27be6855bf
Original-commit: flang-compiler/f18@6b5e23ba28 Reviewed-on: https://github.com/flang-compiler/f18/pull/165 Tree-same-pre-rewrite: false
48 lines
1.7 KiB
C++
48 lines
1.7 KiB
C++
// Copyright (c) 2018, NVIDIA CORPORATION. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef FORTRAN_SEMANTICS_EXPRESSION_H_
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#define FORTRAN_SEMANTICS_EXPRESSION_H_
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#include "../evaluate/expression.h"
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#include "../parser/message.h"
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#include "../parser/parse-tree.h"
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#include <cinttypes>
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#include <optional>
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namespace Fortran::semantics {
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class ExpressionAnalyzer {
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public:
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using KindParam = std::int64_t;
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using Result = std::optional<evaluate::GenericExpr>;
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ExpressionAnalyzer(evaluate::FoldingContext &c, KindParam dIK)
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: context_{c}, defaultIntegerKind_{dIK} {}
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evaluate::FoldingContext &context() { return context_; }
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KindParam defaultIntegerKind() const { return defaultIntegerKind_; }
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// Performs semantic checking on an expression. If successful,
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// returns its typed expression representation.
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Result Analyze(const parser::Expr &);
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KindParam Analyze(const std::optional<parser::KindParam> &,
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KindParam defaultKind, KindParam kanjiKind = -1 /* not allowed here */);
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private:
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evaluate::FoldingContext context_;
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KindParam defaultIntegerKind_{4};
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};
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} // namespace Fortran::semantics
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#endif // FORTRAN_SEMANTICS_EXPRESSION_H_
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