[antlr-interest] ANTLR and C# parser

[tdknghi]

 Hi,

I have to build a C# parser based on ANTLR as part of my project. I 
succeeded to run nant to build the release version of ANTLR for C# 
(based on the ANTLR Documentation section). My questions are:

1. With the csharp grammar provided by Rajendra Kumar Komandur (from 
the ANTLR website), parser that is generated from that grammar is in 
Java or C#?
   _ I ran java antlr.Tool csharp.g and the following Java classes 
are generated:
       * GeneratedCSharpRecognizer.java
       * GeneratedCSharpLexer.java
       * GeneratedCSharpTokenTypes.java
       * GeneratedCSharpTokenTypes.txt
   _ Is it the correct behaviour that it's suppose to be?


2. I wrote a Main.java class (which listed below) to call those 
generated classes that I mentioned in question 1. Here my Main class

import java.io.*;
import antlr.collections.AST;
import antlr.collections.impl.*;
import antlr.debug.misc.*;
import antlr.*;
import java.awt.event.*;

public class Main
{
	public static void main(String[] args)
	{
		try
		{
			File f = new File(args[0]);
			Reader r = new BufferedReader(new FileReader
(f));
		
			// Create a scanner that reads from the
                        // input stream passed to us
			GeneratedCSharpLexer lexer = new 
GeneratedCSharpLexer(r);
			lexer.setFilename(f.getName());

			// Create a parser that reads from the 
                       // scanner
			GeneratedCSharpRecognizer parser = new 
GeneratedCSharpRecognizer(lexer);
			parser.setFilename(f.getName());

			// start parsing at the compilationUnit rule
			parser.compilationUnit();
		}
		catch(FileNotFoundException fnfe)
		{
			fnfe.printStackTrace();
		}
		catch(RecognitionException re)
		{
			re.printStackTrace();
		}
		catch(TokenStreamException tse)
		{
			tse.printStackTrace();
		}
	}	
}


However i got the following error message: 

    "expected token: class"

when I attempt to parse a C# program using java Main mycsharp.cs

   Do any of you have any idea what's wrong here? and how do I fix 
it?
 

3. Is there anyway to make the provided csharp grammar to generated 
C# parser class instead of Java class? I attempted to specify the 
language option in the grammar file. However, I got error too.

Thanks a lot for your help.

MiMi


 

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