Plato - dojo/_base/loader.js

define(["./kernel", "../has", "require", "module", "../json", "./lang", "./array"], function(dojo, has, require, thisModule, json, lang, array) {
	// module:
	//		dojo/_base/loader

//		This module defines the v1.x synchronous loader API.

// signal the loader in sync mode...
	//>>pure-amd

if (!has("dojo-loader")){
		console.error("cannot load the Dojo v1.x loader with a foreign loader");
		return 0;
	}

has.add("dojo-fast-sync-require", 1);

var makeErrorToken = function(id){
			return {src:thisModule.id, id:id};
		},

slashName = function(name){
			return name.replace(/\./g, "/");
		},

buildDetectRe = /\/\/>>built/,

dojoRequireCallbacks = [],
		dojoRequireModuleStack = [],

dojoRequirePlugin = function(mid, require, loaded){
			dojoRequireCallbacks.push(loaded);
			array.forEach(mid.split(","), function(mid){
				var module = getModule(mid, require.module);
				dojoRequireModuleStack.push(module);
				injectModule(module);
			});
			checkDojoRequirePlugin();
		},

checkDojoRequirePlugin = (has("dojo-fast-sync-require") ?
			// This version of checkDojoRequirePlugin makes the observation that all dojoRequireCallbacks can be released
			// when all *non-dojo/require!, dojo/loadInit!* modules are either executed, not requested, or arrived. This is
			// the case since there are no more modules the loader is waiting for, therefore, dojo/require! must have
			// everything it needs on board.
			//
			// The potential weakness of this algorithm is that dojo/require will not execute callbacks until *all* dependency
			// trees are ready. It is possible that some trees may be ready earlier than others, and this extra wait is non-optimal.
			// Still, for big projects, this seems better than the original algorithm below that proved slow in some cases.
			// Note, however, the original algorithm had the potential to execute partial trees,  but that potential was never enabled.
			// There are also other optimization available with the original algorithm that have not been explored.
			function(){
				var module, mid;
				for(mid in modules){
					module = modules[mid];
					if(module.noReqPluginCheck===undefined){
						// tag the module as either a loadInit or require plugin or not for future reference
						module.noReqPluginCheck = /loadInit\!/.test(mid) || /require\!/.test(mid) ? 1 : 0;
					}
					if(!module.executed && !module.noReqPluginCheck && module.injected==requested){
						return;
					}
				}

guardCheckComplete(function(){
					var oldCallbacks = dojoRequireCallbacks;
					dojoRequireCallbacks = [];
					array.forEach(oldCallbacks, function(cb){cb(1);});
				});
		} : (function(){
			// Note: this is the original checkDojoRequirePlugin that is much slower than the algorithm above. However, we know it
			// works, so we leave it here in case the algorithm above fails in some corner case.
			//
			// checkDojoRequirePlugin inspects all of the modules demanded by a dojo/require!<module-list> dependency
			// to see if they have arrived. The loader does not release *any* of these modules to be instantiated
			// until *all* of these modules are on board, thereby preventing the evaluation of a module with dojo.require's
			// that reference modules that are not available.
			//
			// The algorithm works by traversing the dependency graphs (remember, there can be cycles so they are not trees)
			// of each module in the dojoRequireModuleStack array (which contains the list of modules demanded by dojo/require!).
			// The moment a single module is discovered that is missing, the algorithm gives up and indicates that not all
			// modules are on board. dojo/loadInit! and dojo/require! are ignored because there dependencies are inserted
			// directly in dojoRequireModuleStack. For example, if "your/module" module depends on "dojo/require!my/module", then
			// *both* "dojo/require!my/module" and "my/module" will be in dojoRequireModuleStack. Obviously, if "my/module"
			// is on board, then "dojo/require!my/module" is also satisfied, so the algorithm doesn't check for "dojo/require!my/module".
			//
			// Note: inserting a dojo/require!<some-module-list> dependency in the dojoRequireModuleStack achieves nothing
			// with the current algorithm; however, having such modules present makes it possible to optimize the algorithm
			//
			// Note: prior versions of this algorithm had an optimization that signaled loaded on dojo/require! dependencies
			// individually (rather than waiting for them all to be resolved). The implementation proved problematic with cycles
			// and plugins. However, it is possible to reattach that strategy in the future.

