71 lines
2.4 KiB
C++
71 lines
2.4 KiB
C++
/*
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* Copyright (C) 2021 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. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <wtf/Forward.h>
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namespace WebCore {
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enum class CalcExpressionNodeType : uint8_t {
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Undefined,
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Number,
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Length,
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Operation,
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Negation,
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Inversion,
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BlendLength,
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};
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class CalcExpressionNode {
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WTF_MAKE_FAST_ALLOCATED;
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public:
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explicit CalcExpressionNode(CalcExpressionNodeType = CalcExpressionNodeType::Undefined);
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virtual ~CalcExpressionNode() = default;
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CalcExpressionNodeType type() const { return m_type; }
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virtual float evaluate(float maxValue) const = 0;
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virtual bool operator==(const CalcExpressionNode&) const = 0;
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virtual void dump(TextStream&) const = 0;
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private:
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CalcExpressionNodeType m_type;
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};
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inline CalcExpressionNode::CalcExpressionNode(CalcExpressionNodeType type)
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: m_type(type)
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{
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}
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TextStream& operator<<(TextStream&, const CalcExpressionNode&);
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}
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#define SPECIALIZE_TYPE_TRAITS_CALCEXPRESSION_NODE(ToValueTypeName, predicate) \
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SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::ToValueTypeName) \
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static bool isType(const WebCore::CalcExpressionNode& node) { return node.predicate; } \
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SPECIALIZE_TYPE_TRAITS_END()
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