mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-29 07:42:04 +00:00
Revised API to be com-ish and added ParseDeclarations; implement ParseDeclartions using basic declaration handling routines
This commit is contained in:
kipp
parent
d9e2ce27b1
commit
b20743e28a
@ -31,6 +31,10 @@
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#include "nsVoidArray.h"
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#include "nsColor.h"
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// XXX TODO:
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// - rework aErrorCode stuff: switch over to nsresult
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// - bug: "color: red {fish};" emits a property for color instead of zapping it
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static NS_DEFINE_IID(kICSSParserIID, NS_ICSS_PARSER_IID);
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static NS_DEFINE_IID(kICSSStyleSheetIID, NS_ICSS_STYLE_SHEET_IID);
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static NS_DEFINE_IID(kIStyleSheetIID, NS_ISTYLE_SHEET_IID);
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@ -186,13 +190,17 @@ public:
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NS_DECL_ISUPPORTS
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virtual PRUint32 GetInfoMask();
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NS_IMETHOD GetInfoMask(PRUint32& aResult);
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virtual nsresult SetStyleSheet(nsIStyleSheet* aSheet);
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NS_IMETHOD SetStyleSheet(nsIStyleSheet* aSheet);
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virtual nsIStyleSheet* Parse(PRInt32* aErrorCode,
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nsIUnicharInputStream* aInput,
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nsIURL* aInputURL);
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NS_IMETHOD Parse(nsIUnicharInputStream* aInput,
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nsIURL* aInputURL,
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nsIStyleSheet*& aResult);
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NS_IMETHOD ParseDeclarations(const nsString& aDeclaration,
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nsIURL* aBaseURL,
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nsIStyleRule*& aResult);
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protected:
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PRBool GetToken(PRInt32* aErrorCode, PRBool aSkipWS);
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@ -202,7 +210,7 @@ protected:
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nsString* NextIdent(PRInt32* aErrorCode);
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void SkipUntil(PRInt32* aErrorCode, PRUnichar aStopSymbol);
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void SkipRuleSet(PRInt32* aErrorCode);
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void SkipDeclaration(PRInt32* aErrorCode);
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PRBool SkipDeclaration(PRInt32* aErrorCode, PRBool aCheckForBraces);
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PRBool ParseRuleSet(PRInt32* aErrorCode);
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PRBool ParseAtRule(PRInt32* aErrorCode);
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@ -211,8 +219,11 @@ protected:
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PRBool ParseSelectorGroup(PRInt32* aErrorCode, SelectorList* aListHead);
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PRBool ParseSelectorList(PRInt32* aErrorCode, SelectorList* aListHead);
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PRBool ParseSelector(PRInt32* aErrorCode, Selector* aSelectorResult);
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nsICSSDeclaration* ParseDeclarationBlock(PRInt32* aErrorCode);
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PRBool ParseDeclaration(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration);
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nsICSSDeclaration* ParseDeclarationBlock(PRInt32* aErrorCode,
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PRBool aCheckForBraces);
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PRBool ParseDeclaration(PRInt32* aErrorCode,
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nsICSSDeclaration* aDeclaration,
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PRBool aCheckForBraces);
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PRBool ParseProperty(PRInt32* aErrorCode, const char* aName,
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nsICSSDeclaration* aDeclaration);
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PRBool ParseProperty(PRInt32* aErrorCode, const char* aName,
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@ -313,12 +324,15 @@ CSSParserImpl::~CSSParserImpl()
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NS_IF_RELEASE(mSheet);
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}
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PRUint32 CSSParserImpl::GetInfoMask()
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NS_METHOD
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CSSParserImpl::GetInfoMask(PRUint32& aResult)
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{
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return NS_CSS_GETINFO_CSS1 | NS_CSS_GETINFO_CSSP;
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aResult = NS_CSS_GETINFO_CSS1 | NS_CSS_GETINFO_CSSP;
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return NS_OK;
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}
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nsresult CSSParserImpl::SetStyleSheet(nsIStyleSheet* aSheet)
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NS_METHOD
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CSSParserImpl::SetStyleSheet(nsIStyleSheet* aSheet)
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{
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NS_PRECONDITION(nsnull != aSheet, "null ptr");
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if (nsnull == aSheet) {
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@ -340,14 +354,16 @@ nsresult CSSParserImpl::SetStyleSheet(nsIStyleSheet* aSheet)
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return NS_OK;
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}
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nsIStyleSheet* CSSParserImpl::Parse(PRInt32* aErrorCode,
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nsIUnicharInputStream* aInput,
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nsIURL* aInputURL)
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NS_METHOD
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CSSParserImpl::Parse(nsIUnicharInputStream* aInput,
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nsIURL* aInputURL,
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nsIStyleSheet*& aResult)
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{
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if (nsnull == mSheet) {
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NS_NewCSSStyleSheet(&mSheet, aInputURL);
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}
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PRInt32 errorCode = NS_OK;
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mScanner = new nsCSSScanner();
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mScanner->Init(aInput);
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mURL = aInputURL;
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@ -358,11 +374,11 @@ nsIStyleSheet* CSSParserImpl::Parse(PRInt32* aErrorCode,
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nsCSSToken* tk = &mToken;
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for (;;) {
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// Get next non-whitespace token
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if (!GetToken(aErrorCode, PR_TRUE)) {
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if (!GetToken(&errorCode, PR_TRUE)) {
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break;
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}
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if (eCSSToken_AtKeyword == tk->mType) {
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ParseAtRule(aErrorCode);
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ParseAtRule(&errorCode);
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continue;
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} else if (eCSSToken_Symbol == tk->mType) {
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// Discard dangling semicolons. This is not part of the CSS1
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@ -373,17 +389,64 @@ nsIStyleSheet* CSSParserImpl::Parse(PRInt32* aErrorCode,
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}
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mInHead = PR_FALSE;
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UngetToken();
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ParseRuleSet(aErrorCode);
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ParseRuleSet(&errorCode);
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}
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delete mScanner;
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mScanner = nsnull;
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NS_IF_RELEASE(mURL);
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nsIStyleSheet* rv = nsnull;
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mSheet->QueryInterface(kIStyleSheetIID, (void**)&rv);
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nsIStyleSheet* sheet = nsnull;
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mSheet->QueryInterface(kIStyleSheetIID, (void**)&sheet);
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aResult = sheet;
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return NS_OK;
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}
