antlr

In ANTLR, version 3, how can the line number be obtained in the @init action of a high-level tree-parser rule? For example, in the @init action below, I'd like to push the line number along with the sentence text. sentence @init { myNodeVisitor.pushScriptContext( new MyScriptContext( $sentence.text )); } : assignCommand | actionCommand; finally { m_nodeVisitor.popScriptContext(); } I need to push the context before the execution of the actions associated with symbols in the rules. Some things that don't work: Using $sentence.line -- it's not defined, even though $sentence.text is. Moving the

I'm new to both Xtext and ANTLR. I need to translate an ANTLR (.g) grammar into an XTEXT (.xtext) grammar. In the ANTLR grammar there are syntactic predicates which are not supported by Xtext. Is there a way to remove/translate these predicates? Thanks EDIT The ANTLR grammar which I'm trying to translate can be found here: /* * Copyright 2009, Google Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright

I develop in both PHP and Java. Eclipse PDT appears to require DLTK 4.0, which it has no problem getting. ANTLR IDE appears to require DLTK3. I've tried copying the plugins 3.0 into my Eclipse plugins / features directory: http://download.eclipse.org/technology/dltk/downloads/drops/R3.0/S-3.0.1-201108261011/ This worked on a machine without PDT, but I can't get it to work when I have PDT. I have also tried using the marketplace, but I get the same dependency errors. Note I'm on 64bit Linux. Try to add the DLTK 3.0 repository and then install ANTLR again, so maybe Eclipse can fetch the plugin

I'm new to ANTLR, and I'm trying to expand upon the example of a simple calculator presented here . Specifically, I've tried adding some simple functions, negative numbers and so on, to familiarize myself with ANTLR. However, I've run into a bit of a problem trying to implement "implicit" multiplication (for example, 3cos(2)sin(2) would be interpreted as 3*cos(2)*sin(2)). I've found a question on Stack Overflow with the same kind of problem ( here ). The general form of the solution to that problem looks like what I'd found on my own, so I'm not sure where my problem lies. My grammar is below.

I am attempting to get a basic ECMAScript parser working, and found a complete ANTLR grammar for ECMAScript 3 , which appears to compile ok and produces the appropriate Lexer/Parser/Walker Java files. (Running inside ANTLR IDE plugin for Eclipse 3.5) However, when actually trying to use it with some simple test code (following guide on ANTLR wiki ), it just hangs when trying to create the parser: CharStream MyChars = new ANTLRFileStream(FileName); // FileName is valid ES3Lexer MyLexer = new ES3Lexer(MyChars); CommonTokenStream MyTokens = new CommonTokenStream(MyLexer); MyTokens.setTokenSource

I tried this solution but it didn't seem to work for me Here's an excerpt from my grammer: module : BEGIN MODULE IDENT STRING module_element* END MODULE ; module_element : element_1 | element_2 | element_3 | ... ; There is a bigger tree below each element. Now when a RecognitionException occurs I want to consume tokens until either the next module_element matches or the parent END MODULE matches. Any hints on how to do this inside a class inheriting from DefaultErrorStrategy? edit: Here is a MCVE: Program.cs namespace AntlrExample { class Program { static void Main(string[] args) { var