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Pure ruby javascript parser and interpreter.

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README.rdoc

RKelly

DESCRIPTION

The RKelly library will parse JavaScript and return a parse tree.

Example

##
# Iterate over and modify a JavaScript AST.  Then print the modified
# AST as JavaScript.
require 'rkelly'

parser = RKelly::Parser.new
ast    = parser.parse(
  "for(var i = 0; i < 10; i++) { var x = 5 + 5; }"
)

ast.each do |node|
  node.value  = 'hello' if node.value == 'i'
  node.name   = 'hello' if node.respond_to?(:name) && node.name == 'i'
end
puts ast.to_ecma # => awesome javascript

Acknowledgments

The original javascript parser was was taken from rbnarcissus written by Paul Sowden. Thanks Paul!

http://idontsmoke.co.uk/2005/rbnarcissus/

The current parser was ported from WebKit. Thank you WebKit team!

License

The MIT License

Copyright © 2007, 2008, 2009 Aaron Patterson, John Barnette

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE

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