eea7ceb31d
This behaves mostly like a pointer, but pointer maths works in bytes, not the native object size. It avoids casting to char* and back when doing byte-based pointer math, making the code easier to read. Change-Id: I6a8681a398345f0c7d419a2cfe7244d972ffa62f Reviewed-on: https://review.haiku-os.org/c/1086 Reviewed-by: waddlesplash <waddlesplash@gmail.com>
27 lines
709 B
C++
27 lines
709 B
C++
/*
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* Copyright 2019, Adrien Destugues, pulkomandy@pulkomandy.tk.
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* Distributed under the terms of the MIT License.
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*/
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#ifndef _BYTE_POINTER_H
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#define _BYTE_POINTER_H
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#include <stdlib.h>
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// Behaves like a char* pointer, but -> and & return the right pointed type.
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// Assumes the offsets passed to + and += maintain the alignment for the type.
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template<class T> struct BytePointer {
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char* address;
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BytePointer(void* base) { address = (char*)base; }
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T* operator&() { return reinterpret_cast<T*>(address); }
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T* operator->() { return reinterpret_cast<T*>(address); }
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void operator+=(size_t offset) { address += offset; }
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char* operator+(size_t offset) const { return address + offset; }
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};
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#endif
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