/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* ***** BEGIN LICENSE BLOCK ***** * Version: NPL 1.1/GPL 2.0/LGPL 2.1 * * The contents of this file are subject to the Netscape 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/NPL/ * * 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 * Daniel Glazman * L. David Baron * * * Alternatively, the contents of this file may be used under the terms of * either 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 NPL, 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 NPL, 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 "nsICSSCharsetRule.h" #include "nsICSSNameSpaceRule.h" #include "nsIUnicharInputStream.h" #include "nsIStyleSet.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 "nsColor.h" #include "nsStyleConsts.h" #include "nsCSSAtoms.h" #include "nsINameSpaceManager.h" #include "nsINameSpace.h" #include "nsThemeConstants.h" // XXX TODO: // - rework aErrorCode stuff: switch over to nsresult // verify ! is followed by important and nothing else #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) MOZ_DECL_CTOR_COUNTER(SelectorList) // e.g. "P B, H1 B { ... }" has a selector list with two elements, // each of which has two selectors. struct SelectorList { SelectorList(void); ~SelectorList(void); void AddSelector(const nsCSSSelector& aSelector); #ifdef NS_DEBUG void Dump(void); #endif nsCSSSelector* mSelectors; PRInt32 mWeight; SelectorList* mNext; }; SelectorList::SelectorList(void) : mSelectors(nsnull), mNext(nsnull) { MOZ_COUNT_CTOR(SelectorList); } SelectorList::~SelectorList() { MOZ_COUNT_DTOR(SelectorList); nsCSSSelector* sel = mSelectors; while (nsnull != sel) { nsCSSSelector* dead = sel; sel = sel->mNext; delete dead; } if (nsnull != mNext) { delete mNext; } } void SelectorList::AddSelector(const nsCSSSelector& aSelector) { // prepend to list nsCSSSelector* newSel = new nsCSSSelector(aSelector); if (nsnull != newSel) { newSel->mNext = mSelectors; mSelectors = newSel; } } #ifdef NS_DEBUG void SelectorList::Dump() { } #endif //---------------------------------------------------------------------- // Your basic top-down recursive descent style parser class CSSParserImpl : public nsICSSParser { public: CSSParserImpl(); virtual ~CSSParserImpl(); NS_DECL_ISUPPORTS NS_IMETHOD Init(nsICSSStyleSheet* aSheet); NS_IMETHOD GetInfoMask(PRUint32& aResult); 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 nsAReadableString& aAttributeValue, nsIURI* aBaseURL, nsIStyleRule** aResult); NS_IMETHOD ParseAndAppendDeclaration(const nsAReadableString& aBuffer, nsIURI* aBaseURL, nsCSSDeclaration* aDeclaration, PRBool aParseOnlyOneDecl, PRInt32* aHint); NS_IMETHOD ParseRule(nsAReadableString& aRule, nsIURI* aBaseURL, nsISupportsArray** aResult); NS_IMETHOD ParseProperty(const nsAReadableString& aPropName, const nsAReadableString& aPropValue, nsIURI* aBaseURL, nsCSSDeclaration* aDeclaration, PRInt32* aHint); NS_IMETHOD GetCharset(/*out*/nsAWritableString &aCharsetDest) const; // sets the out-param to the current charset, as set by SetCharset NS_IMETHOD SetCharset(/*in*/ const nsAReadableString &aCharsetSrc); // NOTE: SetCharset expects the charset to be the preferred charset // and it just records the string exactly as passed in (no alias resolution) void AppendRule(nsICSSRule* aRule); protected: nsresult InitScanner(nsIUnicharInputStream* aInput, nsIURI* aURI); nsresult ReleaseScanner(void); PRBool GetToken(PRInt32& aErrorCode, PRBool aSkipWS); PRBool GetURLToken(PRInt32& aErrorCode, PRBool aSkipWS); void UngetToken(); PRBool ExpectSymbol(PRInt32& aErrorCode, PRUnichar aSymbol, PRBool aSkipWS); PRBool ExpectEndProperty(PRInt32& aErrorCode, PRBool aSkipWS); nsString* NextIdent(PRInt32& aErrorCode); void SkipUntil(PRInt32& aErrorCode, PRUnichar aStopSymbol); void SkipRuleSet(PRInt32& aErrorCode); PRBool SkipAtRule(PRInt32& aErrorCode); PRBool SkipDeclaration(PRInt32& aErrorCode, PRBool aCheckForBraces); PRBool PushGroup(nsICSSGroupRule* aRule); void PopGroup(void); PRBool ParseRuleSet(PRInt32& aErrorCode, RuleAppendFunc aAppendFunc, void* aProcessData); PRBool ParseAtRule(PRInt32& aErrorCode, RuleAppendFunc aAppendFunc, void* aProcessData); PRBool ParseCharsetRule(PRInt32& aErrorCode, RuleAppendFunc aAppendFunc, void* aProcessData); PRBool ParseImportRule(PRInt32& aErrorCode, RuleAppendFunc aAppendFunc, void* aProcessData); PRBool GatherMedia(PRInt32& aErrorCode, nsString& aMedia, nsISupportsArray* aMediaAtoms); PRBool ProcessImport(PRInt32& aErrorCode, const nsString& aURLSpec, const nsString& aMedia, RuleAppendFunc aAppendFunc, void* aProcessData); PRBool ParseMediaRule(PRInt32& aErrorCode, RuleAppendFunc aAppendFunc, void* aProcessData); PRBool ParseNameSpaceRule(PRInt32& aErrorCode, RuleAppendFunc aAppendFunc, void* aProcessData); PRBool ProcessNameSpace(PRInt32& aErrorCode, const nsString& aPrefix, const nsString& aURLSpec, RuleAppendFunc aAppendFunc, void* aProcessData); PRBool ParseFontFaceRule(PRInt32& aErrorCode, RuleAppendFunc aAppendFunc, void* aProcessData); PRBool ParsePageRule(PRInt32& aErrorCode, RuleAppendFunc aAppendFunc, void* aProcessData); void ParseIDSelector(PRInt32& aDataMask, nsCSSSelector& aSelector, PRInt32& aParsingStatus, PRInt32& aErrorCode); void ParseClassSelector(PRInt32& aDataMask, nsCSSSelector& aSelector, PRInt32& aParsingStatus, PRInt32& aErrorCode); void ParsePseudoSelector(PRInt32& aDataMask, nsCSSSelector& aSelector, PRInt32& aParsingStatus, PRInt32& aErrorCode, PRBool aIsNegated); void ParseAttributeSelector(PRInt32& aDataMask, nsCSSSelector& aSelector, PRInt32& aParsingStatus, PRInt32& aErrorCode); void ParseTypeOrUniversalSelector(PRInt32& aDataMask, nsCSSSelector& aSelector, PRInt32& aParsingStatus, PRInt32& aErrorCode, PRBool aIsNegated); void ParseNegatedSimpleSelector(PRInt32& aDataMask, nsCSSSelector& aSelector, PRInt32& aParsingStatus, PRInt32& aErrorCode); PRBool ParseSelectorList(PRInt32& aErrorCode, SelectorList*& aListHead); PRBool ParseSelectorGroup(PRInt32& aErrorCode, SelectorList*& aListHead); PRBool ParseSelector(PRInt32& aErrorCode, nsCSSSelector& aSelectorResult); nsCSSDeclaration* ParseDeclarationBlock(PRInt32& aErrorCode, PRBool aCheckForBraces); PRBool ParseDeclaration(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRBool aCheckForBraces, PRInt32& aChangeHint); PRBool ParseProperty(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, nsCSSProperty aPropID, PRInt32& aChangeHint); PRBool ParseSingleValueProperty(PRInt32& aErrorCode, nsCSSValue& aValue, nsCSSProperty aPropID); #ifdef INCLUDE_XUL PRBool ParseOutlinerPseudoElement(PRInt32& aErrorCode, nsCSSSelector& aSelector); #endif // Property specific parsing routines PRBool ParseAppearance(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint); PRBool ParseAzimuth(PRInt32& aErrorCode, nsCSSValue& aValue); PRBool ParseBackground(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint); PRBool ParseBackgroundPosition(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint); PRBool ParseBorder(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint); PRBool ParseBorderColor(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint); PRBool ParseBorderColors(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint, nsCSSProperty aProperty); PRBool ParseBorderSpacing(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint); PRBool ParseBorderSide(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, const nsCSSProperty aPropIDs[], PRInt32& aChangeHint); PRBool ParseBorderStyle(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint); PRBool ParseBorderWidth(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint); PRBool ParseBorderRadius(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint); #ifdef ENABLE_OUTLINE PRBool ParseOutlineRadius(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint); #endif PRBool ParseClip(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint); PRBool ParseContent(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint); PRBool ParseCounterData(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, nsCSSProperty aPropID, PRInt32& aChangeHint); PRBool ParseCue(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint); PRBool ParseCursor(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint); PRBool ParseFont(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint); PRBool ParseFontWeight(PRInt32& aErrorCode, nsCSSValue& aValue); PRBool ParseFamily(PRInt32& aErrorCode, nsCSSValue& aValue); PRBool ParseImageRegion(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint); PRBool ParseListStyle(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint); PRBool ParseMargin(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint); PRBool ParseMarks(PRInt32& aErrorCode, nsCSSValue& aValue); #ifdef ENABLE_OUTLINE PRBool ParseOutline(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint); #endif PRBool