// XXX Error reporting?
if (!GetToken(aErrorCode, PR_TRUE)) {
return nsnull;
}
if (eCSSToken_Ident != mToken.mType) {
UngetToken();
return nsnull;
}
return &mToken.mIdent;
}
PRBool CSSParserImpl::SkipAtRule(nsresult& aErrorCode)
{
for (;;) {
if (!GetToken(aErrorCode, PR_TRUE)) {
REPORT_UNEXPECTED_EOF(NS_LITERAL_STRING("end of unknown at-rule"));
return PR_FALSE;
}
if (eCSSToken_Symbol == mToken.mType) {
PRUnichar symbol = mToken.mSymbol;
if (symbol == ';') {
break;
}
if (symbol == '{') {
SkipUntil(aErrorCode, '}');
break;
} else if (symbol == '(') {
SkipUntil(aErrorCode, ')');
} else if (symbol == '[') {
SkipUntil(aErrorCode, ']');
}
}
}
return PR_TRUE;
}
PRBool CSSParserImpl::ParseAtRule(nsresult& aErrorCode, RuleAppendFunc aAppendFunc,
void* aData)
{
if ((mSection <= eCSSSection_Charset) &&
(mToken.mIdent.LowerCaseEqualsLiteral("charset"))) {
if (ParseCharsetRule(aErrorCode, aAppendFunc, aData)) {
mSection = eCSSSection_Import; // only one charset allowed
return PR_TRUE;
}
}
if ((mSection <= eCSSSection_Import) &&
mToken.mIdent.LowerCaseEqualsLiteral("import")) {
if (ParseImportRule(aErrorCode, aAppendFunc, aData)) {
mSection = eCSSSection_Import;
return PR_TRUE;
}
}
if ((mSection <= eCSSSection_NameSpace) &&
mToken.mIdent.LowerCaseEqualsLiteral("namespace")) {
if (ParseNameSpaceRule(aErrorCode, aAppendFunc, aData)) {
mSection = eCSSSection_NameSpace;
return PR_TRUE;
}
}
if (mToken.mIdent.LowerCaseEqualsLiteral("media")) {
if (ParseMediaRule(aErrorCode, aAppendFunc, aData)) {
mSection = eCSSSection_General;
return PR_TRUE;
}
}
if (mToken.mIdent.LowerCaseEqualsLiteral("font-face")) {
if (ParseFontFaceRule(aErrorCode, aAppendFunc, aData)) {
mSection = eCSSSection_General;
return PR_TRUE;
}
}
if (mToken.mIdent.LowerCaseEqualsLiteral("page")) {
if (ParsePageRule(aErrorCode, aAppendFunc, aData)) {
mSection = eCSSSection_General;
return PR_TRUE;
}
}
REPORT_UNEXPECTED_TOKEN(
NS_LITERAL_STRING("Unrecognized at-rule or error parsing at-rule"));
OUTPUT_ERROR();
// Skip over unsupported at rule, don't advance section
return SkipAtRule(aErrorCode);
}
PRBool CSSParserImpl::ParseCharsetRule(nsresult& aErrorCode, RuleAppendFunc aAppendFunc,
void* aData)
{
if (!GetToken(aErrorCode, PR_TRUE)) {
REPORT_UNEXPECTED_EOF(NS_LITERAL_STRING("charset string in @charset rule"));
return PR_FALSE;
}
if (eCSSToken_String != mToken.mType) {
REPORT_UNEXPECTED_TOKEN(
NS_LITERAL_STRING("Expected charset string but found"));
return PR_FALSE;
}
nsAutoString charset = mToken.mIdent;
if (!ExpectSymbol(aErrorCode, ';', PR_TRUE)) {
return PR_FALSE;
}
nsCOMPtr<nsICSSRule> rule;
NS_NewCSSCharsetRule(getter_AddRefs(rule), charset);
if (rule) {
(*aAppendFunc)(rule, aData);
}
return PR_TRUE;
}
PRBool CSSParserImpl::GatherMedia(nsresult& aErrorCode,
nsISupportsArray* aMediaAtoms)
{
PRBool expectIdent = PR_TRUE;
for (;;) {
if (!GetToken(aErrorCode, PR_TRUE)) {
REPORT_UNEXPECTED_EOF(
NS_LITERAL_STRING("end of media list in @import or @media rule"));
break;
}
if (eCSSToken_Symbol == mToken.mType) {
PRUnichar symbol = mToken.mSymbol;
if ((';' == symbol) || ('{' == symbol)) {
UngetToken();
return PR_TRUE;
} else if (',' != symbol) {
REPORT_UNEXPECTED_TOKEN(
NS_LITERAL_STRING("Expected ',' in media list but found"));
UngetToken();
break;
} else if (expectIdent) {
REPORT_UNEXPECTED_TOKEN(
NS_LITERAL_STRING("Expected identifier in media list but found"));
UngetToken();
break;
}
else {
expectIdent = PR_TRUE;
}
}
else if (eCSSToken_Ident == mToken.mType) {
if (expectIdent) {
ToLowerCase(mToken.mIdent); // case insensitive from CSS - must be lower cased
nsCOMPtr<nsIAtom> medium = do_GetAtom(mToken.mIdent);
aMediaAtoms->AppendElement(medium);
expectIdent = PR_FALSE;
}
else {
REPORT_UNEXPECTED_TOKEN(
NS_LITERAL_STRING("Expected ',' in media list but found"));
UngetToken();
break;
}
}
else {
REPORT_UNEXPECTED_TOKEN(
expectIdent
? NS_LITERAL_STRING("Expected identifier in media list but found")
: NS_LITERAL_STRING("Expected ',' in media list but found"));
UngetToken();
break;
}
}
aMediaAtoms->Clear();
return PR_FALSE;
}
// Parse a CSS2 import rule: "@import STRING | URL [medium [, mdeium]]"
PRBool CSSParserImpl::ParseImportRule(nsresult& aErrorCode, RuleAppendFunc aAppendFunc, void* aData)
{
if (!GetToken(aErrorCode, PR_TRUE)) {
REPORT_UNEXPECTED_EOF(NS_LITERAL_STRING("URI in @import rule"));
return PR_FALSE;
}
nsAutoString url;
nsCOMPtr<nsISupportsArray> media;
aErrorCode = NS_NewISupportsArray(getter_AddRefs(media));
if (!media) {
// Out of memory
return PR_FALSE;
}
if (eCSSToken_String == mToken.mType) {
url = mToken.mIdent;
if (GatherMedia(aErrorCode, media)) {
if (ExpectSymbol(aErrorCode, ';', PR_TRUE)) {
ProcessImport(aErrorCode, url, media, aAppendFunc, aData);
return PR_TRUE;
}
}
}
else if ((eCSSToken_Function == mToken.mType) &&
(mToken.mIdent.LowerCaseEqualsLiteral("url"))) {
if (ExpectSymbol(aErrorCode, '(', PR_FALSE)) {
if (GetURLToken(aErrorCode, PR_TRUE)) {
if ((eCSSToken_String == mToken.mType) || (eCSSToken_URL == mToken.mType)) {
url = mToken.mIdent;
if (ExpectSymbol(aErrorCode, ')', PR_TRUE)) {
if (GatherMedia(aErrorCode, media)) {
if (ExpectSymbol(aErrorCode, ';', PR_TRUE)) {
ProcessImport(aErrorCode, url, media, aAppendFunc, aData);
return PR_TRUE;
}
}
}
}
}
}
}
REPORT_UNEXPECTED_TOKEN(
NS_LITERAL_STRING("Unexpected token within @import:"));
// don't advance section, simply ignore invalid @import
return PR_FALSE;
}
PRBool CSSParserImpl::ProcessImport(nsresult& aErrorCode,
const nsString& aURLSpec,
nsISupportsArray* aMedia,
RuleAppendFunc aAppendFunc,
void* aData)
{
nsCOMPtr<nsICSSImportRule> rule;
aErrorCode = NS_NewCSSImportRule(getter_AddRefs(rule), aURLSpec, aMedia);
if (NS_FAILED(aErrorCode)) {
return PR_FALSE;
}
(*aAppendFunc)(rule, aData);
if (mChildLoader) {
nsCOMPtr<nsIURI> url;
// XXX should pass a charset!
aErrorCode = NS_NewURI(getter_AddRefs(url), aURLSpec, nsnull, mURL);
if (NS_FAILED(aErrorCode)) {
// import url is bad
// XXX log this somewhere for easier web page debugging
return PR_FALSE;
}
mChildLoader->LoadChildSheet(mSheet, url, aMedia, rule);
}
return PR_TRUE;
}
// Parse a CSS2 media rule: "@media medium [, medium] { ... }"
PRBool CSSParserImpl::ParseMediaRule(nsresult& aErrorCode, RuleAppendFunc aAppendFunc,
void* aData)
{
nsCOMPtr<nsISupportsArray> media;
aErrorCode = NS_NewISupportsArray(getter_AddRefs(media));
if (media) {
if (GatherMedia(aErrorCode, media)) {
// XXXbz this could use better error reporting throughout the method
PRUint32 count;
media->Count(&count);
if (count > 0 &&
ExpectSymbol(aErrorCode, '{', PR_TRUE)) {
// push media rule on stack, loop over children
nsCOMPtr<nsICSSMediaRule> rule;
NS_NewCSSMediaRule(getter_AddRefs(rule));
if (rule) {
if (PushGroup(rule)) {
nsCSSSection holdSection = mSection;
mSection = eCSSSection_General;
for (;;) {
// Get next non-whitespace token
if (! GetToken(aErrorCode, PR_TRUE)) {
REPORT_UNEXPECTED_EOF(NS_LITERAL_STRING("end of @media rule"));
break;
}
if (mToken.IsSymbol('}')) { // done!
UngetToken();
break;
}
if (eCSSToken_AtKeyword == mToken.mType) {
SkipAtRule(aErrorCode); // @media cannot contain @rules
continue;
}
UngetToken();
ParseRuleSet(aErrorCode, AppendRuleToSheet, this);
}
PopGroup();
if (ExpectSymbol(aErrorCode, '}', PR_TRUE)) {
// Append first, so when we do SetMedia() the rule
// knows what its stylesheet is.
(*aAppendFunc)(rule, aData);
rule->SetMedia(media);
return PR_TRUE;
}
mSection = holdSection;
}
}
else { // failed to create rule, backup and skip block
UngetToken();
}
}
}
}
return PR_FALSE;
}
// Parse a CSS3 namespace rule: "@namespace [prefix] STRING | URL;"
PRBool CSSParserImpl::ParseNameSpaceRule(nsresult& aErrorCode,
RuleAppendFunc aAppendFunc,
void* aData)
{
if (!GetToken(aErrorCode, PR_TRUE)) {
REPORT_UNEXPECTED_EOF(
NS_LITERAL_STRING("namespace prefix in @namespace rule"));
return PR_FALSE;
}
nsAutoString prefix;
nsAutoString url;
if (eCSSToken_Ident == mToken.mType) {
prefix = mToken.mIdent;
ToLowerCase(prefix); // always case insensitive, since stays within CSS
if (! GetToken(aErrorCode, PR_TRUE)) {
REPORT_UNEXPECTED_EOF(
NS_LITERAL_STRING("namespace URI in @namespace rule"));
return PR_FALSE;
}
}
if (eCSSToken_String == mToken.mType) {
url = mToken.mIdent;
if (ExpectSymbol(aErrorCode, ';', PR_TRUE)) {
ProcessNameSpace(aErrorCode, prefix, url, aAppendFunc, aData);
return PR_TRUE;
}
}
else if ((eCSSToken_Function == mToken.mType) &&
(mToken.mIdent.LowerCaseEqualsLiteral("url"))) {
if (ExpectSymbol(aErrorCode, '(', PR_FALSE)) {
if (GetURLToken(aErrorCode, PR_TRUE)) {
if ((eCSSToken_String == mToken.mType) || (eCSSToken_URL == mToken.mType)) {
url = mToken.mIdent;
if (ExpectSymbol(aErrorCode, ')', PR_TRUE)) {
if (ExpectSymbol(aErrorCode, ';', PR_TRUE)) {
ProcessNameSpace(aErrorCode, prefix, url, aAppendFunc, aData);
return PR_TRUE;
}
}
}
}
}
}
REPORT_UNEXPECTED_TOKEN(
NS_LITERAL_STRING("Unexpected token within @namespace:"));
return PR_FALSE;
}
PRBool CSSParserImpl::ProcessNameSpace(nsresult& aErrorCode, const nsString& aPrefix,
const nsString& aURLSpec, RuleAppendFunc aAppendFunc,
void* aData)
{
PRBool result = PR_FALSE;
nsCOMPtr<nsICSSNameSpaceRule> rule;
nsCOMPtr<nsIAtom> prefix;
if (!aPrefix.IsEmpty()) {
prefix = do_GetAtom(aPrefix);
}
NS_NewCSSNameSpaceRule(getter_AddRefs(rule), prefix, aURLSpec);
if (rule) {
(*aAppendFunc)(rule, aData);
mSheet->GetNameSpace(*getter_AddRefs(mNameSpace));
}
return result;
}
PRBool CSSParserImpl::ParseFontFaceRule(nsresult& aErrorCode, RuleAppendFunc aAppendFunc, void* aData)
{
// XXX not yet implemented
return PR_FALSE;
}
PRBool CSSParserImpl::ParsePageRule(nsresult& aErrorCode, RuleAppendFunc aAppendFunc, void* aData)
{
// XXX not yet implemented
return PR_FALSE;
}
void CSSParserImpl::SkipUntil(nsresult& aErrorCode, PRUnichar aStopSymbol)
{
nsCSSToken* tk = &mToken;
for (;;) {
if (!GetToken(aErrorCode, PR_TRUE)) {
break;
}
if (eCSSToken_Symbol == tk->mType) {
PRUnichar symbol = tk->mSymbol;
if (symbol == aStopSymbol) {
break;
} else if ('{' == symbol) {
SkipUntil(aErrorCode, '}');
} else if ('[' == symbol) {
SkipUntil(aErrorCode, ']');
} else if ('(' == symbol) {
SkipUntil(aErrorCode, ')');
}
}
}
}
PRBool
CSSParserImpl::SkipDeclaration(nsresult& aErrorCode, PRBool aCheckForBraces)
{
nsCSSToken* tk = &mToken;
for (;;) {
if (!GetToken(aErrorCode, PR_TRUE)) {
if (aCheckForBraces) {
REPORT_UNEXPECTED_EOF(
NS_LITERAL_STRING("closing } of declaration block"));
}
return PR_FALSE;
}
if (eCSSToken_Symbol == tk->mType) {
PRUnichar symbol = tk->mSymbol;
if (';' == symbol) {
break;
}
if (aCheckForBraces) {
if ('}' == symbol) {
UngetToken();
break;
}
}
if ('{' == symbol) {
SkipUntil(aErrorCode, '}');
} else if ('(' == symbol) {
SkipUntil(aErrorCode, ')');
} else if ('[' == symbol) {
SkipUntil(aErrorCode, ']');
}
}
}
return PR_TRUE;
}
void CSSParserImpl::SkipRuleSet(nsresult& aErrorCode)
{
nsCSSToken* tk = &mToken;
for (;;) {
if (!GetToken(aErrorCode, PR_TRUE)) {
REPORT_UNEXPECTED_EOF(NS_LITERAL_STRING("closing } of invalid rule set"));
break;
}
if (eCSSToken_Symbol == tk->mType) {
PRUnichar symbol = tk->mSymbol;
if ('{' == symbol) {
SkipUntil(aErrorCode, '}');
break;
}
if ('(' == symbol) {
SkipUntil(aErrorCode, ')');
} else if ('[' == symbol) {
SkipUntil(aErrorCode, ']');
}
}
}
}
PRBool CSSParserImpl::PushGroup(nsICSSGroupRule* aRule)
{
if (mGroupStack.AppendObject(aRule))
return PR_TRUE;
return PR_FALSE;
}
void CSSParserImpl::PopGroup(void)
{
PRInt32 count = mGroupStack.Count();
if (0 < count) {
mGroupStack.RemoveObjectAt(count - 1);
}
}
void CSSParserImpl::AppendRule(nsICSSRule* aRule)
{
PRInt32 count = mGroupStack.Count();
if (0 < count) {
mGroupStack[count - 1]->AppendStyleRule(aRule);
}
else {
mSheet->AppendStyleRule(aRule);
}
}
PRBool CSSParserImpl::ParseRuleSet(nsresult& aErrorCode, RuleAppendFunc aAppendFunc, void* aData)
{
// First get the list of selectors for the rule
nsCSSSelectorList* slist = nsnull;
PRUint32 linenum = mScanner->GetLineNumber();
if (! ParseSelectorList(aErrorCode, slist)) {
REPORT_UNEXPECTED(
NS_LITERAL_STRING("Ruleset ignored due to bad selector."));
OUTPUT_ERROR();
SkipRuleSet(aErrorCode);
return PR_FALSE;
}
NS_ASSERTION(nsnull != slist, "null selector list");
CLEAR_ERROR();
// Next parse the declaration block
nsCSSDeclaration* declaration = ParseDeclarationBlock(aErrorCode, PR_TRUE);
if (nsnull == declaration) {
// XXX skip something here
delete slist;
return PR_FALSE;
}
#if 0
slist->Dump();
fputs("{\n", stdout);
declaration->List();
fputs("}\n", stdout);
#endif
// Translate the selector list and declaration block into style data
nsCOMPtr<nsICSSStyleRule> rule;
NS_NewCSSStyleRule(getter_AddRefs(rule), slist, declaration);
if (!rule) {
aErrorCode = NS_ERROR_OUT_OF_MEMORY;
delete slist;
return PR_FALSE;
}
rule->SetLineNumber(linenum);
(*aAppendFunc)(rule, aData);
return PR_TRUE;
}
PRBool CSSParserImpl::ParseSelectorList(nsresult& aErrorCode,
nsCSSSelectorList*& aListHead)
{
nsCSSSelectorList* list = nsnull;
if (! ParseSelectorGroup(aErrorCode, list)) {
// must have at least one selector group
aListHead = nsnull;
return PR_FALSE;
}
NS_ASSERTION(nsnull != list, "no selector list");
aListHead = list;
// After that there must either be a "," or a "{"
nsCSSToken* tk = &mToken;
for (;;) {
if (! GetToken(aErrorCode, PR_TRUE)) {
REPORT_UNEXPECTED_EOF(NS_LITERAL_STRING("',' or '{'"));
break;
}
if (eCSSToken_Symbol == tk->mType) {
if (',' == tk->mSymbol) {
nsCSSSelectorList* newList = nsnull;
// Another selector group must follow
if (! ParseSelectorGroup(aErrorCode, newList)) {
break;
}
// add new list to the end of the selector list
list->mNext = newList;
list = newList;
continue;
} else if ('{' == tk->mSymbol) {
UngetToken();
return PR_TRUE;
}
}
REPORT_UNEXPECTED_TOKEN(NS_LITERAL_STRING("Expected ',' or '{' but found"));
UngetToken();
break;
}
delete aListHead;
aListHead = nsnull;
return PR_FALSE;
}
static PRBool IsSinglePseudoClass(const nsCSSSelector& aSelector)
{
return PRBool((aSelector.mNameSpace == kNameSpaceID_Unknown) &&
(aSelector.mTag == nsnull) &&
(aSelector.mIDList == nsnull) &&
(aSelector.mClassList == nsnull) &&
(aSelector.mAttrList == nsnull) &&
(aSelector.mNegations == nsnull) &&
(aSelector.mPseudoClassList != nsnull) &&
(aSelector.mPseudoClassList->mNext == nsnull));
}
#ifdef MOZ_XUL
static PRBool IsTreePseudoElement(nsIAtom* aPseudo)
{
const char* str;
aPseudo->GetUTF8String(&str);
static const char moz_tree[] = ":-moz-tree-";
return nsCRT::strncmp(str, moz_tree, PRInt32(sizeof(moz_tree)-1)) == 0;
}
#endif
PRBool CSSParserImpl::ParseSelectorGroup(nsresult& aErrorCode,
nsCSSSelectorList*& aList)
{
nsCSSSelectorList* list = nsnull;
PRUnichar combinator = PRUnichar(0);
PRInt32 weight = 0;
PRBool havePseudoElement = PR_FALSE;
PRBool done = PR_FALSE;
while (!done) {
nsCSSSelector selector;
if (! ParseSelector(aErrorCode, selector)) {
break;
}
if (nsnull == list) {
list = new nsCSSSelectorList();
if (nsnull == list) {
aErrorCode = NS_ERROR_OUT_OF_MEMORY;
return PR_FALSE;
}
}
list->AddSelector(selector);
nsCSSSelector* listSel = list->mSelectors;
// pull out pseudo elements here
nsAtomStringList* prevList = nsnull;
nsAtomStringList* pseudoClassList = listSel->mPseudoClassList;
while (nsnull != pseudoClassList) {
if (! nsCSSPseudoClasses::IsPseudoClass(pseudoClassList->mAtom)) {
havePseudoElement = PR_TRUE;
if (IsSinglePseudoClass(*listSel)) { // convert to pseudo element selector
nsIAtom* pseudoElement = pseudoClassList->mAtom; // steal ref count
pseudoClassList->mAtom = nsnull;
listSel->Reset();
if (listSel->mNext) {// more to the selector
listSel->mOperator = PRUnichar('>');
nsCSSSelector empty;
list->AddSelector(empty); // leave a blank (universal) selector in the middle
listSel = list->mSelectors; // use the new one for the pseudo
}
listSel->mTag = pseudoElement;
}
else { // append new pseudo element selector
selector.Reset();
selector.mTag = pseudoClassList->mAtom; // steal ref count
#ifdef MOZ_XUL
if (IsTreePseudoElement(selector.mTag)) {
// Take the remaining "pseudoclasses" that we parsed
// inside the tree pseudoelement's ()-list, and
// make our new selector have these pseudoclasses
// in its pseudoclass list.
