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// Copyright 2022 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_SEM_LOAD_H_
#define SRC_TINT_SEM_LOAD_H_
#include "src/tint/sem/value_expression.h"
#include "src/tint/type/reference.h"
namespace tint::sem {
/// Load is a semantic expression which represents the load of a reference to a non-reference value.
/// Loads from reference types are implicit in WGSL, so the Load semantic node shares the same AST
/// node as the inner semantic node.
class Load final : public utils::Castable<Load, ValueExpression> {
public:
/// Constructor
/// @param reference the reference expression being loaded
/// @param statement the statement that owns this expression
Load(const ValueExpression* reference, const Statement* statement);
/// Destructor
~Load() override;
/// @return the reference being loaded
const ValueExpression* Reference() const { return reference_; }
/// @returns the type of the loaded reference.
const type::Reference* ReferenceType() const {
return static_cast<const type::Reference*>(reference_->Type());
}
private:
ValueExpression const* const reference_;
};
} // namespace tint::sem
#endif // SRC_TINT_SEM_LOAD_H_