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https://github.com/darlinghq/darling-JavaScriptCore.git
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64 lines
2.6 KiB
C++
64 lines
2.6 KiB
C++
/*
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* Copyright (C) 2016-2019 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 "ClassInfo.h"
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#include "DOMJITEffect.h"
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#include "SpeculatedType.h"
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namespace JSC { namespace DOMJIT {
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// FIXME: Currently, we only support functions which arguments are up to 2.
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// Eventually, we should extend this. But possibly, 2 or 3 can cover typical use cases.
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// https://bugs.webkit.org/show_bug.cgi?id=164346
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#define JSC_DOMJIT_SIGNATURE_MAX_ARGUMENTS 2
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#define JSC_DOMJIT_SIGNATURE_MAX_ARGUMENTS_INCLUDING_THIS (1 + JSC_DOMJIT_SIGNATURE_MAX_ARGUMENTS)
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using FunctionPtr = void (*WTF_VTBL_FUNCPTR_PTRAUTH(DOMJITFunctionPtrTag))();
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class Signature {
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public:
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template<typename... Arguments>
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constexpr Signature(CFunctionPtr functionWithoutTypeCheck, const ClassInfo* classInfo, Effect effect, SpeculatedType result, Arguments... arguments)
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: functionWithoutTypeCheck(functionWithoutTypeCheck.get())
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, classInfo(classInfo)
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, result(result)
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, arguments {static_cast<SpeculatedType>(arguments)...}
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, argumentCount(sizeof...(Arguments))
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, effect(effect)
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{
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}
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const FunctionPtr functionWithoutTypeCheck;
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const ClassInfo* const classInfo;
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const SpeculatedType result;
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const SpeculatedType arguments[JSC_DOMJIT_SIGNATURE_MAX_ARGUMENTS];
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const unsigned argumentCount;
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const Effect effect;
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};
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} }
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