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NS_METHOD
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CSSParserImpl::ParseDeclarations(const nsString& aDeclaration,
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nsIURL* aBaseURL,
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nsIStyleRule*& aResult)
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{
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nsString* str = new nsString(aDeclaration);
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if (nsnull == str) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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nsIUnicharInputStream* input = nsnull;
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nsresult rv = NS_NewStringUnicharInputStream(&input, str);
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if (NS_OK != rv) {
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return rv;
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}
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mScanner = new nsCSSScanner();
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mScanner->Init(input);
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NS_RELEASE(input);
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mURL = aBaseURL;
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NS_IF_ADDREF(mURL);
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mInHead = PR_FALSE;
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PRInt32 errorCode = NS_OK;
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nsICSSDeclaration* declaration = ParseDeclarationBlock(&errorCode, PR_FALSE);
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if (nsnull != declaration) {
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// Create a style rule for the delcaration
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nsICSSStyleRule* rule = nsnull;
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NS_NewCSSStyleRule(&rule, nsCSSSelector());
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rule->SetDeclaration(declaration);
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rule->SetWeight(0x7fffffff);
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aResult = rule;
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}
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else {
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aResult = nsnull;
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}
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delete mScanner;
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mScanner = nsnull;
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NS_IF_RELEASE(mURL);
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return NS_OK;
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}
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//----------------------------------------------------------------------
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PRBool CSSParserImpl::GetToken(PRInt32* aErrorCode, PRBool aSkipWS)
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@ -529,9 +592,10 @@ void CSSParserImpl::ProcessImport(const nsString& aURLSpec)
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if (NS_OK == rv) {
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CSSParserImpl *parser = new CSSParserImpl();
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nsIStyleSheet* childSheet = parser->Parse(&ec, uin, url);
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nsIStyleSheet* childSheet;
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rv = parser->Parse(uin, url, childSheet);
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NS_RELEASE(parser);
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if (nsnull != childSheet) {
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if ((NS_OK == rv) && (nsnull != childSheet)) {
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nsICSSStyleSheet* cssChild = nsnull;
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if (NS_OK == childSheet->QueryInterface(kICSSStyleSheetIID, (void**)&cssChild)) {
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mSheet->AppendStyleSheet(cssChild);
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@ -569,22 +633,25 @@ void CSSParserImpl::SkipUntil(PRInt32* aErrorCode, PRUnichar aStopSymbol)
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}
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}
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void CSSParserImpl::SkipDeclaration(PRInt32* aErrorCode)
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PRBool
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CSSParserImpl::SkipDeclaration(PRInt32* aErrorCode, PRBool aCheckForBraces)
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{
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nsCSSToken* tk = &mToken;
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for (;;) {
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if (!GetToken(aErrorCode, PR_TRUE)) {
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break;
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return PR_FALSE;
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}
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if (eCSSToken_Symbol == tk->mType) {
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PRUnichar symbol = tk->mSymbol;
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if (';' == symbol) {
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break;
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}
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if (aCheckForBraces) {
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if ('}' == symbol) {
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UngetToken();
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break;
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}
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}
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if ('{' == symbol) {
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SkipUntil(aErrorCode, '}');
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} else if ('(' == symbol) {
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@ -594,6 +661,7 @@ void CSSParserImpl::SkipDeclaration(PRInt32* aErrorCode)
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}
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}
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}
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return PR_TRUE;
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}
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void CSSParserImpl::SkipRuleSet(PRInt32* aErrorCode)
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@ -631,7 +699,7 @@ PRBool CSSParserImpl::ParseRuleSet(PRInt32* aErrorCode)
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}
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// Next parse the declaration block
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nsICSSDeclaration* declaration = ParseDeclarationBlock(aErrorCode);
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nsICSSDeclaration* declaration = ParseDeclarationBlock(aErrorCode, PR_TRUE);
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if (nsnull == declaration) {
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// XXX skip something here
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slist->Destroy();
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@ -880,23 +948,31 @@ PRBool CSSParserImpl::ParseSelector(PRInt32* aErrorCode,
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return PR_TRUE;
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}
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nsICSSDeclaration* CSSParserImpl::ParseDeclarationBlock(PRInt32* aErrorCode)
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nsICSSDeclaration*
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CSSParserImpl::ParseDeclarationBlock(PRInt32* aErrorCode,
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PRBool aCheckForBraces)
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{
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if (aCheckForBraces) {
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if (!ExpectSymbol(aErrorCode, '{', PR_TRUE)) {
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return nsnull;
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}
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}
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nsICSSDeclaration* declaration = nsnull;
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if (NS_OK == NS_NewCSSDeclaration(&declaration)) {
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PRInt32 count = 0;
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for (;;) {
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if (ParseDeclaration(aErrorCode, declaration)) {
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if (ParseDeclaration(aErrorCode, declaration, aCheckForBraces)) {
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count++; // count declarations
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}
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else {
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SkipDeclaration(aErrorCode);
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if (!SkipDeclaration(aErrorCode, aCheckForBraces)) {
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break;
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}
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if (aCheckForBraces) {
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if (ExpectSymbol(aErrorCode, '}', PR_TRUE)) {
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break;
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}
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}
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// Since the skipped declaration didn't end the block we parse
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// the next declaration.
