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feat: Grammar Parser (#3)

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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>
This commit is contained in:
jackfiled
2024-08-18 12:01:27 +08:00
committed by 任昌骏
parent 3ed8bf5d36
commit cf19f8197e
85 changed files with 2340 additions and 413 deletions
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10
CanonSharp.Combinator/Results/FailedResultWithError.cs
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@@ -8,15 +8,17 @@ namespace CanonSharp.Combinator.Results;
/// <typeparam name="TToken">输入流的类型</typeparam>
/// <typeparam name="TState">输入流的读取类型</typeparam>
/// <typeparam name="T">实际的结果类型</typeparam>
internal sealed class FailedResultWithError<TToken, TState, T>(TState state) : FailedResult<TToken, T>
internal sealed class FailedResultWithError<TToken, TState, T>(TState state) : IFailedResult<TToken, T>
where TState : IReadState<TToken, TState>
{
public override IReadState<TToken> State => state;
public IReadState<TToken> State => state;
public override string Message => $"Unexpected state: {state}.";
public string Message => $"Unexpected state: {state}.";
public override FailedResult<TToken, TNext> Convert<TNext>()
public IFailedResult<TToken, TNext> Convert<TNext>()
{
return new FailedResultWithError<TToken, TState, TNext>(state);
}
public override string ToString() => $"Parse failed: {Message}.";
}

13
CanonSharp.Combinator/Results/FailedResultWithException.cs
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@@ -10,15 +10,18 @@ namespace CanonSharp.Combinator.Results;
/// <typeparam name="TToken">输入流类型</typeparam>
/// <typeparam name="TState">当前输入流状态的类型</typeparam>
/// <typeparam name="T">解析结果的类型</typeparam>
public class FailedResultWithException<TToken, TState, T>(Exception exception, TState state) : FailedResult<TToken, T>
internal sealed class FailedResultWithException<TToken, TState, T>(Exception exception, TState state)
: IFailedResult<TToken, T>
where TState : IReadState<TToken, TState>
{
public override IReadState<TToken> State => state;
public IReadState<TToken> State => state;
public override ParseException Exception => new(ToString(), exception);
public ParseException Exception => new(Message, exception);
public override string Message => $"Exception occured: {exception}.";
public string Message => $"Exception occured: {exception}.";
public override FailedResult<TToken, TNext> Convert<TNext>()
public IFailedResult<TToken, TNext> Convert<TNext>()
=> new FailedResultWithException<TToken, TState, TNext>(exception, state);
public override string ToString() => $"Parse failed: {Message}.";
}

11
CanonSharp.Combinator/Results/FailedResultWithMessage.cs
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@@ -10,15 +10,18 @@ namespace CanonSharp.Combinator.Results;
/// <typeparam name="TToken">输入流的类型</typeparam>
/// <typeparam name="TState">读取状态类型</typeparam>
/// <typeparam name="T">解析结果的类型</typeparam>
internal sealed class FailedResultWithMessage<TToken, TState, T>(string message, TState state) : FailedResult<TToken, T>
internal sealed class FailedResultWithMessage<TToken, TState, T>(string message, TState state)
: IFailedResult<TToken, T>
where TState : IReadState<TToken, TState>
{
public override IReadState<TToken> State => state;
public IReadState<TToken> State => state;
public override string Message => message;
public string Message => message;
public override FailedResult<TToken, TNext> Convert<TNext>()
public IFailedResult<TToken, TNext> Convert<TNext>()
{
return new FailedResultWithMessage<TToken, TState, TNext>(message, state);
}
public override string ToString() => $"Parse failed: {Message}.";
}

12
CanonSharp.Combinator/Results/InternalSuccessfulResult.cs
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@@ -11,13 +11,17 @@ namespace CanonSharp.Combinator.Results;
/// <typeparam name="TState">输入流的状态类型</typeparam>
/// <typeparam name="T">解析结果的类型</typeparam>
internal sealed class InternalSuccessfulResult<TToken, TState, T>(T result, TState state)
: SuccessfulResult<TToken, T>(result)
: ISuccessfulResult<TToken, T>
where TState : IReadState<TToken, TState>
{
protected override ParseResult<TToken, TResult> RunNext<TNext, TResult>(Parser<TToken, TNext> parser,
Func<ParseResult<TToken, TNext>, ParseResult<TToken, TResult>> continuation)
public T Value => result;
public IParseResult<TToken, TResult> RunNext<TNext, TResult>(IParser<TToken, TNext> parser,
Func<IParseResult<TToken, TNext>, IParseResult<TToken, TResult>> continuation)
=> parser.Run(state, continuation);
public override ParseResult<TToken, TResult> Map<TResult>(Func<T, TResult> map)
public IParseResult<TToken, TResult> Map<TResult>(Func<T, TResult> map)
=> new InternalSuccessfulResult<TToken, TState, TResult>(map(Value), state);
public override string ToString() => Value?.ToString() ?? string.Empty;
}