69 lines
1.8 KiB
C#
69 lines
1.8 KiB
C#
using System;
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using System.Runtime.CompilerServices;
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using System.Text;
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namespace ImGuiNET
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{
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public unsafe struct RangeAccessor<T> where T : struct
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{
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private static readonly int s_sizeOfT = Unsafe.SizeOf<T>();
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public readonly void* Data;
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public readonly int Count;
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public RangeAccessor(IntPtr data, int count) : this(data.ToPointer(), count) { }
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public RangeAccessor(void* data, int count)
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{
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Data = data;
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Count = count;
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}
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public ref T this[int index]
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{
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get
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{
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if (index < 0 || index >= Count)
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{
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throw new IndexOutOfRangeException();
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}
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return ref Unsafe.AsRef<T>((byte*)Data + s_sizeOfT * index);
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}
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}
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}
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public unsafe struct RangePtrAccessor<T> where T : struct
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{
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public readonly void* Data;
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public readonly int Count;
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public RangePtrAccessor(IntPtr data, int count) : this(data.ToPointer(), count) { }
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public RangePtrAccessor(void* data, int count)
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{
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Data = data;
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Count = count;
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}
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public T this[int index]
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{
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get
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{
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if (index < 0 || index >= Count)
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{
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throw new IndexOutOfRangeException();
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}
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return Unsafe.Read<T>((byte*)Data + sizeof(void*) * index);
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}
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}
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}
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public static class RangeAccessorExtensions
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{
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public static unsafe string GetStringASCII(this RangeAccessor<byte> stringAccessor)
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{
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return Encoding.ASCII.GetString((byte*)stringAccessor.Data, stringAccessor.Count);
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}
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}
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}
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