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67 lines
2.6 KiB
67 lines
2.6 KiB
using System;
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using System.Collections.Generic;
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using System.Collections.Immutable;
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using System.Diagnostics;
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using System.Linq;
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namespace Discord.Commands
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{
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[DebuggerDisplay(@"{DebuggerDisplay,nq}")]
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public struct TypeReaderValue
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{
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public object Value { get; }
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public float Score { get; }
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public TypeReaderValue(object value, float score)
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{
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Value = value;
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Score = score;
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}
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public override string ToString() => Value?.ToString();
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private string DebuggerDisplay => $"[{Value}, {Math.Round(Score, 2)}]";
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}
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[DebuggerDisplay(@"{DebuggerDisplay,nq}")]
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public struct TypeReaderResult : IResult
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{
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public IReadOnlyCollection<TypeReaderValue> Values { get; }
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/// <inheritdoc/>
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public CommandError? Error { get; }
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/// <inheritdoc/>
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public string ErrorReason { get; }
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/// <inheritdoc/>
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public bool IsSuccess => !Error.HasValue;
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/// <exception cref="InvalidOperationException">TypeReaderResult was not successful.</exception>
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public object BestMatch => IsSuccess
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? (Values.Count == 1 ? Values.Single().Value : Values.OrderByDescending(v => v.Score).First().Value)
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: throw new InvalidOperationException("TypeReaderResult was not successful.");
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private TypeReaderResult(IReadOnlyCollection<TypeReaderValue> values, CommandError? error, string errorReason)
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{
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Values = values;
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Error = error;
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ErrorReason = errorReason;
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}
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public static TypeReaderResult FromSuccess(object value)
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=> new TypeReaderResult(ImmutableArray.Create(new TypeReaderValue(value, 1.0f)), null, null);
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public static TypeReaderResult FromSuccess(TypeReaderValue value)
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=> new TypeReaderResult(ImmutableArray.Create(value), null, null);
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public static TypeReaderResult FromSuccess(IReadOnlyCollection<TypeReaderValue> values)
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=> new TypeReaderResult(values, null, null);
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public static TypeReaderResult FromError(CommandError error, string reason)
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=> new TypeReaderResult(null, error, reason);
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public static TypeReaderResult FromError(Exception ex)
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=> FromError(CommandError.Exception, ex.Message);
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public static TypeReaderResult FromError(IResult result)
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=> new TypeReaderResult(null, result.Error, result.ErrorReason);
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public override string ToString() => IsSuccess ? "Success" : $"{Error}: {ErrorReason}";
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private string DebuggerDisplay => IsSuccess ? $"Success ({string.Join(", ", Values)})" : $"{Error}: {ErrorReason}";
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}
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}
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