public static void RegisterPunctuation(params string[] symbols)
{
foreach (string symbol in symbols)
{
SymbolTerminal term = SymbolTerminal.GetSymbol(symbol);
term.SetOption(TermOptions.IsPunctuation);
}
}
public static void RegisterOperators(int precedence, Associativity associativity, params string[] opSymbols)
{
foreach (string op in opSymbols)
{
SymbolTerminal opSymbol = SymbolTerminal.GetSymbol(op);
opSymbol.SetOption(TermOptions.IsOperator, true);
opSymbol.Precedence = precedence;
opSymbol.Associativity = associativity;
}
}
public static SymbolTerminal GetSymbol(string symbol)
{
SymbolTerminal term;
if (_symbols.TryGetValue(symbol, out term))
{
return term;
}
term = new SymbolTerminal(symbol);
term.SetOption(TermOptions.IsGrammarSymbol, true);
_symbols[symbol] = term;
return term;
}
public static SymbolTerminal GetSymbol(string symbol)
{
SymbolTerminal term;
if (_symbols.TryGetValue(symbol, out term))
{
return(term);
}
term = new SymbolTerminal(symbol);
term.SetOption(TermOptions.IsGrammarSymbol, true);
_symbols[symbol] = term;
return(term);
}