92 lines
3.2 KiB
C#
92 lines
3.2 KiB
C#
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using System;
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namespace Unity.Collections.LowLevel.Unsafe.NotBurstCompatible
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{
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/// <summary>
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/// Provides some extension methods for various collections.
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/// </summary>
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public static class Extensions
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{
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/// <summary>
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/// Returns a new managed array with all the elements copied from a set.
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/// </summary>
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/// <typeparam name="T">The type of elements.</typeparam>
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/// <param name="set">The set whose elements are copied to the array.</param>
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/// <returns>A new managed array with all the elements copied from a set.</returns>
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public static T[] ToArray<T>(this UnsafeParallelHashSet<T> set)
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where T : unmanaged, IEquatable<T>
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{
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var array = set.ToNativeArray(Allocator.TempJob);
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var managed = array.ToArray();
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array.Dispose();
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return managed;
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}
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/// <summary>
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/// Adds the content of a string to this append buffer.
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/// </summary>
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/// <remarks>The length of the string is written as an int to the buffer before the characters are written.</remarks>
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/// <param name="buffer">The buffer to which to add the string.</param>
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/// <param name="value">The string to copy.</param>
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[ExcludeFromBurstCompatTesting("Takes managed string")]
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public static unsafe void AddNBC(ref this UnsafeAppendBuffer buffer, string value)
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{
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if (value != null)
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{
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buffer.Add(value.Length);
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fixed (char* ptr = value)
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{
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buffer.Add(ptr, sizeof(char) * value.Length);
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}
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}
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else
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{
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buffer.Add(-1);
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}
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}
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/// <summary>
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/// Returns an unmanaged byte array with a copy of this buffer's contents.
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/// </summary>
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/// <param name="buffer">This buffer.</param>
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/// <returns>An unmanaged byte array with a copy of this buffer's contents.</returns>
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[ExcludeFromBurstCompatTesting("Returns managed array")]
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public static unsafe byte[] ToBytesNBC(ref this UnsafeAppendBuffer buffer)
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{
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var dst = new byte[buffer.Length];
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fixed (byte* dstPtr = dst)
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{
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UnsafeUtility.MemCpy(dstPtr, buffer.Ptr, buffer.Length);
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}
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return dst;
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}
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/// <summary>
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/// Reads a string from this buffer reader.
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/// </summary>
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/// <param name="value">Outputs the string.</param>
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/// <param name="reader">This reader.</param>
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[ExcludeFromBurstCompatTesting("Managed string out argument")]
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public static unsafe void ReadNextNBC(ref this UnsafeAppendBuffer.Reader reader, out string value)
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{
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int length;
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reader.ReadNext(out length);
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if (length != -1)
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{
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value = new string('0', length);
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fixed (char* buf = value)
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{
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int bufLen = length * sizeof(char);
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UnsafeUtility.MemCpy(buf, reader.ReadNext(bufLen), bufLen);
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}
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}
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else
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{
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value = null;
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}
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}
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}
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}
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