public IParseTreeValue Evaluate(IParseTreeValue LHS, IParseTreeValue RHS, string opSymbol)
{
if (!(IsSupportedSymbol(opSymbol)))
{
throw new ArgumentException($"Unsupported operation ({opSymbol}) passed to Evaluate function");
}
if (opSymbol.Equals(LogicalOperators.NOT))
{
throw new ArgumentException($"Unary operator ({opSymbol}) passed to binary Evaluate function");
}
var opProvider = new OperatorTypesProvider((LHS.ValueType, RHS.ValueType), opSymbol);
if (opProvider.IsMismatch)
{
return(_valueFactory.CreateMismatchExpression($"{LHS.Token} {opSymbol} {RHS.Token}", Tokens.Variant));
}
if (ArithmeticOperators.Includes(opSymbol))
{
return(EvaluateArithmeticOp(opSymbol, LHS, RHS));
}
if (RelationalOperators.Includes(opSymbol))
{
return(EvaluateRelationalOp(opSymbol, LHS, RHS));
}
return(EvaluateLogicalOperator(opSymbol, LHS, RHS));
}
private bool IsSupportedSymbol(string opSymbol)
{
return(ArithmeticOperators.Includes(opSymbol) ||
RelationalOperators.Includes(opSymbol) ||
LogicalOperators.Incudes(opSymbol));
}