webapi-eca/js-coffee/dynamic-modules.js

// Generated by CoffeeScript 1.6.3
/*

Dynamic Modules
===============
> Compiles CoffeeScript modules and loads JS modules in a VM, together
> with only a few allowed node.js modules.
*/


(function() {
  var cs, exports, needle, vm,
    _this = this;

  vm = require('vm');

  needle = require('needle');

  cs = require('coffee-script');

  /*
  Module call
  -----------
  Initializes the dynamic module handler.
  
  @param {Object} args
  */


  exports = module.exports = function(args) {
    _this.log = args.logger;
    return module.exports;
  };

  /*
  Try to run a JS module from a string, together with the
  given parameters. If it is written in CoffeeScript we
  compile it first into JS.
  
  @public compileString ( *src, id, params, lang* )
  @param {String} src
  @param {String} id
  @param {Object} params
  @param {String} lang
  */


  exports.compileString = function(src, id, params, lang) {
    var answ, err, ret, sandbox;
    answ = {
      code: 200,
      message: 'Successfully compiled'
    };
    src = "'use strict;'\n" + src;
    if (lang === '0') {
      try {
        src = cs.compile(src);
      } catch (_error) {
        err = _error;
        answ.code = 400;
        answ.message = 'Compilation of CoffeeScript failed at line ' + err.location.first_line;
      }
    }
    sandbox = {
      id: id,
      params: params,
      needle: needle,
      log: _this.log,
      exports: {}
    };
    try {
      vm.runInNewContext(src, sandbox, id + '.vm');
    } catch (_error) {
      err = _error;
      answ.code = 400;
      answ.message = 'Loading Module failed: ' + err.message;
    }
    return ret = {
      answ: answ,
      module: sandbox.exports
    };
  };

}).call(this);