implab/ImplabNet Files · Implab/Parsing/EnumAlphabet.cs

Added Signal class a lightweight alternative to ManualResetEvent

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             EnumAlphabet.cs
        
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                CSharpLexer
            
             / Implab / Parsing / EnumAlphabet.cs
          
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        cin
    
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      using Implab;

      using System;

      using System.Collections.Generic;

        cin
    
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      using System.Diagnostics;

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      using System.Globalization;

      using System.Linq;

      using System.Text;

      using System.Threading.Tasks;

      namespace Implab.Parsing {

          /// <summary>

          /// Алфавит символами которого являются элементы перечислений.

          /// </summary>

          /// <typeparam name="T">Тип перечислений</typeparam>

          public class EnumAlphabet<T> : AlphabetBase<T> where T : struct, IConvertible {

              static readonly T[] _symbols;

              static readonly EnumAlphabet<T> _fullAlphabet;

        cin
    
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              [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1065:DoNotRaiseExceptionsInUnexpectedLocations")]

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              static EnumAlphabet() {

                  if (!typeof(T).IsEnum)

                      throw new InvalidOperationException("Invalid generic parameter, enumeration is required");

                  if (Enum.GetUnderlyingType(typeof(T)) != typeof(Int32))

                      throw new InvalidOperationException("Only enums based on Int32 are supported");

                  _symbols = ((T[])Enum.GetValues(typeof(T)))

                      .OrderBy(x => x.ToInt32(CultureInfo.InvariantCulture))

                      .ToArray();

                  if (

                      _symbols[_symbols.Length - 1].ToInt32(CultureInfo.InvariantCulture) >= _symbols.Length

                      || _symbols[0].ToInt32(CultureInfo.InvariantCulture) != 0

                  )

                      throw new InvalidOperationException("The specified enumeration must be zero-based and continuously numbered");

                  _fullAlphabet = new EnumAlphabet<T>(_symbols.Select(x => x.ToInt32(CultureInfo.InvariantCulture)).ToArray());

              }

              public static EnumAlphabet<T> FullAlphabet {

                  get {

                      return _fullAlphabet;

                  }

              }

              public EnumAlphabet()

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                  : base(_symbols.Length) {

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              }

              public EnumAlphabet(int[] map)

                  : base(map) {

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                  Debug.Assert(map.Length == _symbols.Length);

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              }

              public override int GetSymbolIndex(T symbol) {

                  return symbol.ToInt32(CultureInfo.InvariantCulture);

              }

              public override IEnumerable<T> InputSymbols {

                  get { return _symbols; }

              }

          }

      }

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cin Added initial JSON support...	r55	using Implab;
		using System;
		using System.Collections.Generic;
cin code cleanup	r59	using System.Diagnostics;
cin Added initial JSON support...	r55	using System.Globalization;
		using System.Linq;
		using System.Text;
		using System.Threading.Tasks;

		namespace Implab.Parsing {
		/// <summary>
		/// Алфавит символами которого являются элементы перечислений.
		/// </summary>
		/// <typeparam name="T">Тип перечислений</typeparam>
		public class EnumAlphabet<T> : AlphabetBase<T> where T : struct, IConvertible {
		static readonly T[] _symbols;
		static readonly EnumAlphabet<T> _fullAlphabet;

cin minor changes	r65	[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1065:DoNotRaiseExceptionsInUnexpectedLocations")]
cin Added initial JSON support...	r55	static EnumAlphabet() {
		if (!typeof(T).IsEnum)
		throw new InvalidOperationException("Invalid generic parameter, enumeration is required");

		if (Enum.GetUnderlyingType(typeof(T)) != typeof(Int32))
		throw new InvalidOperationException("Only enums based on Int32 are supported");

		_symbols = ((T[])Enum.GetValues(typeof(T)))
		.OrderBy(x => x.ToInt32(CultureInfo.InvariantCulture))
		.ToArray();

		if (
		_symbols[_symbols.Length - 1].ToInt32(CultureInfo.InvariantCulture) >= _symbols.Length
		\|\| _symbols[0].ToInt32(CultureInfo.InvariantCulture) != 0
		)
		throw new InvalidOperationException("The specified enumeration must be zero-based and continuously numbered");

		_fullAlphabet = new EnumAlphabet<T>(_symbols.Select(x => x.ToInt32(CultureInfo.InvariantCulture)).ToArray());
		}



		public static EnumAlphabet<T> FullAlphabet {
		get {
		return _fullAlphabet;
		}
		}


		public EnumAlphabet()
cin code cleanup	r59	: base(_symbols.Length) {
cin Added initial JSON support...	r55	}

		public EnumAlphabet(int[] map)
		: base(map) {
cin code cleanup	r59	Debug.Assert(map.Length == _symbols.Length);
cin Added initial JSON support...	r55	}


		public override int GetSymbolIndex(T symbol) {
		return symbol.ToInt32(CultureInfo.InvariantCulture);
		}

		public override IEnumerable<T> InputSymbols {
		get { return _symbols; }
		}

		}
		}