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}
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@ -988,7 +1064,8 @@ PRBool CSSParserImpl::ParseColorComponent(PRInt32* aErrorCode,
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PRBool
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CSSParserImpl::ParseDeclaration(PRInt32* aErrorCode,
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nsICSSDeclaration* aDeclaration)
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nsICSSDeclaration* aDeclaration,
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PRBool aCheckForBraces)
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{
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// Get property name
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nsCSSToken* tk = &mToken;
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@ -1022,9 +1099,13 @@ CSSParserImpl::ParseDeclaration(PRInt32* aErrorCode,
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// See if the declaration is followed by a "!important" declaration
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PRBool isImportant = PR_FALSE;
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if (!GetToken(aErrorCode, PR_TRUE)) {
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// Premature eof is not ok
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if (aCheckForBraces) {
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// Premature eof is not ok when proper termination is mandated
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return PR_FALSE;
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}
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return PR_TRUE;
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}
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else {
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if (eCSSToken_Symbol == tk->mType) {
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if ('!' == tk->mSymbol) {
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// Look for important ident
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@ -1048,17 +1129,29 @@ CSSParserImpl::ParseDeclaration(PRInt32* aErrorCode,
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// Not a !important declaration
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UngetToken();
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}
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}
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// XXX do something with isImportant flag
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// Make sure valid property declaration is terminated with either a
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// semicolon or a right-curly-brace.
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// semicolon or a right-curly-brace (when aCheckForBraces is true).
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// When aCheckForBraces is false, proper termination is either
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// semicolon or EOF.
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if (!GetToken(aErrorCode, PR_TRUE)) {
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if (aCheckForBraces) {
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// Premature eof is not ok
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return PR_FALSE;
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}
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return PR_TRUE;
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}
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if (eCSSToken_Symbol == tk->mType) {
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if (';' == tk->mSymbol) {
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return PR_TRUE;
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}
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if (!aCheckForBraces) {
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// If we didn't hit eof and we didn't see a semicolon then the
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// declaration is not properly terminated.
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return PR_FALSE;
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}
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if ('}' == tk->mSymbol) {
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UngetToken();
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return PR_TRUE;
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@ -31,6 +31,10 @@
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#include "nsVoidArray.h"
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#include "nsColor.h"
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// XXX TODO:
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// - rework aErrorCode stuff: switch over to nsresult
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// - bug: "color: red {fish};" emits a property for color instead of zapping it
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static NS_DEFINE_IID(kICSSParserIID, NS_ICSS_PARSER_IID);
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static NS_DEFINE_IID(kICSSStyleSheetIID, NS_ICSS_STYLE_SHEET_IID);
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static NS_DEFINE_IID(kIStyleSheetIID, NS_ISTYLE_SHEET_IID);
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@ -186,13 +190,17 @@ public:
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NS_DECL_ISUPPORTS
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virtual PRUint32 GetInfoMask();
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NS_IMETHOD GetInfoMask(PRUint32& aResult);
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virtual nsresult SetStyleSheet(nsIStyleSheet* aSheet);
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NS_IMETHOD SetStyleSheet(nsIStyleSheet* aSheet);
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virtual nsIStyleSheet* Parse(PRInt32* aErrorCode,
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nsIUnicharInputStream* aInput,
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nsIURL* aInputURL);
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NS_IMETHOD Parse(nsIUnicharInputStream* aInput,
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nsIURL* aInputURL,
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nsIStyleSheet*& aResult);
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NS_IMETHOD ParseDeclarations(const nsString& aDeclaration,