selector.mPseudoClassList = pseudoClassList->mNext;
pseudoClassList->mNext = nsnull;
}
#endif
list->AddSelector(selector);
pseudoClassList->mAtom = nsnull;
listSel->mOperator = PRUnichar('>');
if (nsnull == prevList) { // delete list entry
listSel->mPseudoClassList = pseudoClassList->mNext;
}
else {
prevList->mNext = pseudoClassList->mNext;
}
pseudoClassList->mNext = nsnull;
delete pseudoClassList;
weight += listSel->CalcWeight(); // capture weight from remainder
}
break; // only one pseudo element per selector
}
prevList = pseudoClassList;
pseudoClassList = pseudoClassList->mNext;
}
combinator = PRUnichar(0);
if (!GetToken(aErrorCode, PR_FALSE)) {
break;
}
// Assume we are done unless we find a combinator here.
done = PR_TRUE;
if (eCSSToken_WhiteSpace == mToken.mType) {
if (!GetToken(aErrorCode, PR_TRUE)) {
break;
}
done = PR_FALSE;
}
if (eCSSToken_Symbol == mToken.mType &&
('+' == mToken.mSymbol ||
'>' == mToken.mSymbol ||
'~' == mToken.mSymbol)) {
done = PR_FALSE;
combinator = mToken.mSymbol;
list->mSelectors->SetOperator(combinator);
}
else {
UngetToken(); // give it back to selector
}
if (havePseudoElement) {
break;
}
else {
weight += selector.CalcWeight();
}
}
if (!list) {
REPORT_UNEXPECTED(NS_LITERAL_STRING("Selector expected."));
}
if (PRUnichar(0) != combinator) { // no dangling combinators
if (list) {
delete list;
}
list = nsnull;
// This should report the problematic combinator
REPORT_UNEXPECTED(NS_LITERAL_STRING("Dangling combinator."));
}
aList = list;
if (nsnull != list) {
list->mWeight = weight;
}
return PRBool(nsnull != aList);
}
#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
#define SELECTOR_PARSING_ENDED_OK 1
#define SELECTOR_PARSING_STOPPED_OK 2
#define SELECTOR_PARSING_STOPPED_ERROR 3
//
// Parses an ID selector #name
//
void CSSParserImpl::ParseIDSelector(PRInt32& aDataMask,
nsCSSSelector& aSelector,
PRInt32& aParsingStatus,
nsresult& aErrorCode)
{
if (!mToken.mIdent.IsEmpty()) { // verify is legal ID
PRUnichar first = mToken.mIdent.First();
PRUnichar second = 0;
if (mToken.mIdent.Length() >= 2) {
second = mToken.mIdent.CharAt(1);
}
if (!nsCSSScanner::StartsIdent(first, second,
nsCSSScanner::GetLexTable())) {
REPORT_UNEXPECTED_TOKEN(NS_LITERAL_STRING(
"Expected identifier for ID selector but found"));
UngetToken();
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
aDataMask |= SEL_MASK_ID;
aSelector.AddID(mToken.mIdent);
}
else {
REPORT_UNEXPECTED_TOKEN(NS_LITERAL_STRING(
"Expected non-empty name for ID selector, but found"));
UngetToken();
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
aParsingStatus = SELECTOR_PARSING_ENDED_OK;
}
//
// Parses a class selector .name
//
void CSSParserImpl::ParseClassSelector(PRInt32& aDataMask,
nsCSSSelector& aSelector,
PRInt32& aParsingStatus,
nsresult& aErrorCode)
{
if (! GetToken(aErrorCode, PR_FALSE)) { // get ident
REPORT_UNEXPECTED_EOF(NS_LITERAL_STRING("class name"));
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
if (eCSSToken_Ident != mToken.mType) { // malformed selector
REPORT_UNEXPECTED_TOKEN(NS_LITERAL_STRING("Expected identifier for class selector but found"));
UngetToken();
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
aDataMask |= SEL_MASK_CLASS;
aSelector.AddClass(mToken.mIdent);
aParsingStatus = SELECTOR_PARSING_ENDED_OK;
}
//
// Parse a type element selector or a universal selector
// namespace|type or namespace|* or *|* or *
//
void CSSParserImpl::ParseTypeOrUniversalSelector(PRInt32& aDataMask,
nsCSSSelector& aSelector,
PRInt32& aParsingStatus,
nsresult& aErrorCode,
PRBool aIsNegated)
{
nsAutoString buffer;
if (mToken.IsSymbol('*')) { // universal element selector, or universal namespace
if (ExpectSymbol(aErrorCode, '|', PR_FALSE)) { // was namespace
aDataMask |= SEL_MASK_NSPACE;
aSelector.SetNameSpace(kNameSpaceID_Unknown); // namespace wildcard
if (! GetToken(aErrorCode, PR_FALSE)) {
REPORT_UNEXPECTED_EOF(NS_LITERAL_STRING("element type"));
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
if (eCSSToken_Ident == mToken.mType) { // element name
aDataMask |= SEL_MASK_ELEM;
if (mCaseSensitive) {
aSelector.SetTag(mToken.mIdent);
}
else {
ToLowerCase(mToken.mIdent, buffer);
aSelector.SetTag(buffer);
}
}
else if (mToken.IsSymbol('*')) { // universal selector
aDataMask |= SEL_MASK_ELEM;
// don't set tag
}
else {
REPORT_UNEXPECTED_TOKEN(
NS_LITERAL_STRING("Expected element name or '*' but found"));
UngetToken();
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
}
else { // was universal element selector
aSelector.SetNameSpace(kNameSpaceID_Unknown); // wildcard
if (mNameSpace) { // look for default namespace
nsCOMPtr<nsINameSpace> defaultNameSpace;
mNameSpace->FindNameSpace(nsnull, getter_AddRefs(defaultNameSpace));
if (defaultNameSpace) {
PRInt32 defaultID;
defaultNameSpace->GetNameSpaceID(&defaultID);
aSelector.SetNameSpace(defaultID);
}
}
aDataMask |= SEL_MASK_ELEM;
// don't set any tag in the selector
}
if (! GetToken(aErrorCode, PR_FALSE)) { // premature eof is ok (here!)
aParsingStatus = SELECTOR_PARSING_STOPPED_OK;
return;
}
}
else if (eCSSToken_Ident == mToken.mType) { // element name or namespace name
buffer = mToken.mIdent; // hang on to ident
if (ExpectSymbol(aErrorCode, '|', PR_FALSE)) { // was namespace
aDataMask |= SEL_MASK_NSPACE;
PRInt32 nameSpaceID = kNameSpaceID_Unknown;
if (mNameSpace) {
ToLowerCase(buffer); // always case insensitive, since stays within CSS
nsCOMPtr<nsIAtom> prefix = do_GetAtom(buffer);
mNameSpace->FindNameSpaceID(prefix, &nameSpaceID);
} // else, no declared namespaces
if (kNameSpaceID_Unknown == nameSpaceID) { // unknown prefix, dump it
REPORT_UNEXPECTED(NS_LITERAL_STRING("Unknown namespace prefix '") +
buffer + NS_LITERAL_STRING("'."));
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
aSelector.SetNameSpace(nameSpaceID);
if (! GetToken(aErrorCode, PR_FALSE)) {
REPORT_UNEXPECTED_EOF(NS_LITERAL_STRING("element type"));
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
if (eCSSToken_Ident == mToken.mType) { // element name
aDataMask |= SEL_MASK_ELEM;
if (mCaseSensitive) {
aSelector.SetTag(mToken.mIdent);
}
else {
ToLowerCase(mToken.mIdent, buffer);
aSelector.SetTag(buffer);
}
}
else if (mToken.IsSymbol('*')) { // universal selector
aDataMask |= SEL_MASK_ELEM;
// don't set tag
}
else {
REPORT_UNEXPECTED_TOKEN(
NS_LITERAL_STRING("Expected element name or '*' but found"));
UngetToken();
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
}
else { // was element name
aSelector.SetNameSpace(kNameSpaceID_Unknown); // wildcard
if (mNameSpace) { // look for default namespace
nsCOMPtr<nsINameSpace> defaultNameSpace;
mNameSpace->FindNameSpace(nsnull, getter_AddRefs(defaultNameSpace));
if (defaultNameSpace) {
PRInt32 defaultID;
defaultNameSpace->GetNameSpaceID(&defaultID);
aSelector.SetNameSpace(defaultID);
}
}
if (mCaseSensitive) {
aSelector.SetTag(buffer);
}
else {
ToLowerCase(buffer);
aSelector.SetTag(buffer);
}
aDataMask |= SEL_MASK_ELEM;
}
if (! GetToken(aErrorCode, PR_FALSE)) { // premature eof is ok (here!)
aParsingStatus = SELECTOR_PARSING_STOPPED_OK;
return;
}
}
else if (mToken.IsSymbol('|')) { // No namespace
aDataMask |= SEL_MASK_NSPACE;
aSelector.SetNameSpace(kNameSpaceID_None); // explicit NO namespace
// get mandatory tag
if (! GetToken(aErrorCode, PR_FALSE)) {
REPORT_UNEXPECTED_EOF(NS_LITERAL_STRING("element type"));
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
if (eCSSToken_Ident == mToken.mType) { // element name
aDataMask |= SEL_MASK_ELEM;
if (mCaseSensitive) {
aSelector.SetTag(mToken.mIdent);
}
else {
ToLowerCase(mToken.mIdent, buffer);
aSelector.SetTag(buffer);
}
}
else if (mToken.IsSymbol('*')) { // universal selector
aDataMask |= SEL_MASK_ELEM;
// don't set tag
}
else {
REPORT_UNEXPECTED_TOKEN(
NS_LITERAL_STRING("Expected element name or '*' but found"));
UngetToken();
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
if (! GetToken(aErrorCode, PR_FALSE)) { // premature eof is ok (here!)
aParsingStatus = SELECTOR_PARSING_STOPPED_OK;
return;
}
}
else {
// no tag or namespace: implied universal selector
// set namespace to unknown since it is not specified
aSelector.SetNameSpace(kNameSpaceID_Unknown); // wildcard
if (mNameSpace) { // look for default namespace
nsCOMPtr<nsINameSpace> defaultNameSpace;
mNameSpace->FindNameSpace(nsnull, getter_AddRefs(defaultNameSpace));
if (defaultNameSpace) {
PRInt32 defaultID;
defaultNameSpace->GetNameSpaceID(&defaultID);
aSelector.SetNameSpace(defaultID);
}
}
}
aParsingStatus = SELECTOR_PARSING_ENDED_OK;
if (aIsNegated) {
// restore last token read in case of a negated type selector
UngetToken();
}
}
//
// Parse attribute selectors [attr], [attr=value], [attr|=value],
// [attr~=value], [attr^=value], [attr$=value] and [attr*=value]
//
void CSSParserImpl::ParseAttributeSelector(PRInt32& aDataMask,
nsCSSSelector& aSelector,
PRInt32& aParsingStatus,
nsresult& aErrorCode)
{
if (! GetToken(aErrorCode, PR_TRUE)) { // premature EOF
REPORT_UNEXPECTED_EOF(NS_LITERAL_STRING("attribute name"));
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
PRInt32 nameSpaceID = kNameSpaceID_None;
nsAutoString attr;
if (mToken.IsSymbol('*')) { // wildcard namespace
nameSpaceID = kNameSpaceID_Unknown;
if (ExpectSymbol(aErrorCode, '|', PR_FALSE)) {
if (! GetToken(aErrorCode, PR_FALSE)) { // premature EOF
REPORT_UNEXPECTED_EOF(NS_LITERAL_STRING("attribute name"));
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
if (eCSSToken_Ident == mToken.mType) { // attr name
attr = mToken.mIdent;
}
else {
REPORT_UNEXPECTED_TOKEN(NS_LITERAL_STRING("Expected identifier for attribute name but found"));
UngetToken();
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
}
else {
REPORT_UNEXPECTED_TOKEN(
NS_LITERAL_STRING("Expected '|' but found"));
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
}
else if (mToken.IsSymbol('|')) { // NO namespace
if (! GetToken(aErrorCode, PR_FALSE)) { // premature EOF
REPORT_UNEXPECTED_EOF(NS_LITERAL_STRING("attribute name"));
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
if (eCSSToken_Ident == mToken.mType) { // attr name
attr = mToken.mIdent;
}
else {
REPORT_UNEXPECTED_TOKEN(NS_LITERAL_STRING("Expected identifier for attribute name but found"));
UngetToken();
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
}
else if (eCSSToken_Ident == mToken.mType) { // attr name or namespace
attr = mToken.mIdent; // hang on to it
if (ExpectSymbol(aErrorCode, '|', PR_FALSE)) { // was a namespace
nameSpaceID = kNameSpaceID_Unknown;
if (mNameSpace) {
ToLowerCase(attr); // always case insensitive, since stays within CSS
nsCOMPtr<nsIAtom> prefix = do_GetAtom(attr);
mNameSpace->FindNameSpaceID(prefix, &nameSpaceID);
} // else, no declared namespaces
if (kNameSpaceID_Unknown == nameSpaceID) { // unknown prefix, dump it
REPORT_UNEXPECTED(NS_LITERAL_STRING("Unknown namespace prefix '") +
attr + NS_LITERAL_STRING("'."));
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
if (! GetToken(aErrorCode, PR_FALSE)) { // premature EOF
REPORT_UNEXPECTED_EOF(NS_LITERAL_STRING("attribute name"));
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
if (eCSSToken_Ident == mToken.mType) { // attr name
attr = mToken.mIdent;
}
else {
REPORT_UNEXPECTED_TOKEN(NS_LITERAL_STRING("Expected identifier for attribute name but found"));
UngetToken();
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
}
}
else { // malformed
REPORT_UNEXPECTED_TOKEN(
NS_LITERAL_STRING("Expected attribute name or namespace but found"));
UngetToken();
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
if (! mCaseSensitive) {
ToLowerCase(attr);
}
if (! GetToken(aErrorCode, PR_TRUE)) { // premature EOF
REPORT_UNEXPECTED_EOF(NS_LITERAL_STRING("part of attribute selector"));
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
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)) {
PRUint8 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(
NS_LITERAL_STRING("Unexpected token in attribute selector: "));
UngetToken(); // bad function
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
if (NS_ATTR_FUNC_SET != func) { // get value
if (! GetToken(aErrorCode, PR_TRUE)) { // premature EOF
REPORT_UNEXPECTED_EOF(NS_LITERAL_STRING("attribute value"));
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
if ((eCSSToken_Ident == mToken.mType) || (eCSSToken_String == mToken.mType)) {
nsAutoString value(mToken.mIdent);
if (! GetToken(aErrorCode, PR_TRUE)) { // premature EOF
REPORT_UNEXPECTED_EOF(
NS_LITERAL_STRING("] to end attribute selector"));
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
if (mToken.IsSymbol(']')) {
PRBool isCaseSensitive = mCaseSensitive;
if (nameSpaceID == kNameSpaceID_None ||
nameSpaceID == kNameSpaceID_XHTML) {
static const char* caseSensitiveHTMLAttribute[] = {
// list based on http://www.w3.org/TR/REC-html40/index/attributes.html
"abbr", "alt", "label",
"prompt", "standby", "summary",
"title", "class", "archive",
"cite", "datetime", "href",
"name", nsnull
};
short i = 0;
const char* htmlAttr;
while ((htmlAttr = caseSensitiveHTMLAttribute[i++])) {
if (attr.EqualsIgnoreCase(htmlAttr)) {
isCaseSensitive = PR_TRUE;
break;
}
}
}
aDataMask |= SEL_MASK_ATTRIB;
aSelector.AddAttribute(nameSpaceID, attr, func, value, isCaseSensitive);
}
else {
REPORT_UNEXPECTED_TOKEN(NS_LITERAL_STRING("Expected ']' to terminate attribute selector but found"));
UngetToken();
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
}
else {
REPORT_UNEXPECTED_TOKEN(NS_LITERAL_STRING("Expected identifier or string for value in attribute selector but found"));
UngetToken();
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
}
}
else {
REPORT_UNEXPECTED_TOKEN(
NS_LITERAL_STRING("Unexpected token in attribute selector: "));
UngetToken(); // bad dog, no biscut!
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
aParsingStatus = SELECTOR_PARSING_ENDED_OK;
}
//
// Parse pseudo-classes and pseudo-elements
//
void CSSParserImpl::ParsePseudoSelector(PRInt32& aDataMask,
nsCSSSelector& aSelector,
PRInt32& aParsingStatus,
nsresult& aErrorCode,
PRBool aIsNegated)
{
if (! GetToken(aErrorCode, PR_FALSE)) { // premature eof
REPORT_UNEXPECTED_EOF(NS_LITERAL_STRING("name of pseudo-class or pseudo-element"));
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
// First, find out whether we are parsing a CSS3 pseudo-element
PRBool parsingPseudoElement = PR_FALSE;
if (mToken.IsSymbol(':')) {
parsingPseudoElement = PR_TRUE;
if (! GetToken(aErrorCode, PR_FALSE)) { // premature eof
REPORT_UNEXPECTED_EOF(NS_LITERAL_STRING("name of pseudo-class or pseudo-element"));
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
}
// Do some sanity-checking on the token
if (eCSSToken_Ident != mToken.mType && eCSSToken_Function != mToken.mType) {
// malformed selector
REPORT_UNEXPECTED_TOKEN(NS_LITERAL_STRING("Expected identifier for pseudo-class or pseudo-element but found"));
UngetToken();
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
// 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(PRUnichar(':'));
buffer.Append(mToken.mIdent);
ToLowerCase(buffer);
nsCOMPtr<nsIAtom> pseudo = do_GetAtom(buffer);
// stash away some info about this pseudo so we only have to get it once.
#ifdef MOZ_XUL
// 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.
