15af2b2f06
Original-commit: flang-compiler/f18@a550cbd4c0 Reviewed-on: https://github.com/flang-compiler/f18/pull/496 Tree-same-pre-rewrite: false
71 lines
2.4 KiB
C++
71 lines
2.4 KiB
C++
// Copyright (c) 2018-2019, 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_SOURCE_H_
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#define FORTRAN_PARSER_SOURCE_H_
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// Source file content is lightly normalized when the file is read.
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// - Line ending markers are converted to single newline characters
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// - A newline character is added to the last line of the file if one is needed
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// - A Unicode byte order mark is recognized if present.
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#include "characters.h"
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#include <cstddef>
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#include <sstream>
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#include <string>
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#include <utility>
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#include <vector>
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namespace Fortran::parser {
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std::string DirectoryName(std::string path);
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std::string LocateSourceFile(
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std::string name, const std::vector<std::string> &searchPath);
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class SourceFile {
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public:
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explicit SourceFile(Encoding e) : encoding_{e} {}
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~SourceFile();
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std::string path() const { return path_; }
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const char *content() const { return content_; }
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std::size_t bytes() const { return bytes_; }
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std::size_t lines() const { return lineStart_.size(); }
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Encoding encoding() const { return encoding_; }
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bool Open(std::string path, std::stringstream *error);
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bool ReadStandardInput(std::stringstream *error);
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void Close();
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std::pair<int, int> FindOffsetLineAndColumn(std::size_t) const;
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std::size_t GetLineStartOffset(int lineNumber) const {
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return lineStart_.at(lineNumber - 1);
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}
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private:
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bool ReadFile(std::string errorPath, std::stringstream *error);
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void IdentifyPayload();
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void RecordLineStarts();
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std::string path_;
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int fileDescriptor_{-1};
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bool isMemoryMapped_{false};
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const char *address_{nullptr}; // raw content
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std::size_t size_{0};
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const char *content_{nullptr}; // usable content
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std::size_t bytes_{0};
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std::vector<std::size_t> lineStart_;
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std::string normalized_;
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Encoding encoding_{Encoding::UTF_8};
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};
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}
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#endif // FORTRAN_PARSER_SOURCE_H_
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