package edu.stanford.rt.datatype;

// Not yet implemented

/**
    IntegerType defines the integer type. The name for this type is "IntegerType".
    It has the following attributes: min, max, base, and step.
    
*/
public class DecimalType extends SimpleType
{
    private long min;
    private long max;
    private boolean minIncluded = true;
    private boolean maxIncluded = true;
    private long base;
    private long step;

    /**
          
    */
    public DecimalType (String n, long mi, boolean mii, 
                    long ma, boolean mai, long b, long s)
        throws IllegalArgumentException
    {
        super(n);
        
        // Check to make sure that at least one value is legal
        if (mi > ma) {
            throw new IllegalArgumentException("IntegerType: min > max");
        }
        if(b < mi || b > ma) {
            throw new IllegalArgumentException(
                "IntegerType: base in not within min and max");
        }
        if (s <= 0) {
            throw new IllegalArgumentException("IntegerType: step <= 0");
        }

        long x = (mi - rem) % s;
        if (x>0 && (mi + s-x)>ma) {
            throw new IllegalArgumentException(
                "IntegerType: First legal value is out of bound.");
        } 
        
        min = mi;
        max = ma;
        minIncluded = mii;
        maxIncluded = mai;
        base = b;
        step = s;
    }
    
    public long getMin()
    {
        return min;
    }
    public long getMax()
    {
        return max;
    }
    public boolean isMinIncluded()
    {
        return minIncluded;
    }
    public boolean isMaxIncluded()
    {
        return maxIncluded;
    }
    public long getBase()
    {
        return base;
    }
    public long getStep()
    {
        return step;
    }
    
    public boolean isValidValue(DataValue v)
    {
        if (!(v instanceof DecimalValue)) {
            return false;
        }
        
        double l = ((DecimalValue)v).getValue();
        if (l >= min && l<= max && ((l-remainder) % step == 0)) {
            return true;
        }
        return false;
    }
}