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#pragma once
#include <cstddef>
#include <cstdint>
#include <span>
class DataStream
{
public:
enum Endianness
{
BigEndian,
LittleEndian,
};
private:
Endianness mEndian;
public:
DataStream();
~DataStream();
Endianness GetEndianness() const;
void SetEndianness(Endianness endianness);
void ReadBytes(size_t byteCount, std::byte* buffer);
void ReadBytes(size_t byteCount, char* buffer);
void ReadBytes(size_t byteCount, signed char* buffer);
void ReadBytes(size_t byteCount, unsigned char* buffer);
template <class TInserter>
void ReadBytes(size_t byteCount, TInserter&& inserter)
{
for (size_t i = 0; i < byteCount; ++i) {
uint8_t byte;
Read(byte);
inserter = byte;
}
}
void WriteBytes(size_t byteCount, const std::byte* buffer);
void WriteBytes(size_t byteCount, const char* buffer);
void WriteBytes(size_t byteCount, const signed char* buffer);
void WriteBytes(size_t byteCount, const unsigned char* buffer);
template <class TIterator>
void WriteBytes(TIterator&& begin, TIterator&& end)
{
for (; begin != end; ++begin) {
uint8_t byte = *begin;
Write(byte);
}
}
void Write(int8_t n);
void Write(int16_t n);
void Write(int32_t n);
void Write(int64_t n);
void Read(int8_t& n);
void Read(int16_t& n);
void Read(int32_t& n);
void Read(int64_t& n);
void Write(uint8_t n);
void Write(uint16_t n);
void Write(uint32_t n);
void Write(uint64_t n);
void Read(uint8_t& n);
void Read(uint16_t& n);
void Read(uint32_t& n);
void Read(uint64_t& n);
void Write(float n);
void Write(double n);
void Read(float& n);
void Read(double& n);
template <class TObject>
requires requires(TObject obj)
{
obj.ReadFromDataStream(std::declval<DataStream>());
}
void ReadObject(TObject& obj)
{
obj.ReadFromDataStream(*this);
}
template <class TObject>
requires requires(TObject obj)
{
// Let ADL happen
ReadFromDataStream(std::declval<DataStream>(), obj);
}
void ReadObject(TObject& obj)
{
ReadFromDataStream(*this, obj);
}
template <class TObject>
requires requires(TObject obj)
{
obj.WriteToDataStream(std::declval<DataStream>());
}
void WriteObject(TObject& obj)
{
obj.ReadFromDataStream(*this);
}
template <class TObject>
requires requires(TObject obj)
{
// Let ADL happen
WriteToDataStream(std::declval<DataStream>(), obj);
}
void WriteObject(TObject& obj)
{
WriteToDataStream(*this, obj);
}
};
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