blob: 99781c57b97a303675203988f2b392bda82a0311 [file] [log] [blame]
/*
* Copyright (C) 2015 Yusuke Suzuki <utatane.tea@gmail.com>.
* Copyright (C) 2018 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:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* 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. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "JSFunction.h"
namespace JSC {
class JSGlobalObject;
class LLIntOffsetsExtractor;
class JSGeneratorFunction final : public JSFunction {
friend class JIT;
#if ENABLE(DFG_JIT)
friend class DFG::SpeculativeJIT;
friend class DFG::JITCompiler;
#endif
friend class VM;
public:
typedef JSFunction Base;
enum class GeneratorResumeMode : int32_t {
NormalMode = 0,
ReturnMode = 1,
ThrowMode = 2
};
enum class GeneratorState : int32_t {
Completed = -1,
Executing = -2,
};
// [this], @generator, @generatorState, @generatorValue, @generatorResumeMode, @generatorFrame.
enum class GeneratorArgument : int32_t {
ThisValue = 0,
Generator = 1,
State = 2,
Value = 3,
ResumeMode = 4,
Frame = 5,
};
const static unsigned StructureFlags = Base::StructureFlags;
template<typename CellType, SubspaceAccess>
static IsoSubspace* subspaceFor(VM& vm)
{
return &vm.functionSpace;
}
DECLARE_EXPORT_INFO;
static JSGeneratorFunction* create(VM&, FunctionExecutable*, JSScope*);
static JSGeneratorFunction* create(VM&, FunctionExecutable*, JSScope*, Structure*);
static JSGeneratorFunction* createWithInvalidatedReallocationWatchpoint(VM&, FunctionExecutable*, JSScope*);
static size_t allocationSize(Checked<size_t> inlineCapacity)
{
ASSERT_UNUSED(inlineCapacity, !inlineCapacity);
return sizeof(JSGeneratorFunction);
}
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
ASSERT(globalObject);
return Structure::create(vm, globalObject, prototype, TypeInfo(JSFunctionType, StructureFlags), info());
}
private:
JSGeneratorFunction(VM&, FunctionExecutable*, JSScope*, Structure*);
static JSGeneratorFunction* createImpl(VM&, FunctionExecutable*, JSScope*, Structure*);
friend class LLIntOffsetsExtractor;
};
static_assert(sizeof(JSGeneratorFunction) == sizeof(JSFunction), "Some subclasses of JSFunction should be the same size to share IsoSubspace");
} // namespace JSC