base/Status.cpp

/*
 * Copyright (C) 2015 The Android Open Source Project
 *
 * 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 <hidl/Status.h>

namespace android {
namespace hardware {

Status Status::ok() {
    return Status();
}

Status Status::fromExceptionCode(int32_t exceptionCode) {
    return Status(exceptionCode, OK);
}

Status Status::fromExceptionCode(int32_t exceptionCode,
                                 const String8& message) {
    return Status(exceptionCode, OK, message);
}

Status Status::fromServiceSpecificError(int32_t serviceSpecificErrorCode) {
    return Status(EX_SERVICE_SPECIFIC, serviceSpecificErrorCode);
}

Status Status::fromServiceSpecificError(int32_t serviceSpecificErrorCode,
                                        const String8& message) {
    return Status(EX_SERVICE_SPECIFIC, serviceSpecificErrorCode, message);
}

Status Status::fromStatusT(status_t status) {
    Status ret;
    ret.setFromStatusT(status);
    return ret;
}

Status::Status(int32_t exceptionCode, int32_t errorCode)
    : mException(exceptionCode),
      mErrorCode(errorCode) {}

Status::Status(int32_t exceptionCode, int32_t errorCode, const String8& message)
    : mException(exceptionCode),
      mErrorCode(errorCode),
      mMessage(message) {}

void Status::setException(int32_t ex, const String8& message) {
    mException = ex;
    mErrorCode = NO_ERROR;  // an exception, not a transaction failure.
    mMessage.setTo(message);
}

void Status::setServiceSpecificError(int32_t errorCode, const String8& message) {
    setException(EX_SERVICE_SPECIFIC, message);
    mErrorCode = errorCode;
}

void Status::setFromStatusT(status_t status) {
    mException = (status == NO_ERROR) ? EX_NONE : EX_TRANSACTION_FAILED;
    mErrorCode = status;
    mMessage.clear();
}

String8 Status::toString8() const {
    String8 ret;
    if (mException == EX_NONE) {
        ret.append("No error");
    } else {
        ret.appendFormat("Status(%d): '", mException);
        if (mException == EX_SERVICE_SPECIFIC ||
            mException == EX_TRANSACTION_FAILED) {
            ret.appendFormat("%d: ", mErrorCode);
        }
        ret.append(String8(mMessage));
        ret.append("'");
    }
    return ret;
}

std::stringstream& operator<< (std::stringstream& stream, const Status& s) {
    stream << s.toString8().string();
    return stream;
}

}  // namespace hardware
}  // namespace android