public static GeneroParser CreateParser(Type t, TextReader reader, ParserOptions parserOptions, IProjectEntry projEntry = null, string filename = null)
{
if (reader == null)
{
throw new ArgumentNullException("reader");
}
if (t == null)
{
// Try to figure out the type from the projEntry or filename
if (projEntry != null && projEntry.FilePath != null)
{
t = EditorExtensions.Extensions.GetParserType(projEntry.FilePath);
}
if (t == null &&
filename != null)
{
t = EditorExtensions.Extensions.GetParserType(filename);
}
if (t == null)
{
throw new ArgumentNullException("t");
}
}
if (t != typeof(Genero4glParser) &&
t != typeof(GeneroPerParser))
{
throw new ArgumentException("Invalid type received", "t");
}
var options = parserOptions ?? ParserOptions.Default;
GeneroParser result = null;
Tokenizer tokenizer = new Tokenizer(options.ErrorSink,
(options.Verbatim ? TokenizerOptions.Verbatim : TokenizerOptions.None) | TokenizerOptions.GroupingRecovery,
(span, text) => options.RaiseProcessComment(result, new CommentEventArgs(span, text)));
tokenizer.Initialize(null, reader, SourceLocation.MinValue);
tokenizer.IndentationInconsistencySeverity = options.IndentationInconsistencySeverity;
if (t == typeof(Genero4glParser))
{
result = new Genero4glParser(tokenizer,
options.ErrorSink ?? ErrorSink.Null,
options.Verbatim,
options.BindReferences,
options
);
}
else if (t == typeof(GeneroPerParser))
{
result = new GeneroPerParser(tokenizer,
options.ErrorSink ?? ErrorSink.Null,
options.Verbatim,
options.BindReferences,
options
);
}
if (result != null)
{
result._projectEntry = projEntry;
result._filename = filename;
result._sourceReader = reader;
}
return(result);
}
public TokenizerErrorSink(GeneroParser parser)
{
_parser = parser;
}
public static bool TryParseNode(GeneroParser parser, out PreprocessorNode node)
{
node = null;
bool result = false;
if (parser.PeekToken(TokenKind.Ampersand))
{
var options = parser.Tokenizer.CurrentOptions; // backup the current parser options
var newOptions = options | TokenizerOptions.VerbatimCommentsAndLineJoins; // allow us to continue until the newline
parser.Tokenizer.AdjustOptions(newOptions);
parser.NextToken();
result = true;
node = new PreprocessorNode();
node.StartIndex = parser.Token.Span.Start;
StringBuilder sb = new StringBuilder();
switch (parser.PeekToken().Kind)
{
case TokenKind.IncludeKeyword:
parser.NextToken();
node.Type = PreprocessorType.Include;
StringExpressionNode strExpr;
if (StringExpressionNode.TryGetExpressionNode(parser, out strExpr))
{
node.IncludeFile = strExpr.LiteralValue;
}
else
{
parser.ReportSyntaxError("Invalid include file preprocessor directive found.");
}
break;
case TokenKind.DefineKeyword:
parser.NextToken();
node.Type = PreprocessorType.Define;
break;
case TokenKind.UndefKeyword:
parser.NextToken();
node.Type = PreprocessorType.Undef;
break;
case TokenKind.IfdefKeyword:
parser.NextToken();
node.Type = PreprocessorType.Ifdef;
break;
case TokenKind.ElseKeyword:
parser.NextToken();
node.Type = PreprocessorType.Else;
break;
case TokenKind.EndifKeyword:
parser.NextToken();
node.Type = PreprocessorType.Endif;
break;
default:
break;
}
while (!parser.PeekToken(TokenKind.NewLine) && !parser.PeekToken(TokenKind.EndOfFile))
{
node.PreprocessorTokens.Add(parser.NextToken());
}
parser.Tokenizer.AdjustOptions(options); // restore the backed up parser options
while (parser.PeekToken(TokenKind.NewLine))
{
parser.NextToken();
}
node.IsComplete = true;
}
return(result);
}