ParsePadding(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint); PRBool ParsePause(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint); PRBool ParsePlayDuring(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint); PRBool ParseQuotes(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint); PRBool ParseSize(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint); PRBool ParseTextDecoration(PRInt32& aErrorCode, nsCSSValue& aValue); PRBool ParseTextShadow(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint); // Reused utility parsing routines nsresult AppendValue(nsCSSDeclaration* aDeclaration, nsCSSProperty aPropID, const nsCSSValue& aValue, PRInt32& aChangeHint); PRBool ParseBoxProperties(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, const nsCSSProperty aPropIDs[], PRInt32& aChangeHint); PRInt32 ParseChoice(PRInt32& aErrorCode, nsCSSValue aValues[], const nsCSSProperty 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(nsCSSKeyword aKeyword, const PRInt32 aTable[]); PRBool ParseVariant(PRInt32& aErrorCode, nsCSSValue& aValue, PRInt32 aVariantMask, const PRInt32 aKeywordTable[]); PRBool ParsePositiveVariant(PRInt32& aErrorCode, nsCSSValue& aValue, PRInt32 aVariantMask, const PRInt32 aKeywordTable[]); PRBool ParseCounter(PRInt32& aErrorCode, nsCSSValue& aValue); PRBool ParseAttr(PRInt32& aErrorCode, nsCSSValue& aValue); PRBool ParseURL(PRInt32& aErrorCode, nsCSSValue& aValue); PRBool TranslateDimension(PRInt32& aErrorCode, nsCSSValue& aValue, PRInt32 aVariantMask, float aNumber, const nsString& aUnit); // 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; nsIURI* mURL; nsICSSStyleSheet* mSheet; PRInt32 mChildSheetCount; nsICSSLoader* mChildLoader; // not ref counted, it owns us enum nsCSSSection { eCSSSection_Charset, eCSSSection_Import, eCSSSection_NameSpace, eCSSSection_General }; nsCSSSection mSection; PRBool mNavQuirkMode; PRBool mCaseSensitive; nsINameSpace* mNameSpace; nsISupportsArray* mGroupStack; nsString mCharset; // the charset we are using PRBool mParsingCompoundProperty; void SetParsingCompoundProperty(PRBool aBool) {mParsingCompoundProperty = aBool;}; PRBool IsParsingCompoundProperty(void) {return mParsingCompoundProperty;}; }; 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); } NS_EXPORT 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() \ mScanner->AddToError(NS_LITERAL_STRING("Unexpected end of file")) #define REPORT_UNEXPECTED_TOKEN(_reas) \ ReportUnexpectedToken(mScanner,mToken,_reas) #define OUTPUT_ERROR() \ mScanner->OutputError() #define CLEAR_ERROR() \ mScanner->ClearError() static void ReportUnexpectedToken(nsCSSScanner *sc, nsCSSToken& tok, const nsAReadableString& err) { nsAutoString error(err + NS_LITERAL_STRING(" '")); tok.AppendToString(error); error += NS_LITERAL_STRING("'."); sc->AddToError(error); } #else #define REPORT_UNEXPECTED(_err) #define REPORT_UNEXPECTED_EOF() #define REPORT_UNEXPECTED_TOKEN(_reas) #define OUTPUT_ERROR() #define CLEAR_ERROR() #endif CSSParserImpl::CSSParserImpl() : mToken(), mHavePushBack(PR_FALSE), mScanner(nsnull), mURL(nsnull), mSheet(nsnull), mChildSheetCount(0), mChildLoader(nsnull), mSection(eCSSSection_Charset), mNavQuirkMode(PR_FALSE), mCaseSensitive(PR_FALSE), mNameSpace(nsnull), mGroupStack(nsnull), mParsingCompoundProperty(PR_FALSE) { NS_INIT_REFCNT(); // set the default charset mCharset.Assign(NS_LITERAL_STRING("ISO-8859-1")); } NS_IMETHODIMP CSSParserImpl::Init(nsICSSStyleSheet* aSheet) { NS_IF_RELEASE(mGroupStack); NS_IF_RELEASE(mNameSpace); NS_IF_RELEASE(mSheet); mSheet = aSheet; if (mSheet) { NS_ADDREF(aSheet); mSheet->StyleSheetCount(mChildSheetCount); mSheet->GetNameSpace(mNameSpace); } return NS_OK; } NS_IMPL_ISUPPORTS1(CSSParserImpl, nsICSSParser) CSSParserImpl::~CSSParserImpl() { NS_IF_RELEASE(mGroupStack); NS_IF_RELEASE(mNameSpace); NS_IF_RELEASE(mSheet); } NS_IMETHODIMP CSSParserImpl::GetInfoMask(PRUint32& aResult) { aResult = NS_CSS_GETINFO_CSS1 | NS_CSS_GETINFO_CSSP; return NS_OK; } 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 NS_IF_RELEASE(mGroupStack); NS_IF_RELEASE(mNameSpace); NS_IF_RELEASE(mSheet); mSheet = aSheet; NS_ADDREF(mSheet); mSheet->StyleSheetCount(mChildSheetCount); mSheet->GetNameSpace(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); NS_IF_RELEASE(mURL); mURL = aURI; NS_IF_ADDREF(mURL); mHavePushBack = PR_FALSE; return NS_OK; } nsresult CSSParserImpl::ReleaseScanner(void) { if (mScanner) { delete mScanner; mScanner = nsnull; } NS_IF_RELEASE(mURL); return NS_OK; } NS_IMETHODIMP CSSParserImpl::Parse(nsIUnicharInputStream* aInput, nsIURI* aInputURL, nsICSSStyleSheet*& aResult) { NS_ASSERTION(nsnull != aInputURL, "need base URL"); if (! mSheet) { NS_NewCSSStyleSheet(&mSheet, aInputURL); mChildSheetCount = 0; } if (! mSheet) { return NS_ERROR_OUT_OF_MEMORY; } PRInt32 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 nsAReadableString& aAttributeValue, nsIURI* aBaseURL, nsIStyleRule** 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; PRInt32 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 (nsnull != declaration) { // Create a style rule for the delcaration nsICSSStyleRule* rule = nsnull; NS_NewCSSStyleRule(&rule, nsCSSSelector()); rule->SetDeclaration(declaration); *aResult = rule; } else { *aResult = nsnull; } ReleaseScanner(); return NS_OK; } NS_IMETHODIMP CSSParserImpl::ParseAndAppendDeclaration(const nsAReadableString& aBuffer, nsIURI* aBaseURL, nsCSSDeclaration* aDeclaration, PRBool aParseOnlyOneDecl, PRInt32* aHint) { // NS_ASSERTION(nsnull != aBaseURL, "need base URL"); 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; PRInt32 errorCode = NS_OK; PRInt32 hint = NS_STYLE_HINT_NONE; if (nsnull != aHint) { *aHint = hint; } do { if (ParseDeclaration(errorCode, aDeclaration, PR_FALSE, hint)) { if (aHint && hint > *aHint) { *aHint = hint; } } else { if (errorCode != -1) { // -1 means EOF so we ignore that rv = errorCode; } if (NS_FAILED(errorCode)) break; } } while (!aParseOnlyOneDecl); ReleaseScanner(); return rv; } NS_IMETHODIMP CSSParserImpl::ParseRule(nsAReadableString& 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 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)) { return rv; } mSection = eCSSSection_Charset; // callers are responsible for rejecting invalid rules. PRInt32 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; } NS_IMETHODIMP CSSParserImpl::ParseProperty(const nsAReadableString& aPropName, const nsAReadableString& aPropValue, nsIURI* aBaseURL, nsCSSDeclaration* aDeclaration, PRInt32* aHint) { NS_ASSERTION(nsnull != aBaseURL, "need base URL"); NS_ASSERTION(nsnull != aDeclaration, "Need declaration to parse into!"); nsString* str = new nsAutoString(aPropValue); if (!str) { return NS_ERROR_OUT_OF_MEMORY; } nsCOMPtr 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; PRInt32 errorCode = NS_OK; PRInt32 hint = NS_STYLE_HINT_NONE; if (aHint) { *aHint = hint; } nsCSSProperty propID = nsCSSProps::LookupProperty(aPropName); if (eCSSProperty_UNKNOWN == propID) { // unknown property REPORT_UNEXPECTED(NS_LITERAL_STRING("Unknown property '") + aPropName + NS_LITERAL_STRING("'. Declaration dropped.")); OUTPUT_ERROR(); ReleaseScanner(); return NS_OK; } if (! ParseProperty(errorCode, aDeclaration, propID, hint)) { REPORT_UNEXPECTED( NS_LITERAL_STRING("Error in parsing value for property '") + aPropName + NS_LITERAL_STRING("'. Declaration dropped.")); OUTPUT_ERROR(); if (errorCode != -1) { // -1 means EOF which we ignore ReleaseScanner(); return errorCode; } } CLEAR_ERROR(); if (aHint && hint > *aHint) { *aHint = hint; } ReleaseScanner(); 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, 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(PRInt32& 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(PRInt32& 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(PRInt32& aErrorCode) { for (;;) { if (!GetToken(aErrorCode, PR_TRUE)) { REPORT_UNEXPECTED_EOF(); 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(PRInt32& aErrorCode, RuleAppendFunc aAppendFunc, void* aData) { if ((mSection <= eCSSSection_Charset) && (mToken.mIdent.EqualsIgnoreCase("charset"))) { if (ParseCharsetRule(aErrorCode, aAppendFunc, aData)) { mSection = eCSSSection_Import; // only one charset allowed return PR_TRUE; } } if ((mSection <= eCSSSection_Import) && mToken.mIdent.EqualsIgnoreCase("import")) { if (ParseImportRule(aErrorCode, aAppendFunc, aData)) { mSection = eCSSSection_Import; return PR_TRUE; } } if ((mSection <= eCSSSection_NameSpace) && mToken.mIdent.EqualsIgnoreCase("namespace")) { if (ParseNameSpaceRule(aErrorCode, aAppendFunc, aData)) { mSection = eCSSSection_NameSpace; return PR_TRUE; } } if (mToken.mIdent.EqualsIgnoreCase("media")) { if (ParseMediaRule(aErrorCode, aAppendFunc, aData)) { mSection = eCSSSection_General; return PR_TRUE; } } if (mToken.mIdent.EqualsIgnoreCase("font-face")) { if (ParseFontFaceRule(aErrorCode, aAppendFunc, aData)) { mSection = eCSSSection_General; return PR_TRUE; } } if (mToken.mIdent.EqualsIgnoreCase("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(PRInt32& aErrorCode, RuleAppendFunc aAppendFunc, void* aData) { // XXX not yet implemented return PR_FALSE; } PRBool CSSParserImpl::GatherMedia(PRInt32& aErrorCode, nsString& aMedia, nsISupportsArray* aMediaAtoms) { PRBool first = PR_TRUE; PRBool expectIdent = PR_TRUE; for (;;) { if (!GetToken(aErrorCode, PR_TRUE)) { REPORT_UNEXPECTED_EOF(); 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) { if (! first) { aMedia.Append(PRUnichar(',')); } ToLowerCase(mToken.mIdent); // case insensitive from CSS - must be lower cased if (aMediaAtoms) { nsIAtom* medium = NS_NewAtom(mToken.mIdent); aMediaAtoms->AppendElement(medium); NS_RELEASE(medium); } aMedia.Append(mToken.mIdent); first = PR_FALSE; 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; } } aMedia.Truncate(); if (aMediaAtoms) { aMediaAtoms->Clear(); } return PR_FALSE; } // Parse a CSS2 import rule: "@import STRING | URL [medium [, mdeium]]" PRBool CSSParserImpl::ParseImportRule(PRInt32& aErrorCode, RuleAppendFunc aAppendFunc, void* aData) { if (!GetToken(aErrorCode, PR_TRUE)) { REPORT_UNEXPECTED_EOF(); return PR_FALSE; } nsAutoString url; nsAutoString media; if (eCSSToken_String == mToken.mType) { url = mToken.mIdent; if (GatherMedia(aErrorCode, media, nsnull)) { if (ExpectSymbol(aErrorCode, ';', PR_TRUE)) { ProcessImport(aErrorCode, url, media, aAppendFunc, aData); return PR_TRUE; } } } else if ((eCSSToken_Function == mToken.mType) && (mToken.mIdent.EqualsIgnoreCase("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, nsnull)) { 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(PRInt32& aErrorCode, const nsString& aURLSpec, const nsString& aMedia, RuleAppendFunc aAppendFunc, void* aData) { nsCOMPtr rule; aErrorCode = NS_NewCSSImportRule(getter_AddRefs(rule), aURLSpec, aMedia); if (NS_FAILED(aErrorCode)) { return PR_FALSE; } (*aAppendFunc)(rule, aData); if (mChildLoader) { // XXX probably need a way to encode unicode junk for the part of // the url that follows a "?" nsCOMPtr url; // XXX need to have nsILoadGroup passed in here aErrorCode = NS_NewURI(getter_AddRefs(url), aURLSpec, mURL/*, group*/); if (NS_FAILED(aErrorCode)) { // import url is bad // XXX log this somewhere for easier web page debugging return PR_FALSE; } PRBool bContains = PR_FALSE; if (NS_SUCCEEDED(mSheet->ContainsStyleSheet(url,bContains)) && bContains != PR_TRUE ) { // don't allow circular references mChildLoader->LoadChildSheet(mSheet, url, aMedia, kNameSpaceID_Unknown, mChildSheetCount++, rule); } } return PR_TRUE; } // Parse a CSS2 media rule: "@media medium [, medium] { ... }" PRBool CSSParserImpl::ParseMediaRule(PRInt32& aErrorCode, RuleAppendFunc aAppendFunc, void* aData) { nsAutoString mediaStr; nsCOMPtr media; NS_NewISupportsArray(getter_AddRefs(media)); if (media) { if (GatherMedia(aErrorCode, mediaStr, media)) { if ((0 < mediaStr.Length()) && ExpectSymbol(aErrorCode, '{', PR_TRUE)) { // push media rule on stack, loop over children nsCOMPtr 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(); 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(PRInt32& aErrorCode, RuleAppendFunc aAppendFunc, void* aData) { if (!GetToken(aErrorCode, PR_TRUE)) { REPORT_UNEXPECTED_EOF(); 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(); 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.EqualsIgnoreCase("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(PRInt32& aErrorCode, const nsString& aPrefix, const nsString& aURLSpec, RuleAppendFunc aAppendFunc, void* aData) { PRBool result = PR_FALSE; nsCOMPtr rule; nsCOMPtr prefix; if (0 < aPrefix.Length()) { prefix = dont_AddRef(NS_NewAtom(aPrefix)); } NS_NewCSSNameSpaceRule(getter_AddRefs(rule), prefix, aURLSpec); if (rule) { (*aAppendFunc)(rule, aData); NS_IF_RELEASE(mNameSpace); mSheet->GetNameSpace(mNameSpace); } return result; } PRBool CSSParserImpl::ParseFontFaceRule(PRInt32& aErrorCode, RuleAppendFunc aAppendFunc, void* aData) { // XXX not yet implemented return PR_FALSE; } PRBool CSSParserImpl::ParsePageRule(PRInt32& aErrorCode, RuleAppendFunc aAppendFunc, void* aData) { // XXX not yet implemented return PR_FALSE; } 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)) { if (aCheckForBraces) { REPORT_UNEXPECTED_EOF(); } 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)) { REPORT_UNEXPECTED_EOF(); 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) { NS_NewISupportsArray(&mGroupStack); } if (mGroupStack) { mGroupStack->AppendElement(aRule); return PR_TRUE; } return PR_FALSE; } void CSSParserImpl::PopGroup(void) { if (mGroupStack) { PRUint32 count; mGroupStack->Count(&count); if (0 < count) { mGroupStack->RemoveElementAt(count - 1); } } } void CSSParserImpl::AppendRule(nsICSSRule* aRule) { PRUint32 count = 0; if (mGroupStack) { mGroupStack->Count(&count); } if (0 < count) { nsICSSGroupRule* group = (nsICSSGroupRule*)mGroupStack->ElementAt(count - 1); group->AppendStyleRule(aRule); NS_RELEASE(group); } else { mSheet->AppendStyleRule(aRule); } } PRBool CSSParserImpl::ParseRuleSet(PRInt32& aErrorCode, RuleAppendFunc aAppendFunc, void* aData) { // First get the list of selectors for the rule SelectorList* 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 SelectorList* list = slist; while (nsnull != list) { nsICSSStyleRule* rule = nsnull; NS_NewCSSStyleRule(&rule, *(list->mSelectors)); if (nsnull != rule) { if (nsnull != list->mSelectors->mNext) { // hand off other selectors to new rule nsCSSSelector* ruleFirst = rule->FirstSelector(); ruleFirst->mNext = list->mSelectors->mNext; list->mSelectors->mNext = nsnull; } rule->SetLineNumber(linenum); rule->SetDeclaration(declaration); rule->SetWeight(list->mWeight); // rule->List(); (*aAppendFunc)(rule, aData); NS_RELEASE(rule); } list = list->mNext; } // Release temporary storage delete slist; return PR_TRUE; } PRBool CSSParserImpl::ParseSelectorList(PRInt32& aErrorCode, SelectorList*& aListHead) { SelectorList* 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(); break; } if (eCSSToken_Symbol == tk->mType) { if (',' == tk->mSymbol) { SelectorList* 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 IsPseudoClass(const nsIAtom* aAtom) { return PRBool((nsCSSAtoms::activePseudo == aAtom) || (nsCSSAtoms::anyLinkPseudo == aAtom) || (nsCSSAtoms::checkedPseudo == aAtom) || (nsCSSAtoms::disabledPseudo == aAtom) || (nsCSSAtoms::dragOverPseudo == aAtom) || (nsCSSAtoms::dragPseudo == aAtom) || (nsCSSAtoms::enabledPseudo == aAtom) || (nsCSSAtoms::emptyPseudo == aAtom) || (nsCSSAtoms::firstChildPseudo == aAtom) || (nsCSSAtoms::firstNodePseudo == aAtom) || (nsCSSAtoms::focusPseudo == aAtom) || (nsCSSAtoms::hoverPseudo == aAtom) || (nsCSSAtoms::langPseudo == aAtom) || (nsCSSAtoms::lastChildPseudo == aAtom) || (nsCSSAtoms::lastNodePseudo == aAtom) || (nsCSSAtoms::linkPseudo == aAtom) || (nsCSSAtoms::rootPseudo == aAtom) || (nsCSSAtoms::xblBoundElementPseudo == aAtom) || (nsCSSAtoms::visitedPseudo == aAtom)); } 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 INCLUDE_XUL static PRBool IsOutlinerPseudoElement(const nsString& aPseudo) { return Substring(aPseudo, 0, 14).Equals(NS_LITERAL_STRING("-moz-outliner-")); } static PRBool IsOutlinerPseudoElement(nsIAtom* aPseudo) { nsAutoString str; aPseudo->ToString(str); return Substring(str, 0, 15).Equals(NS_LITERAL_STRING(":-moz-outliner-")); } #endif PRBool CSSParserImpl::ParseSelectorGroup(PRInt32& aErrorCode, SelectorList*& aList) { SelectorList* list = nsnull; PRUnichar combinator = PRUnichar(0); PRInt32 weight = 0; PRBool havePseudoElement = PR_FALSE; for (;;) { nsCSSSelector selector; if (! ParseSelector(aErrorCode, selector)) { break; } if (nsnull == list) { list = new SelectorList(); if (nsnull == list) { aErrorCode = NS_ERROR_OUT_OF_MEMORY; return PR_FALSE; } } list->AddSelector(selector); nsCSSSelector* listSel = list->mSelectors; // pull out pseudo elements here nsAtomList* prevList = nsnull; nsAtomList* pseudoClassList = listSel->mPseudoClassList; while (nsnull != pseudoClassList) { if (! 