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>
23 lines
885 B
C#
23 lines
885 B
C#
using CanonSharp.Combinator.Abstractions;
|
|
|
|
namespace CanonSharp.Combinator.Parsers.Bases;
|
|
|
|
/// <summary>
|
|
/// 映射解析器
|
|
/// 提供一个函数修改上游解析器返回的结果
|
|
/// </summary>
|
|
/// <param name="parser">上游解析器</param>
|
|
/// <param name="func">修改上游解析器返回结果的</param>
|
|
/// <typeparam name="TToken"></typeparam>
|
|
/// <typeparam name="TIntermediate"></typeparam>
|
|
/// <typeparam name="T"></typeparam>
|
|
internal sealed class MapParser<TToken, TIntermediate, T>(
|
|
IParser<TToken, TIntermediate> parser,
|
|
Func<TIntermediate, T> func) : IParser<TToken, T>
|
|
{
|
|
public IParseResult<TToken, TResult> Run<TState, TResult>(TState state,
|
|
Func<IParseResult<TToken, T>, IParseResult<TToken, TResult>> continuation)
|
|
where TState : IReadState<TToken, TState>
|
|
=> parser.Run(state, result => continuation(result.Map(func)));
|
|
}
|