public static IXamlAstValueNode Parse(IXamlLineInfo li, string ext,
Func <string, XamlAstXmlTypeReference> typeResolver)
{
var ctx = new MeScannerContext(typeResolver, li);
var scanner = new MeScanner(ctx, ext, li.Line, li.Position);
var currentTypeStack = new Stack <MeScannerTypeName>();
IXamlAstValueNode ReadExtension()
{
if (scanner.Token != MeTokenType.Open)
{
throw new MeScannerParseException("Unexpected token " + scanner.Token);
}
scanner.Read();
if (scanner.Token != MeTokenType.TypeName)
{
throw new MeScannerParseException("Unexpected token " + scanner.Token);
}
var extType = scanner.TokenType;
extType.TypeReference.IsMarkupExtension = true;
currentTypeStack.Push(ctx.CurrentType);
ctx.CurrentType = extType;
var rv = new XamlAstObjectNode(li, extType.TypeReference);
while (true)
{
scanner.Read();
if (scanner.Token == MeTokenType.Close)
{
break;
}
else if (scanner.Token == MeTokenType.PropertyName)
{
var prop = scanner.TokenProperty;
scanner.Read();
if (scanner.Token != MeTokenType.EqualSign)
{
throw new MeScannerParseException("Unexpected token " + scanner.Token);
}
var propValue = Read();
rv.Children.Add(new XamlAstXamlPropertyValueNode(li, prop, propValue));
}
else if (scanner.Token == MeTokenType.String || scanner.Token == MeTokenType.QuotedMarkupExtension ||
scanner.Token == MeTokenType.Open)
{
if (rv.Children.Count != 0)
{
throw new MeScannerParseException("Unexpected token after property list " + scanner.Token);
}
rv.Arguments.Add(ReadCurrent());
}
else if (scanner.Token == MeTokenType.Comma)
{
continue;
}
else
{
throw new MeScannerParseException("Unexpected token " + scanner.Token);
}
}
ctx.CurrentType = currentTypeStack.Pop();
return(rv);
}
IXamlAstValueNode Read()
{
scanner.Read();
return(ReadCurrent());
}
IXamlAstValueNode ReadCurrent()
{
if (scanner.Token == MeTokenType.String)
{
return(new XamlAstTextNode(li, scanner.TokenText, true));
}
if (scanner.Token == MeTokenType.Open)
{
return(ReadExtension());
}
if (scanner.Token == MeTokenType.QuotedMarkupExtension)
{
return(Parse(li, scanner.TokenText, typeResolver));
}
throw new MeScannerParseException("Unexpected token " + scanner.Token);
}
return(Read());
}
public MeScannerParseException(MeScanner meScanner, string error) : base(error)
{
}