59 lines
1.8 KiB
C#
59 lines
1.8 KiB
C#
using System;
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using System.Text;
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namespace TEngine
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{
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/// <summary>
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/// 字符串构建器缓存。
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/// <remarks>常用于临时构筑。</remarks>
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/// </summary>
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public static class StringBuilderCache
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{
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[ThreadStatic] private static StringBuilder _cacheStringBuilder;
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private const int MaxBuilderSize = 512;
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/// <summary>
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/// 获取缓存中的字符串构建器。
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/// </summary>
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/// <param name="capacity">字符串构建器容量。</param>
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/// <returns>字符串构建器。</returns>
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public static StringBuilder Acquire(int capacity = 256)
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{
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StringBuilder stringBuilder = _cacheStringBuilder;
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if (stringBuilder != null && stringBuilder.Capacity >= capacity)
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{
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_cacheStringBuilder = null;
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stringBuilder.Clear();
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return stringBuilder;
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}
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return new StringBuilder(capacity);
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}
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/// <summary>
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/// 获取文本并释放字符串构建器。
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/// </summary>
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/// <param name="stringBuilder">字符串构建器。</param>
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/// <returns>文本实例。</returns>
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public static string GetStringAndRelease(StringBuilder stringBuilder)
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{
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string result = stringBuilder.ToString();
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Release(stringBuilder);
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return result;
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}
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/// <summary>
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/// 释放字符串构建器。
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/// </summary>
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/// <param name="stringBuilder">字符串构建器。</param>
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public static void Release(StringBuilder stringBuilder)
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{
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if (stringBuilder.Capacity <= MaxBuilderSize)
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{
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_cacheStringBuilder = stringBuilder;
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}
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}
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}
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} |