/* Copyright (C) 2003 Vladimir Roubtsov. All rights reserved.
*
* This program and the accompanying materials are made available under
* the terms of the Common Public License v1.0 which accompanies this distribution,
* and is available at http://www.eclipse.org/legal/cpl-v10.html
*
* $Id: IItemAttribute.java,v 1.1.1.1.2.1 2004/07/10 19:08:50 vlad_r Exp $
*/
package com.vladium.emma.report;
import java.text.DecimalFormat;
import java.text.FieldPosition;
import java.text.NumberFormat;
import java.util.Comparator;
import com.vladium.util.asserts.$assert;
// ----------------------------------------------------------------------------
/**
* @author Vlad Roubtsov, (C) 2003
*/
public
interface IItemAttribute
{
// public: ................................................................
// TODO: this modeling (units is an independent axis) is not ideal, because
// not all of the attributes have meaningful separation by unit type
// note: the ordering is consistent with code in Factory:
int ATTRIBUTE_NAME_ID = 0;
int ATTRIBUTE_CLASS_COVERAGE_ID = 1;
int ATTRIBUTE_METHOD_COVERAGE_ID = 2;
int ATTRIBUTE_BLOCK_COVERAGE_ID = 3;
int ATTRIBUTE_LINE_COVERAGE_ID = 4;
// note: the ordering is consistent with code in Factory and SrcFileItem:
int UNITS_COUNT = 0;
int UNITS_INSTR = 1;
Comparator /* IItem */ comparator ();
String getName ();
void format (IItem item, StringBuffer appendTo);
boolean passes (IItem item, int criterion); // ideally, criteria should come from a double-dispatched API
abstract class Factory
{
public static IItemAttribute getAttribute (final int attributeID, final int unitsID)
{
if ($assert.ENABLED) $assert.ASSERT (attributeID >= ATTRIBUTE_NAME_ID && attributeID <= ATTRIBUTE_LINE_COVERAGE_ID, "invalid attribute ID: " + attributeID);
if ($assert.ENABLED) $assert.ASSERT (unitsID >= UNITS_COUNT && unitsID <= UNITS_INSTR, "invalid units ID: " + unitsID);
return ATTRIBUTES [unitsID][attributeID];
}
public static IItemAttribute [] getAttributes (final int unitsID)
{
if ($assert.ENABLED) $assert.ASSERT (unitsID >= UNITS_COUNT && unitsID <= UNITS_INSTR, "invalid units ID: " + unitsID);
return (IItemAttribute []) ATTRIBUTES [unitsID].clone ();
}
private static abstract class Attribute implements IItemAttribute
{
public String getName ()
{
return m_name;
}
protected Attribute (final String name)
{
if (name == null) throw new IllegalArgumentException ("null input: name");
m_name = name;
}
private final String m_name;
} // end of nested class
private static final class NameAttribute extends Attribute
implements IItemAttribute
{
public Comparator comparator ()
{
return m_comparator;
}
public void format (final IItem item, final StringBuffer appendTo)
{
appendTo.append (item.getName ());
}
public boolean passes (final IItem item, final int criterion)
{
return true; // names always pass [for now]
}
private static final class NameComparator implements Comparator
{
public int compare (final Object l, final Object g)
{
final IItem il = (IItem) l;
final IItem ig = (IItem) g;
return il.getName ().compareTo (ig.getName ());
}
} // end of nested class
NameAttribute (final String name)
{
super (name);
m_comparator = new NameComparator ();
}
private final Comparator m_comparator;
} // end of nested class
private static final class FractionAttribute extends Attribute
implements IItemAttribute
{
public Comparator comparator ()
{
return m_comparator;
}
public void format (final IItem item, final StringBuffer appendTo)
{
final int n = item.getAggregate (m_numeratorAggregateID);
final double n_scaled = (double) n / m_scale;
final int d = item.getAggregate (m_denominatorAggregateID);
// d can be 0 legally: the compiler can generate classes with no methods in them [happens with synthetic classes, for example]
