mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
synced 2024-11-26 21:50:53 +00:00
112 lines
3.5 KiB
C++
112 lines
3.5 KiB
C++
/*
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* Copyright (C) 2014 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "JSGlobalObject.h"
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#include "JSObject.h"
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#include "JSScope.h"
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namespace JSC {
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class JSGlobalObject;
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class LLIntOffsetsExtractor;
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class JSCallee : public JSNonFinalObject {
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friend class JIT;
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#if ENABLE(DFG_JIT)
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friend class DFG::SpeculativeJIT;
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friend class DFG::JITCompiler;
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#endif
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friend class VM;
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public:
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using Base = JSNonFinalObject;
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static constexpr unsigned StructureFlags = Base::StructureFlags | ImplementsHasInstance | ImplementsDefaultHasInstance;
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template<typename CellType, SubspaceAccess>
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static IsoSubspace* subspaceFor(VM& vm)
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{
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return &vm.calleeSpace;
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}
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static JSCallee* create(VM& vm, JSGlobalObject* globalObject, JSScope* scope)
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{
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JSCallee* callee = new (NotNull, allocateCell<JSCallee>(vm.heap)) JSCallee(vm, scope, globalObject->calleeStructure());
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callee->finishCreation(vm);
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return callee;
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}
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JSScope* scope()
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{
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return m_scope.get();
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}
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// This method may be called for host functions, in which case it
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// will return an arbitrary value. This should only be used for
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// optimized paths in which the return value does not matter for
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// host functions, and checking whether the function is a host
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// function is deemed too expensive.
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JSScope* scopeUnchecked()
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{
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return m_scope.get();
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}
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void setScope(VM& vm, JSScope* scope)
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{
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m_scope.set(vm, this, scope);
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}
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DECLARE_EXPORT_INFO;
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static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
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{
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ASSERT(globalObject);
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return Structure::create(vm, globalObject, prototype, TypeInfo(JSCalleeType, StructureFlags), info());
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}
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static inline ptrdiff_t offsetOfScopeChain()
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{
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return OBJECT_OFFSETOF(JSCallee, m_scope);
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}
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protected:
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JS_EXPORT_PRIVATE JSCallee(VM&, JSGlobalObject*, Structure*);
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JSCallee(VM&, JSScope*, Structure*);
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void finishCreation(VM&);
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using Base::finishCreation;
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static void visitChildren(JSCell*, SlotVisitor&);
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private:
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friend class LLIntOffsetsExtractor;
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WriteBarrier<JSScope> m_scope;
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};
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} // namespace JSC
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