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Replace pegs parser with Esprima

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It preserves comments and text positions, enabling us to do syntax
highlighting. Hopefully.
This commit is contained in:
Jeremy Ruston
2012-03-01 22:47:31 +00:00
parent 470b622bb1
commit f6338d9109
68 changed files with 109553 additions and 8077 deletions
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Esprima ([esprima.org](http://esprima.org)) is an educational
[ECMAScript](http://www.ecma-international.org/publications/standards/Ecma-262.htm)
(also popularly known as [JavaScript](http://en.wikipedia.org/wiki/JavaScript>JavaScript))
parsing infrastructure for multipurpose analysis. It is also written in ECMAScript.
Esprima can be used in a web browser:
<script src="esprima.js"></script>
or in a Node.js application via the package manager:
npm install esprima
Esprima parser output is compatible with Mozilla (SpiderMonkey)
[Parser API](https://developer.mozilla.org/en/SpiderMonkey/Parser_API).
A very simple example:
esprima.parse('var answer=42').body[0].declarations[0].init
produces the following object:
{ type: 'Literal', value: 42 }
Esprima is still in the development, for now please check
[the wiki documentation](http://wiki.esprima.org).
Since it is not comprehensive nor complete, refer to the
[issue tracker](http://issues.esprima.org) for
[known problems](http://code.google.com/p/esprima/issues/list?q=Defect)
and [future plans](http://code.google.com/p/esprima/issues/list?q=Enhancement).
Esprima is supported on [many browsers](http://code.google.com/p/esprima/wiki/BrowserCompatibility):
IE 6+, Firefox 1+, Safari 3+, Chrome 1+, and Opera 8+.
Feedback and contribution are welcomed! Please join the
[mailing list](http://groups.google.com/group/esprima) and read the
[contribution guide](http://code.google.com/p/esprima/wiki/ContributionGuide)
for further info.
### License
Copyright (C) 2012, 2011 [Ariya Hidayat](http://ariya.ofilabs.com/about)
(twitter: [@ariyahidayat](http://twitter.com/ariyahidayat)) and other contributors.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* 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.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.