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/*
* Copyright (C) 2022 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
#include "ASTBuilder.h"
#include "ASTNode.h"
#include "ConstantValue.h"
#include <wtf/ReferenceWrapperVector.h>
namespace WGSL {
class BoundsCheckVisitor;
class ConstantRewriter;
class EntryPointRewriter;
class PointerRewriter;
class RewriteGlobalVariables;
class TypeChecker;
struct Type;
namespace AST {
class Expression : public Node {
WGSL_AST_BUILDER_NODE(Expression);
friend BoundsCheckVisitor;
friend ConstantRewriter;
friend EntryPointRewriter;
friend PointerRewriter;
friend RewriteGlobalVariables;
friend TypeChecker;
public:
using Ref = std::reference_wrapper<Expression>;
using Ptr = Expression*;
using List = ReferenceWrapperVector<Expression>;
virtual ~Expression() { }
const Type* inferredType() const { return m_inferredType; }
const std::optional<ConstantValue>& constantValue() const { return m_constantValue; }
void setConstantValue(ConstantValue value) { m_constantValue = value; }
protected:
Expression(SourceSpan span)
: Node(span)
{ }
const Type* m_inferredType { nullptr };
private:
std::optional<ConstantValue> m_constantValue { std::nullopt };
};
} // namespace AST
} // namespace WGSL
SPECIALIZE_TYPE_TRAITS_BEGIN(WGSL::AST::Expression)
static bool isType(const WGSL::AST::Node& node)
{
switch (node.kind()) {
// Expressions
case WGSL::AST::NodeKind::BinaryExpression:
case WGSL::AST::NodeKind::BitcastExpression:
case WGSL::AST::NodeKind::IndexAccessExpression:
case WGSL::AST::NodeKind::CallExpression:
case WGSL::AST::NodeKind::IdentifierExpression:
case WGSL::AST::NodeKind::FieldAccessExpression:
case WGSL::AST::NodeKind::UnaryExpression:
// Literals
case WGSL::AST::NodeKind::AbstractFloatLiteral:
case WGSL::AST::NodeKind::AbstractIntegerLiteral:
case WGSL::AST::NodeKind::BoolLiteral:
case WGSL::AST::NodeKind::Float32Literal:
case WGSL::AST::NodeKind::Float16Literal:
case WGSL::AST::NodeKind::Signed32Literal:
case WGSL::AST::NodeKind::Unsigned32Literal:
return true;
default:
return false;
}
}
SPECIALIZE_TYPE_TRAITS_END()
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