Janus

This is a small parser that allows the following JavaScript expressions:

• expr == expr
• expr != expr
• expr >= expr
• expr > expr
• expr <= expr
• expr < expr
• expr || expr
• expr && expr
• ( expr )
• variable
• 3
• -4
• '"There", he said.'
• "\"There\", he said."

and then returns a namespaced javascript expression (foo will become JANUS.foo)

Requirements

• node.js v0.8.2 (might work with other versions)
• Jison v0.4.2, installing locally is fine

Notes

• The JS part "mocks" variable binding by assuming Math.PI for all variables. The tests reflect this.
• the Makefile expects a jison checkout (commit 40d7bf69e1d83d33e281efb73c8d0c28bcc100df works) at ../jison (used for the php port)

Thanks

• Jison for being awesome
• Obeliks for fixing the last parser bug :P

License

BSD