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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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[java] Java generics not parsed correctly. Open

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

antlr/grammars-v4#4724 · Opened Jan 8, 2026
requiresSeek assignment is ineffective in LexerActionExecutor::execute() (lambda value capture causes state isolation) Open

Difficulty 2/5 1-3 hours Newbie friendliness 52/100

antlr/antlr4#4915 · Opened Jan 2, 2026
[zig] `container_members` is ambiguous. Open

zig

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

antlr/grammars-v4#4709 · Opened Dec 14, 2025
Unexpected glitch in left-recursion handling and ambiguity. Open

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

antlr/antlr4#4911 · 2 comments · Opened Dec 13, 2025
Local installation of antlr4 when pointed to cpp standard v17 (from v11) does not compile anymore Open

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

antlr/antlr4#4910 · Opened Dec 9, 2025
[python3_13] The parser cannot distinguish whitespace in f-strings Open

python3

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

antlr/grammars-v4#4685 · 3 comments · Opened Nov 24, 2025
[Bug] SyntaxError antlr4 does not provide an export named 'DecisionState' when use typescript esm import Open

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

antlr/antlr4#4905 · 3 comments · 3 reactions · Opened Nov 22, 2025
[runtime/Dart] semantic_context.dart imports from 'package:antlr4', it should not. Open

Difficulty 1/5 Under an hour Newbie friendliness 55/100

antlr/antlr4#4904 · Opened Nov 19, 2025
[rust] The grammar for Rust is very slow, contains other problems. Open

rust

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

antlr/grammars-v4#4677 · Opened Nov 14, 2025
[C] declarationSpecifiers is too greedy, take initDeclaratorList as typedefName Open

c

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

antlr/grammars-v4#4676 · 7 comments · Opened Nov 13, 2025
[rust] Rust grammar not in target agnostic format, unclear readme information. Open

rust

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

antlr/grammars-v4#4675 · Opened Nov 13, 2025
Question about the Oracle versions that PlSqlParser.g4 supports Open

plsql

Difficulty 1/5 Under an hour Newbie friendliness 35/100

antlr/grammars-v4#4671 · 2 comments · Opened Nov 11, 2025
can the icu4j tool dependency be excluded / the existing exclusion be fixed? Open

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

antlr/antlr4#4900 · 3 comments · Opened Nov 5, 2025
Mismatched input error: inaccurate list of expected tokens Open

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

antlr/antlr4#4899 · 7 comments · Opened Oct 31, 2025
[acme] "values unreachable" warnings in acme.g4. Open

acme

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

antlr/grammars-v4#4667 · Opened Oct 31, 2025
[python3_13] Update changes from source. Open

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

antlr/grammars-v4#4663 · 1 comment · Opened Oct 29, 2025
Inconsistent behaviour when importing grammars with lexical rules and modes Open

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

antlr/antlr4#4898 · Opened Oct 29, 2025
[PL/SQL] Parser fails on NOT IN — grammar missing case Open

plsql

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

antlr/grammars-v4#4656 · 2 comments · Opened Oct 28, 2025
[Smalltalk] Smalltalk grammar has no explicit license Open

license

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

antlr/grammars-v4#4654 · Opened Oct 26, 2025
[postgresql] grammar update Open

PostgreSQL

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

antlr/grammars-v4#4652 · Opened Oct 24, 2025
[sql/tsql] STRING_SPLIT function not present in TSql grammar Open

tsql

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

antlr/grammars-v4#4650 · 1 comment · Opened Oct 23, 2025
Using version 0.2 via Maven Open

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

antlr/antlr4-intellij-adaptor#52 · 2 comments · 1 reaction · Opened Oct 12, 2025
Swift ANTLR Runtime: Terminals not working / crash when calling ctx.getText() Open

Difficulty 3/5 1-2 days Newbie friendliness 25/100

antlr/antlr4#4892 · 2 comments · Opened Oct 4, 2025
[JAVA][FR]Support pattern matching in generated Parser code Open

