Showing 50 open source projects for "lexer"

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  • 1
    Doctrine Lexer

    Doctrine Lexer

    Base library for a lexer that can be used in Recursive Descent Parsers

    ...The Lexer is responsible for giving you an API to walk across a string one character at a time and analyze the type of each character, value and position of each token in the string. The low level API of the lexer is pretty simple. The setInput($input) option sets the input data to be tokenized. The Lexer is immediately reset and the new input tokenized.
    Downloads: 3 This Week
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  • 2
    LOL HTML

    LOL HTML

    Low output latency streaming HTML parser/rewriter with CSS API

    ...The crate serves as a back-end for the HTML rewriting functionality of Cloudflare Workers, but can be used as a standalone library with a convenient API for a wide variety of HTML rewriting/analysis tasks. The parser switches back to the tag scanner as soon as input leaves the scope of all selector matches. The tag scanner may also sometimes switch the parser to the Lexer - if it requires additional tag information for the parsing feedback simulation. Having two different parser implementations for the same grammar will increase development costs and is error-prone due to implementation inconsistencies. We minimize these risks by implementing a small Rust macro-based DSL which is similar in spirit to Ragel.
    Downloads: 15 This Week
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  • 3
    Boa

    Boa

    Embeddable and experimental Javascript engine written in Rust

    This is an experimental Javascript lexer, parser and interpreter written in Rust. Currently, it has support for some of the language.
    Downloads: 0 This Week
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  • 4
    Red Programming Language

    Red Programming Language

    Red is a next-generation programming language

    Red is a next-generation programming language strongly inspired by Rebol, but with a broader field of usage thanks to its native-code compiler, from system programming to high-level scripting and cross-platform reactive GUI, while providing modern support for concurrency, all in a zero-install, zero-config, single 1MB file! During the work on the low-level parts of the new Red lexer, the need arised for intra-function factorization abilities to keep the lexer code as DRY as possible. Subroutines were introduced to solve that. They act as the GOSUB directive from Basic language. They are defined as a separate block of code inside a function's body and are called like regular functions (but without any arguments). ...
    Downloads: 1 This Week
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  • 5
    Logos

    Logos

    Create ridiculously fast Lexers

    Logos is a lexer generator for Rust, designed to create fast and efficient lexers with minimal code. It leverages Rust's procedural macros to define token patterns, streamlining the process of lexical analysis.​
    Downloads: 0 This Week
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  • 6
    langrocks

    langrocks

    Tools like web browser, computer access and code runner for LLMs

    Langrocks is a programming language experimentation toolkit that enables developers to create, test, and optimize custom programming languages.
    Downloads: 0 This Week
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  • 7
    Automa.jl

    Automa.jl

    A julia code generator for regular expressions

    Automa is a regex-to-Julia compiler. By compiling regex to Julia code in the form of Expr objects, Automa provides facilities to create efficient and robust regex-based lexers, tokenizers and parsers using Julia's metaprogramming capabilities. You can view Automa as a regex engine that can insert arbitrary Julia code into its input-matching process, which will be executed when certain parts of the regex match an input.
    Downloads: 1 This Week
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  • 8
    CCC

    CCC

    Claude Opus 4.6 wrote a dependency-free C compiler in Rust

    Claude’s C Compiler is a remarkable experiment in automated software generation: a full C compiler written from scratch in Rust entirely by an AI model (Claude Opus 4.6) with minimal human intervention, capable of targeting multiple architectures like x86-64, i686, ARM, and RISC-V. The project implements every part of a traditional compiler — the lexer, parser, intermediate representation, optimizer, code generator, assembler, linker, and debug info emitter — without relying on any external toolchain, producing standalone executables in the ELF format. While still early and not fully validated for correctness, it demonstrates the frontier of what sophisticated AI can build in complex, systems-level software domains, including the potential to compile real operating systems and large software projects.
    Downloads: 0 This Week
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  • 9
    gojq

    gojq

    Pure Go implementation of jq

    This is an implementation of jq command written in Go language. You can also embed gojq as a library to your Go products. gojq is purely implemented with Go language and is completely portable. jq depends on the C standard library so the availability of math functions depends on the library. jq also depends on the regular expression library and it makes building scripts complex. gojq implements nice error messages for invalid query and JSON input. The error message of jq is sometimes...
    Downloads: 0 This Week
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  • 10
    re2

    re2

    Alternative to backtracking regular expression engines

    RE2 is a fast, safe, thread-friendly alternative to backtracking regular expression engines like those used in PCRE, Perl, and Python. It is a C++ library. This is the source code repository for RE2, a regular expression library. There is a fair amount of documentation (including code snippets) in the re2.h header file. Unless otherwise noted, the RE2 source files are distributed under the BSD-style license found in the LICENSE file. In POSIX mode, RE2 accepts standard POSIX (egrep) syntax...
    Downloads: 0 This Week
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  • 11
    GraphQL for .NET

    GraphQL for .NET

    This is an implementation of Facebook's GraphQL in .NET

    GraphQL is a query language for your API, and a server-side runtime for executing queries by using a type system you define for your data. GraphQL isn't tied to any specific database or storage engine and is instead backed by your existing code and data. A GraphQL service is created by defining types and fields on those types, then providing functions for each field on each type. All packages generated from this repository come with embedded pdb and support Source Link. If you are having...
    Downloads: 0 This Week
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  • 12
    ...Unlike any other such tool, re2c focuses on generating high efficient code for regular expression matching. As a result this allows a much broader range of use than any traditional lexer.
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    Downloads: 656 This Week
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  • 13
    AndroidLogger

