private void ParseLiteralElementOpeningTag(LiteralElement element, out bool expectClosingTag, ref SourceContext context){
SourceContext ctx = this.scanner.CurrentSourceContext;
Identifier tag = element.Name = this.ParsePrefixedIdentifier();
if (tag.Prefix != null) {
ctx = tag.Prefix.SourceContext;
ctx.EndPos = this.scanner.endPos;
}
element.Type = new TypeExpression(element.Name);
if (this.sink != null)
this.sink.QualifyName(element.SourceContext, tag);
while (Parser.IdentifierOrNonReservedKeyword[this.currentToken]){
element.AttributeNames.Add(this.ParsePrefixedIdentifier());
this.Skip(Token.Assign);
switch(this.currentToken){
case Token.IntegerLiteral:
element.AttributeValues.Add(this.ParseIntegerLiteral());
break;
default:
element.AttributeValues.Add(this.scanner.GetStringLiteral());
this.Skip(Token.StringLiteral);
break;
}
}
this.scanner.state = ScannerState.XML;
element.SourceContext.EndPos = this.scanner.endPos;
if (this.currentToken == Token.EndOfSimpleTag)
expectClosingTag = false;
else{
if (this.currentToken == Token.EndOfTag){
this.GetNextToken();
context = this.scanner.CurrentSourceContext;
}else{
this.HandleError(Error.SyntaxError, ">");
context = this.scanner.CurrentSourceContext;
}
expectClosingTag = true;
}
}
private LiteralElement ParseLiteralElement(Identifier parentTagName, TokenSet followers, out bool parentMustExpectClosingTag){
Debug.Assert(this.currentToken == Token.StartOfTag);
parentMustExpectClosingTag = true;
this.scanner.state = ScannerState.Tag;
LiteralElement result = new LiteralElement();
result.SourceContext = this.scanner.CurrentSourceContext;
this.GetNextToken();
bool expectClosingTag;
SourceContext sctx = this.scanner.CurrentSourceContext;
ScannerState ss = this.scanner.state;
this.ParseLiteralElementOpeningTag(result, out expectClosingTag, ref sctx);
if (expectClosingTag){
Token tokenFollowingOpeningTag = this.currentToken;
for(;;){
switch(this.currentToken){
case Token.LiteralContentString:
case Token.LiteralComment:
case Token.CharacterData:
result.Contents.Add(this.scanner.GetStringLiteral());
result.ContentsType.Add((int)this.currentToken);
if (this.scanner.state != ScannerState.Code)
this.scanner.state = ScannerState.XML;
this.GetNextToken();
break;
case Token.ProcessingInstructions:
result.Contents.Add(new Literal(this.scanner.CurrentSourceContext.SourceText));
result.ContentsType.Add((int)this.currentToken);
this.scanner.state = ScannerState.XML;
this.GetNextToken();
break;
case Token.StartOfTag:
bool nestedElementDidNotEndWithMyTag = true;
LiteralElement xelem = this.ParseLiteralElement(result.Name, followers, out nestedElementDidNotEndWithMyTag);
xelem.ParentLiteral = result;
result.Contents.Add(xelem);
result.ContentsType.Add((int)Token.StartOfTag);
if (!nestedElementDidNotEndWithMyTag){
result.SourceContext.EndPos = xelem.SourceContext.EndPos;
if (parentTagName == Identifier.Empty)
this.scanner.state = ScannerState.Code;
this.GetNextToken();
return result;
}else if (this.currentToken == Token.EndOfFile && xelem.Name == Identifier.Empty)
return result;
break;
default:
goto checkForClosingTag;
}
}
checkForClosingTag:
if (this.currentToken != Token.StartOfClosingTag){
this.scanner.state = ScannerState.Code;
Identifier tagId = result.Name;
if (tokenFollowingOpeningTag == Token.LiteralContentString && parentTagName == Identifier.Empty
&& sctx.SourceText.Trim().Length != 0){
this.scanner.endPos = sctx.StartPos;
this.scanner.state = ss;
this.currentToken = Token.None;
this.GetNextToken();
this.scanner.state = ScannerState.Code;
Debug.Assert(this.currentToken != Token.ObjectLiteralStart);
result = null;
}
if (tagId != null)
this.HandleError(Error.SyntaxError, "</"+tagId.ToString()+">");
else
this.HandleError(Error.SyntaxError, "<");
this.SkipTo(followers, Error.None);
return result;
}
this.scanner.state = ScannerState.Tag;
this.Skip(Token.StartOfClosingTag);
Identifier closingId = this.ParsePrefixedIdentifier();
if (parentTagName == Identifier.Empty)
this.scanner.state = ScannerState.Code;
else
this.scanner.state = ScannerState.XML;
Identifier openingId = result.Name;
bool matchesStartId = closingId.UniqueIdKey == openingId.UniqueIdKey &&
!(closingId.Prefix != null && (openingId.Prefix == null || closingId.Prefix.UniqueIdKey != openingId.Prefix.UniqueIdKey));
if (matchesStartId)
this.Skip(Token.EndOfTag);
else{
bool matchesParentId = closingId.UniqueIdKey == parentTagName.UniqueIdKey &&