// a set from module-id to {undefined | 1 | 0}, where...
			//	 undefined => the module has not been inspected
			//	 0 => the module or at least one of its dependencies has not arrived
			//	 1 => the module is a loadInit! or require! plugin resource, or is currently being traversed (therefore, assume
			//		  OK until proven otherwise), or has been completely traversed and all dependencies have arrived

var touched,
			traverse = function(m){
				touched[m.mid] = 1;
				for(var t, module, deps = m.deps || [], i= 0; i<deps.length; i++){
					module = deps[i];
					if(!(t = touched[module.mid])){
						if(t===0 || !traverse(module)){
							touched[m.mid] = 0;
							return false;
						}
					}
				}
				return true;
			};

return function(){
				// initialize the touched hash with easy-to-compute values that help short circuit recursive algorithm;
				// recall loadInit/require plugin modules are dependencies of modules in dojoRequireModuleStack...
				// which would cause a circular dependency chain that would never be resolved if checked here
				// notice all dependencies of any particular loadInit/require plugin module will already
				// be checked since those are pushed into dojoRequireModuleStack explicitly by the
				// plugin...so if a particular loadInitPlugin module's dependencies are not really
				// on board, that *will* be detected elsewhere in the traversal.
				var module, mid;
				touched = {};
				for(mid in modules){
					module = modules[mid];
					if(module.executed || module.noReqPluginCheck){
						touched[mid] = 1;
					}else{
						if(module.noReqPluginCheck!==0){
							// tag the module as either a loadInit or require plugin or not for future reference
							module.noReqPluginCheck = /loadInit\!/.test(mid) || /require\!/.test(mid) ? 1 : 0;
						}
						if(module.noReqPluginCheck){
							touched[mid] = 1;
						}else if(module.injected!==arrived){
							// not executed, has not arrived, and is not a loadInit or require plugin resource
							touched[mid] = 0;
						}// else, leave undefined and we'll traverse the dependencies
					}
				}
				for(var t, i = 0, end = dojoRequireModuleStack.length; i<end; i++){
					module = dojoRequireModuleStack[i];
					if(!(t = touched[module.mid])){
						if(t===0 || !traverse(module)){
							return;
						}
					}
				}
				guardCheckComplete(function(){
					var oldCallbacks = dojoRequireCallbacks;
					dojoRequireCallbacks = [];
					array.forEach(oldCallbacks, function(cb){cb(1);});
				});
			};
		})()),

dojoLoadInitPlugin = function(mid, require, loaded){
			// mid names a module that defines a "dojo load init" bundle, an object with two properties:
			//
			//	 * names: a vector of module ids that give top-level names to define in the lexical scope of def
			//	 * def: a function that contains some some legacy loader API applications
			//
			// The point of def is to possibly cause some modules to be loaded (but not executed) by dojo/require! where the module
			// ids are possibly-determined at runtime. For example, here is dojox.gfx from v1.6 expressed as an AMD module using the dojo/loadInit
			// and dojo/require plugins.
			//
			// // dojox/gfx:
			//
			//	 define("*loadInit_12, {
			//	   names:["dojo", "dijit", "dojox"],
			//	   def: function(){
			//		 dojo.loadInit(function(){
			//		   var gfx = lang.getObject("dojox.gfx", true);
			//
			//		   //
			//		   // code required to set gfx properties ommitted...
			//		   //
			//
			//		   // now use the calculations to include the runtime-dependent module
			//		   dojo.require("dojox.gfx." + gfx.renderer);
			//		 });
			//	   }
			//	 });
			//
			//	 define(["dojo", "dojo/loadInit!" + id].concat("dojo/require!dojox/gfx/matric,dojox/gfx/_base"), function(dojo){
			//	   // when this AMD factory function is executed, the following modules are guaranteed downloaded but not executed:
			//	   //	"dojox.gfx." + gfx.renderer
			//	   //	dojox.gfx.matrix
			//	   //	dojox.gfx._base
			//	   dojo.provide("dojo.gfx");
			//	   dojo.require("dojox.gfx.matrix");
			//	   dojo.require("dojox.gfx._base");
			//	   dojo.require("dojox.gfx." + gfx.renderer);
			//	   return lang.getObject("dojo.gfx");
			//	 });
			//	})();
			//
			// The idea is to run the legacy loader API with global variables shadowed, which allows these variables to
			// be relocated. For example, dojox and dojo could be relocated to different names by giving a map and the code above will
			// execute properly (because the plugin below resolves the load init bundle.names module with respect to the module that demanded
			// the plugin resource).
			//
			// Note that the relocation is specified in the runtime configuration; relocated names need not be set at build-time.
			//
			// Warning: this is not the best way to express dojox.gfx as and AMD module. In fact, the module has been properly converted in
			// v1.7. However, this technique allows the builder to convert legacy modules into AMD modules and guarantee the codepath is the
			// same in the converted AMD module.
			require([mid], function(bundle){
				// notice how names is resolved with respect to the module that demanded the plugin resource
				require(bundle.names, function(){
					// bring the bundle names into scope
					for(var scopeText = "", args= [], i = 0; i<arguments.length; i++){
						scopeText+= "var " + bundle.names[i] + "= arguments[" + i + "]; ";
						args.push(arguments[i]);
					}
					eval(scopeText);

