llvm/flang/lib/evaluate/variable.h
2018-07-09 16:25:57 -07:00

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1.8 KiB
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// Copyright (c) 2018, NVIDIA CORPORATION. All rights reserved.
//
// 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 FORTRAN_EVALUATE_VARIABLE_H_
#define FORTRAN_EVALUATE_VARIABLE_H_
#include "expression.h"
#include <memory>
#include <optional>
#include <variant>
namespace Fortran::evaluate {
struct Designator;
struct DataObject {
semantics::Symbol &object;
};
struct Component {
semantics::Symbol &component;
std::variant<std::unique_ptr<DataObject>, std::unique_ptr<Designator>>> u;
};
using SubscriptExpr = DefaultIntExpr;
struct Triplet {
std::optional<DefaultIntExpr> lower, upper, stride;
};
struct Subscript {
std::variant<DefaultIntExpr, Triplet>;
};
struct Subscripted {
std::vector<std::unique_ptr<Subscript>> subscript;
std::variant<std::unique_ptr<DataObject>, std::unique_ptr<Component>> u;
};
struct CoarrayRef {
std::vector<std::unique_ptr<SubscriptExpr>>;
// TODO R926 image selector specs
std::variant<std::unique_ptr<Subscripted>, std::unique_ptr<Component>,
std::unique_ptr<DataObject>> u;
};
struct Designator {
Designator() = delete;
std::variant<std::unique_ptr<Object>, std::unique_ptr<Component>,
std::unique_ptr<Subscripted>, std::unique_ptr<CoarrayRef>> u;
};
struct Substring {
};
} // namespace Fortran::evaluate
#endif // FORTRAN_EVALUATE_VARIABLE_H_