87b63b38a5
* Introduces `RawInterpolatedStringHandler` which is exactly the same as `DefaultInterpolatedStringHandler` except it _unsafely exposes_ it's `ReadOnlySpan<char>` buffer. This is useful for writing the string's data without actually building the string. * Uses this new string interpolation handler in `SpanWriter` to eliminate intermediate strings built. This is immensely useful in eliminating string allocations in writing Gump packets.
70 lines
2.4 KiB
C#
70 lines
2.4 KiB
C#
/*************************************************************************
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* ModernUO *
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* Copyright 2019-2022 - ModernUO Development Team *
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* Email: hi@modernuo.com *
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* File: PooledArraySpanFormattable.cs *
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* *
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* This program is free software: you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation, either version 3 of the License, or *
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* (at your option) any later version. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program. If not, see <http://www.gnu.org/licenses/>. *
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*************************************************************************/
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#nullable enable
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using System;
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namespace Server.Buffers;
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public struct PooledArraySpanFormattable : ISpanFormattable, IDisposable
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{
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private char[] _arrayToReturnToPool;
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private int _pos;
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public PooledArraySpanFormattable(char[] arrayToReturnToPool, int length)
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{
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_arrayToReturnToPool = arrayToReturnToPool;
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_pos = length;
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}
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public ReadOnlySpan<char> Chars => _arrayToReturnToPool.AsSpan(.._pos);
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public static implicit operator string(PooledArraySpanFormattable f) => f.ToString();
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public string ToString(string? format = null, IFormatProvider formatProvider = null)
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{
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var result = new string(_arrayToReturnToPool.AsSpan(0, _pos));
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Dispose();
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return result;
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}
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public bool TryFormat(
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Span<char> destination, out int charsWritten, ReadOnlySpan<char> format = default,
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IFormatProvider provider = null
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)
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{
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if (destination.Length < _pos)
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{
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charsWritten = 0;
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return false;
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}
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_arrayToReturnToPool.AsSpan(0, _pos).CopyTo(destination);
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Dispose();
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charsWritten = _pos;
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return true;
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}
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public void Dispose()
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{
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if (_arrayToReturnToPool != null)
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{
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STArrayPool<char>.Shared.Return(_arrayToReturnToPool);
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_arrayToReturnToPool = null;
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}
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}
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}
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