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/*
* Copyright 2017 The Native Object Protocols Authors
*
* 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 LIBNOP_TEST_TEST_WRITER_H_
#define LIBNOP_TEST_TEST_WRITER_H_
#include <cstdint>
#include <iterator>
#include <vector>
#include <nop/base/encoding.h>
#include <nop/base/utility.h>
#include <nop/types/file_handle.h>
namespace nop {
class TestWriter {
public:
TestWriter() = default;
Status<void> Prepare(std::size_t size) {
data_.reserve(data_.size() + size);
return {};
}
Status<void> Write(std::uint8_t byte) {
data_.push_back(byte);
return {};
}
Status<void> Write(const void* begin, const void* end) {
using Byte = std::uint8_t;
const Byte* begin_byte = static_cast<const Byte*>(begin);
const Byte* end_byte = static_cast<const Byte*>(end);
const std::size_t length_bytes = std::distance(begin_byte, end_byte);
// Extend the buffer to accommodate the data.
const std::size_t start_offset = data_.size();
data_.resize(start_offset + length_bytes);
std::copy(begin_byte, end_byte, &data_[start_offset]);
return {};
}
Status<void> Skip(std::size_t padding_bytes,
std::uint8_t padding_value = 0x00) {
std::vector<std::uint8_t> padding(padding_bytes, padding_value);
return Write(&*padding.begin(), &*padding.end());
}
template <typename HandleType>
Status<HandleReference> PushHandle(const HandleType& handle) {
if (handle) {
HandleReference handle_reference = handles_.size();
handles_.push_back(handle.get());
return {handle_reference};
} else {
return {kEmptyHandleReference};
}
}
void clear() {
data_.clear();
handles_.clear();
}
const std::vector<uint8_t>& data() const { return data_; }
const std::vector<int>& handles() const { return handles_; }
private:
std::vector<std::uint8_t> data_;
std::vector<int> handles_;
TestWriter(const TestWriter&) = delete;
void operator=(const TestWriter&) = delete;
};
} // namespace nop
#endif // LIBNOP_TEST_TEST_WRITER_H_
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