Brandon Mills 5552e866f9 Support rest parameters
http://wiki.ecmascript.org/doku.php?id=harmony:rest_parameters
The final parameter to a function is a rest parameter if it is
prefixed by "...". FunctionExpression and FunctionDeclaration
nodes have a new "rest" property that is null if there is no
rest parameter, or contains an Identifer for the parameter.
https://developer.mozilla.org/en-US/docs/SpiderMonkey/Parser_API#Functions

Implemented by adding a new token, `_ellipsis`, which consists of
three dots. Modified the body of parseFunction to allow a single
rest parameter at the end of an argument list. Both the token and
the rest parameter require `options.ecmaVersion` >= 6, otherwise
three dots are tokenized as three dots.
2014-05-08 07:46:47 +02:00
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