https://github.com/ruby/racc

Racc is an LALR(1) parser generator. It is written in Ruby itself, and generates ruby programs.
https://github.com/ruby/racc

Keywords

lalr-parser-generator parser-generator

Keywords from Contributors

rubygems activerecord documentation-tool mvc activejob repl json-parser libyaml rack psych

Last synced: about 15 hours ago
JSON representation

Repository metadata

Racc is an LALR(1) parser generator. It is written in Ruby itself, and generates ruby programs.

Host: GitHub
URL: https://github.com/ruby/racc
Owner: ruby
License: other
Created: 2008-11-10T21:24:07.000Z (over 17 years ago)
Default Branch: master
Last Pushed: 2026-05-13T05:45:16.000Z (12 days ago)
Last Synced: 2026-05-17T01:06:51.105Z (8 days ago)
Topics: lalr-parser-generator, parser-generator
Language: Yacc
Homepage: https://ruby.github.io/racc/
Size: 3.5 MB
Stars: 555
Watchers: 50
Forks: 90
Open Issues: 11
Releases: 24
Metadata Files:
- Readme: README.ja.rdoc
- Changelog: ChangeLog
- License: COPYING

README.ja.rdoc

          = Racc

* https://github.com/ruby/racc

== DESCRIPTION:

  Racc は LALR(1) パーサジェネレータです。
  yacc の Ruby 版に相当します。

== 必要環境

  *  Ruby 2.5 以降

== インストール

  gem インストール:

    $ gem install racc

== テスト

  sample/ 以下にいくつか Racc の文法ファイルのサンプルが用意
  してあります。動くのも動かないのもありますが、少なくとも
  calc-ja.y は動くのでこれを処理してみましょう。Racc をインス
  トールしたあと

      $ racc -ocalc.rb calc-ja.y

  として下さい。処理は一瞬から数秒で終わるので、

      $ ruby calc.rb

  を実行してください。ちゃんと動いてますか？

  Racc の文法など詳しいことは doc.ja/ ディレクトリ以下の HTML を
  見てください。


== ライセンス

  このパッケージに付属するファイルの著作権は青木峰郎が保持します。
  ライセンスは Ruby ライセンスです。ただしユーザが書いた規則
  ファイルや、Racc がそこから生成した Ruby スクリプトはその対象
  外です。好きなライセンスで配布してください。


== バグなど

  Racc を使っていてバグらしき現象に遭遇したら、下記のアドレスまで
  メールをください。作者にはバグを修正する義務はありませんがその
  意思はあります。また、そのときはできるだけバグを再現できる文法
  ファイルを付けてください。


                                         青木峰郎(あおきみねろう)
                                              aamine@loveruby.net
                                            http://i.loveruby.net

Owner metadata

Name: The Ruby Programming Language
Login: ruby
Email: info@ruby-lang.org
Kind: organization
Description: Repositories related to the Ruby Programming language
Website: https://www.ruby-lang.org/
Location: Matsue, Japan
Twitter:
Company:
Icon url: https://avatars.githubusercontent.com/u/210414?v=4
Repositories: 171
Last ynced at: 2023-04-09T03:40:20.875Z
Profile URL: https://github.com/ruby

GitHub Events

Total

Delete event: 15
Pull request event: 40
Fork event: 2
Issues event: 7
Watch event: 16
Issue comment event: 10
Push event: 29
Pull request review event: 9
Pull request review comment event: 5
Create event: 15

Last Year

Delete event: 15
Pull request event: 25
Issues event: 3
Watch event: 7
Issue comment event: 4
Push event: 21
Pull request review comment event: 3
Pull request review event: 5
Create event: 15

Committers metadata

Last synced: 2 days ago

Total Commits: 829
Total Committers: 50
Avg Commits per committer: 16.58
Development Distribution Score (DDS): 0.59

Commits in past year: 38
Committers in past year: 4
Avg Commits per committer in past year: 9.5
Development Distribution Score (DDS) in past year: 0.263

