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//===-- include/flang/Parser/source.h ---------------------------*- C++ -*-===//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// Source file content is lightly normalized when the file is read.
// - Line ending markers are converted to single newline characters
// - A newline character is added to the last line of the file if one is needed
// - A Unicode byte order mark is recognized if present.
#include "characters.h"
#include "llvm/Support/MemoryBuffer.h"
#include <cstddef>
#include <list>
#include <optional>
#include <string>
#include <utility>
#include <vector>
namespace llvm {
class raw_ostream;
namespace Fortran::parser {
std::string DirectoryName(std::string path);
std::optional<std::string> LocateSourceFile(
std::string name, const std::list<std::string> &searchPath);
class SourceFile;
struct SourcePosition {
const SourceFile &file;
int line, column;
class SourceFile {
explicit SourceFile(Encoding e) : encoding_{e} {}
std::string path() const { return path_; }
llvm::ArrayRef<char> content() const {
return buf_->getBuffer().slice(bom_end_, buf_end_ - bom_end_);
std::size_t bytes() const { return content().size(); }
std::size_t lines() const { return lineStart_.size(); }
Encoding encoding() const { return encoding_; }
bool Open(std::string path, llvm::raw_ostream &error);
bool ReadStandardInput(llvm::raw_ostream &error);
void Close();
SourcePosition FindOffsetLineAndColumn(std::size_t) const;
std::size_t GetLineStartOffset(int lineNumber) const {
return - 1);
void ReadFile();
void IdentifyPayload();
void RecordLineStarts();
std::string path_;
std::unique_ptr<llvm::WritableMemoryBuffer> buf_;
std::vector<std::size_t> lineStart_;
std::size_t bom_end_{0};
std::size_t buf_end_;
Encoding encoding_;
} // namespace Fortran::parser