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/*
* Copyright (c) 2023 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 "Constraints.h"
#include "TypeStore.h"
namespace WGSL {
struct NumericVariable {
unsigned id;
};
using AbstractValue = std::variant<NumericVariable, unsigned>;
struct TypeVariable {
unsigned id;
Constraint constraints { Constraints::None };
};
struct AbstractVector;
struct AbstractMatrix;
struct AbstractTexture;
using AbstractType = std::variant<
AbstractVector,
AbstractMatrix,
AbstractTexture,
TypeVariable,
const Type*
>;
using AbstractScalarType = std::variant<
TypeVariable,
const Type*
>;
struct AbstractVector {
AbstractScalarType element;
AbstractValue size;
};
struct AbstractMatrix {
AbstractScalarType element;
AbstractValue columns;
AbstractValue rows;
};
struct AbstractTexture {
AbstractScalarType element;
Types::Texture::Kind kind;
};
struct OverloadCandidate {
Vector<TypeVariable, 1> typeVariables;
Vector<NumericVariable, 2> numericVariables;
Vector<AbstractType, 2> parameters;
AbstractType result;
};
struct SelectedOverload {
FixedVector<const Type*> parameters;
const Type* result;
};
std::optional<SelectedOverload> resolveOverloads(TypeStore&, const Vector<OverloadCandidate>&, const Vector<const Type*>& valueArguments, const Vector<const Type*>& typeArguments);
} // namespace WGSL
namespace WTF {
void printInternal(PrintStream&, const WGSL::NumericVariable&);
void printInternal(PrintStream&, const WGSL::AbstractValue&);
void printInternal(PrintStream&, const WGSL::TypeVariable&);
void printInternal(PrintStream&, const WGSL::AbstractType&);
void printInternal(PrintStream&, const WGSL::AbstractScalarType&);
void printInternal(PrintStream&, const WGSL::OverloadCandidate&);
void printInternal(PrintStream&, WGSL::Types::Texture::Kind);
} // namespace WTF
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