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 INCLUDE_XUL if (IsOutlinerPseudoElement(selector.mTag)) { // Take the remaining "pseudoclasses" that we parsed // inside the outliner 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_TRUE)) { if ((eCSSToken_Symbol == mToken.mType) && (('+' == mToken.mSymbol) || ('>' == mToken.mSymbol))) { 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; 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, PRInt32& aErrorCode) { if (0 < mToken.mIdent.Length()) { // verify is legal ID 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, PRInt32& aErrorCode) { if (! GetToken(aErrorCode, PR_FALSE)) { // get ident REPORT_UNEXPECTED_EOF(); 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, PRInt32& 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(); 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 nsINameSpace* defaultNameSpace = nsnull; mNameSpace->FindNameSpace(nsnull, defaultNameSpace); if (defaultNameSpace) { PRInt32 defaultID; defaultNameSpace->GetNameSpaceID(defaultID); aSelector.SetNameSpace(defaultID); NS_RELEASE(defaultNameSpace); } } 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) { nsIAtom* prefix; ToLowerCase(buffer); // always case insensitive, since stays within CSS prefix = NS_NewAtom(buffer); mNameSpace->FindNameSpaceID(prefix, nameSpaceID); NS_IF_RELEASE(prefix); } // else, no delcared namespaces if (kNameSpaceID_Unknown == nameSpaceID) { // unknown prefix, dump it REPORT_UNEXPECTED_TOKEN(NS_LITERAL_STRING("Unknown namespace prefix")); aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR; return; } aSelector.SetNameSpace(nameSpaceID); if (! GetToken(aErrorCode, PR_FALSE)) { REPORT_UNEXPECTED_EOF(); 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 nsINameSpace* defaultNameSpace = nsnull; mNameSpace->FindNameSpace(nsnull, defaultNameSpace); if (defaultNameSpace) { PRInt32 defaultID; defaultNameSpace->GetNameSpaceID(defaultID); aSelector.SetNameSpace(defaultID); NS_RELEASE(defaultNameSpace); } } 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(); 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 nsINameSpace* defaultNameSpace = nsnull; mNameSpace->FindNameSpace(nsnull, defaultNameSpace); if (defaultNameSpace) { PRInt32 defaultID; defaultNameSpace->GetNameSpaceID(defaultID); aSelector.SetNameSpace(defaultID); NS_RELEASE(defaultNameSpace); } } } 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, PRInt32& aErrorCode) { if (! GetToken(aErrorCode, PR_TRUE)) { // premature EOF REPORT_UNEXPECTED_EOF(); 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(); 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(); 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) { nsIAtom* prefix; ToLowerCase(attr); // always case insensitive, since stays within CSS prefix = NS_NewAtom(attr); mNameSpace->FindNameSpaceID(prefix, nameSpaceID); NS_IF_RELEASE(prefix); } // else, no delcared namespaces if (kNameSpaceID_Unknown == nameSpaceID) { // unknown prefix, dump it REPORT_UNEXPECTED_TOKEN( NS_LITERAL_STRING("Unknown namespace prefix")); aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR; return; } if (! GetToken(aErrorCode, PR_FALSE)) { // premature EOF REPORT_UNEXPECTED_EOF(); 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(); 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(); 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(); aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR; return; } if (mToken.IsSymbol(']')) { PRBool isCaseSensitive = mCaseSensitive; if (nameSpaceID == kNameSpaceID_None || nameSpaceID == kNameSpaceID_HTML) { static const char* caseSensitiveHTMLAttribute[] = { // list based on http://www.w3.org/TR/REC-html40/index/attributes.html "abbr", "alt", "label", "prompt", "standby", "summary", "title", 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, PRInt32& aErrorCode, PRBool aIsNegated) { nsAutoString buffer; if (! GetToken(aErrorCode, PR_FALSE)) { // premature eof REPORT_UNEXPECTED_EOF(); aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR; return; } buffer.Truncate(); buffer.Append(PRUnichar(':')); buffer.Append(mToken.mIdent); ToLowerCase(buffer); nsIAtom* pseudo = NS_NewAtom(buffer); if (eCSSToken_Ident != mToken.mType) { // malformed selector if (eCSSToken_Function != mToken.mType || !( #ifdef INCLUDE_XUL // -moz-outliner is a pseudo-element and therefore cannot be negated (!aIsNegated && IsOutlinerPseudoElement(mToken.mIdent)) || #endif // the negation pseudo-class is a function (nsCSSAtoms::notPseudo == pseudo))) { REPORT_UNEXPECTED_TOKEN(NS_LITERAL_STRING("Expected identifier for pseudo-class selector not found")); NS_RELEASE(pseudo); UngetToken(); aParsingStatus = SELECTOR_PARSING_STOPPED_ERROR; return; #ifdef INCLUDE_XUL } #endif } if (nsCSSAtoms::notPseudo == pseudo) { NS_RELEASE(pseudo); if (aIsNegated) { // :not() can't be itself negated REPORT_UNEXPECTED_TOKEN(NS_LITERAL_STRING("Negation pseudo-class can't be negated")); 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 (IsPseudoClass(pseudo)) { // XXX parse pseudo classes accepting arguments aDataMask |= SEL_MASK_PCLASS; aSelector.AddPseudoClass(pseudo); NS_RELEASE(pseudo); } else { if (aIsNegated) { // pseudo-elements can't be negated REPORT_UNEXPECTED_TOKEN(NS_LITERAL_STRING("Pseudo-elements can't be negated")); 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 NS_RELEASE(pseudo); #ifdef INCLUDE_XUL if (eCSSToken_Function == mToken.mType && IsOutlinerPseudoElement(mToken.mIdent)) { // We have encountered a pseudoelement of the form // -moz-outliner-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 pseudoelement. if (!ParseOutlinerPseudoElement(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(); NS_RELEASE(pseudo); 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, PRInt32& aErrorCode) { // Check if we have the first parenthesis if (ExpectSymbol(aErrorCode, '(', PR_FALSE)) { if (! GetToken(aErrorCode, PR_FALSE)) { // premature eof REPORT_UNEXPECTED_EOF(); 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; } } /** * This is the format for selectors: * operator? [[namespace |]? element_name]? [ ID | class | attrib | pseudo ]* */ PRBool CSSParserImpl::ParseSelector(PRInt32& aErrorCode, nsCSSSelector& aSelector) { PRInt32 dataMask = 0; PRInt32 parsingStatus = SELECTOR_PARSING_ENDED_OK; if (! GetToken(aErrorCode, PR_TRUE)) { REPORT_UNEXPECTED_EOF(); 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(PRInt32& 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 = nsnull; if (NS_OK == NS_NewCSSDeclaration(&declaration)) { PRInt32 count = 0; PRBool dropDeclaration = PR_FALSE; for (;;) { PRInt32 hint = NS_STYLE_HINT_NONE; if (ParseDeclaration(aErrorCode, declaration, aCheckForBraces, hint)) { count++; // count declarations } else { dropDeclaration = (aErrorCode == NS_CSS_PARSER_DROP_DECLARATION); 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 (dropDeclaration || (0 == count)) { // didn't get any XXX is this ok with the DOM? if (nsnull != declaration) { declaration->RuleAbort(); declaration = nsnull; } } } return declaration; } PRBool CSSParserImpl::ParseColor(PRInt32& aErrorCode, nsCSSValue& aValue) { if (!GetToken(aErrorCode, PR_TRUE)) { REPORT_UNEXPECTED_EOF(); 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.EqualsIgnoreCase("rgb")) { // rgb ( component , component , component ) PRUint8 r, g, b; if (ExpectSymbol(aErrorCode, '(', PR_FALSE) && // this won't fail ParseColorComponent(aErrorCode, r, ',') && ParseColorComponent(aErrorCode, g, ',') && ParseColorComponent(aErrorCode, b, ')')) { rgba = NS_RGB(r,g,b); aValue.SetColorValue(rgba); return PR_TRUE; } return PR_FALSE; // already pushed back } 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[10]; switch (tk->mType) { case eCSSToken_Ident: str.Assign(tk->mIdent); break; case eCSSToken_Number: if (tk->mIntegerValid) { sprintf(buffer, "%06d", tk->mInteger); str.AssignWithConversion(buffer); } break; case eCSSToken_Dimension: if (tk->mIdent.Length() <= 6) { sprintf(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; } PRBool CSSParserImpl::ParseColorComponent(PRInt32& aErrorCode, PRUint8& aComponent, char aStop) { if (!GetToken(aErrorCode, PR_TRUE)) { REPORT_UNEXPECTED_EOF(); 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: 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; } #ifdef INCLUDE_XUL PRBool CSSParserImpl::ParseOutlinerPseudoElement(PRInt32& 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 pseudo = getter_AddRefs(NS_NewAtom(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(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRBool aCheckForBraces, PRInt32& aChangeHint) { // Get property name nsCSSToken* tk = &mToken; nsAutoString propertyName; for (;;) { if (!GetToken(aErrorCode, PR_TRUE)) { if (aCheckForBraces) { REPORT_UNEXPECTED_EOF(); } 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, aDeclaration, propID, aChangeHint)) { // 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(); 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(); 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 REPORT_UNEXPECTED_EOF(); return PR_FALSE; } if ((eCSSToken_Ident != tk->mType) || !tk->mIdent.EqualsIgnoreCase("important")) { REPORT_UNEXPECTED_TOKEN( NS_LITERAL_STRING("Expected 'important' but found")); OUTPUT_ERROR(); 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 REPORT_UNEXPECTED_EOF(); 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. REPORT_UNEXPECTED_TOKEN( NS_LITERAL_STRING("Expected ';' to terminate declaration but found")); REPORT_UNEXPECTED(NS_LITERAL_STRING("Declaration dropped.")); OUTPUT_ERROR(); return PR_FALSE; } if ('}' == tk->mSymbol) { UngetToken(); 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(); 