    AndroidLogger

    AndroidLogger is coming back, compatible v7.8 - 8.x Notepad++

    ...Push AndroidLogger.dll under "plugins\" directory of Notepad++ 2. Push AndroidLogger.xml under "plugins\Config\" directory of Notepad++ [Features] 1. A nice lexer for App & Radio Log, and customizable. 2. You can capture log from device! 3. Run cmd or adb cmd fast in Common Cmds! 4. Capture device screenshot easily! 5. A File Explorer for Android Device
    Downloads: 3 This Week
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  • 14
    RE/flex lexical analyzer generator

    RE/flex lexical analyzer generator

    The regex-centric, fast lexical analyzer generator for C++

    A C++ high-performance regex library and Flex-compatible lexical analyzer generator with full Unicode support, new indentation anchors, lazy quantifiers, and many other modern features. Accepts Flex lexer specification syntax and is compatible with Bison/Yacc parsers. Generates reusable source code that is easy to understand. Supports fast scanning of UTF-8/16/32 files, strings, and streams. The reflex scanner generator generates clean C++ lexer class code that is thread-safe. Generates Graphviz files to visualize state machine DFAs. ...
    Downloads: 4 This Week
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  • 15
    Pascal-to-Ada
    ...Recognizes particularities of several Pascal dialects: Turbo/Borland/Delphi (mostly), CodeWarrior, ISO, ISO Extended (a bit). Includes a full ayacc / aflex parser & lexer for Ada 95+ with sources. Mirror: https://github.com/zertovitch/pascal-to-ada
    Downloads: 0 This Week
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  • 16
    alexscript

    alexscript

    Alexscript Polish programming language

    ...You write jesli, funkcja and klasa instead of if, function and class. It's dynamically typed and object-oriented, drawing on Ruby and JavaScript, and it's implemented from scratch in Ruby as a tree-walking interpreter (lexer, parser, AST, evaluator). Distributed via source, Homebrew and Docker: brew tap N3BCKN/alexscript brew install alexscript Documentation & REPL: https://www.alexscript.pl Source: https://github.com/N3BCKN/alexscript Docker: https://hub.docker.com/repository/docker/alexscript/alexscript/general Rosetta Code: https://rosettacode.org/wiki/AlexScript IDE extension: https://marketplace.visualstudio.com/items?...
    Downloads: 4 This Week
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  • 17
    MLton

    MLton

    A whole-program optimizing compiler for Standard ML

    ...In addition, MLton provides a feature rich Standard ML programming environment, with full support for SML97 as given in The Definition of Standard ML (Revised), a number of useful language extensions, a complete implementation of the Standard ML Basis Library, various useful libraries, a simple and fast C foreign function interface, the ML Basis system for programming with source libraries, and tools such as a lexer generator, a parser generator, and a profiler.
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    Downloads: 35 This Week
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  • 18
    ANTLR

    ANTLR

    Parser generator to read, process, or translate structured text

    ANTLR (ANother Tool for Language Recognition) is a powerful parser generator for reading, processing, executing, or translating structured text or binary files. It's widely used to build languages, tools, and frameworks. From a grammar, ANTLR generates a parser that can build and walk parse trees. It’s widely used in academia and industry to build all sorts of languages, tools, and frameworks. Twitter search uses ANTLR for query parsing, with over 2 billion queries a day. The languages for...
    Downloads: 0 This Week
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  • 19
    Downloads: 0 This Week
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  • 20
    KAGSA

    KAGSA

    KAGSA PROGRAMMING LANGUAGE

    ...It has a flexible syntax and allows some things that other languages prohibit, such as using certain symbols in variable names and starting variable names with numbers. KAGSA contains several main components, including a lexer, syntax checker, parser, and compiler. It supports object-oriented programming, iteration, and other features commonly used in programming languages.
    Downloads: 0 This Week
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  • 21

    LR Parser and Lexer Generators: Fortran

    LR parser generator and lexer generator for use in Fortran

    ...An infrastructure to use a generated lexer and parser is therefore included as part of these programs.
    Downloads: 0 This Week
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  • 22
    javalang

    javalang

    Pure Python Java parser and tools

    javalang is a pure Python library for working with Java source code. javalang provides a lexer and parser targeting Java 8. The implementation is based on the Java language spec.
    Downloads: 0 This Week
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  • 23
    Koopa (COBOL) Parser Generator
    This project has moved to GitHub ! The version here at SourceForge will remain for historic purpose. Koopa is a parser generator, made for COBOL. It can handle source files in isolation (no preprocessing required) and doesn't mind the presence of CICS/SQL fragments. The grammar is easily extensible in a way which minimizes the impact on the overall code.
    Downloads: 0 This Week
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  • 24
    Kaleidoscope

    Kaleidoscope

    Haskell LLVM JIT Compiler Tutorial

    This repository is a Haskell port of the classic LLVM “Kaleidoscope” tutorial that walks you through building a tiny programming language from scratch. It covers the complete pipeline: tokenizing and parsing a simple, expression-oriented language, constructing an AST, and generating LLVM IR with a JIT so you can execute code interactively. Along the way it adds language features like user-defined functions, conditionals, loops, and operator precedence, demonstrating how each addition impacts...
    Downloads: 0 This Week
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  • 25

    lexamples

    External lexer package for Notepad++

    Improved lexer for Makefiles. Improved lexer for MIB/ASN.1 files.
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    Downloads: 30 This Week
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