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Optimize performance and GC for string parsing in PDT.

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PopSlime
2023-11-29 14:51:49 +08:00
parent 5ef6e2b4a3
commit ed6ae7ad8a
1 changed files with 11 additions and 7 deletions
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14
Assets/Cryville/Common/Pdt/PdtInterpreter.cs
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@@ -4,7 +4,7 @@ using System;
using System.Collections.Generic; using System.Collections.Generic;
using System.Linq; using System.Linq;
using System.Reflection; using System.Reflection;
using System.Text.RegularExpressions; using System.Text;
using CMath = System.Math; using CMath = System.Math;
namespace Cryville.Common.Pdt { namespace Cryville.Common.Pdt {
@@ -64,6 +64,8 @@ namespace Cryville.Common.Pdt {
/// The current position in the string being parsed by the interpreter. /// The current position in the string being parsed by the interpreter.
/// </summary> /// </summary>
public int Position { get; protected set; } public int Position { get; protected set; }
readonly StringBuilder _sb = new StringBuilder();
#pragma warning disable IDE1006 #pragma warning disable IDE1006
/// <summary> /// <summary>
/// The character at the current position. /// The character at the current position.
@@ -139,13 +141,15 @@ namespace Cryville.Common.Pdt {
/// <returns>A string.</returns> /// <returns>A string.</returns>
/// <exception cref="IndexOutOfRangeException">The end of the source string is reached.</exception> /// <exception cref="IndexOutOfRangeException">The end of the source string is reached.</exception>
protected string GetString() { protected string GetString() {
int sp = Position; _sb.Clear();
do { Position++;
while (ct != CharCategory.StringDelimiter) {
if (cc == '\\') Position++; if (cc == '\\') Position++;
_sb.Append(cc);
Position++; Position++;
} while (ct != 0x0100); }
Position++; Position++;
return Regex.Replace(Source.Substring(sp + 1, Position - sp - 2), @"\\(.)", "$1"); return _sb.ToString();
} }
/// <summary> /// <summary>
/// Reads an expression. /// Reads an expression.