jackfiled
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Reviewed-on: https://git.bupt-hpc.cn/jackfiled/CanonSharp/pulls/2 Co-authored-by: jackfiled <xcrenchangjun@outlook.com> Co-committed-by: jackfiled <xcrenchangjun@outlook.com>
22 lines
841 B
C#
22 lines
841 B
C#
using CanonSharp.Combinator.Abstractions;
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namespace CanonSharp.Combinator.Parsers.Bases;
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/// <summary>
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/// 映射解析器
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/// 提供一个函数修改上游解析器返回的结果
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/// </summary>
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/// <param name="parser">上游解析器</param>
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/// <param name="func">修改上游解析器返回结果的</param>
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/// <typeparam name="TToken"></typeparam>
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/// <typeparam name="TIntermediate"></typeparam>
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/// <typeparam name="T"></typeparam>
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internal sealed class MapParser<TToken, TIntermediate, T>(
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Parser<TToken, TIntermediate> parser,
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Func<TIntermediate, T> func) : Parser<TToken, T>
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{
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internal override ParseResult<TToken, TResult> Run<TState, TResult>(TState state,
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Func<ParseResult<TToken, T>, ParseResult<TToken, TResult>> continuation)
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=> parser.Run(state, result => continuation(result.Map(func)));
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}
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