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Re2c

re2c is a free and open-source lexer generator for C, C++, D, Go, Haskell, Java, JavaScript, OCaml, Python, Rust, V and Zig. It compiles declarative regular expression specifications to deterministic finite automata. Originally written by Peter Bumbulis and described in his paper, re2c was put in public domain and has been since maintained by volunteers.…

Features, Overview & Philosophy

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Explore the main themes, entities and connections around Re2c. Start with the topic map, then use the sections below for research and deeper semantic analysis.

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Features

POSIXASCIIUTF-8UTF-16UTF-32
11 related topics

Overview

Free and open-sourceLexer generatorC++GoHaskell
19 related topics

Philosophy

Finite-state machineJumpsDFA minimization
3 related topics

Syntax

Flex
1 related topics

Key facts & relationships

High-confidence facts extracted from structured source data. Use them as anchors for further research.

License
Public domain
Original author
Peter Bumbulis
Release
around 1994; 32 years ago (1994)
Repository
github.com/skvadrik/re2c
Stable release
4.3 / 30 June 2025
Type
Lexical analyzer generator

Topics to explore

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Overview

Philosophy

Features

Syntax

  • Flex Flex (lexical analyser generator)

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

Map overview Semantic statistics

Re2c

Nodes39
Edges38
Triples70
Avg. degree1.95
Density0.051282
Components1

How this topic connects Entity context

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Re2c

Top relations

related to Features · 24
Re2c → Additionally, ASCII, Besides, Data, Debugging, DFA, DOT, EBCDIC, Encoding, Flexible, Input, NFA, POSIX-compliant, Self-validation, Start, Storable, Submatch, TDFA, The, UCS-2
related to Syntax · 12
Re2c → CODE, CONFIG, Configurations, Definitions, Each, Flex, For, REGEXP, Rules, There, VALUE, WhenREGEXPmatches
related to Regular expressions · 8
Re2c → Flex, POSIX-style, Rfollowed, RorSR, Salternative, Sconcatenation, Sdifference, Slookahead
related to Example · 7
Re2c → Given, Here, It, See, The, There, Which
related to Philosophy · 5
Re2c → Another, DFA, Instead, Moreover, The
License · 1
Re2c → Public domain
Original author · 1
Re2c → Peter Bumbulis
Release · 1
Re2c → around 1994; 32 years ago (1994)
Repository · 1
Re2c → github.com/skvadrik/re2c
Stable release · 1
Re2c → 4.3 / 30 June 2025

Important terminology Word statistics

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

program code lexer generator input regular used dfa lexers generated example number interface rules expression implementation see also website peter

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Re2cLicensePublic domain1.00infobox
Re2cOriginal authorPeter Bumbulis1.00infobox
Re2cReleasearound 1994; 32 years ago (1994)1.00infobox
Re2cRepositorygithub.com/skvadrik/re2c1.00infobox
Re2cStable release4.3 / 30 June 20251.00infobox
Re2cTypeLexical analyzer generator1.00infobox
Re2cWebsitere2c.org1.00infobox
Re2cis afree and open-source lexer generator for C0.90text
PHPinstance ofIt is the lexer generator adopted by projects0.80text
SpamAssassininstance ofIt is the lexer generator adopted by projects0.80text
Ninja build systeminstance ofIt is the lexer generator adopted by projects0.80text
othersinstance ofIt is the lexer generator adopted by projects0.80text

Related concept clusters Concept neighborhoods

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    Connections between topic areas Semantic bridges

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    Min side: 3
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