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nsIURL* aBaseURL,
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nsIStyleRule*& aResult);
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protected:
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PRBool GetToken(PRInt32* aErrorCode, PRBool aSkipWS);
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@ -202,7 +210,7 @@ protected:
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nsString* NextIdent(PRInt32* aErrorCode);
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void SkipUntil(PRInt32* aErrorCode, PRUnichar aStopSymbol);
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void SkipRuleSet(PRInt32* aErrorCode);
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void SkipDeclaration(PRInt32* aErrorCode);
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PRBool SkipDeclaration(PRInt32* aErrorCode, PRBool aCheckForBraces);
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PRBool ParseRuleSet(PRInt32* aErrorCode);
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PRBool ParseAtRule(PRInt32* aErrorCode);
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@ -211,8 +219,11 @@ protected:
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PRBool ParseSelectorGroup(PRInt32* aErrorCode, SelectorList* aListHead);
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PRBool ParseSelectorList(PRInt32* aErrorCode, SelectorList* aListHead);
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PRBool ParseSelector(PRInt32* aErrorCode, Selector* aSelectorResult);
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nsICSSDeclaration* ParseDeclarationBlock(PRInt32* aErrorCode);
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PRBool ParseDeclaration(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration);
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nsICSSDeclaration* ParseDeclarationBlock(PRInt32* aErrorCode,
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PRBool aCheckForBraces);
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PRBool ParseDeclaration(PRInt32* aErrorCode,
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nsICSSDeclaration* aDeclaration,
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PRBool aCheckForBraces);
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PRBool ParseProperty(PRInt32* aErrorCode, const char* aName,
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nsICSSDeclaration* aDeclaration);
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PRBool ParseProperty(PRInt32* aErrorCode, const char* aName,
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@ -313,12 +324,15 @@ CSSParserImpl::~CSSParserImpl()
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NS_IF_RELEASE(mSheet);
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}
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PRUint32 CSSParserImpl::GetInfoMask()
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NS_METHOD
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CSSParserImpl::GetInfoMask(PRUint32& aResult)
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{
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return NS_CSS_GETINFO_CSS1 | NS_CSS_GETINFO_CSSP;
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aResult = NS_CSS_GETINFO_CSS1 | NS_CSS_GETINFO_CSSP;
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return NS_OK;
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}
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nsresult CSSParserImpl::SetStyleSheet(nsIStyleSheet* aSheet)
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NS_METHOD
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CSSParserImpl::SetStyleSheet(nsIStyleSheet* aSheet)
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{
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NS_PRECONDITION(nsnull != aSheet, "null ptr");
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if (nsnull == aSheet) {
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@ -340,14 +354,16 @@ nsresult CSSParserImpl::SetStyleSheet(nsIStyleSheet* aSheet)
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return NS_OK;
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}
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nsIStyleSheet* CSSParserImpl::Parse(PRInt32* aErrorCode,
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nsIUnicharInputStream* aInput,
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nsIURL* aInputURL)
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NS_METHOD
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CSSParserImpl::Parse(nsIUnicharInputStream* aInput,
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nsIURL* aInputURL,
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nsIStyleSheet*& aResult)
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{
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if (nsnull == mSheet) {
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NS_NewCSSStyleSheet(&mSheet, aInputURL);
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}
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PRInt32 errorCode = NS_OK;
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mScanner = new nsCSSScanner();
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mScanner->Init(aInput);
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mURL = aInputURL;
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@ -358,11 +374,11 @@ nsIStyleSheet* CSSParserImpl::Parse(PRInt32* aErrorCode,
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nsCSSToken* tk = &mToken;
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for (;;) {
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// Get next non-whitespace token
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if (!GetToken(aErrorCode, PR_TRUE)) {
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if (!GetToken(&errorCode, PR_TRUE)) {
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break;
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}
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if (eCSSToken_AtKeyword == tk->mType) {
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ParseAtRule(aErrorCode);
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ParseAtRule(&errorCode);
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continue;
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} else if (eCSSToken_Symbol == tk->mType) {
