1/*
2 * Copyright (C) 2015-2019 Apple Inc. All Rights Reserved.
3 * Copyright (C) 2016 Yusuke Suzuki <[email protected]>.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#pragma once
28
29#include "JSObject.h"
30
31namespace JSC {
32
33class JSInternalPromise;
34class JSModuleNamespaceObject;
35class JSModuleRecord;
36class SourceCode;
37
38class JSModuleLoader final : public JSNonFinalObject {
39private:
40 JSModuleLoader(VM&, Structure*);
41public:
42 using Base = JSNonFinalObject;
43 static constexpr unsigned StructureFlags = Base::StructureFlags | HasStaticPropertyTable;
44
45 enum Status {
46 Fetch = 1,
47 Instantiate,
48 Satisfy,
49 Link,
50 Ready,
51 };
52
53 static JSModuleLoader* create(JSGlobalObject* globalObject, VM& vm, Structure* structure)
54 {
55 JSModuleLoader* object = new (NotNull, allocateCell<JSModuleLoader>(vm.heap)) JSModuleLoader(vm, structure);
56 object->finishCreation(globalObject, vm);
57 return object;
58 }
59
60 DECLARE_INFO;
61
62 static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
63 {
64 return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
65 }
66
67 // APIs to control the module loader.
68 JSValue provideFetch(JSGlobalObject*, JSValue key, const SourceCode&);
69 JSInternalPromise* loadAndEvaluateModule(JSGlobalObject*, JSValue moduleName, JSValue parameters, JSValue scriptFetcher);
70 JSInternalPromise* loadModule(JSGlobalObject*, JSValue moduleName, JSValue parameters, JSValue scriptFetcher);
71 JSValue linkAndEvaluateModule(JSGlobalObject*, JSValue moduleKey, JSValue scriptFetcher);
72 JSInternalPromise* requestImportModule(JSGlobalObject*, const Identifier&, JSValue parameters, JSValue scriptFetcher);
73
74 // Platform dependent hooked APIs.
75 JSInternalPromise* importModule(JSGlobalObject*, JSString* moduleName, JSValue parameters, const SourceOrigin& referrer);
76 JSInternalPromise* resolve(JSGlobalObject*, JSValue name, JSValue referrer, JSValue scriptFetcher);
77 Identifier resolveSync(JSGlobalObject*, JSValue name, JSValue referrer, JSValue scriptFetcher);
78 JSInternalPromise* fetch(JSGlobalObject*, JSValue key, JSValue parameters, JSValue scriptFetcher);
79 JSObject* createImportMetaProperties(JSGlobalObject*, JSValue key, JSModuleRecord*, JSValue scriptFetcher);
80
81 // Additional platform dependent hooked APIs.
82 JSValue evaluate(JSGlobalObject*, JSValue key, JSValue moduleRecord, JSValue scriptFetcher);
83 JSValue evaluateNonVirtual(JSGlobalObject*, JSValue key, JSValue moduleRecord, JSValue scriptFetcher);
84
85 // Utility functions.
86 JSModuleNamespaceObject* getModuleNamespaceObject(JSGlobalObject*, JSValue moduleRecord);
87 JSArray* dependencyKeysIfEvaluated(JSGlobalObject*, JSValue key);
88
89protected:
90 void finishCreation(JSGlobalObject*, VM&);
91};
92
93} // namespace JSC
94