public override BoolType Smaller(TypeBase right)
{
if (right == null)
return null;
var rightType = right.GetTypeStr();
if (rightType != "string")
return new BoolType(false);
return new BoolType(this.strval.CompareTo(right.strval) < 0);
}
public override TypeBase Add(TypeBase right)
{
if (right == null)
return null;
var rightType = right.GetTypeStr();
if (rightType == "char")
return new StringType(this.strval + right.cval.ToString());
else if (rightType == "string")
return new StringType(this.strval + right.strval);
else
return null;
}
public override BoolType Equal(TypeBase right)
{
if (right == null)
return null;
var rightType = right.GetTypeStr();
if (rightType != "string")
return new BoolType(false);
return new BoolType(this.strval == right.strval);
}
public override TypeBase Power(TypeBase right)
{
if (right == null)
return null;
var rightType = right.GetTypeStr();
if (rightType == "int")
return new IntType((int)Math.Pow((double)this.ival, (double)right.ival));
else if (rightType == "double")
return new DoubleType(Math.Pow((double)this.dval, (double)right.dval));
else
return null;
}
public override BoolType Smaller(TypeBase right)
{
if (right == null)
return null;
var rightType = right.GetTypeStr();
if (rightType != "int")
return new BoolType(false);
return new BoolType(this.ival < right.ival);
}
public override TypeBase Percent(TypeBase right)
{
if (right == null)
return null;
var rightType = right.GetTypeStr();
if (rightType == "int")
return new IntType(this.ival % right.ival);
else
return null;
}
public override TypeBase Multi(TypeBase right)
{
if (right == null)
return null;
var rightType = right.GetTypeStr();
if (rightType == "int")
return new IntType(this.ival * right.ival);
else if (rightType == "double")
return new DoubleType((double)this.ival * right.dval);
else
return null;
}
public override TypeBase Minus(TypeBase right)
{
if (right == null)
return null;
var rightType = right.GetTypeStr();
if (rightType == "int")
return new DoubleType(this.dval - (double)right.ival);
else if (rightType == "double")
return new DoubleType(this.dval - right.dval);
else
return null;
}
public override BoolType Larger(TypeBase right)
{
if (right == null)
return null;
var rightType = right.GetTypeStr();
if (rightType != "double")
return new BoolType(false);
return new BoolType(this.dval > right.dval);
}
public override BoolType Or(TypeBase right)
{
if (right.GetTypeStr() != "bool")
return new BoolType(false);
return new BoolType( val || (right as BoolType).val);
}