var callingModule = require.module,
						// the list of modules that need to be downloaded but not executed before the callingModule can be executed
						requireList = [],

// the list of i18n bundles that are xdomain; undefined if none
						i18nDeps,

syncLoaderApi = {
							provide:function(moduleName){
								// mark modules that arrive consequent to multiple provides in this module as arrived since they can't be injected
								moduleName = slashName(moduleName);
								var providedModule = getModule(moduleName, callingModule);
								if(providedModule!==callingModule){
									setArrived(providedModule);
								}
							},
							require:function(moduleName, omitModuleCheck){
								moduleName = slashName(moduleName);
								omitModuleCheck && (getModule(moduleName, callingModule).result = nonmodule);
								requireList.push(moduleName);
							},
							requireLocalization:function(moduleName, bundleName, locale){
								// since we're going to need dojo/i8n, add it to i18nDeps if not already there
								if(!i18nDeps){
									// don't have to map since that will occur when the dependency is resolved
									i18nDeps = ["dojo/i18n"];
								}

// figure out if the bundle is xdomain; if so, add it to the i18nDepsSet
								locale = (locale || dojo.locale).toLowerCase();
								moduleName = slashName(moduleName) + "/nls/" + (/root/i.test(locale) ? "" : locale + "/") + slashName(bundleName);
								if(getModule(moduleName, callingModule).isXd){
									// don't have to map since that will occur when the dependency is resolved
									i18nDeps.push("dojo/i18n!" + moduleName);
								}// else the bundle will be loaded synchronously when the module is evaluated
							},
							loadInit:function(f){
								f();
							}
						},

hold = {},
						p;

// hijack the correct dojo and apply bundle.def
					try{
						for(p in syncLoaderApi){
							hold[p] = dojo[p];
							dojo[p] = syncLoaderApi[p];
						}
						bundle.def.apply(null, args);
					}catch(e){
						signal("error", [makeErrorToken("failedDojoLoadInit"), e]);
					}finally{
						for(p in syncLoaderApi){
							dojo[p] = hold[p];
						}
					}

if(i18nDeps){
						requireList = requireList.concat(i18nDeps);
					}

if(requireList.length){
						dojoRequirePlugin(requireList.join(","), require, loaded);
					}else{
						loaded();
					}
				});
			});
		},

extractApplication = function(
			text,			  // the text to search
			startSearch,	  // the position in text to start looking for the closing paren
			startApplication  // the position in text where the function application expression starts
		){
			// find end of the call by finding the matching end paren
			// Warning: as usual, this will fail in the presence of unmatched right parans contained in strings, regexs, or unremoved comments
			var parenRe = /$|$/g,
				matchCount = 1,
				match;
			parenRe.lastIndex = startSearch;
			while((match = parenRe.exec(text))){
				if(match[0] == ")"){
					matchCount -= 1;
				}else{
					matchCount += 1;
				}
				if(matchCount == 0){
					break;
				}
			}

if(matchCount != 0){
				throw "unmatched paren around character " + parenRe.lastIndex + " in: " + text;
			}

//Put the master matching string in the results.
			return [dojo.trim(text.substring(startApplication, parenRe.lastIndex))+";\n", parenRe.lastIndex];
		},

