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90510e12e0
gecko-dev/layout/style/nsCSSParser.cpp
peterl%netscape.com 90510e12e0 added media support to @import
1998-11-26 05:16:22 +00:00

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "nsICSSParser.h"
#include "nsCSSProps.h"
#include "nsCSSKeywords.h"
#include "nsCSSScanner.h"
#include "nsICSSStyleRule.h"
#include "nsIUnicharInputStream.h"
#include "nsIStyleSet.h"
#include "nsICSSStyleSheet.h"
#include "nsICSSDeclaration.h"
#include "nsStyleConsts.h"
#include "nsIURL.h"
#include "nsString.h"
#include "nsIAtom.h"
#include "nsVoidArray.h"
#include "nsColor.h"
#include "nsStyleConsts.h"
// XXX TODO:
// - rework aErrorCode stuff: switch over to nsresult
// - bug: "color: red {fish};" emits a property for color instead of zapping it
static NS_DEFINE_IID(kICSSParserIID, NS_ICSS_PARSER_IID);
static NS_DEFINE_IID(kICSSStyleSheetIID, NS_ICSS_STYLE_SHEET_IID);
static NS_DEFINE_IID(kIStyleSheetIID, NS_ISTYLE_SHEET_IID);
static NS_DEFINE_IID(kCSSColorSID, NS_CSS_COLOR_SID);
static NS_DEFINE_IID(kCSSContentSID, NS_CSS_CONTENT_SID);
static NS_DEFINE_IID(kCSSTextSID, NS_CSS_TEXT_SID);
#define KEYWORD_BUFFER_SIZE 50 // big enough for any keyword
struct Selector {
nsAutoString mTag; // weight 1
nsAutoString mID; // weight 100
nsAutoString mClass; // weight 10
nsAutoString mPseudoClass; // weight 10 (== class)
nsAutoString mPseudoElement; // weight 10 (== class) ??
PRUint32 mMask; // which fields have values
Selector();
~Selector();
PRInt32 Weight() const;
#ifdef NS_DEBUG
void Dump() const;
#endif
};
#define SELECTOR_TAG 0x01
#define SELECTOR_ID 0x02
#define SELECTOR_CLASS 0x04
#define SELECTOR_PSEUDO_CLASS 0x08
#define SELECTOR_PSEUDO_ELEMENT 0x10
#define SELECTOR_WEIGHT_BASE 10
Selector::Selector()
{
mMask = 0;
}
Selector::~Selector()
{
}
PRInt32 Selector::Weight() const
{
return (((0 != (SELECTOR_TAG & mMask)) ? 1 : 0) +
((0 != (SELECTOR_ID & mMask)) ? (SELECTOR_WEIGHT_BASE * SELECTOR_WEIGHT_BASE) : 0) +
((0 != ((SELECTOR_CLASS | SELECTOR_PSEUDO_CLASS | SELECTOR_PSEUDO_ELEMENT) & mMask)) ? SELECTOR_WEIGHT_BASE : 0));
}
#ifdef NS_DEBUG
void Selector::Dump() const
{
PRBool needSpace = PR_FALSE;
if (mTag.Length() > 0) {
fputs(mTag, stdout);
needSpace = PR_TRUE;
}
if (mID.Length() > 0) {
if (needSpace) fputs(" ", stdout);
fputs("#", stdout);
fputs(mID, stdout);
needSpace = PR_TRUE;
}
if (mClass.Length() > 0) {
if (needSpace) fputs(" ", stdout);
fputs(".", stdout);
fputs(mClass, stdout);
needSpace = PR_TRUE;
}
if (mPseudoClass.Length() > 0) {
if (needSpace) fputs(" ", stdout);
fputs(":", stdout);
fputs(mPseudoClass, stdout);
needSpace = PR_TRUE;
}
if (mPseudoElement.Length() > 0) {
if (needSpace) fputs(" ", stdout);
fputs(":", stdout);
fputs(mPseudoElement, stdout);
needSpace = PR_TRUE;
}
}
#endif
// e.g. "P B, H1 B { ... }" has a selector list with two elements,
// each of which has two selectors.
struct SelectorList {
SelectorList* mNext;
nsVoidArray mSelectors;
SelectorList();
void Destroy();
void AddSelector(Selector* aSelector) {
mSelectors.AppendElement(aSelector);
}
#ifdef NS_DEBUG
void Dump();
#endif
private:
~SelectorList();
};
SelectorList::SelectorList()
{
mNext = nsnull;
}
SelectorList::~SelectorList()
{
PRInt32 n = mSelectors.Count();
for (PRInt32 i = 0; i < n; i++) {
Selector* sel = (Selector*) mSelectors.ElementAt(i);
delete sel;
}
}
void SelectorList::Destroy()
{
SelectorList* list = this;
while (nsnull != list) {
SelectorList* next = list->mNext;
delete list;
list = next;
}
}
#ifdef NS_DEBUG
void SelectorList::Dump()
{
PRInt32 n = mSelectors.Count();
for (PRInt32 i = 0; i < n; i++) {
Selector* sel = (Selector*) mSelectors.ElementAt(i);
sel->Dump();
fputs(" ", stdout);
}
if (mNext) {
fputs(", ", stdout);
mNext->Dump();
}
}
#endif
//----------------------------------------------------------------------
// Your basic top-down recursive descent style parser
class CSSParserImpl : public nsICSSParser {
public:
CSSParserImpl();
CSSParserImpl(nsICSSStyleSheet* aSheet);
~CSSParserImpl();
NS_DECL_ISUPPORTS
NS_IMETHOD GetInfoMask(PRUint32& aResult);
NS_IMETHOD SetStyleSheet(nsICSSStyleSheet* aSheet);
NS_IMETHOD Parse(nsIUnicharInputStream* aInput,
nsIURL* aInputURL,
nsICSSStyleSheet*& aResult);
NS_IMETHOD ParseDeclarations(const nsString& aDeclaration,
nsIURL* aBaseURL,
nsIStyleRule*& aResult);
NS_IMETHOD ParseAndAppendDeclaration(const nsString& aBuffer,
nsIURL* aBaseURL,
nsICSSDeclaration* aDeclaration,
PRInt32* aHint);
protected:
PRBool GetToken(PRInt32& aErrorCode, PRBool aSkipWS);
PRBool GetURLToken(PRInt32& aErrorCode, PRBool aSkipWS);
void UngetToken();
PRBool ExpectSymbol(PRInt32& aErrorCode, char aSymbol, PRBool aSkipWS);
PRBool ExpectEndProperty(PRInt32& aErrorCode, PRBool aSkipWS);
nsString* NextIdent(PRInt32& aErrorCode);
void SkipUntil(PRInt32& aErrorCode, PRUnichar aStopSymbol);
void SkipRuleSet(PRInt32& aErrorCode);
PRBool SkipDeclaration(PRInt32& aErrorCode, PRBool aCheckForBraces);
PRBool ParseRuleSet(PRInt32& aErrorCode);
PRBool ParseAtRule(PRInt32& aErrorCode);
PRBool ParseImportRule(PRInt32& aErrorCode);
PRBool GatherMedia(PRInt32& aErrorCode, nsString& aMedia);
PRBool ProcessImport(PRInt32& aErrorCode, const nsString& aURLSpec, const nsString& aMedia);
PRBool ParseSelectorGroup(PRInt32& aErrorCode, SelectorList* aListHead);
PRBool ParseSelectorList(PRInt32& aErrorCode, SelectorList* aListHead);
PRBool ParseSelector(PRInt32& aErrorCode, Selector* aSelectorResult);
nsICSSDeclaration* ParseDeclarationBlock(PRInt32& aErrorCode,
PRBool aCheckForBraces);
PRBool ParseDeclaration(PRInt32& aErrorCode,
nsICSSDeclaration* aDeclaration,
PRBool aCheckForBraces,
PRInt32& aChangeHint);
PRBool ParseProperty(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration,
PRInt32 aPropID, PRInt32& aChangeHint);
PRBool ParseProperty(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration,
PRInt32 aPropID);
// Property specific parsing routines
PRBool ParseAzimuth(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration);
PRBool ParseBackground(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration);
PRBool ParseBackgroundFilter(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration);
PRBool ParseForegroundFilter(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration);
PRBool ParseBackgroundPosition(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration);
PRBool ParseBorder(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration);
PRBool ParseBorderColor(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration);
PRBool ParseBorderSpacing(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration);
PRBool ParseBorderSide(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration,
const PRInt32 aPropIDs[], PRInt32 aWhichSide);
PRBool ParseBorderStyle(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration);
PRBool ParseBorderWidth(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration);
PRBool ParseClip(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration);
PRBool ParseContent(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration);
PRBool ParseCounterData(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration,
PRInt32 aPropID);
PRBool ParseCue(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration);
PRBool ParseCursor(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration);
PRBool ParseFont(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration);
PRBool ParseFamily(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration, PRInt32 aPropID);
PRBool ParseListStyle(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration);
PRBool ParseMargin(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration);
PRBool ParseMarks(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration);
PRBool ParseOutline(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration);
PRBool ParsePadding(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration);
PRBool ParsePause(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration);
PRBool ParsePlayDuring(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration);
PRBool ParseQuotes(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration);
PRBool ParseSize(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration);
PRBool ParseTextDecoration(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration);
PRBool ParseTextShadow(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration);
// Reused utility parsing routines
PRBool ParseBoxProperties(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration,
const PRInt32 aPropIDs[]);
PRInt32 ParseChoice(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration,
const PRInt32 aPropIDs[], PRInt32 aNumIDs);
PRBool ParseColor(PRInt32& aErrorCode, nsCSSValue& aValue);
PRBool ParseColorComponent(PRInt32& aErrorCode, PRUint8& aComponent,
char aStop);
PRBool ParseEnum(PRInt32& aErrorCode, nsCSSValue& aValue, const PRInt32 aKeywordTable[]);
PRInt32 SearchKeywordTable(PRInt32 aID, const PRInt32 aTable[]);
PRBool ParseVariant(PRInt32& aErrorCode, nsCSSValue& aValue,
PRInt32 aVariantMask,
const PRInt32 aKeywordTable[],
PRInt32& aParsedVariant);
PRBool ParseVariant(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration,
PRInt32 aPropID, PRInt32 aVariantMask,
const PRInt32 aKeywordTable[],
PRInt32& aParsedVariant);
PRBool ParseCounter(PRInt32& aErrorCode, nsCSSValue& aValue);
PRBool ParseAttr(PRInt32& aErrorCode, nsCSSValue& aValue);
PRBool ParseURL(PRInt32& aErrorCode, nsCSSValue& aValue);
PRBool TranslateDimension(nsCSSValue& aValue, PRInt32 aVariantMask,
float aNumber, const nsString& aUnit,
PRInt32& aParsedVariant);
// Current token. The value is valid after calling GetToken
nsCSSToken mToken;
// After an UngetToken is done this flag is true. The next call to
// GetToken clears the flag.