//if ($assert.ENABLED) $assert.ASSERT (d > 0, "[attr ID = " + m_denominatorAggregateID + "] invalid denominator: " + d);
final int appendToStart = appendTo.length ();
if (d == 0)
m_format.format (1.0F, appendTo, m_fieldPosition);
else
m_format.format (n_scaled / d, appendTo, m_fieldPosition);
final int iLimit = Math.max (1, 5 - appendTo.length () + appendToStart);
for (int i = 0; i < iLimit; ++ i) appendTo.append (' ');
appendTo.append ('(');
m_nFormat.format (n_scaled, appendTo, m_fieldPosition);
appendTo.append ('/');
appendTo.append (d);
appendTo.append (')');
}
public boolean passes (final IItem item, final int criterion)
{
final int n = item.getAggregate (m_numeratorAggregateID);
final int d = item.getAggregate (m_denominatorAggregateID);
return ((double) n) * IItem.PRECISION >= ((double) d) * m_scale * criterion;
}
private final class FractionComparator implements Comparator
{
public int compare (final Object l, final Object g)
{
final IItem il = (IItem) l;
final IItem ig = (IItem) g;
final double nil = il.getAggregate (m_numeratorAggregateID);
final double dil = il.getAggregate (m_denominatorAggregateID);
final double nig = ig.getAggregate (m_numeratorAggregateID);
final double dig = ig.getAggregate (m_denominatorAggregateID);
final double diff = nil * dig - nig * dil;
return diff > 0.0 ? +1 : (diff < 0.0 ? -1 : 0);
}
} // end of inner class
FractionAttribute (final String name, final int numeratorAggregateID, final int denominatorAggregateID, final int scale, final int nFractionDigits)
{
super (name);
if ($assert.ENABLED) $assert.ASSERT (scale != 0, "scale: " + scale);
m_numeratorAggregateID = numeratorAggregateID;
m_denominatorAggregateID = denominatorAggregateID; // ok to be zero
m_scale = scale;
m_format = (DecimalFormat) NumberFormat.getPercentInstance (); // TODO: locale
m_fieldPosition = new FieldPosition (DecimalFormat.INTEGER_FIELD);
// TODO: set this from a pattern property
//m_format.setMinimumFractionDigits (1);
m_format.setMaximumFractionDigits (0);
//m_format.setDecimalSeparatorAlwaysShown (false);
m_nFormat = (DecimalFormat) NumberFormat.getInstance (); // TODO: locale
m_nFormat.setGroupingUsed (false);
m_nFormat.setMaximumFractionDigits (nFractionDigits);
m_comparator = new FractionComparator ();
}
final int m_numeratorAggregateID, m_denominatorAggregateID;
private final int m_scale;
private final DecimalFormat m_format, m_nFormat;
private final FieldPosition m_fieldPosition;
private final Comparator m_comparator;
} // end of nested class
private Factory () {}
private static final IItemAttribute [/* unit */][/* attributes */] ATTRIBUTES; // set in <clinit>
static
{
final IItemAttribute nameAttribute = new NameAttribute ("name");
final IItemAttribute classCoverageAttribute = new FractionAttribute ("class, %", IItem.COVERAGE_CLASS_COUNT, IItem.TOTAL_CLASS_COUNT, 1, 0);
final IItemAttribute methodCoverageAttribute = new FractionAttribute ("method, %", IItem.COVERAGE_METHOD_COUNT, IItem.TOTAL_METHOD_COUNT, 1, 0);
ATTRIBUTES = new IItemAttribute [][]
{
/* count: */
{
nameAttribute,
classCoverageAttribute,
methodCoverageAttribute,
new FractionAttribute ("block, %", IItem.COVERAGE_BLOCK_COUNT, IItem.TOTAL_BLOCK_COUNT, 1, 0),
new FractionAttribute ("line, %", IItem.COVERAGE_LINE_COUNT, IItem.TOTAL_LINE_COUNT, IItem.PRECISION, 1),
},
/* instr: */
{
nameAttribute,
classCoverageAttribute,
methodCoverageAttribute,
new FractionAttribute ("block, %", IItem.COVERAGE_BLOCK_INSTR, IItem.TOTAL_BLOCK_INSTR, 1, 0),
new FractionAttribute ("line, %", IItem.COVERAGE_LINE_INSTR, IItem.TOTAL_LINE_COUNT, IItem.PRECISION, 1),
},
};
}
} // end of nested class
} // end of interface
// ---------------------------------------------------------------------------- |
