public override AuthoringScope ParseSource(ParseRequest req)
{
Source source = (Source)this.GetSource(req.FileName);
//source.LastParseTime = 0;
bool yyparseResult = false;
Parser.Parser parser = new Parser.Parser(); // use noarg constructor
//redirect
//using (var stream = File.AppendText("C:\\temp\\out.txt"))
//{
// Console.SetOut(stream);
// Console.SetError(stream);
// 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)
{
Debug.Assert(handler != null);
handler.Clear();
Babel.Lexer.Scanner scanner = new Babel.Lexer.Scanner(); // string interface
handler.SetFileName(req.FileName);
scanner.Handler = handler;
SymbolTable symbolTable = BlenXLibraryManager.SymbolTable;
parser.SetParsingInfo(req.FileName, symbolTable, handler);
parser.scanner = scanner;
scanner.SetSource(req.Text, 0);
parser.SetContext(req);
yyparseResult = parser.Parse();
// 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)
{
//if (req.Sink.HiddenRegions == true)
{
string first = source.GetText(brace[0]);
if (source.GetText(brace[0]).Contains("[") && source.GetText(brace[1]).Contains("]"))
{
//construct a TextSpan of everything between the braces
TextSpan hideSpan = new TextSpan();
hideSpan.iStartIndex = brace[0].iStartIndex;
hideSpan.iStartLine = brace[0].iStartLine;
hideSpan.iEndIndex = brace[1].iEndIndex;
hideSpan.iEndLine = brace[1].iEndLine;
req.Sink.ProcessHiddenRegions = true;
req.Sink.AddHiddenRegion(hideSpan);
}
}
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;
}
return new BlenXAuthoringScope(parser, source);
}