PRBool isTree = (eCSSToken_Function == mToken.mType) &&
IsTreePseudoElement(pseudo);
#endif
PRBool isPseudoElement = nsCSSPseudoElements::IsPseudoElement(pseudo);
PRBool isAnonBox = nsCSSAnonBoxes::IsAnonBox(pseudo);
// 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::notPseudo == pseudo ||
nsCSSPseudoClasses::lang == pseudo)) { // There are no other function pseudos
REPORT_UNEXPECTED_TOKEN(NS_LITERAL_STRING("Function token for non-function pseudo-class or pseudo-element, or the other way around, when reading"));
UngetToken();
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
// If it starts with "::", it better be a pseudo-element
if (parsingPseudoElement &&
!isPseudoElement &&
!isAnonBox) {
REPORT_UNEXPECTED_TOKEN(NS_LITERAL_STRING("Expected pseudo-element but found"));
UngetToken();
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
if (nsCSSPseudoClasses::notPseudo == pseudo) {
if (aIsNegated) { // :not() can't be itself negated
REPORT_UNEXPECTED_TOKEN(NS_LITERAL_STRING("Negation pseudo-class can't be negated"));
UngetToken();
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
// CSS 3 Negation pseudo-class takes one simple selector as argument
ParseNegatedSimpleSelector(aDataMask, aSelector, aParsingStatus, aErrorCode);
if (SELECTOR_PARSING_ENDED_OK != aParsingStatus) {
return;
}
}
else if (!parsingPseudoElement &&
nsCSSPseudoClasses::IsPseudoClass(pseudo)) {
aDataMask |= SEL_MASK_PCLASS;
if (nsCSSPseudoClasses::lang == pseudo) {
ParseLangSelector(aSelector, aParsingStatus, aErrorCode);
}
// XXX are there more pseudo classes which accept arguments ?
else {
aSelector.AddPseudoClass(pseudo);
}
if (SELECTOR_PARSING_ENDED_OK != aParsingStatus) {
return;
}
}
else if (isPseudoElement || isAnonBox) {
// Pseudo-element. Make some more sanity checks.
if (aIsNegated) { // pseudo-elements can't be negated
REPORT_UNEXPECTED_TOKEN(NS_LITERAL_STRING("Pseudo-elements can't be negated"));
UngetToken();
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
// 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
&& !IsTreePseudoElement(pseudo)
#endif
) {
REPORT_UNEXPECTED_TOKEN(NS_LITERAL_STRING("This pseudo-element must use the \"::\" form: "));
UngetToken();
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
if (0 == (aDataMask & SEL_MASK_PELEM)) {
aDataMask |= SEL_MASK_PELEM;
aSelector.AddPseudoClass(pseudo); // store it here, it gets pulled later
#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(aErrorCode, aSelector)) {
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
}
#endif
// ensure selector ends here, must be followed by EOF, space, '{' or ','
if (GetToken(aErrorCode, PR_FALSE)) { // premature eof is ok (here!)
if ((eCSSToken_WhiteSpace == mToken.mType) ||
(mToken.IsSymbol('{') || mToken.IsSymbol(','))) {
UngetToken();
aParsingStatus = SELECTOR_PARSING_STOPPED_OK;
return;
}
REPORT_UNEXPECTED_TOKEN(NS_LITERAL_STRING("Found trailing token after pseudo-element, which must be the last part of a selector: "));
UngetToken();
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
}
else { // multiple pseudo elements, not legal
REPORT_UNEXPECTED_TOKEN(NS_LITERAL_STRING("Extra pseudo-element"));
UngetToken();
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
} else {
// Not a pseudo-class, not a pseudo-element.... forget it
REPORT_UNEXPECTED_TOKEN(NS_LITERAL_STRING("Unknown pseudo-class or pseudo-element"));
UngetToken();
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
aParsingStatus = SELECTOR_PARSING_ENDED_OK;
}
//
// Parse the argument of a negation pseudo-class :not()
//
void CSSParserImpl::ParseNegatedSimpleSelector(PRInt32& aDataMask,
nsCSSSelector& aSelector,
PRInt32& aParsingStatus,
nsresult& aErrorCode)
{
// Check if we have the first parenthesis
if (ExpectSymbol(aErrorCode, '(', PR_FALSE)) {
if (! GetToken(aErrorCode, PR_FALSE)) { // premature eof
REPORT_UNEXPECTED_EOF(NS_LITERAL_STRING("selector within negation"));
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
aParsingStatus = SELECTOR_PARSING_ENDED_OK;
nsCSSSelector* newSel = new nsCSSSelector();
if (nsnull == aSelector.mNegations &&
((eCSSToken_ID == mToken.mType) ||
mToken.IsSymbol('.') ||
mToken.IsSymbol(':') ||
mToken.IsSymbol('['))) {
// ID, class and attribute selectors and pseudo-classes are stored in
// the first mNegations attached to a selector
aSelector.mNegations = newSel;
}
if (eCSSToken_ID == mToken.mType) { // #id
ParseIDSelector(aDataMask, *aSelector.mNegations, aParsingStatus, aErrorCode);
}
else if (mToken.IsSymbol('.')) { // .class
ParseClassSelector(aDataMask, *aSelector.mNegations, aParsingStatus, aErrorCode);
}
else if (mToken.IsSymbol(':')) { // :pseudo
ParsePseudoSelector(aDataMask, *aSelector.mNegations, aParsingStatus, aErrorCode, PR_TRUE);
}
else if (mToken.IsSymbol('[')) { // attribute
ParseAttributeSelector(aDataMask, *aSelector.mNegations, aParsingStatus, aErrorCode);
}
else {
// then it should be a type element or universal selector
if (nsnull == aSelector.mNegations) {
aSelector.mNegations = newSel;
}
newSel = new nsCSSSelector();
nsCSSSelector* negations = aSelector.mNegations;
while (nsnull != negations->mNegations) {
negations = negations->mNegations;
}
// negated type element selectors and universal selectors are stored after the first
// mNegations containing only negated IDs, classes, attributes and pseudo-classes
negations->mNegations = newSel;
ParseTypeOrUniversalSelector(aDataMask, *newSel, aParsingStatus, aErrorCode, PR_TRUE);
}
if (SELECTOR_PARSING_STOPPED_ERROR == aParsingStatus) {
REPORT_UNEXPECTED_TOKEN(NS_LITERAL_STRING("Malformed simple selector as negation pseudo-class argument"));
return;
}
// close the parenthesis
if (!ExpectSymbol(aErrorCode, ')', PR_TRUE)) {
REPORT_UNEXPECTED_TOKEN(NS_LITERAL_STRING("Missing closing ')' in negation pseudo-class"));
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
}
}
else {
REPORT_UNEXPECTED_TOKEN(NS_LITERAL_STRING("Missing argument in negation pseudo-class"));
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
}
}
//
// Parse the argument of a pseudo-class :lang()
//
void CSSParserImpl::ParseLangSelector(nsCSSSelector& aSelector,
PRInt32& aParsingStatus,
nsresult& aErrorCode)
{
// Check if we have the first parenthesis
if (ExpectSymbol(aErrorCode, '(', PR_FALSE)) {
if (! GetToken(aErrorCode, PR_TRUE)) { // premature eof
REPORT_UNEXPECTED_EOF(NS_LITERAL_STRING("argument to :lang selector"));
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
// We expect an identifier with a language abbreviation
if (eCSSToken_Ident != mToken.mType) {
REPORT_UNEXPECTED_TOKEN(NS_LITERAL_STRING("Expected identifier for lang pseudo-class parameter"));
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
return;
}
// Add the pseudo with the language parameter
aSelector.AddPseudoClass(nsCSSPseudoClasses::lang, mToken.mIdent.get());
// close the parenthesis
if (!ExpectSymbol(aErrorCode, ')', PR_TRUE)) {
REPORT_UNEXPECTED_TOKEN(NS_LITERAL_STRING("Missing closing ')' in lang pseudo-class"));
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
}
}
else {
REPORT_UNEXPECTED_TOKEN(NS_LITERAL_STRING("Missing argument in lang pseudo-class"));
aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR;
}
}
/**
* This is the format for selectors:
* operator? [[namespace |]? element_name]? [ ID | class | attrib | pseudo ]*
*/
PRBool CSSParserImpl::ParseSelector(nsresult& aErrorCode,
nsCSSSelector& aSelector)
{
PRInt32 dataMask = 0;
PRInt32 parsingStatus = SELECTOR_PARSING_ENDED_OK;
if (! GetToken(aErrorCode, PR_TRUE)) {
REPORT_UNEXPECTED_EOF(NS_LITERAL_STRING("selector"));
return PR_FALSE;
}
ParseTypeOrUniversalSelector(dataMask, aSelector, parsingStatus, aErrorCode, PR_FALSE);
if (SELECTOR_PARSING_STOPPED_OK == parsingStatus) {
return PR_TRUE;
}
else if (SELECTOR_PARSING_STOPPED_ERROR == parsingStatus) {
return PR_FALSE;
}
for (;;) {
parsingStatus = SELECTOR_PARSING_ENDED_OK;
if (eCSSToken_ID == mToken.mType) { // #id
ParseIDSelector(dataMask, aSelector, parsingStatus, aErrorCode);
}
else if (mToken.IsSymbol('.')) { // .class
ParseClassSelector(dataMask, aSelector, parsingStatus, aErrorCode);
}
else if (mToken.IsSymbol(':')) { // :pseudo
ParsePseudoSelector(dataMask, aSelector, parsingStatus, aErrorCode, PR_FALSE);
}
else if (mToken.IsSymbol('[')) { // attribute
ParseAttributeSelector(dataMask, aSelector, parsingStatus, aErrorCode);
}
else { // not a selector token, we're done
break;
}
if (SELECTOR_PARSING_STOPPED_OK == parsingStatus) {
return PR_TRUE;
}
else if (SELECTOR_PARSING_STOPPED_ERROR == parsingStatus) {
return PR_FALSE;
}
if (! GetToken(aErrorCode, PR_FALSE)) { // premature eof is ok (here!)
return PR_TRUE;
}
}
UngetToken();
return PRBool(0 != dataMask);
}
nsCSSDeclaration*
CSSParserImpl::ParseDeclarationBlock(nsresult& aErrorCode,
PRBool aCheckForBraces)
{
if (aCheckForBraces) {
if (!ExpectSymbol(aErrorCode, '{', PR_TRUE)) {
REPORT_UNEXPECTED_TOKEN(NS_LITERAL_STRING("Expected '{' to begin declaration block but found"));
OUTPUT_ERROR();
return nsnull;
}
}
nsCSSDeclaration* declaration = new nsCSSDeclaration();
mData.AssertInitialState();
if (declaration) {
for (;;) {
PRBool changed;
if (!ParseDeclaration(aErrorCode, declaration, aCheckForBraces,
&changed)) {
if (!SkipDeclaration(aErrorCode, aCheckForBraces)) {
break;
}
if (aCheckForBraces) {
if (ExpectSymbol(aErrorCode, '}', PR_TRUE)) {
break;
}
}
// Since the skipped declaration didn't end the block we parse
// the next declaration.
}
}
declaration->CompressFrom(&mData);
}
return declaration;
}
// The types to pass to ParseColorComponent. These correspond to the
// various datatypes that can go within rgb().
#define COLOR_TYPE_UNKNOWN 0
#define COLOR_TYPE_INTEGERS 1
#define COLOR_TYPE_PERCENTAGES 2
PRBool CSSParserImpl::ParseColor(nsresult& aErrorCode, nsCSSValue& aValue)
{
if (!GetToken(aErrorCode, PR_TRUE)) {
REPORT_UNEXPECTED_EOF(NS_LITERAL_STRING("color"));
return PR_FALSE;
}
nsCSSToken* tk = &mToken;
nscolor rgba;
switch (tk->mType) {
case eCSSToken_ID:
// #xxyyzz
if (NS_HexToRGB(tk->mIdent, &rgba)) {
aValue.SetColorValue(rgba);
return PR_TRUE;
}
break;
case eCSSToken_Ident:
if (NS_ColorNameToRGB(tk->mIdent, &rgba)) {
aValue.SetStringValue(tk->mIdent, eCSSUnit_String);
return PR_TRUE;
}
else {
nsCSSKeyword keyword = nsCSSKeywords::LookupKeyword(tk->mIdent);
if (eCSSKeyword_UNKNOWN < keyword) { // known keyword
PRInt32 index = SearchKeywordTable(keyword, nsCSSProps::kColorKTable);
if (0 < index) {
aValue.SetIntValue(nsCSSProps::kColorKTable[index], eCSSUnit_Integer);
return PR_TRUE;
}
}
}
break;
case eCSSToken_Function:
if (mToken.mIdent.LowerCaseEqualsLiteral("rgb")) {
// rgb ( component , component , component )
PRUint8 r, g, b;
PRInt32 type = COLOR_TYPE_UNKNOWN;
if (ExpectSymbol(aErrorCode, '(', PR_FALSE) && // this won't fail
ParseColorComponent(aErrorCode, r, type, ',') &&
ParseColorComponent(aErrorCode, g, type, ',') &&
ParseColorComponent(aErrorCode, b, type, ')')) {
aValue.SetColorValue(NS_RGB(r,g,b));
return PR_TRUE;
}
return PR_FALSE; // already pushed back
}
else if (mToken.mIdent.LowerCaseEqualsLiteral("-moz-rgba")) {
// rgba ( component , component , component , opacity )
PRUint8 r, g, b, a;
PRInt32 type = COLOR_TYPE_UNKNOWN;
if (ExpectSymbol(aErrorCode, '(', PR_FALSE) && // this won't fail
ParseColorComponent(aErrorCode, r, type, ',') &&
ParseColorComponent(aErrorCode, g, type, ',') &&
ParseColorComponent(aErrorCode, b, type, ',') &&
ParseColorOpacity(aErrorCode, a)) {
aValue.SetColorValue(NS_RGBA(r, g, b, a));
return PR_TRUE;
}
return PR_FALSE; // already pushed back
}
else if (mToken.mIdent.LowerCaseEqualsLiteral("hsl")) {
// hsl ( hue , saturation , lightness )
// "hue" is a number, "saturation" and "lightness" are percentages.
if (ParseHSLColor(aErrorCode, rgba, ')')) {
aValue.SetColorValue(rgba);
return PR_TRUE;
}
return PR_FALSE;
}
else if (mToken.mIdent.LowerCaseEqualsLiteral("-moz-hsla")) {
// hsla ( hue , saturation , lightness , opacity )
// "hue" is a number, "saturation" and "lightness" are percentages,
// "opacity" is a number.
PRUint8 a;
if (ParseHSLColor(aErrorCode, rgba, ',') &&
ParseColorOpacity(aErrorCode, a)) {
aValue.SetColorValue(NS_RGBA(NS_GET_R(rgba), NS_GET_G(rgba),
NS_GET_B(rgba), a));
return PR_TRUE;
}
return PR_FALSE;
}
break;
default:
break;
}
// try 'xxyyzz' without '#' prefix for compatibility with IE and Nav4x (bug 23236 and 45804)
if (mNavQuirkMode && !IsParsingCompoundProperty()) {
// - 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.SetColorValue(rgba);
return PR_TRUE;
}
}
// It's not a color
REPORT_UNEXPECTED_TOKEN(NS_LITERAL_STRING("Expected color but found"));
UngetToken();
return PR_FALSE;
}
// aType will be set if we have already parsed other color components
// in this color spec
PRBool CSSParserImpl::ParseColorComponent(nsresult& aErrorCode,
PRUint8& aComponent,
PRInt32& aType,
char aStop)
{
if (!GetToken(aErrorCode, PR_TRUE)) {
REPORT_UNEXPECTED_EOF(NS_LITERAL_STRING("color component"));
return PR_FALSE;
}
float value;
nsCSSToken* tk = &mToken;
switch (tk->mType) {
case eCSSToken_Number:
switch (aType) {
case COLOR_TYPE_UNKNOWN:
aType = COLOR_TYPE_INTEGERS;
break;
case COLOR_TYPE_INTEGERS:
break;
case COLOR_TYPE_PERCENTAGES:
REPORT_UNEXPECTED_TOKEN(
NS_LITERAL_STRING("Expected a percentage but found"));
UngetToken();
return PR_FALSE;
default:
NS_NOTREACHED("Someone forgot to add the new color component type in here");
}
if (!mToken.mIntegerValid) {
REPORT_UNEXPECTED_TOKEN(
NS_LITERAL_STRING("Expected an integer but found"));
UngetToken();
return PR_FALSE;
}
value = tk->mNumber;
break;
case eCSSToken_Percentage:
switch (aType) {
case COLOR_TYPE_UNKNOWN:
aType = COLOR_TYPE_PERCENTAGES;
break;
case COLOR_TYPE_INTEGERS:
REPORT_UNEXPECTED_TOKEN(
NS_LITERAL_STRING("Expected an integer but found"));
UngetToken();
return PR_FALSE;
case COLOR_TYPE_PERCENTAGES:
break;
default:
NS_NOTREACHED("Someone forgot to add the new color component type in here");
}
value = tk->mNumber * 255.0f;
break;
default:
REPORT_UNEXPECTED_TOKEN(
NS_LITERAL_STRING("Expected number or percentage in rgb() but found"));
UngetToken();
return PR_FALSE;
}
if (ExpectSymbol(aErrorCode, aStop, PR_TRUE)) {
if (value < 0.0f) value = 0.0f;
if (value > 255.0f) value = 255.0f;
aComponent = (PRUint8) value;
return PR_TRUE;
}
PRUnichar stopString[2];
stopString[0] = PRUnichar(aStop);
stopString[1] = PRUnichar(0);
REPORT_UNEXPECTED_TOKEN(NS_LITERAL_STRING("Expected '") +
nsDependentString(stopString, 1) +
NS_LITERAL_STRING("' but found"));
return PR_FALSE;
}
PRBool CSSParserImpl::ParseHSLColor(nsresult& aErrorCode, nscolor& aColor,
char aStop)
{
float h, s, l;
if (!ExpectSymbol(aErrorCode, '(', PR_FALSE)) {
NS_ERROR("How did this get to be a function token?");
return PR_FALSE;
}
// Get the hue
if (!GetToken(aErrorCode, PR_TRUE)) {
REPORT_UNEXPECTED_EOF(NS_LITERAL_STRING("hue"));
return PR_FALSE;
}
if (mToken.mType != eCSSToken_Number) {
REPORT_UNEXPECTED_TOKEN(
NS_LITERAL_STRING("Expected a number but found"));
UngetToken();
return PR_FALSE;
}
h = mToken.mNumber;
h /= 360.0f;
// hue values are wraparound
h = h - floor(h);
if (!ExpectSymbol(aErrorCode, ',', PR_TRUE)) {
REPORT_UNEXPECTED_TOKEN(NS_LITERAL_STRING("Expected ',' but found"));
return PR_FALSE;
}
// Get the saturation
if (!GetToken(aErrorCode, PR_TRUE)) {
REPORT_UNEXPECTED_EOF(NS_LITERAL_STRING("saturation"));
return PR_FALSE;
}
if (mToken.mType != eCSSToken_Percentage) {
REPORT_UNEXPECTED_TOKEN(
NS_LITERAL_STRING("Expected a percentage but found"));
UngetToken();
return PR_FALSE;
}
s = mToken.mNumber;
if (s < 0.0f) s = 0.0f;
if (s > 1.0f) s = 1.0f;
if (!ExpectSymbol(aErrorCode, ',', PR_TRUE)) {
REPORT_UNEXPECTED_TOKEN(NS_LITERAL_STRING("Expected ',' but found"));
return PR_FALSE;
}
// Get the lightness
if (!GetToken(aErrorCode, PR_TRUE)) {
REPORT_UNEXPECTED_EOF(NS_LITERAL_STRING("lightness"));
return PR_FALSE;
}
if (mToken.mType != eCSSToken_Percentage) {
REPORT_UNEXPECTED_TOKEN(
NS_LITERAL_STRING("Expected a percentage but found"));
UngetToken();
return PR_FALSE;
}
l = mToken.mNumber;
if (l < 0.0f) l = 0.0f;
if (l > 1.0f) l = 1.0f;
if (ExpectSymbol(aErrorCode, aStop, PR_TRUE)) {
aColor = NS_HSL2RGB(h, s, l);
return PR_TRUE;
}
PRUnichar stopString[2];
stopString[0] = PRUnichar(aStop);
stopString[1] = PRUnichar(0);
REPORT_UNEXPECTED_TOKEN(NS_LITERAL_STRING("Expected '") +
nsDependentString(stopString, 1) +
NS_LITERAL_STRING("' but found"));
return PR_FALSE;
}
PRBool CSSParserImpl::ParseColorOpacity(nsresult& aErrorCode, PRUint8& aOpacity)
{
if (!GetToken(aErrorCode, PR_TRUE)) {
REPORT_UNEXPECTED_EOF(NS_LITERAL_STRING("opacity in color value"));
return PR_FALSE;
}
if (mToken.mType != eCSSToken_Number) {
REPORT_UNEXPECTED_TOKEN(
NS_LITERAL_STRING("Expected a number but found"));
UngetToken();
return PR_FALSE;
}
PRInt32 value = NSToIntRound(mToken.mNumber*255);
if (!ExpectSymbol(aErrorCode, ')', PR_TRUE)) {
REPORT_UNEXPECTED_TOKEN(NS_LITERAL_STRING("Expected ')' but found"));
return PR_FALSE;
}
if (value < 0) value = 0;
if (value > 255) value = 255;
aOpacity = (PRUint8)value;
return PR_TRUE;
}
#ifdef MOZ_XUL
PRBool CSSParserImpl::ParseTreePseudoElement(nsresult& aErrorCode,
nsCSSSelector& aSelector)
{
if (ExpectSymbol(aErrorCode, '(', PR_FALSE)) {
while (!ExpectSymbol(aErrorCode, ')', PR_TRUE)) {
if (!GetToken(aErrorCode, PR_TRUE)) {
return PR_FALSE;
}
else if (eCSSToken_Ident == mToken.mType) {
nsCOMPtr<nsIAtom> pseudo = do_GetAtom(mToken.mIdent);
aSelector.AddPseudoClass(pseudo);
}
else if (eCSSToken_Symbol == mToken.mType) {
if (!mToken.IsSymbol(','))
return PR_FALSE;
}
else return PR_FALSE;
}
return PR_TRUE;
}
return PR_FALSE;
}
#endif
//----------------------------------------------------------------------
PRBool
CSSParserImpl::ParseDeclaration(nsresult& aErrorCode,
nsCSSDeclaration* aDeclaration,
PRBool aCheckForBraces,
PRBool* aChanged)
{
mTempData.AssertInitialState();
// Get property name
nsCSSToken* tk = &mToken;
nsAutoString propertyName;
for (;;) {
if (!GetToken(aErrorCode, PR_TRUE)) {
if (aCheckForBraces) {
REPORT_UNEXPECTED_EOF(
NS_LITERAL_STRING("';' or '}' to end declaration"));
}
return PR_FALSE;
}
if (eCSSToken_Ident == tk->mType) {
propertyName = tk->mIdent;
// grab the ident before the ExpectSymbol trashes the token
if (!ExpectSymbol(aErrorCode, ':', PR_TRUE)) {
REPORT_UNEXPECTED_TOKEN(NS_LITERAL_STRING("Expected ':' but found"));
REPORT_UNEXPECTED(NS_LITERAL_STRING("Declaration dropped."));
OUTPUT_ERROR();
return PR_FALSE;
}
break;
}
if (tk->IsSymbol(';')) {
// dangling semicolons are skipped
continue;
}
if (!tk->IsSymbol('}')) {
REPORT_UNEXPECTED_TOKEN(
NS_LITERAL_STRING("Expected declaration but found"));
REPORT_UNEXPECTED(NS_LITERAL_STRING("Skipped to next declaration."));
OUTPUT_ERROR();
}
// Not a declaration...