// the following regex is taken from 1.6. It is a very poor technique to remove comments and
		// will fail in some cases; for example, consider the code...
		//
		//	  var message = "Category-1 */* Category-2";
		//
		// The regex that follows will see a /* comment and trash the code accordingly. In fact, there are all
		// kinds of cases like this with strings and regexs that will cause this design to fail miserably.
		//
		// Alternative regex designs exist that will result in less-likely failures, but will still fail in many cases.
		// The only solution guaranteed 100% correct is to parse the code and that seems overkill for this
		// backcompat/unbuilt-xdomain layer. In the end, since it's been this way for a while, we won't change it.
		// See the opening paragraphs of Chapter 7 or ECME-262 which describes the lexical abiguity further.
		removeCommentRe = /(\/\*([\s\S]*?)\*\/|\/\/(.*)$)/mg,

amdLoaderApiRe = /(^|\s)(require|define)\s*\(/m,

extractLegacyApiApplications = function(text, noCommentText){
			// scan the noCommentText for any legacy loader API applications. Copy such applications into result (this is
			// used by the builder). Move dojo.loadInit applications to loadInitApplications string. Copy all other applications
			// to otherApplications string. If no applications were found, return 0, signalling an AMD module. Otherwise, return
			// loadInitApplications + otherApplications. Fixup text by replacing
			//
			//	 dojo.loadInit(// etc...
			//
			// with
			//
			//	 \n 0 && dojo.loadInit(// etc...
			//
			// Which results in the dojo.loadInit from *not* being applied. This design goes a long way towards protecting the
			// code from an over-agressive removeCommentRe. However...
			//
			// WARNING: the removeCommentRe will cause an error if a detected comment removes all or part of a legacy-loader application
			// that is not in a comment.

var match, startSearch, startApplication, application,
				loadInitApplications = [],
				otherApplications = [],
				allApplications = [];

// noCommentText may be provided by a build app with comments extracted by a better method than regex (hopefully)
			noCommentText = noCommentText || text.replace(removeCommentRe, function(match){
				// remove iff the detected comment has text that looks like a sync loader API application; this helps by
				// removing as little as possible, minimizing the changes the janky regex will kill the module
				syncLoaderApiRe.lastIndex = amdLoaderApiRe.lastIndex = 0;
				return (syncLoaderApiRe.test(match) || amdLoaderApiRe.test(match)) ? "" : match;
			});

// find and extract all dojo.loadInit applications
			while((match = syncLoaderApiRe.exec(noCommentText))){
				startSearch = syncLoaderApiRe.lastIndex;
				startApplication = startSearch	- match[0].length;
				application = extractApplication(noCommentText, startSearch, startApplication);
				if(match[2]=="loadInit"){
					loadInitApplications.push(application[0]);
				}else{
					otherApplications.push(application[0]);
				}
				syncLoaderApiRe.lastIndex = application[1];
			}
			allApplications = loadInitApplications.concat(otherApplications);
			if(allApplications.length || !amdLoaderApiRe.test(noCommentText)){
				// either there were some legacy loader API applications or there were no AMD API applications
				return [text.replace(/(^|\s)dojo\.loadInit\s*\(/g, "\n0 && dojo.loadInit("), allApplications.join(""), allApplications];
			}else{
				// legacy loader API *was not* detected and AMD API *was* detected; therefore, assume it's an AMD module
				return 0;
			}
		},

transformToAmd = function(module, text){
			// This is roughly the equivalent of dojo._xdCreateResource in 1.6-; however, it expresses a v1.6- dojo
			// module in terms of AMD define instead of creating the dojo proprietary xdomain module expression.
			// The module could have originated from several sources:
			//
			//	 * amd require() a module, e.g., require(["my/module"])
			//	 * amd require() a nonmodule, e.g., require(["my/resource.js"')
			//	 * amd define() deps vector (always a module)
			//	 * dojo.require() a module, e.g. dojo.require("my.module")
			//	 * dojo.require() a nonmodule, e.g., dojo.require("my.module", true)
			//	 * dojo.requireIf/requireAfterIf/platformRequire a module
			//
			// The module is scanned for legacy loader API applications; if none are found, then assume the module is an
			// AMD module and return 0. Otherwise, a synthetic dojo/loadInit plugin resource is created and the module text
			// is rewritten as an AMD module with the single dependency of this synthetic resource. When the dojo/loadInit
			// plugin loaded the synthetic resource, it will cause all dojo.loadInit's to be executed, find all dojo.require's
			// (either directly consequent to dojo.require or indirectly consequent to dojo.require[After]If or
			// dojo.platformRequire, and finally cause loading of all dojo.required modules with the dojo/require plugin. Thus,
			// when the dojo/loadInit plugin reports it has been loaded, all modules required by the given module are guaranteed
			// loaded (but not executed). This then allows the module to execute it's code path without interupts, thereby
			// following the synchronous code path.
			//
			// Notice that this function behaves the same whether or not it happens to be in a mapped dojo/loader module.