PRBool mHavePushBack;
nsCSSScanner* mScanner;
nsIURL* mURL;
nsICSSStyleSheet* mSheet;
PRBool mInHead;
PRBool mNavQuirkMode;
};
NS_HTML nsresult
NS_NewCSSParser(nsICSSParser** aInstancePtrResult)
{
CSSParserImpl *it = new CSSParserImpl();
if (it == nsnull) {
return NS_ERROR_OUT_OF_MEMORY;
}
return it->QueryInterface(kICSSParserIID, (void **) aInstancePtrResult);
}
CSSParserImpl::CSSParserImpl()
{
NS_INIT_REFCNT();
mScanner = nsnull;
mSheet = nsnull;
mHavePushBack = PR_FALSE;
mNavQuirkMode = PR_TRUE;
}
CSSParserImpl::CSSParserImpl(nsICSSStyleSheet* aSheet)
{
NS_INIT_REFCNT();
mScanner = nsnull;
mSheet = aSheet; NS_ADDREF(aSheet);
mHavePushBack = PR_FALSE;
mNavQuirkMode = PR_TRUE;
}
NS_IMPL_ISUPPORTS(CSSParserImpl,kICSSParserIID)
CSSParserImpl::~CSSParserImpl()
{
NS_IF_RELEASE(mSheet);
}
NS_METHOD
CSSParserImpl::GetInfoMask(PRUint32& aResult)
{
aResult = NS_CSS_GETINFO_CSS1 | NS_CSS_GETINFO_CSSP;
return NS_OK;
}
NS_METHOD
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
NS_IF_RELEASE(mSheet);
mSheet = aSheet;
NS_ADDREF(mSheet);
}
return NS_OK;
}
NS_METHOD
CSSParserImpl::Parse(nsIUnicharInputStream* aInput,
nsIURL* aInputURL,
nsICSSStyleSheet*& aResult)
{
if (nsnull == mSheet) {
NS_NewCSSStyleSheet(&mSheet, aInputURL);
}
PRInt32 errorCode = NS_OK;
mScanner = new nsCSSScanner();
mScanner->Init(aInput);
mURL = aInputURL;
NS_IF_ADDREF(aInputURL);
mInHead = PR_TRUE;
nsCSSToken* tk = &mToken;
for (;;) {
// Get next non-whitespace token
if (!GetToken(errorCode, PR_TRUE)) {
break;
}
if (eCSSToken_AtKeyword == tk->mType) {
ParseAtRule(errorCode);
continue;
} else if (eCSSToken_Symbol == tk->mType) {
// Discard dangling semicolons. This is not part of the CSS1
// forward compatible parsing spec, but it makes alot of sense.
if (';' == tk->mSymbol) {
continue;
}
}
mInHead = PR_FALSE;
UngetToken();
ParseRuleSet(errorCode);
}
delete mScanner;
mScanner = nsnull;
NS_IF_RELEASE(mURL);
aResult = mSheet;
NS_ADDREF(aResult);
return NS_OK;
}
NS_METHOD
CSSParserImpl::ParseDeclarations(const nsString& aDeclaration,
nsIURL* aBaseURL,
nsIStyleRule*& aResult)
{
nsString* str = new nsString(aDeclaration);
if (nsnull == str) {
return NS_ERROR_OUT_OF_MEMORY;
}
nsIUnicharInputStream* input = nsnull;
nsresult rv = NS_NewStringUnicharInputStream(&input, str);
if (NS_OK != rv) {
return rv;
}
mScanner = new nsCSSScanner();
mScanner->Init(input);
NS_RELEASE(input);
mURL = aBaseURL;
NS_IF_ADDREF(mURL);
mInHead = PR_FALSE;
PRInt32 errorCode = NS_OK;
nsICSSDeclaration* declaration = ParseDeclarationBlock(errorCode, PR_FALSE);
if (nsnull != declaration) {
// Create a style rule for the delcaration
nsICSSStyleRule* rule = nsnull;
NS_NewCSSStyleRule(&rule, nsCSSSelector());
rule->SetDeclaration(declaration);
aResult = rule;
NS_RELEASE(declaration);
}
else {
aResult = nsnull;
}
delete mScanner;
mScanner = nsnull;
NS_IF_RELEASE(mURL);
return NS_OK;
}
NS_METHOD
CSSParserImpl::ParseAndAppendDeclaration(const nsString& aBuffer,
nsIURL* aBaseURL,
nsICSSDeclaration* aDeclaration,
PRInt32* aHint)
{
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) {
return rv;
}
mScanner = new nsCSSScanner();
mScanner->Init(input);
NS_RELEASE(input);
mURL = aBaseURL;
NS_IF_ADDREF(mURL);
mInHead = PR_FALSE;
PRInt32 errorCode = NS_OK;
PRInt32 hint = NS_STYLE_HINT_UNKNOWN;
ParseDeclaration(errorCode, aDeclaration, PR_FALSE, hint);
if (nsnull != aHint) {
*aHint = hint;
}
delete mScanner;
mScanner = nsnull;
NS_IF_RELEASE(mURL);
return NS_OK;
}
//----------------------------------------------------------------------
PRBool CSSParserImpl::GetToken(PRInt32& 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(PRInt32& 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(PRInt32& aErrorCode,
char aSymbol,
PRBool aSkipWS)
{
if (!GetToken(aErrorCode, aSkipWS)) {
return PR_FALSE;
}
nsCSSToken* tk = &mToken;
if ((eCSSToken_Symbol == tk->mType) && (aSymbol == tk->mSymbol)) {
return PR_TRUE;
}
UngetToken();
return PR_FALSE;
}
PRBool CSSParserImpl::ExpectEndProperty(PRInt32& aErrorCode, PRBool aSkipWS)
{
if (!GetToken(aErrorCode, aSkipWS)) {
return PR_FALSE;
}
if ((eCSSToken_Symbol == mToken.mType) &&
((';' == mToken.mSymbol) || ('!' == mToken.mSymbol))) {
UngetToken();
return PR_TRUE;
}
UngetToken();
return PR_FALSE;
}
nsString* CSSParserImpl::NextIdent(PRInt32& aErrorCode)
{
if (!GetToken(aErrorCode, PR_TRUE)) {
return nsnull;
}
if (eCSSToken_Ident != mToken.mType) {
UngetToken();
return nsnull;
}
return &mToken.mIdent;
}
// XXX @media type {, types } '{' rules '}'
// XXX @font-face
// XXX @page { :left | :right } '{' declarations '}'
PRBool CSSParserImpl::ParseAtRule(PRInt32& aErrorCode)
{
nsCSSToken* tk = &mToken;
if (mInHead && tk->mIdent.EqualsIgnoreCase("import")) {
ParseImportRule(aErrorCode);
return PR_TRUE;
}
// Skip over unsupported at rule
for (;;) {
if (!GetToken(aErrorCode, PR_TRUE)) {
return PR_FALSE;
}
if (eCSSToken_Symbol == tk->mType) {
PRUnichar symbol = tk->mSymbol;
if (symbol == ';') {
break;
}
if (symbol == '{') {
SkipUntil(aErrorCode, '}');
break;
} else if (symbol == '(') {
SkipUntil(aErrorCode, ')');
} else if (symbol == '[') {
SkipUntil(aErrorCode, ']');
}
}
}
mInHead = PR_FALSE;
return PR_TRUE;
}
PRBool CSSParserImpl::GatherMedia(PRInt32& aErrorCode, nsString& aMedia)
{
PRBool first = PR_TRUE;
for (;;) {
if (!GetToken(aErrorCode, PR_TRUE)) {
break;
}
if (eCSSToken_Symbol == mToken.mType) {
PRUnichar symbol = mToken.mSymbol;
if (';' == symbol) {
UngetToken();
return PR_TRUE;
} else if (',' != symbol) {
UngetToken();
return PR_FALSE;
}
}
else if (eCSSToken_Ident == mToken.mType) {
if (! first) {
aMedia.Append(',');
}
aMedia.Append(mToken.mIdent);
first = PR_FALSE;
}
else {
break;
}
}
aMedia.Truncate();
return PR_FALSE;
}
// Parse a CSS1 import rule: "@import STRING | URL [medium [, mdeium]]"
PRBool CSSParserImpl::ParseImportRule(PRInt32& aErrorCode)
{
if (!GetToken(aErrorCode, PR_TRUE)) {
return PR_FALSE;
}
nsAutoString url;
nsAutoString media;
if (eCSSToken_String == mToken.mType) {
url = mToken.mIdent;
if (GatherMedia(aErrorCode, media)) {
if (ExpectSymbol(aErrorCode, ';', PR_TRUE)) {
ProcessImport(aErrorCode, url, media);
return PR_TRUE;
}
}
if ((eCSSToken_Symbol != mToken.mType) || (';' != mToken.mSymbol)) {
SkipUntil(aErrorCode, ';');
}
}
else if (eCSSToken_Function == mToken.mType) {
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);
return PR_TRUE;
}
}
}
}
}
}
if ((eCSSToken_Symbol != mToken.mType) || (';' != mToken.mSymbol)) {
SkipUntil(aErrorCode, ';');
}
}
mInHead = PR_FALSE;
return PR_TRUE;
}
PRBool CSSParserImpl::ProcessImport(PRInt32& aErrorCode, const nsString& aURLSpec, const nsString& aMedia)
{
PRBool result = PR_FALSE;
// XXX probably need a way to encode unicode junk for the part of
// the url that follows a "?"
char* cp = aURLSpec.ToNewCString();
nsIURL* url;
aErrorCode = NS_NewURL(&url, mURL, cp);
delete [] cp;
if (NS_FAILED(aErrorCode)) {
// import url is bad
// XXX log this somewhere for easier web page debugging
return PR_FALSE;
}
if (PR_FALSE == mSheet->ContainsStyleSheet(url)) { // don't allow circular references
PRInt32 ec;
nsIInputStream* in = url->Open(&ec);
if (nsnull == in) {
// failure to make connection
// XXX log this somewhere for easier web page debugging
}
else {
nsIUnicharInputStream* uin;
aErrorCode = NS_NewConverterStream(&uin, nsnull, in);
if (NS_FAILED(aErrorCode)) {
// XXX no iso-latin-1 converter? out of memory?
NS_RELEASE(in);
}
else {
NS_RELEASE(in);
// Create a new parse to parse the import.
