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// Copyright 2013 Google Inc. All Rights Reserved.
//
// 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.
#include <sstream>
#include "util/status.h"
using ::std::ostream;
using ::std::string;
namespace util {
namespace {
const Status& GetOk() {
static const Status status;
return status;
}
const Status& GetCancelled() {
static const Status status(::util::error::CANCELLED, "");
return status;
}
const Status& GetUnknown() {
static const Status status(::util::error::UNKNOWN, "");
return status;
}
} // namespace
Status::Status() : code_(::util::error::OK), message_("") {
}
Status::Status(::util::error::Code error, const string& error_message)
: code_(error), message_(error_message) {
if (code_ == ::util::error::OK) {
message_.clear();
}
}
Status::Status(const Status& other)
: code_(other.code_), message_(other.message_) {
}
Status& Status::operator=(const Status& other) {
code_ = other.code_;
message_ = other.message_;
return *this;
}
const Status& Status::OK = GetOk();
const Status& Status::CANCELLED = GetCancelled();
const Status& Status::UNKNOWN = GetUnknown();
string Status::ToString() const {
if (code_ == ::util::error::OK) {
return "OK";
}
std::ostringstream oss;
oss << code_ << ": " << message_;
return oss.str();
}
string ErrorCodeString(util::error::Code error) {
switch (error) {
case util::error::OK:
return "OK";
case util::error::CANCELLED:
return "CANCELLED";
case util::error::UNKNOWN:
return "UNKNOWN";
case util::error::INVALID_ARGUMENT:
return "INVALID_ARGUMENT";
case util::error::DEADLINE_EXCEEDED:
return "DEADLINE_EXCEEDED";
case util::error::NOT_FOUND:
return "NOT_FOUND";
case util::error::ALREADY_EXISTS:
return "ALREADY_EXISTS";
case util::error::PERMISSION_DENIED:
return "PERMISSION_DENIED";
case util::error::RESOURCE_EXHAUSTED:
return "RESOURCE_EXHAUSTED";
case util::error::FAILED_PRECONDITION:
return "FAILED_PRECONDITION";
case util::error::ABORTED:
return "ABORTED";
case util::error::OUT_OF_RANGE:
return "OUT_OF_RANGE";
case util::error::UNIMPLEMENTED:
return "UNIMPLEMENTED";
case util::error::INTERNAL:
return "INTERNAL";
case util::error::UNAVAILABLE:
return "UNAVAILABLE";
case util::error::DATA_LOSS:
return "DATA_LOSS";
}
// Avoid using a "default" in the switch, so that the compiler can
// give us a warning, but still provide a fallback here.
return std::to_string(error);
}
extern ostream& operator<<(ostream& os, util::error::Code code) {
os << ErrorCodeString(code);
return os;
}
extern ostream& operator<<(ostream& os, const Status& other) {
os << other.ToString();
return os;
}
} // namespace util
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