var extractResult, id, names = [], namesAsStrings = [];
			if(buildDetectRe.test(text) || !(extractResult = extractLegacyApiApplications(text))){
				// buildDetectRe.test(text) => a built module, always AMD
				// extractResult==0 => no sync API
				return 0;
			}

// manufacture a synthetic module id that can never be a real mdule id (just like require does)
			id = module.mid + "-*loadInit";

// construct the dojo/loadInit names vector which causes any relocated names to be defined as lexical variables under their not-relocated name
			// the dojo/loadInit plugin assumes the first name in names is "dojo"

for(var p in getModule("dojo", module).result.scopeMap){
				names.push(p);
				namesAsStrings.push('"' + p + '"');
			}

// rewrite the module as a synthetic dojo/loadInit plugin resource + the module expressed as an AMD module that depends on this synthetic resource
			// don't have to map dojo/init since that will occur when the dependency is resolved
			return "// xdomain rewrite of " + module.mid + "\n" +
				"define('" + id + "',{\n" +
				"\tnames:" + json.stringify(names) + ",\n" +
				"\tdef:function(" + names.join(",") + "){" + extractResult[1] + "}" +
				"});\n\n" +
				"define(" + json.stringify(names.concat(["dojo/loadInit!"+id])) + ", function(" + names.join(",") + "){\n" + extractResult[0] + "});";
		},

loaderVars = require.initSyncLoader(dojoRequirePlugin, checkDojoRequirePlugin, transformToAmd),

sync =
			loaderVars.sync,

requested =
			loaderVars.requested,

arrived =
			loaderVars.arrived,

nonmodule =
			loaderVars.nonmodule,

executing =
			loaderVars.executing,

executed =
			loaderVars.executed,

syncExecStack =
			loaderVars.syncExecStack,

modules =
			loaderVars.modules,

execQ =
			loaderVars.execQ,

getModule =
			loaderVars.getModule,

injectModule =
			loaderVars.injectModule,

setArrived =
			loaderVars.setArrived,

signal =
			loaderVars.signal,

finishExec =
			loaderVars.finishExec,

execModule =
			loaderVars.execModule,

getLegacyMode =
			loaderVars.getLegacyMode,

guardCheckComplete =
			loaderVars.guardCheckComplete;

// there is exactly one dojoRequirePlugin among possibly-many dojo/_base/loader's (owing to mapping)
	dojoRequirePlugin = loaderVars.dojoRequirePlugin;

dojo.provide = function(mid){
		var executingModule = syncExecStack[0],
			module = lang.mixin(getModule(slashName(mid), require.module), {
				executed:executing,
				result:lang.getObject(mid, true)
			});
		setArrived(module);
		if(executingModule){
			(executingModule.provides || (executingModule.provides = [])).push(function(){
				module.result = lang.getObject(mid);
				delete module.provides;
				module.executed!==executed && finishExec(module);
			});
		}// else dojo.provide called not consequent to loading; therefore, give up trying to publish module value to loader namespace
		return module.result;
	};

has.add("config-publishRequireResult", 1, 0, 0);

