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/*
* 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 <binder/Status.h>
namespace android {
namespace binder {
Status Status::fromExceptionCode(int32_t exception_code) {
return Status(exception_code, "");
}
Status Status::fromStatusT(status_t status) {
Status ret;
ret.setFromStatusT(status);
return ret;
}
Status Status::ok() {
return Status();
}
Status::Status(int32_t exception_code, const String8& message)
: mException(exception_code),
mMessage(message) {}
Status::Status(int32_t exception_code, const char* message)
: mException(exception_code),
mMessage(message) {}
status_t Status::readFromParcel(const Parcel& parcel) {
status_t status = parcel.readInt32(&mException);
if (status != OK) {
setFromStatusT(status);
return status;
}
// Skip over fat response headers. Not used (or propagated) in native code.
if (mException == EX_HAS_REPLY_HEADER) {
// Note that the header size includes the 4 byte size field.
const int32_t header_start = parcel.dataPosition();
int32_t header_size;
status = parcel.readInt32(&header_size);
if (status != OK) {
setFromStatusT(status);
return status;
}
parcel.setDataPosition(header_start + header_size);
// And fat response headers are currently only used when there are no
// exceptions, so act like there was no error.
mException = EX_NONE;
}
if (mException == EX_NONE) {
return status;
}
// The remote threw an exception. Get the message back.
mMessage = String8(parcel.readString16());
return status;
}
status_t Status::writeToParcel(Parcel* parcel) const {
status_t status = parcel->writeInt32(mException);
if (status != OK) { return status; }
if (mException == EX_NONE) {
// We have no more information to write.
return status;
}
status = parcel->writeString16(String16(mMessage));
return status;
}
void Status::setFromStatusT(status_t status) {
switch (status) {
case NO_ERROR:
mException = EX_NONE;
mMessage.clear();
break;
case UNEXPECTED_NULL:
mException = EX_NULL_POINTER;
mMessage.setTo("Unexpected null reference in Parcel");
break;
default:
mException = EX_TRANSACTION_FAILED;
mMessage.setTo("Transaction failed");
break;
}
}
void Status::setException(int32_t ex, const String8& message) {
mException = ex;
mMessage.setTo(message);
}
void Status::getException(int32_t* returned_exception,
String8* returned_message) const {
if (returned_exception) {
*returned_exception = mException;
}
if (returned_message) {
returned_message->setTo(mMessage);
}
}
String8 Status::toString8() const {
String8 ret;
if (mException == EX_NONE) {
ret.append("No error");
} else {
ret.appendFormat("Status(%d): '", mException);
ret.append(String8(mMessage));
ret.append("'");
}
return ret;
}
} // namespace binder
} // namespace android
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