UngetToken();
return PR_FALSE;
}
// Map property name to it's ID and then parse the property
nsCSSProperty propID = nsCSSProps::LookupProperty(propertyName);
if (eCSSProperty_UNKNOWN == propID) { // unknown property
REPORT_UNEXPECTED(NS_LITERAL_STRING("Unknown property '") +
propertyName +
NS_LITERAL_STRING("'. Declaration dropped."));
OUTPUT_ERROR();
return PR_FALSE;
}
if (! ParseProperty(aErrorCode, propID)) {
// XXX Much better to put stuff in the value parsers instead...
REPORT_UNEXPECTED(
NS_LITERAL_STRING("Error in parsing value for property '") +
propertyName +
NS_LITERAL_STRING("'. Declaration dropped."));
OUTPUT_ERROR();
ClearTempData(propID);
return PR_FALSE;
}
CLEAR_ERROR();
// See if the declaration is followed by a "!important" declaration
PRBool isImportant = PR_FALSE;
if (!GetToken(aErrorCode, PR_TRUE)) {
if (aCheckForBraces) {
// Premature eof is not ok when proper termination is mandated
REPORT_UNEXPECTED_EOF(NS_LITERAL_STRING("end of declaration"));
ClearTempData(propID);
return PR_FALSE;
}
TransferTempData(aDeclaration, propID, isImportant, aChanged);
return PR_TRUE;
}
else {
if (eCSSToken_Symbol == tk->mType) {
if ('!' == tk->mSymbol) {
// Look for important ident
if (!GetToken(aErrorCode, PR_TRUE)) {
// Premature eof is not ok
REPORT_UNEXPECTED_EOF(NS_LITERAL_STRING("important"));
ClearTempData(propID);
return PR_FALSE;
}
if ((eCSSToken_Ident != tk->mType) ||
!tk->mIdent.LowerCaseEqualsLiteral("important")) {
REPORT_UNEXPECTED_TOKEN(
NS_LITERAL_STRING("Expected 'important' but found"));
OUTPUT_ERROR();
UngetToken();
ClearTempData(propID);
return PR_FALSE;
}
isImportant = PR_TRUE;
}
else {
// Not a !important declaration
UngetToken();
}
}
else {
// Not a !important declaration
UngetToken();
}
}
// Make sure valid property declaration is terminated with either a
// semicolon or a right-curly-brace (when aCheckForBraces is true).
// When aCheckForBraces is false, proper termination is either
// semicolon or EOF.
if (!GetToken(aErrorCode, PR_TRUE)) {
if (aCheckForBraces) {
// Premature eof is not ok
REPORT_UNEXPECTED_EOF(NS_LITERAL_STRING("';' or '}' to end declaration"));
ClearTempData(propID);
return PR_FALSE;
}
TransferTempData(aDeclaration, propID, isImportant, aChanged);
return PR_TRUE;
}
if (eCSSToken_Symbol == tk->mType) {
if (';' == tk->mSymbol) {
TransferTempData(aDeclaration, propID, isImportant, aChanged);
return PR_TRUE;
}
if (!aCheckForBraces) {
// If we didn't hit eof and we didn't see a semicolon then the
// declaration is not properly terminated.
REPORT_UNEXPECTED_TOKEN(
NS_LITERAL_STRING("Expected ';' to terminate declaration but found"));
REPORT_UNEXPECTED(NS_LITERAL_STRING("Declaration dropped."));
OUTPUT_ERROR();
ClearTempData(propID);
return PR_FALSE;
}
if ('}' == tk->mSymbol) {
UngetToken();
TransferTempData(aDeclaration, propID, isImportant, aChanged);
return PR_TRUE;
}
}
REPORT_UNEXPECTED_TOKEN(
aCheckForBraces
? NS_LITERAL_STRING("Expected ';' or '}' to terminate declaration but found")
: NS_LITERAL_STRING("Expected ';' to terminate declaration but found"));
REPORT_UNEXPECTED(NS_LITERAL_STRING("Declaration dropped."));
OUTPUT_ERROR();
ClearTempData(propID);
return PR_FALSE;
}
void
CSSParserImpl::ClearTempData(nsCSSProperty aPropID)
{
if (nsCSSProps::IsShorthand(aPropID)) {
CSSPROPS_FOR_SHORTHAND_SUBPROPERTIES(p, aPropID) {
mTempData.ClearProperty(*p);
}
} else {
mTempData.ClearProperty(aPropID);
}
mTempData.AssertInitialState();
}
void
CSSParserImpl::TransferTempData(nsCSSDeclaration* aDeclaration,
nsCSSProperty aPropID, PRBool aIsImportant,
PRBool* aChanged)
{
if (nsCSSProps::IsShorthand(aPropID)) {
CSSPROPS_FOR_SHORTHAND_SUBPROPERTIES(p, aPropID) {
DoTransferTempData(aDeclaration, *p, aIsImportant, aChanged);
}
} else {
DoTransferTempData(aDeclaration, aPropID, aIsImportant, aChanged);
}
mTempData.AssertInitialState();
}
// Perhaps the transferring code should be in nsCSSExpandedDataBlock, in
// case some other caller wants to use it in the future (although I
// can't think of why).
void
CSSParserImpl::DoTransferTempData(nsCSSDeclaration* aDeclaration,
nsCSSProperty aPropID, PRBool aIsImportant,
PRBool* aChanged)
{
NS_ASSERTION(mTempData.HasPropertyBit(aPropID), "oops");
if (aIsImportant) {
if (!mData.HasImportantBit(aPropID))
*aChanged = PR_TRUE;
mData.SetImportantBit(aPropID);
} else {
if (mData.HasImportantBit(aPropID)) {
mTempData.ClearProperty(aPropID);
return;
}
}
mData.SetPropertyBit(aPropID);
mTempData.ClearPropertyBit(aPropID);
aDeclaration->ValueAppended(aPropID);
/*
* Save needless copying and allocation by calling the destructor in
* the destination, copying memory directly, and then using placement
* new.
*/
void *v_source = mTempData.PropertyAt(aPropID);
void *v_dest = mData.PropertyAt(aPropID);
switch (nsCSSProps::kTypeTable[aPropID]) {
case eCSSType_Value: {
nsCSSValue *source = NS_STATIC_CAST(nsCSSValue*, v_source);
nsCSSValue *dest = NS_STATIC_CAST(nsCSSValue*, v_dest);
if (*source != *dest)
*aChanged = PR_TRUE;
dest->~nsCSSValue();
memcpy(dest, source, sizeof(nsCSSValue));
new (source) nsCSSValue();
} break;
case eCSSType_Rect: {
nsCSSRect *source = NS_STATIC_CAST(nsCSSRect*, v_source);
nsCSSRect *dest = NS_STATIC_CAST(nsCSSRect*, v_dest);
if (*source != *dest)
*aChanged = PR_TRUE;
dest->~nsCSSRect();
memcpy(dest, source, sizeof(nsCSSRect));
new (source) nsCSSRect();
} break;
case eCSSType_ValueList: {
nsCSSValueList **source = NS_STATIC_CAST(nsCSSValueList**, v_source);
nsCSSValueList **dest = NS_STATIC_CAST(nsCSSValueList**, v_dest);
if (!nsCSSValueList::Equal(*source, *dest))
*aChanged = PR_TRUE;
delete *dest;
*dest = *source;
*source = nsnull;
} break;
case eCSSType_CounterData: {
nsCSSCounterData **source = NS_STATIC_CAST(nsCSSCounterData**, v_source);
nsCSSCounterData **dest = NS_STATIC_CAST(nsCSSCounterData**, v_dest);
if (!nsCSSCounterData::Equal(*source, *dest))
*aChanged = PR_TRUE;
delete *dest;
*dest = *source;
*source = nsnull;
} break;
case eCSSType_Quotes: {
nsCSSQuotes **source = NS_STATIC_CAST(nsCSSQuotes**, v_source);
nsCSSQuotes **dest = NS_STATIC_CAST(nsCSSQuotes**, v_dest);
if (!nsCSSQuotes::Equal(*source, *dest))
*aChanged = PR_TRUE;
delete *dest;
*dest = *source;
*source = nsnull;
} break;
case eCSSType_Shadow: {
nsCSSShadow **source = NS_STATIC_CAST(nsCSSShadow**, v_source);
nsCSSShadow **dest = NS_STATIC_CAST(nsCSSShadow**, v_dest);
if (!nsCSSShadow::Equal(*source, *dest))
*aChanged = PR_TRUE;
delete *dest;
*dest = *source;
*source = nsnull;
} break;
}
}
// Flags for ParseVariant method
#define VARIANT_KEYWORD 0x000001 // K
#define VARIANT_LENGTH 0x000002 // L
#define VARIANT_PERCENT 0x000004 // P
#define VARIANT_COLOR 0x000008 // C
#define VARIANT_URL 0x000010 // U
#define VARIANT_NUMBER 0x000020 // N
#define VARIANT_INTEGER 0x000040 // I
#define VARIANT_ANGLE 0x000080 // G
#define VARIANT_FREQUENCY 0x000100 // F
#define VARIANT_TIME 0x000200 // T
#define VARIANT_STRING 0x000400 // S
#define VARIANT_COUNTER 0x000800 //
#define VARIANT_ATTR 0x001000 //
#define VARIANT_IDENTIFIER 0x002000 // D
#define VARIANT_AUTO 0x010000 // A
#define VARIANT_INHERIT 0x020000 // H
#define VARIANT_NONE 0x040000 // O
#define VARIANT_NORMAL 0x080000 // M
// Common combinations of variants
#define VARIANT_AL (VARIANT_AUTO | VARIANT_LENGTH)
#define VARIANT_LP (VARIANT_LENGTH | VARIANT_PERCENT)
#define VARIANT_AH (VARIANT_AUTO | VARIANT_INHERIT)
#define VARIANT_AHLP (VARIANT_AH | VARIANT_LP)
#define VARIANT_AHI (VARIANT_AH | VARIANT_INTEGER)
#define VARIANT_AHK (VARIANT_AH | VARIANT_KEYWORD)
#define VARIANT_AUK (VARIANT_AUTO | VARIANT_URL | VARIANT_KEYWORD)
#define VARIANT_AHUK (VARIANT_AH | VARIANT_URL | VARIANT_KEYWORD)
#define VARIANT_AHL (VARIANT_AH | VARIANT_LENGTH)
#define VARIANT_AHKL (VARIANT_AHK | VARIANT_LENGTH)
#define VARIANT_HK (VARIANT_INHERIT | VARIANT_KEYWORD)
#define VARIANT_HKF (VARIANT_HK | VARIANT_FREQUENCY)
#define VARIANT_HKL (VARIANT_HK | VARIANT_LENGTH)
#define VARIANT_HKLP (VARIANT_HK | VARIANT_LP)
#define VARIANT_HL (VARIANT_INHERIT | VARIANT_LENGTH)
#define VARIANT_HI (VARIANT_INHERIT | VARIANT_INTEGER)
#define VARIANT_HLP (VARIANT_HL | VARIANT_PERCENT)
#define VARIANT_HLPN (VARIANT_HLP | VARIANT_NUMBER)
#define VARIANT_HLPO (VARIANT_HLP | VARIANT_NONE)
#define VARIANT_HTP (VARIANT_INHERIT | VARIANT_TIME | VARIANT_PERCENT)
#define VARIANT_HMK (VARIANT_HK | VARIANT_NORMAL)
#define VARIANT_HMKI (VARIANT_HMK | VARIANT_INTEGER)
#define VARIANT_HC (VARIANT_INHERIT | VARIANT_COLOR)
#define VARIANT_HCK (VARIANT_HK | VARIANT_COLOR)
#define VARIANT_HUO (VARIANT_INHERIT | VARIANT_URL | VARIANT_NONE)
#define VARIANT_AHUO (VARIANT_AUTO | VARIANT_HUO)
#define VARIANT_HPN (VARIANT_INHERIT | VARIANT_PERCENT | VARIANT_NUMBER)
#define VARIANT_HOK (VARIANT_HK | VARIANT_NONE)
#define VARIANT_HN (VARIANT_INHERIT | VARIANT_NUMBER)
#define VARIANT_HON (VARIANT_HN | VARIANT_NONE)
#define VARIANT_HOS (VARIANT_INHERIT | VARIANT_NONE | VARIANT_STRING)
static const nsCSSProperty kBorderTopIDs[] = {
eCSSProperty_border_top_width,
eCSSProperty_border_top_style,
eCSSProperty_border_top_color
};
static const nsCSSProperty kBorderRightIDs[] = {
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,
eCSSProperty_border_left_style,
eCSSProperty_border_left_color
};
PRInt32 CSSParserImpl::SearchKeywordTable(nsCSSKeyword aKeyword, const PRInt32 aKeywordTable[])
{
PRInt32 index = 0;
while (0 <= aKeywordTable[index]) {
if (aKeyword == nsCSSKeyword(aKeywordTable[index++])) {
return index;
}
index++;
}
return -1;
}
PRBool CSSParserImpl::ParseEnum(nsresult& aErrorCode, nsCSSValue& aValue,
const PRInt32 aKeywordTable[])
{
nsString* ident = NextIdent(aErrorCode);
if (nsnull == ident) {
return PR_FALSE;
}
nsCSSKeyword keyword = nsCSSKeywords::LookupKeyword(*ident);
if (eCSSKeyword_UNKNOWN < keyword) {
PRInt32 index = SearchKeywordTable(keyword, aKeywordTable);
if (0 < index) {
aValue.SetIntValue(aKeywordTable[index], eCSSUnit_Enumerated);
return PR_TRUE;
}
}
// Put the unknown identifier back and return
UngetToken();
return PR_FALSE;
}
PRBool CSSParserImpl::TranslateDimension(nsresult& aErrorCode,
nsCSSValue& aValue,
PRInt32 aVariantMask,
float aNumber,
const nsString& aUnit)
{
nsCSSUnit units;
PRInt32 type = 0;
if (!aUnit.IsEmpty()) {
nsCSSKeyword id = nsCSSKeywords::LookupKeyword(aUnit);
switch (id) {
case eCSSKeyword_em: units = eCSSUnit_EM; type = VARIANT_LENGTH; break;
case eCSSKeyword_ex: units = eCSSUnit_XHeight; type = VARIANT_LENGTH; break;
case eCSSKeyword_ch: units = eCSSUnit_Char; type = VARIANT_LENGTH; break;
case eCSSKeyword_px: units = eCSSUnit_Pixel; type = VARIANT_LENGTH; break;
case eCSSKeyword_in: units = eCSSUnit_Inch; type = VARIANT_LENGTH; break;
case eCSSKeyword_cm: units = eCSSUnit_Centimeter; type = VARIANT_LENGTH; break;
case eCSSKeyword_mm: units = eCSSUnit_Millimeter; type = VARIANT_LENGTH; break;
case eCSSKeyword_pt: units = eCSSUnit_Point; type = VARIANT_LENGTH; break;
case eCSSKeyword_pc: units = eCSSUnit_Pica; type = VARIANT_LENGTH; break;
case eCSSKeyword_deg: units = eCSSUnit_Degree; type = VARIANT_ANGLE; break;
case eCSSKeyword_grad: units = eCSSUnit_Grad; type = VARIANT_ANGLE; break;
case eCSSKeyword_rad: units = eCSSUnit_Radian; type = VARIANT_ANGLE; break;
case eCSSKeyword_hz: units = eCSSUnit_Hertz; type = VARIANT_FREQUENCY; break;
case eCSSKeyword_khz: units = eCSSUnit_Kilohertz; type = VARIANT_FREQUENCY; break;
case eCSSKeyword_s: units = eCSSUnit_Seconds; type = VARIANT_TIME; break;
case eCSSKeyword_ms: units = eCSSUnit_Milliseconds; type = VARIANT_TIME; break;
default:
// unknown unit
return PR_FALSE;
}
} else {
// Must be a zero number...
NS_ASSERTION(0 == aNumber, "numbers without units must be 0");
if ((VARIANT_LENGTH & aVariantMask) != 0) {
units = eCSSUnit_Point;
type = VARIANT_LENGTH;
}
else if ((VARIANT_ANGLE & aVariantMask) != 0) {
units = eCSSUnit_Degree;
type = VARIANT_ANGLE;
}
else if ((VARIANT_FREQUENCY & aVariantMask) != 0) {
units = eCSSUnit_Hertz;
type = VARIANT_FREQUENCY;
}
else if ((VARIANT_TIME & aVariantMask) != 0) {
units = eCSSUnit_Seconds;
type = VARIANT_TIME;
}
else {
NS_ERROR("Variant mask does not include dimension; why were we called?");
return PR_FALSE;
}
}
if ((type & aVariantMask) != 0) {
aValue.SetFloatValue(aNumber, units);
return PR_TRUE;
}
return PR_FALSE;
}
PRBool CSSParserImpl::ParsePositiveVariant(nsresult& aErrorCode,
nsCSSValue& aValue,
PRInt32 aVariantMask,
const PRInt32 aKeywordTable[])
{
if (ParseVariant(aErrorCode, aValue, aVariantMask, aKeywordTable)) {
if (eCSSUnit_Number == aValue.GetUnit() ||
aValue.IsLengthUnit()){
if (aValue.GetFloatValue() < 0) {
UngetToken();
return PR_FALSE;
}
}
else if(aValue.GetUnit() == eCSSUnit_Percent) {
if (aValue.GetPercentValue() < 0) {
UngetToken();
return PR_FALSE;
}
}
return PR_TRUE;
}
return PR_FALSE;
}
PRBool CSSParserImpl::ParseVariant(nsresult& aErrorCode, nsCSSValue& aValue,
PRInt32 aVariantMask,
const PRInt32 aKeywordTable[])
{
if (!GetToken(aErrorCode, PR_TRUE)) {
return PR_FALSE;
}
nsCSSToken* tk = &mToken;
if (((aVariantMask & (VARIANT_AHK | VARIANT_NORMAL | VARIANT_NONE)) != 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 PR_TRUE;
}
}
if ((aVariantMask & VARIANT_INHERIT) != 0) {
if (eCSSKeyword_inherit == keyword) {
aValue.SetInheritValue();
return PR_TRUE;
}
else if (eCSSKeyword__moz_initial == keyword) { // anything that can inherit can also take an initial val.
aValue.SetInitialValue();
return PR_TRUE;
}
}
if ((aVariantMask & VARIANT_NONE) != 0) {
if (eCSSKeyword_none == keyword) {
aValue.SetNoneValue();
return PR_TRUE;
}
}
if ((aVariantMask & VARIANT_NORMAL) != 0) {
if (eCSSKeyword_normal == keyword) {
aValue.SetNormalValue();
return PR_TRUE;
}
}
if ((aVariantMask & VARIANT_KEYWORD) != 0) {
PRInt32 index = SearchKeywordTable(keyword, aKeywordTable);
if (0 < index) {
aValue.SetIntValue(aKeywordTable[index], eCSSUnit_Enumerated);
return PR_TRUE;
}
}
}
}
if (((aVariantMask & (VARIANT_LENGTH | VARIANT_ANGLE | VARIANT_FREQUENCY | VARIANT_TIME)) != 0) &&
tk->IsDimension()) {
if (TranslateDimension(aErrorCode, aValue, aVariantMask, tk->mNumber, tk->mIdent)) {
return PR_TRUE;
}
// Put the token back; we didn't parse it, so we shouldn't consume it
UngetToken();
return PR_FALSE;
}
if (((aVariantMask & VARIANT_PERCENT) != 0) &&
(eCSSToken_Percentage == tk->mType)) {
aValue.SetPercentValue(tk->mNumber);
return PR_TRUE;
}
if (((aVariantMask & VARIANT_NUMBER) != 0) &&
(eCSSToken_Number == tk->mType)) {
aValue.SetFloatValue(tk->mNumber, eCSSUnit_Number);
return PR_TRUE;
}
if (((aVariantMask & VARIANT_INTEGER) != 0) &&
(eCSSToken_Number == tk->mType) && tk->mIntegerValid) {
aValue.SetIntValue(tk->mInteger, eCSSUnit_Integer);
return PR_TRUE;
}
if (mNavQuirkMode && !IsParsingCompoundProperty()) { // NONSTANDARD: Nav interprets unitless numbers as px
if (((aVariantMask & VARIANT_LENGTH) != 0) &&
(eCSSToken_Number == tk->mType)) {
aValue.SetFloatValue(tk->mNumber, eCSSUnit_Pixel);
return PR_TRUE;
}
}
if (((aVariantMask & VARIANT_URL) != 0) &&
(eCSSToken_Function == tk->mType) &&
tk->mIdent.LowerCaseEqualsLiteral("url")) {
if (ParseURL(aErrorCode, aValue)) {
return PR_TRUE;
}
return PR_FALSE;
}
if ((aVariantMask & VARIANT_COLOR) != 0) {
if ((mNavQuirkMode && !IsParsingCompoundProperty()) || // NONSTANDARD: Nav interprets 'xxyyzz' values even without '#' prefix
(eCSSToken_ID == tk->mType) ||
(eCSSToken_Ident == tk->mType) ||
((eCSSToken_Function == tk->mType) &&
(tk->mIdent.LowerCaseEqualsLiteral("rgb") ||
tk->mIdent.LowerCaseEqualsLiteral("hsl") ||
tk->mIdent.LowerCaseEqualsLiteral("-moz-rgba") ||
tk->mIdent.LowerCaseEqualsLiteral("-moz-hsla")))) {
// Put token back so that parse color can get it
UngetToken();
if (ParseColor(aErrorCode, aValue)) {
return PR_TRUE;
}
return PR_FALSE;
}
}
if (((aVariantMask & VARIANT_STRING) != 0) &&
(eCSSToken_String == tk->mType)) {
nsAutoString buffer;
buffer.Append(tk->mSymbol);
buffer.Append(tk->mIdent);
buffer.Append(tk->mSymbol);
aValue.SetStringValue(buffer, eCSSUnit_String);
return PR_TRUE;
}
if (((aVariantMask & VARIANT_IDENTIFIER) != 0) &&
(eCSSToken_Ident == tk->mType)) {
aValue.SetStringValue(tk->mIdent, eCSSUnit_String);
return PR_TRUE;
}
if (((aVariantMask & VARIANT_COUNTER) != 0) &&
(eCSSToken_Function == tk->mType) &&
(tk->mIdent.LowerCaseEqualsLiteral("counter") ||
tk->mIdent.LowerCaseEqualsLiteral("counters"))) {
#ifdef ENABLE_COUNTERS
if (ParseCounter(aErrorCode, aValue)) {
return PR_TRUE;
}
#endif
return PR_FALSE;
}
if (((aVariantMask & VARIANT_ATTR) != 0) &&
(eCSSToken_Function == tk->mType) &&
tk->mIdent.LowerCaseEqualsLiteral("attr")) {
if (ParseAttr(aErrorCode, aValue)) {
return PR_TRUE;
}
return PR_FALSE;
}
UngetToken();
return PR_FALSE;
}
PRBool CSSParserImpl::ParseCounter(nsresult& aErrorCode, nsCSSValue& aValue)
{
nsCSSUnit unit = (mToken.mIdent.LowerCaseEqualsLiteral("counter") ?
