The input content: The grammar: grammar test; p : EOF; Char : [a-z]; fragment Tab : '\t'; fragment Space : ' '; T1 : (Tab|Space)+ ->skip; T2 : '#' T1+ Char+; The matching result is thi...

How can I access alternate labels in ANTLR4 while generically traversing a parse tree? Or alternatively, is there any way of replicating the functionality of the ^ operator of ANTLR3, as that would...

I want to keep white space when I call text attribute of token, is there any way to do it? Here is the situation: We have the following code IF L > 40 THEN; ELSE IF A = 20 THEN PUT "HELLO";...

With ANTLR I parse a grammar. The ANTLR errors are indicated in a custom editor for the grammar. However I would like to disable the printing of error messages to a Java console. I've implemented ...

I am trying to convert ant ANTLR3 grammar to an ANTLR4 grammar, in order to use it with the antlr4-python2-runtime. This grammar is a C/C++ fuzzy parser. After converting it (basically removing tr...

From the Definitive ANTLR4 reference I have run through the first example and it has generated the JAVA target. In the directory C:\JavaLib I have antlr-4.5-complete.jar When I attempt to compile i...

I want to use Antlr4 to parse some files in my C# application. I have been able to generate the parser and lexer files so far given my grammer. Now I would like to use read in the files and apply t...

Since YAML has a rather complicated syntax, is it possible to write a parser for YAML mainly using ANTLR4 ? I was looking for examples, that implement the YAML like indentation parsing and the dete...

Antlr4 has a new class ParseTreeWalker. But how do I use it? I am looking for a minimal working example. My grammar file is 'gram.g4' and I want to parse a file 'program.txt' Here is my code so fa...

I would like to use ANTLR4 with Python 2.7 and for this I did the following: I installed the package antlr4-4.6-1 on Arch Linux with sudo pacman -S antlr4. I wrote a MyGrammar.g4 file and success...

I am having trouble getting Intellij to recognize the generated source code from antlr4. Any reference to the generated code appears as errors, code completion doesn't work, etc. I am using maven ...

I built an Antlr 4 filter using a grammar (not important in the context here) and the filters look something like "age > 30 AND height < 6.1". However, the question is, I'll build this filter o...

I am building a library which contains certain parsers. These parsers are internally built with ANTLR4. Since the generated classes are all public, users of my library are able to see all the class...

I translate one language into another with ANTLR4. For example when I read numerical literals I can return an Integer or Double. @Override public Integer visitIntegerValue(Parser.IntegerValueCont...

I am using ANTLR4 JavaScript to create a sort of a web IDE for a custom language. It all works great, apart from the fact that errors are logged to the console and I can't figure out a way to redir...

I try to use the gradle antlr plugin, but run into several problems. I have a grammar file called wls.g4: grammar WlsScript; @header { package hu.pmi.wls.antlr.ws; } program : 'statementList...

I am new to ANTLR framework. I have been working around this for a week. Now am in a situation where i need to parse the Java file and extract the data. Am using ANTLR 4 for parsing. I create the L...

We are building our own query language similar to Mysql using antlr4. Except we only use where clause, in other words user does not enter select/from statements. I was able to create grammar for i...

What is the format for specifying a package in the Antlr4 maven plugin antlr4-maven-plugin? I feel like I should be able to do the following: <plugin> <groupId>com.tunnelvisionlabs&l...

I have an antlr4 lexer grammar. It has many rules for words, but I also want it to create an Unknown token for any word that it can not match by other rules. I have something like this: Whitespace...

I'm currently porting over some code from the C# version of ANTLR4 to the C++ target and I'm currently running into some issues. The way I built my AST in C# was to create a base class (let's call ...

I am a newbie to Antlr and I wanted the below implementation to be done using Antlr4. I am having the below-written functions. 1. FUNCTION.add(Integer a,Integer b) 2. FUNCTION.concat(String a,Stri...

I'm new to ANTLR and trying to write grammar in ANTLR4 without any prior brush with the previous version. I'm following the book 'The Definitive ANTLR 4 Reference'. I use Eclipse and installed ANTL...

Currenlty I'm working on my own grammar and I would like to have specific error messages on NoViableAlternative, InputMismatch, UnwantedToken, MissingToken and LexerNoViableAltException. I already...

Since Antlr4 is new version of Antlr and this is the first time I use it. I have downloaded the Antlr4 plugin from eclipse marketplace. I made new ANTLR 4 project and I got Hello.g4 Afterward I sa...