Libraries and tools/HJS

Javascript - The World's Most Misunderstood Programming Language? [1]

A Javascript [2] parser using Happy and Alex. It will parse the grammer detailed in ECMA-262 with some additions from [3] to support the parsing of specific test cases.

Possible applications of a Javascript interpreter:

• Provide basis for experimenting with monadic interpreters and the addition of things like Software Transactional Memory to a 'mainstream language'
• Basis for other 'large' language parsers
• Embed Javascript in applications and application servers (such as HAppS)

Installing

Comes as a basic Cabal package [4]. If you do change the parser or lexer file you will need to manually run Alex and Happy *and* run FixHappy on the JavaScriptParser.hs file. This will add an 'action' argument to lexer call; this is a 'hack' to get parsing of regular expressions to work.

Todo

• Extend scope of interpreter to all statements
• Include function definition and calls
• Include objects
• Include built in objects and functions