mold-js/Mold/Core/VM.js

MoldJS structure and pattern framework commandline interface

"use strict";
//!info transpiled
/**
 * @module Mold.Core.VM
 * @description runs a new Mold instance in a sandbox 
 */
Seed({
		type : "module",
	},
	function(modul){
		var instanceCount = 1; 

		var MoldVM = function(conf){
			conf = conf || {};

			this.sandbox = {
				global : { 
					global : {},
					vmInstance : instanceCount 
				},
				console : console
			}

			if(conf.policy){
				this.sandbox = {};

				if(conf.policy.allowedModuls && conf.policy.allowedModuls.length){
					this.sandbox.require = function(module){
						if(!~conf.policy.allowedModules.indexOf(module)){
							throw new Mold.Errors.PolicyError("Modul access for modul '" + module + "' denied! [Mold.Core.VM]");
						}
						return require.apply(this, arguments);
					}
				}
			}
			instanceCount++;
			
			Mold.copyGlobalProperties(this.sandbox);

			this.moldPath = conf.moldPath || 'Mold.js',
			this.confPath = conf.configPath || '',
			this.confName = conf.configName || 'mold.json'
			this.disableDependencyErrors = conf.disableDependencyErrors || false
			this.stopSeedExecuting = conf.stopSeedExecuting || false
			this.stopLoadingMainSeeds = conf.stopLoadingMainSeeds || false

			this.sandbox.process.argv = [
				'config-path',  this.confPath,
				'config-name', this.confName,
				'use-one-config', true,
				'disable-dependency-errors', this.disableDependencyErrors,
				'stop-seed-executing', this.stopSeedExecuting,
				'stop-loading-main-seeds', this.stopLoadingMainSeeds
			];

			this.vm = require('vm');
			this.fs = require('fs');
			this.context = new this.vm.createContext(this.sandbox);

			//load core
			var moldJsPath = (Mold.Core.Config.search('config-path')) ? Mold.Core.Config.search('config-path') + this.moldPath :  this.moldPath;
			var data = this.fs.readFileSync(moldJsPath);

			var moldScript = new this.vm.Script(data);
  			moldScript.runInContext(this.context, { filename : "Mold.Core.VM" });
  			this.Mold = this.sandbox.global.Mold;
		}

		MoldVM.prototype = {
			setConf : function(conf){
				this.Mold.Core.Config.overwrite(conf);
			}
		}

		modul.exports = MoldVM;
	}
)