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

antlr/antlr4#4891 · 2 reactions · Opened Oct 4, 2025
tokens Open

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

antlr/grammars-v4#4643 · 1 comment · Opened Oct 3, 2025
[New grammar support] Support for Databricks grammar Open

new-grammar

Difficulty 5/5 Over a week Newbie friendliness 20/100

antlr/grammars-v4#4641 · Opened Sep 30, 2025
[protobuf2, protobuf3] Text Format Language Specification is not implemented correctly for protobuf2 or protobuf3. Open

protobuf

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

antlr/grammars-v4#4637 · 1 comment · Opened Sep 26, 2025
[protobuf2] The applied occurrence of `syntax` should not be mandatory. Open

protobuf

Difficulty 1/5 Under an hour Newbie friendliness 55/100

antlr/grammars-v4#4635 · Opened Sep 26, 2025
[protobuf3] pom.xml is incorrect for files to test with generated parser. Open

protobuf

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

antlr/grammars-v4#4634 · 1 comment · Opened Sep 26, 2025
[protobuf2] Extensions not parsed fully in Protobuf2 Open

protobuf

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

antlr/grammars-v4#4629 · 5 comments · Opened Sep 26, 2025
Regression in parsing expressions between ANTLR 4.6 and 4.7.2+ Open

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

antlr/antlr4#4890 · 8 comments · Opened Sep 23, 2025
JAVA: TokenStreamRewriter#reduceToSingleOperationPerIndex consumes lots of memory in case of lots of RewriteOperations Open

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

antlr/antlr4#4886 · Opened Sep 14, 2025
NoViableAltException was thrown at a incorrect position Open

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

antlr/antlr4#4885 · Opened Sep 13, 2025
Generated Dart code for Flutter web contains integer literals that exceed JavaScript's safe integer limit (2^53) Open

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

antlr/antlr4#4880 · 3 comments · Opened Sep 9, 2025
[java] Huge max-k in d=39 classBodyDeclaration while parsing ManyStringsConcat.java Open

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

antlr/grammars-v4#4624 · 1 comment · Opened Sep 8, 2025
Grammar error handling reports invalid position of error token inside action code Open

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

antlr/antlr4#4879 · Opened Sep 7, 2025
[clickhouse] ambiguity in selectStmt/selectUnionStmt Open

clickhouse

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

antlr/grammars-v4#4623 · Opened Sep 7, 2025
Critical vulnerability in dependency com.ibm.icu:icu4j:72.1 Open

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

antlr/antlr4#4877 · 1 comment · Opened Sep 3, 2025
[various grammars] Improper use of start rule on RHS. Open

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

antlr/grammars-v4#4610 · 1 comment · Opened Sep 2, 2025
[c] AsmBlock rule wrong, not ISO C11 anyways. Open

c

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

antlr/grammars-v4#4609 · 2 reactions · Opened Aug 30, 2025
Javascript runtime should include and default to sources instead of distributable packages Open

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

antlr/antlr4#4876 · Opened Aug 26, 2025
[build] Getting npm 403 errors. Open

Difficulty 3/5 1-2 days Newbie friendliness 25/100

antlr/grammars-v4#4604 · Opened Aug 26, 2025
the lab is down again Open

Difficulty 5/5 Over a week Newbie friendliness 10/100

antlr/antlr4#4875 · 1 reaction · Opened Aug 24, 2025
[java] Incorrectly refactored `typeParameter` Open

java

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

antlr/grammars-v4#4599 · Opened Aug 22, 2025
[java] Ambiguity of `statement/expression` and `localVariableDeclaration` Open

java

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

antlr/grammars-v4#4598 · Opened Aug 21, 2025
Possible bad copy paste in code Open

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

antlr/antlr4#4872 · Opened Aug 20, 2025
[java] typeIdentifier in grammar is incorrect. Open

java

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

antlr/grammars-v4#4594 · Opened Aug 20, 2025
VCPKG cannot build the library | new release request Open

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

antlr/antlr4#4871 · 1 comment · 5 reactions · Opened Aug 17, 2025
Go repo is missing the latest 4.13.2 Open

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

antlr/antlr4#4869 · 2 reactions · Opened Aug 4, 2025
[protobuf3] proto3 files can include proto2 files. Open

protobuf

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

antlr/grammars-v4#4554 · Opened Jul 19, 2025

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