nsICSSParser* parser;
aErrorCode = NS_NewCSSParser(&parser);
if (NS_SUCCEEDED(aErrorCode)) {
nsICSSStyleSheet* childSheet = nsnull;
aErrorCode = parser->Parse(uin, url, childSheet);
NS_RELEASE(parser);
if (NS_SUCCEEDED(aErrorCode) && (nsnull != childSheet)) {
mSheet->AppendStyleSheet(childSheet);
result = PR_TRUE;
}
NS_IF_RELEASE(childSheet);
}
NS_RELEASE(uin);
}
}
}
NS_RELEASE(url);
return result;
}
void CSSParserImpl::SkipUntil(PRInt32& 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(PRInt32& aErrorCode, PRBool aCheckForBraces)
{
nsCSSToken* tk = &mToken;
for (;;) {
if (!GetToken(aErrorCode, PR_TRUE)) {
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(PRInt32& aErrorCode)
{
nsCSSToken* tk = &mToken;
for (;;) {
if (!GetToken(aErrorCode, PR_TRUE)) {
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::ParseRuleSet(PRInt32& aErrorCode)
{
nsCSSToken* tk = &mToken;
// First get the list of selectors for the rule
SelectorList *slist = new SelectorList();
if (!ParseSelectorList(aErrorCode, slist)) {
SkipRuleSet(aErrorCode);
slist->Destroy();
return PR_FALSE;
}
// Next parse the declaration block
nsICSSDeclaration* declaration = ParseDeclarationBlock(aErrorCode, PR_TRUE);
if (nsnull == declaration) {
// XXX skip something here
slist->Destroy();
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
SelectorList* list = slist;
nsCSSSelector selector;
nsICSSStyleRule* rule = nsnull;
while (nsnull != list) {
PRInt32 selIndex = list->mSelectors.Count();
Selector* sel = (Selector*)list->mSelectors[--selIndex];
if (0 < sel->mPseudoElement.Length()) { // only pseudo elements at end selector
nsString nullStr;
selector.Set(sel->mPseudoElement, nullStr, nullStr, nullStr);
NS_NewCSSStyleRule(&rule, selector);
}
selector.Set(sel->mTag, sel->mID, sel->mClass, sel->mPseudoClass);
PRInt32 weight = sel->Weight();
if (nsnull == rule) {
NS_NewCSSStyleRule(&rule, selector);
}
else {
rule->AddSelector(selector);
}
if (nsnull != rule) {
while (--selIndex >= 0) {
Selector* sel = (Selector*)list->mSelectors[selIndex];
selector.Set(sel->mTag, sel->mID, sel->mClass, sel->mPseudoClass);
rule->AddSelector(selector);
weight += sel->Weight();
}
rule->SetDeclaration(declaration);
rule->SetWeight(weight);
// rule->List();
mSheet->AppendStyleRule(rule);
NS_RELEASE(rule);
}
list = list->mNext;
}
// Release temporary storage
slist->Destroy();
NS_RELEASE(declaration);
return PR_TRUE;
}
PRBool CSSParserImpl::ParseSelectorList(PRInt32& aErrorCode,
SelectorList* aListHead)
{
if (!ParseSelectorGroup(aErrorCode, aListHead)) {
// must have at least one selector group
return PR_FALSE;
}
// After that there must either be a "," or a "{"
nsCSSToken* tk = &mToken;
for (;;) {
if (!GetToken(aErrorCode, PR_TRUE)) {
return PR_FALSE;
}
if (eCSSToken_Symbol != tk->mType) {
UngetToken();
return PR_FALSE;
}
if (',' == tk->mSymbol) {
// Another selector group must follow
SelectorList* newList = new SelectorList();
if (!ParseSelectorGroup(aErrorCode, newList)) {
newList->Destroy();
return PR_FALSE;
}
// add new list to the end of the selector list
aListHead->mNext = newList;
aListHead = newList;
continue;
} else if ('{' == tk->mSymbol) {
UngetToken();
break;
} else {
UngetToken();
return PR_FALSE;
}
}
return PR_TRUE;
}
PRBool CSSParserImpl::ParseSelectorGroup(PRInt32& aErrorCode,
SelectorList* aList)
{
for (;;) {
Selector* sel = new Selector();
if (!ParseSelector(aErrorCode, sel)) {
delete sel;
break;
}
aList->AddSelector(sel);
}
return (PRBool) (aList->mSelectors.Count() > 0);
}
static PRBool IsPseudoClass(const nsString& aBuffer)
{
return (aBuffer.EqualsIgnoreCase("link") ||
aBuffer.EqualsIgnoreCase("visited") ||
aBuffer.EqualsIgnoreCase("hover") ||
aBuffer.EqualsIgnoreCase("out-of-date") || // our extension
aBuffer.EqualsIgnoreCase("active"));
}
/**
* These are the 31 possible kinds of CSS1 style selectors:
* (but there are 50 ways to leave your lover)
* [*] means it can repeat
* <UL>
* <LI>Tag
* <LI>Tag#Id
* <LI>Tag#Id.Class[*]
* <LI>Tag#Id.Class[*]:PseudoClass[*]
* <LI>Tag#Id.Class[*]:PseudoClass[*]:PseudoElement
* <LI>Tag#Id.Class[*]:PseudoElement
* <LI>Tag#Id:PseudoClass[*]
* <LI>Tag#Id:PseudoClass[*]:PseudoElement
* <LI>Tag#Id:PseudoElement
* <LI>Tag.Class[*]
* <LI>Tag.Class[*]:PseudoClass[*]
* <LI>Tag.Class[*]:PseudoClass[*]:PseudoElement
* <LI>Tag.Class[*]:PseudoElement
* <LI>Tag:PseudoClass[*]
* <LI>Tag:PseudoClass[*]:PseudoElement
* <LI>Tag:PseudoElement
* <LI>#Id
* <LI>#Id.Class[*]
* <LI>#Id.Class[*]:PseudoClass[*]
* <LI>#Id.Class[*]:PseudoClass[*]:PseudoElement
* <LI>#Id.Class[*]:PseudoElement
* <LI>#Id:PseudoClass[*]
* <LI>#Id:PseudoClass[*]:PseudoElement
* <LI>#Id:PseudoElement
* <LI>.Class[*]
* <LI>.Class[*]:PseudoClass[*]
* <LI>.Class[*]:PseudoClass[*]:PseudoElement
* <LI>.Class[*]:PseudoElement
* <LI>:PseudoClass[*]
* <LI>:PseudoClass[*]:PseudoElement
* <LI>:PseudoElement
* </UL>
*/
PRBool CSSParserImpl::ParseSelector(PRInt32& aErrorCode,
Selector* aSelectorResult)
{
PRUint32 mask = 0;
aSelectorResult->mTag.Truncate(0);
aSelectorResult->mClass.Truncate(0);
aSelectorResult->mID.Truncate(0);
aSelectorResult->mPseudoClass.Truncate(0);
aSelectorResult->mPseudoElement.Truncate(0);
nsCSSToken* tk = &mToken;
if (!GetToken(aErrorCode, PR_TRUE)) {
return PR_FALSE;
}
if (eCSSToken_Ident == tk->mType) {
// tag
mask |= SELECTOR_TAG;
aSelectorResult->mTag.Append(tk->mIdent);
if (!GetToken(aErrorCode, PR_FALSE)) {
// premature eof is ok (here!)
return PR_TRUE;
}
}
if (eCSSToken_ID == tk->mType) {
// #id
if ((0 < tk->mIdent.Length()) && (nsString::IsAlpha(tk->mIdent.CharAt(0)))) { // verify is legal ID
mask |= SELECTOR_ID;
aSelectorResult->mID.Append(tk->mIdent);
if (!GetToken(aErrorCode, PR_FALSE)) {
// premature eof is ok (here!)
return PR_TRUE;
}
}
else {
return PR_FALSE;
}
}
if ((eCSSToken_Symbol == tk->mType) && ('.' == tk->mSymbol)) {
// .class
if (!GetToken(aErrorCode, PR_FALSE)) {
return PR_FALSE;
}
if (eCSSToken_Ident != tk->mType) {
// malformed selector
UngetToken();
return PR_FALSE;
}
mask |= SELECTOR_CLASS;
aSelectorResult->mClass.Append(tk->mIdent);
if (!GetToken(aErrorCode, PR_FALSE)) {
// premature eof is ok (here!)
return PR_TRUE;
}
}
if ((eCSSToken_Symbol == tk->mType) && (':' == tk->mSymbol)) {
// :pseudo
if (!GetToken(aErrorCode, PR_FALSE)) {
// premature eof
return PR_FALSE;
}
if (eCSSToken_Ident != tk->mType) {
// malformed selector
UngetToken();
return PR_FALSE;
}
if (IsPseudoClass(tk->mIdent)) {
mask |= SELECTOR_PSEUDO_CLASS;
aSelectorResult->mPseudoClass.Append(tk->mIdent);
}
else {
mask |= SELECTOR_PSEUDO_ELEMENT;
aSelectorResult->mPseudoElement.Append(':'); // keep the colon
aSelectorResult->mPseudoElement.Append(tk->mIdent);
}
if (!GetToken(aErrorCode, PR_FALSE)) {
// premature eof is ok (here!)
return PR_TRUE;
}
}
if ((eCSSToken_Symbol == tk->mType) && (':' == tk->mSymbol)) {
// :pseudo
if (!GetToken(aErrorCode, PR_FALSE)) {
// premature eof
return PR_FALSE;
}
if (eCSSToken_Ident != tk->mType) {
// malformed selector
UngetToken();
return PR_FALSE;
}
if (! IsPseudoClass(tk->mIdent)) {
mask |= SELECTOR_PSEUDO_ELEMENT;
aSelectorResult->mPseudoElement.Truncate(0);
aSelectorResult->mPseudoElement.Append(':'); // keep the colon
aSelectorResult->mPseudoElement.Append(tk->mIdent);
}
tk = nsnull;
}
if (nsnull != tk) {
UngetToken();
}
if (mask == 0) {
return PR_FALSE;
}
aSelectorResult->mMask = mask;
return PR_TRUE;
}
nsICSSDeclaration*
CSSParserImpl::ParseDeclarationBlock(PRInt32& aErrorCode,
PRBool aCheckForBraces)
{
if (aCheckForBraces) {
if (!ExpectSymbol(aErrorCode, '{', PR_TRUE)) {
return nsnull;
}
}
nsICSSDeclaration* declaration = nsnull;
if (NS_OK == NS_NewCSSDeclaration(&declaration)) {
PRInt32 count = 0;
for (;;) {
PRInt32 hint;
if (ParseDeclaration(aErrorCode, declaration, aCheckForBraces, hint)) {
count++; // count declarations
}
else {
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.
}
}
if (0 == count) { // didn't get any XXX is this ok with the DOM?
NS_RELEASE(declaration);
}
}
return declaration;
}
PRBool CSSParserImpl::ParseColor(PRInt32& aErrorCode, nsCSSValue& aValue)
{
char cbuf[KEYWORD_BUFFER_SIZE];
if (!GetToken(aErrorCode, PR_TRUE)) {
return PR_FALSE;
}
nsCSSToken* tk = &mToken;
nscolor rgba;
switch (tk->mType) {
case eCSSToken_ID:
// #xxyyzz
tk->mIdent.ToCString(cbuf, sizeof(cbuf));
if (NS_HexToRGB(cbuf, &rgba)) {
aValue.SetColorValue(rgba);
return PR_TRUE;
}
break;
case eCSSToken_Ident:
tk->mIdent.ToCString(cbuf, sizeof(cbuf));
if (NS_ColorNameToRGB(cbuf, &rgba)) {
aValue.SetStringValue(tk->mIdent, eCSSUnit_String);
return PR_TRUE;
}
break;
case eCSSToken_Function:
// rgb ( component , component , component )
PRUint8 r, g, b;
if (ExpectSymbol(aErrorCode, '(', PR_FALSE) &&
ParseColorComponent(aErrorCode, r, ',') &&
ParseColorComponent(aErrorCode, g, ',') &&
ParseColorComponent(aErrorCode, b, ')')) {
nscolor rgba = NS_RGB(r,g,b);
aValue.SetColorValue(rgba);
return PR_TRUE;
}
return PR_FALSE; // already pushed back
default:
break;
}
// It's not a color
UngetToken();
return PR_FALSE;
}
PRBool CSSParserImpl::ParseColorComponent(PRInt32& aErrorCode,
PRUint8& aComponent,
char aStop)
{
if (!GetToken(aErrorCode, PR_TRUE)) {
return PR_FALSE;
}
float value;
nsCSSToken* tk = &mToken;
switch (tk->mType) {
case eCSSToken_Number:
value = tk->mNumber;
break;
case eCSSToken_Percentage:
value = tk->mNumber * 255.0f;
break;
default:
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;
}
return PR_FALSE;
}
//----------------------------------------------------------------------
PRBool
CSSParserImpl::ParseDeclaration(PRInt32& aErrorCode,
nsICSSDeclaration* aDeclaration,
PRBool aCheckForBraces,
PRInt32& aChangeHint)
{
aChangeHint = NS_STYLE_HINT_UNKNOWN;
// Get property name
nsCSSToken* tk = &mToken;
char propertyName[100];
for (;;) {
if (!GetToken(aErrorCode, PR_TRUE)) {
return PR_FALSE;
}
if (eCSSToken_Ident == tk->mType) {
tk->mIdent.ToCString(propertyName, sizeof(propertyName));
// grab the ident before the ExpectSymbol trashes the token
if (!ExpectSymbol(aErrorCode, ':', PR_TRUE)) {
return PR_FALSE;
}
break;
}
if ((eCSSToken_Symbol == tk->mType) && (';' == tk->mSymbol)) {
// dangling semicolons are skipped
continue;
}
// Not a declaration...
