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// Copyright 2021 The Tint Authors.
//
// Licensed under the Apache License, Version 2.0(the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef SRC_TINT_LANG_WGSL_SEM_STRUCT_H_
#define SRC_TINT_LANG_WGSL_SEM_STRUCT_H_
#include <optional>
#include "src/tint/lang/core/builtin/address_space.h"
#include "src/tint/lang/core/type/struct.h"
#include "src/tint/lang/core/type/type.h"
#include "src/tint/lang/wgsl/ast/struct.h"
#include "src/tint/utils/containers/vector.h"
#include "src/tint/utils/symbol/symbol.h"
// Forward declarations
namespace tint::ast {
class StructMember;
} // namespace tint::ast
namespace tint::sem {
class StructMember;
} // namespace tint::sem
namespace tint::type {
class StructMember;
} // namespace tint::type
namespace tint::sem {
/// Struct holds the semantic information for structures.
/// Unlike type::Struct, sem::Struct has an AST declaration node.
class Struct final : public Castable<Struct, type::Struct> {
public:
/// Constructor
/// @param declaration the AST structure declaration
/// @param name the name of the structure
/// @param members the structure members
/// @param align the byte alignment of the structure
/// @param size the byte size of the structure
/// @param size_no_padding size of the members without the end of structure alignment padding
Struct(const ast::Struct* declaration,
Symbol name,
VectorRef<const StructMember*> members,
uint32_t align,
uint32_t size,
uint32_t size_no_padding);
/// Destructor
~Struct() override;
/// @returns the struct
const ast::Struct* Declaration() const { return declaration_; }
/// @returns the members of the structure
VectorRef<const StructMember*> Members() const {
return Base::Members().ReinterpretCast<const StructMember*>();
}
private:
ast::Struct const* const declaration_;
};
/// StructMember holds the semantic information for structure members.
/// Unlike type::StructMember, sem::StructMember has an AST declaration node.
class StructMember final : public Castable<StructMember, type::StructMember> {
public:
/// Constructor
/// @param declaration the AST declaration node
/// @param name the name of the structure member
/// @param type the type of the member
/// @param index the index of the member in the structure
/// @param offset the byte offset from the base of the structure
/// @param align the byte alignment of the member
/// @param size the byte size of the member
/// @param attributes the optional attributes
StructMember(const ast::StructMember* declaration,
Symbol name,
const type::Type* type,
uint32_t index,
uint32_t offset,
uint32_t align,
uint32_t size,
const type::StructMemberAttributes& attributes);
/// Destructor
~StructMember() override;
/// @returns the AST declaration node
const ast::StructMember* Declaration() const { return declaration_; }
/// @returns the structure that owns this member
const sem::Struct* Struct() const { return static_cast<const sem::Struct*>(Base::Struct()); }
private:
const ast::StructMember* const declaration_;
};
} // namespace tint::sem
#endif // SRC_TINT_LANG_WGSL_SEM_STRUCT_H_