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 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(PRInt32& 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(PRInt32& aErrorCode, nsCSSValue& aValue, PRInt32 aVariantMask, float aNumber, const nsString& aUnit) { nsCSSUnit units; PRInt32 type = 0; if (0 != aUnit.Length()) { 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 aErrorCode = NS_ERROR_ILLEGAL_VALUE; 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); return PR_TRUE; } return PR_FALSE; } PRBool CSSParserImpl::ParsePositiveVariant(PRInt32& 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(PRInt32& 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()) { return TranslateDimension(aErrorCode, aValue, aVariantMask, tk->mNumber, tk->mIdent); } 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.EqualsIgnoreCase("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.EqualsIgnoreCase("rgb")))) { // 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.EqualsIgnoreCase("counter") || tk->mIdent.EqualsIgnoreCase("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.EqualsIgnoreCase("attr")) { if (ParseAttr(aErrorCode, aValue)) { 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(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(PRInt32& 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) { nsIAtom* prefix; ToLowerCase(holdIdent); // always case insensitive, since stays within CSS prefix = NS_NewAtom(holdIdent); mNameSpace->FindNameSpaceID(prefix, nameSpaceID); NS_IF_RELEASE(prefix); } // else, no delcared namespaces if (kNameSpaceID_Unknown == nameSpaceID) { // unknown prefix, dump it return PR_FALSE; } attr.AppendInt(nameSpaceID, 10); attr.Append(PRUnichar('|')); if (! GetToken(aErrorCode, PR_FALSE)) { 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 { UngetToken(); return PR_FALSE; } } else { // no namespace if (mCaseSensitive) { attr = holdIdent; } else { ToLowerCase(holdIdent, attr); } } } else if (mToken.IsSymbol('*')) { // namespace wildcard if (ExpectSymbol(aErrorCode, '|', PR_FALSE)) { attr.AppendInt(kNameSpaceID_Unknown, 10); attr.Append(PRUnichar('|')); if (! GetToken(aErrorCode, PR_FALSE)) { return PR_FALSE; } if (eCSSToken_Ident == mToken.mType) { attr.Append(mToken.mIdent); } else { UngetToken(); return PR_FALSE; } } else { return PR_FALSE; } } else if (mToken.IsSymbol('|')) { // explicit NO namespace if (! GetToken(aErrorCode, PR_FALSE)) { 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 { UngetToken(); return PR_FALSE; } } else { UngetToken(); return PR_FALSE; } if (ExpectSymbol(aErrorCode, ')', PR_TRUE)) { aValue.SetStringValue(attr, eCSSUnit_Attr); return PR_TRUE; } } } return PR_FALSE; } inline static PRBool css_RequiresAbsoluteURI(const nsString& uri) { // cheap shot at figuring out if this requires an absolute url translation return Substring(uri, 0, 9).Equals(NS_LITERAL_STRING("chrome:")) == 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; if (nsnull != mURL && css_RequiresAbsoluteURI(tk->mIdent)) { nsresult rv; rv = NS_MakeAbsoluteURI(absURL, tk->mIdent, mURL); if (NS_FAILED(rv)) { absURL = tk->mIdent; } } else { absURL = tk->mIdent; } if (ExpectSymbol(aErrorCode, ')', PR_TRUE)) { aValue.SetStringValue(absURL, eCSSUnit_URL); return PR_TRUE; } } } return PR_FALSE; } PRInt32 CSSParserImpl::ParseChoice(PRInt32& 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 (aErrorCode == NS_ERROR_ILLEGAL_VALUE) { // bug 47138 aErrorCode = NS_OK; found = 0; goto done; } } } 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; } } } } done: SetParsingCompoundProperty(PR_FALSE); return found; } nsresult CSSParserImpl::AppendValue(nsCSSDeclaration* aDeclaration, nsCSSProperty aPropID, const nsCSSValue& aValue, PRInt32& aChangeHint) { nsresult result; nsCSSValue oldValue; result = aDeclaration->GetValue(aPropID, oldValue); if (aValue != oldValue) { result = aDeclaration->AppendValue(aPropID, aValue); if (aChangeHint < nsCSSProps::kHintTable[aPropID]) { aChangeHint = nsCSSProps::kHintTable[aPropID]; } } return result; } /** * 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(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, const nsCSSProperty aPropIDs[], PRInt32& aChangeHint) { // Get up to four values for the property nsCSSValue values[4]; PRInt32 count = 0; PRInt32 index; for (index = 0; index < 4; index++) { if (! ParseSingleValueProperty(aErrorCode, values[index], aPropIDs[index])) { if (aErrorCode == NS_ERROR_ILLEGAL_VALUE) { // bug 47138 aErrorCode = NS_OK; count = 0; } 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++) { if (eCSSUnit_Inherit == values[index].GetUnit() || eCSSUnit_Initial == values[index].GetUnit()) { return PR_FALSE; } } } // Provide missing values by replicating some of the values found switch (count) { case 1: // Make right == top values[1] = values[0]; case 2: // Make bottom == top values[2] = values[0]; case 3: // Make left == right values[3] = values[1]; } for (index = 0; index < 4; index++) { AppendValue(aDeclaration, aPropIDs[index], values[index], aChangeHint); } return PR_TRUE; } PRBool CSSParserImpl::ParseProperty(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, nsCSSProperty aPropID, PRInt32& aChangeHint) { switch (aPropID) { // handle shorthand or multiple properties case eCSSProperty_appearance: return ParseAppearance(aErrorCode, aDeclaration, aChangeHint); case eCSSProperty_background: return ParseBackground(aErrorCode, aDeclaration, aChangeHint); case eCSSProperty_background_position: return ParseBackgroundPosition(aErrorCode, aDeclaration, aChangeHint); case eCSSProperty_border: return ParseBorder(aErrorCode, aDeclaration, aChangeHint); case eCSSProperty_border_color: return ParseBorderColor(aErrorCode, aDeclaration, aChangeHint); case eCSSProperty_border_spacing: return ParseBorderSpacing(aErrorCode, aDeclaration, aChangeHint); case eCSSProperty_border_style: return ParseBorderStyle(aErrorCode, aDeclaration, aChangeHint); case eCSSProperty_border_bottom: return ParseBorderSide(aErrorCode, aDeclaration, kBorderBottomIDs, aChangeHint); case eCSSProperty_border_left: return ParseBorderSide(aErrorCode, aDeclaration, kBorderLeftIDs, aChangeHint); case eCSSProperty_border_right: return ParseBorderSide(aErrorCode, aDeclaration, kBorderRightIDs, aChangeHint); case eCSSProperty_border_top: return ParseBorderSide(aErrorCode, aDeclaration, kBorderTopIDs, aChangeHint); case eCSSProperty_border_bottom_colors: case eCSSProperty_border_left_colors: case eCSSProperty_border_right_colors: case eCSSProperty_border_top_colors: return ParseBorderColors(aErrorCode, aDeclaration, aChangeHint, aPropID); case eCSSProperty_border_width: return ParseBorderWidth(aErrorCode, aDeclaration, aChangeHint); case eCSSProperty__moz_border_radius: return ParseBorderRadius(aErrorCode, aDeclaration, aChangeHint); #ifdef ENABLE_OUTLINE case eCSSProperty__moz_outline_radius: return ParseOutlineRadius(aErrorCode, aDeclaration, aChangeHint); #endif case eCSSProperty_clip: return ParseClip(aErrorCode, aDeclaration, aChangeHint); case eCSSProperty_content: return ParseContent(aErrorCode, aDeclaration, aChangeHint); case eCSSProperty_counter_increment: case eCSSProperty_counter_reset: return ParseCounterData(aErrorCode, aDeclaration, aPropID, aChangeHint); case eCSSProperty_cue: return ParseCue(aErrorCode, aDeclaration, aChangeHint); case eCSSProperty_cursor: return ParseCursor(aErrorCode, aDeclaration, aChangeHint); case eCSSProperty_font: return ParseFont(aErrorCode, aDeclaration, aChangeHint); case eCSSProperty_image_region: return ParseImageRegion(aErrorCode, aDeclaration, aChangeHint); case eCSSProperty_list_style: return ParseListStyle(aErrorCode, aDeclaration, aChangeHint); case eCSSProperty_margin: return ParseMargin(aErrorCode, aDeclaration, aChangeHint); #ifdef ENABLE_OUTLINE case eCSSProperty_outline: return ParseOutline(aErrorCode, aDeclaration, aChangeHint); #endif case eCSSProperty_padding: return ParsePadding(aErrorCode, aDeclaration, aChangeHint); case eCSSProperty_pause: return ParsePause(aErrorCode, aDeclaration, aChangeHint); case eCSSProperty_play_during: return ParsePlayDuring(aErrorCode, aDeclaration, aChangeHint); case eCSSProperty_quotes: return ParseQuotes(aErrorCode, aDeclaration, aChangeHint); case eCSSProperty_size: return ParseSize(aErrorCode, aDeclaration, aChangeHint); case eCSSProperty_text_shadow: return ParseTextShadow(aErrorCode, aDeclaration, aChangeHint); // 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_clip_bottom: case eCSSProperty_clip_left: case eCSSProperty_clip_right: case eCSSProperty_clip_top: case eCSSProperty_image_region_bottom: case eCSSProperty_image_region_left: case eCSSProperty_image_region_right: case eCSSProperty_image_region_top: case eCSSProperty_play_during_flags: case eCSSProperty_quotes_close: case eCSSProperty_quotes_open: case eCSSProperty_size_height: case eCSSProperty_size_width: case