eCSSUnit_Counter : eCSSUnit_Counters);
if (ExpectSymbol(aErrorCode, '(', PR_FALSE)) {
if (GetToken(aErrorCode, PR_TRUE)) {
if (eCSSToken_Ident == mToken.mType) {
nsAutoString counter;
counter.Append(mToken.mIdent);
if (eCSSUnit_Counters == unit) {
// get mandatory string
if (! ExpectSymbol(aErrorCode, ',', PR_TRUE)) {
return PR_FALSE;
}
if (GetToken(aErrorCode, PR_TRUE) && (eCSSToken_String == mToken.mType)) {
counter.Append(PRUnichar(','));
counter.Append(mToken.mSymbol); // quote too
counter.Append(mToken.mIdent);
counter.Append(mToken.mSymbol); // quote too
}
else {
UngetToken();
return PR_FALSE;
}
}
// get optional type
if (ExpectSymbol(aErrorCode, ',', PR_TRUE)) {
if (GetToken(aErrorCode, PR_TRUE) && (eCSSToken_Ident == mToken.mType)) {
nsCSSKeyword keyword = nsCSSKeywords::LookupKeyword(mToken.mIdent);
if ((eCSSKeyword_UNKNOWN < keyword) &&
(0 < SearchKeywordTable(keyword, nsCSSProps::kListStyleKTable))) {
counter.Append(PRUnichar(','));
counter.Append(mToken.mIdent);
}
else {
return PR_FALSE;
}
}
else {
UngetToken();
return PR_FALSE;
}
}
if (ExpectSymbol(aErrorCode, ')', PR_TRUE)) {
aValue.SetStringValue(counter, unit);
return PR_TRUE;
}
}
else {
UngetToken();
}
}
}
return PR_FALSE;
}
PRBool CSSParserImpl::ParseAttr(nsresult& aErrorCode, nsCSSValue& aValue)
{
if (ExpectSymbol(aErrorCode, '(', PR_FALSE)) {
if (GetToken(aErrorCode, PR_TRUE)) {
nsAutoString attr;
if (eCSSToken_Ident == mToken.mType) { // attr name or namespace
nsAutoString holdIdent(mToken.mIdent);
if (ExpectSymbol(aErrorCode, '|', PR_FALSE)) { // namespace
PRInt32 nameSpaceID = kNameSpaceID_Unknown;
if (mNameSpace) {
ToLowerCase(holdIdent); // always case insensitive, since stays within CSS
nsCOMPtr<nsIAtom> prefix = do_GetAtom(holdIdent);
mNameSpace->FindNameSpaceID(prefix, &nameSpaceID);
} // else, no declared namespaces
if (kNameSpaceID_Unknown == nameSpaceID) { // unknown prefix, dump it
REPORT_UNEXPECTED(NS_LITERAL_STRING("Unknown namespace prefix '") +
holdIdent + NS_LITERAL_STRING("'."));
return PR_FALSE;
}
attr.AppendInt(nameSpaceID, 10);
attr.Append(PRUnichar('|'));
if (! GetToken(aErrorCode, PR_FALSE)) {
REPORT_UNEXPECTED_EOF(NS_LITERAL_STRING("attribute name"));
return PR_FALSE;
}
if (eCSSToken_Ident == mToken.mType) {
if (mCaseSensitive) {
attr.Append(mToken.mIdent);
} else {
nsAutoString buffer;
ToLowerCase(mToken.mIdent, buffer);
attr.Append(buffer);
}
}
else {
REPORT_UNEXPECTED_TOKEN(
NS_LITERAL_STRING("Expected attribute name but found"));
UngetToken();
return PR_FALSE;
}
}
else { // no namespace
if (mCaseSensitive) {
attr = holdIdent;
}
else {
ToLowerCase(holdIdent, attr);
}
}
}
else if (mToken.IsSymbol('*')) { // namespace wildcard
// Wildcard namespace makes no sense here and is not allowed
REPORT_UNEXPECTED_TOKEN(
NS_LITERAL_STRING("Expected attribute name but found"));
UngetToken();
return PR_FALSE;
}
else if (mToken.IsSymbol('|')) { // explicit NO namespace
if (! GetToken(aErrorCode, PR_FALSE)) {
REPORT_UNEXPECTED_EOF(NS_LITERAL_STRING("attribute name"));
return PR_FALSE;
}
if (eCSSToken_Ident == mToken.mType) {
if (mCaseSensitive) {
attr.Append(mToken.mIdent);
} else {
nsAutoString buffer;
ToLowerCase(mToken.mIdent, buffer);
attr.Append(buffer);
}
}
else {
REPORT_UNEXPECTED_TOKEN(
NS_LITERAL_STRING("Expected attribute name but found"));
UngetToken();
return PR_FALSE;
}
}
else {
REPORT_UNEXPECTED_TOKEN(
NS_LITERAL_STRING("Expected attribute name or namespace but found"));
UngetToken();
return PR_FALSE;
}
if (ExpectSymbol(aErrorCode, ')', PR_TRUE)) {
aValue.SetStringValue(attr, eCSSUnit_Attr);
return PR_TRUE;
}
}
}
return PR_FALSE;
}
PRBool CSSParserImpl::ParseURL(nsresult& aErrorCode, nsCSSValue& aValue)
{
if (ExpectSymbol(aErrorCode, '(', PR_FALSE)) {
if (! GetURLToken(aErrorCode, PR_TRUE)) {
return PR_FALSE;
}
nsCSSToken* tk = &mToken;
if ((eCSSToken_String == tk->mType) || (eCSSToken_URL == tk->mType)) {
// Translate url into an absolute url if the url is relative to
// the style sheet.
nsCOMPtr<nsIURI> uri;
NS_NewURI(getter_AddRefs(uri), tk->mIdent, nsnull, mURL);
if (ExpectSymbol(aErrorCode, ')', PR_TRUE)) {
// Set a null value on failure. Most failure cases should be
// NS_ERROR_MALFORMED_URI.
nsCSSValue::URL *url = new nsCSSValue::URL(uri, tk->mIdent.get());
if (!url || !url->mString) {
aErrorCode = NS_ERROR_OUT_OF_MEMORY;
delete url;
return PR_FALSE;
}
aValue.SetURLValue(url);
return PR_TRUE;
}
}
}
return PR_FALSE;
}
PRInt32 CSSParserImpl::ParseChoice(nsresult& aErrorCode, nsCSSValue aValues[],
const nsCSSProperty aPropIDs[], PRInt32 aNumIDs)
{
PRInt32 found = 0;
SetParsingCompoundProperty(PR_TRUE);
PRInt32 loop;
for (loop = 0; loop < aNumIDs; loop++) {
// Try each property parser in order
PRInt32 hadFound = found;
PRInt32 index;
for (index = 0; index < aNumIDs; index++) {
PRInt32 bit = 1 << index;
if ((found & bit) == 0) {
if (ParseSingleValueProperty(aErrorCode, aValues[index], aPropIDs[index])) {
found |= bit;
}
}
}
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 { // more than one value, verify no inherits or initials
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;
}
}
}
}
SetParsingCompoundProperty(PR_FALSE);
return found;
}
void
CSSParserImpl::AppendValue(nsCSSProperty aPropID,
const nsCSSValue& aValue)
{
NS_ASSERTION(0 <= aPropID && aPropID < eCSSProperty_COUNT_no_shorthands,
"property out of range");
NS_ASSERTION(nsCSSProps::kTypeTable[aPropID] == eCSSType_Value,
nsPrintfCString(64, "type error (property=\'%s\')",
nsCSSProps::GetStringValue(aPropID).get()).get());
nsCSSValue& storage =
*NS_STATIC_CAST(nsCSSValue*, mTempData.PropertyAt(aPropID));
storage = aValue;
mTempData.SetPropertyBit(aPropID);
}
/**
* 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.
*/
PRBool CSSParserImpl::ParseBoxProperties(nsresult& aErrorCode,
nsCSSRect& aResult,
const nsCSSProperty aPropIDs[])
{
// Get up to four values for the property
PRInt32 count = 0;
PRInt32 index;
nsCSSRect result;
for (index = 0; index < 4; index++) {
if (! ParseSingleValueProperty(aErrorCode,
result.*(nsCSSRect::sides[index]),
aPropIDs[index])) {
break;
}
count++;
}
if ((count == 0) || (PR_FALSE == ExpectEndProperty(aErrorCode, PR_TRUE))) {
return PR_FALSE;
}
if (1 < count) { // verify no more than single inherit or initial
for (index = 0; index < 4; index++) {
nsCSSUnit unit = (result.*(nsCSSRect::sides[index])).GetUnit();
if (eCSSUnit_Inherit == unit || eCSSUnit_Initial == unit) {
return PR_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;
}
for (index = 0; index < 4; index++) {
mTempData.SetPropertyBit(aPropIDs[index]);
}
aResult = result;
return PR_TRUE;
}
PRBool CSSParserImpl::ParseDirectionalBoxProperty(nsresult& aErrorCode,
nsCSSProperty aProperty,
PRInt32 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(aErrorCode, value, subprops[0]) ||
!ExpectEndProperty(aErrorCode, PR_TRUE))
return PR_FALSE;
AppendValue(subprops[0], value);
nsCSSValue typeVal(aSourceType, eCSSUnit_Enumerated);
AppendValue(subprops[1], typeVal);
AppendValue(subprops[2], typeVal);
aErrorCode = NS_OK;
return PR_TRUE;
}
PRBool CSSParserImpl::ParseProperty(nsresult& aErrorCode,
nsCSSProperty aPropID)
{
switch (aPropID) { // handle shorthand or multiple properties
case eCSSProperty_background:
return ParseBackground(aErrorCode);
case eCSSProperty_background_position:
return ParseBackgroundPosition(aErrorCode);
case eCSSProperty_border:
return ParseBorderSide(aErrorCode, kBorderTopIDs, PR_TRUE);
case eCSSProperty_border_color:
return ParseBorderColor(aErrorCode);
case eCSSProperty_border_spacing:
return ParseBorderSpacing(aErrorCode);
case eCSSProperty_border_style:
return ParseBorderStyle(aErrorCode);
case eCSSProperty_border_bottom:
return ParseBorderSide(aErrorCode, kBorderBottomIDs, PR_FALSE);
case eCSSProperty_border_left:
return ParseBorderSide(aErrorCode, kBorderLeftIDs, PR_FALSE);
case eCSSProperty_border_right:
return ParseBorderSide(aErrorCode, kBorderRightIDs, PR_FALSE);
case eCSSProperty_border_top:
return ParseBorderSide(aErrorCode, kBorderTopIDs, PR_FALSE);
case eCSSProperty_border_bottom_colors:
return ParseBorderColors(aErrorCode,
&mTempData.mMargin.mBorderColors.mBottom,
aPropID);
case eCSSProperty_border_left_colors:
return ParseBorderColors(aErrorCode,
&mTempData.mMargin.mBorderColors.mLeft,
aPropID);
case eCSSProperty_border_right_colors:
return ParseBorderColors(aErrorCode,
&mTempData.mMargin.mBorderColors.mRight,
aPropID);
case eCSSProperty_border_top_colors:
return ParseBorderColors(aErrorCode,
&mTempData.mMargin.mBorderColors.mTop,
aPropID);
case eCSSProperty_border_width:
return ParseBorderWidth(aErrorCode);
case eCSSProperty__moz_border_radius:
return ParseBorderRadius(aErrorCode);
#ifdef ENABLE_OUTLINE
case eCSSProperty__moz_outline_radius:
return ParseOutlineRadius(aErrorCode);
#endif
case eCSSProperty_clip:
return ParseRect(mTempData.mDisplay.mClip, aErrorCode,
eCSSProperty_clip);
case eCSSProperty_content:
return ParseContent(aErrorCode);
case eCSSProperty__moz_counter_increment:
return ParseCounterData(aErrorCode, &mTempData.mContent.mCounterIncrement,
aPropID);
case eCSSProperty__moz_counter_reset:
return ParseCounterData(aErrorCode, &mTempData.mContent.mCounterReset,
aPropID);
case eCSSProperty_cue:
return ParseCue(aErrorCode);
case eCSSProperty_cursor:
return ParseCursor(aErrorCode);
case eCSSProperty_font:
return ParseFont(aErrorCode);
case eCSSProperty_image_region:
return ParseRect(mTempData.mList.mImageRegion, aErrorCode,
eCSSProperty_image_region);
case eCSSProperty_list_style:
return ParseListStyle(aErrorCode);
case eCSSProperty_margin:
return ParseMargin(aErrorCode);
case eCSSProperty_margin_end:
return ParseDirectionalBoxProperty(aErrorCode, eCSSProperty_margin_end,
NS_BOXPROP_SOURCE_LOGICAL);
case eCSSProperty_margin_left:
return ParseDirectionalBoxProperty(aErrorCode, eCSSProperty_margin_left,
NS_BOXPROP_SOURCE_PHYSICAL);
case eCSSProperty_margin_right:
return ParseDirectionalBoxProperty(aErrorCode, eCSSProperty_margin_right,
NS_BOXPROP_SOURCE_PHYSICAL);
case eCSSProperty_margin_start:
return ParseDirectionalBoxProperty(aErrorCode, eCSSProperty_margin_start,
NS_BOXPROP_SOURCE_LOGICAL);
#ifdef ENABLE_OUTLINE
case eCSSProperty__moz_outline:
return ParseOutline(aErrorCode);
#endif
case eCSSProperty_padding:
return ParsePadding(aErrorCode);
case eCSSProperty_padding_end:
return ParseDirectionalBoxProperty(aErrorCode, eCSSProperty_padding_end,
NS_BOXPROP_SOURCE_LOGICAL);
case eCSSProperty_padding_left:
return ParseDirectionalBoxProperty(aErrorCode, eCSSProperty_padding_left,
NS_BOXPROP_SOURCE_PHYSICAL);
case eCSSProperty_padding_right:
return ParseDirectionalBoxProperty(aErrorCode, eCSSProperty_padding_right,
NS_BOXPROP_SOURCE_PHYSICAL);
case eCSSProperty_padding_start:
return ParseDirectionalBoxProperty(aErrorCode, eCSSProperty_padding_start,
NS_BOXPROP_SOURCE_LOGICAL);
case eCSSProperty_pause:
return ParsePause(aErrorCode);
case eCSSProperty_play_during:
return ParsePlayDuring(aErrorCode);
case eCSSProperty_quotes:
return ParseQuotes(aErrorCode);
case eCSSProperty_size:
return ParseSize(aErrorCode);
case eCSSProperty_text_shadow:
return ParseTextShadow(aErrorCode);
// Strip out properties we use internally. These properties are used
// by compound property parsing routines (e.g. "background-position").
case eCSSProperty_background_x_position:
case eCSSProperty_background_y_position:
case eCSSProperty_border_x_spacing:
case eCSSProperty_border_y_spacing:
case eCSSProperty_play_during_flags:
case eCSSProperty_play_during_uri:
case eCSSProperty_size_height:
case eCSSProperty_size_width:
case eCSSProperty_margin_end_value:
case eCSSProperty_margin_left_value:
case eCSSProperty_margin_right_value:
case eCSSProperty_margin_start_value:
case eCSSProperty_margin_left_ltr_source:
case eCSSProperty_margin_left_rtl_source:
case eCSSProperty_margin_right_ltr_source:
case eCSSProperty_margin_right_rtl_source:
case eCSSProperty_padding_end_value:
case eCSSProperty_padding_left_value:
case eCSSProperty_padding_right_value:
case eCSSProperty_padding_start_value:
case eCSSProperty_padding_left_ltr_source:
case eCSSProperty_padding_left_rtl_source:
case eCSSProperty_padding_right_ltr_source:
case eCSSProperty_padding_right_rtl_source:
// The user can't use these
REPORT_UNEXPECTED(NS_LITERAL_STRING("Attempt to use inaccessible property"));
return PR_FALSE;
default: // must be single property
{
nsCSSValue value;
if (ParseSingleValueProperty(aErrorCode, value, aPropID)) {
if (ExpectEndProperty(aErrorCode, PR_TRUE)) {
AppendValue(aPropID, value);
aErrorCode = NS_OK;
return PR_TRUE;
}
// XXX Report errors?
}
// XXX Report errors?
