/* * Copyright (C) 2016 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. ``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 * 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 "ClassInfo.h" #include "DOMJITEffect.h" #include "SpeculatedType.h" namespace JSC { namespace DOMJIT { // FIXME: Currently, we only support functions which arguments are up to 2. // Eventually, we should extend this. But possibly, 2 or 3 can cover typical use cases. // https://bugs.webkit.org/show_bug.cgi?id=164346 #define JSC_DOMJIT_SIGNATURE_MAX_ARGUMENTS 2 #define JSC_DOMJIT_SIGNATURE_MAX_ARGUMENTS_INCLUDING_THIS (1 + JSC_DOMJIT_SIGNATURE_MAX_ARGUMENTS) class Signature { public: template<typename... Arguments> constexpr Signature(uintptr_t unsafeFunction, const ClassInfo* classInfo, Effect effect, SpeculatedType result, Arguments... arguments) : unsafeFunction(unsafeFunction) , classInfo(classInfo) , effect(effect) , result(result) , arguments {static_cast<SpeculatedType>(arguments)...} , argumentCount(sizeof...(Arguments)) { } uintptr_t unsafeFunction; const ClassInfo* const classInfo; const Effect effect; const SpeculatedType result; const SpeculatedType arguments[JSC_DOMJIT_SIGNATURE_MAX_ARGUMENTS]; const unsigned argumentCount; }; } }