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antlr

21 indexed repositories · View on GitHub

antlr4
ANTLR (ANother Tool for Language Recognition) is a powerful parser generator for reading, processing, executing, or translating structure...

Java · 19005 stars
grammars-v4
Grammars written for ANTLR v4; expectation that the grammars are free of actions.

ANTLR · 11056 stars
stringtemplate4
StringTemplate 4

Java · 1034 stars
intellij-plugin-v4
An IntelliJ plugin for ANTLR v4

Java · 495 stars
codebuff
Language-agnostic pretty-printing through machine learning (uh, like, is this possible? YES, apparently).

Java · 477 stars
antlrcs
The C# port of ANTLR 3, StringTemplate 3, and StringTemplate 4

C# · 294 stars
antlr3
antlr v3 repository (pulled from p4 with history from //depot/code/antlr/antlr3-main

Java · 253 stars
antlr4-intellij-adaptor
A library to support the use of ANTLR grammars in jetbrains IDE plugins for building custom languages.

Java · 220 stars
jetbrains-plugin-sample
A sample plugin for jetbrains IDEs that uses an ANTLR grammar for a nontrivial custom language.

Java · 120 stars
antlr4-tools
Tools to run antlr4 w/o needing to install java or antlr4!

Python · 118 stars
antlr-php-runtime
PHP Runtime for ANTLR4

PHP · 97 stars
antlr4-cpp
C++ target for ANTLR 4, including templates and runtime

C++ · 80 stars
antlr5

Java · 75 stars
symtab
Generic symbol table for lexically/statically scoped languages

Java · 53 stars
Antlr4Formatter
Formatter for ANTLR 4 grammars

ANTLR · 47 stars
antlr4-lab
A client/server for trying out and learning about ANTLR

Java · 45 stars
jetbrains-plugin-st4
An intellij/jetbrains plugin for StringTemplate .st and .stg files

Java · 26 stars
antlr4test-maven-plugin
A maven plugin used to test the grammars-v4 repo grammars

Java · 18 stars
website-antlr4
The ANTLR 4 Website

HTML · 16 stars
stringtemplate3
StringTemplate v3

Java · 15 stars
1 more repository lives on View on GitHub

Beginner friendly Everything

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Invalid input tests should be separated from valid input tests. Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

antlr/grammars-v4#5006 · Opened Sep 13, 2026
[C++] Option to write generated header files to a separate directory Open

Difficulty 4/5 3-5 days Newbie friendliness 68/100

antlr/antlr4#4975 · Opened Sep 12, 2026
In IntelliJ IDEA 2026.2.2, an error occurs: `'runBlockingCancellable' is forbidden in the Write Action because it may start a long-running computation.` Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 45/100

antlr/intellij-plugin-v4#745 · Opened Sep 7, 2026
Python install no longer works Open

Difficulty 2/5 1-3 hours Newbie friendliness 82/100

antlr/antlr4-tools#28 · Opened Sep 5, 2026
Add grammar for Decaf. Open

decaf new-grammar

Difficulty 3/5 1-2 days Newbie friendliness 65/100

antlr/grammars-v4#4999 · Opened Sep 1, 2026
Outdated FOSS used in antlr Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

antlr/antlr4#4972 · 1 reaction · Opened Aug 20, 2026
Lexer::setInputStream calls reset() before updating _input, leading to use-after-free when reusing lexer across multiple statements Open

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

antlr/antlr4#4969 · Opened Aug 10, 2026
[MySQL] URL cannot be used as an unquoted identifier on 8.0.32+ Open

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

antlr/grammars-v4#4962 · Opened Aug 5, 2026
[PostgreSQL] NOTICE cannot be used as an unquoted identifier Open

PostgreSQL

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

antlr/grammars-v4#4960 · Opened Aug 5, 2026
Is there a patched release planned for ANTLR 4 Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

antlr/antlr4#4966 · 1 comment · 3 reactions · Opened Aug 3, 2026
caching parse tree object Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

antlr/antlr4#4965 · 3 comments · Opened Jul 30, 2026
TypeScript runtime tests fail in CI since ~April: ts-node incompatible with typescript@latest (TS 7) Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

antlr/antlr4#4962 · 3 reactions · Opened Jul 25, 2026
Just doesn't work on my computer without versioning (running inside uv venv) Open

Difficulty 2/5 1-3 hours Newbie friendliness 65/100

antlr/antlr4-tools#27 · 1 comment · 2 reactions · Opened Jul 23, 2026
Code is regenerated all the time Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

antlr/antlr4#4958 · Opened Jul 20, 2026
Ada Grammars Parse Classwide Types Incorrectly Open

Difficulty 3/5 1-2 days Newbie friendliness 65/100

antlr/grammars-v4#4944 · Opened Jul 20, 2026
CVE-2026-13500 Resolution Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

antlr/antlr4#4952 · 15 comments · 1 reaction · Opened Jul 3, 2026
[snowflake] Snowflake grammar is terribly slow. Open

performance snowflake

Difficulty 4/5 3-5 days Newbie friendliness 48/100

antlr/grammars-v4#4921 · Opened Jul 2, 2026
missing std::istream support in UnbufferedCharStream Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

antlr/antlr4#4950 · Opened Jun 22, 2026
Likely all TypeScript ports are broken, again. Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

antlr/grammars-v4#4896 · Opened Jun 13, 2026
[kotlin] kotlin grammars. Open

kotlin

Difficulty 5/5 Over a week Newbie friendliness 35/100

antlr/grammars-v4#4888 · Opened Jun 9, 2026
[Postgresql] Fix uescape_ rule placement in identifier Open

