internal Declaration ParseDeclarationBlock(nsParseDeclaration aFlags, nsCSSContextType aContext = nsCSSContextType.General)
{
bool checkForBraces = (aFlags & nsParseDeclaration.InBraces) != 0;
if (checkForBraces) {
if (!ExpectSymbol('{', true)) {
{ if (!mSuppressErrors) mReporter.ReportUnexpected("PEBadDeclBlockStart", mToken); };
mReporter.OutputError();
return null;
}
}
Declaration declaration = new Declaration();
mData.AssertInitialState();
if (declaration != null) {
for (;;) {
bool changed = false;
if (!ParseDeclaration(declaration, aFlags, true, ref changed, aContext)) {
if (!SkipDeclaration(checkForBraces)) {
break;
}
if (checkForBraces) {
if (ExpectSymbol('}', true)) {
break;
}
}
// Since the skipped declaration didn't end the block we parse
// the next declaration.
}
}
declaration.CompressFrom(mData);
}
return declaration;
}
//----------------------------------------------------------------------
internal bool ParseDeclaration(Declaration aDeclaration,
nsParseDeclaration aFlags,
bool aMustCallValueAppended,
ref bool aChanged,
nsCSSContextType aContext = nsCSSContextType.General)
{
if (!(aContext == nsCSSContextType.General ||
aContext == nsCSSContextType.Page)) throw new ArgumentException("Must be page or general context");
bool checkForBraces = (aFlags & nsParseDeclaration.InBraces) != 0;
mTempData.AssertInitialState();
// Get property name
nsCSSToken tk = mToken;
string propertyName;
for (;;) {
if (!GetToken(true)) {
if (checkForBraces) {
{ if (!mSuppressErrors) mReporter.ReportUnexpected("PEDeclEndEOF"); };
}
return false;
}
if (nsCSSTokenType.Ident == tk.mType) {
propertyName = tk.mIdentStr;
// grab the ident before the ExpectSymbol trashes the token
if (!ExpectSymbol(':', true)) {
{ if (!mSuppressErrors) mReporter.ReportUnexpected("PEParseDeclarationNoColon", mToken); };
{ if (!mSuppressErrors) mReporter.ReportUnexpected("PEDeclDropped"); };
mReporter.OutputError();
return false;
}
break;
}
if (tk.IsSymbol(';')) {
// dangling semicolons are skipped
continue;
}
if (!tk.IsSymbol('}')) {
{ if (!mSuppressErrors) mReporter.ReportUnexpected("PEParseDeclarationDeclExpected", mToken); };
{ if (!mSuppressErrors) mReporter.ReportUnexpected("PEDeclSkipped"); };
mReporter.OutputError();
}
// Not a declaration...
UngetToken();
return false;
}
// Don't report property parse errors if we're inside a failing @supports
// rule.
using (/*var suppressErrors = */new nsAutoSuppressErrors(this, mInFailingSupportsRule)) {
// Map property name to its ID and then parse the property
nsCSSProperty propID = nsCSSProps.LookupProperty(propertyName,
nsCSSProps.EnabledState.Enabled);
if (nsCSSProperty.Unknown == propID ||
(aContext == nsCSSContextType.Page &&
!nsCSSProps.PropHasFlags(propID, nsCSSProps.APPLIES_TO_PAGE_RULE))) { // unknown property
if (!NonMozillaVendorIdentifier(propertyName)) {
{ if (!mSuppressErrors) mReporter.ReportUnexpected("PEUnknownProperty", propertyName); };
{ if (!mSuppressErrors) mReporter.ReportUnexpected("PEDeclDropped"); };
mReporter.OutputError();
}
return false;
}
if (! ParseProperty(propID)) {
// XXX Much better to put stuff in the value parsers instead...
{ if (!mSuppressErrors) mReporter.ReportUnexpected("PEValueParsingError", propertyName); };
{ if (!mSuppressErrors) mReporter.ReportUnexpected("PEDeclDropped"); };
mReporter.OutputError();
mTempData.ClearProperty(propID);
mTempData.AssertInitialState();
return false;
}
mReporter.ClearError();
// Look for "!important".
PriorityParsingStatus status;
if ((aFlags & nsParseDeclaration.AllowImportant) != 0) {
status = ParsePriority();
}
else {
status = PriorityParsingStatus.None;
}
// Look for a semicolon or close brace.
if (status != PriorityParsingStatus.Error) {
if (!GetToken(true)) {
// EOF is always ok
} else if (mToken.IsSymbol(';')) {
// semicolon is always ok
} else if (mToken.IsSymbol('}')) {
// brace is ok if checkForBraces, but don't eat it
UngetToken();
if (!checkForBraces) {
status = PriorityParsingStatus.Error;
}
} else {
UngetToken();
status = PriorityParsingStatus.Error;
}
}
if (status == PriorityParsingStatus.Error) {
if (checkForBraces) {
{ if (!mSuppressErrors) mReporter.ReportUnexpected("PEBadDeclOrRuleEnd2", mToken); };
} else {
{ if (!mSuppressErrors) mReporter.ReportUnexpected("PEBadDeclEnd", mToken); };
}
{ if (!mSuppressErrors) mReporter.ReportUnexpected("PEDeclDropped"); };
mReporter.OutputError();
mTempData.ClearProperty(propID);
mTempData.AssertInitialState();
return false;
}
aChanged |= mData.TransferFromBlock(mTempData, propID,
status == PriorityParsingStatus.Important,
false, aMustCallValueAppended,
aDeclaration);
return true;
}
}
