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/*
* Copyright (C) 2013 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.
*/
#ifndef ART_COMPILER_LINKER_OUTPUT_STREAM_H_
#define ART_COMPILER_LINKER_OUTPUT_STREAM_H_
#include <ostream>
#include <string>
#include "base/macros.h"
namespace art {
namespace linker {
enum Whence {
kSeekSet = SEEK_SET,
kSeekCurrent = SEEK_CUR,
kSeekEnd = SEEK_END,
};
std::ostream& operator<<(std::ostream& os, const Whence& rhs);
class OutputStream {
public:
explicit OutputStream(const std::string& location) : location_(location) {}
virtual ~OutputStream() {}
const std::string& GetLocation() const {
return location_;
}
virtual bool WriteFully(const void* buffer, size_t byte_count) = 0;
virtual off_t Seek(off_t offset, Whence whence) = 0;
/*
* Flushes the stream. Returns whether the operation was successful.
*
* An OutputStream may delay reporting errors from WriteFully() or
* Seek(). In that case, Flush() shall report any pending error.
*/
virtual bool Flush() = 0;
private:
const std::string location_;
DISALLOW_COPY_AND_ASSIGN(OutputStream);
};
} // namespace linker
} // namespace art
#endif // ART_COMPILER_LINKER_OUTPUT_STREAM_H_