UngetToken();
return PR_FALSE;
}
// Map property name to it's ID and then parse the property
PRInt32 propID = nsCSSProps::LookupName(propertyName);
if (0 > propID) { // unknown property
return PR_FALSE;
}
if (! ParseProperty(aErrorCode, aDeclaration, propID, aChangeHint)) {
return PR_FALSE;
}
// 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
return PR_FALSE;
}
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
return PR_FALSE;
}
if ((eCSSToken_Ident != tk->mType) ||
!tk->mIdent.EqualsIgnoreCase("important")) {
UngetToken();
return PR_FALSE;
}
isImportant = PR_TRUE;
}
else {
// Not a !important declaration
UngetToken();
}
}
else {
// Not a !important declaration
UngetToken();
}
}
if (PR_TRUE == isImportant) {
aDeclaration->SetValueImportant(propID);
}
// 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
return PR_FALSE;
}
return PR_TRUE;
}
if (eCSSToken_Symbol == tk->mType) {
if (';' == tk->mSymbol) {
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.
return PR_FALSE;
}
if ('}' == tk->mSymbol) {
UngetToken();
return PR_TRUE;
}
}
return PR_FALSE;
}
// 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_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 PRInt32 kBorderTopIDs[] = {
PROP_BORDER_TOP_WIDTH,
PROP_BORDER_TOP_STYLE,
PROP_BORDER_TOP_COLOR
};
static const PRInt32 kBorderRightIDs[] = {
PROP_BORDER_RIGHT_WIDTH,
PROP_BORDER_RIGHT_STYLE,
PROP_BORDER_RIGHT_COLOR
};
static const PRInt32 kBorderBottomIDs[] = {
PROP_BORDER_BOTTOM_WIDTH,
PROP_BORDER_BOTTOM_STYLE,
PROP_BORDER_BOTTOM_COLOR
};
static const PRInt32 kBorderLeftIDs[] = {
PROP_BORDER_LEFT_WIDTH,
PROP_BORDER_LEFT_STYLE,
PROP_BORDER_LEFT_COLOR
};
PRInt32 CSSParserImpl::SearchKeywordTable(PRInt32 aKeywordID, const PRInt32 aKeywordTable[])
{
PRInt32 index = 0;
while (0 <= aKeywordTable[index]) {
if (aKeywordID == aKeywordTable[index++]) {
return index;
}
index++;
}
return -1;
}
PRBool CSSParserImpl::ParseEnum(PRInt32& aErrorCode, nsCSSValue& aValue,
const PRInt32 aKeywordTable[])
{
nsString* ident = NextIdent(aErrorCode);
if (nsnull == ident) {
return PR_FALSE;
}
char cbuf[KEYWORD_BUFFER_SIZE];
ident->ToCString(cbuf, sizeof(cbuf));
PRInt32 keyword = nsCSSKeywords::LookupName(cbuf);
if (0 <= 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(nsCSSValue& aValue,
PRInt32 aVariantMask,
float aNumber,
const nsString& aUnit,
PRInt32& aParsedVariant)
{
nsCSSUnit units;
PRInt32 type = 0;
aParsedVariant = 0;
if (0 != aUnit.Length()) {
char cbuf[KEYWORD_BUFFER_SIZE];
aUnit.ToCString(cbuf, sizeof(cbuf));
PRInt32 id = nsCSSKeywords::LookupName(cbuf);
switch (id) {
case KEYWORD_EM: units = eCSSUnit_EM; type = VARIANT_LENGTH; break;
case KEYWORD_EX: units = eCSSUnit_XHeight; type = VARIANT_LENGTH; break;
case KEYWORD_PX: units = eCSSUnit_Pixel; type = VARIANT_LENGTH; break;
case KEYWORD_IN: units = eCSSUnit_Inch; type = VARIANT_LENGTH; break;
case KEYWORD_CM: units = eCSSUnit_Centimeter; type = VARIANT_LENGTH; break;
case KEYWORD_MM: units = eCSSUnit_Millimeter; type = VARIANT_LENGTH; break;
case KEYWORD_PT: units = eCSSUnit_Point; type = VARIANT_LENGTH; break;
case KEYWORD_PC: units = eCSSUnit_Pica; type = VARIANT_LENGTH; break;
case KEYWORD_DEG: units = eCSSUnit_Degree; type = VARIANT_ANGLE; break;
case KEYWORD_GRAD: units = eCSSUnit_Grad; type = VARIANT_ANGLE; break;
case KEYWORD_RAD: units = eCSSUnit_Radian; type = VARIANT_ANGLE; break;
case KEYWORD_HZ: units = eCSSUnit_Hertz; type = VARIANT_FREQUENCY; break;
case KEYWORD_KHZ: units = eCSSUnit_Kilohertz; type = VARIANT_FREQUENCY; break;
case KEYWORD_S: units = eCSSUnit_Seconds; type = VARIANT_TIME; break;
case KEYWORD_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;
}
}
if ((type & aVariantMask) != 0) {
aValue.SetFloatValue(aNumber, units);
aParsedVariant = type;
return PR_TRUE;
}
return PR_FALSE;
}
PRBool CSSParserImpl::ParseVariant(PRInt32& aErrorCode,
nsICSSDeclaration* aDeclaration,
PRInt32 aPropID,
PRInt32 aVariantMask, const PRInt32 aKeywordTable[],
PRInt32& aParsedVariant)
{
nsCSSValue value;
if (ParseVariant(aErrorCode, value, aVariantMask, aKeywordTable, aParsedVariant)) {
aDeclaration->AppendValue(aPropID, value);
return PR_TRUE;
}
return PR_FALSE;
}
PRBool CSSParserImpl::ParseVariant(PRInt32& aErrorCode, nsCSSValue& aValue,
PRInt32 aVariantMask,
const PRInt32 aKeywordTable[],
PRInt32& aParsedVariant)
{
aParsedVariant = 0;
if (!GetToken(aErrorCode, PR_TRUE)) {
return PR_FALSE;
}
nsCSSToken* tk = &mToken;
if (((aVariantMask & (VARIANT_AHK | VARIANT_NORMAL | VARIANT_NONE)) != 0) &&
(eCSSToken_Ident == tk->mType)) {
char cbuf[KEYWORD_BUFFER_SIZE];
tk->mIdent.ToCString(cbuf, sizeof(cbuf));
PRInt32 keyword = nsCSSKeywords::LookupName(cbuf);
if (0 <= keyword) { // known keyword
if ((aVariantMask & VARIANT_AUTO) != 0) {
if (KEYWORD_AUTO == keyword) {
aValue.SetAutoValue();
aParsedVariant = VARIANT_AUTO;
return PR_TRUE;
}
}
if ((aVariantMask & VARIANT_INHERIT) != 0) {
if (KEYWORD_INHERIT == keyword) {
aValue.SetInheritValue();
aParsedVariant = VARIANT_INHERIT;
return PR_TRUE;
}
}
if ((aVariantMask & VARIANT_NONE) != 0) {
if (KEYWORD_NONE == keyword) {
aValue.SetNoneValue();
aParsedVariant = VARIANT_NONE;
return PR_TRUE;
}
}
if ((aVariantMask & VARIANT_NORMAL) != 0) {
if (KEYWORD_NORMAL == keyword) {
aValue.SetNormalValue();
aParsedVariant = VARIANT_NORMAL;
return PR_TRUE;
}
}
if ((aVariantMask & VARIANT_KEYWORD) != 0) {
PRInt32 index = SearchKeywordTable(keyword, aKeywordTable);
if (0 < index) {
aValue.SetIntValue(aKeywordTable[index], eCSSUnit_Enumerated);
aParsedVariant = VARIANT_KEYWORD;
return PR_TRUE;
}
}
}
}
if (((aVariantMask & (VARIANT_LENGTH | VARIANT_ANGLE | VARIANT_FREQUENCY | VARIANT_TIME)) != 0) &&
tk->isDimension()) {
return TranslateDimension(aValue, aVariantMask,
tk->mNumber, tk->mIdent,
aParsedVariant);
}
if (((aVariantMask & VARIANT_PERCENT) != 0) &&
(eCSSToken_Percentage == tk->mType)) {
aValue.SetPercentValue(tk->mNumber);
aParsedVariant = VARIANT_PERCENT;
return PR_TRUE;
}
if (((aVariantMask & VARIANT_NUMBER) != 0) &&
(eCSSToken_Number == tk->mType)) {
aValue.SetFloatValue(tk->mNumber, eCSSUnit_Number);
aParsedVariant = VARIANT_NUMBER;
return PR_TRUE;
}
if (((aVariantMask & VARIANT_INTEGER) != 0) &&
(eCSSToken_Number == tk->mType) && tk->mIntegerValid) {
aValue.SetIntValue(tk->mInteger, eCSSUnit_Integer);
aParsedVariant = VARIANT_INTEGER;
return PR_TRUE;
}
if (PR_TRUE == mNavQuirkMode) { // NONSTANDARD: Nav interprets unitless numbers as px
if (((aVariantMask & VARIANT_LENGTH) != 0) &&
(eCSSToken_Number == tk->mType)) {
aValue.SetFloatValue(tk->mNumber, eCSSUnit_Pixel);
aParsedVariant = VARIANT_LENGTH;
return PR_TRUE;
}
}
if (((aVariantMask & VARIANT_URL) != 0) &&
(eCSSToken_Function == tk->mType) &&
tk->mIdent.EqualsIgnoreCase("url")) {
if (ParseURL(aErrorCode, aValue)) {
aParsedVariant = VARIANT_URL;
return PR_TRUE;
}
return PR_FALSE;
}
if ((aVariantMask & VARIANT_COLOR) != 0) {
if ((eCSSToken_ID == tk->mType) ||
(eCSSToken_Ident == tk->mType) ||
((eCSSToken_Function == tk->mType) &&
(tk->mIdent.EqualsIgnoreCase("rgb")))) {
// Put token back so that parse color can get it
UngetToken();
if (ParseColor(aErrorCode, aValue)) {
aParsedVariant = VARIANT_COLOR;
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);
aParsedVariant = VARIANT_STRING;
return PR_TRUE;
}
if (((aVariantMask & VARIANT_IDENTIFIER) != 0) &&
(eCSSToken_Ident == tk->mType)) {
aValue.SetStringValue(tk->mIdent, eCSSUnit_String);
aParsedVariant = VARIANT_IDENTIFIER;
return PR_TRUE;
}
if (((aVariantMask & VARIANT_COUNTER) != 0) &&
(eCSSToken_Function == tk->mType) &&
(tk->mIdent.EqualsIgnoreCase("counter") ||
tk->mIdent.EqualsIgnoreCase("counters"))) {
if (ParseCounter(aErrorCode, aValue)) {
aParsedVariant = VARIANT_COUNTER;
return PR_TRUE;
}
return PR_FALSE;
}
if (((aVariantMask & VARIANT_ATTR) != 0) &&
(eCSSToken_Function == tk->mType) &&
tk->mIdent.EqualsIgnoreCase("attr")) {
if (ParseAttr(aErrorCode, aValue)) {
aParsedVariant = VARIANT_ATTR;
return PR_TRUE;
}
return PR_FALSE;
}
UngetToken();
return PR_FALSE;
}
PRBool CSSParserImpl::ParseCounter(PRInt32& aErrorCode, nsCSSValue& aValue)
{
nsCSSUnit unit = (mToken.mIdent.EqualsIgnoreCase("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(',');
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)) {
char cbuf[KEYWORD_BUFFER_SIZE];
mToken.mIdent.ToCString(cbuf, sizeof(cbuf));
PRInt32 keyword = nsCSSKeywords::LookupName(cbuf);
if ((0 <= keyword) &&
(0 < SearchKeywordTable(keyword, nsCSSProps::kListStyleKTable))) {
counter.Append(',');
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(PRInt32& aErrorCode, nsCSSValue& aValue)
{
if (ExpectSymbol(aErrorCode, '(', PR_FALSE)) {
if (GetToken(aErrorCode, PR_TRUE)) {
if ((eCSSToken_String == mToken.mType) ||
(eCSSToken_Ident == mToken.mType)) {
nsAutoString attr;
if (eCSSToken_String == mToken.mType) {
attr.Append(mToken.mSymbol);
attr.Append(mToken.mIdent);
attr.Append(mToken.mSymbol);
}
else {
attr.Append(mToken.mIdent);
}
if (ExpectSymbol(aErrorCode, ')', PR_TRUE)) {
aValue.SetStringValue(attr, eCSSUnit_Attr);
return PR_TRUE;
}
}
else {
UngetToken();
}
}
}
return PR_FALSE;
}
PRBool CSSParserImpl::ParseURL(PRInt32& 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.
// XXX editors won't like this - too bad for now
nsAutoString absURL;
nsString baseURL;
nsresult rv = NS_MakeAbsoluteURL(mURL, baseURL, tk->mIdent, absURL);
if (NS_OK != rv) {
absURL = tk->mIdent;
}
if (ExpectSymbol(aErrorCode, ')', PR_TRUE)) {
aValue.SetStringValue(absURL, eCSSUnit_URL);
return PR_TRUE;
}
}
}
return PR_FALSE;
}
PRInt32 CSSParserImpl::ParseChoice(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration,
const PRInt32 aPropIDs[], PRInt32 aNumIDs)
{
PRInt32 found = 0;
int loop;
for (loop = 0; loop < aNumIDs; loop++) {
// Try each property parser in order
PRInt32 hadFound = found;
int index;
for (index = 0; index < aNumIDs; index++) {
PRInt32 bit = 1 << index;
if ((found & bit) == 0) {
if (ParseProperty(aErrorCode, aDeclaration, aPropIDs[index])) {
found |= bit;
}
}
}
if (found == hadFound) { // found nothing new
break;
}
}
return found;
}
/**
* 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. Note that the replication requires renaming the
* values.
