Description:
LALR(1) parser generator like yacc or bison
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Type: Formula
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Latest Version: 3.51.3@0
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Tracked Since: Dec 28, 2025
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Links:
Homepage |
formulae.brew.sh
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Category: Developer tools
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Tags:
parser-generator
compiler
c
c++
development
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Install:
brew install lemon
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About:
Lemon is a specialized LALR(1) parser generator designed to be robust, efficient, and easy to integrate into C and C++ projects. It generates a complete, self-contained C source file for the parsing engine, eliminating external runtime dependencies. This tool is a modern, public-domain alternative to traditional utilities like Yacc and Bison.
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Key Features:
- Generates highly optimized, dependency-free C code
- Supports both LALR(1) and GLR parsing algorithms
- Simple, clean grammar syntax with integrated C code actions
- Public domain license for unrestricted use
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Use Cases:
- Building custom programming language interpreters or compilers
- Creating robust parsers for configuration files and data formats
- Adding complex command-line parsing to C/C++ applications
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Alternatives:
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Bison
– Bison is a more feature-rich GNU project, while Lemon is public domain and known for its simplicity and zero-dependency output.
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Yacc
– The classic Unix utility; Lemon is a modern successor with a different syntax and focus on embedded use.
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Version |
Rev |
Change |
Commit |
| Mar 16, 2026 10:16am |
3.51.3 |
0 |
VERSION_BUMP |
76a95188 |
| Mar 11, 2026 1:41pm |
3.52.0 |
0 |
VERSION_BUMP |
06937d7d |
| Jan 9, 2026 9:59pm |
3.51.2 |
0 |
VERSION_BUMP |
794bddf9 |
| Sep 15, 2025 3:54pm |
3.50.4 |
0 |
VERSION_BUMP |
d0e076f7 |
| Oct 23, 2024 10:21am |
3.47.0 |
0 |
VERSION_BUMP |
bffd1257 |
| Sep 14, 2024 2:01pm |
3.46.1 |
0 |
VERSION_BUMP |
44f31b57 |
| Aug 15, 2024 9:07pm |
3.46.1 |
0 |
VERSION_BUMP |
9f256e40 |
| Apr 16, 2024 10:22pm |
3.45.3 |
0 |
VERSION_BUMP |
0861999b |
| Jan 30, 2024 8:23pm |
3.45.1 |
0 |
VERSION_BUMP |
44b44ef7 |
| Jan 15, 2024 7:02pm |
3.45.0 |
0 |
VERSION_BUMP |
a1ae920d |
| Nov 28, 2023 12:49am |
3.44.2 |
0 |
VERSION_BUMP |
3a497bbe |
| Nov 26, 2023 12:47am |
3.44.1 |
0 |
VERSION_BUMP |
993e20ef |
| Nov 26, 2023 12:04am |
3.44.0 |
0 |
VERSION_BUMP |
7e8d55fa |
| Nov 25, 2023 7:21pm |
3.44.1 |
0 |
VERSION_BUMP |
c790f5a8 |
| Nov 3, 2023 6:19pm |
3.44.0 |
0 |
VERSION_BUMP |
632444f1 |
| Aug 28, 2023 5:51am |
3.43.0 |
0 |
VERSION_BUMP |
ffc1bead |
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