log_severity.h

/*    Copyright 2013 10gen Inc.
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */

#pragma once

#include <iosfwd>
#include <string>

#include "mongo/base/string_data.h"
#include "mongo/client/export_macros.h"

namespace mongo {
namespace logger {

class MONGO_CLIENT_API LogSeverity {
public:
    //
    // Static factory methods for getting LogSeverity objects of the various severity levels.
    //

    static inline LogSeverity Severe();
    static inline LogSeverity Error();
    static inline LogSeverity Warning();
    static inline LogSeverity Info();
    static inline LogSeverity Log();  // === Debug(0)
    static inline LogSeverity Debug(int debugLevel);

    static inline LogSeverity cast(int);

    inline int toInt() const;

    inline LogSeverity moreSevere() const;

    inline LogSeverity lessSevere() const;

    inline std::string toString() const;

    StringData toStringData() const;

    char toChar() const;

    //
    // Comparison operations.
    //

    inline bool operator==(const LogSeverity other) const;

    inline bool operator!=(const LogSeverity other) const;

    inline bool operator<(const LogSeverity other) const;

    inline bool operator<=(const LogSeverity other) const;

    inline bool operator>(const LogSeverity other) const;

    inline bool operator>=(const LogSeverity other) const;

private:
    explicit LogSeverity(int severity) : _severity(severity) {}

    int _severity;
};

MONGO_CLIENT_API std::ostream& MONGO_CLIENT_FUNC operator<<(std::ostream& os, LogSeverity severity);

}  // namespace logger
}  // namespace mongo

#include "mongo/logger/log_severity-inl.h"