19 lines
705 B
C#
19 lines
705 B
C#
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using CanonSharp.Combinator.Abstractions;
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namespace CanonSharp.Combinator.Parsers.Primitives;
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/// <summary>
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/// 满足指定条件即成功的解析器
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/// </summary>
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/// <param name="predicate">满足的条件谓词</param>
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/// <typeparam name="TToken">输入流类型</typeparam>
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internal sealed class SatisfyParser<TToken>(Func<TToken, bool> predicate) : PrimitiveParser<TToken, TToken>
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{
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protected override ParseResult<TToken, TToken> Run<TState>(TState state)
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{
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return state.HasValue && predicate(state.Current)
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? ParseResultBuilder.Succeed<TToken, TState, TToken>(state.Current, state.Next)
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: ParseResultBuilder.Fail<TToken, TState, TToken>(state);
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}
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}
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