/*    Copyright 2012 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

namespace mongo {

inline Status Status::OK() {
    return Status();
}

inline Status::Status(const Status& other) : _error(other._error) {
    ref(_error);
}

inline Status& Status::operator=(const Status& other) {
    ref(other._error);
    unref(_error);
    _error = other._error;
    return *this;
}

#if __cplusplus >= 201103L
inline Status::Status(Status&& other) noexcept : _error(other._error) {
    other._error = nullptr;
}

inline Status& Status::operator=(Status&& other) noexcept {
    unref(_error);
    _error = other._error;
    other._error = nullptr;
    return *this;
}
#endif  // __cplusplus >= 201103L

inline Status::~Status() {
    unref(_error);
}

inline bool Status::isOK() const {
    return code() == ErrorCodes::OK;
}

inline ErrorCodes::Error Status::code() const {
    return _error ? _error->code : ErrorCodes::OK;
}

inline std::string Status::codeString() const {
    return ErrorCodes::errorString(code());
}

inline std::string Status::reason() const {
    return _error ? _error->reason : std::string();
}

inline int Status::location() const {
    return _error ? _error->location : 0;
}

inline AtomicUInt32::WordType Status::refCount() const {
    return _error ? _error->refs.load() : 0;
}

inline Status::Status() : _error(NULL) {}

inline void Status::ref(ErrorInfo* error) {
    if (error)
        error->refs.fetchAndAdd(1);
}

inline void Status::unref(ErrorInfo* error) {
    if (error && (error->refs.subtractAndFetch(1) == 0))
        delete error;
}

inline bool MONGO_CLIENT_FUNC operator==(const ErrorCodes::Error lhs, const Status& rhs) {
    return rhs == lhs;
}

inline bool MONGO_CLIENT_FUNC operator!=(const ErrorCodes::Error lhs, const Status& rhs) {
    return rhs != lhs;
}

}  // namespace mongo