*/
PRBool CSSParserImpl::ParseBoxProperties(PRInt32& aErrorCode,
nsICSSDeclaration* aDeclaration,
const PRInt32 aPropIDs[])
{
// Get up to four values for the property
PRInt32 count = 0;
int index;
for (index = 0; index < 4; index++) {
if (! ParseProperty(aErrorCode, aDeclaration, aPropIDs[index])) {
break;
}
count++;
}
if (count == 0) {
return PR_FALSE;
}
// Provide missing values by replicating some of the values found
nsCSSValue value;
switch (count) {
case 1: // Make right == top
aDeclaration->GetValue(aPropIDs[0], value);
aDeclaration->AppendValue(aPropIDs[1], value);
case 2: // Make bottom == top
aDeclaration->GetValue(aPropIDs[0], value);
aDeclaration->AppendValue(aPropIDs[2], value);
case 3: // Make left == right
aDeclaration->GetValue(aPropIDs[1], value);
aDeclaration->AppendValue(aPropIDs[3], value);
}
return PR_TRUE;
}
PRBool CSSParserImpl::ParseProperty(PRInt32& aErrorCode,
nsICSSDeclaration* aDeclaration,
PRInt32 aPropID,
PRInt32& aChangeHint)
{
// Strip out properties we use internally. These properties are used
// by compound property parsing routines (e.g. "background-position").
switch (aPropID) {
case PROP_BACKGROUND_X_POSITION:
case PROP_BACKGROUND_Y_POSITION:
case PROP_BORDER_X_SPACING:
case PROP_BORDER_Y_SPACING:
case PROP_CLIP_BOTTOM:
case PROP_CLIP_LEFT:
case PROP_CLIP_RIGHT:
case PROP_CLIP_TOP:
// The user can't use these
return PR_FALSE;
default:
break;
}
if (aChangeHint < nsCSSProps::kHintTable[aPropID]) {
aChangeHint = nsCSSProps::kHintTable[aPropID];
}
return ParseProperty(aErrorCode, aDeclaration, aPropID);
}
#define CSS_SIDE_TOP 0
#define CSS_SIDE_RIGHT 1
#define CSS_SIDE_BOTTOM 2
#define CSS_SIDE_LEFT 3
PRBool CSSParserImpl::ParseProperty(PRInt32& aErrorCode,
nsICSSDeclaration* aDeclaration,
PRInt32 aPropID)
{
PRInt32 parsed;
switch (aPropID) {
case PROP_AZIMUTH:
return ParseAzimuth(aErrorCode, aDeclaration);
case PROP_BACKGROUND:
return ParseBackground(aErrorCode, aDeclaration);
case PROP_BACKGROUND_ATTACHMENT:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HK,
nsCSSProps::kBackgroundAttachmentKTable, parsed);
case PROP_BACKGROUND_COLOR:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HCK,
nsCSSProps::kBackgroundColorKTable, parsed);
case PROP_BACKGROUND_FILTER: // XXX
return ParseBackgroundFilter(aErrorCode, aDeclaration);
case PROP_BACKGROUND_IMAGE:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HUO,
nsnull, parsed);
case PROP_BACKGROUND_POSITION:
return ParseBackgroundPosition(aErrorCode, aDeclaration);
case PROP_BACKGROUND_REPEAT:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HK,
nsCSSProps::kBackgroundRepeatKTable, parsed);
case PROP_BORDER:
return ParseBorder(aErrorCode, aDeclaration);
case PROP_BORDER_COLLAPSE:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HK,
nsCSSProps::kBorderCollapseKTable, parsed);
case PROP_BORDER_COLOR:
return ParseBorderColor(aErrorCode, aDeclaration);
case PROP_BORDER_SPACING:
return ParseBorderSpacing(aErrorCode, aDeclaration);
case PROP_BORDER_STYLE:
return ParseBorderStyle(aErrorCode, aDeclaration);
case PROP_BORDER_BOTTOM:
return ParseBorderSide(aErrorCode, aDeclaration, kBorderBottomIDs, CSS_SIDE_BOTTOM);
case PROP_BORDER_LEFT:
return ParseBorderSide(aErrorCode, aDeclaration, kBorderLeftIDs, CSS_SIDE_LEFT);
case PROP_BORDER_RIGHT:
return ParseBorderSide(aErrorCode, aDeclaration, kBorderRightIDs, CSS_SIDE_RIGHT);
case PROP_BORDER_TOP:
return ParseBorderSide(aErrorCode, aDeclaration, kBorderTopIDs, CSS_SIDE_TOP);
case PROP_BORDER_BOTTOM_COLOR:
case PROP_BORDER_LEFT_COLOR:
case PROP_BORDER_RIGHT_COLOR:
case PROP_BORDER_TOP_COLOR:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HCK,
nsCSSProps::kBorderColorKTable, parsed);
case PROP_BORDER_BOTTOM_STYLE:
case PROP_BORDER_LEFT_STYLE:
case PROP_BORDER_RIGHT_STYLE:
case PROP_BORDER_TOP_STYLE:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HOK,
nsCSSProps::kBorderStyleKTable, parsed);
case PROP_BORDER_BOTTOM_WIDTH:
case PROP_BORDER_LEFT_WIDTH:
case PROP_BORDER_RIGHT_WIDTH:
case PROP_BORDER_TOP_WIDTH:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HKL,
nsCSSProps::kBorderWidthKTable, parsed);
case PROP_BORDER_WIDTH:
return ParseBorderWidth(aErrorCode, aDeclaration);
case PROP_BOTTOM:
case PROP_TOP:
case PROP_LEFT:
case PROP_RIGHT:
case PROP_HEIGHT:
case PROP_WIDTH:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_AHLP, nsnull, parsed);
case PROP_CAPTION_SIDE:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HK,
nsCSSProps::kCaptionSideKTable, parsed);
case PROP_CLEAR:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HOK,
nsCSSProps::kClearKTable, parsed);
case PROP_CLIP:
return ParseClip(aErrorCode, aDeclaration);
case PROP_COLOR:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HC, nsnull, parsed);
case PROP_CONTENT:
return ParseContent(aErrorCode, aDeclaration);
case PROP_COUNTER_INCREMENT:
case PROP_COUNTER_RESET:
return ParseCounterData(aErrorCode, aDeclaration, aPropID);
case PROP_CUE:
return ParseCue(aErrorCode, aDeclaration);
case PROP_CUE_AFTER:
case PROP_CUE_BEFORE:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HUO, nsnull, parsed);
case PROP_CURSOR:
return ParseCursor(aErrorCode, aDeclaration);
case PROP_DIRECTION:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HK,
nsCSSProps::kDirectionKTable, parsed);
case PROP_DISPLAY:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HOK,
nsCSSProps::kDisplayKTable, parsed);
case PROP_ELEVATION:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HK | VARIANT_ANGLE,
nsCSSProps::kElevationKTable, parsed);
case PROP_EMPTY_CELLS:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HK,
nsCSSProps::kEmptyCellsKTable, parsed);
case PROP_FILTER:
return ParseForegroundFilter(aErrorCode, aDeclaration);
case PROP_FLOAT:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HOK,
nsCSSProps::kFloatKTable, parsed);
case PROP_FONT:
return ParseFont(aErrorCode, aDeclaration);
case PROP_FONT_FAMILY:
return ParseFamily(aErrorCode, aDeclaration, aPropID);
case PROP_FONT_SIZE:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HKLP,
nsCSSProps::kFontSizeKTable, parsed);
case PROP_FONT_SIZE_ADJUST:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HON,
nsnull, parsed);
case PROP_FONT_STRETCH:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HMK,
nsCSSProps::kFontStretchKTable, parsed);
case PROP_FONT_STYLE:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HMK,
nsCSSProps::kFontStyleKTable, parsed);
case PROP_FONT_VARIANT:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HMK,
nsCSSProps::kFontVariantKTable, parsed);
case PROP_FONT_WEIGHT:
return ParseVariant(aErrorCode, aDeclaration, PROP_FONT_WEIGHT, VARIANT_HMKI,
nsCSSProps::kFontWeightKTable, parsed);
case PROP_LETTER_SPACING:
case PROP_WORD_SPACING:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HL | VARIANT_NORMAL, nsnull, parsed);
case PROP_LINE_HEIGHT:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HLPN | VARIANT_NORMAL,
nsnull, parsed);
case PROP_LIST_STYLE:
return ParseListStyle(aErrorCode, aDeclaration);
case PROP_LIST_STYLE_IMAGE:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HUO, nsnull, parsed);
case PROP_LIST_STYLE_POSITION:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HK,
nsCSSProps::kListStylePositionKTable, parsed);
case PROP_LIST_STYLE_TYPE:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HOK,
nsCSSProps::kListStyleKTable, parsed);
case PROP_MARGIN:
return ParseMargin(aErrorCode, aDeclaration);
case PROP_MARGIN_BOTTOM:
case PROP_MARGIN_LEFT:
case PROP_MARGIN_RIGHT:
case PROP_MARGIN_TOP:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_AHLP, nsnull, parsed);
case PROP_MARKER_OFFSET:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_AHL, nsnull, parsed);
case PROP_MARKS:
return ParseMarks(aErrorCode, aDeclaration);
case PROP_MAX_HEIGHT:
case PROP_MAX_WIDTH:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HLPO, nsnull, parsed);
case PROP_MIN_HEIGHT:
case PROP_MIN_WIDTH:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HLP, nsnull, parsed);
case PROP_OPACITY:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HPN, nsnull, parsed);
case PROP_ORPHANS:
case PROP_WIDOWS:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HI, nsnull, parsed);
case PROP_OUTLINE:
return ParseOutline(aErrorCode, aDeclaration);
case PROP_OUTLINE_COLOR:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HCK,
nsCSSProps::kOutlineColorKTable, parsed);
case PROP_OUTLINE_STYLE:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HOK,
nsCSSProps::kBorderStyleKTable, parsed);
case PROP_OUTLINE_WIDTH:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HKL,
nsCSSProps::kBorderWidthKTable, parsed);
case PROP_OVERFLOW:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_AHK,
nsCSSProps::kOverflowKTable, parsed);
case PROP_PADDING:
return ParsePadding(aErrorCode, aDeclaration);
case PROP_PADDING_BOTTOM:
case PROP_PADDING_LEFT:
case PROP_PADDING_RIGHT:
case PROP_PADDING_TOP:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HLP, nsnull, parsed);
case PROP_PAGE:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_AUTO | VARIANT_IDENTIFIER,
nsnull, parsed);
case PROP_PAGE_BREAK_AFTER:
case PROP_PAGE_BREAK_BEFORE:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_AHK,
nsCSSProps::kPageBreakKTable, parsed);
case PROP_PAGE_BREAK_INSIDE:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_AHK,
nsCSSProps::kPageBreakInsideKTable, parsed);
case PROP_PAUSE:
return ParsePause(aErrorCode, aDeclaration);
case PROP_PAUSE_AFTER:
case PROP_PAUSE_BEFORE:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HTP, nsnull, parsed);
case PROP_PITCH:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HKF,
nsCSSProps::kPitchKTable, parsed);
case PROP_PITCH_RANGE:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HN, nsnull, parsed);
case PROP_PLAY_DURING:
return ParsePlayDuring(aErrorCode, aDeclaration);
case PROP_POSITION:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HK,
nsCSSProps::kPositionKTable, parsed);
case PROP_QUOTES:
return ParseQuotes(aErrorCode, aDeclaration);
case PROP_RICHNESS:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HN, nsnull, parsed);
case PROP_SIZE:
return ParseSize(aErrorCode, aDeclaration);
case PROP_SPEAK:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HMK | VARIANT_NONE,
nsCSSProps::kSpeakKTable, parsed);
case PROP_SPEAK_HEADER:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HK,
nsCSSProps::kSpeakHeaderKTable, parsed);
case PROP_SPEAK_NUMERAL:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HK,
nsCSSProps::kSpeakNumeralKTable, parsed);
case PROP_SPEAK_PUNCTUATION:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HK,
nsCSSProps::kSpeakPunctuationKTable, parsed);
