PEQ - JavaScript Parsing Expressions Query library

This library aims to provide a parser generator functionality of PEG.js but in a way where your constructed grammar is a parser itself instead of generating some human unreadable code. Like with jQuery you can query HTML DOM elements, with PEQ provided matchers you can query a string and transform it to any other data structure.

Usage

Installation

npm i peq

Usage in Node.js

const {grammar, one, oneOf, all, any, not, optional, oneOrMore} = require("peq");

console.log(all([`"`, {name: 'text', matcher: any(/[a-z]/) }, `"`], (all, {text}) => text.join(''))(`"asd"`));
// ^ this will output ['asd', '']

As there's still no more documentation yet, please check examples folder

ToDo

• [x] Setup CI
• [x] Add examples in code
• [ ] Add simple usage documentation
• [ ] Research if there's any missing quantifiers
• [ ] Add more human readable CS theory to documentation
• [ ] Try more grammars
• [ ] Convert code to TypeScript

Contribution and issues

Just open a ticket in Github

Licence

This work is licensed under Apache 2.0 open source license.