//TODO: XmlDecl
//TODO: XmlDeclVersionInfo
//TODO: XmlDeclEncodingDecl
//TODO: XmlDeclSDDecl
//TODO: XmlProcessingInstruction
//TODO: XmlDocTypeDecl
private List<AstNode> ParseXmlContent()
{
// XmlContent -> { XmlElement | xmlText }.
List<AstNode> content = new List<AstNode>();
while (CurrentTokenIn(TokenType.XmlTagStart, TokenType.XmlText))
{
if (CurrentTokenType == TokenType.XmlTagStart)
{
Token token = _scanner.PeekToken(1);
//TODO: does this need to be here because it stops the parsing of "<"
// // If no token follows then return the content list
// if (token == null)
// {
// return content;
// }
if (token != null && token.Type == TokenType.XmlForwardSlash)
{
// The '<' starts a end tag so exit the loop of the parent element body
// Return nodes created and do not process the closing tag
return content;
}
// Parse this element
content.Add(ParseXmlElement());
}
else if (CurrentTokenType == TokenType.XmlText)
{
XmlTextNode xmlTextNode = new XmlTextNode(_scanner.CurrentToken.Image);
xmlTextNode.Position = GetCurrentTokenPosition();
content.Add(xmlTextNode);
_scanner.GetToken();
}
//TODO write some comments
if (content.Count == 0 || (content.Count == 0 && _scanner.EOF))
{
AddError("The parser has been pre-emptively terminated because it appears " +
"as if the parser is stuck. [In ParseXmlContent()]");
break;
}
}
return content;
}
private XmlAttribute ParseXmlAttribute()
{
// XmlAttribute -> XmlName "=" ( "\"" { xmlAttributeText | NVStatement } "\""
// | "'" { xmlAttributeText | NVStatement } "'" ).
XmlAttribute xmlAttribute;
//TODO: ParseXmlName instead of matching an XmlAttributeName
if (CurrentTokenType == TokenType.XmlAttributeName)
{
xmlAttribute = new XmlAttribute(_scanner.CurrentToken.Image);
_scanner.GetToken();
}
else
{
AddError("Expected attribute name");
return null;
}
MatchToken(TokenType.XmlEquals);
bool doubleQuotes;
if (_scanner.CurrentToken != null && _scanner.CurrentToken.Type == TokenType.XmlDoubleQuote)
{
_scanner.GetToken();
doubleQuotes = true;
}
else if (_scanner.CurrentToken != null && _scanner.CurrentToken.Type == TokenType.XmlSingleQuote)
{
_scanner.GetToken();
doubleQuotes = false;
}
else
{
AddError("Expected quotes around attribute value.");
return null;
}
while ((CurrentTokenType != TokenType.XmlDoubleQuote && doubleQuotes) ||
(CurrentTokenType != TokenType.XmlSingleQuote && !doubleQuotes))
{
AstNode astNode;
if (CurrentTokenType == TokenType.XmlAttributeText)
{
astNode = new XmlTextNode(_scanner.CurrentToken.Image);
_scanner.GetToken();
}
else if (CurrentTokenIn(TokenType.NVDirectiveHash, TokenType.NVDollar))
{
astNode = ParseNVStatement();
}
else
{
AddError("Expected XML attribute value or NVelocity statement.");
break;
}
xmlAttribute.Content.Add(astNode);
}
//TODO: else if(CurrentTokenType == TokenType.XmlSingleQuote)
if (doubleQuotes)
{
MatchToken(TokenType.XmlDoubleQuote);
}
else
{
MatchToken(TokenType.XmlSingleQuote);
}
return xmlAttribute;
}