Yes I wrote my interpreter to support just this. In my use case the
host objects execute Haskell code in a monad YQLM (StateT YQL IO) and
this works fine.
2014-12-08 22:59 GMT+10:00 Tobias Dammers
I'm kind of fiddling with solving the same (almost) problem, but since you seem to have done most of the heavy lifting already, I'd like to know whether your implementation could fit my needs.
Specifically, my use case is that I want to use JavaScript as a scripting language for a host application written in Haskell; this could be a game, or a CMS/blogging platform, or anything else that needs scripting; one of the must-have requirements is to parametrize the interpreter over arbitrary monads, such that it can be sandboxed into whatever monad stack you need to script over.
On Sun, Dec 07, 2014 at 03:48:47PM +1000, Fabian Bergmark wrote:
I have been implementing an ECMA-262 (Javascript) interpreter over the last few weeks. I have been following http://www.ecma-international.org/ecma-262/5.1 and tried to keep my implementation as close to the specification as possible.
The code can be found here https://github.com/fabianbergmark/ECMA-262
So far I have implemented the core language, but has yet to write all the specification functions (Array.splice, String.substring etc.). Before I do this and release it on hackage, I would appreciate feedback on my implementation.
The issues I see at the time are:
* The parser is slow for deeply nested code * Strict mode is not implemented * Interpret.hs is ~ 6k lines * SubType.hs uses IncoherentInstances, and a better implementation would be nice. At the moment it works but for one case.
To test the code, install the cabal package and run ecma262 on a .js file. One host object, console.log is provided and prints to stdout.
Fabian Bergmark _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
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