all
problem during build antlr4 4.13.2 (ubuntu20, openjdk11)

I am creating a new new grammar file for Natural-adabas Language. As a starting point I have relied on ChatGPT for generating the initial grammar syntax.

ANTLR newbie here.
I just got into ANTLR recently and I am trying to parse IP tables using antlr.
This is the error I got:

Parses than can be used to parse numbers of any kind, why happens this error (on image, its expecting some boolean or zero tokens)? i expecting normal number parsing and not the error that exists right now by some time. antlr4 source numbers antlr4

In this official document (at https://github.com/antlr/grammars-v4/blob/master/sql/mysql/Oracle/README.md), it is mentioned that:

In this official document (at https://github.com/antlr/grammars-v4/blob/master/sql/mysql/Oracle/README.md), it is mentioned that:

Antlr version: antlr-4.13.1-complete.jar lexer.g4/parser.g4: Basically equal to github.com/antlr/grammars-v4/tree/master/sql/mysql/Oracle, Only three lines were added to handle situations where a string contains multiple SQL statements： queryMulti : ((simpleStatement | beginWork) SEMICOLON_SYMBOL?)* EOF ; test sql is: SELECT * FROM table_a AS a INNER JOIN table_b AS b ON a.field_1=b.field_2 i added error listener and get: 15:18:48 Error: […]

I would like to tweak my grammar so that the visitMethod_declaration() can ignore the commented code

My grammar is

Using c++ During a token recognition error in the antlr4 Lexer how can I set a token type to it?