public override Microsoft.VisualStudio.Package.AuthoringScope ParseSource(ParseRequest req)
{
Source source = (Source) this.GetSource(req.FileName);
bool yyparseResult = false;
#if GARRETT
System.IO.StreamWriter myStream = null;
if (req.View != null)
{
myStream = new System.IO.StreamWriter("E:/Users/Garrett/Documents/Projects/ShaderSense/myOutput.txt");
Console.SetError(myStream);
}
#endif
// req.DirtySpan seems to be set even though no changes have occurred
// source.IsDirty also behaves strangely
// might be possible to use source.ChangeCount to sync instead
if (req.DirtySpan.iStartIndex != req.DirtySpan.iEndIndex
|| req.DirtySpan.iStartLine != req.DirtySpan.iEndLine
|| source.IsDirty)
{
Babel.Parser.ErrorHandler handler = new Babel.Parser.ErrorHandler();
Babel.Lexer.Scanner scanner = new Babel.Lexer.Scanner(); // string interface
Parser.Parser parser = new Parser.Parser(); // use noarg constructor
parser.scanner = scanner;
scanner.Handler = handler;
parser.SetHandler(handler);
scanner.SetSource(req.Text, 0);
parser.MBWInit(req);
if (parser.shouldAddDeclarations()) Parser.Parser.clearDeclarations(); // Hack to purge old parser declarations
//Parser.Parser.PrepareParse(source.GetDocumentSpan(), source);
parser.PrepareParse(source.GetDocumentSpan(), source);
yyparseResult = parser.Parse();
((HLSLSource)source).GatherIncludes();
// store the parse results
// source.ParseResult = aast;
source.ParseResult = null;
source.Braces = parser.Braces;
// for the time being, just pull errors back from the error handler
if (handler.ErrNum > 0)
{
foreach (Babel.Parser.Error error in handler.SortedErrorList())
{
TextSpan span = new TextSpan();
span.iStartLine = span.iEndLine = error.line - 1;
span.iStartIndex = error.column;
span.iEndIndex = error.column + error.length;
req.Sink.AddError(req.FileName, error.message, span, Severity.Error);
}
}
}
switch (req.Reason)
{
case ParseReason.Check:
case ParseReason.HighlightBraces:
case ParseReason.MatchBraces:
case ParseReason.MemberSelectAndHighlightBraces:
// send matches to sink
// this should (probably?) be filtered on req.Line / col
if (source.Braces != null)
{
foreach (TextSpan[] brace in source.Braces)
{
if (brace.Length == 2)
req.Sink.MatchPair(brace[0], brace[1], 1);
else if (brace.Length >= 3)
req.Sink.MatchTriple(brace[0], brace[1], brace[2], 1);
}
}
break;
default:
break;
}
#if GARRETT
if(myStream != null)
myStream.Close();
#endif
// return new AuthoringScope(source.ParseResult);
return new HLSLAuthoringScope(source);
}