eCSSProperty_text_shadow_color: case eCSSProperty_text_shadow_radius: case eCSSProperty_text_shadow_x: case eCSSProperty_text_shadow_y: // 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)) { aErrorCode = AppendValue(aDeclaration, aPropID, value, aChangeHint); 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_CENTER1 0x20 #define BG_CENTER2 0x40 // 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(PRInt32& 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_clip: case eCSSProperty_content: case eCSSProperty_counter_increment: case eCSSProperty_counter_reset: case eCSSProperty_cue: case eCSSProperty_cursor: case eCSSProperty_font: case eCSSProperty_image_region: case eCSSProperty_list_style: case eCSSProperty_margin: #ifdef ENABLE_OUTLINE case eCSSProperty_outline: #endif case eCSSProperty_padding: 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_clip_bottom: case eCSSProperty_clip_left: case eCSSProperty_clip_right: case eCSSProperty_clip_top: case eCSSProperty_image_region_bottom: case eCSSProperty_image_region_left: case eCSSProperty_image_region_right: case eCSSProperty_image_region_top: case eCSSProperty_play_during_flags: case eCSSProperty_quotes_close: case eCSSProperty_quotes_open: case eCSSProperty_size_height: case eCSSProperty_size_width: case eCSSProperty_text_shadow_color: case eCSSProperty_text_shadow_radius: case eCSSProperty_text_shadow_x: case eCSSProperty_text_shadow_y: NS_ERROR("not currently parsed here"); return PR_FALSE; case eCSSProperty_azimuth: return ParseAzimuth(aErrorCode, aValue); case eCSSProperty_background_attachment: return ParseVariant(aErrorCode, aValue, VARIANT_HK, nsCSSProps::kBackgroundAttachmentKTable); 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_background_repeat: return ParseVariant(aErrorCode, aValue, VARIANT_HK, nsCSSProps::kBackgroundRepeatKTable); case eCSSProperty_background_x_position: case eCSSProperty_background_y_position: return ParseVariant(aErrorCode, aValue, VARIANT_HKLP, kBackgroundXYPositionKTable); case eCSSProperty_appearance: return ParseVariant(aErrorCode, aValue, VARIANT_HOK, nsCSSProps::kAppearanceKTable); 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 ParseVariant(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); #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); #ifdef INCLUDE_XUL 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); #endif #ifdef MOZ_SVG 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_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); #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_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 //aErrorCode = NS_CSS_PARSER_DROP_DECLARATION; // bug 15432 (commented out for bug 46562 and 38397) 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_left: case eCSSProperty_margin_right: 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 ParseVariant(aErrorCode, aValue, VARIANT_HLPO, nsnull); case eCSSProperty_min_height: case eCSSProperty_min_width: return ParseVariant(aErrorCode, aValue, VARIANT_HLP, nsnull); case eCSSProperty_opacity: return ParseVariant(aErrorCode, aValue, VARIANT_HPN, nsnull); case eCSSProperty_orphans: case eCSSProperty_widows: return ParseVariant(aErrorCode, aValue, VARIANT_HI, nsnull); #ifdef ENABLE_OUTLINE case eCSSProperty_outline_color: return ParseVariant(aErrorCode, aValue, VARIANT_HCK, nsCSSProps::kOutlineColorKTable); case eCSSProperty_outline_style: return ParseVariant(aErrorCode, aValue, VARIANT_HOK, nsCSSProps::kBorderStyleKTable); case eCSSProperty_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_left: case eCSSProperty_padding_right: 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_resizer: return ParseVariant(aErrorCode, aValue, VARIANT_AHK | VARIANT_NONE, nsCSSProps::kResizerKTable); 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: 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(PRInt32& 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; } PRBool CSSParserImpl::ParseAppearance(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint) { nsCSSValue appearance; if (!ParseVariant(aErrorCode, appearance, VARIANT_HK, nsCSSProps::kAppearanceKTable)) return PR_FALSE; if (ExpectEndProperty(aErrorCode, PR_TRUE)) aErrorCode = AppendValue(aDeclaration, eCSSProperty_appearance, appearance, aChangeHint); else return PR_FALSE; return PR_TRUE; } PRBool CSSParserImpl::ParseBackground(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint) { 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)) { // x value only if (eCSSUnit_Enumerated == values[4].GetUnit()) { switch (values[4].GetIntValue()) { case BG_CENTER: values[4].SetIntValue(50, eCSSUnit_Enumerated); values[5].SetIntValue(50, eCSSUnit_Enumerated); break; case BG_TOP: values[4].SetIntValue(50, eCSSUnit_Enumerated); values[5].SetIntValue(0, eCSSUnit_Enumerated); break; case BG_BOTTOM: values[4].SetIntValue(50, eCSSUnit_Enumerated); values[5].SetIntValue(100, eCSSUnit_Enumerated); break; case BG_LEFT: values[4].SetIntValue(0, eCSSUnit_Enumerated); values[5].SetIntValue(50, eCSSUnit_Enumerated); break; case BG_RIGHT: values[4].SetIntValue(100, eCSSUnit_Enumerated); values[5].SetIntValue(50, eCSSUnit_Enumerated); break; } } else if (eCSSUnit_Inherit == values[4].GetUnit()) { values[5].SetInheritValue(); } else if (eCSSUnit_Initial == values[4].GetUnit()) { values[5].SetInitialValue(); } 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) { // if one is enumerated, both must be if (eCSSUnit_Enumerated == yUnit) { PRInt32 xValue = values[4].GetIntValue(); PRInt32 yValue = values[5].GetIntValue(); if (0 != (xValue & (BG_LEFT | BG_CENTER | BG_RIGHT))) { // x is really an x value if (0 != (yValue & (BG_LEFT | BG_RIGHT))) { // y is also an x value return PR_FALSE; } } else { // x is a y value if (0 != (yValue & (BG_TOP | BG_BOTTOM))) { // y is also a y value return PR_FALSE; } PRInt32 holdXValue = xValue; xValue = yValue; yValue = holdXValue; } switch (xValue) { case BG_LEFT: values[4].SetIntValue(0, eCSSUnit_Enumerated); break; case BG_CENTER: values[4].SetIntValue(50, eCSSUnit_Enumerated); break; case BG_RIGHT: values[4].SetIntValue(100, eCSSUnit_Enumerated); break; default: NS_ERROR("bad x value"); } switch (yValue) { case BG_TOP: values[5].SetIntValue(0, eCSSUnit_Enumerated); break; case BG_CENTER: values[5].SetIntValue(50, eCSSUnit_Enumerated); break; case BG_BOTTOM: values[5].SetIntValue(100, eCSSUnit_Enumerated); break; default: NS_ERROR("bad y value"); } } else { return PR_FALSE; } } else { if (eCSSUnit_Enumerated == yUnit) { return 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(aDeclaration, kBackgroundIDs[index], values[index], aChangeHint); } return PR_TRUE; } PRBool CSSParserImpl::ParseBackgroundPosition(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint) { // First try a number or a length value nsCSSValue xValue; 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(aDeclaration, eCSSProperty_background_x_position, xValue, aChangeHint); AppendValue(aDeclaration, eCSSProperty_background_y_position, xValue, aChangeHint); return PR_TRUE; } return PR_FALSE; } // We have one number/length. Get the optional second number/length. nsCSSValue yValue; if (ParseVariant(aErrorCode, yValue, VARIANT_LP, nsnull)) { // We have two numbers if (ExpectEndProperty(aErrorCode, PR_TRUE)) { AppendValue(aDeclaration, eCSSProperty_background_x_position, xValue, aChangeHint); AppendValue(aDeclaration, eCSSProperty_background_y_position, yValue, aChangeHint); return PR_TRUE; } return PR_FALSE; } // We have one number which is the x position. Create an value for // the vertical position which is of value 50% if (ExpectEndProperty(aErrorCode, PR_TRUE)) { AppendValue(aDeclaration, eCSSProperty_background_x_position, xValue, aChangeHint); AppendValue(aDeclaration, eCSSProperty_background_y_position, nsCSSValue(0.5f, eCSSUnit_Percent), aChangeHint); 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; PRInt32 centerBit = BG_CENTER1; for (PRInt32 i = 0; i < 2; i++) { if (PR_FALSE == ParseEnum(aErrorCode, xValue, kBackgroundXYPositionKTable)) { break; } PRInt32 bit = xValue.GetIntValue(); if (BG_CENTER == 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; } // 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 PRInt32 xEnumValue = 50; if ((mask & (BG_LEFT | BG_RIGHT)) != 0) { // We have an x value xEnumValue = ((mask & BG_LEFT) != 0) ? 0 : 100; } PRInt32 yEnumValue = 50; if ((mask & (BG_TOP | BG_BOTTOM)) != 0) { // We have a y value yEnumValue = ((mask & BG_TOP) != 0) ? 