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// Copyright 2008 Dolphin Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include <cstring>
#include "Common/CommonTypes.h"
#include "Common/Inline.h"
#include "Common/Swap.h"
class DataReader
{
public:
DataReader() = default;
DataReader(u8* src, u8* end_) : buffer(src), end(end_) {}
u8* GetPointer() { return buffer; }
const u8* GetPointer() const { return buffer; }
DataReader& operator=(u8* src)
{
buffer = src;
return *this;
}
size_t size() const { return end - buffer; }
template <typename T, bool swapped = true>
DOLPHIN_FORCE_INLINE T Peek(int offset = 0) const
{
T data;
std::memcpy(&data, &buffer[offset], sizeof(T));
if constexpr (swapped)
data = Common::FromBigEndian(data);
return data;
}
template <typename T, bool swapped = true>
DOLPHIN_FORCE_INLINE T Read()
{
const T result = Peek<T, swapped>();
buffer += sizeof(T);
return result;
}
template <typename T, bool swapped = false>
DOLPHIN_FORCE_INLINE void Write(T data)
{
if constexpr (swapped)
data = Common::FromBigEndian(data);
std::memcpy(buffer, &data, sizeof(T));
buffer += sizeof(T);
}
template <typename T = u8>
void Skip(size_t data = 1)
{
buffer += sizeof(T) * data;
}
private:
u8* __restrict buffer = nullptr;
u8* end = nullptr;
};
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