1  /*
 2   * Copyright (C) 2015-2016 Apple Inc. All rights reserved.
 3   *
 4   * Redistribution and use in source and binary forms, with or without
 5   * modification, are permitted provided that the following conditions
 6   * are met:
 7   * 1. Redistributions of source code must retain the above copyright
 8   *    notice, this list of conditions and the following disclaimer.
 9   * 2. Redistributions in binary form must reproduce the above copyright
10   *    notice, this list of conditions and the following disclaimer in the
11   *    documentation and/or other materials provided with the distribution.
12   *
13   * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14   * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16   * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
17   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18   * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19   * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20   * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21   * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24   */
25  
26  #include "config.h"
27  #include "JSNativeStdFunction.h"
28  
29  #include "JSCJSValueInlines.h"
30  #include "VM.h"
31  
32  namespace JSC {
33  
34  const ClassInfo JSNativeStdFunction::s_info = { "Function", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(JSNativeStdFunction) };
35  
36  static JSC_DECLARE_HOST_FUNCTION(runStdFunction);
37  
38  JSNativeStdFunction::JSNativeStdFunction(VM& vm, NativeExecutable* executable, JSGlobalObject* globalObject, Structure* structure, NativeStdFunction&& function)
39      : Base(vm, executable, globalObject, structure)
40      , m_function(WTFMove(function))
41  {
42  }
43  
44  void JSNativeStdFunction::visitChildren(JSCell* cell, SlotVisitor& visitor)
45  {
46      JSNativeStdFunction* thisObject = jsCast<JSNativeStdFunction*>(cell);
47      ASSERT_GC_OBJECT_INHERITS(thisObject, info());
48      Base::visitChildren(thisObject, visitor);
49  }
50  
51  void JSNativeStdFunction::finishCreation(VM& vm, NativeExecutable* executable, unsigned length, const String& name)
52  {
53      Base::finishCreation(vm, executable, length, name);
54      ASSERT(inherits(vm, info()));
55  }
56  
57  JSC_DEFINE_HOST_FUNCTION(runStdFunction, (JSGlobalObject* globalObject, CallFrame* callFrame))
58  {
59      JSNativeStdFunction* function = jsCast<JSNativeStdFunction*>(callFrame->jsCallee());
60      ASSERT(function);
61      return function->function()(globalObject, callFrame);
62  }
63  
64  JSNativeStdFunction* JSNativeStdFunction::create(VM& vm, JSGlobalObject* globalObject, unsigned length, const String& name, NativeStdFunction&& nativeStdFunction, Intrinsic intrinsic, NativeFunction nativeConstructor)
65  {
66      NativeExecutable* executable = vm.getHostFunction(runStdFunction, intrinsic, nativeConstructor, nullptr, name);
67      Structure* structure = globalObject->nativeStdFunctionStructure();
68      JSNativeStdFunction* function = new (NotNull, allocateCell<JSNativeStdFunction>(vm.heap)) JSNativeStdFunction(vm, executable, globalObject, structure, WTFMove(nativeStdFunction));
69      function->finishCreation(vm, executable, length, name);
70      return function;
71  }
72  
73  } // namespace JSC