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// Discard dangling semicolons. This is not part of the CSS1
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@ -373,17 +389,64 @@ nsIStyleSheet* CSSParserImpl::Parse(PRInt32* aErrorCode,
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}
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mInHead = PR_FALSE;
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UngetToken();
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ParseRuleSet(aErrorCode);
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ParseRuleSet(&errorCode);
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}
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delete mScanner;
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mScanner = nsnull;
|
||||
NS_IF_RELEASE(mURL);
|
||||
|
||||
nsIStyleSheet* rv = nsnull;
|
||||
mSheet->QueryInterface(kIStyleSheetIID, (void**)&rv);
|
||||
nsIStyleSheet* sheet = nsnull;
|
||||
mSheet->QueryInterface(kIStyleSheetIID, (void**)&sheet);
|
||||
aResult = sheet;
|
||||
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
NS_METHOD
|
||||
CSSParserImpl::ParseDeclarations(const nsString& aDeclaration,
|
||||
nsIURL* aBaseURL,
|
||||
nsIStyleRule*& aResult)
|
||||
{
|
||||
nsString* str = new nsString(aDeclaration);
|
||||
if (nsnull == str) {
|
||||
return NS_ERROR_OUT_OF_MEMORY;
|
||||
}
|
||||
nsIUnicharInputStream* input = nsnull;
|
||||
nsresult rv = NS_NewStringUnicharInputStream(&input, str);
|
||||
if (NS_OK != rv) {
|
||||
return rv;
|
||||
}
|
||||
|
||||
mScanner = new nsCSSScanner();
|
||||
mScanner->Init(input);
|
||||
NS_RELEASE(input);
|
||||
|
||||
mURL = aBaseURL;
|
||||
NS_IF_ADDREF(mURL);
|
||||
|
||||
mInHead = PR_FALSE;
|
||||
PRInt32 errorCode = NS_OK;
|
||||
|
||||
nsICSSDeclaration* declaration = ParseDeclarationBlock(&errorCode, PR_FALSE);
|
||||
if (nsnull != declaration) {
|
||||
// Create a style rule for the delcaration
|
||||
nsICSSStyleRule* rule = nsnull;
|
||||
NS_NewCSSStyleRule(&rule, nsCSSSelector());
|
||||
rule->SetDeclaration(declaration);
|
||||
rule->SetWeight(0x7fffffff);
|
||||
aResult = rule;
|
||||
}
|
||||
else {
|
||||
aResult = nsnull;
|
||||
}
|
||||
|
||||
delete mScanner;
|
||||
mScanner = nsnull;
|
||||
NS_IF_RELEASE(mURL);
|
||||
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
//----------------------------------------------------------------------
|
||||
|
||||
PRBool CSSParserImpl::GetToken(PRInt32* aErrorCode, PRBool aSkipWS)
|
||||
@ -529,9 +592,10 @@ void CSSParserImpl::ProcessImport(const nsString& aURLSpec)
|
||||
|
||||
if (NS_OK == rv) {
|
||||
CSSParserImpl *parser = new CSSParserImpl();
|
||||
nsIStyleSheet* childSheet = parser->Parse(&ec, uin, url);
|
||||
nsIStyleSheet* childSheet;
|
||||
rv = parser->Parse(uin, url, childSheet);
|
||||
NS_RELEASE(parser);
|
||||
if (nsnull != childSheet) {
|
||||
if ((NS_OK == rv) && (nsnull != childSheet)) {
|
||||
nsICSSStyleSheet* cssChild = nsnull;
|
||||
if (NS_OK == childSheet->QueryInterface(kICSSStyleSheetIID, (void**)&cssChild)) {
|
||||
mSheet->AppendStyleSheet(cssChild);
|
||||
@ -569,22 +633,25 @@ void CSSParserImpl::SkipUntil(PRInt32* aErrorCode, PRUnichar aStopSymbol)
|
||||
}
|
||||
}
|
||||
|
||||
void CSSParserImpl::SkipDeclaration(PRInt32* aErrorCode)
|
||||
PRBool
|
||||
CSSParserImpl::SkipDeclaration(PRInt32* aErrorCode, PRBool aCheckForBraces)
|
||||
{
|
||||
nsCSSToken* tk = &mToken;
|
||||
for (;;) {
|
||||
if (!GetToken(aErrorCode, PR_TRUE)) {
|
||||
break;
|
||||
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) {
|
||||
@ -594,6 +661,7 @@ void CSSParserImpl::SkipDeclaration(PRInt32* aErrorCode)
|
||||
}
|
||||
}
|
||||
}
|
||||
return PR_TRUE;
|
||||
}
|
||||
|
||||
void CSSParserImpl::SkipRuleSet(PRInt32* aErrorCode)
|
||||
@ -631,7 +699,7 @@ PRBool CSSParserImpl::ParseRuleSet(PRInt32* aErrorCode)
|
||||
}
|
||||
|
||||
// Next parse the declaration block
|
||||
nsICSSDeclaration* declaration = ParseDeclarationBlock(aErrorCode);
|
||||
nsICSSDeclaration* declaration = ParseDeclarationBlock(aErrorCode, PR_TRUE);
|
||||
if (nsnull == declaration) {
|
||||
// XXX skip something here
|
||||
slist->Destroy();
|
||||
@ -880,23 +948,31 @@ PRBool CSSParserImpl::ParseSelector(PRInt32* aErrorCode,
|
||||
return PR_TRUE;
|
||||
}
|
||||
|
||||
nsICSSDeclaration* CSSParserImpl::ParseDeclarationBlock(PRInt32* aErrorCode)
|
||||
nsICSSDeclaration*
|
||||
CSSParserImpl::ParseDeclarationBlock(PRInt32* aErrorCode,
|
||||
PRBool aCheckForBraces)
|
||||
{
|
||||
if (aCheckForBraces) {
|
||||
if (!ExpectSymbol(aErrorCode, '{', PR_TRUE)) {
|
||||
return nsnull;
|
||||
}
|
||||
}
|
||||
nsICSSDeclaration* declaration = nsnull;
|
||||
if (NS_OK == NS_NewCSSDeclaration(&declaration)) {
|
||||
PRInt32 count = 0;
|
||||
for (;;) {
|
||||
if (ParseDeclaration(aErrorCode, declaration)) {
|
||||
if (ParseDeclaration(aErrorCode, declaration, aCheckForBraces)) {
|
||||
count++; // count declarations
|
||||
}
|
||||
else {
|
||||
SkipDeclaration(aErrorCode);
|
||||
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.
|
||||
}
|
||||
@ -988,7 +1064,8 @@ PRBool CSSParserImpl::ParseColorComponent(PRInt32* aErrorCode,
|
||||
|
||||
PRBool
|
||||
CSSParserImpl::ParseDeclaration(PRInt32* aErrorCode,
|
||||
nsICSSDeclaration* aDeclaration)
|
||||
nsICSSDeclaration* aDeclaration,
|
||||
PRBool aCheckForBraces)
|
||||
{
|
||||
// Get property name
|
||||
nsCSSToken* tk = &mToken;
|
||||
@ -1022,9 +1099,13 @@ CSSParserImpl::ParseDeclaration(PRInt32* aErrorCode,
|
||||
// See if the declaration is followed by a "!important" declaration
|
||||
PRBool isImportant = PR_FALSE;
|
||||
if (!GetToken(aErrorCode, PR_TRUE)) {
|
||||
// Premature eof is not ok
|
||||
if (aCheckForBraces) {
|
||||
// Premature eof is not ok when proper termination is mandated
|
||||
return PR_FALSE;
|
||||
}
|
||||
return PR_TRUE;
|
||||
}
|
||||
else {
|
||||
if (eCSSToken_Symbol == tk->mType) {
|
||||
if ('!' == tk->mSymbol) {
|
||||
// Look for important ident
|
||||
@ -1048,17 +1129,29 @@ CSSParserImpl::ParseDeclaration(PRInt32* aErrorCode,
|
||||
// Not a !important declaration
|
||||
UngetToken();
|
||||
}
|
||||
}
|
||||
// XXX do something with isImportant flag
|
||||
|
||||
// Make sure valid property declaration is terminated with either a
|
||||
// semicolon or a right-curly-brace.
|
||||
// semicolon or a right-curly-brace (when aCheckForBraces is true).
|
||||
// When aCheckForBraces is false, proper termination is either
|
||||
// semicolon or EOF.