}
}
return PR_FALSE;
}
// Bits used in determining which background position info we have
#define BG_CENTER 0x01
#define BG_TOP 0x02
#define BG_BOTTOM 0x04
#define BG_LEFT 0x08
#define BG_RIGHT 0x10
#define BG_CTB (BG_CENTER | BG_TOP | BG_BOTTOM)
#define BG_CLR (BG_CENTER | BG_LEFT | BG_RIGHT)
// Note: Don't change this table unless you update
// parseBackgroundPosition!
static const PRInt32 kBackgroundXYPositionKTable[] = {
eCSSKeyword_center, BG_CENTER,
eCSSKeyword_top, BG_TOP,
eCSSKeyword_bottom, BG_BOTTOM,
eCSSKeyword_left, BG_LEFT,
eCSSKeyword_right, BG_RIGHT,
-1,
};
PRBool CSSParserImpl::ParseSingleValueProperty(nsresult& aErrorCode,
nsCSSValue& aValue,
nsCSSProperty aPropID)
{
switch (aPropID) {
case eCSSProperty_UNKNOWN:
case eCSSProperty_background:
case eCSSProperty_background_position:
case eCSSProperty_border:
case eCSSProperty_border_color:
case eCSSProperty_border_bottom_colors:
case eCSSProperty_border_left_colors:
case eCSSProperty_border_right_colors:
case eCSSProperty_border_top_colors:
case eCSSProperty_border_spacing:
case eCSSProperty_border_style:
case eCSSProperty_border_bottom:
case eCSSProperty_border_left:
case eCSSProperty_border_right:
case eCSSProperty_border_top:
case eCSSProperty_border_width:
case eCSSProperty__moz_border_radius:
case eCSSProperty_clip:
case eCSSProperty_content:
case eCSSProperty__moz_counter_increment:
case eCSSProperty__moz_counter_reset:
case eCSSProperty_cue:
case eCSSProperty_cursor:
case eCSSProperty_font:
case eCSSProperty_image_region:
case eCSSProperty_list_style:
case eCSSProperty_margin:
case eCSSProperty_margin_end:
case eCSSProperty_margin_left:
case eCSSProperty_margin_right:
case eCSSProperty_margin_start:
#ifdef ENABLE_OUTLINE
case eCSSProperty__moz_outline:
case eCSSProperty__moz_outline_radius:
#endif
case eCSSProperty_padding:
case eCSSProperty_padding_end:
case eCSSProperty_padding_left:
case eCSSProperty_padding_right:
case eCSSProperty_padding_start:
case eCSSProperty_pause:
case eCSSProperty_play_during:
case eCSSProperty_quotes:
case eCSSProperty_size:
case eCSSProperty_text_shadow:
case eCSSProperty_COUNT:
NS_ERROR("not a single value property");
return PR_FALSE;
case eCSSProperty_border_x_spacing:
case eCSSProperty_border_y_spacing:
case eCSSProperty_play_during_flags:
case eCSSProperty_play_during_uri:
case eCSSProperty_size_height:
case eCSSProperty_size_width:
case eCSSProperty_margin_left_ltr_source:
case eCSSProperty_margin_left_rtl_source:
case eCSSProperty_margin_right_ltr_source:
case eCSSProperty_margin_right_rtl_source:
case eCSSProperty_padding_left_ltr_source:
case eCSSProperty_padding_left_rtl_source:
case eCSSProperty_padding_right_ltr_source:
case eCSSProperty_padding_right_rtl_source:
NS_ERROR("not currently parsed here");
return PR_FALSE;
case eCSSProperty_appearance:
return ParseVariant(aErrorCode, aValue, VARIANT_HK,
nsCSSProps::kAppearanceKTable);
case eCSSProperty_azimuth:
return ParseAzimuth(aErrorCode, aValue);
case eCSSProperty_background_attachment:
return ParseVariant(aErrorCode, aValue, VARIANT_HK,
nsCSSProps::kBackgroundAttachmentKTable);
case eCSSProperty__moz_background_clip:
return ParseVariant(aErrorCode, aValue, VARIANT_HK,
nsCSSProps::kBackgroundClipKTable);
case eCSSProperty_background_color:
return ParseVariant(aErrorCode, aValue, VARIANT_HCK,
nsCSSProps::kBackgroundColorKTable);
case eCSSProperty_background_image:
return ParseVariant(aErrorCode, aValue, VARIANT_HUO, nsnull);
case eCSSProperty__moz_background_inline_policy:
return ParseVariant(aErrorCode, aValue, VARIANT_HK,
nsCSSProps::kBackgroundInlinePolicyKTable);
case eCSSProperty__moz_background_origin:
return ParseVariant(aErrorCode, aValue, VARIANT_HK,
nsCSSProps::kBackgroundOriginKTable);
case eCSSProperty_background_repeat:
return ParseVariant(aErrorCode, aValue, VARIANT_HK,
nsCSSProps::kBackgroundRepeatKTable);
case eCSSProperty_background_x_position: // for internal use
case eCSSProperty_background_y_position: // for internal use
return ParseVariant(aErrorCode, aValue, VARIANT_HKLP,
kBackgroundXYPositionKTable);
case eCSSProperty_binding:
return ParseVariant(aErrorCode, aValue, VARIANT_HUO, nsnull);
case eCSSProperty_border_collapse:
return ParseVariant(aErrorCode, aValue, VARIANT_HK,
nsCSSProps::kBorderCollapseKTable);
case eCSSProperty_border_bottom_color:
case eCSSProperty_border_left_color:
case eCSSProperty_border_right_color:
case eCSSProperty_border_top_color:
return ParseVariant(aErrorCode, aValue, VARIANT_HCK,
nsCSSProps::kBorderColorKTable);
case eCSSProperty_border_bottom_style:
case eCSSProperty_border_left_style:
case eCSSProperty_border_right_style:
case eCSSProperty_border_top_style:
return ParseVariant(aErrorCode, aValue, VARIANT_HOK,
nsCSSProps::kBorderStyleKTable);
case eCSSProperty_border_bottom_width:
case eCSSProperty_border_left_width:
case eCSSProperty_border_right_width:
case eCSSProperty_border_top_width:
return ParsePositiveVariant(aErrorCode, aValue, VARIANT_HKL,
nsCSSProps::kBorderWidthKTable);
case eCSSProperty__moz_border_radius_topLeft:
case eCSSProperty__moz_border_radius_topRight:
case eCSSProperty__moz_border_radius_bottomRight:
case eCSSProperty__moz_border_radius_bottomLeft:
return ParseVariant(aErrorCode, aValue, VARIANT_HLP, nsnull);
case eCSSProperty__moz_column_count:
return ParsePositiveVariant(aErrorCode, aValue, VARIANT_AHI, nsnull);
case eCSSProperty__moz_column_width:
return ParseVariant(aErrorCode, aValue, VARIANT_AHL, nsnull);
#ifdef ENABLE_OUTLINE
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 ParseVariant(aErrorCode, aValue, VARIANT_HLP, nsnull);
#endif
case eCSSProperty_bottom:
case eCSSProperty_top:
case eCSSProperty_left:
case eCSSProperty_right:
return ParseVariant(aErrorCode, aValue, VARIANT_AHLP, nsnull);
case eCSSProperty_box_align:
return ParseVariant(aErrorCode, aValue, VARIANT_HK,
nsCSSProps::kBoxAlignKTable);
case eCSSProperty_box_direction:
return ParseVariant(aErrorCode, aValue, VARIANT_HK,
nsCSSProps::kBoxDirectionKTable);
case eCSSProperty_box_flex:
return ParseVariant(aErrorCode, aValue, VARIANT_HN, nsnull);
case eCSSProperty_box_orient:
return ParseVariant(aErrorCode, aValue, VARIANT_HK,
nsCSSProps::kBoxOrientKTable);
case eCSSProperty_box_pack:
return ParseVariant(aErrorCode, aValue, VARIANT_HK,
nsCSSProps::kBoxPackKTable);
case eCSSProperty_box_ordinal_group:
return ParseVariant(aErrorCode, aValue, VARIANT_INTEGER, nsnull);
#ifdef MOZ_SVG
case eCSSProperty_dominant_baseline:
return ParseVariant(aErrorCode, aValue, VARIANT_AHK,
nsCSSProps::kDominantBaselineKTable);
case eCSSProperty_fill:
return ParseVariant(aErrorCode, aValue, VARIANT_HC | VARIANT_NONE,
nsnull);
case eCSSProperty_fill_opacity:
return ParseVariant(aErrorCode, aValue, VARIANT_HN,
nsnull);
case eCSSProperty_fill_rule:
return ParseVariant(aErrorCode, aValue, VARIANT_HK,
nsCSSProps::kFillRuleKTable);
case eCSSProperty_pointer_events:
return ParseVariant(aErrorCode, aValue, VARIANT_HK,
nsCSSProps::kPointerEventsKTable);
case eCSSProperty_shape_rendering:
return ParseVariant(aErrorCode, aValue, VARIANT_AHK,
nsCSSProps::kShapeRenderingKTable);
case eCSSProperty_stroke:
return ParseVariant(aErrorCode, aValue, VARIANT_HC | VARIANT_NONE,
nsnull);
case eCSSProperty_stroke_dasharray:
return ParseVariant(aErrorCode, aValue, VARIANT_HOS,
nsnull); // XXX parse into new CSS value type, not string
case eCSSProperty_stroke_dashoffset:
return ParseVariant(aErrorCode, aValue, VARIANT_HLPN,
nsnull);
case eCSSProperty_stroke_linecap:
return ParseVariant(aErrorCode, aValue, VARIANT_HK,
nsCSSProps::kStrokeLinecapKTable);
case eCSSProperty_stroke_linejoin:
return ParseVariant(aErrorCode, aValue, VARIANT_HK,
nsCSSProps::kStrokeLinejoinKTable);
case eCSSProperty_stroke_miterlimit:
return ParsePositiveVariant(aErrorCode, aValue, VARIANT_HN,
nsnull); // XXX value > 1
case eCSSProperty_stroke_opacity:
return ParseVariant(aErrorCode, aValue, VARIANT_HN,
nsnull);
case eCSSProperty_stroke_width:
return ParsePositiveVariant(aErrorCode, aValue, VARIANT_HLPN,
nsnull);
case eCSSProperty_text_anchor:
return ParseVariant(aErrorCode, aValue, VARIANT_HK,
nsCSSProps::kTextAnchorKTable);
case eCSSProperty_text_rendering:
return ParseVariant(aErrorCode, aValue, VARIANT_AHK,
nsCSSProps::kTextRenderingKTable);
#endif
case eCSSProperty_box_sizing:
return ParseVariant(aErrorCode, aValue, VARIANT_HK,
nsCSSProps::kBoxSizingKTable);
case eCSSProperty_height:
case eCSSProperty_width:
return ParsePositiveVariant(aErrorCode, aValue, VARIANT_AHLP, nsnull);
case eCSSProperty_force_broken_image_icon:
return ParsePositiveVariant(aErrorCode, aValue, VARIANT_INTEGER, nsnull);
case eCSSProperty_caption_side:
return ParseVariant(aErrorCode, aValue, VARIANT_HK,
nsCSSProps::kCaptionSideKTable);
case eCSSProperty_clear:
return ParseVariant(aErrorCode, aValue, VARIANT_HOK,
nsCSSProps::kClearKTable);
case eCSSProperty_color:
return ParseVariant(aErrorCode, aValue, VARIANT_HC, nsnull);
case eCSSProperty_cue_after:
case eCSSProperty_cue_before:
return ParseVariant(aErrorCode, aValue, VARIANT_HUO, nsnull);
case eCSSProperty_direction:
return ParseVariant(aErrorCode, aValue, VARIANT_HK,
nsCSSProps::kDirectionKTable);
case eCSSProperty_display:
if (ParseVariant(aErrorCode, aValue, VARIANT_HOK, nsCSSProps::kDisplayKTable)) {
if (aValue.GetUnit() == eCSSUnit_Enumerated) {
switch (aValue.GetIntValue()) {
case NS_STYLE_DISPLAY_MARKER: // bug 2055
case NS_STYLE_DISPLAY_RUN_IN: // bug 2056
case NS_STYLE_DISPLAY_COMPACT: // bug 14983
case NS_STYLE_DISPLAY_INLINE_TABLE: // bug 18218
return PR_FALSE;
}
}
return PR_TRUE;
}
return PR_FALSE;
case eCSSProperty_elevation:
return ParseVariant(aErrorCode, aValue, VARIANT_HK | VARIANT_ANGLE,
nsCSSProps::kElevationKTable);
case eCSSProperty_empty_cells:
return ParseVariant(aErrorCode, aValue, VARIANT_HK,
nsCSSProps::kEmptyCellsKTable);
case eCSSProperty_float:
return ParseVariant(aErrorCode, aValue, VARIANT_HOK,
nsCSSProps::kFloatKTable);
case eCSSProperty_float_edge:
return ParseVariant(aErrorCode, aValue, VARIANT_HK,
nsCSSProps::kFloatEdgeKTable);
case eCSSProperty_font_family:
return ParseFamily(aErrorCode, aValue);
case eCSSProperty_font_size:
return ParsePositiveVariant(aErrorCode, aValue, VARIANT_HKLP,
nsCSSProps::kFontSizeKTable);
case eCSSProperty_font_size_adjust:
return ParseVariant(aErrorCode, aValue, VARIANT_HON,
nsnull);
case eCSSProperty_font_stretch:
return ParseVariant(aErrorCode, aValue, VARIANT_HMK,
nsCSSProps::kFontStretchKTable);
case eCSSProperty_font_style:
return ParseVariant(aErrorCode, aValue, VARIANT_HMK,
nsCSSProps::kFontStyleKTable);
case eCSSProperty_font_variant:
return ParseVariant(aErrorCode, aValue, VARIANT_HMK,
nsCSSProps::kFontVariantKTable);
case eCSSProperty_font_weight:
return ParseFontWeight(aErrorCode, aValue);
case eCSSProperty_letter_spacing:
case eCSSProperty_word_spacing:
return ParseVariant(aErrorCode, aValue, VARIANT_HL | VARIANT_NORMAL, nsnull);
case eCSSProperty_key_equivalent:
return ParseVariant(aErrorCode, aValue, VARIANT_HOK,
nsCSSProps::kKeyEquivalentKTable);
case eCSSProperty_line_height:
return ParsePositiveVariant(aErrorCode, aValue, VARIANT_HLPN | VARIANT_NORMAL, nsnull);
case eCSSProperty_list_style_image:
return ParseVariant(aErrorCode, aValue, VARIANT_HUO, nsnull);
case eCSSProperty_list_style_position:
return ParseVariant(aErrorCode, aValue, VARIANT_HK, nsCSSProps::kListStylePositionKTable);
case eCSSProperty_list_style_type:
return ParseVariant(aErrorCode, aValue, VARIANT_HOK, nsCSSProps::kListStyleKTable);
case eCSSProperty_margin_bottom:
case eCSSProperty_margin_end_value: // for internal use
case eCSSProperty_margin_left_value: // for internal use
case eCSSProperty_margin_right_value: // for internal use
case eCSSProperty_margin_start_value: // for internal use
case eCSSProperty_margin_top:
return ParseVariant(aErrorCode, aValue, VARIANT_AHLP, nsnull);
case eCSSProperty_marker_offset:
return ParseVariant(aErrorCode, aValue, VARIANT_AHL, nsnull);
case eCSSProperty_marks:
return ParseMarks(aErrorCode, aValue);
case eCSSProperty_max_height:
case eCSSProperty_max_width:
return ParsePositiveVariant(aErrorCode, aValue, VARIANT_HLPO, nsnull);
case eCSSProperty_min_height:
case eCSSProperty_min_width:
return ParsePositiveVariant(aErrorCode, aValue, VARIANT_HLP, nsnull);
case eCSSProperty_opacity:
return ParseVariant(aErrorCode, aValue, VARIANT_HN, nsnull);
case eCSSProperty_orphans:
case eCSSProperty_widows:
return ParseVariant(aErrorCode, aValue, VARIANT_HI, nsnull);
#ifdef ENABLE_OUTLINE
case eCSSProperty__moz_outline_color:
return ParseVariant(aErrorCode, aValue, VARIANT_HCK,
nsCSSProps::kOutlineColorKTable);
case eCSSProperty__moz_outline_style:
return ParseVariant(aErrorCode, aValue, VARIANT_HOK,
nsCSSProps::kBorderStyleKTable);
case eCSSProperty__moz_outline_width:
return ParseVariant(aErrorCode, aValue, VARIANT_HKL,
nsCSSProps::kBorderWidthKTable);
#endif
case eCSSProperty_overflow:
return ParseVariant(aErrorCode, aValue, VARIANT_AHK,
nsCSSProps::kOverflowKTable);
case eCSSProperty_padding_bottom:
case eCSSProperty_padding_end_value: // for internal use
case eCSSProperty_padding_left_value: // for internal use
case eCSSProperty_padding_right_value: // for internal use
case eCSSProperty_padding_start_value: // for internal use
case eCSSProperty_padding_top:
return ParsePositiveVariant(aErrorCode, aValue, VARIANT_HLP, nsnull);
case eCSSProperty_page:
return ParseVariant(aErrorCode, aValue, VARIANT_AUTO | VARIANT_IDENTIFIER, nsnull);
case eCSSProperty_page_break_after:
case eCSSProperty_page_break_before:
return ParseVariant(aErrorCode, aValue, VARIANT_AHK,
nsCSSProps::kPageBreakKTable);
case eCSSProperty_page_break_inside:
return ParseVariant(aErrorCode, aValue, VARIANT_AHK,
nsCSSProps::kPageBreakInsideKTable);
case eCSSProperty_pause_after:
case eCSSProperty_pause_before:
return ParseVariant(aErrorCode, aValue, VARIANT_HTP, nsnull);
case eCSSProperty_pitch:
return ParseVariant(aErrorCode, aValue, VARIANT_HKF, nsCSSProps::kPitchKTable);
case eCSSProperty_pitch_range:
return ParseVariant(aErrorCode, aValue, VARIANT_HN, nsnull);
case eCSSProperty_position:
return ParseVariant(aErrorCode, aValue, VARIANT_HK, nsCSSProps::kPositionKTable);
case eCSSProperty_richness:
return ParseVariant(aErrorCode, aValue, VARIANT_HN, nsnull);
case eCSSProperty_speak:
return ParseVariant(aErrorCode, aValue, VARIANT_HMK | VARIANT_NONE,
nsCSSProps::kSpeakKTable);
case eCSSProperty_speak_header:
return ParseVariant(aErrorCode, aValue, VARIANT_HK,
nsCSSProps::kSpeakHeaderKTable);
case eCSSProperty_speak_numeral:
return ParseVariant(aErrorCode, aValue, VARIANT_HK,
nsCSSProps::kSpeakNumeralKTable);
case eCSSProperty_speak_punctuation:
return ParseVariant(aErrorCode, aValue, VARIANT_HK,
nsCSSProps::kSpeakPunctuationKTable);
case eCSSProperty_speech_rate:
return ParseVariant(aErrorCode, aValue, VARIANT_HN | VARIANT_KEYWORD,
nsCSSProps::kSpeechRateKTable);
case eCSSProperty_stress:
return ParseVariant(aErrorCode, aValue, VARIANT_HN, nsnull);
case eCSSProperty_table_layout:
return ParseVariant(aErrorCode, aValue, VARIANT_AHK,
nsCSSProps::kTableLayoutKTable);
case eCSSProperty_text_align:
// When we support aligning on a string, we can parse text-align
// as a string....
