Hi,



Sorry to ask this question yet again, but I can find a working solution after 2 days of searching.



The problem is, I need to know the line and column number of an AST element. I know absolutely nothing about C++, parsers, lexers or grammers. I simply use the following code to create an AST that represents a Java source file:

			

			// Create InputStream
			

			FileInputStream fileInputStream = new FileInputStream( file );
			

			

			// Create a Scanner that reads from an InputStream
			

			JavaLexer lexer = new JavaLexer( fileInputStream );
			

			lexer.setFilename( file.getName() );
			

			

			// Create a Parser that reads from a Scanner
			

			JavaRecognizer parser = new JavaRecognizer( lexer );
			

			parser.setFilename( file.getName() );
			

			

			// Parse
			

			parser.compilationUnit();
			

			

			ROOT = parser.getAST();
			

			( (CommonAST) ROOT ).setVerboseStringConversion( true, parser.getTokenNames() );
			

			

			JavaTreeParser treeParser = new JavaTreeParser();
			

			treeParser.compilationUnit( ROOT );
			

		

Then I extract the tokens I'm interested in from the AST. I have no knowledge of C++ or ANTLR and cant't understand the solutions that have posted - I didn't even know what an AST was before using ANTLR!!



I have tried extending the CommonAST class and overiding the initialize( Token tok ) method with the following:

			

			public void initialize( Token tok ) {
			

			setText( tok.getText() );
			

			setType( tok.getType() );
			

			

			LINE = tok.getLine();
			

			COLUMN = tok.getColumn();
			

			}
			

		

However, I don't know how I am to incororate the new AST class to get it to work. What I need is a working example of Java code that incorporates the line and column numbers into an AST - telling me that I need to this, that & the next thing to the ANTLR package is no good - I have no patients or desire learn what parsing, lexing and grammers are to solve such a trivial issue.



Thanks,

Chris    <<Less