private static IntValue EvaluateBinaryOperation(BinaryOperator oper, IntValue left, IntValue right)
{
switch (oper)
{
case BinaryOperator.Mult:
return(new IntValue(checked (left.Value * right.Value)));
case BinaryOperator.Div:
return(new IntValue(left.Value / right.Value));
case BinaryOperator.Modulo:
return(new IntValue(left.Value % right.Value));
case BinaryOperator.Add:
return(new IntValue(checked (left.Value + right.Value)));
case BinaryOperator.Sub:
return(new IntValue(checked (left.Value - right.Value)));
case BinaryOperator.ShiftLeft:
return(new IntValue(checked ((int)left.Value << (int)right.Value)));
case BinaryOperator.ShiftRight:
return(new IntValue(checked ((int)left.Value >> (int)right.Value)));
case BinaryOperator.Less:
return(new IntValue(left.Value < right.Value ? 1 : 0));
case BinaryOperator.Greater:
return(new IntValue(left.Value > right.Value ? 1 : 0));
case BinaryOperator.LessOrEqual:
return(new IntValue(left.Value <= right.Value ? 1 : 0));
case BinaryOperator.GreaterOrEqual:
return(new IntValue(left.Value >= right.Value ? 1 : 0));
case BinaryOperator.Equal:
return(new IntValue(left.Value == right.Value ? 1 : 0));
case BinaryOperator.NotEqual:
return(new IntValue(left.Value != right.Value ? 1 : 0));
case BinaryOperator.BinAnd:
return(new IntValue(left.Value & right.Value));
case BinaryOperator.BinOr:
return(new IntValue(left.Value | right.Value));
case BinaryOperator.LogAnd:
return(new IntValue(left.Value != 0 && right.Value != 0 ? 1 : 0));
case BinaryOperator.LogOr:
return(new IntValue(left.Value != 0 || right.Value != 0 ? 1 : 0));
default:
throw new Exception();
}
}
private static NodeValue EvaluateBinaryOperation(BinaryOperator oper, StringValue left, IntValue right)
{
switch (oper)
{
case BinaryOperator.Mult:
return(new StringValue(string.Concat(Enumerable.Repeat(left.Value, (int)right.Value))));
default:
throw new InvalidBinaryOperationException();
}
}