dojo.require = function(moduleName, omitModuleCheck) {
		// summary:
		//		loads a Javascript module from the appropriate URI
		//
		// moduleName: String
		//		module name to load, using periods for separators,
		//		 e.g. "dojo.date.locale".  Module paths are de-referenced by dojo's
		//		internal mapping of locations to names and are disambiguated by
		//		longest prefix. See `dojo.registerModulePath()` for details on
		//		registering new modules.
		//
		// omitModuleCheck: Boolean?
		//		if `true`, omitModuleCheck skips the step of ensuring that the
		//		loaded file actually defines the symbol it is referenced by.
		//		For example if it called as `dojo.require("a.b.c")` and the
		//		file located at `a/b/c.js` does not define an object `a.b.c`,
		//		and exception will be throws whereas no exception is raised
		//		when called as `dojo.require("a.b.c", true)`
		//
		// description:
		//		Modules are loaded via dojo.require by using one of two loaders: the normal loader
		//		and the xdomain loader. The xdomain loader is used when dojo was built with a
		//		custom build that specified loader=xdomain and the module lives on a modulePath
		//		that is a whole URL, with protocol and a domain. The versions of Dojo that are on
		//		the Google and AOL CDNs use the xdomain loader.
		//
		//		If the module is loaded via the xdomain loader, it is an asynchronous load, since
		//		the module is added via a dynamically created script tag. This
		//		means that dojo.require() can return before the module has loaded. However, this
		//		should only happen in the case where you do dojo.require calls in the top-level
		//		HTML page, or if you purposely avoid the loader checking for dojo.require
		//		dependencies in your module by using a syntax like dojo["require"] to load the module.
		//
		//		Sometimes it is useful to not have the loader detect the dojo.require calls in the
		//		module so that you can dynamically load the modules as a result of an action on the
		//		page, instead of right at module load time.
		//
		//		Also, for script blocks in an HTML page, the loader does not pre-process them, so
		//		it does not know to download the modules before the dojo.require calls occur.
		//
		//		So, in those two cases, when you want on-the-fly module loading or for script blocks
		//		in the HTML page, special care must be taken if the dojo.required code is loaded
		//		asynchronously. To make sure you can execute code that depends on the dojo.required
		//		modules, be sure to add the code that depends on the modules in a dojo.addOnLoad()
		//		callback. dojo.addOnLoad waits for all outstanding modules to finish loading before
		//		executing.
		//
		//		This type of syntax works with both xdomain and normal loaders, so it is good
		//		practice to always use this idiom for on-the-fly code loading and in HTML script
		//		blocks. If at some point you change loaders and where the code is loaded from,
		//		it will all still work.
		//
		//		More on how dojo.require
		//		`dojo.require("A.B")` first checks to see if symbol A.B is
		//		defined. If it is, it is simply returned (nothing to do).
		//
		//		If it is not defined, it will look for `A/B.js` in the script root
		//		directory.
		//
		//		`dojo.require` throws an exception if it cannot find a file
		//		to load, or if the symbol `A.B` is not defined after loading.
		//
		//		It returns the object `A.B`, but note the caveats above about on-the-fly loading and
		//		HTML script blocks when the xdomain loader is loading a module.
		//
		//		`dojo.require()` does nothing about importing symbols into
		//		the current namespace.	It is presumed that the caller will
		//		take care of that.
		//
		// example:
		//		To use dojo.require in conjunction with dojo.ready:
		//
		//		|	dojo.require("foo");
		//		|	dojo.require("bar");
		//		|	dojo.addOnLoad(function(){
		//		|		//you can now safely do something with foo and bar
		//		|	});
		//
		// example:
		//		For example, to import all symbols into a local block, you might write:
		//
		//		|	with (dojo.require("A.B")) {
		//		|		...
		//		|	}
		//
		//		And to import just the leaf symbol to a local variable:
		//
		//		|	var B = dojo.require("A.B");
		//		|	...
		//
		// returns:
		//		the required namespace object
		function doRequire(mid, omitModuleCheck){
			var module = getModule(slashName(mid), require.module);
			if(syncExecStack.length && syncExecStack[0].finish){
				// switched to async loading in the middle of evaluating a legacy module; stop
				// applying dojo.require so the remaining dojo.requires are applied in order
				syncExecStack[0].finish.push(mid);
				return undefined;
			}

// recall module.executed has values {0, executing, executed}; therefore, truthy indicates executing or executed
			if(module.executed){
				return module.result;
			}
			omitModuleCheck && (module.result = nonmodule);

// rcg...why here and in two lines??
			var currentMode = getLegacyMode();

// recall, in sync mode to inject is to *eval* the module text
			// if the module is a legacy module, this is the same as executing
			// but if the module is an AMD module, this means defining, not executing
			injectModule(module);
			// the inject may have changed the mode
			currentMode = getLegacyMode();

