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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 "ASTNode.h"
#include <wtf/TypeCasts.h>
namespace WGSL::AST {
class TypeDecl : public ASTNode {
WTF_MAKE_FAST_ALLOCATED;
public:
enum class Kind : uint8_t {
Named,
Parameterized,
};
TypeDecl(SourceSpan span)
: ASTNode(span)
{
}
virtual ~TypeDecl() {}
virtual Kind kind() const = 0;
bool isNamed() const { return kind() == Kind::Named; }
bool isParameterized() const { return kind() == Kind::Parameterized; }
};
class NamedType final : public TypeDecl {
WTF_MAKE_FAST_ALLOCATED;
public:
NamedType(SourceSpan span, StringView&& name)
: TypeDecl(span)
, m_name(WTFMove(name))
{
}
Kind kind() const override { return Kind::Named; }
const StringView& name() const { return m_name; }
private:
StringView m_name;
};
class ParameterizedType : public TypeDecl {
WTF_MAKE_FAST_ALLOCATED;
public:
enum class Base {
Vec2,
Vec3,
Vec4,
Mat2x2,
Mat2x3,
Mat2x4,
Mat3x2,
Mat3x3,
Mat3x4,
Mat4x2,
Mat4x3,
Mat4x4
};
ParameterizedType(SourceSpan span, Base base, UniqueRef<TypeDecl>&& elementType)
: TypeDecl(span)
, m_base(base)
, m_elementType(WTFMove(elementType))
{
}
static std::optional<Base> stringViewToKind(StringView& view)
{
if (view == "vec2"_s)
return Base::Vec2;
if (view == "vec3"_s)
return Base::Vec3;
if (view == "vec4"_s)
return Base::Vec4;
if (view == "mat2x2"_s)
return Base::Mat2x2;
if (view == "mat2x3"_s)
return Base::Mat2x3;
if (view == "mat2x4"_s)
return Base::Mat2x4;
if (view == "mat3x2"_s)
return Base::Mat3x2;
if (view == "mat3x3"_s)
return Base::Mat3x3;
if (view == "mat3x4"_s)
return Base::Mat3x4;
if (view == "mat4x2"_s)
return Base::Mat4x2;
if (view == "mat4x3"_s)
return Base::Mat4x3;
if (view == "mat4x4"_s)
return Base::Mat4x4;
return std::nullopt;
}
Kind kind() const override { return Kind::Parameterized; }
Base base() const { return m_base; }
TypeDecl& elementType() { return m_elementType; }
private:
Base m_base;
UniqueRef<TypeDecl> m_elementType;
};
} // namespace WGSL::AST
#define SPECIALIZE_TYPE_TRAITS_WGSL_TYPE(ToValueTypeName, predicate) \
SPECIALIZE_TYPE_TRAITS_BEGIN(WGSL::AST::ToValueTypeName) \
static bool isType(const WGSL::AST::TypeDecl& type) { return type.predicate; } \
SPECIALIZE_TYPE_TRAITS_END()
SPECIALIZE_TYPE_TRAITS_WGSL_TYPE(NamedType, isNamed())
SPECIALIZE_TYPE_TRAITS_WGSL_TYPE(ParameterizedType, isParameterized())
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