| /* |
| * Copyright (C) 2019 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 |
| |
| #if ENABLE(WEBGPU) |
| |
| #include "WHLSLUnnamedType.h" |
| #include <wtf/HashTraits.h> |
| |
| namespace WebCore { |
| |
| namespace WHLSL { |
| |
| class UnnamedTypeKey { |
| public: |
| UnnamedTypeKey() = default; |
| UnnamedTypeKey(WTF::HashTableDeletedValueType) |
| : m_type(bitwise_cast<AST::UnnamedType*>(static_cast<uintptr_t>(1))) |
| { |
| } |
| |
| UnnamedTypeKey(AST::UnnamedType& type) |
| : m_type(&type) |
| { |
| } |
| |
| bool isEmptyValue() const { return !m_type; } |
| bool isHashTableDeletedValue() const { return m_type == bitwise_cast<AST::UnnamedType*>(static_cast<uintptr_t>(1)); } |
| |
| unsigned hash() const { return m_type->hash(); } |
| bool operator==(const UnnamedTypeKey& other) const { return *m_type == *other.m_type; } |
| AST::UnnamedType& unnamedType() const { return *m_type; } |
| |
| struct Hash { |
| static unsigned hash(const UnnamedTypeKey& key) { return key.hash(); } |
| static bool equal(const UnnamedTypeKey& a, const UnnamedTypeKey& b) { return a == b; } |
| static const bool safeToCompareToEmptyOrDeleted = false; |
| static const bool emptyValueIsZero = true; |
| }; |
| |
| struct Traits : public WTF::SimpleClassHashTraits<UnnamedTypeKey> { |
| static const bool hasIsEmptyValueFunction = true; |
| static bool isEmptyValue(const UnnamedTypeKey& key) { return key.isEmptyValue(); } |
| }; |
| |
| private: |
| AST::UnnamedType* m_type { nullptr }; |
| }; |
| |
| } |
| |
| } |
| |
| namespace WTF { |
| |
| template<> struct HashTraits<WebCore::WHLSL::UnnamedTypeKey> : WebCore::WHLSL::UnnamedTypeKey::Traits { }; |
| template<> struct DefaultHash<WebCore::WHLSL::UnnamedTypeKey> { |
| typedef WebCore::WHLSL::UnnamedTypeKey::Hash Hash; |
| }; |
| |
| } // namespace WTF |
| |
| #endif |