public ClassificationParseResult(ITextSnapshot snapshot, Token tokens, Comment[] comments, Directive[] directives)
{
Snapshot = snapshot;
Tokens = tokens;
Comments = comments;
Directives = directives;
}
public static bool TryParse(ITextBuffer textBuffer, out ClassificationParseResult parseResult)
{
var snapshot = textBuffer.CurrentSnapshot;
ClassificationParseResult lastParseResult;
if (textBuffer.Properties.TryGetProperty(typeof(ClassificationParseResult), out lastParseResult) && lastParseResult.Snapshot.Version == snapshot.Version)
{
parseResult = lastParseResult;
return true;
}
NemerleSource source;
if (!textBuffer.Properties.TryGetProperty(typeof(NemerleSource), out source))
{
parseResult = null;
return false;
}
var engine = source.GetEngine();
if (!engine.RequestOnInitEngine())
{
parseResult = null;
return false;
}
var timer = Stopwatch.StartNew();
var code = snapshot.GetText();
var lexer = new HighlightingLexer(engine, code);
var preParser = new PreParser(lexer);
var tokens = preParser.ParseTopLevel();
var _comments = lexer.GetComments();
var directives = lexer.GetDirectives();
var comments = new Comment[_comments.Length];
for (var i = 0; i < _comments.Length; ++i)
{
var c = _comments[i];
var type = CommentType.Normal;
var pos = 0;
var commentParser = c.IsMultiline ? _multiLineCommentParser : _singleLineCommentParser;
var match = commentParser.Match(code, c.Position, c.Length);
if (match.Success)
{
if (match.Groups[1].Success)
{
pos = match.Groups[1].Index;
type = CommentType.ToDo;
}
else if (match.Groups[2].Success)
{
pos = match.Groups[2].Index;
type = CommentType.Bug;
}
else if (match.Groups[3].Success)
{
pos = match.Groups[3].Index;
type = CommentType.Hack;
}
}
comments[i] = new Comment(c, type, pos);
}
timer.Stop();
Debug.Print("SyntaxClassifier.TryParse: {0}", timer.Elapsed);
parseResult = new ClassificationParseResult(snapshot, tokens.Child, comments, directives);
textBuffer.Properties[typeof(ClassificationParseResult)] = parseResult;
return true;
}