// in sync mode to dojo.require is to execute
			if(module.executed!==executed && module.injected===arrived){
				// the module was already here before injectModule was called probably finishing up a xdomain
				// load, but maybe a module given to the loader directly rather than having the loader retrieve it

loaderVars.guardCheckComplete(function(){
					execModule(module);
				});
			}
			if(module.executed){
				return module.result;
			}

if(currentMode==sync){
				// the only way to get here is in sync mode and dojo.required a module that
				//	 * was loaded async in the injectModule application a few lines up
				//	 * was an AMD module that had deps that are being loaded async and therefore couldn't execute
				if(module.cjs){
					// the module was an AMD module; unshift, not push, which causes the current traversal to be reattempted from the top
					execQ.unshift(module);
				}else{
					// the module was a legacy module
					syncExecStack.length && (syncExecStack[0].finish= [mid]);
				}
			}else{
				// the loader wasn't in sync mode on entry; probably async mode; therefore, no expectation of getting
				// the module value synchronously; make sure it gets executed though
				execQ.push(module);
			}

return undefined;
		}

var result = doRequire(moduleName, omitModuleCheck);
		if(has("config-publishRequireResult") && !lang.exists(moduleName) && result!==undefined){
			lang.setObject(moduleName, result);
		}
		return result;
	};

dojo.loadInit = function(f) {
		f();
	};

dojo.registerModulePath = function(/*String*/moduleName, /*String*/prefix){
		// summary:
		//		Maps a module name to a path
		// description:
		//		An unregistered module is given the default path of ../[module],
		//		relative to Dojo root. For example, module acme is mapped to
		//		../acme.  If you want to use a different module name, use
		//		dojo.registerModulePath.
		// example:
		//		If your dojo.js is located at this location in the web root:
		//	|	/myapp/js/dojo/dojo/dojo.js
		//		and your modules are located at:
		//	|	/myapp/js/foo/bar.js
		//	|	/myapp/js/foo/baz.js
		//	|	/myapp/js/foo/thud/xyzzy.js
		//		Your application can tell Dojo to locate the "foo" namespace by calling:
		//	|	dojo.registerModulePath("foo", "../../foo");
		//		At which point you can then use dojo.require() to load the
		//		modules (assuming they provide() the same things which are
		//		required). The full code might be:
		//	|	<script type="text/javascript"
		//	|		src="/myapp/js/dojo/dojo/dojo.js"></script>
		//	|	<script type="text/javascript">
		//	|		dojo.registerModulePath("foo", "../../foo");
		//	|		dojo.require("foo.bar");
		//	|		dojo.require("foo.baz");
		//	|		dojo.require("foo.thud.xyzzy");
		//	|	</script>

var paths = {};
		paths[moduleName.replace(/\./g, "/")] = prefix;
		require({paths:paths});
	};

dojo.platformRequire = function(/*Object*/modMap){
		// summary:
		//		require one or more modules based on which host environment
		//		Dojo is currently operating in
		// description:
		//		This method takes a "map" of arrays which one can use to
		//		optionally load dojo modules. The map is indexed by the
		//		possible dojo.name_ values, with two additional values:
		//		"default" and "common". The items in the "default" array will
		//		be loaded if none of the other items have been chosen based on
		//		dojo.name_, set by your host environment. The items in the
		//		"common" array will *always* be loaded, regardless of which
		//		list is chosen.
		// example:
		//		|	dojo.platformRequire({
		//		|		browser: [
		//		|			"foo.sample", // simple module
		//		|			"foo.test",
		//		|			["foo.bar.baz", true] // skip object check in _loadModule (dojo.require)
		//		|		],
		//		|		default: [ "foo.sample._base" ],
		//		|		common: [ "important.module.common" ]
		//		|	});

dojo.requireIf = dojo.requireAfterIf = function(/*Boolean*/ condition, /*String*/ moduleName, /*Boolean?*/omitModuleCheck){
		// summary:
		//		If the condition is true then call `dojo.require()` for the specified
		//		resource
		//
		// example:
		//	|	dojo.requireIf(dojo.isBrowser, "my.special.Module");

if(condition){
			dojo.require(moduleName, omitModuleCheck);
		}
	};

dojo.requireLocalization = function(/*String*/moduleName, /*String*/bundleName, /*String?*/locale){
		require(["../i18n"], function(i18n){
			i18n.getLocalization(moduleName, bundleName, locale);
		});
	};

return {
		// summary:
		//		This module defines the v1.x synchronous loader API.

extractLegacyApiApplications:extractLegacyApiApplications,
		require:dojoRequirePlugin,
		loadInit:dojoLoadInitPlugin
	};
});

dojo/_base/loader.js

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