return ParseVariant(aErrorCode, aValue, VARIANT_HK /* | VARIANT_STRING */,
nsCSSProps::kTextAlignKTable);
case eCSSProperty_text_decoration:
return ParseTextDecoration(aErrorCode, aValue);
case eCSSProperty_text_indent:
return ParseVariant(aErrorCode, aValue, VARIANT_HLP, nsnull);
case eCSSProperty_text_transform:
return ParseVariant(aErrorCode, aValue, VARIANT_HOK,
nsCSSProps::kTextTransformKTable);
case eCSSProperty_unicode_bidi:
return ParseVariant(aErrorCode, aValue, VARIANT_HMK,
nsCSSProps::kUnicodeBidiKTable);
case eCSSProperty_user_focus:
return ParseVariant(aErrorCode, aValue, VARIANT_HMK | VARIANT_NONE,
nsCSSProps::kUserFocusKTable);
case eCSSProperty_user_input:
return ParseVariant(aErrorCode, aValue, VARIANT_AHK | VARIANT_NONE,
nsCSSProps::kUserInputKTable);
case eCSSProperty_user_modify:
return ParseVariant(aErrorCode, aValue, VARIANT_HK,
nsCSSProps::kUserModifyKTable);
case eCSSProperty_user_select:
return ParseVariant(aErrorCode, aValue, VARIANT_HOK,
nsCSSProps::kUserSelectKTable);
case eCSSProperty_vertical_align:
return ParseVariant(aErrorCode, aValue, VARIANT_HKLP,
nsCSSProps::kVerticalAlignKTable);
case eCSSProperty_visibility:
return ParseVariant(aErrorCode, aValue, VARIANT_HK,
nsCSSProps::kVisibilityKTable);
case eCSSProperty_voice_family:
return ParseFamily(aErrorCode, aValue);
case eCSSProperty_volume:
return ParseVariant(aErrorCode, aValue, VARIANT_HPN | VARIANT_KEYWORD,
nsCSSProps::kVolumeKTable);
case eCSSProperty_white_space:
return ParseVariant(aErrorCode, aValue, VARIANT_HMK,
nsCSSProps::kWhitespaceKTable);
case eCSSProperty_z_index:
return ParseVariant(aErrorCode, aValue, VARIANT_AHI, nsnull);
}
// explicitly do NOT have a default case to let the compiler
// help find missing properties
return PR_FALSE;
}
PRBool CSSParserImpl::ParseAzimuth(nsresult& aErrorCode, nsCSSValue& aValue)
{
if (ParseVariant(aErrorCode, aValue, VARIANT_HK | VARIANT_ANGLE,
nsCSSProps::kAzimuthKTable)) {
if (eCSSUnit_Enumerated == aValue.GetUnit()) {
PRInt32 intValue = aValue.GetIntValue();
if ((NS_STYLE_AZIMUTH_LEFT_SIDE <= intValue) &&
(intValue <= NS_STYLE_AZIMUTH_BEHIND)) { // look for optional modifier
nsCSSValue modifier;
if (ParseEnum(aErrorCode, modifier, nsCSSProps::kAzimuthKTable)) {
PRInt32 enumValue = modifier.GetIntValue();
if (((intValue == NS_STYLE_AZIMUTH_BEHIND) &&
(NS_STYLE_AZIMUTH_LEFT_SIDE <= enumValue) && (enumValue <= NS_STYLE_AZIMUTH_RIGHT_SIDE)) ||
((enumValue == NS_STYLE_AZIMUTH_BEHIND) &&
(NS_STYLE_AZIMUTH_LEFT_SIDE <= intValue) && (intValue <= NS_STYLE_AZIMUTH_RIGHT_SIDE))) {
aValue.SetIntValue(intValue | enumValue, eCSSUnit_Enumerated);
return PR_TRUE;
}
// Put the unknown identifier back and return
UngetToken();
return PR_FALSE;
}
}
}
return PR_TRUE;
}
return PR_FALSE;
}
static nsCSSValue
BackgroundPositionMaskToCSSValue(PRInt32 aMask, PRBool isX)
{
PRInt32 pct = 50;
if (isX) {
if (aMask & BG_LEFT) {
pct = 0;
}
else if (aMask & BG_RIGHT) {
pct = 100;
}
}
else {
if (aMask & BG_TOP) {
pct = 0;
}
else if (aMask & BG_BOTTOM) {
pct = 100;
}
}
return nsCSSValue(pct, eCSSUnit_Enumerated);
}
PRBool CSSParserImpl::ParseBackground(nsresult& aErrorCode)
{
const PRInt32 numProps = 6;
static const nsCSSProperty kBackgroundIDs[numProps] = {
eCSSProperty_background_color,
eCSSProperty_background_image,
eCSSProperty_background_repeat,
eCSSProperty_background_attachment,
eCSSProperty_background_x_position,
eCSSProperty_background_y_position
};
nsCSSValue values[numProps];
PRInt32 found = ParseChoice(aErrorCode, values, kBackgroundIDs, numProps);
if ((found < 1) || (PR_FALSE == ExpectEndProperty(aErrorCode, PR_TRUE))) {
return PR_FALSE;
}
if (0 != (found & 0x30)) { // found one or more position values, validate them
if (0 == (found & 0x20)) {
if (eCSSUnit_Enumerated == values[4].GetUnit()) {
PRInt32 mask = values[4].GetIntValue();
values[4] = BackgroundPositionMaskToCSSValue(mask, PR_TRUE);
values[5] = BackgroundPositionMaskToCSSValue(mask, PR_FALSE);
}
else {
values[5].SetPercentValue(0.5f);
}
}
else { // both x & y values
nsCSSUnit xUnit = values[4].GetUnit();
nsCSSUnit yUnit = values[5].GetUnit();
if (eCSSUnit_Enumerated == xUnit) {
PRInt32 xValue = values[4].GetIntValue();
if (eCSSUnit_Enumerated == yUnit) {
PRInt32 yValue = values[5].GetIntValue();
if (0 != (xValue & (BG_LEFT | BG_RIGHT)) && // x is really an x value
0 != (yValue & (BG_LEFT | BG_RIGHT))) { // y is also an x value
return PR_FALSE;
}
if (0 != (xValue & (BG_TOP | BG_BOTTOM)) && // x is really an y value
0 != (yValue & (BG_TOP | BG_BOTTOM))) { // y is also an y value
return PR_FALSE;
}
if (0 != (xValue & (BG_TOP | BG_BOTTOM)) || // x is really a y value
0 != (yValue & (BG_LEFT | BG_RIGHT))) { // or y is really an x value
PRInt32 holdXValue = xValue;
xValue = yValue;
yValue = holdXValue;
}
NS_ASSERTION(xValue & BG_CLR, "bad x value");
NS_ASSERTION(yValue & BG_CTB, "bad y value");
values[4] = BackgroundPositionMaskToCSSValue(xValue, PR_TRUE);
values[5] = BackgroundPositionMaskToCSSValue(yValue, PR_FALSE);
}
else {
if (!(xValue & BG_CLR)) {
// The first keyword can only be 'center', 'left', or 'right'
return PR_FALSE;
}
values[4] = BackgroundPositionMaskToCSSValue(xValue, PR_TRUE);
}
}
else {
if (eCSSUnit_Enumerated == yUnit) {
PRInt32 yValue = values[5].GetIntValue();
if (!(yValue & BG_CTB)) {
// The second keyword can only be 'center', 'top', or 'bottom'
return PR_FALSE;
}
values[5] = BackgroundPositionMaskToCSSValue(yValue, PR_FALSE);
}
}
}
}
// Provide missing values
if ((found & 0x01) == 0) {
values[0].SetIntValue(NS_STYLE_BG_COLOR_TRANSPARENT, eCSSUnit_Enumerated);
}
if ((found & 0x02) == 0) {
values[1].SetNoneValue();
}
if ((found & 0x04) == 0) {
values[2].SetIntValue(NS_STYLE_BG_REPEAT_XY, eCSSUnit_Enumerated);
}
if ((found & 0x08) == 0) {
values[3].SetIntValue(NS_STYLE_BG_ATTACHMENT_SCROLL, eCSSUnit_Enumerated);
}
if ((found & 0x30) == 0) {
values[4].SetPercentValue(0.0f);
values[5].SetPercentValue(0.0f);
}
PRInt32 index;
for (index = 0; index < numProps; ++index) {
AppendValue(kBackgroundIDs[index], values[index]);
}
// Background properties not settable from the shorthand get reset to their initial value
static const PRInt32 numResetProps = 3;
static const nsCSSProperty kBackgroundResetIDs[numResetProps] = {
eCSSProperty__moz_background_clip,
eCSSProperty__moz_background_inline_policy,
eCSSProperty__moz_background_origin
};
nsCSSValue initial;
initial.SetInitialValue();
for (index = 0; index < numResetProps; ++index) {
AppendValue(kBackgroundResetIDs[index], initial);
}
return PR_TRUE;
}
PRBool CSSParserImpl::ParseBackgroundPosition(nsresult& aErrorCode)
{
// First try a percentage or a length value
nsCSSValue xValue, yValue;
if (ParseVariant(aErrorCode, xValue, VARIANT_HLP, nsnull)) {
if (eCSSUnit_Inherit == xValue.GetUnit() ||
eCSSUnit_Initial == xValue.GetUnit()) { // both are inherited or both are set to initial
if (ExpectEndProperty(aErrorCode, PR_TRUE)) {
AppendValue(eCSSProperty_background_x_position, xValue);
AppendValue(eCSSProperty_background_y_position, xValue);
return PR_TRUE;
}
return PR_FALSE;
}
// We have one percentage/length. Get the optional second
// percentage/length/keyword.
if (ParseVariant(aErrorCode, yValue, VARIANT_LP, nsnull)) {
// We have two numbers
if (ExpectEndProperty(aErrorCode, PR_TRUE)) {
AppendValue(eCSSProperty_background_x_position, xValue);
AppendValue(eCSSProperty_background_y_position, yValue);
return PR_TRUE;
}
return PR_FALSE;
}
if (ParseEnum(aErrorCode, yValue, kBackgroundXYPositionKTable)) {
PRInt32 yVal = yValue.GetIntValue();
if (!(yVal & BG_CTB)) {
// The second keyword can only be 'center', 'top', or 'bottom'
return PR_FALSE;
}
if (ExpectEndProperty(aErrorCode, PR_TRUE)) {
yValue = BackgroundPositionMaskToCSSValue(yVal, PR_FALSE);
AppendValue(eCSSProperty_background_x_position, xValue);
AppendValue(eCSSProperty_background_y_position, yValue);
return PR_TRUE;
}
return PR_FALSE;
}
// If only one percentage or length value is given, it sets the
// horizontal position only, and the vertical position will be 50%.
if (ExpectEndProperty(aErrorCode, PR_TRUE)) {
AppendValue(eCSSProperty_background_x_position, xValue);
AppendValue(eCSSProperty_background_y_position, nsCSSValue(0.5f, eCSSUnit_Percent));
return PR_TRUE;
}
return PR_FALSE;
}
// 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.
PRInt32 mask = 0;
if (ParseEnum(aErrorCode, xValue, kBackgroundXYPositionKTable)) {
PRInt32 bit = xValue.GetIntValue();
mask |= bit;
if (ParseEnum(aErrorCode, xValue, kBackgroundXYPositionKTable)) {
bit = xValue.GetIntValue();
if (mask & (bit & ~BG_CENTER)) {
// Only the 'center' keyword can be duplicated.
return PR_FALSE;
}
mask |= bit;
}
else {
// Only one keyword. See if we have a length or percentage.
if (ParseVariant(aErrorCode, yValue, VARIANT_LP, nsnull)) {
if (!(mask & BG_CLR)) {
// The first keyword can only be 'center', 'left', or 'right'
return PR_FALSE;
}
if (ExpectEndProperty(aErrorCode, PR_TRUE)) {
xValue = BackgroundPositionMaskToCSSValue(mask, PR_TRUE);
AppendValue(eCSSProperty_background_x_position, xValue);
AppendValue(eCSSProperty_background_y_position, yValue);
return PR_TRUE;
}
return PR_FALSE;
}
}
}
// 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))) {
return PR_FALSE;
}
if (ExpectEndProperty(aErrorCode, PR_TRUE)) {
// Create style values
xValue = BackgroundPositionMaskToCSSValue(mask, PR_TRUE);
yValue = BackgroundPositionMaskToCSSValue(mask, PR_FALSE);
AppendValue(eCSSProperty_background_x_position, xValue);
AppendValue(eCSSProperty_background_y_position, yValue);
return PR_TRUE;
}
return PR_FALSE;
}
// 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,
eCSSProperty_border_bottom_style,
eCSSProperty_border_left_style
};
static const nsCSSProperty kBorderWidthIDs[] = {
eCSSProperty_border_top_width,
eCSSProperty_border_right_width,
eCSSProperty_border_bottom_width,
eCSSProperty_border_left_width
};
static const nsCSSProperty kBorderColorIDs[] = {
eCSSProperty_border_top_color,
eCSSProperty_border_right_color,
eCSSProperty_border_bottom_color,
eCSSProperty_border_left_color
};
static const nsCSSProperty kBorderRadiusIDs[] = {
eCSSProperty__moz_border_radius_topLeft,
eCSSProperty__moz_border_radius_topRight,
eCSSProperty__moz_border_radius_bottomRight,
eCSSProperty__moz_border_radius_bottomLeft
};
static const nsCSSProperty kOutlineRadiusIDs[] = {
eCSSProperty__moz_outline_radius_topLeft,
eCSSProperty__moz_outline_radius_topRight,
eCSSProperty__moz_outline_radius_bottomRight,
eCSSProperty__moz_outline_radius_bottomLeft
};
PRBool CSSParserImpl::ParseBorderColor(nsresult& aErrorCode)
{
return ParseBoxProperties(aErrorCode, mTempData.mMargin.mBorderColor,
kBorderColorIDs);
}
PRBool CSSParserImpl::ParseBorderSpacing(nsresult& aErrorCode)
{
nsCSSValue xValue;
if (ParsePositiveVariant(aErrorCode, xValue, VARIANT_HL, nsnull)) {
if (xValue.IsLengthUnit()) {
// We have one length. Get the optional second length.
nsCSSValue yValue;
if (ParsePositiveVariant(aErrorCode, yValue, VARIANT_LENGTH, nsnull)) {
// We have two numbers
if (ExpectEndProperty(aErrorCode, PR_TRUE)) {
AppendValue(eCSSProperty_border_x_spacing, xValue);
AppendValue(eCSSProperty_border_y_spacing, yValue);
return PR_TRUE;
}
return PR_FALSE;
}
}
// We have one length which is the horizontal spacing. Create a value for
// the vertical spacing which is equal
if (ExpectEndProperty(aErrorCode, PR_TRUE)) {
AppendValue(eCSSProperty_border_x_spacing, xValue);
AppendValue(eCSSProperty_border_y_spacing, xValue);
return PR_TRUE;
}
}
return PR_FALSE;
}
PRBool CSSParserImpl::ParseBorderSide(nsresult& aErrorCode,
const nsCSSProperty aPropIDs[],
PRBool aSetAllSides)
{
const PRInt32 numProps = 3;
nsCSSValue values[numProps];
PRInt32 found = ParseChoice(aErrorCode, values, aPropIDs, numProps);
if ((found < 1) || (PR_FALSE == ExpectEndProperty(aErrorCode, PR_TRUE))) {
return PR_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].SetNoneValue();
}
if ((found & 4) == 0) { // text color will be used
values[2].SetIntValue(NS_STYLE_COLOR_MOZ_USE_TEXT_COLOR, eCSSUnit_Enumerated);
}
if (aSetAllSides) {
// Parsing "border" shorthand; set all four sides to the same thing
for (PRInt32 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]);
}
}
else {
// Just set our one side
for (PRInt32 index = 0; index < numProps; index++) {
AppendValue(aPropIDs[index], values[index]);
}
}
return PR_TRUE;
}
PRBool CSSParserImpl::ParseBorderStyle(nsresult& aErrorCode)
{
return ParseBoxProperties(aErrorCode, mTempData.mMargin.mBorderStyle,
kBorderStyleIDs);
}
PRBool CSSParserImpl::ParseBorderWidth(nsresult& aErrorCode)
{
return ParseBoxProperties(aErrorCode, mTempData.mMargin.mBorderWidth,
kBorderWidthIDs);
}
PRBool CSSParserImpl::ParseBorderRadius(nsresult& aErrorCode)
{
return ParseBoxProperties(aErrorCode, mTempData.mMargin.mBorderRadius,
kBorderRadiusIDs);
}
#ifdef ENABLE_OUTLINE
PRBool CSSParserImpl::ParseOutlineRadius(nsresult& aErrorCode)
{
return ParseBoxProperties(aErrorCode, mTempData.mMargin.mOutlineRadius,
kOutlineRadiusIDs);
}
#endif
PRBool CSSParserImpl::ParseBorderColors(nsresult& aErrorCode,
nsCSSValueList** aResult,
nsCSSProperty aProperty)
{
nsCSSValue value;
if (ParseVariant(aErrorCode, value, VARIANT_HCK|VARIANT_NONE, nsCSSProps::kBorderColorKTable)) {
nsCSSValueList* listHead = new nsCSSValueList();
nsCSSValueList* list = listHead;
if (!list) {
aErrorCode = NS_ERROR_OUT_OF_MEMORY;
return PR_FALSE;
}
list->mValue = value;
while (list) {
if (ExpectEndProperty(aErrorCode, PR_TRUE)) {
mTempData.SetPropertyBit(aProperty);
*aResult = listHead;
aErrorCode = NS_OK;
return PR_TRUE;
}
if (ParseVariant(aErrorCode, value, VARIANT_HCK|VARIANT_NONE, nsCSSProps::kBorderColorKTable)) {
list->mNext = new nsCSSValueList();
list = list->mNext;
if (list)
list->mValue = value;
else
aErrorCode = NS_ERROR_OUT_OF_MEMORY;
}
else
break;
}
delete listHead;
}
return PR_FALSE;
}
PRBool
CSSParserImpl::ParseRect(nsCSSRect& aRect, nsresult& aErrorCode,
nsCSSProperty aPropID)
{
nsCSSRect rect;
PRBool result;
if ((result = DoParseRect(rect, aErrorCode)) &&
rect != aRect) {
aRect = rect;
mTempData.SetPropertyBit(aPropID);
}
return result;
}
PRBool
CSSParserImpl::DoParseRect(nsCSSRect& aRect, nsresult& aErrorCode)
{
if (! GetToken(aErrorCode, PR_TRUE)) {
return PR_FALSE;
}
if (eCSSToken_Ident == mToken.mType) {
nsCSSKeyword keyword = nsCSSKeywords::LookupKeyword(mToken.mIdent);
switch (keyword) {
case eCSSKeyword_auto:
if (ExpectEndProperty(aErrorCode, PR_TRUE)) {
aRect.SetAllSidesTo(nsCSSValue(eCSSUnit_Auto));
return PR_TRUE;
}
break;
case eCSSKeyword_inherit:
if (ExpectEndProperty(aErrorCode, PR_TRUE)) {
aRect.SetAllSidesTo(nsCSSValue(eCSSUnit_Inherit));
return PR_TRUE;
}
break;
case eCSSKeyword__moz_initial:
if (ExpectEndProperty(aErrorCode, PR_TRUE)) {
aRect.SetAllSidesTo(nsCSSValue(eCSSUnit_Initial));
return PR_TRUE;
}
break;
default:
UngetToken();
break;
}
} else if ((eCSSToken_Function == mToken.mType) &&
mToken.mIdent.LowerCaseEqualsLiteral("rect")) {
if (!ExpectSymbol(aErrorCode, '(', PR_TRUE)) {
return PR_FALSE;
}
NS_FOR_CSS_SIDES(side) {
if (! ParseVariant(aErrorCode, aRect.*(nsCSSRect::sides[side]),
VARIANT_AL, nsnull)) {
return PR_FALSE;
}
if (3 != side) {
// skip optional commas between elements
ExpectSymbol(aErrorCode, ',', PR_TRUE);
}
}
if (!ExpectSymbol(aErrorCode, ')', PR_TRUE)) {
return PR_FALSE;
}
if (ExpectEndProperty(aErrorCode, PR_TRUE)) {
return PR_TRUE;
}
} else {
UngetToken();
}
return PR_FALSE;
}
#define VARIANT_CONTENT (VARIANT_STRING | VARIANT_URL | VARIANT_COUNTER | VARIANT_ATTR | \
VARIANT_KEYWORD)
PRBool CSSParserImpl::ParseContent(nsresult& aErrorCode)
{
nsCSSValue value;
if (ParseVariant(aErrorCode, value, VARIANT_CONTENT | VARIANT_INHERIT,
nsCSSProps::kContentKTable)) {
nsCSSValueList* listHead = new nsCSSValueList();
nsCSSValueList* list = listHead;
if (nsnull == list) {
aErrorCode = NS_ERROR_OUT_OF_MEMORY;
return PR_FALSE;
}
list->mValue = value;
while (nsnull != list) {
if (ExpectEndProperty(aErrorCode, PR_TRUE)) {
mTempData.SetPropertyBit(eCSSProperty_content);
mTempData.mContent.mContent = listHead;
aErrorCode = NS_OK;
return PR_TRUE;
}
if (eCSSUnit_Inherit == value.GetUnit() ||
eCSSUnit_Initial == value.GetUnit()) {
// This only matters the first time through the loop.