!(closingId.Prefix != null && (parentTagName.Prefix == null || closingId.Prefix.UniqueIdKey != parentTagName.Prefix.UniqueIdKey));
if (matchesParentId){
parentMustExpectClosingTag = false;
this.HandleError(closingId.SourceContext, Error.ClosingTagMismatch, result.Name.ToString());
}else{
this.Skip(Token.EndOfTag);
this.HandleError(closingId.SourceContext, Error.ClosingTagMismatch, result.Name.ToString());
}
}
}else{
if (parentTagName == Identifier.Empty)
this.scanner.state = ScannerState.Code;
if (this.currentToken == Token.EndOfSimpleTag)
this.GetNextToken();
}
return result;
}
private LiteralElement ParseObjectLiteral(TokenSet followers){
Token tok = this.currentToken;
Debug.Assert(tok == Token.ObjectLiteralStart || tok == Token.MultiLineDocCommentStart || tok == Token.SingleLineDocCommentStart);
Debug.Assert(this.scanner.state == ScannerState.XML);
this.GetNextToken();
if (this.currentToken != Token.StartOfTag){
this.SkipTo(followers|Token.StartOfTag);
if (this.currentToken != Token.StartOfTag) return null;
}
bool junk;
LiteralElement result = this.ParseLiteralElement(Identifier.Empty, followers, out junk);
if (result == null){
while (this.currentToken == Token.SingleLineDocCommentStart) this.GetNextToken();
return result; // error handling.
}
if (tok == Token.MultiLineDocCommentStart || tok == Token.SingleLineDocCommentStart ||
this.currentToken == Token.LessThan){
LiteralElement element = result;
result = new LiteralElement();
result.SourceContext = element.SourceContext;
result.Contents.Add(element);
result.ContentsType.Add((int)Token.StartOfTag);
for(;;){
switch(this.currentToken){
case Token.Multiply:
this.GetNextToken();
continue;
case Token.ObjectLiteralStart:
case Token.SingleLineDocCommentStart:
this.GetNextToken();
goto case Token.LessThan;
case Token.LessThan:
this.currentToken = Token.StartOfTag;
LiteralElement xelem = this.ParseLiteralElement(Identifier.Empty, followers, out junk);
result.Contents.Add(xelem);
result.ContentsType.Add((int)Token.StartOfTag);
break;
default:
goto done;
}
}
}
done:
this.SkipTo(followers);
return result;
}
private XmlElement GetXmlElement(LiteralElement lit){
try {
XmlElement result = null;
result = this.module.Documentation.CreateElement(lit.Name.Name);
IdentifierList attrNames = lit.AttributeNames;
ExpressionList attrValues = lit.AttributeValues;
for (int i = 0, n = attrNames == null ? 0 : attrNames.Count; i < n; i++){
Identifier attrName = attrNames[i]; if (attrName == null) continue;
Expression attrValue = attrValues[i]; if (attrValue == null) continue;
XmlAttribute attr = result.SetAttributeNode(attrName.Name, null);
Literal attrLit = attrValue as Literal;
if (attrLit != null && attrLit.Value is string)
attr.Value = (string)attrLit.Value;
else
attr.Value = attrValue.SourceContext.SourceText;
}
ExpressionList contents = lit.Contents;
Int32List contentsType = lit.ContentsType;
for (int i = 0, n = contents == null ? 0 : contents.Count; i < n; i++){
Expression content = contents[i]; if (content == null) continue;
switch ((Token)contentsType[i]){
case Token.StartOfTag:
XmlElement childElement = this.GetXmlElement((LiteralElement)content);
if (childElement == null) continue;
result.AppendChild(childElement);
break;
case Token.LiteralContentString:
result.AppendChild(result.OwnerDocument.CreateTextNode((string)((Literal)content).Value));
break;
case Token.CharacterData:
result.AppendChild(result.OwnerDocument.CreateCDataSection((string)((Literal)content).Value));
break;
case Token.LiteralComment:
result.AppendChild(result.OwnerDocument.CreateComment((string)((Literal)content).Value));
break;
case Token.ProcessingInstructions:
string piTagAndBody = (string)((Literal)content).Value;
int len = piTagAndBody == null ? 0 : piTagAndBody.Length;
int firstBlank = piTagAndBody.IndexOf(' ');
if (firstBlank > 2 && firstBlank < len-3)
result.AppendChild(result.OwnerDocument.CreateProcessingInstruction(
piTagAndBody.Substring(2, firstBlank-2), piTagAndBody.Substring(firstBlank+1,len-3-firstBlank)));
break;
}
}
return result;
} catch (Exception e) {
this.HandleError(lit.SourceContext, Error.InternalCompilerError, e.Message);
return null;
}
}
public ValidationState CheckElement(LiteralElement xElem) {
if (this.validator != null) {
validator.ValidateElement(xElem.Name, context);
}
return context;
}
public void Start(LiteralElement element) {
this.element = element;
context.Name = element.Name;
}