0 : 100; } if (ExpectEndProperty(aErrorCode, PR_TRUE)) { // Create style values AppendValue(aDeclaration, eCSSProperty_background_x_position, nsCSSValue(xEnumValue, eCSSUnit_Enumerated), aChangeHint); AppendValue(aDeclaration, eCSSProperty_background_y_position, nsCSSValue(yEnumValue, eCSSUnit_Enumerated), aChangeHint); 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::ParseBorder(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint) { const PRInt32 numProps = 3; static const nsCSSProperty kBorderIDs[] = { eCSSProperty_border_top_width, // only one value per property eCSSProperty_border_top_style, eCSSProperty_border_top_color }; nsCSSValue values[numProps]; PRInt32 found = ParseChoice(aErrorCode, values, kBorderIDs, numProps); if ((found < 1) || (PR_FALSE == ExpectEndProperty(aErrorCode, PR_TRUE))) { return PR_FALSE; } if (0 == (found & 1)) { // provide missing border width's values[0].SetIntValue(NS_STYLE_BORDER_WIDTH_MEDIUM, eCSSUnit_Enumerated); } if (0 == (found & 2)) { // provide missing border style's values[1].SetNoneValue(); } if (0 == (found & 4)) { // text color will be used values[2].SetIntValue(NS_STYLE_COLOR_MOZ_USE_TEXT_COLOR, eCSSUnit_Enumerated); } PRInt32 index; for (index = 0; index < 4; index++) { AppendValue(aDeclaration, kBorderWidthIDs[index], values[0], aChangeHint); AppendValue(aDeclaration, kBorderStyleIDs[index], values[1], aChangeHint); AppendValue(aDeclaration, kBorderColorIDs[index], values[2], aChangeHint); } return PR_TRUE; } PRBool CSSParserImpl::ParseBorderColor(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint) { return ParseBoxProperties(aErrorCode, aDeclaration, kBorderColorIDs, aChangeHint); } PRBool CSSParserImpl::ParseBorderSpacing(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint) { 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(aDeclaration, eCSSProperty_border_x_spacing, xValue, aChangeHint); AppendValue(aDeclaration, eCSSProperty_border_y_spacing, yValue, aChangeHint); 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(aDeclaration, eCSSProperty_border_x_spacing, xValue, aChangeHint); AppendValue(aDeclaration, eCSSProperty_border_y_spacing, xValue, aChangeHint); return PR_TRUE; } } return PR_FALSE; } PRBool CSSParserImpl::ParseBorderSide(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, const nsCSSProperty aPropIDs[], PRInt32& aChangeHint) { 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) { // reset border-color so color property gets used values[2].Reset(); } PRInt32 index; for (index = 0; index < numProps; index++) { AppendValue(aDeclaration, aPropIDs[index], values[index], aChangeHint); } return PR_TRUE; } PRBool CSSParserImpl::ParseBorderStyle(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint) { return ParseBoxProperties(aErrorCode, aDeclaration, kBorderStyleIDs, aChangeHint); } PRBool CSSParserImpl::ParseBorderWidth(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint) { return ParseBoxProperties(aErrorCode, aDeclaration, kBorderWidthIDs, aChangeHint); } PRBool CSSParserImpl::ParseBorderRadius(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint) { return ParseBoxProperties(aErrorCode, aDeclaration, kBorderRadiusIDs, aChangeHint); } #ifdef ENABLE_OUTLINE PRBool CSSParserImpl::ParseOutlineRadius(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint) { return ParseBoxProperties(aErrorCode, aDeclaration, kOutlineRadiusIDs, aChangeHint); } #endif PRBool CSSParserImpl::ParseBorderColors(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint, 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)) { aErrorCode = aDeclaration->AppendStructValue(aProperty, listHead); return NS_SUCCEEDED(aErrorCode); } 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::ParseClip(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint) { static const nsCSSProperty kClipIDs[] = { eCSSProperty_clip_top, eCSSProperty_clip_right, eCSSProperty_clip_bottom, eCSSProperty_clip_left }; if (! GetToken(aErrorCode, PR_TRUE)) { return PR_FALSE; } PRInt32 index; if ((eCSSToken_Ident == mToken.mType) && mToken.mIdent.EqualsIgnoreCase("auto")) { if (ExpectEndProperty(aErrorCode, PR_TRUE)) { nsCSSValue valueAuto(eCSSUnit_Auto); for (index = 0; index < 4; index++) { AppendValue(aDeclaration, kClipIDs[index], valueAuto, aChangeHint); } return PR_TRUE; } } else if ((eCSSToken_Ident == mToken.mType) && mToken.mIdent.EqualsIgnoreCase("inherit")) { if (ExpectEndProperty(aErrorCode, PR_TRUE)) { nsCSSValue inherit(eCSSUnit_Inherit); for (index = 0; index < 4; index++) { AppendValue(aDeclaration, kClipIDs[index], inherit, aChangeHint); } return PR_TRUE; } } else if ((eCSSToken_Ident == mToken.mType) && mToken.mIdent.EqualsIgnoreCase("-moz-initial")) { if (ExpectEndProperty(aErrorCode, PR_TRUE)) { nsCSSValue initial(eCSSUnit_Initial); for (index = 0; index < 4; index++) { AppendValue(aDeclaration, kClipIDs[index], initial, aChangeHint); } return PR_TRUE; } } else if ((eCSSToken_Function == mToken.mType) && mToken.mIdent.EqualsIgnoreCase("rect")) { if (!ExpectSymbol(aErrorCode, '(', PR_TRUE)) { return PR_FALSE; } nsCSSValue values[4]; for (index = 0; index < 4; index++) { if (! ParseVariant(aErrorCode, values[index], VARIANT_AL, nsnull)) { return PR_FALSE; } if (3 != index) { // skip optional commas between elements ExpectSymbol(aErrorCode, ',', PR_TRUE); } } if (!ExpectSymbol(aErrorCode, ')', PR_TRUE)) { return PR_FALSE; } if (ExpectEndProperty(aErrorCode, PR_TRUE)) { for (index = 0; index < 4; index++) { AppendValue(aDeclaration, kClipIDs[index], values[index], aChangeHint); } return PR_TRUE; } } else { UngetToken(); } return PR_FALSE; } PRBool CSSParserImpl::ParseImageRegion(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint) { static const nsCSSProperty kImageRegionIDs[] = { eCSSProperty_image_region_top, eCSSProperty_image_region_right, eCSSProperty_image_region_bottom, eCSSProperty_image_region_left }; if (!GetToken(aErrorCode, PR_TRUE)) return PR_FALSE; PRInt32 index; if ((eCSSToken_Ident == mToken.mType) && mToken.mIdent.EqualsIgnoreCase("auto")) { if (ExpectEndProperty(aErrorCode, PR_TRUE)) { nsCSSValue valueAuto(eCSSUnit_Auto); for (index = 0; index < 4; index++) { AppendValue(aDeclaration, kImageRegionIDs[index], valueAuto, aChangeHint); } return PR_TRUE; } } else if ((eCSSToken_Ident == mToken.mType) && mToken.mIdent.EqualsIgnoreCase("inherit")) { if (ExpectEndProperty(aErrorCode, PR_TRUE)) { nsCSSValue inherit(eCSSUnit_Inherit); for (index = 0; index < 4; index++) { AppendValue(aDeclaration, kImageRegionIDs[index], inherit, aChangeHint); } return PR_TRUE; } } else if ((eCSSToken_Ident == mToken.mType) && mToken.mIdent.EqualsIgnoreCase("-moz-initial")) { if (ExpectEndProperty(aErrorCode, PR_TRUE)) { nsCSSValue initial(eCSSUnit_Initial); for (index = 0; index < 4; index++) { AppendValue(aDeclaration, kImageRegionIDs[index], initial, aChangeHint); } return PR_TRUE; } } else if ((eCSSToken_Function == mToken.mType) && mToken.mIdent.EqualsIgnoreCase("rect")) { if (!ExpectSymbol(aErrorCode, '(', PR_TRUE)) return PR_FALSE; nsCSSValue values[4]; for (index = 0; index < 4; index++) { if (!ParseVariant(aErrorCode, values[index], VARIANT_AL, nsnull)) return PR_FALSE; if (3 != index) { // skip optional commas between elements ExpectSymbol(aErrorCode, ',', PR_TRUE); } } if (!ExpectSymbol(aErrorCode, ')', PR_TRUE)) return PR_FALSE; if (ExpectEndProperty(aErrorCode, PR_TRUE)) { for (index = 0; index < 4; index++) AppendValue(aDeclaration, kImageRegionIDs[index], values[index], aChangeHint); 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, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint) { nsCSSValue value; if (ParseVariant(aErrorCode, value, VARIANT_CONTENT | VARIANT_INHERIT, nsCSSProps::kContentKTable)) { if (eCSSUnit_Inherit == value.GetUnit() || eCSSUnit_Initial == value.GetUnit()) { if (ExpectEndProperty(aErrorCode, PR_TRUE)) { AppendValue(aDeclaration, eCSSProperty_content, value, aChangeHint); return PR_TRUE; } return PR_FALSE; } 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)) { if (aChangeHint < nsCSSProps::kHintTable[eCSSProperty_content]) { aChangeHint = nsCSSProps::kHintTable[eCSSProperty_content]; } aErrorCode = aDeclaration->AppendStructValue(eCSSProperty_content, listHead); return NS_SUCCEEDED(aErrorCode); } 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::ParseCounterData(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, nsCSSProperty aPropID, PRInt32& aChangeHint) { nsString* ident = NextIdent(aErrorCode); if (nsnull == ident) { return PR_FALSE; } if (ident->EqualsIgnoreCase("none")) { if (ExpectEndProperty(aErrorCode, PR_TRUE)) { AppendValue(aDeclaration, aPropID, nsCSSValue(eCSSUnit_None), aChangeHint); return PR_TRUE; } return PR_FALSE; } else if (ident->EqualsIgnoreCase("inherit")) { if (ExpectEndProperty(aErrorCode, PR_TRUE)) { AppendValue(aDeclaration, aPropID, nsCSSValue(eCSSUnit_Inherit), aChangeHint); return PR_TRUE; } return PR_FALSE; } else if (ident->EqualsIgnoreCase("-moz-initial")) { if (ExpectEndProperty(aErrorCode, PR_TRUE)) { AppendValue(aDeclaration, aPropID, nsCSSValue(eCSSUnit_Initial), aChangeHint); return PR_TRUE; } 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)) { if (aChangeHint < nsCSSProps::kHintTable[aPropID]) { aChangeHint = nsCSSProps::kHintTable[aPropID]; } aErrorCode = aDeclaration->AppendStructValue(aPropID, dataHead); return NS_SUCCEEDED(aErrorCode); } 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)) { if (aChangeHint < nsCSSProps::kHintTable[aPropID]) { aChangeHint = nsCSSProps::kHintTable[aPropID]; } aErrorCode = aDeclaration->AppendStructValue(aPropID, dataHead); return NS_SUCCEEDED(aErrorCode); } 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(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint) { 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(aDeclaration, eCSSProperty_cue_before, before, aChangeHint); AppendValue(aDeclaration, eCSSProperty_cue_after, after, aChangeHint); return PR_TRUE; } return PR_FALSE; } } if (ExpectEndProperty(aErrorCode, PR_TRUE)) { AppendValue(aDeclaration, eCSSProperty_cue_before, before, aChangeHint); AppendValue(aDeclaration, eCSSProperty_cue_after, before, aChangeHint); return PR_TRUE; } } return PR_FALSE; } PRBool CSSParserImpl::ParseCursor(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint) { nsCSSValue value; if (ParseVariant(aErrorCode, value, VARIANT_AHUK, nsCSSProps::kCursorKTable)) { if (eCSSUnit_URL == value.GetUnit()) { 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 (eCSSUnit_URL != value.GetUnit()) { if (PR_FALSE == ExpectEndProperty(aErrorCode, PR_TRUE)) { return PR_FALSE; } } if (ExpectEndProperty(aErrorCode, PR_TRUE)) { if (aChangeHint < nsCSSProps::kHintTable[eCSSProperty_cursor]) { aChangeHint = nsCSSProps::kHintTable[eCSSProperty_cursor]; } aErrorCode = aDeclaration->AppendStructValue(eCSSProperty_cursor, listHead); return NS_SUCCEEDED(aErrorCode); } if (ParseVariant(aErrorCode, value, VARIANT_AHUK, nsCSSProps::kCursorKTable)) { 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; } if (ExpectEndProperty(aErrorCode, PR_TRUE)) { AppendValue(aDeclaration, eCSSProperty_cursor, value, aChangeHint); return PR_TRUE; } } return PR_FALSE; } PRBool CSSParserImpl::ParseFont(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint) { 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(aDeclaration, eCSSProperty_font_family, family, aChangeHint); AppendValue(aDeclaration, eCSSProperty_font_style, family, aChangeHint); AppendValue(aDeclaration, eCSSProperty_font_variant, family, aChangeHint); AppendValue(aDeclaration, eCSSProperty_font_weight, family, aChangeHint); AppendValue(aDeclaration, eCSSProperty_font_size, family, aChangeHint); AppendValue(aDeclaration, eCSSProperty_line_height, family, aChangeHint); AppendValue(aDeclaration, eCSSProperty_font_stretch, family, aChangeHint); AppendValue(aDeclaration, eCSSProperty_font_size_adjust, family, aChangeHint); } else { AppendValue(aDeclaration, eCSSProperty_font_family, family, aChangeHint); // keyword value overrides everything else nsCSSValue empty; AppendValue(aDeclaration, eCSSProperty_font_style, empty, aChangeHint); AppendValue(aDeclaration, eCSSProperty_font_variant, empty, aChangeHint); AppendValue(aDeclaration, eCSSProperty_font_weight, empty, aChangeHint); AppendValue(aDeclaration, eCSSProperty_font_size, empty, aChangeHint); AppendValue(aDeclaration, eCSSProperty_line_height, empty, aChangeHint); AppendValue(aDeclaration, eCSSProperty_font_stretch, empty, aChangeHint); AppendValue(aDeclaration, eCSSProperty_font_size_adjust, empty, aChangeHint); } 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 (! ParseVariant(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(aDeclaration, eCSSProperty_font_family, family, aChangeHint); AppendValue(aDeclaration, eCSSProperty_font_style, values[0], aChangeHint); AppendValue(aDeclaration, eCSSProperty_font_variant, values[1], aChangeHint); AppendValue(aDeclaration, eCSSProperty_font_weight, values[2], aChangeHint); AppendValue(aDeclaration, eCSSProperty_font_size, size, aChangeHint); AppendValue(aDeclaration, eCSSProperty_line_height, lineHeight, aChangeHint); AppendValue(aDeclaration, eCSSProperty_font_stretch, nsCSSValue(eCSSUnit_Normal), aChangeHint); AppendValue(aDeclaration, eCSSProperty_font_size_adjust, nsCSSValue(eCSSUnit_None), aChangeHint); return PR_TRUE; } } return PR_FALSE; } PRBool CSSParserImpl::ParseFontWeight(PRInt32& 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(PRInt32& 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) { if (tk->mIdent.EqualsIgnoreCase("inherit")) { aValue.SetInheritValue(); return PR_TRUE; } else if (tk->mIdent.EqualsIgnoreCase("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.Length() == 0) { return PR_FALSE; } aValue.SetStringValue(family, eCSSUnit_String); return PR_TRUE; } PRBool CSSParserImpl::ParseListStyle(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint) { 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(aDeclaration, listStyleIDs[index], values[index], aChangeHint); } return PR_TRUE; } PRBool CSSParserImpl::ParseMargin(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint) { static const nsCSSProperty kMarginSideIDs[] = { eCSSProperty_margin_top, eCSSProperty_margin_right, eCSSProperty_margin_bottom, eCSSProperty_margin_left }; return ParseBoxProperties(aErrorCode, aDeclaration, kMarginSideIDs, aChangeHint); } PRBool CSSParserImpl::ParseMarks(PRInt32& 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(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint) { const PRInt32 numProps = 3; static const nsCSSProperty kOutlineIDs[] = { eCSSProperty_outline_color, eCSSProperty_outline_style, eCSSProperty_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(aDeclaration, kOutlineIDs[index], values[index], aChangeHint); } return PR_TRUE; } #endif PRBool CSSParserImpl::ParsePadding(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint) { static const nsCSSProperty kPaddingSideIDs[] = { eCSSProperty_padding_top, eCSSProperty_padding_right, eCSSProperty_padding_bottom, eCSSProperty_padding_left }; return ParseBoxProperties(aErrorCode, aDeclaration, kPaddingSideIDs, aChangeHint); } PRBool CSSParserImpl::ParsePause(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint) { 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(aDeclaration, eCSSProperty_pause_before, before, aChangeHint); AppendValue(aDeclaration, eCSSProperty_pause_after, after, aChangeHint); return PR_TRUE; } return PR_FALSE; } } if (ExpectEndProperty(aErrorCode, PR_TRUE)) { AppendValue(aDeclaration, eCSSProperty_pause_before, before, aChangeHint); AppendValue(aDeclaration, eCSSProperty_pause_after, before, aChangeHint); return PR_TRUE; } } return PR_FALSE; } PRBool CSSParserImpl::ParsePlayDuring(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint) { 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(aDeclaration, eCSSProperty_play_during, playDuring, aChangeHint); AppendValue(aDeclaration, eCSSProperty_play_during_flags, flags, aChangeHint); return PR_TRUE; } } return PR_FALSE; } PRBool CSSParserImpl::ParseQuotes(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32 &aChangeHint) { 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)) { if (aChangeHint < nsCSSProps::kHintTable[eCSSProperty_quotes]) { aChangeHint = nsCSSProps::kHintTable[eCSSProperty_quotes]; } aErrorCode = aDeclaration->AppendStructValue(eCSSProperty_quotes, quotesHead); return NS_SUCCEEDED(aErrorCode); } // 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)) { AppendValue(aDeclaration, eCSSProperty_quotes_open, open, aChangeHint); return PR_TRUE; } } return PR_FALSE; } PRBool CSSParserImpl::ParseSize(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint) { 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(aDeclaration, eCSSProperty_size_width, width, aChangeHint); AppendValue(aDeclaration, eCSSProperty_size_height, height, aChangeHint); return PR_TRUE; } return PR_FALSE; } } if (ExpectEndProperty(aErrorCode, PR_TRUE)) { AppendValue(aDeclaration, eCSSProperty_size_width, width, aChangeHint); AppendValue(aDeclaration, eCSSProperty_size_height, width, aChangeHint); return PR_TRUE; } } return PR_FALSE; } PRBool CSSParserImpl::ParseTextDecoration(PRInt32& 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(PRInt32& aErrorCode, nsCSSDeclaration* aDeclaration, PRInt32& aChangeHint) { 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)) { if (aChangeHint < nsCSSProps::kHintTable[eCSSProperty_text_shadow]) { aChangeHint = nsCSSProps::kHintTable[eCSSProperty_text_shadow]; } aErrorCode = aDeclaration->AppendStructValue(eCSSProperty_text_shadow, shadowHead); return NS_SUCCEEDED(aErrorCode); } break; } } delete shadowHead; return PR_FALSE; } // value is inherit or none if (ExpectEndProperty(aErrorCode, PR_TRUE)) { AppendValue(aDeclaration, eCSSProperty_text_shadow_x, value, aChangeHint); return PR_TRUE; } } return PR_FALSE; } NS_IMETHODIMP CSSParserImpl::GetCharset(/*out*/nsAWritableString &aCharsetDest) const { aCharsetDest = mCharset; return NS_OK; } NS_IMETHODIMP CSSParserImpl::SetCharset(/*in*/ const nsAReadableString &aCharsetSrc) { mCharset = aCharsetSrc; return NS_OK; }