return PR_FALSE;
}
if (ParseVariant(aErrorCode, value, VARIANT_CONTENT, nsCSSProps::kContentKTable)) {
list->mNext = new nsCSSValueList();
list = list->mNext;
if (nsnull != list) {
list->mValue = value;
}
else {
aErrorCode = NS_ERROR_OUT_OF_MEMORY;
}
}
else {
break;
}
}
delete listHead;
}
return PR_FALSE;
}
PRBool
CSSParserImpl::SetSingleCounterValue(nsCSSCounterData** aResult,
nsresult& aErrorCode,
nsCSSProperty aPropID,
const nsCSSValue& aValue)
{
nsCSSCounterData* dataHead = new nsCSSCounterData();
if (!dataHead) {
aErrorCode = NS_ERROR_OUT_OF_MEMORY;
return PR_FALSE;
}
dataHead->mCounter = aValue;
*aResult = dataHead;
mTempData.SetPropertyBit(aPropID);
return PR_TRUE;
}
PRBool CSSParserImpl::ParseCounterData(nsresult& aErrorCode,
nsCSSCounterData** aResult,
nsCSSProperty aPropID)
{
nsString* ident = NextIdent(aErrorCode);
if (nsnull == ident) {
return PR_FALSE;
}
if (ident->LowerCaseEqualsLiteral("none")) {
if (ExpectEndProperty(aErrorCode, PR_TRUE)) {
return SetSingleCounterValue(aResult, aErrorCode, aPropID,
nsCSSValue(eCSSUnit_None));
}
return PR_FALSE;
}
else if (ident->LowerCaseEqualsLiteral("inherit")) {
if (ExpectEndProperty(aErrorCode, PR_TRUE)) {
return SetSingleCounterValue(aResult, aErrorCode, aPropID,
nsCSSValue(eCSSUnit_Inherit));
}
return PR_FALSE;
}
else if (ident->LowerCaseEqualsLiteral("-moz-initial")) {
if (ExpectEndProperty(aErrorCode, PR_TRUE)) {
return SetSingleCounterValue(aResult, aErrorCode, aPropID,
nsCSSValue(eCSSUnit_Initial));
}
return PR_FALSE;
}
else {
nsCSSCounterData* dataHead = new nsCSSCounterData();
nsCSSCounterData* data = dataHead;
if (nsnull == data) {
aErrorCode = NS_ERROR_OUT_OF_MEMORY;
return PR_FALSE;
}
data->mCounter.SetStringValue(*ident, eCSSUnit_String);
while (nsnull != data) {
if (ExpectEndProperty(aErrorCode, PR_TRUE)) {
mTempData.SetPropertyBit(aPropID);
*aResult = dataHead;
aErrorCode = NS_OK;
return PR_TRUE;
}
if (! GetToken(aErrorCode, PR_TRUE)) {
break;
}
if ((eCSSToken_Number == mToken.mType) && (mToken.mIntegerValid)) {
data->mValue.SetIntValue(mToken.mInteger, eCSSUnit_Integer);
if (ExpectEndProperty(aErrorCode, PR_TRUE)) {
mTempData.SetPropertyBit(aPropID);
*aResult = dataHead;
aErrorCode = NS_OK;
return PR_TRUE;
}
if (! GetToken(aErrorCode, PR_TRUE)) {
break;
}
}
if (eCSSToken_Ident == mToken.mType) {
data->mNext = new nsCSSCounterData();
data = data->mNext;
if (nsnull != data) {
data->mCounter.SetStringValue(mToken.mIdent, eCSSUnit_String);
}
else {
aErrorCode = NS_ERROR_OUT_OF_MEMORY;
}
}
else {
break;
}
}
delete dataHead;
}
return PR_FALSE;
}
PRBool CSSParserImpl::ParseCue(nsresult& aErrorCode)
{
nsCSSValue before;
if (ParseSingleValueProperty(aErrorCode, before, eCSSProperty_cue_before)) {
if (eCSSUnit_URL == before.GetUnit()) {
nsCSSValue after;
if (ParseSingleValueProperty(aErrorCode, after, eCSSProperty_cue_after)) {
if (ExpectEndProperty(aErrorCode, PR_TRUE)) {
AppendValue(eCSSProperty_cue_before, before);
AppendValue(eCSSProperty_cue_after, after);
return PR_TRUE;
}
return PR_FALSE;
}
}
if (ExpectEndProperty(aErrorCode, PR_TRUE)) {
AppendValue(eCSSProperty_cue_before, before);
AppendValue(eCSSProperty_cue_after, before);
return PR_TRUE;
}
}
return PR_FALSE;
}
PRBool CSSParserImpl::ParseCursor(nsresult& aErrorCode)
{
nsCSSValueList *list = nsnull;
for (nsCSSValueList **curp = &list, *cur; ; curp = &cur->mNext) {
cur = *curp = new nsCSSValueList();
if (!cur) {
aErrorCode = NS_ERROR_OUT_OF_MEMORY;
delete list;
return PR_FALSE;
}
if (!ParseVariant(aErrorCode, cur->mValue,
(cur == list) ? VARIANT_AHUK : VARIANT_AUK,
nsCSSProps::kCursorKTable)) {
delete list;
return PR_FALSE;
}
if (cur->mValue.GetUnit() != eCSSUnit_URL)
break;
if (!ExpectSymbol(aErrorCode, ',', PR_TRUE)) {
delete list;
return PR_FALSE;
}
}
if (!ExpectEndProperty(aErrorCode, PR_TRUE)) {
delete list;
return PR_FALSE;
}
mTempData.SetPropertyBit(eCSSProperty_cursor);
mTempData.mUserInterface.mCursor = list;
aErrorCode = NS_OK;
return PR_TRUE;
}
PRBool CSSParserImpl::ParseFont(nsresult& aErrorCode)
{
static const nsCSSProperty fontIDs[] = {
eCSSProperty_font_style,
eCSSProperty_font_variant,
eCSSProperty_font_weight
};
nsCSSValue family;
if (ParseVariant(aErrorCode, family, VARIANT_HK, nsCSSProps::kFontKTable)) {
if (ExpectEndProperty(aErrorCode, PR_TRUE)) {
if (eCSSUnit_Inherit == family.GetUnit()) {
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);
}
else {
AppendValue(eCSSProperty_font_family, family); // keyword value overrides everything else
nsCSSValue empty;
AppendValue(eCSSProperty_font_style, empty);
AppendValue(eCSSProperty_font_variant, empty);
AppendValue(eCSSProperty_font_weight, empty);
AppendValue(eCSSProperty_font_size, empty);
AppendValue(eCSSProperty_line_height, empty);
AppendValue(eCSSProperty_font_stretch, empty);
AppendValue(eCSSProperty_font_size_adjust, empty);
}
return PR_TRUE;
}
return PR_FALSE;
}
// Get optional font-style, font-variant and font-weight (in any order)
const PRInt32 numProps = 3;
nsCSSValue values[numProps];
PRInt32 found = ParseChoice(aErrorCode, values, fontIDs, numProps);
if ((found < 0) || (eCSSUnit_Inherit == values[0].GetUnit()) ||
(eCSSUnit_Initial == values[0].GetUnit())) { // illegal data
return PR_FALSE;
}
if ((found & 1) == 0) {
// Provide default font-style
values[0].SetNormalValue();
}
if ((found & 2) == 0) {
// Provide default font-variant
values[1].SetNormalValue();
}
if ((found & 4) == 0) {
// Provide default font-weight
values[2].SetNormalValue();
}
// Get mandatory font-size
nsCSSValue size;
if (! ParseVariant(aErrorCode, size, VARIANT_KEYWORD | VARIANT_LP, nsCSSProps::kFontSizeKTable)) {
return PR_FALSE;
}
// Get optional "/" line-height
nsCSSValue lineHeight;
if (ExpectSymbol(aErrorCode, '/', PR_TRUE)) {
if (! ParsePositiveVariant(aErrorCode, lineHeight,
VARIANT_NUMBER | VARIANT_LP | VARIANT_NORMAL,
nsnull)) {
return PR_FALSE;
}
}
else {
lineHeight.SetNormalValue();
}
// Get final mandatory font-family
if (ParseFamily(aErrorCode, family)) {
if ((eCSSUnit_Inherit != family.GetUnit()) && (eCSSUnit_Initial != family.GetUnit()) &&
ExpectEndProperty(aErrorCode, PR_TRUE)) {
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(eCSSUnit_Normal));
AppendValue(eCSSProperty_font_size_adjust, nsCSSValue(eCSSUnit_None));
return PR_TRUE;
}
}
return PR_FALSE;
}
PRBool CSSParserImpl::ParseFontWeight(nsresult& aErrorCode, nsCSSValue& aValue)
{
if (ParseVariant(aErrorCode, aValue, VARIANT_HMKI, nsCSSProps::kFontWeightKTable)) {
if (eCSSUnit_Integer == aValue.GetUnit()) { // ensure unit value
PRInt32 intValue = aValue.GetIntValue();
if ((100 <= intValue) &&
(intValue <= 900) &&
(0 == (intValue % 100))) {
return PR_TRUE;
} else {
UngetToken();
return PR_FALSE;
}
}
return PR_TRUE;
}
return PR_FALSE;
}
PRBool CSSParserImpl::ParseFamily(nsresult& aErrorCode, nsCSSValue& aValue)
{
nsCSSToken* tk = &mToken;
nsAutoString family;
PRBool firstOne = PR_TRUE;
for (;;) {
if (!GetToken(aErrorCode, PR_TRUE)) {
break;
}
if (eCSSToken_Ident == tk->mType) {
if (firstOne) {
nsCSSKeyword keyword = nsCSSKeywords::LookupKeyword(tk->mIdent);
if (keyword == eCSSKeyword_inherit) {
aValue.SetInheritValue();
return PR_TRUE;
}
else if (keyword == eCSSKeyword__moz_initial) {
aValue.SetInitialValue();
return PR_TRUE;
}
}
else {
family.Append(PRUnichar(','));
}
family.Append(tk->mIdent);
for (;;) {
if (!GetToken(aErrorCode, PR_FALSE)) {
break;
}
if (eCSSToken_Ident == tk->mType) {
family.Append(tk->mIdent);
} else if (eCSSToken_WhiteSpace == tk->mType) {
// Lookahead one token and drop whitespace if we ending the
// font name.
if (!GetToken(aErrorCode, PR_TRUE)) {
break;
}
if (eCSSToken_Ident != tk->mType) {
UngetToken();
break;
}
UngetToken();
family.Append(PRUnichar(' '));
} else {
UngetToken();
break;
}
}
firstOne = PR_FALSE;
} else if (eCSSToken_String == tk->mType) {
if (!firstOne) {
family.Append(PRUnichar(','));
}
family.Append(tk->mSymbol); // replace the quotes
family.Append(tk->mIdent);
family.Append(tk->mSymbol);
firstOne = PR_FALSE;
} else if (eCSSToken_Symbol == tk->mType) {
if (',' != tk->mSymbol) {
UngetToken();
break;
}
} else {
UngetToken();
break;
}
}
if (family.IsEmpty()) {
return PR_FALSE;
}
aValue.SetStringValue(family, eCSSUnit_String);
return PR_TRUE;
}
PRBool CSSParserImpl::ParseListStyle(nsresult& aErrorCode)
{
const PRInt32 numProps = 3;
static const nsCSSProperty listStyleIDs[] = {
eCSSProperty_list_style_type,
eCSSProperty_list_style_position,
eCSSProperty_list_style_image
};
nsCSSValue values[numProps];
PRInt32 index;
PRInt32 found = ParseChoice(aErrorCode, values, listStyleIDs, numProps);
if ((found < 1) || (PR_FALSE == ExpectEndProperty(aErrorCode, PR_TRUE))) {
return PR_FALSE;
}
// Provide default values
if ((found & 1) == 0) {
values[0].SetIntValue(NS_STYLE_LIST_STYLE_DISC, eCSSUnit_Enumerated);
}
if ((found & 2) == 0) {
values[1].SetIntValue(NS_STYLE_LIST_STYLE_POSITION_OUTSIDE, eCSSUnit_Enumerated);
}
if ((found & 4) == 0) {
values[2].SetNoneValue();
}
for (index = 0; index < numProps; index++) {
AppendValue(listStyleIDs[index], values[index]);
}
return PR_TRUE;
}
PRBool CSSParserImpl::ParseMargin(nsresult& aErrorCode)
{
static const nsCSSProperty kMarginSideIDs[] = {
eCSSProperty_margin_top,
eCSSProperty_margin_right_value,
eCSSProperty_margin_bottom,
eCSSProperty_margin_left_value
};
// do this now, in case 4 values weren't specified
mTempData.SetPropertyBit(eCSSProperty_margin_left_ltr_source);
mTempData.SetPropertyBit(eCSSProperty_margin_left_rtl_source);
mTempData.SetPropertyBit(eCSSProperty_margin_right_ltr_source);
mTempData.SetPropertyBit(eCSSProperty_margin_right_rtl_source);
mTempData.mMargin.mMarginLeftLTRSource.SetIntValue(NS_BOXPROP_SOURCE_PHYSICAL, eCSSUnit_Enumerated);
mTempData.mMargin.mMarginLeftRTLSource.SetIntValue(NS_BOXPROP_SOURCE_PHYSICAL, eCSSUnit_Enumerated);
mTempData.mMargin.mMarginRightLTRSource.SetIntValue(NS_BOXPROP_SOURCE_PHYSICAL, eCSSUnit_Enumerated);
mTempData.mMargin.mMarginRightRTLSource.SetIntValue(NS_BOXPROP_SOURCE_PHYSICAL, eCSSUnit_Enumerated);
return ParseBoxProperties(aErrorCode, mTempData.mMargin.mMargin,
kMarginSideIDs);
}
PRBool CSSParserImpl::ParseMarks(nsresult& aErrorCode, nsCSSValue& aValue)
{
if (ParseVariant(aErrorCode, aValue, VARIANT_HOK, nsCSSProps::kPageMarksKTable)) {
if (eCSSUnit_Enumerated == aValue.GetUnit()) {
if (PR_FALSE == ExpectEndProperty(aErrorCode, PR_TRUE)) {
nsCSSValue second;
if (ParseEnum(aErrorCode, second, nsCSSProps::kPageMarksKTable)) {
aValue.SetIntValue(aValue.GetIntValue() | second.GetIntValue(), eCSSUnit_Enumerated);
return PR_TRUE;
}
return PR_FALSE;
}
}
return PR_TRUE;
}
return PR_FALSE;
}
#ifdef ENABLE_OUTLINE
PRBool CSSParserImpl::ParseOutline(nsresult& aErrorCode)
{
const PRInt32 numProps = 3;
static const nsCSSProperty kOutlineIDs[] = {
eCSSProperty__moz_outline_color,
eCSSProperty__moz_outline_style,
eCSSProperty__moz_outline_width
};
nsCSSValue values[numProps];
PRInt32 found = ParseChoice(aErrorCode, values, kOutlineIDs, numProps);
if ((found < 1) || (PR_FALSE == ExpectEndProperty(aErrorCode, PR_TRUE))) {
return PR_FALSE;
}
// Provide default values
if ((found & 1) == 0) {
values[0].SetIntValue(NS_STYLE_COLOR_INVERT, eCSSUnit_Enumerated);
}
if ((found & 2) == 0) {
values[1].SetNoneValue();
}
if ((found & 4) == 0) {
values[2].SetIntValue(NS_STYLE_BORDER_WIDTH_MEDIUM, eCSSUnit_Enumerated);
}
PRInt32 index;
for (index = 0; index < numProps; index++) {
AppendValue(kOutlineIDs[index], values[index]);
}
return PR_TRUE;
}
#endif
PRBool CSSParserImpl::ParsePadding(nsresult& aErrorCode)
{
static const nsCSSProperty kPaddingSideIDs[] = {
eCSSProperty_padding_top,
eCSSProperty_padding_right_value,
eCSSProperty_padding_bottom,
eCSSProperty_padding_left_value
};
// do this now, in case 4 values weren't specified
mTempData.SetPropertyBit(eCSSProperty_padding_left_ltr_source);
mTempData.SetPropertyBit(eCSSProperty_padding_left_rtl_source);
mTempData.SetPropertyBit(eCSSProperty_padding_right_ltr_source);
mTempData.SetPropertyBit(eCSSProperty_padding_right_rtl_source);
mTempData.mMargin.mPaddingLeftLTRSource.SetIntValue(NS_BOXPROP_SOURCE_PHYSICAL, eCSSUnit_Enumerated);
mTempData.mMargin.mPaddingLeftRTLSource.SetIntValue(NS_BOXPROP_SOURCE_PHYSICAL, eCSSUnit_Enumerated);
mTempData.mMargin.mPaddingRightLTRSource.SetIntValue(NS_BOXPROP_SOURCE_PHYSICAL, eCSSUnit_Enumerated);
mTempData.mMargin.mPaddingRightRTLSource.SetIntValue(NS_BOXPROP_SOURCE_PHYSICAL, eCSSUnit_Enumerated);
return ParseBoxProperties(aErrorCode, mTempData.mMargin.mPadding,
kPaddingSideIDs);
}
PRBool CSSParserImpl::ParsePause(nsresult& aErrorCode)
{
nsCSSValue before;
if (ParseSingleValueProperty(aErrorCode, before, eCSSProperty_pause_before)) {
if (eCSSUnit_Inherit != before.GetUnit() && eCSSUnit_Initial != before.GetUnit()) {
nsCSSValue after;
if (ParseSingleValueProperty(aErrorCode, after, eCSSProperty_pause_after)) {
if (ExpectEndProperty(aErrorCode, PR_TRUE)) {
AppendValue(eCSSProperty_pause_before, before);
AppendValue(eCSSProperty_pause_after, after);
return PR_TRUE;
}
return PR_FALSE;
}
}
if (ExpectEndProperty(aErrorCode, PR_TRUE)) {
AppendValue(eCSSProperty_pause_before, before);
AppendValue(eCSSProperty_pause_after, before);
return PR_TRUE;
}
}
return PR_FALSE;
}
PRBool CSSParserImpl::ParsePlayDuring(nsresult& aErrorCode)
{
nsCSSValue playDuring;
nsCSSValue flags;
if (ParseVariant(aErrorCode, playDuring, VARIANT_AHUO, nsnull)) {
if (eCSSUnit_URL == playDuring.GetUnit()) {
if (ParseEnum(aErrorCode, flags, nsCSSProps::kPlayDuringKTable)) {
PRInt32 intValue = flags.GetIntValue();
if (ParseEnum(aErrorCode, flags, nsCSSProps::kPlayDuringKTable)) {
flags.SetIntValue(intValue | flags.GetIntValue(), eCSSUnit_Enumerated);
}
}
}
if (ExpectEndProperty(aErrorCode, PR_TRUE)) {
AppendValue(eCSSProperty_play_during_uri, playDuring);
AppendValue(eCSSProperty_play_during_flags, flags);
return PR_TRUE;
}
}
return PR_FALSE;
}
PRBool CSSParserImpl::ParseQuotes(nsresult& aErrorCode)
{
nsCSSValue open;
if (ParseVariant(aErrorCode, open, VARIANT_HOS, nsnull)) {
if (eCSSUnit_String == open.GetUnit()) {
nsCSSQuotes* quotesHead = new nsCSSQuotes();
nsCSSQuotes* quotes = quotesHead;
if (nsnull == quotes) {
aErrorCode = NS_ERROR_OUT_OF_MEMORY;
return PR_FALSE;
}
quotes->mOpen = open;
while (nsnull != quotes) {
// get mandatory close
if (ParseVariant(aErrorCode, quotes->mClose, VARIANT_STRING, nsnull)) {
if (ExpectEndProperty(aErrorCode, PR_TRUE)) {
mTempData.SetPropertyBit(eCSSProperty_quotes);
mTempData.mContent.mQuotes = quotesHead;
aErrorCode = NS_OK;
return PR_TRUE;
}
// look for another open
if (ParseVariant(aErrorCode, open, VARIANT_STRING, nsnull)) {
quotes->mNext = new nsCSSQuotes();
quotes = quotes->mNext;
if (nsnull != quotes) {
quotes->mOpen = open;
continue;
}
aErrorCode = NS_ERROR_OUT_OF_MEMORY;
}
}
break;
}
delete quotesHead;
return PR_FALSE;
}
if (ExpectEndProperty(aErrorCode, PR_TRUE)) {
nsCSSQuotes* quotesHead = new nsCSSQuotes();
quotesHead->mOpen = open;
mTempData.mContent.mQuotes = quotesHead;
mTempData.SetPropertyBit(eCSSProperty_quotes);
return PR_TRUE;
}
}
return PR_FALSE;
}
PRBool CSSParserImpl::ParseSize(nsresult& aErrorCode)
{
nsCSSValue width;
if (ParseVariant(aErrorCode, width, VARIANT_AHKL, nsCSSProps::kPageSizeKTable)) {
if (width.IsLengthUnit()) {
nsCSSValue height;
if (ParseVariant(aErrorCode, height, VARIANT_LENGTH, nsnull)) {
if (ExpectEndProperty(aErrorCode, PR_TRUE)) {
AppendValue(eCSSProperty_size_width, width);
AppendValue(eCSSProperty_size_height, height);
return PR_TRUE;
}
return PR_FALSE;
}
}
if (ExpectEndProperty(aErrorCode, PR_TRUE)) {
AppendValue(eCSSProperty_size_width, width);
AppendValue(eCSSProperty_size_height, width);
return PR_TRUE;
}
}
return PR_FALSE;
}
PRBool CSSParserImpl::ParseTextDecoration(nsresult& aErrorCode, nsCSSValue& aValue)
{
if (ParseVariant(aErrorCode, aValue, VARIANT_HOK, nsCSSProps::kTextDecorationKTable)) {
if (eCSSUnit_Enumerated == aValue.GetUnit()) { // look for more keywords
PRInt32 intValue = aValue.GetIntValue();
nsCSSValue keyword;
PRInt32 index;
for (index = 0; index < 3; index++) {
if (ParseEnum(aErrorCode, keyword, nsCSSProps::kTextDecorationKTable)) {
intValue |= keyword.GetIntValue();
}
else {
break;
}
}
aValue.SetIntValue(intValue, eCSSUnit_Enumerated);
}
return PR_TRUE;
}
return PR_FALSE;
}
PRBool CSSParserImpl::ParseTextShadow(nsresult& aErrorCode)
{
nsCSSValue value;
if (ParseVariant(aErrorCode, value, VARIANT_HC | VARIANT_LENGTH | VARIANT_NONE, nsnull)) {
nsCSSUnit unit = value.GetUnit();
if ((eCSSUnit_Color == unit) || (eCSSUnit_String == unit) || value.IsLengthUnit()) {
nsCSSShadow* shadowHead = new nsCSSShadow();
nsCSSShadow* shadow = shadowHead;
if (nsnull == shadow) {
aErrorCode = NS_ERROR_OUT_OF_MEMORY;
return PR_FALSE;
}
while (nsnull != shadow) {
PRBool haveColor = PR_FALSE;
if (value.IsLengthUnit()) {
shadow->mXOffset = value;
}
else {
haveColor = PR_TRUE;
shadow->mColor = value;
if (ParseVariant(aErrorCode, value, VARIANT_LENGTH, nsnull)) {
shadow->mXOffset = value;
}
else {
break;
}
}
if (ParseVariant(aErrorCode, value, VARIANT_LENGTH, nsnull)) {
shadow->mYOffset = value;
}
else {
break;
}
if (ParseVariant(aErrorCode, value, VARIANT_LENGTH, nsnull)) {
shadow->mRadius = value;
} // optional
if (PR_FALSE == haveColor) {
if (ParseVariant(aErrorCode, value, VARIANT_COLOR, nsnull)) {
shadow->mColor = value;
}
}
if (ExpectSymbol(aErrorCode, ',', PR_TRUE)) {
shadow->mNext = new nsCSSShadow();
shadow = shadow->mNext;
if (nsnull == shadow) {
aErrorCode = NS_ERROR_OUT_OF_MEMORY;
break;
}
if (PR_FALSE == ParseVariant(aErrorCode, value, VARIANT_COLOR | VARIANT_LENGTH, nsnull)) {
break;
}
}
else {
if (ExpectEndProperty(aErrorCode, PR_TRUE)) {
mTempData.SetPropertyBit(eCSSProperty_text_shadow);
mTempData.mText.mTextShadow = shadowHead;
aErrorCode = NS_OK;
return PR_TRUE;
}
break;
}
}
delete shadowHead;
return PR_FALSE;
}
// value is inherit or none
if (ExpectEndProperty(aErrorCode, PR_TRUE)) {
nsCSSShadow* shadowHead = new nsCSSShadow();
shadowHead->mXOffset = value;
mTempData.SetPropertyBit(eCSSProperty_text_shadow);
mTempData.mText.mTextShadow = shadowHead;
return PR_TRUE;
}
}
return PR_FALSE;
}
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