case PROP_SPEECH_RATE:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HN | VARIANT_KEYWORD,
nsCSSProps::kSpeechRateKTable, parsed);
case PROP_STRESS:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HN, nsnull, parsed);
case PROP_TABLE_LAYOUT:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_AHK,
nsCSSProps::kTableLayoutKTable, parsed);
case PROP_TEXT_ALIGN:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HK | VARIANT_STRING,
nsCSSProps::kTextAlignKTable, parsed);
case PROP_TEXT_DECORATION:
return ParseTextDecoration(aErrorCode, aDeclaration);
case PROP_TEXT_INDENT:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HLP, nsnull, parsed);
case PROP_TEXT_SHADOW:
return ParseTextShadow(aErrorCode, aDeclaration);
case PROP_TEXT_TRANSFORM:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HOK,
nsCSSProps::kTextTransformKTable, parsed);
case PROP_UNICODE_BIDI:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HMK,
nsCSSProps::kUnicodeBidiKTable, parsed);
case PROP_VERTICAL_ALIGN:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HKLP,
nsCSSProps::kVerticalAlignKTable, parsed);
case PROP_VISIBILITY:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HK,
nsCSSProps::kVisibilityKTable, parsed);
case PROP_VOICE_FAMILY:
return ParseFamily(aErrorCode, aDeclaration, aPropID);
case PROP_VOLUME:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HPN | VARIANT_KEYWORD,
nsCSSProps::kVolumeKTable, parsed);
case PROP_WHITE_SPACE:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_HMK,
nsCSSProps::kWhitespaceKTable, parsed);
case PROP_Z_INDEX:
return ParseVariant(aErrorCode, aDeclaration, aPropID, VARIANT_AHI, nsnull, parsed);
}
return PR_FALSE;
}
PRBool CSSParserImpl::ParseAzimuth(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration)
{
PRInt32 parsed;
if (ParseVariant(aErrorCode, aDeclaration, PROP_AZIMUTH, VARIANT_HK | VARIANT_ANGLE,
nsCSSProps::kAzimuthKTable, parsed)) {
if (VARIANT_KEYWORD == parsed) {
nsCSSValue value;
aDeclaration->GetValue(PROP_AZIMUTH, value);
PRInt32 intValue = value.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))) {
value.SetIntValue(intValue | enumValue, eCSSUnit_Enumerated);
aDeclaration->AppendValue(PROP_AZIMUTH, value);
return PR_TRUE;
}
// Put the unknown identifier back and return
UngetToken();
value.Reset();
aDeclaration->AppendValue(PROP_AZIMUTH, value); // clear what we got
return PR_FALSE;
}
}
}
return PR_TRUE;
}
return PR_FALSE;
}
PRBool CSSParserImpl::ParseBackground(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration)
{
static const PRInt32 kBackgroundIDs[] = {
PROP_BACKGROUND_COLOR,
PROP_BACKGROUND_IMAGE,
PROP_BACKGROUND_REPEAT,
PROP_BACKGROUND_ATTACHMENT,
PROP_BACKGROUND_POSITION,
// PROP_BACKGROUND_FILTER
};
PRInt32 found = ParseChoice(aErrorCode, aDeclaration, kBackgroundIDs, 5);
if (0 == found) {
return PR_FALSE;
}
if (1 == found) {
nsCSSValue value;
aDeclaration->GetValue(PROP_BACKGROUND_COLOR, value);
if (eCSSUnit_Inherit == value.GetUnit()) { // one inherit value, all inherit
aDeclaration->AppendValue(PROP_BACKGROUND_IMAGE, value);
aDeclaration->AppendValue(PROP_BACKGROUND_REPEAT, value);
aDeclaration->AppendValue(PROP_BACKGROUND_ATTACHMENT, value);
aDeclaration->AppendValue(PROP_BACKGROUND_X_POSITION, value);
aDeclaration->AppendValue(PROP_BACKGROUND_Y_POSITION, value);
// aDeclaration->AppendValue(PROP_BACKGROUND_FILTER, value);
return PR_TRUE;
}
}
// Provide missing values
if ((found & 1) == 0) {
aDeclaration->AppendValue(PROP_BACKGROUND_COLOR,
nsCSSValue(NS_STYLE_BG_COLOR_TRANSPARENT,
eCSSUnit_Enumerated));
}
if ((found & 2) == 0) {
aDeclaration->AppendValue(PROP_BACKGROUND_IMAGE,
nsCSSValue(eCSSUnit_None));
}
if ((found & 4) == 0) {
aDeclaration->AppendValue(PROP_BACKGROUND_REPEAT,
nsCSSValue(NS_STYLE_BG_REPEAT_XY,
eCSSUnit_Enumerated));
}
if ((found & 8) == 0) {
aDeclaration->AppendValue(PROP_BACKGROUND_ATTACHMENT,
nsCSSValue(NS_STYLE_BG_ATTACHMENT_SCROLL,
eCSSUnit_Enumerated));
}
if ((found & 16) == 0) {
nsCSSValue zero(0.0f, eCSSUnit_Percent);
aDeclaration->AppendValue(PROP_BACKGROUND_X_POSITION, zero);
aDeclaration->AppendValue(PROP_BACKGROUND_Y_POSITION, zero);
}
// XXX Note: no default for filter (yet)
return PR_TRUE;
}
// Bits used in determining which background position info we have
#define BG_CENTER 0
#define BG_TOP 1
#define BG_BOTTOM 2
#define BG_LEFT 4
#define BG_RIGHT 8
#define BG_CENTER1 16
#define BG_CENTER2 32
PRBool CSSParserImpl::ParseBackgroundPosition(PRInt32& aErrorCode,
nsICSSDeclaration* aDeclaration)
{
static const PRInt32 kBackgroundPositionIDs[] = {
PROP_BACKGROUND_X_POSITION,
PROP_BACKGROUND_Y_POSITION,
};
// Note: Don't change this table unless you update
// parseBackgroundPosition!
static const PRInt32 kBackgroundXYPositionKTable[] = {
KEYWORD_CENTER, BG_CENTER,
KEYWORD_TOP, BG_TOP,
KEYWORD_BOTTOM, BG_BOTTOM,
KEYWORD_LEFT, BG_LEFT,
KEYWORD_RIGHT, BG_RIGHT,
-1,
};
// First try a number or a length value
PRInt32 parsed;
if (ParseVariant(aErrorCode, aDeclaration, PROP_BACKGROUND_X_POSITION, VARIANT_HLP, nsnull, parsed)) {
if (VARIANT_INHERIT == parsed) { // both are inherited
aDeclaration->AppendValue(PROP_BACKGROUND_Y_POSITION, nsCSSValue(eCSSUnit_Inherit));
return PR_TRUE;
}
// We have one number/length. Get the optional second number/length.
if (ParseVariant(aErrorCode, aDeclaration, PROP_BACKGROUND_Y_POSITION, VARIANT_LP, nsnull, parsed)) {
// We have two numbers
return PR_TRUE;
}
// We have one number which is the x position. Create an value for
// the vertical position which is of value 50%
aDeclaration->AppendValue(PROP_BACKGROUND_Y_POSITION, nsCSSValue(0.5f, eCSSUnit_Percent));
// XXX shouldn't this be CENTER enum instead?
return PR_TRUE;
}
// Now try keywords. We do this manually to allow for the first
// appearance of "center" to apply to the either the x or y
// position (it's ambiguous so we have to disambiguate). Each
// allowed keyword value is assigned it's own bit. We don't allow
// any duplicate keywords other than center. We try to get two
// keywords but it's okay if there is only one.
PRInt32 mask = 0;
PRInt32 centerBit = BG_CENTER1;
for (PRInt32 i = 0; i < 2; i++) {
nsString* ident = NextIdent(aErrorCode);
if (nsnull == ident) {
break;
}
char cbuf[KEYWORD_BUFFER_SIZE];
ident->ToCString(cbuf, sizeof(cbuf));
PRInt32 index = SearchKeywordTable(nsCSSKeywords::LookupName(cbuf),
kBackgroundXYPositionKTable);
if (0 < index) {
PRInt32 bit = kBackgroundXYPositionKTable[index];
if (0 == bit) {
// Special hack for center bits: We can have two of them
mask |= centerBit;
centerBit <<= 1;
continue;
} else if ((mask & bit) != 0) {
// no duplicate values allowed (other than center)
return PR_FALSE;
}
mask |= bit;
} else {
UngetToken();
break;
}
}
// 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;
}
// Map good input
int xValue = 50;
if ((mask & (BG_LEFT | BG_RIGHT)) != 0) {
// We have an x value
xValue = ((mask & BG_LEFT) != 0) ? 0 : 100;
}
int yValue = 50;
if ((mask & (BG_TOP | BG_BOTTOM)) != 0) {
// We have a y value
yValue = ((mask & BG_TOP) != 0) ? 0 : 100;
}
// Create style values
aDeclaration->AppendValue(PROP_BACKGROUND_X_POSITION, nsCSSValue(xValue, eCSSUnit_Enumerated));
aDeclaration->AppendValue(PROP_BACKGROUND_Y_POSITION, nsCSSValue(yValue, eCSSUnit_Enumerated));
return PR_TRUE;
}
PRBool CSSParserImpl::ParseBackgroundFilter(PRInt32& aErrorCode,
nsICSSDeclaration* aDeclaration)
{
// XXX not yet supported
return PR_FALSE;
}
PRBool CSSParserImpl::ParseForegroundFilter(PRInt32& aErrorCode,
nsICSSDeclaration* aDeclaration)
{
// XXX not yet supported
return PR_FALSE;
}
// These must be in CSS order (top,right,bottom,left) for indexing to work
static const PRInt32 kBorderStyleIDs[] = {
PROP_BORDER_TOP_STYLE,
PROP_BORDER_RIGHT_STYLE,
PROP_BORDER_BOTTOM_STYLE,
PROP_BORDER_LEFT_STYLE
};
static const PRInt32 kBorderWidthIDs[] = {
PROP_BORDER_TOP_WIDTH,
PROP_BORDER_RIGHT_WIDTH,
PROP_BORDER_BOTTOM_WIDTH,
PROP_BORDER_LEFT_WIDTH
};
static const PRInt32 kBorderColorIDs[] = {
PROP_BORDER_TOP_COLOR,
PROP_BORDER_RIGHT_COLOR,
PROP_BORDER_BOTTOM_COLOR,
PROP_BORDER_LEFT_COLOR
};
PRBool CSSParserImpl::ParseBorder(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration)
{
static const PRInt32 kBorderIDs[] = {
PROP_BORDER_TOP_WIDTH, // only one value per property
PROP_BORDER_TOP_STYLE,
PROP_BORDER_TOP_COLOR
};
PRInt32 found = ParseChoice(aErrorCode, aDeclaration, kBorderIDs, 3);
if (0 == found) {
return PR_FALSE;
}
int index;
if (1 == found) { // only found width
nsCSSValue value;
aDeclaration->GetValue(PROP_BORDER_TOP_WIDTH, value);
if (eCSSUnit_Inherit == value.GetUnit()) { // one inherit value, all inherit
for (index = 0; index < 4; index++) {
aDeclaration->AppendValue(kBorderWidthIDs[index], value);
aDeclaration->AppendValue(kBorderStyleIDs[index], value);
aDeclaration->AppendValue(kBorderColorIDs[index], value);
}
return PR_TRUE;
}
}
if (0 == (found & 1)) {
// provide missing border width's
nsCSSValue medium(NS_STYLE_BORDER_WIDTH_MEDIUM, eCSSUnit_Enumerated);
for (index = 0; index < 4; index++) {
aDeclaration->AppendValue(kBorderWidthIDs[index], medium);
}
}
else { // copy top to other three sides
nsCSSValue value;
aDeclaration->GetValue(PROP_BORDER_TOP_WIDTH, value);
for (index = 1; index < 4; index++) {
aDeclaration->AppendValue(kBorderWidthIDs[index], value);
}
}
if (0 == (found & 2)) {
// provide missing border style's
nsCSSValue none(eCSSUnit_None);
for (index = 0; index < 4; index++) {
aDeclaration->AppendValue(kBorderStyleIDs[index], none);
}
}
else { // copy top to other three sides
nsCSSValue value;
aDeclaration->GetValue(PROP_BORDER_TOP_STYLE, value);
for (index = 1; index < 4; index++) {
aDeclaration->AppendValue(kBorderStyleIDs[index], value);
}
}
if (0 == (found & 4)) {
// clear missing color values so color property will be used
nsCSSValue null;
for (index = 0; index < 4; index++) {
aDeclaration->AppendValue(kBorderColorIDs[index], null);
}
}
else { // copy top to other three sides
nsCSSValue value;
aDeclaration->GetValue(PROP_BORDER_TOP_COLOR, value);
for (index = 1; index < 4; index++) {
aDeclaration->AppendValue(kBorderColorIDs[index], value);
}
}
return PR_TRUE;
}
PRBool CSSParserImpl::ParseBorderColor(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration)
{
return ParseBoxProperties(aErrorCode, aDeclaration, kBorderColorIDs);
}
PRBool CSSParserImpl::ParseBorderSpacing(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration)
{
PRInt32 parsed;
if (ParseVariant(aErrorCode, aDeclaration, PROP_BORDER_X_SPACING, VARIANT_HL, nsnull, parsed)) {
if (VARIANT_INHERIT == parsed) { // both are inherited
aDeclaration->AppendValue(PROP_BORDER_Y_SPACING, nsCSSValue(eCSSUnit_Inherit));
return PR_TRUE;
}
// We have one length. Get the optional second length.
