jackfiled
cf19f8197e
Reviewed-on: https://git.bupt-hpc.cn/jackfiled/CanonSharp/pulls/3 Co-authored-by: jackfiled <xcrenchangjun@outlook.com> Co-committed-by: jackfiled <xcrenchangjun@outlook.com>
28 lines
1.1 KiB
C#
28 lines
1.1 KiB
C#
using CanonSharp.Combinator.Abstractions;
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namespace CanonSharp.Combinator.Parsers.Primitives;
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/// <summary>
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/// 直接成功的解析器
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/// </summary>
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/// <param name="value">解析成功返回的值</param>
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/// <typeparam name="TToken">输入流类型</typeparam>
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/// <typeparam name="T">解析成功返回值的类型</typeparam>
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internal sealed class PureParser<TToken, T>(T value) : PrimitiveParser<TToken, T>
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{
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protected override IParseResult<TToken, T> Run<TState>(TState state)
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=> ParseResultBuilder.Succeed<TToken, TState, T>(value, state);
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}
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/// <summary>
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/// 按照输入状态返回结果的始终成功解析器
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/// </summary>
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/// <param name="valueFunc">按照输入状态返回解析结果的函数</param>
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/// <typeparam name="TToken">输入流类型</typeparam>
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/// <typeparam name="T">解析成功返回值的类型</typeparam>
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internal sealed class DelayedPureParser<TToken, T>(Func<IReadState<TToken>, T> valueFunc) : PrimitiveParser<TToken, T>
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{
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protected override IParseResult<TToken, T> Run<TState>(TState state)
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=> ParseResultBuilder.Succeed<TToken, TState, T>(valueFunc(state), state);
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}
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