f7e7cb349b
Original-commit: flang-compiler/f18@aa7f55e15f Reviewed-on: https://github.com/flang-compiler/f18/pull/217
46 lines
1.5 KiB
C++
46 lines
1.5 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_PARSER_DEBUG_PARSER_H_
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#define FORTRAN_PARSER_DEBUG_PARSER_H_
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// Implements the parser with syntax "(YOUR MESSAGE HERE)"_debug for use
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// in temporary modifications to the grammar intended for tracing the
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// flow of the parsers. Not to be used in production.
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#include "basic-parsers.h"
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#include "parse-state.h"
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#include <cstddef>
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#include <optional>
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namespace Fortran::parser {
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class DebugParser {
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public:
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using resultType = Success;
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constexpr DebugParser(const DebugParser &) = default;
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constexpr DebugParser(const char *str, std::size_t n)
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: str_{str}, length_{n} {}
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std::optional<Success> Parse(ParseState &) const;
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private:
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const char *const str_;
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const std::size_t length_;
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};
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constexpr DebugParser operator""_debug(const char str[], std::size_t n) {
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return DebugParser{str, n};
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}
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}
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#endif // FORTRAN_PARSER_DEBUG_PARSER_H_
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