if (ParseVariant(aErrorCode, aDeclaration, PROP_BORDER_Y_SPACING, VARIANT_LENGTH,
nsnull, parsed)) {
// We have two numbers
return PR_TRUE;
}
// We have one length which is the horizontal spacing. Create a value for
// the vertical spacing which is equal
nsCSSValue value;
aDeclaration->GetValue(PROP_BORDER_X_SPACING, value);
aDeclaration->AppendValue(PROP_BORDER_Y_SPACING, value);
return PR_TRUE;
}
return PR_FALSE;
}
PRBool CSSParserImpl::ParseBorderSide(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration,
const PRInt32 aPropIDs[], PRInt32 aSide)
{
PRInt32 found = ParseChoice(aErrorCode, aDeclaration, aPropIDs, 3);
if (0 == found) {
return PR_FALSE;
}
if (1 == found) {
nsCSSValue value;
aDeclaration->GetValue(aPropIDs[0], value);
if (eCSSUnit_Inherit == value.GetUnit()) { // one inherit value, all inherit
aDeclaration->AppendValue(aPropIDs[1], value);
aDeclaration->AppendValue(aPropIDs[2], value);
return PR_TRUE;
}
}
if ((found & 1) == 0) {
// Provide default border-width
aDeclaration->AppendValue(kBorderWidthIDs[aSide],
nsCSSValue(NS_STYLE_BORDER_WIDTH_MEDIUM, eCSSUnit_Enumerated));
}
if ((found & 2) == 0) {
// Provide default border-style
aDeclaration->AppendValue(kBorderStyleIDs[aSide], nsCSSValue(eCSSUnit_None));
}
if ((found & 4) == 0) {
// reset border-color so color property gets used
aDeclaration->AppendValue(kBorderColorIDs[aSide], nsCSSValue(eCSSUnit_Null));
}
return PR_TRUE;
}
PRBool CSSParserImpl::ParseBorderStyle(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration)
{
return ParseBoxProperties(aErrorCode, aDeclaration, kBorderStyleIDs);
}
PRBool CSSParserImpl::ParseBorderWidth(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration)
{
return ParseBoxProperties(aErrorCode, aDeclaration, kBorderWidthIDs);
}
PRBool CSSParserImpl::ParseClip(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration)
{
static const PRInt32 kClipIDs[] = {
PROP_CLIP_TOP,
PROP_CLIP_RIGHT,
PROP_CLIP_BOTTOM,
PROP_CLIP_LEFT
};
if (! GetToken(aErrorCode, PR_TRUE)) {
return PR_FALSE;
}
int index;
if ((eCSSToken_Ident == mToken.mType) &&
mToken.mIdent.EqualsIgnoreCase("auto")) {
nsCSSValue valueAuto(eCSSUnit_Auto);
for (index = 0; index < 4; index++) {
aDeclaration->AppendValue(kClipIDs[index], valueAuto);
}
return PR_TRUE;
} else if ((eCSSToken_Ident == mToken.mType) &&
mToken.mIdent.EqualsIgnoreCase("inherit")) {
nsCSSValue inherit(eCSSUnit_Inherit);
for (index = 0; index < 4; index++) {
aDeclaration->AppendValue(kClipIDs[index], inherit);
}
return PR_TRUE;
} else if ((eCSSToken_Function == mToken.mType) &&
mToken.mIdent.EqualsIgnoreCase("rect")) {
if (!ExpectSymbol(aErrorCode, '(', PR_TRUE)) {
return PR_FALSE;
}
for (index = 0; index < 4; index++) {
PRInt32 parsed;
if (! ParseVariant(aErrorCode, aDeclaration, kClipIDs[index], VARIANT_AL, nsnull, parsed)) {
return PR_FALSE;
// XXX need to reset values if failed
}
if (3 != index) {
// skip optional commas between elements
ExpectSymbol(aErrorCode, ',', PR_TRUE);
}
}
if (!ExpectSymbol(aErrorCode, ')', PR_TRUE)) {
return PR_FALSE;
}
return PR_TRUE;
} else {
UngetToken();
}
return PR_FALSE;
}
#define VARIANT_CONTENT (VARIANT_STRING | VARIANT_URL | VARIANT_COUNTER | VARIANT_ATTR | \
VARIANT_KEYWORD)
PRBool CSSParserImpl::ParseContent(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration)
{
PRInt32 parsed;
if (ParseVariant(aErrorCode, aDeclaration, PROP_CONTENT, VARIANT_CONTENT | VARIANT_INHERIT,
nsCSSProps::kContentKTable, parsed)) {
if (VARIANT_INHERIT != parsed) {
nsCSSContent* content = nsnull;
aDeclaration->GetData(kCSSContentSID, (nsCSSStruct**)&content);
if (nsnull != content) {
nsCSSValueList* list = content->mContent;
while (nsnull != content) {
if (ExpectEndProperty(aErrorCode, PR_TRUE)) {
return PR_TRUE;
}
nsCSSValue value;
if (ParseVariant(aErrorCode, value, VARIANT_CONTENT,
nsCSSProps::kContentKTable, parsed)) {
list->mNext = new nsCSSValueList();
list = list->mNext;
if (nsnull != list) {
list->mValue = value;
}
}
else {
break;
}
}
}
aDeclaration->AppendValue(PROP_CONTENT, nsCSSValue());
return PR_FALSE;
}
return PR_TRUE;
}
return PR_FALSE;
}
PRBool CSSParserImpl::ParseCounterData(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration,
PRInt32 aPropID)
{
nsString* ident = NextIdent(aErrorCode);
if (nsnull == ident) {
return PR_FALSE;
}
if (ident->EqualsIgnoreCase("none")) {
aDeclaration->AppendValue(aPropID, nsCSSValue(eCSSUnit_None));
}
else if (ident->EqualsIgnoreCase("inherit")) {
aDeclaration->AppendValue(aPropID, nsCSSValue(eCSSUnit_Inherit));
}
else {
aDeclaration->AppendValue(aPropID, nsCSSValue(*ident, eCSSUnit_String));
nsCSSContent* content = nsnull;
aDeclaration->GetData(kCSSContentSID, (nsCSSStruct**)&content);
if (nsnull != content) {
nsCSSCounterData* data = ((PROP_COUNTER_INCREMENT == aPropID) ?
content->mCounterIncrement : content->mCounterReset);
data->mValue.Reset();
while (nsnull != data) {
if (ExpectEndProperty(aErrorCode, PR_TRUE)) {
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)) {
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 {
break;
}
}
}
aDeclaration->AppendValue(aPropID, nsCSSValue()); // clear it
return PR_FALSE;
}
return PR_TRUE;
}
PRBool CSSParserImpl::ParseCue(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration)
{
if (ParseProperty(aErrorCode, aDeclaration, PROP_CUE_BEFORE)) {
if (! ParseProperty(aErrorCode, aDeclaration, PROP_CUE_AFTER)) {
nsCSSValue value;
aDeclaration->GetValue(PROP_CUE_BEFORE, value);
aDeclaration->AppendValue(PROP_CUE_AFTER, value);
}
return PR_TRUE;
}
return PR_FALSE;
}
PRBool CSSParserImpl::ParseCursor(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration)
{
PRInt32 parsed;
if (ParseVariant(aErrorCode, aDeclaration, PROP_CURSOR, VARIANT_AHUK,
nsCSSProps::kCursorKTable, parsed)) {
if (VARIANT_URL == parsed) {
nsCSSColor* color = nsnull;
aDeclaration->GetData(kCSSColorSID, (nsCSSStruct**)&color);
if (nsnull != color) {
nsCSSValueList* list = color->mCursor;
while (nsnull != list) {
if ((VARIANT_URL != parsed) || ExpectEndProperty(aErrorCode, PR_TRUE)) {
return PR_TRUE;
}
nsCSSValue value;
if (ParseVariant(aErrorCode, value, VARIANT_AHUK,
nsCSSProps::kCursorKTable, parsed)) {
list->mNext = new nsCSSValueList();
list = list->mNext;
if (nsnull != list) {
list->mValue = value;
}
}
else {
break;
}
}
}
aDeclaration->AppendValue(PROP_CURSOR, nsCSSValue());
return PR_FALSE;
}
return PR_TRUE;
}
return PR_FALSE;
}
PRBool CSSParserImpl::ParseFont(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration)
{
static const PRInt32 fontIDs[] = {
PROP_FONT_STYLE,
PROP_FONT_VARIANT,
PROP_FONT_WEIGHT
};
PRInt32 parsed;
if (ParseVariant(aErrorCode, aDeclaration, PROP_FONT_FAMILY, VARIANT_HK,
nsCSSProps::kFontKTable, parsed)) {
if (VARIANT_INHERIT == parsed) {
nsCSSValue inherit(eCSSUnit_Inherit);
aDeclaration->AppendValue(PROP_FONT_STYLE, inherit);
aDeclaration->AppendValue(PROP_FONT_VARIANT, inherit);
aDeclaration->AppendValue(PROP_FONT_WEIGHT, inherit);
aDeclaration->AppendValue(PROP_FONT_SIZE, inherit);
aDeclaration->AppendValue(PROP_LINE_HEIGHT, inherit);
}
return PR_TRUE;
}
// Get optional font-style, font-variant and font-weight (in any order)
PRInt32 found = ParseChoice(aErrorCode, aDeclaration, fontIDs, 3);
nsCSSValue normal(eCSSUnit_Normal);
if ((found & 1) == 0) {
// Provide default font-style
aDeclaration->AppendValue(fontIDs[0], normal);
}
if ((found & 2) == 0) {
// Provide default font-variant
aDeclaration->AppendValue(fontIDs[1], normal);
}
if ((found & 4) == 0) {
// Provide default font-weight
aDeclaration->AppendValue(fontIDs[2], normal);
}
// Get mandatory font-size
if (!ParseVariant(aErrorCode, aDeclaration, PROP_FONT_SIZE,
VARIANT_HKLP, nsCSSProps::kFontSizeKTable, parsed)) {
return PR_FALSE;
}
// Get optional "/" line-height
if (ExpectSymbol(aErrorCode, '/', PR_TRUE)) {
if (!ParseVariant(aErrorCode, aDeclaration, PROP_LINE_HEIGHT,
VARIANT_HLPN | VARIANT_NORMAL, nsnull, parsed)) {
return PR_FALSE;
}
}
else {
aDeclaration->AppendValue(PROP_LINE_HEIGHT, normal);
}
// Get final mandatory font-family
return ParseFamily(aErrorCode, aDeclaration, PROP_FONT_FAMILY);
}
PRBool CSSParserImpl::ParseFamily(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration,
PRInt32 aPropID)
{
nsCSSToken* tk = &mToken;
nsAutoString family;
PRBool firstOne = PR_TRUE;
for (;;) {
if (!GetToken(aErrorCode, PR_TRUE)) {
break;
}
if (eCSSToken_Ident == tk->mType) {
if (firstOne) {
if (tk->mIdent.EqualsIgnoreCase("inherit")) {
aDeclaration->AppendValue(aPropID, nsCSSValue(eCSSUnit_Inherit));
