internal static IEnumerable<CssSelectorGroup> TraverseList(CssSelectorGroup @this)
{
return @this.TraverseList(i => i.mNext);
}
internal CssStyleRule(CssSelectorGroup aSelector, CssDeclaration aDeclaration)
{
mSelector = aSelector;
mDeclaration = aDeclaration;
}
internal void AddPseudoClass(CssPseudoClass aType, CssSelectorGroup aSelectorList)
{
AddPseudoClassInternal(new CssPseudoClassSelector(aType, aSelectorList));
}
internal CssPseudoClassSelector(CssPseudoClass aType, CssSelectorGroup aSelectors)
{
mType = aType;
mSelectors = aSelectors;
}
internal bool ParseSelectorList(ref nsCSSSelectorList aListHead,
char aStopChar)
{
nsCSSSelectorList list = null;
if (! ParseSelectorGroup(ref list)) {
// must have at least one selector group
aListHead = null;
return false;
}
Debug.Assert(null != list, "no selector list");
aListHead = list;
// After that there must either be a "," or a "{" (the latter if
// StopChar is nonzero)
nsCSSToken tk = mToken;
for (;;) {
if (! GetToken(true)) {
if (aStopChar == '\0') {
return true;
}
{ if (!mSuppressErrors) mReporter.ReportUnexpected("PESelectorListExtraEOF"); };
break;
}
if (nsCSSTokenType.Symbol == tk.mType) {
if (',' == tk.mSymbol) {
nsCSSSelectorList newList = null;
// Another selector group must follow
if (! ParseSelectorGroup(ref newList)) {
break;
}
// add new list to the end of the selector list
list.mNext = newList;
list = newList;
continue;
} else if (aStopChar == tk.mSymbol && aStopChar != '\0') {
UngetToken();
return true;
}
}
{ if (!mSuppressErrors) mReporter.ReportUnexpected("PESelectorListExtra", mToken); };
UngetToken();
break;
}
aListHead = null;
return false;
}
internal nsresult ParseSelectorString(string aSelectorString,
Uri aURI, // for error reporting
uint32_t aLineNumber, // for error reporting
ref nsCSSSelectorList aSelectorList)
{
var scanner = new nsCSSScanner(aSelectorString, aLineNumber);
var reporter = new ErrorReporter(scanner, mSheet, mChildLoader, aURI);
InitScanner(scanner, reporter, aURI, aURI, null);
bool success = ParseSelectorList(ref aSelectorList, '\0');
// We deliberately do not call OUTPUT_ERROR here, because all our
// callers map a failure return to a JS exception, and if that JS
// exception is caught, people don't want to see parser diagnostics;
// see e.g. http://bugs.jquery.com/ticket/7535
// It would be nice to be able to save the parser diagnostics into
// the exception, so that if it _isn't_ caught we can report them
// along with the usual uncaught-exception message, but we don't
// have any way to do that at present; see bug 631621.
mReporter.ClearError();
ReleaseScanner();
if (success) {
Debug.Assert(aSelectorList != null, "Should have list!");
return nsresult.OK;
}
Debug.Assert(aSelectorList == null, "Shouldn't have list!");
return nsresult.ERROR_DOM_SYNTAX_ERR;
}
/**
* This is the format for selectors:
* operator? [[namespace |]? element_name]? [ ID | class | attrib | pseudo ]*
*/
internal bool ParseSelector(nsCSSSelectorList aList,
char aPrevCombinator)
{
if (! GetToken(true)) {
{ if (!mSuppressErrors) mReporter.ReportUnexpected("PESelectorEOF"); };
return false;
}
nsCSSSelector selector = aList.AddSelector(aPrevCombinator);
string pseudoElement = null;
nsAtomList pseudoElementArgs = null;
nsCSSPseudoElement pseudoElementType =
nsCSSPseudoElement.NotPseudoElement;
int32_t dataMask = 0;
nsSelectorParsingStatus parsingStatus =
ParseTypeOrUniversalSelector(ref dataMask, selector, false);
while (parsingStatus == nsSelectorParsingStatus.Continue) {
if (nsCSSTokenType.ID == mToken.mType) { // #id
parsingStatus = ParseIDSelector(ref dataMask, selector);
}
else if (mToken.IsSymbol('.')) { // .class
parsingStatus = ParseClassSelector(ref dataMask, selector);
}
else if (mToken.IsSymbol(':')) { // :pseudo
parsingStatus = ParsePseudoSelector(ref dataMask, selector, false,
ref pseudoElement,
pseudoElementArgs,
ref pseudoElementType);
}
else if (mToken.IsSymbol('[')) { // [attribute
parsingStatus = ParseAttributeSelector(ref dataMask, selector);
if (nsSelectorParsingStatus.Error == parsingStatus) {
SkipUntil(']');
}
}
else { // not a selector token, we're done
parsingStatus = nsSelectorParsingStatus.Done;
UngetToken();
break;
}
if (parsingStatus != nsSelectorParsingStatus.Continue) {
break;
}
if (! GetToken(false)) { // premature eof is ok (here!)
