public Lexer(ITokenTypes <TokenClassificationType> tokenTypes)
{
var comment = ParserComment.Select(value => tokenTypes.Comment);
var preprocessor = ParserPreprocessor.Select(value => tokenTypes.PreprocessorKeyword);
TokenClassificationType CheckGlslSpecifics(string word)
{
if (GlslSpecification.IsKeyword(word))
{
return(tokenTypes.Keyword);
}
if (GlslSpecification.IsFunction(word))
{
return(tokenTypes.Function);
}
if (GlslSpecification.IsVariable(word))
{
return(tokenTypes.Variable);
}
if (GlslSpecification.IsUserKeyWord(word))
{
return(tokenTypes.UserKeyWord);
}
return(tokenTypes.Identifier);
}
var number = ParserNumber.Select(value => tokenTypes.Number);
var identifier = ParserIdentifier.Select(value => CheckGlslSpecifics(value));
var op = ParserOperator.Select(value => tokenTypes.Operator);
var token = comment.Or(preprocessor).Or(number).Or(identifier).Or(op);
tokenParser = token.WithPosition().Token().XMany();
}
private static SnapshotPoint NonIdentifierPositionBefore(SnapshotPoint triggerPoint)
{
var line = triggerPoint.GetContainingLine();
SnapshotPoint start = triggerPoint;
while (start > line.Start && GlslSpecification.IsIdentifierChar((start - 1).GetChar()))
{
start -= 1;
}
return(start);
}
public int Exec(ref Guid pguidCmdGroup, uint nCmdID, uint nCmdexecopt, IntPtr pvaIn, IntPtr pvaOut)
{
bool handled = false;
int hresult = VSConstants.S_OK;
// 1. Pre-process
if (pguidCmdGroup == VSConstants.VSStd2K)
{
switch ((VSConstants.VSStd2KCmdID)nCmdID)
{
case VSConstants.VSStd2KCmdID.AUTOCOMPLETE:
case VSConstants.VSStd2KCmdID.COMPLETEWORD:
handled = StartSession();
break;
case VSConstants.VSStd2KCmdID.RETURN:
handled = Complete(false);
break;
case VSConstants.VSStd2KCmdID.TAB:
handled = Complete(true);
break;
case VSConstants.VSStd2KCmdID.CANCEL:
handled = Cancel();
break;
case VSConstants.VSStd2KCmdID.COMMENTBLOCK:
case VSConstants.VSStd2KCmdID.COMMENT_BLOCK:
Comment(TextView);
handled = true;
break;
case VSConstants.VSStd2KCmdID.UNCOMMENTBLOCK:
case VSConstants.VSStd2KCmdID.UNCOMMENT_BLOCK:
UnComment(TextView);
handled = true;
break;
}
}
ThreadHelper.ThrowIfNotOnUIThread();
if (!handled)
{
hresult = Next.Exec(pguidCmdGroup, nCmdID, nCmdexecopt, pvaIn, pvaOut);
}
if (ErrorHandler.Succeeded(hresult))
{
if (pguidCmdGroup == VSConstants.VSStd2K)
{
switch ((VSConstants.VSStd2KCmdID)nCmdID)
{
case VSConstants.VSStd2KCmdID.TYPECHAR:
var c = GetTypeChar(pvaIn);
if (!GlslSpecification.IsIdentifierChar(c))
{
Cancel();
}
else if (_currentSession != null)
{
Filter();
}
else if (GlslSpecification.IsIdentifierStartChar(c))
{
StartSession();
}
break;
case VSConstants.VSStd2KCmdID.BACKSPACE:
Filter();
break;
}
}
}
return(hresult);
}