PostgreSQL

Difficulty 1/5 Under an hour Newbie friendliness 85/100

antlr/grammars-v4#4876 · Opened May 31, 2026
Error to Parse WebIDL Open

WebIDL

Difficulty 3/5 1-2 days Newbie friendliness 55/100

antlr/grammars-v4#4873 · Opened May 28, 2026
[antlr/antlr4] Sync changes in grammar from antlr-ng. Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

antlr/grammars-v4#4866 · Opened May 25, 2026
Are there plans for a new release? Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

antlr/antlr4#4940 · 4 comments · 6 reactions · Opened May 20, 2026
[Java] Data races in ANTLR runtime Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

antlr/antlr4#4936 · 4 comments · Opened May 11, 2026
[plsql] USING INDEX without index name Open

plsql

Difficulty 3/5 1-2 days Newbie friendliness 65/100

antlr/grammars-v4#4840 · 1 comment · Opened May 8, 2026
Add Cymbol grammar. Open

new-grammar

Difficulty 3/5 1-2 days Newbie friendliness 35/100

antlr/grammars-v4#4828 · Opened Apr 29, 2026
Release all grammars on maven central Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

antlr/grammars-v4#4823 · 1 comment · Opened Apr 23, 2026
cannot find tokens file f2c_create_db/parser/make/MakeLexer.tokens Open

Difficulty 3/5 1-2 days Newbie friendliness 56/100

antlr/antlr4#4934 · 2 comments · Opened Apr 22, 2026
Increase version of org.codehaus.plexus:plexus-utils Open

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

antlr/antlr4#4932 · 1 reaction · Opened Apr 10, 2026
[Cpp runtime] Not printing correct debugging output with trace. Open

Difficulty 2/5 1-3 hours Newbie friendliness 62/100

antlr/antlr4#4929 · Opened Mar 16, 2026
Add a way to limit recursion depth Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

antlr/antlr4#4928 · 1 comment · Opened Mar 16, 2026
[Csharp/v7] C# grammar generates Python lexer with "this." calls causing runtime "NameError" Open

csharp

Difficulty 3/5 1-2 days Newbie friendliness 48/100

antlr/grammars-v4#4787 · 2 comments · Opened Mar 12, 2026
[New Grammar Request] UniBasic / UniVerse BASIC (Rocket U2 / Pick MultiValue) Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

antlr/antlr4#4927 · 1 comment · Opened Mar 12, 2026
[C++] Failed assertion in `Parser::getParseListeners` : "vector iterators in range are from different containers", bug in `Parser::setTrimParseTree` Open

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

antlr/antlr4#4926 · 1 comment · Opened Mar 11, 2026
[PL/SQL] Parser grammar generates conflicting names for PHP methods Open

plsql

Difficulty 3/5 1-2 days Newbie friendliness 42/100

antlr/grammars-v4#4785 · 1 comment · Opened Mar 10, 2026
[csharp] Newer versions of the grammar for C#. Open

csharp

Difficulty 5/5 Over a week Newbie friendliness 25/100

antlr/grammars-v4#4783 · 2 comments · Opened Mar 9, 2026
[csharp/v7] Grammar cannot parse "antlr4 -Dlanguage=CSharp"-generated files. Open

csharp

Difficulty 4/5 3-5 days Newbie friendliness 35/100

antlr/grammars-v4#4782 · 1 comment · Opened Mar 8, 2026
C++ runtime installs headers in the wrong location Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

antlr/antlr4#4924 · Opened Mar 7, 2026
README section about Gradle build might be outdated Open

Difficulty 1/5 1-3 hours Newbie friendliness 62/100

antlr/antlr4-intellij-adaptor#53 · Opened Mar 7, 2026
[new grammar] LBNF: labeled BNF. Open

bnf new-grammar

Difficulty 3/5 1-2 days Newbie friendliness 40/100

antlr/grammars-v4#4778 · Opened Mar 2, 2026
[All grammars] Add ambiguity regression testing. Open

infrastructure

Difficulty 5/5 Over a week Newbie friendliness 30/100

antlr/grammars-v4#4768 · Opened Feb 25, 2026
Bad request on central.sonatype.com Open

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

antlr/antlr4-tools#22 · 15 comments · 8 reactions · Opened Feb 24, 2026
Nuget package for 4.13.2 Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

antlr/antlr4#4922 · 5 reactions · Opened Feb 24, 2026
[PL/SQL] Exponential parse time on sum(column) + sum(column) + sum(column) + ... Open

plsql

Difficulty 4/5 3-5 days Newbie friendliness 48/100

antlr/grammars-v4#4758 · 5 comments · Opened Feb 20, 2026
Adding vCard 3.0 and 4.0 grammars Open

new-grammar

Difficulty 5/5 Over a week Newbie friendliness 25/100

antlr/grammars-v4#4756 · 6 comments · Opened Feb 17, 2026
[PL/SQL] selection_directives syntax errors Open

plsql

Difficulty 3/5 1-2 days Newbie friendliness 35/100

antlr/grammars-v4#4747 · 5 comments · Opened Feb 10, 2026
C++ visitors name function parameters inconsistently Open

Difficulty 2/5 1-3 hours Newbie friendliness 62/100

antlr/antlr4#4919 · 1 reaction · Opened Jan 29, 2026
golang parser crashes with java.lang.ArrayIndexOutOfBoundsException Open

Difficulty 3/5 1-2 days Newbie friendliness 62/100

antlr/grammars-v4#4733 · 2 comments · Opened Jan 28, 2026
Buildtime code generation is non-deterministic Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

antlr/stringtemplate4#325 · Opened Jan 28, 2026

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