parsingStatus = nsSelectorParsingStatus.Done;
break;
}
}
if (parsingStatus == nsSelectorParsingStatus.Error) {
return false;
}
if (dataMask == 0) {
if (selector.mNext != null) {
{ if (!mSuppressErrors) mReporter.ReportUnexpected("PESelectorGroupExtraCombinator"); };
} else {
{ if (!mSuppressErrors) mReporter.ReportUnexpected("PESelectorGroupNoSelector"); };
}
return false;
}
if (pseudoElementType == nsCSSPseudoElement.AnonBox) {
// We got an anonymous box pseudo-element; it must be the only
// thing in this selector group.
if (selector.mNext != null || !IsUniversalSelector(selector)) {
{ if (!mSuppressErrors) mReporter.ReportUnexpected("PEAnonBoxNotAlone"); };
return false;
}
// Rewrite the current selector as this pseudo-element.
// It does not contribute to selector weight.
{ var t = selector.mLowercaseTag; selector.mLowercaseTag = pseudoElement; pseudoElement = t; };
selector.mClassList = pseudoElementArgs;
selector.SetPseudoType(pseudoElementType);
return true;
}
aList.mWeight += selector.CalcWeight();
// Pseudo-elements other than anonymous boxes are represented as
// direct children ('>' combinator) of the rest of the selector.
if (pseudoElement != null) {
selector = aList.AddSelector('>');
{ var t = selector.mLowercaseTag; selector.mLowercaseTag = pseudoElement; pseudoElement = t; };
selector.mClassList = pseudoElementArgs;
selector.SetPseudoType(pseudoElementType);
}
return true;
}
internal bool ParseSelectorGroup(ref nsCSSSelectorList aList)
{
char combinator = '\0';
var list = new nsCSSSelectorList();
for (;;) {
if (!ParseSelector(list, combinator)) {
return false;
}
// Look for a combinator.
if (!GetToken(false)) {
break; // EOF ok here
}
combinator = '\0';
if (mToken.mType == nsCSSTokenType.Whitespace) {
if (!GetToken(true)) {
break; // EOF ok here
}
combinator = ' ';
}
if (mToken.mType != nsCSSTokenType.Symbol) {
UngetToken(); // not a combinator
} else {
char symbol = mToken.mSymbol;
if (symbol == '+' || symbol == '>' || symbol == '~') {
combinator = mToken.mSymbol;
} else {
UngetToken(); // not a combinator
if (symbol == ',' || symbol == '{' || symbol == ')') {
break; // end of selector group
}
}
}
if (combinator == 0) {
{ if (!mSuppressErrors) mReporter.ReportUnexpected("PESelectorListExtra", mToken); };
return false;
}
}
aList = list;
return true;
}
//
// Parse the argument of a pseudo-class that has a selector list argument.
// Such selector lists cannot contain combinators, but can contain
// anything that goes between a pair of combinators.
//
internal nsSelectorParsingStatus ParsePseudoClassWithSelectorListArg(nsCSSSelector aSelector,
nsCSSPseudoClass aType)
{
var slist = new nsCSSSelectorList();
if (! ParseSelectorList(ref slist, ')')) {
return nsSelectorParsingStatus.Error; // our caller calls SkipUntil(')')
}
// Check that none of the selectors in the list have combinators or
// pseudo-elements.
for (nsCSSSelectorList l = slist; l != null; l = l.mNext) {
nsCSSSelector s = l.mSelectors;
if (s.mNext != null || s.IsPseudoElement()) {
return nsSelectorParsingStatus.Error; // our caller calls SkipUntil(')')
}
}
// Add the pseudo with the selector list parameter
aSelector.AddPseudoClass(aType, slist);
// close the parenthesis
if (!ExpectSymbol(')', true)) {
{ if (!mSuppressErrors) mReporter.ReportUnexpected("PEPseudoClassNoClose", mToken); };
return nsSelectorParsingStatus.Error; // our caller calls SkipUntil(')')
}
return nsSelectorParsingStatus.Continue;
}
internal static IEnumerable <CssSelectorGroup> TraverseList(CssSelectorGroup @this)
{
return(@this.TraverseList(i => i.mNext));
}
internal CssPseudoClassSelector(CssPseudoClass aType, CssSelectorGroup aSelectors)
{
mType = aType;
mSelectors = aSelectors;
}
internal void AddPseudoClass(CssPseudoClass aType, CssSelectorGroup aSelectorList)
{
AddPseudoClassInternal(new CssPseudoClassSelector(aType, aSelectorList));
}
internal CssStyleRule(CssSelectorGroup aSelector, CssDeclaration aDeclaration)
{
mSelector = aSelector;
mDeclaration = aDeclaration;
}