I'm trying to convert the ActionSplitter.g grammar to ANTLR4 and came across a problem wrt. semantic predicates. The grammar has rules like this: QUALIFIED_ATTR : '$' x=ID '.' y=ID {input.LA(1)!=...

I have to use ANTLR 3 with C target and I have some problems to understand how to output different messages if the parsing is successfull or not. What I have to add to my main.c file to obtain this ...

I have some project with antlr3 grammar, I managed to migrate it to antlr4 (antlr4 accepts it and generates code). But this project also uses this grammar to generate protobuf to implement some typing ...

I'm working with ANTLR4 in Java to create a custom language parser. I've generated my lexer and parser using a grammar file (CCAL.g4), and I'm implementing a visitor class (EvalVisitor) extending ...

I'm creating a parser for formulas. I encountered unexpected behavior of IDENT (see code below). Theoretically, it should match 1 or more occurrences of Upper/Lower case letters + digits + '_'. But in ...

I am currently working on rewriting a parser project of mine from java to C. I'd love to stick with ANTLR as I find it easy to use, but unfortunately ANTLR4 no longer supports C targets. Luckily, ...

Eclipse version: 2022-09 Eclipse m2e version: 2.0.4 antlr version: 3 antlr3-maven-plugin: 3.5.3 I have a project with a Logic.g file. Everything was working OK on a previous version of Eclipse (where ...

For the below grammar: grammar Test; options { language = Java; output=AST; } reference : TASK | NAME ; TASK : (~'^')+ EOF ; NAME : ('A'..'Z')+ ; I get the following error: error(208): ...

I am working on a legacy project which needs to be upgraded to use Java8. During the upgrade we are facing issues with ANTL3.3 as it not compatible with Java8. Now because of certain dependencies we ...

how to add relational operations to my code Thanks My code is grammar denem1; options { output=AST; } tokens { ROOT; } parse : stat+ EOF -> ^(ROOT stat+) ; ...

I'm running antlr with maven. Antlr generates .java file from .g file and I need to post process generated java file (do some changes in it). How can I do it? <plugin> <groupId>...

Hi I'm currently trying to extract all tokens from ANTLR in C#, i'm using Antlr4.CodeGenerator and Antlr4.Runtime packages. I want them structured in a way i can manipulate them, change their content ...

We have this exercise that we have to do in class and the professor asked us to figure out good reasons to choose the listener method over visitor method in order to implement a solution for a ...

As a simple example, let's say I have the following. parse_rule0 : parse_rule1 ',' parse_rule2 ';' ; pare_rule1 : ... ; parse_rule2: ... ; PUNCTUATION : ',' | '.'| ';' | ':' ; When Antlr4 (...

I've been recently working on a small demo expression grammar in Xtext: The Grammar grammar org.example.expressions.Expressions with org.eclipse.xtext.common.Terminals generate expressions "http:...