|
||||
if (!GetToken(aErrorCode, PR_TRUE)) {
|
||||
if (aCheckForBraces) {
|
||||
// Premature eof is not ok
|
||||
return PR_FALSE;
|
||||
}
|
||||
return PR_TRUE;
|
||||
}
|
||||
if (eCSSToken_Symbol == tk->mType) {
|
||||
if (';' == tk->mSymbol) {
|
||||
return PR_TRUE;
|
||||
}
|
||||
if (!aCheckForBraces) {
|
||||
// If we didn't hit eof and we didn't see a semicolon then the
|
||||
// declaration is not properly terminated.
|
||||
return PR_FALSE;
|
||||
}
|
||||
if ('}' == tk->mSymbol) {
|
||||
UngetToken();
|
||||
return PR_TRUE;
|
||||
|
||||
@ -31,6 +31,10 @@
|
||||
#include "nsVoidArray.h"
|
||||
#include "nsColor.h"
|
||||
|
||||
// XXX TODO:
|
||||
// - rework aErrorCode stuff: switch over to nsresult
|
||||
// - bug: "color: red {fish};" emits a property for color instead of zapping it
|
||||
|
||||
static NS_DEFINE_IID(kICSSParserIID, NS_ICSS_PARSER_IID);
|
||||
static NS_DEFINE_IID(kICSSStyleSheetIID, NS_ICSS_STYLE_SHEET_IID);
|
||||
static NS_DEFINE_IID(kIStyleSheetIID, NS_ISTYLE_SHEET_IID);
|
||||
@ -186,13 +190,17 @@ public:
|
||||
|
||||
NS_DECL_ISUPPORTS
|
||||
|
||||
virtual PRUint32 GetInfoMask();
|
||||
NS_IMETHOD GetInfoMask(PRUint32& aResult);
|
||||
|
||||
virtual nsresult SetStyleSheet(nsIStyleSheet* aSheet);
|
||||
NS_IMETHOD SetStyleSheet(nsIStyleSheet* aSheet);
|
||||
|
||||
virtual nsIStyleSheet* Parse(PRInt32* aErrorCode,
|
||||
nsIUnicharInputStream* aInput,
|
||||
nsIURL* aInputURL);
|
||||
NS_IMETHOD Parse(nsIUnicharInputStream* aInput,
|
||||
nsIURL* aInputURL,
|
||||
nsIStyleSheet*& aResult);
|
||||
|
||||
NS_IMETHOD ParseDeclarations(const nsString& aDeclaration,
|
||||
nsIURL* aBaseURL,
|
||||
nsIStyleRule*& aResult);
|
||||
|
||||
protected:
|
||||
PRBool GetToken(PRInt32* aErrorCode, PRBool aSkipWS);
|
||||
@ -202,7 +210,7 @@ protected:
|
||||
nsString* NextIdent(PRInt32* aErrorCode);
|
||||
void SkipUntil(PRInt32* aErrorCode, PRUnichar aStopSymbol);
|
||||
void SkipRuleSet(PRInt32* aErrorCode);
|
||||
void SkipDeclaration(PRInt32* aErrorCode);
|
||||
PRBool SkipDeclaration(PRInt32* aErrorCode, PRBool aCheckForBraces);
|
||||
|
||||
PRBool ParseRuleSet(PRInt32* aErrorCode);
|
||||
PRBool ParseAtRule(PRInt32* aErrorCode);
|
||||
@ -211,8 +219,11 @@ protected:
|
||||
PRBool ParseSelectorGroup(PRInt32* aErrorCode, SelectorList* aListHead);
|
||||
PRBool ParseSelectorList(PRInt32* aErrorCode, SelectorList* aListHead);
|
||||
PRBool ParseSelector(PRInt32* aErrorCode, Selector* aSelectorResult);
|
||||
nsICSSDeclaration* ParseDeclarationBlock(PRInt32* aErrorCode);
|
||||
PRBool ParseDeclaration(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration);
|
||||
nsICSSDeclaration* ParseDeclarationBlock(PRInt32* aErrorCode,
|
||||
PRBool aCheckForBraces);
|
||||
PRBool ParseDeclaration(PRInt32* aErrorCode,
|
||||
nsICSSDeclaration* aDeclaration,
|
||||
PRBool aCheckForBraces);
|
||||
PRBool ParseProperty(PRInt32* aErrorCode, const char* aName,
|
||||
nsICSSDeclaration* aDeclaration);
|
||||
PRBool ParseProperty(PRInt32* aErrorCode, const char* aName,
|
||||
@ -313,12 +324,15 @@ CSSParserImpl::~CSSParserImpl()
|
||||
NS_IF_RELEASE(mSheet);
|
||||
}
|
||||
|
||||
PRUint32 CSSParserImpl::GetInfoMask()
|
||||
NS_METHOD
|
||||
CSSParserImpl::GetInfoMask(PRUint32& aResult)
|
||||
{
|
||||
return NS_CSS_GETINFO_CSS1 | NS_CSS_GETINFO_CSSP;
|
||||
aResult = NS_CSS_GETINFO_CSS1 | NS_CSS_GETINFO_CSSP;
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
nsresult CSSParserImpl::SetStyleSheet(nsIStyleSheet* aSheet)
|
||||
NS_METHOD
|
||||
CSSParserImpl::SetStyleSheet(nsIStyleSheet* aSheet)
|
||||
{
|
||||
NS_PRECONDITION(nsnull != aSheet, "null ptr");
|
||||
if (nsnull == aSheet) {
|
||||
@ -340,14 +354,16 @@ nsresult CSSParserImpl::SetStyleSheet(nsIStyleSheet* aSheet)
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