Name	Email	Commits
aamine	a**e@1**8	340
Hiroshi SHIBATA	h**t@r**g	124
Nobuyoshi Nakada	n**u@r**g	70
Aaron Patterson	a**n@g**m	68
dependabot[bot]	4****]	30
Alex Dowad	a**g@g**m	26
ydah	t**2@g**m	25
Charles Oliver Nutter	h**s@h**m	21
yui-knk	s**a@g**m	16
Ryan Davis	r**y@z**m	12
Mike Dalessio	m**o@g**m	9
Johnny Willemsen	j**n@r**l	8
Eric Hodel	d**n@s**t	7
Olle Jonsson	o**n@g**m	7
Zachary Scott	z**y@z**t	6
Benoit Daloze	e**p@g**m	5
Marc-Andre Lafortune	g**b@m**a	5
NARUSE, Yui	n**e@a**p	5
zzak	z**k@b**e	4
knu	k**u@1**8	3
Yusuke Endoh	m**e@r**g	3
Akim Demaille	a**e@g**m	2
Jean Boussier	j**r@g**m	2
Jeremy Evans	c**e@j**t	2
Koichi ITO	k**o@g**m	2
Thomas E. Enebo	t**o@g**m	2
hkdnet	s**e@g**m	2
卜部昌平	s**i@r**g	1
stomar	s**r@b**e	1
pavel	p**y@e**z	1
and 20 more...

Committer domains:

Issue and Pull Request metadata

Last synced: 6 days ago

Total issues: 39
Total pull requests: 188
Average time to close issues: 9 months
Average time to close pull requests: 23 days
Total issue authors: 30
Total pull request authors: 31
Average comments per issue: 2.51
Average comments per pull request: 0.61
Merged pull request: 170
Bot issues: 0
Bot pull requests: 31

Past year issues: 1
Past year pull requests: 42
Past year average time to close issues: 10 days
Past year average time to close pull requests: about 23 hours
Past year issue authors: 1
Past year pull request authors: 4
Past year average comments per issue: 0.0
Past year average comments per pull request: 0.1
Past year merged pull request: 34
Past year bot issues: 0
Past year bot pull requests: 29

More stats: https://issues.ecosyste.ms/repositories/lookup?url=https://github.com/ruby/racc

Top Issue Authors

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Top Pull Request Authors

dependabot[bot] (31)
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headius (3)
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github_actions (30)

Package metadata

Total packages: 21
Total downloads:
- rubygems: 1,358,473,620 total
Total docker downloads: 7,521,782,166
Total dependent packages: 151 (may contain duplicates)
Total dependent repositories: 244,046 (may contain duplicates)
Total versions: 132
Total maintainers: 8

gem.coop: racc

Racc is an LALR(1) parser generator. It is written in Ruby itself, and generates Ruby program. NOTE: Ruby 1.8.x comes with Racc runtime module. You can run your parsers generated by racc 1.4.x out of the box.

Homepage: https://github.com/ruby/racc
Documentation: http://www.rubydoc.info/gems/racc/
Licenses: Ruby,BSD-2-Clause
Latest release: 1.8.1 (published almost 2 years ago)
Last Synced: 2026-05-22T15:00:27.805Z (2 days ago)
Versions: 43
Dependent Packages: 0
Dependent Repositories: 0
Downloads: 679,355,940 Total
Docker Downloads: 3,760,891,083
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Maintainers (6)
- hsbt
- tenderlove
- drbrain
- flavorjones
- zenspider
- yui-knk

rubygems.org: racc

Homepage: https://github.com/ruby/racc
Documentation: http://www.rubydoc.info/gems/racc/
Licenses: Ruby,BSD-2-Clause
Latest release: 1.8.1 (published almost 2 years ago)
Last Synced: 2026-05-22T04:30:46.241Z (3 days ago)
Versions: 43
Dependent Packages: 151
Dependent Repositories: 244,046
Downloads: 679,115,346 Total
Docker Downloads: 3,760,891,083
Rankings:
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- Dependent packages count: 0.248%
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Maintainers (6)
- hsbt
- tenderlove
- drbrain
- flavorjones
- zenspider
- yui-knk

proxy.golang.org: github.com/ruby/racc

Homepage:
Documentation: https://pkg.go.dev/github.com/ruby/racc#section-documentation
Licenses: other
Latest release: v1.8.1 (published almost 2 years ago)
Last Synced: 2026-05-20T15:37:57.715Z (4 days ago)
Versions: 22
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Rankings:
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alpine-edge: ruby-racc-doc

