/// <summary>
/// Initializes a new instance of the <see cref="LineScanner"/> class.
/// </summary>
public LuaScanner()
{
this.lex = new ParaEngine.Tools.Lua.Lexer.Scanner();
yylval = lex.yylval;
yylloc = lex.yylloc;
Reset();
}
/// <summary>
/// Initializes a new instance of the <see cref="LineScanner"/> class.
/// </summary>
public LineScanner()
{
this.lex = new ParaEngine.Tools.Lua.Lexer.Scanner();
}
public override AuthoringScope ParseSource(ParseRequest req)
{
PuppetSource source = (PuppetSource)this.GetSource(req.FileName);
bool yyparseResult = false;
// 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.Sink.Reason == ParseReason.Check || req.DirtySpan.iStartIndex != req.DirtySpan.iEndIndex ||
req.DirtySpan.iStartLine != req.DirtySpan.iEndLine)
{
Puppet.Parser.ErrorHandler handler = new Parser.ErrorHandler();
Puppet.Lexer.Scanner scanner = new Lexer.Scanner(); // string interface
Parser.Parser parser = new PuppetParser(); // use noarg constructor
parser.scanner = scanner;
scanner.Handler = handler;
parser.SetHandler(handler);
scanner.SetSource(req.Text, 0);
parser.MBWInit(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 (Parser.Error error in handler.SortedErrorList())
{
var 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:
int indexOfCaret = source.GetPositionOfLineIndex(req.Line, req.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;
case ParseReason.QuickInfo:
return(new PuppetAuthoringScope(this.GetSource(req.FileName)));
default:
break;
}
return(new PuppetAuthoringScope(source.ParseResult));
}
