92 lines
2.8 KiB
C#
92 lines
2.8 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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// FileName : ParseSymbols.cs
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// Author : Sean Kessler
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namespace Axiom.Interpreter
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{
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public class ParseSymbols : List<ParseSymbol>
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{
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private Dictionary<Scanner.ScanSymbols, Scanner.ScanSymbols> uniqueSymbols = new Dictionary<Scanner.ScanSymbols, Scanner.ScanSymbols>();
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public ParseSymbols()
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{
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}
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public ParseSymbols(List<ParseSymbol> symbols)
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{
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foreach (ParseSymbol symbol in symbols) InsertSymbols(symbol);
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}
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public new void Add(ParseSymbol parseSymbol)
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{
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InsertSymbols(parseSymbol);
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}
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public void InsertSymbols(ParseSymbols symbols)
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{
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foreach (ParseSymbol parseSymbol in symbols)
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{
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base.Add(parseSymbol);
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if (!uniqueSymbols.ContainsKey(parseSymbol.Symbol)) uniqueSymbols.Add(parseSymbol.Symbol,parseSymbol.Symbol);
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}
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}
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public void InsertSymbols(ParseSymbol parseSymbol)
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{
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base.Add(parseSymbol);
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if (!uniqueSymbols.ContainsKey(parseSymbol.Symbol)) uniqueSymbols.Add(parseSymbol.Symbol,parseSymbol.Symbol);
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}
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public void RemoveSymbols(ParseSymbols symbols)
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{
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for (int index = symbols.Count - 1; index >= 0;index--)
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{
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ParseSymbol symbol = symbols[index];
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base.Remove(symbol);
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int count = (from ParseSymbol parseSymbol in this where parseSymbol.Symbol.Equals(symbol.Symbol) select parseSymbol).Count();
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if (0 == count && uniqueSymbols.ContainsKey(symbol.Symbol)) uniqueSymbols.Remove(symbol.Symbol);
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}
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}
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public void RemoveSymbols(ParseSymbol symbol)
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{
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base.Remove(symbol);
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int count = (from ParseSymbol parseSymbol in this where parseSymbol.Symbol.Equals(symbol.Symbol) select parseSymbol).Count();
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if(0==count&&uniqueSymbols.ContainsKey(symbol.Symbol))uniqueSymbols.Remove(symbol.Symbol);
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}
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public bool SymbolIn(Scanner.ScanSymbols symbol)
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{
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return uniqueSymbols.ContainsKey(symbol);
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}
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public bool SymbolIn(ParseSymbols parseSymbols)
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{
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foreach (ParseSymbol symbol in parseSymbols) if (uniqueSymbols.ContainsKey(symbol.Symbol)) return true;
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return false;
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}
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public bool SymbolIn(ParseSymbol parseSymbol)
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{
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return uniqueSymbols.ContainsKey(parseSymbol.Symbol);
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}
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}
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public class ParseSymbol : IEquatable<ParseSymbol>
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{
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private Scanner.ScanSymbols symbol;
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public ParseSymbol()
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{
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}
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public ParseSymbol(Scanner.ScanSymbols symbol)
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{
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this.symbol = symbol;
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}
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public Scanner.ScanSymbols Symbol
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{
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get
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{
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return symbol;
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}
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}
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public bool Equals(ParseSymbol parseSymbol)
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{
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if (parseSymbol == null) return false;
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return Symbol.Equals(parseSymbol.Symbol);
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}
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}
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}
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