jsasm

A Clojure tool for emitting JS

Usage

'jsasm.ast/emit-tokens takes a sequence of tokens and returns
a javascript string.

The syntax of the ast is as follows:

token    = lit | array | object | project | call | function |        
           if | while | enum | throw | try | operator |      
           var | return | break    
tokens   = [token*]    
lit      = [:LIT (symbol | number | string)]     
array    = [:ARRAY tokens]     
entry    = [:ENTRY token token]               ; foo : bar    
entries  = [entry*]    
object   = [:OBJECT entries]                  ; { foo : bar, ... }    
function = [:FUNCTION tokens tokens]          ; function ( ... ) { ... }     
project  = [:PROJECT token token]             ; foo[bar]    
call     = [:CALL tokens]                     ; foo(...) { ... }    
if       = [:IF token tokens tokens?]    
while    = [:WHILE token tokens]                  
enum     = [:ENUM token token tokens]    
    
throw    = [:THROW token]    
catch    = [:CATCH token tokens]             
finally  = [:FINALLY tokens]    
try      = [:TRY tokens catch finally?]    
    
operator = [:OPERATOR symbol [token+]] ; =, +, <, ==    
var      = [:VAR tokens]    
return   = [:RETURN token]    
break    = [:BREAK]    

Some helpers for creating tokens live in jsasm.ast.

The ast is awkward to write by hand, but is a convenient compile target. For an example of a simple compiler with clojure-like syntax
that uses jsasm as a backend see Calliope.

Installation

[jsasm "1.0.0-SNAPSHOT"]

License

Copyright (C) 2010 Andrew Boekhoff

Distributed under the Eclipse Public License, the same as Clojure.