Linter Demo

Errors: 0

Warnings: 1

File: /home/fstrocco/Dart/dart/benchmark/compiler/lib/src/js_emitter/main_call_stub_generator.dart

// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file // for details. All rights reserved. Use of this source code is governed by a // BSD-style license that can be found in the LICENSE file. part of dart2js.js_emitter; class MainCallStubGenerator { final Compiler compiler; final JavaScriptBackend backend; final CodeEmitterTask emitterTask; MainCallStubGenerator(this.compiler, this.backend, this.emitterTask); /// Returns the code equivalent to: /// `function(args) { $.startRootIsolate(X.main$closure(), args); }` jsAst.Expression _buildIsolateSetupClosure(Element appMain, Element isolateMain) { jsAst.Expression mainAccess = emitterTask.isolateStaticClosureAccess(appMain); // Since we pass the closurized version of the main method to // the isolate method, we must make sure that it exists. return js('function(a){ #(#, a); }', [emitterTask.staticFunctionAccess(isolateMain), mainAccess]); } jsAst.Statement generateInvokeMain() { Element main = compiler.mainFunction; jsAst.Expression mainCallClosure = null; if (compiler.hasIsolateSupport) { Element isolateMain = backend.isolateHelperLibrary.find(JavaScriptBackend.START_ROOT_ISOLATE); mainCallClosure = _buildIsolateSetupClosure(main, isolateMain); } else if (compiler.hasIncrementalSupport) { mainCallClosure = js( 'function() { return #(); }', emitterTask.staticFunctionAccess(main)); } else { mainCallClosure = emitterTask.staticFunctionAccess(main); } jsAst.Expression currentScriptAccess = emitterTask.generateEmbeddedGlobalAccess(embeddedNames.CURRENT_SCRIPT); // This code finds the currently executing script by listening to the // onload event of all script tags and getting the first script which // finishes. Since onload is called immediately after execution this should // not substantially change execution order. return js.statement(''' (function (callback) { if (typeof document === "undefined") { callback(null); return; } if (document.currentScript) { callback(document.currentScript); return; } var scripts = document.scripts; function onLoad(event) { for (var i = 0; i < scripts.length; ++i) { scripts[i].removeEventListener("load", onLoad, false); } callback(event.target); } for (var i = 0; i < scripts.length; ++i) { scripts[i].addEventListener("load", onLoad, false); } })(function(currentScript) { #currentScript = currentScript; if (typeof dartMainRunner === "function") { dartMainRunner(#mainCallClosure, []); } else { #mainCallClosure([]); } })''', {'currentScript': currentScriptAccess, 'mainCallClosure': mainCallClosure}); } }