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.Length() == 0) {
return PR_FALSE;
}
aDeclaration->AppendValue(aPropID, nsCSSValue(family, eCSSUnit_String));
return PR_TRUE;
}
PRBool CSSParserImpl::ParseListStyle(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration)
{
static const PRInt32 listStyleIDs[] = {
PROP_LIST_STYLE_TYPE,
PROP_LIST_STYLE_POSITION,
PROP_LIST_STYLE_IMAGE
};
int found = ParseChoice(aErrorCode, aDeclaration, listStyleIDs, 3);
if (found == 0) {
return PR_FALSE;
}
if (1 == found) {
nsCSSValue value;
aDeclaration->GetValue(PROP_LIST_STYLE_TYPE, value);
if (eCSSUnit_Inherit == value.GetUnit()) { // one inherit value, all inherit
aDeclaration->AppendValue(PROP_LIST_STYLE_POSITION, value);
aDeclaration->AppendValue(PROP_LIST_STYLE_IMAGE, value);
return PR_TRUE;
}
}
// Provide default values
if ((found & 1) == 0) {
aDeclaration->AppendValue(PROP_LIST_STYLE_TYPE,
nsCSSValue(NS_STYLE_LIST_STYLE_DISC, eCSSUnit_Enumerated));
}
if ((found & 2) == 0) {
aDeclaration->AppendValue(PROP_LIST_STYLE_POSITION,
nsCSSValue(NS_STYLE_LIST_STYLE_POSITION_OUTSIDE, eCSSUnit_Enumerated));
}
if ((found & 4) == 0) {
aDeclaration->AppendValue(PROP_LIST_STYLE_IMAGE, nsCSSValue(eCSSUnit_None));
}
return PR_TRUE;
}
PRBool CSSParserImpl::ParseMargin(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration)
{
static const PRInt32 kMarginSideIDs[] = {
PROP_MARGIN_TOP,
PROP_MARGIN_RIGHT,
PROP_MARGIN_BOTTOM,
PROP_MARGIN_LEFT
};
return ParseBoxProperties(aErrorCode, aDeclaration, kMarginSideIDs);
}
PRBool CSSParserImpl::ParseMarks(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration)
{
PRInt32 parsed;
if (ParseVariant(aErrorCode, aDeclaration, PROP_MARKS, VARIANT_HOK,
nsCSSProps::kPageMarksKTable, parsed)) {
if (VARIANT_KEYWORD == parsed) {
nsCSSValue second;
if (ParseEnum(aErrorCode, second, nsCSSProps::kPageMarksKTable)) {
nsCSSValue value;
aDeclaration->GetValue(PROP_MARKS, value);
value.SetIntValue(value.GetIntValue() | second.GetIntValue(), eCSSUnit_Enumerated);
aDeclaration->AppendValue(PROP_MARKS, value);
}
}
return PR_TRUE;
}
return PR_FALSE;
}
PRBool CSSParserImpl::ParseOutline(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration)
{
static const PRInt32 kOutlineIDs[] = {
PROP_OUTLINE_COLOR,
PROP_OUTLINE_STYLE,
PROP_OUTLINE_WIDTH
};
int found = ParseChoice(aErrorCode, aDeclaration, kOutlineIDs, 3);
if (found == 0) {
return PR_FALSE;
}
if (1 == found) {
nsCSSValue value;
aDeclaration->GetValue(PROP_OUTLINE_COLOR, value);
if (eCSSUnit_Inherit == value.GetUnit()) { // one inherit value, all inherit
aDeclaration->AppendValue(PROP_OUTLINE_STYLE, value);
aDeclaration->AppendValue(PROP_OUTLINE_WIDTH, value);
return PR_TRUE;
}
}
// Provide default values
if ((found & 1) == 0) {
aDeclaration->AppendValue(PROP_OUTLINE_COLOR,
nsCSSValue(NS_STYLE_COLOR_INVERT, eCSSUnit_Enumerated));
}
if ((found & 2) == 0) {
aDeclaration->AppendValue(PROP_OUTLINE_STYLE, nsCSSValue(eCSSUnit_None));
}
if ((found & 4) == 0) {
aDeclaration->AppendValue(PROP_OUTLINE_WIDTH,
nsCSSValue(NS_STYLE_BORDER_WIDTH_MEDIUM, eCSSUnit_Enumerated));
}
return PR_TRUE;
}
PRBool CSSParserImpl::ParsePadding(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration)
{
static const PRInt32 kPaddingSideIDs[] = {
PROP_PADDING_TOP,
PROP_PADDING_RIGHT,
PROP_PADDING_BOTTOM,
PROP_PADDING_LEFT
};
return ParseBoxProperties(aErrorCode, aDeclaration, kPaddingSideIDs);
}
PRBool CSSParserImpl::ParsePause(PRInt32& aErrorCode,
nsICSSDeclaration* aDeclaration)
{
if (ParseProperty(aErrorCode, aDeclaration, PROP_PAUSE_BEFORE)) {
if (! ParseProperty(aErrorCode, aDeclaration, PROP_PAUSE_AFTER)) {
nsCSSValue value;
aDeclaration->GetValue(PROP_PAUSE_BEFORE, value);
aDeclaration->AppendValue(PROP_PAUSE_AFTER, value);
}
return PR_TRUE;
}
return PR_FALSE;
}
PRBool CSSParserImpl::ParsePlayDuring(PRInt32& aErrorCode,
nsICSSDeclaration* aDeclaration)
{
PRInt32 parsed;
if (ParseVariant(aErrorCode, aDeclaration, PROP_PLAY_DURING, VARIANT_AHUO,
nsnull, parsed)) {
if (VARIANT_URL == parsed) {
nsCSSValue value;
if (ParseEnum(aErrorCode, value, nsCSSProps::kPlayDuringKTable)) {
PRInt32 intValue = value.GetIntValue();
if (ParseEnum(aErrorCode, value, nsCSSProps::kPlayDuringKTable)) {
value.SetIntValue(intValue | value.GetIntValue(), eCSSUnit_Enumerated);
}
aDeclaration->AppendValue(PROP_PLAY_DURING_FLAGS, value);
}
}
return PR_TRUE;
}
return PR_FALSE;
}
PRBool CSSParserImpl::ParseQuotes(PRInt32& aErrorCode,
nsICSSDeclaration* aDeclaration)
{
PRInt32 parsed;
if (ParseVariant(aErrorCode, aDeclaration, PROP_QUOTES_OPEN, VARIANT_HOS,
nsnull, parsed)) {
if (VARIANT_STRING == parsed) {
nsCSSContent* content = nsnull;
aDeclaration->GetData(kCSSContentSID, (nsCSSStruct**)&content);
if (nsnull != content) {
nsCSSQuotes* quotes = content->mQuotes;
while (nsnull != quotes) {
// get close
if (ParseVariant(aErrorCode, quotes->mClose, VARIANT_STRING, nsnull, parsed)) {
if (ExpectEndProperty(aErrorCode, PR_TRUE)) {
return PR_TRUE;
}
// look for another open
nsCSSValue value;
if (ParseVariant(aErrorCode, value, VARIANT_STRING, nsnull, parsed)) {
quotes->mNext = new nsCSSQuotes();
quotes = quotes->mNext;
if (nsnull != quotes) {
quotes->mOpen = value;
continue;
}
}
}
break;
}
}
aDeclaration->AppendValue(PROP_QUOTES_OPEN, nsCSSValue());
aDeclaration->AppendValue(PROP_QUOTES_CLOSE, nsCSSValue());
return PR_FALSE;
}
return PR_TRUE;
}
return PR_FALSE;
}
PRBool CSSParserImpl::ParseSize(PRInt32& aErrorCode, nsICSSDeclaration* aDeclaration)
{
PRInt32 parsed;
if (ParseVariant (aErrorCode, aDeclaration, PROP_SIZE_WIDTH, VARIANT_AHKL,
nsCSSProps::kPageSizeKTable, parsed)) {
if (VARIANT_LENGTH == parsed) {
if (ParseVariant(aErrorCode, aDeclaration, PROP_SIZE_HEIGHT, VARIANT_LENGTH,
nsnull, parsed)) {
return PR_TRUE;
}
}
nsCSSValue value;
aDeclaration->GetValue(PROP_SIZE_WIDTH, value);
aDeclaration->AppendValue(PROP_SIZE_HEIGHT, value);
return PR_TRUE;
}
return PR_FALSE;
}
PRBool CSSParserImpl::ParseTextDecoration(PRInt32& aErrorCode,
nsICSSDeclaration* aDeclaration)
{
PRInt32 parsed;
if (ParseVariant(aErrorCode, aDeclaration, PROP_TEXT_DECORATION, VARIANT_HOK,
nsCSSProps::kTextDecorationKTable, parsed)) {
if (VARIANT_KEYWORD == parsed) { // look for more keywords
nsCSSValue value;
aDeclaration->GetValue(PROP_TEXT_DECORATION, value);
PRInt32 intValue = value.GetIntValue();
int index;
for (index = 0; index < 3; index++) {
if (ParseEnum(aErrorCode, value, nsCSSProps::kTextDecorationKTable)) {
intValue |= value.GetIntValue();
}
else {
break;
}
}
value.SetIntValue(intValue, eCSSUnit_Enumerated);
aDeclaration->AppendValue(PROP_TEXT_DECORATION, value);
}
return PR_TRUE;
}
return PR_FALSE;
}
PRBool CSSParserImpl::ParseTextShadow(PRInt32& aErrorCode,
nsICSSDeclaration* aDeclaration)
{
PRInt32 parsed;
if (ParseVariant(aErrorCode, aDeclaration, PROP_TEXT_SHADOW_X,
VARIANT_HC | VARIANT_LENGTH | VARIANT_NONE,
nsnull, parsed)) {
if ((VARIANT_COLOR == parsed) || (VARIANT_LENGTH == parsed)) {
nsCSSText* text;
aDeclaration->GetData(kCSSTextSID, (nsCSSStruct**)&text);
if (nsnull != text) {
nsCSSShadow* shadow = text->mTextShadow;
while (nsnull != shadow) {
nsCSSValue value;
PRBool haveColor = PR_FALSE;
if (VARIANT_COLOR == parsed) {
haveColor = PR_TRUE;
shadow->mColor = shadow->mXOffset;
shadow->mXOffset.Reset();
if (ParseVariant(aErrorCode, value, VARIANT_LENGTH, nsnull, parsed)) {
shadow->mXOffset = value;
}
else {
break;
}
}
if (ParseVariant(aErrorCode, value, VARIANT_LENGTH, nsnull, parsed)) {
shadow->mYOffset = value;
}
else {
break;
}
if (ParseVariant(aErrorCode, value, VARIANT_LENGTH, nsnull, parsed)) {
shadow->mRadius = value;
} // optional
if (PR_FALSE == haveColor) {
if (ParseVariant(aErrorCode, value, VARIANT_COLOR, nsnull, parsed)) {
shadow->mColor = value;
}
}
if (ExpectSymbol(aErrorCode, ',', PR_TRUE)) {
shadow->mNext = new nsCSSShadow();
shadow = shadow->mNext;
if ((nsnull != shadow) &&
ParseVariant(aErrorCode, value, VARIANT_COLOR | VARIANT_LENGTH,
nsnull, parsed)) {
shadow->mXOffset = value;
}
else {
break;
}
}
else {
if (ExpectEndProperty(aErrorCode, PR_TRUE)) {
return PR_TRUE;
}
break;
}
}
}
nsCSSValue nullValue;
aDeclaration->AppendValue(PROP_TEXT_SHADOW_COLOR, nullValue);
aDeclaration->AppendValue(PROP_TEXT_SHADOW_X, nullValue);
aDeclaration->AppendValue(PROP_TEXT_SHADOW_Y, nullValue);
aDeclaration->AppendValue(PROP_TEXT_SHADOW_RADIUS, nullValue);
return PR_FALSE;
}
return PR_TRUE;
}
return PR_FALSE;
}
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