Richard, Note that I am a C# illiterate, but, isn't the C# literal:
@"""" only just a single quote? If so, then it is no wonder you're getting errors. Parsing: WhitespaceInSymbolsLexer lexer = new WhitespaceInSymbolsLexer(new ANTLRStringStream("\"")); will also produce the error 'line 1:1 mismatched character '<EOF>' expecting '"'' with me (of course) since a single quote is no valid token. Regards, Bart. On Wed, Jul 27, 2011 at 11:14 PM, G. Richard Bellamy <rbell...@pteradigm.com > wrote: > Bart, > > When I escape the quotes things work on my end as well - you'll note > that I'm passing a set of non-escaped quotes... (C# Verbatim String), so > you'll not be able to test this on your end (since Java doesn't have an > equivalent to the Verbatim String). > > Thanks again. > > -rb > > On 7/27/2011 2:10 PM, Bart Kiers wrote: > > Hi Richard, > > > > Both ANTLRWorks' debugger, and my Java test rig: > > > > import org.antlr.runtime.*; > > > > public class Main { > > public static void main(String[] args) throws Exception { > > WhitespaceInSymbolsLexer lexer = new > > WhitespaceInSymbolsLexer(new ANTLRStringStream("\"\"")); > > WhitespaceInSymbolsParser parser = new > > WhitespaceInSymbolsParser(new CommonTokenStream(lexer)); > > parser.compileUnit(); > > } > > } > > > > > > produce no errors when parsing "" (2 double quotes) as input: > > > > bart@hades:~/Programming/ANTLR/Demos/WhitespaceInSymbols$ java -cp > > antlr-3.3.jar org.antlr.Tool WhitespaceInSymbols.g > > bart@hades:~/Programming/ANTLR/Demos/WhitespaceInSymbols$ javac > > -cp antlr-3.3.jar *.java > > bart@hades:~/Programming/ANTLR/Demos/WhitespaceInSymbols$ java -cp > > .:antlr-3.3.jar Main > > bart@hades:~/Programming/ANTLR/Demos/WhitespaceInSymbols$ > > > > > > Then there must be something going differently in the CSharp3 target > > than in the Java target (note that I am not able to test the CSharp3 > > target here...). > > > > Regards, > > > > Bart. > > > > > > On Wed, Jul 27, 2011 at 11:01 PM, G. Richard Bellamy > > <rbell...@pteradigm.com <mailto:rbell...@pteradigm.com>> wrote: > > > > Sam, Bart & Jim, I really appreciate your help on this. > > > > Here's a more complete example, without the greedy confusion. I'm > > including the combined grammar and a test rig. > > > > I get: CombinedLexer:line 1:2 mismatched character '<EOF>' > > expecting '"' > > just before a NullReferenceException. > > > > GRAMMAR: > > ---------------------------- > > grammar Combined; > > > > options { > > language=CSharp3; > > TokenLabelType=CommonToken; > > output=AST; > > ASTLabelType=CommonTree; > > } > > > > @lexer::namespace{StringLiteralLexerTest} > > @parser::namespace{StringLiteralLexerTest} > > > > /* > > * Parser Rules > > */ > > > > public > > compileUnit > > : STRING > > ; > > > > /* > > * Lexer Rules > > */ > > STRING : '"' ('""' | ~'"')* '"'; > > > > TEST RIG: > > ------------------------------ > > static void Main() > > { > > CombinedLexer lexer = new CombinedLexer(new > ANTLRStringStream(@"""")); > > //lexer.TraceDestination = new > > ConsoleTextWriter(typeof(CombinedLexer)); > > > > CommonTokenStream tokenStream = new CommonTokenStream(lexer); > > > > CombinedParser parser = new CombinedParser(tokenStream); > > //parser.TraceDestination = new > > ConsoleTextWriter(typeof(CombinedParser)); > > > > CommonTree parseTree = parser.compileUnit().Tree; > > Console.WriteLine(parseTree.ToStringTree()); > > } > > > > List: http://www.antlr.org/mailman/listinfo/antlr-interest > > Unsubscribe: > > > http://www.antlr.org/mailman/options/antlr-interest/your-email-address > > > > > > List: http://www.antlr.org/mailman/listinfo/antlr-interest > Unsubscribe: > http://www.antlr.org/mailman/options/antlr-interest/your-email-address > List: http://www.antlr.org/mailman/listinfo/antlr-interest Unsubscribe: http://www.antlr.org/mailman/options/antlr-interest/your-email-address -- You received this message because you are subscribed to the Google Groups "il-antlr-interest" group. To post to this group, send email to il-antlr-inter...@googlegroups.com. To unsubscribe from this group, send email to il-antlr-interest+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/il-antlr-interest?hl=en.