dolphin/Source/Core/VideoCommon/DataReader.h
Lioncash 3f210836ad Compiler: Rename __forceinline define to DOLPHIN_FORCE_INLINE
This is much better as prefixed double underscores are reserved for the
implementation when it comes to identifiers. Another reason its better,
is that, on Windows, where __forceinline is a compiler built-in, with
the previous define, header inclusion software that detects unnecessary
includes will erroneously flag usages of Compiler.h as unnecessary
(despite being necessary on other platforms). So we define a macro
that's used by Windows and other platforms to ensure this doesn't
happen.
2018-06-09 12:20:25 -04:00

67 lines
1.3 KiB
C++

// Copyright 2008 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#pragma once
#include <cstring>
#include "Common/CommonTypes.h"
#include "Common/Compiler.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 (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 (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;
};