tdesktop/Telegram/SourceFiles/codegen/common/clean_file_reader.h

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/*
This file is part of Telegram Desktop,
the official desktop application for the Telegram messaging service.
For license and copyright information please follow this link:
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
*/
#pragma once
#include <QtCore/QString>
#include "codegen/common/clean_file.h"
namespace codegen {
namespace common {
// Wrapper allows you to read forward the CleanFile without overflow checks.
class CleanFileReader {
public:
explicit CleanFileReader(const QString &filepath) : file_(filepath) {
}
explicit CleanFileReader(const QByteArray &content, const QString &filepath = QString()) : file_(content, filepath) {
}
bool read() {
if (!file_.read()) {
return false;
}
pos_ = file_.data();
end_ = file_.end();
return true;
}
bool atEnd() const {
return (pos_ == end_);
}
char currentChar() const {
return atEnd() ? 0 : *pos_;
}
bool skipChar() {
if (atEnd()) {
return false;
}
++pos_;
return true;
}
const char *currentPtr() const {
return pos_;
}
int charsLeft() const {
return (end_ - pos_);
}
QVector<QByteArray> singleLineComments() const {
return file_.singleLineComments();
}
// Log error to std::cerr with 'code' at line number 'line' in data().
LogStream logError(int code, int line) const {
return std::forward<LogStream>(file_.logError(code, line));
}
private:
CleanFile file_;
const char *pos_ = nullptr;
const char *end_ = nullptr;
};
} // namespace common
} // namespace codegen