nsIStyleSheet* CSSParserImpl::Parse(PRInt32* aErrorCode,
|
||||
nsIUnicharInputStream* aInput,
|
||||
nsIURL* aInputURL)
|
||||
NS_METHOD
|
||||
CSSParserImpl::Parse(nsIUnicharInputStream* aInput,
|
||||
nsIURL* aInputURL,
|
||||
nsIStyleSheet*& aResult)
|
||||
{
|
||||
if (nsnull == mSheet) {
|
||||
NS_NewCSSStyleSheet(&mSheet, aInputURL);
|
||||
}
|
||||
|
||||
PRInt32 errorCode = NS_OK;
|
||||
mScanner = new nsCSSScanner();
|
||||
mScanner->Init(aInput);
|
||||
mURL = aInputURL;
|
||||
@ -358,11 +374,11 @@ nsIStyleSheet* CSSParserImpl::Parse(PRInt32* aErrorCode,
|
||||
nsCSSToken* tk = &mToken;
|
||||
for (;;) {
|
||||
// Get next non-whitespace token
|
||||
if (!GetToken(aErrorCode, PR_TRUE)) {
|
||||
if (!GetToken(&errorCode, PR_TRUE)) {
|
||||
break;
|
||||
}
|
||||
if (eCSSToken_AtKeyword == tk->mType) {
|
||||
ParseAtRule(aErrorCode);
|
||||
ParseAtRule(&errorCode);
|
||||
continue;
|
||||
} else if (eCSSToken_Symbol == tk->mType) {
|
||||
// Discard dangling semicolons. This is not part of the CSS1
|
||||
@ -373,17 +389,64 @@ nsIStyleSheet* CSSParserImpl::Parse(PRInt32* aErrorCode,
|
||||
}
|
||||
mInHead = PR_FALSE;
|
||||
UngetToken();
|
||||
ParseRuleSet(aErrorCode);
|
||||
ParseRuleSet(&errorCode);
|
||||
}
|
||||
delete mScanner;
|
||||
mScanner = nsnull;
|
||||
NS_IF_RELEASE(mURL);
|
||||
|
||||
nsIStyleSheet* rv = nsnull;
|
||||
mSheet->QueryInterface(kIStyleSheetIID, (void**)&rv);
|
||||
nsIStyleSheet* sheet = nsnull;
|
||||
mSheet->QueryInterface(kIStyleSheetIID, (void**)&sheet);
|
||||
aResult = sheet;
|
||||
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
NS_METHOD
|
||||
CSSParserImpl::ParseDeclarations(const nsString& aDeclaration,
|
||||
nsIURL* aBaseURL,
|
||||
nsIStyleRule*& aResult)
|
||||
{
|
||||
nsString* str = new nsString(aDeclaration);
|
||||
if (nsnull == str) {
|
||||
return NS_ERROR_OUT_OF_MEMORY;
|
||||
}
|
||||
nsIUnicharInputStream* input = nsnull;
|
||||
nsresult rv = NS_NewStringUnicharInputStream(&input, str);
|
||||
if (NS_OK != rv) {
|
||||
return rv;
|
||||
}
|
||||
|
||||
mScanner = new nsCSSScanner();
|
||||
mScanner->Init(input);
|
||||
NS_RELEASE(input);
|
||||
|
||||
mURL = aBaseURL;
|
||||
NS_IF_ADDREF(mURL);
|
||||
|
||||
mInHead = PR_FALSE;
|
||||
PRInt32 errorCode = NS_OK;
|
||||
|
||||
nsICSSDeclaration* declaration = ParseDeclarationBlock(&errorCode, PR_FALSE);
|
||||
if (nsnull != declaration) {
|
||||
// Create a style rule for the delcaration
|
||||
nsICSSStyleRule* rule = nsnull;
|
||||
NS_NewCSSStyleRule(&rule, nsCSSSelector());
|
||||
rule->SetDeclaration(declaration);
|
||||
rule->SetWeight(0x7fffffff);
|
||||
aResult = rule;
|
||||
}
|
||||
else {
|
||||
aResult = nsnull;
|
||||
}
|
||||
|
||||
delete mScanner;
|
||||
mScanner = nsnull;
|
||||
NS_IF_RELEASE(mURL);
|
||||
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
//----------------------------------------------------------------------
|
||||
|
||||
PRBool CSSParserImpl::GetToken(PRInt32* aErrorCode, PRBool aSkipWS)
|
||||
@ -529,9 +592,10 @@ void CSSParserImpl::ProcessImport(const nsString& aURLSpec)
|
||||
|
||||
if (NS_OK == rv) {
|
||||
CSSParserImpl *parser = new CSSParserImpl();
|
||||
nsIStyleSheet* childSheet = parser->Parse(&ec, uin, url);
|
||||
nsIStyleSheet* childSheet;
|
||||
rv = parser->Parse(uin, url, childSheet);
|
||||
NS_RELEASE(parser);
|
||||
if (nsnull != childSheet) {
|
||||
if ((NS_OK == rv) && (nsnull != childSheet)) {
|
||||
nsICSSStyleSheet* cssChild = nsnull;
|
||||
if (NS_OK == childSheet->QueryInterface(kICSSStyleSheetIID, (void**)&cssChild)) {
|
||||
mSheet->AppendStyleSheet(cssChild);
|
||||
@ -569,22 +633,25 @@ void CSSParserImpl::SkipUntil(PRInt32* aErrorCode, PRUnichar aStopSymbol)
|
||||
}
|
||||
}
|
||||
|
||||
void CSSParserImpl::SkipDeclaration(PRInt32* aErrorCode)
|
||||
