Source/JavaScriptCore/runtime/JSNativeStdFunction.cpp

/*
 * Copyright (C) 2015-2021 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
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 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
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#include "config.h"
#include "JSNativeStdFunction.h"

#include "JSCJSValueInlines.h"
#include "VM.h"

namespace JSC {

const ClassInfo JSNativeStdFunction::s_info = { "Function", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(JSNativeStdFunction) };

static JSC_DECLARE_HOST_FUNCTION(runStdFunction);

JSNativeStdFunction::JSNativeStdFunction(VM& vm, NativeExecutable* executable, JSGlobalObject* globalObject, Structure* structure, NativeStdFunction&& function)
    : Base(vm, executable, globalObject, structure)
    , m_function(WTFMove(function))
{
}

template<typename Visitor>
void JSNativeStdFunction::visitChildrenImpl(JSCell* cell, Visitor& visitor)
{
    JSNativeStdFunction* thisObject = jsCast<JSNativeStdFunction*>(cell);
    ASSERT_GC_OBJECT_INHERITS(thisObject, info());
    Base::visitChildren(thisObject, visitor);
}

DEFINE_VISIT_CHILDREN(JSNativeStdFunction);

void JSNativeStdFunction::finishCreation(VM& vm, NativeExecutable* executable, unsigned length, const String& name)
{
    Base::finishCreation(vm, executable, length, name);
    ASSERT(inherits(vm, info()));
}

JSC_DEFINE_HOST_FUNCTION(runStdFunction, (JSGlobalObject* globalObject, CallFrame* callFrame))
{
    JSNativeStdFunction* function = jsCast<JSNativeStdFunction*>(callFrame->jsCallee());
    ASSERT(function);
    return function->function()(globalObject, callFrame);
}

JSNativeStdFunction* JSNativeStdFunction::create(VM& vm, JSGlobalObject* globalObject, unsigned length, const String& name, NativeStdFunction&& nativeStdFunction, Intrinsic intrinsic, NativeFunction nativeConstructor)
{
    NativeExecutable* executable = vm.getHostFunction(runStdFunction, intrinsic, nativeConstructor, nullptr, name);
    Structure* structure = globalObject->nativeStdFunctionStructure();
    JSNativeStdFunction* function = new (NotNull, allocateCell<JSNativeStdFunction>(vm.heap)) JSNativeStdFunction(vm, executable, globalObject, structure, WTFMove(nativeStdFunction));
    function->finishCreation(vm, executable, length, name);
    return function;
}

} // namespace JSC