LALR(1) parser generator for Ruby (ri docs)

Homepage: https://github.com/ruby/racc
Licenses: BSD-2-Clause AND Ruby
Latest release: 1.8.1-r0 (published about 1 year ago)
Last Synced: 2026-04-01T03:07:26.264Z (about 2 months ago)
Versions: 2
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Maintainers (1)
- jakub@jirutka.cz

alpine-edge: ruby-racc

LALR(1) parser generator for Ruby

Homepage: https://github.com/ruby/racc
Licenses: BSD-2-Clause AND Ruby
Latest release: 1.8.1-r0 (published about 1 year ago)
Last Synced: 2026-03-23T07:07:01.479Z (2 months ago)
Versions: 2
Dependent Packages: 0
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Rankings:
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Maintainers (1)
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gem.coop: ed-precompiled_racc

Homepage: https://github.com/ruby/racc
Documentation: http://www.rubydoc.info/gems/ed-precompiled_racc/
Licenses: Ruby,BSD-2-Clause
Latest release: 1.8.1 (published 7 months ago)
Last Synced: 2026-05-21T03:01:21.516Z (4 days ago)
Versions: 3
Dependent Packages: 0
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Downloads: 1,167 Total
Rankings:
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- Average: 33.331%
- Downloads: 99.993%
Maintainers (1)
- edouardchin

rubygems.org: ed-precompiled_racc

Homepage: https://github.com/ruby/racc
Documentation: http://www.rubydoc.info/gems/ed-precompiled_racc/
Licenses: Ruby,BSD-2-Clause
Latest release: 1.8.1 (published 7 months ago)
Last Synced: 2026-05-20T15:37:56.384Z (4 days ago)
Versions: 3
Dependent Packages: 0
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Downloads: 1,167 Total
Rankings:
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- Average: 50.147%
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Maintainers (1)
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ubuntu-24.10: racc

Homepage: https://github.com/ruby/racc
Licenses:
Latest release: 1.6.2-1ubuntu1 (published 3 months ago)
Last Synced: 2026-03-09T16:05:37.348Z (3 months ago)
Versions: 1
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Rankings:
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alpine-v3.23: ruby-racc-doc

LALR(1) parser generator for Ruby (ri docs)

Homepage: https://github.com/ruby/racc
Licenses: BSD-2-Clause AND Ruby
Latest release: 1.8.1-r0 (published about 1 year ago)
Last Synced: 2026-04-07T21:02:38.401Z (about 2 months ago)
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Maintainers (1)
- jakub@jirutka.cz

alpine-v3.22: ruby-racc

LALR(1) parser generator for Ruby

Homepage: https://github.com/ruby/racc
Licenses: BSD-2-Clause AND Ruby
Latest release: 1.8.1-r0 (published about 1 year ago)
Last Synced: 2026-04-01T01:53:05.432Z (about 2 months ago)
Versions: 1
Dependent Packages: 0
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Rankings:
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Maintainers (1)
- jakub@jirutka.cz

alpine-v3.21: ruby-racc-doc

LALR(1) parser generator for Ruby (ri docs)

Homepage: https://github.com/ruby/racc
Licenses: BSD-2-Clause AND Ruby
Latest release: 1.7.3-r0 (published over 2 years ago)
Last Synced: 2026-04-01T01:46:36.604Z (about 2 months ago)
Versions: 1
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Maintainers (1)
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alpine-v3.21: ruby-racc

LALR(1) parser generator for Ruby

Homepage: https://github.com/ruby/racc
Licenses: BSD-2-Clause AND Ruby
Latest release: 1.7.3-r0 (published over 2 years ago)
Last Synced: 2026-04-01T01:49:58.532Z (about 2 months ago)
Versions: 1
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Maintainers (1)
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debian-12: racc

Homepage: https://github.com/ruby/racc
Documentation: https://packages.debian.org/bookworm/racc
Licenses:
Latest release: 1.6.2-1 (published 3 months ago)
Last Synced: 2026-03-13T22:46:49.058Z (2 months ago)
Versions: 1
Dependent Packages: 0
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Rankings:
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alpine-v3.20: ruby-racc

