CharMap.cs
42 lines
| 1.3 KiB
| text/x-csharp
|
CSharpLexer
cin
|
r228 | using Implab.Automaton; | ||
| using System; | ||||
| using System.Collections.Generic; | ||||
| using System.Linq; | ||||
| using System.Runtime.CompilerServices; | ||||
| using System.Text; | ||||
| using System.Threading.Tasks; | ||||
| namespace Implab.Formats { | ||||
| public class CharMap : IAlphabet<char> { | ||||
| readonly char m_min; | ||||
| readonly char m_max; | ||||
| readonly int[] m_map; | ||||
| public CharMap(char min, int[] map) { | ||||
| Safe.ArgumentNotNull(map, nameof(map)); | ||||
| Count = map.Max()+1; | ||||
| m_min = min; | ||||
| m_map = map; | ||||
| m_max = (char)(min + map.Length); | ||||
| } | ||||
| public int Count { | ||||
| get; private set; | ||||
| } | ||||
| public bool Contains(char symbol) { | ||||
| return symbol >= m_min && symbol <= m_max && m_map[symbol-m_min] != AutomatonConst.UNCLASSIFIED_INPUT; | ||||
| } | ||||
| public IEnumerable<char> GetSymbols(int cls) { | ||||
| for (var i = 0; i < m_map.Length; i++) | ||||
| if (m_map[i] == cls) | ||||
| yield return (char)(i + m_min); | ||||
| } | ||||
| [MethodImpl(MethodImplOptions.AggressiveInlining)] | ||||
| public int Translate(char symbol) { | ||||
| return symbol >= m_min && symbol <= m_max ? m_map[symbol-m_min] : AutomatonConst.UNCLASSIFIED_INPUT; | ||||
| } | ||||
| } | ||||
| } | ||||