48 lines
1013 B
C#
48 lines
1013 B
C#
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using System.Diagnostics.CodeAnalysis;
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using Canon.Core.Abstractions;
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namespace Canon.Tests.Utils;
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/// <summary>
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/// 从字符串中读取源代码
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/// </summary>
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public sealed class StringSourceReader(string source) : ISourceReader, IDisposable
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{
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private readonly IEnumerator<char> _enumerator =
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source.GetEnumerator();
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public uint Line { get; private set; } = 1;
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public uint Pos { get; private set; }
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public string FileName => "string";
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public bool TryReadChar([NotNullWhen(true)] out char? c)
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{
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if (Pos != 0 || Line != 1)
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{
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// 不是第一次读取
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if (_enumerator.Current == '\n')
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{
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Pos = 0;
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Line += 1;
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}
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}
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if (!_enumerator.MoveNext())
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{
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c = null;
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return false;
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}
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Pos += 1;
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c = _enumerator.Current;
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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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_enumerator.Dispose();
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}
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}
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