LALR(1) parser generator for Ruby

Homepage: https://github.com/ruby/racc
Licenses: BSD-2-Clause AND Ruby
Latest release: 1.7.3-r0 (published over 2 years ago)
Last Synced: 2026-04-01T02:07:15.099Z (about 2 months ago)
Versions: 1
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Rankings:
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- Average: 100%
Maintainers (1)
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alpine-v3.20: ruby-racc-doc

LALR(1) parser generator for Ruby (ri docs)

Homepage: https://github.com/ruby/racc
Licenses: BSD-2-Clause AND Ruby
Latest release: 1.7.3-r0 (published over 2 years ago)
Last Synced: 2026-04-01T02:08:16.439Z (about 2 months ago)
Versions: 1
Dependent Packages: 0
Dependent Repositories: 0
Rankings:
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- Average: 100%
Maintainers (1)
- jakub@jirutka.cz

alpine-v3.23: ruby-racc

LALR(1) parser generator for Ruby

Homepage: https://github.com/ruby/racc
Licenses: BSD-2-Clause AND Ruby
Latest release: 1.8.1-r0 (published about 1 year ago)
Last Synced: 2026-04-07T21:02:33.546Z (about 2 months ago)
Versions: 1
Dependent Packages: 0
Dependent Repositories: 0
Rankings:
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Maintainers (1)
- jakub@jirutka.cz

alpine-v3.22: ruby-racc-doc

LALR(1) parser generator for Ruby (ri docs)

Homepage: https://github.com/ruby/racc
Licenses: BSD-2-Clause AND Ruby
Latest release: 1.8.1-r0 (published about 1 year ago)
Last Synced: 2026-04-01T01:56:58.973Z (about 2 months ago)
Versions: 1
Dependent Packages: 0
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Rankings:
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Maintainers (1)
- jakub@jirutka.cz

ubuntu-23.04: racc

Homepage: https://github.com/ruby/racc
Licenses:
Latest release: 1.6.2-1 (published 3 months ago)
Last Synced: 2026-03-11T14:08:41.970Z (2 months ago)
Versions: 1
Dependent Packages: 0
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Rankings:
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- Average: 100%

debian-13: racc

Homepage: https://github.com/ruby/racc
Documentation: https://packages.debian.org/trixie/racc
Licenses:
Latest release: 1.8.1-1 (published 3 months ago)
Last Synced: 2026-03-14T17:08:27.449Z (2 months ago)
Versions: 1
Dependent Packages: 0
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- Average: 100%

ubuntu-24.04: racc

Homepage: https://github.com/ruby/racc
Licenses:
Latest release: 1.6.2-1 (published 4 months ago)
Last Synced: 2026-03-06T14:24:45.471Z (3 months ago)
Versions: 1
Dependent Packages: 0
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Rankings:
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ubuntu-23.10: racc

Homepage: https://github.com/ruby/racc
Licenses:
Latest release: 1.6.2-1 (published 3 months ago)
Last Synced: 2026-03-14T02:16:04.138Z (2 months ago)
Versions: 1
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Dependent Repositories: 0
Rankings:
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Dependencies

Gemfile rubygems

bundler >= 0 development
rake >= 0 development
rake-compiler >= 0 development
test-unit >= 0 development

.github/workflows/push_gem.yml actions

actions/checkout 0c366fd6a839edf440554fa01a7085ccba70ac98 composite
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rubygems/release-gem 1c162a739e8b4cb21a676e97b087e8268d8fc40b composite
step-security/harden-runner e3f713f2d8f53843e71c69a996d56f51aa9adfb9 composite

.github/workflows/gh-pages.yml actions

actions/checkout v6.0.2 composite
actions/configure-pages v5 composite
actions/deploy-pages v4 composite
actions/upload-pages-artifact v4 composite
ruby/setup-ruby d5126b9b3579e429dd52e51e68624dda2e05be25 composite

.github/workflows/test.yml actions

actions/checkout v4 composite
ruby/setup-ruby v1 composite

racc.gemspec rubygems

Score: 33.15774157043397