Search Results for "lexer"
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Showing 77 open source projects for "lexer"
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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. -
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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. -
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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. -
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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). ... -
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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. -
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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. -
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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... -
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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. -
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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. -
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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... -
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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... -
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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... -
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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 -
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...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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...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
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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. ... -
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An LALR(1) and LALR(*) parser generator. Generates parsers up to 140 times the speed of ANTLR parsers, and 1/10th of the size or smaller. Contains the DFA lexer generator, 80% faster than flex lexers. Works with Visual Studio C++. Contains 27 grammars. Parsers build a symbol table. Parsers construct an abstract-syntax tree (AST). Parser are very fast and small. Reads ANTLR and YACC grammars, after making some changes. Accepts advanced EBNF grammar notation. Includes 4 sample projects. ...
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ARTCOMParser
Parser library that uses an EBNF like grammar to generate a parse tree
Parser library that uses an EBNF like grammar to generate a parse tree You can use it to create a quick parser It uses backtracking so it may be slow for some grammar rules -
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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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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. -
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soulng
Lexer and parser generator tool for C++
The SoulNG project contains two tools: a lexical analyzer generator slg and a parser generator spg. The generators and the produced lexical analyzers and parsers use four C++ libraries that are also included in the project. The slg tool takes a .lexer file that contains the description of a lexical analyzer as input and produces C++ source code for a lexical analyzer as output. The produced lexical analyzer is a finite state machine that recognizes patterns described as regular expressions and return corresponding token identifiers to the parser. The spg tool takes .parser files that contain descriptions of parsers as input and produces C++ source code for parser classes as output. ... -
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GEDCOM Lexer Plugin for Notepad++
Syntax highlighting and folding for GEDCOM
Enhances Notepad++ text editor's handling of GEDCOM files. View GEDCOM files with syntax highlighting of: level, xref id, tag, pointer, value and escape tokens. Customize coloration and font styles. Grammar errors are also highlighted. View GEDCOM files in outline mode by folding sections based on line level. -
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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. -
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8cc C Compiler
Compiler for the C programming language
...It was created as a hobby project with the goal of demonstrating how a compiler works internally, making it a valuable resource for learning compiler design. The project includes core components such as a lexer, parser, and preprocessor, allowing users to explore each stage of the compilation process. One of its notable features is its ability to compile itself, showcasing its completeness and serving as a practical example of bootstrapping in compiler development. The code is intentionally written to be concise and readable, making it accessible to developers who want to study compiler internals. ...