PRBool
|
||||
CSSParserImpl::SkipDeclaration(PRInt32* aErrorCode, PRBool aCheckForBraces)
|
||||
{
|
||||
nsCSSToken* tk = &mToken;
|
||||
for (;;) {
|
||||
if (!GetToken(aErrorCode, PR_TRUE)) {
|
||||
break;
|
||||
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) {
|
||||
@ -594,6 +661,7 @@ void CSSParserImpl::SkipDeclaration(PRInt32* aErrorCode)
|
||||
}
|
||||
}
|
||||
}
|
||||
return PR_TRUE;
|
||||
}
|
||||
|
||||
void CSSParserImpl::SkipRuleSet(PRInt32* aErrorCode)
|
||||
@ -631,7 +699,7 @@ PRBool CSSParserImpl::ParseRuleSet(PRInt32* aErrorCode)
|
||||
}
|
||||
|
||||
// Next parse the declaration block
|
||||
nsICSSDeclaration* declaration = ParseDeclarationBlock(aErrorCode);
|
||||
nsICSSDeclaration* declaration = ParseDeclarationBlock(aErrorCode, PR_TRUE);
|
||||
if (nsnull == declaration) {
|
||||
// XXX skip something here
|
||||
slist->Destroy();
|
||||
@ -880,23 +948,31 @@ PRBool CSSParserImpl::ParseSelector(PRInt32* aErrorCode,
|
||||
return PR_TRUE;
|
||||
}
|
||||
|
||||
nsICSSDeclaration* CSSParserImpl::ParseDeclarationBlock(PRInt32* aErrorCode)
|
||||
nsICSSDeclaration*
|
||||
CSSParserImpl::ParseDeclarationBlock(PRInt32* aErrorCode,
|
||||
PRBool aCheckForBraces)
|
||||
{
|
||||
if (aCheckForBraces) {
|
||||
if (!ExpectSymbol(aErrorCode, '{', PR_TRUE)) {
|
||||
return nsnull;
|
||||
}
|
||||
}
|
||||
nsICSSDeclaration* declaration = nsnull;
|
||||
if (NS_OK == NS_NewCSSDeclaration(&declaration)) {
|
||||
PRInt32 count = 0;
|
||||
for (;;) {
|
||||
if (ParseDeclaration(aErrorCode, declaration)) {
|
||||
if (ParseDeclaration(aErrorCode, declaration, aCheckForBraces)) {
|
||||
count++; // count declarations
|
||||
}
|
||||
else {
|
||||
SkipDeclaration(aErrorCode);
|
||||
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.
|
||||
}
|
||||
@ -988,7 +1064,8 @@ PRBool CSSParserImpl::ParseColorComponent(PRInt32* aErrorCode,
|
||||
|
||||
PRBool
|
||||
CSSParserImpl::ParseDeclaration(PRInt32* aErrorCode,
|
||||
nsICSSDeclaration* aDeclaration)
|
||||
nsICSSDeclaration* aDeclaration,
|
||||
PRBool aCheckForBraces)
|
||||
{
|
||||
// Get property name
|
||||
nsCSSToken* tk = &mToken;
|
||||
@ -1022,9 +1099,13 @@ CSSParserImpl::ParseDeclaration(PRInt32* aErrorCode,
|
||||
// See if the declaration is followed by a "!important" declaration
|
||||
PRBool isImportant = PR_FALSE;
|
||||
if (!GetToken(aErrorCode, PR_TRUE)) {
|
||||
// Premature eof is not ok
|
||||
if (aCheckForBraces) {
|
||||
// Premature eof is not ok when proper termination is mandated
|
||||
return PR_FALSE;
|
||||
}
|
||||
return PR_TRUE;
|
||||
}
|
||||
else {
|
||||
if (eCSSToken_Symbol == tk->mType) {
|
||||
if ('!' == tk->mSymbol) {
|
||||
// Look for important ident
|
||||
@ -1048,17 +1129,29 @@ CSSParserImpl::ParseDeclaration(PRInt32* aErrorCode,
|
||||
// Not a !important declaration
|
||||
UngetToken();
|
||||
}
|
||||
}
|
||||
// XXX do something with isImportant flag
|
||||
|
||||
// Make sure valid property declaration is terminated with either a
|
||||
// semicolon or a right-curly-brace.
|
||||
// semicolon or a right-curly-brace (when aCheckForBraces is true).
|
||||
// When aCheckForBraces is false, proper termination is either
|
||||
// semicolon or EOF.
|
||||
if (!GetToken(aErrorCode, PR_TRUE)) {
|
||||
if (aCheckForBraces) {
|
||||
// Premature eof is not ok
|
||||
return PR_FALSE;
|
||||
}
|
||||
return PR_TRUE;
|
||||
}
|
||||
if (eCSSToken_Symbol == tk->mType) {
|
||||
if (';' == tk->mSymbol) {
|
||||
return PR_TRUE;
|
||||
}
|
||||
if (!aCheckForBraces) {
|
||||
// If we didn't hit eof and we didn't see a semicolon then the
|
||||
// declaration is not properly terminated.
|
||||
return PR_FALSE;
|
||||
}
|
||||
if ('}' == tk->mSymbol) {
|
||||
UngetToken();
|
||||
return PR_TRUE;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user