JetBrains/Grammar-Kit

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Grammar files support & parser/PSI generation for IntelliJ IDEA

Stars: 771
Forks: 137
Open beginner issues: 0
Indexed issues: 55
Avg merge: 11h 14m
Merged PRs (30d): 1

Dominant language: Java
License: No license data
Last GitHub push: Aug 29, 2026
Latest indexed: Sep 18, 2026
Contributing guide: No contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed

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55 open issues indexed

Ant task with psiImplUtilClass Open

JetBrains/Grammar-Kit#35 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Allow external lexer to be configured with Live Preview Open

JetBrains/Grammar-Kit#44 · 7 comments · 7 reactions · 0 assignees · Indexed Sep 18, 2026
Generated parser "losing" parse error information Open

JetBrains/Grammar-Kit#54 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Erroneous @Nullable annotation on generated getter Open

JetBrains/Grammar-Kit#59 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Inconsistent output when generating parser code (Type vs. List<Type>) Open

Bug

JetBrains/Grammar-Kit#60 · 10 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Auto generate presence checking methods Open

JetBrains/Grammar-Kit#114 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Is there any way to keep psiImplUtilClass smaller? Open

JetBrains/Grammar-Kit#132 · 9 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Token accessors return `PsiElement`, instead of the customized `LeafPsiElement` derivation Open

JetBrains/Grammar-Kit#137 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 18, 2026
wrong error ranges Open

JetBrains/Grammar-Kit#140 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Consider implementing recoverWhile=auto|custom key Open

JetBrains/Grammar-Kit#143 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
psiImplUtilClass method matching fails for methods w/ generic method parameters Open

JetBrains/Grammar-Kit#156 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Incorrect/missing alternatives in error report at runtime Open

JetBrains/Grammar-Kit#195 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Recurred token accessors are not generated Open

JetBrains/Grammar-Kit#200 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Add Javadoc on generated Psi interfaces Open

Feature

JetBrains/Grammar-Kit#204 · 1 comment · 3 reactions · 0 assignees · Indexed Sep 18, 2026
Allow generating Kotlin code instead of Java Open

JetBrains/Grammar-Kit#212 · 2 comments · 18 reactions · 0 assignees · Indexed Sep 18, 2026
Option for not generating interfaces Open

JetBrains/Grammar-Kit#219 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Highlight escape sequences in tokens strings Open

JetBrains/Grammar-Kit#224 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Explain documentation for regexp tokens Open

JetBrains/Grammar-Kit#225 · 0 comments · 4 reactions · 0 assignees · Indexed Sep 18, 2026
Add completion for token string literals Open

JetBrains/Grammar-Kit#228 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Add documentation for suggested keywords Open

JetBrains/Grammar-Kit#229 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
It's not possible to collapse rule to the token when it extends parent node Open

JetBrains/Grammar-Kit#246 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Unexpected token reported as expected token Open

JetBrains/Grammar-Kit#257 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 18, 2026
Misleading second error when recovery consumes more than one token Open

JetBrains/Grammar-Kit#260 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Allow putting keywords in quotation marks for error messages Open

JetBrains/Grammar-Kit#262 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Introduce macro for recovery rules Open

JetBrains/Grammar-Kit#266 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Whitespace field not generated in elementTypeHolderClass Open

JetBrains/Grammar-Kit#267 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Accessors not generated for rule with multiple same tokens Open

JetBrains/Grammar-Kit#280 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Syntax error ruining the parsing of the rest of the file Open

JetBrains/Grammar-Kit#282 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
How to make an external rules as elementTypeClass? Open

JetBrains/Grammar-Kit#289 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
How to use same token in multiple expressions? Open

JetBrains/Grammar-Kit#295 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Idea: TokenSet instead of vararg array of token elements Open

Feature

JetBrains/Grammar-Kit#296 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
No psi interface generated for recursively-only used rule Open

JetBrains/Grammar-Kit#297 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 18, 2026
Is there a plan to implement incremental PSI parsing? Open

waiting for feedback

JetBrains/Grammar-Kit#298 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 18, 2026
LivePreview for Lexer Open

JetBrains/Grammar-Kit#301 · 5 comments · 2 reactions · 0 assignees · Indexed Sep 18, 2026
Sealed types support Open

JetBrains/Grammar-Kit#305 · 8 comments · 2 reactions · 0 assignees · Indexed Sep 18, 2026
Support for pegjs files Open

JetBrains/Grammar-Kit#330 · 0 comments · 2 reactions · 0 assignees · Indexed Sep 18, 2026
Should we have comments in BNF? Open

JetBrains/Grammar-Kit#337 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Do not generate unused imports Open

JetBrains/Grammar-Kit#338 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Add nullability annotations in generated code Open

JetBrains/Grammar-Kit#346 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
False positive "Unresolved BNF References" for `<<eof>>` if `parserUtilClass` is set Open

JetBrains/Grammar-Kit#350 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Wrong priority for distfix operator with Pratt parser Open

JetBrains/Grammar-Kit#353 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Grammark Kit generates duplicate @NotNull tags for one method Open

JetBrains/Grammar-Kit#354 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Have a better message than `<string> expected, got '<string>'` when the strings are equal Open

JetBrains/Grammar-Kit#373 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
java.lang.RuntimeException: Could not find installation home path. Please make sure bin/idea.properties is present in the installation directory. Open

JetBrains/Grammar-Kit#379 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Inconsistent regex between Live Preview and JFlex Generator Open

JetBrains/Grammar-Kit#385 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
ABNF / EBNF syntax support Open

JetBrains/Grammar-Kit#393 · 0 comments · 3 reactions · 0 assignees · Indexed Sep 18, 2026
Grammar railroad diagram Open

JetBrains/Grammar-Kit#395 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 18, 2026
Left rules with "more than one quantifier" Open

JetBrains/Grammar-Kit#396 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Grammar-Kit generates unnecessary annotations for custom methods (IntelliJ IDEA 2025.1.2+) Open

JetBrains/Grammar-Kit#401 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 18, 2026
Grammar-Kit generats stub based psi element with a constructor using IStubElementType Open

JetBrains/Grammar-Kit#403 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 18, 2026

JetBrains/Grammar-Kit

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