private bool MatchNonGrammarTerminals()
{
TerminalList terms;
if (!Data.NonGrammarTerminalsLookup.TryGetValue(SourceStream.PreviewChar, out terms))
{
return(false);
}
foreach (var term in terms)
{
SourceStream.ResetPreviewPosition();
Context.CurrentToken = term.TryMatch(Context, SourceStream);
if (Context.CurrentToken != null)
{
term.InvokeValidateToken(Context);
}
if (Context.CurrentToken != null)
{
//check if we need to fire LineStart token before this token;
// we do it only if the token is not a comment; comments should be ignored by the outline logic
var token = Context.CurrentToken;
if (token.Category == TokenCategory.Content && NeedLineStartToken(token.Location))
{
Context.BufferedTokens.Push(token); //buffer current token; we'll eject LineStart instead
SourceStream.Location = token.Location; //set it back to the start of the token
Context.CurrentToken = SourceStream.CreateToken(Grammar.LineStartTerminal); //generate LineStart
Context.PreviousLineStart = SourceStream.Location; //update LineStart
}
return(true);
} //if
} //foreach term
SourceStream.ResetPreviewPosition();
return(false);
}
