internal nsresult ParseDeclarations(string aBuffer,
Uri aSheetURI,
Uri aBaseURI,
nsIPrincipal aSheetPrincipal,
Declaration aDeclaration,
ref bool aChanged)
{
aChanged = false;
if (aSheetPrincipal == null) throw new ArgumentException("Must have principal here!");
var scanner = new nsCSSScanner(aBuffer, 0);
var reporter = new ErrorReporter(scanner, mSheet, mChildLoader, aSheetURI);
InitScanner(scanner, reporter, aSheetURI, aBaseURI, aSheetPrincipal);
mSection = nsCSSSection.General;
mData.AssertInitialState();
aDeclaration.ClearData();
// We could check if it was already empty, but...
aChanged = true;
for (;;) {
// If we cleared the old decl, then we want to be calling
// ValueAppended as we parse.
if (!ParseDeclaration(aDeclaration, nsParseDeclaration.AllowImportant,
true, ref aChanged)) {
if (!SkipDeclaration(false)) {
break;
}
}
}
aDeclaration.CompressFrom(mData);
ReleaseScanner();
return nsresult.OK;
}
internal nsresult ParseProperty(nsCSSProperty aPropID,
string aPropValue,
Uri aSheetURI,
Uri aBaseURI,
nsIPrincipal aSheetPrincipal,
Declaration aDeclaration,
ref bool aChanged,
bool aIsImportant,
bool aIsSVGMode)
{
if (aSheetPrincipal == null) throw new ArgumentException("Must have principal here!");
if (aBaseURI == null) throw new ArgumentException("need base URI");
if (aDeclaration == null) throw new ArgumentException("Need declaration to parse into!");
mData.AssertInitialState();
mTempData.AssertInitialState();
aDeclaration.AssertMutable();
var scanner = new nsCSSScanner(aPropValue, 0);
var reporter = new ErrorReporter(scanner, mSheet, mChildLoader, aSheetURI);
InitScanner(scanner, reporter, aSheetURI, aBaseURI, aSheetPrincipal);
mSection = nsCSSSection.General;
scanner.SetSVGMode(aIsSVGMode);
aChanged = false;
// Check for unknown or preffed off properties
if (nsCSSProperty.Unknown == aPropID || !nsCSSProps.IsEnabled(aPropID)) {
string propName = nsCSSProps.GetStringValue(aPropID);
{ if (!mSuppressErrors) mReporter.ReportUnexpected("PEUnknownProperty", propName); };
{ if (!mSuppressErrors) mReporter.ReportUnexpected("PEDeclDropped"); };
mReporter.OutputError();
ReleaseScanner();
return nsresult.OK;
}
bool parsedOK = ParseProperty(aPropID);
// We should now be at EOF
if (parsedOK && GetToken(true)) {
{ if (!mSuppressErrors) mReporter.ReportUnexpected("PEExpectEndValue", mToken); };
parsedOK = false;
}
if (!parsedOK) {
string propName = nsCSSProps.GetStringValue(aPropID);
{ if (!mSuppressErrors) mReporter.ReportUnexpected("PEValueParsingError", propName); };
{ if (!mSuppressErrors) mReporter.ReportUnexpected("PEDeclDropped"); };
mReporter.OutputError();
mTempData.ClearProperty(aPropID);
} else {
// We know we don't need to force a ValueAppended call for the new
// value. So if we are not processing a shorthand, and there's
// already a value for this property in the declaration at the
// same importance level, then we can just copy our parsed value
// directly into the declaration without going through the whole
// expand/compress thing.
if (!aDeclaration.TryReplaceValue(aPropID, aIsImportant, mTempData, ref aChanged)) {
// Do it the slow way
aDeclaration.ExpandTo(mData);
aChanged = mData.TransferFromBlock(mTempData, aPropID, aIsImportant,
true, false, aDeclaration);
aDeclaration.CompressFrom(mData);
}
mReporter.ClearError();
}
mTempData.AssertInitialState();
ReleaseScanner();
return nsresult.OK;
}
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;
}
