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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_READER_H_
#define LIBNOP_TEST_TEST_READER_H_
#include <cstddef>
#include <cstdint>
#include <iterator>
#include <vector>
#include <nop/base/encoding.h>
#include <nop/base/handle.h>
#include <nop/base/utility.h>
namespace nop {
class TestReader {
public:
TestReader() = default;
Status<void> Ensure(std::size_t size) {
if (data_.size() - index_ < size)
return ErrorStatus::ReadLimitReached;
else
return {};
}
Status<void> Read(std::uint8_t* byte) {
if (index_ < data_.size()) {
*byte = data_[index_++];
return {};
} else {
return ErrorStatus::ReadLimitReached;
}
}
Status<void> Read(void* begin, void* end) {
using Byte = std::uint8_t;
Byte* begin_byte = static_cast<Byte*>(begin);
Byte* end_byte = static_cast<Byte*>(end);
const std::size_t length_bytes = std::distance(begin_byte, end_byte);
if (length_bytes > (data_.size() - index_))
return ErrorStatus::ReadLimitReached;
std::copy(&data_[index_], &data_[index_ + length_bytes], begin_byte);
index_ += length_bytes;
return {};
}
Status<void> Skip(std::size_t padding_bytes) {
std::vector<std::uint8_t> padding(padding_bytes);
return Read(&*padding.begin(), &*padding.end());
}
template <typename HandleType>
Status<HandleType> GetHandle(HandleReference handle_reference) {
if (handle_reference < 0)
return {HandleType{}};
else if (handle_reference < static_cast<HandleReference>(handles_.size()))
return {HandleType{handles_[handle_reference]}};
else
return ErrorStatus::InvalidHandleReference;
}
void Set(std::vector<std::uint8_t> data) {
data_ = std::move(data);
index_ = 0;
}
void SetHandles(std::vector<int> handles) { handles_ = std::move(handles); }
private:
std::vector<std::uint8_t> data_;
std::vector<int> handles_;
std::size_t index_{0};
TestReader(const TestReader&) = delete;
void operator=(const TestReader&) = delete;
};
} // namespace nop
#endif // LIBNOP_TEST_TEST_READER_H_
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