This is a port of Esprima to Low-Level JavaScript for research and testing purposes. I made this mainly to test out LLJS, so there may be bugs... Use at your own risk!
It turned out to not be any faster than the original Esprima at allocation (although it is close to the same speed), but it does perform well during traversal of the AST.
Esprima (esprima.org) is an educational ECMAScript (also popularly known as JavaScript) parsing infrastructure for multipurpose analysis. It is also written in ECMAScript.
Esprima is created and maintained by Ariya Hidayat (Twitter: @ariyahidayat), with the help of many contributors.
- Supports ECMAScript 5.1 with an experimental branch for ES.Next/Harmony
- Sensible format for the abstract syntax tree (AST), compatible with Mozilla Parser API
- Heavily tested (> 500 unit tests with solid 100% code coverage)
- Optional tracking of syntax node location (index-based and line-column)
- Blazing fast, up to 3x faster than
UglifyJS
parse-js(speed comparison)
Esprima runs on web browsers (IE 6+, Firefox 1+, Safari 3+, Chrome 1+, Konqueror 4.6+, Opera 8+) as well as Node.js.
- Smart editing: outline view, content assist
- Source code modification: Esmorph, Code Painter, node-falafel
- Code coverage analysis: node-cover, coveraje, CoverJS
- Code generation: escodegen
- Documentation tool: JFDoc, JSDuck
- Source-to-source compilation: Marv, LLJS, Harmonizr
Feedback and contribution are welcomed!
Copyright (C) 2012, 2011 Ariya Hidayat and other contributors.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
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Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
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Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
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