31 lines
1.0 KiB
C#
31 lines
1.0 KiB
C#
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using CanonSharp.Combinator.Abstractions;
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namespace CanonSharp.Combinator.Parsers.Modifiers;
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/// <summary>
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/// 对结果运行指定操作，但是不做修改操作的解析器
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/// </summary>
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/// <param name="parser">上游解析器</param>
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/// <param name="succeed">对成功结果的操作</param>
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/// <param name="fail">对失败结果的操作</param>
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/// <typeparam name="TToken">输入流类型</typeparam>
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/// <typeparam name="T">解析结果类型</typeparam>
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internal sealed class DoParser<TToken, T>(
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Parser<TToken, T> parser,
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Action<T> succeed,
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Action<FailedResult<TToken, T>> fail) : ModifiedParser<TToken, T, T>(parser)
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{
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protected override ParseResult<TToken, T> Succeed<TState>(TState state,
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SuccessfulResult<TToken, T> successfulResult)
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{
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succeed(successfulResult.Value);
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return successfulResult;
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}
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protected override ParseResult<TToken, T> Fail<TState>(TState state, FailedResult<TToken, T> failedResult)
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{
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fail(failedResult);
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return failedResult;
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}
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}
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