/**
* Create a new Transformer that uses the input object as a key to find the
* transformer to call.
* <p>
* The Map consists of object keys and Transformer values. A transformer
* is called if the input object equals the key. If there is no match, the
* default transformer is called. The default transformer is set in the map
* using a null key. If no default is set, null will be returned in a default case.
*
* @see org.apache.commons.collections.functors.SwitchTransformer
*
* @param objectsAndTransformers a map of objects to transformers
* @return the transformer
* @throws IllegalArgumentException if the map is null
* @throws IllegalArgumentException if the map is empty
* @throws IllegalArgumentException if any transformer in the map is null
*/
public static Transformer switchMapTransformer(java.util.Map<Object, Object> objectsAndTransformers)
{
Transformer[] trs = null;
Predicate[] preds = null;
if (objectsAndTransformers == null)
{
throw new java.lang.IllegalArgumentException("The object and transformer map must not be null");
}
Transformer def = (Transformer)objectsAndTransformers.remove(null);
int size = objectsAndTransformers.size();
trs = new Transformer[size];
preds = new Predicate[size];
int i = 0;
for (java.util.Iterator<java.util.MapNS.Entry<Object, Object>> it = objectsAndTransformers.entrySet().iterator(); it.hasNext(); )
{
java.util.MapNS.Entry<Object, Object> entry = (java.util.MapNS.Entry<Object, Object>)it.next();
preds[i] = EqualPredicate.getInstance(entry.getKey());
trs[i] = (Transformer)entry.getValue();
i++;
}
return switchTransformer(preds, trs, def);
}
private static string[] finishSplit(java.util.List<string> list, string input, int
begin, int maxSize, int limit)
{
// Add trailing text.
if (begin < input.Length)
{
list.add(Sharpen.StringHelper.Substring(input, begin));
}
else
{
if (limit != 0)
{
// No point adding the empty string if limit == 0, just to remove it below.
list.add(string.Empty);
}
}
// Remove all trailing empty matches in the limit == 0 case.
if (limit == 0)
{
int i = list.size() - 1;
while (i >= 0 && string.IsNullOrEmpty(list.get(i)))
{
list.remove(i);
i--;
}
}
// Convert to an array.
return list.toArray(new string[list.size()]);
}
/**
* Create a new Transformer that calls one of the transformers depending
* on the predicates.
* <p>
* The Map consists of Predicate keys and Transformer values. A transformer
* is called if its matching predicate returns true. Each predicate is evaluated
* until one returns true. If no predicates evaluate to true, the default
* transformer is called. The default transformer is set in the map with a
* null key. The ordering is that of the iterator() method on the entryset
* collection of the map.
*
* @param predicatesAndTransformers a map of predicates to transformers
* @return the <code>switch</code> transformer
* @throws IllegalArgumentException if the map is null
* @throws IllegalArgumentException if any transformer in the map is null
* @throws ClassCastException if the map elements are of the wrong type
*/
public static Transformer getInstance(java.util.Map<Object, Object> predicatesAndTransformers)
{
Transformer[] transformers = null;
Predicate[] preds = null;
if (predicatesAndTransformers == null)
{
throw new java.lang.IllegalArgumentException("The predicate and transformer map must not be null");
}
if (predicatesAndTransformers.size() == 0)
{
return ConstantTransformer.NULL_INSTANCE;
}
// convert to array like this to guarantee iterator() ordering
Transformer defaultTransformer = (Transformer)predicatesAndTransformers.remove(null);
int size = predicatesAndTransformers.size();
if (size == 0)
{
return (defaultTransformer == null ? ConstantTransformer.NULL_INSTANCE : defaultTransformer);
}
transformers = new Transformer[size];
preds = new Predicate[size];
int i = 0;
for (java.util.Iterator<Object> it = (java.util.Iterator<Object>)predicatesAndTransformers.entrySet().iterator(); it.hasNext(); )
{
java.util.MapNS.Entry<Object, Object> entry = (java.util.MapNS.Entry<Object, Object>)it.next();
preds[i] = (Predicate)entry.getKey();
transformers[i] = (Transformer)entry.getValue();
i++;
}
return new SwitchTransformer(preds, transformers, defaultTransformer);
}
/**
* Create a new Closure that uses the input object as a key to find the
* closure to call.
* <p>
* The Map consists of object keys and Closure values. A closure
* is called if the input object equals the key. If there is no match, the
* default closure is called. The default closure is set in the map
* using a null key.
*
* @see org.apache.commons.collections.functors.SwitchClosure
*
* @param objectsAndClosures a map of objects to closures
* @return the closure
* @throws IllegalArgumentException if the map is null
* @throws IllegalArgumentException if the map is empty
* @throws IllegalArgumentException if any closure in the map is null
*/
public static Closure switchMapClosure(java.util.Map<Object, Object> objectsAndClosures)
{
Closure[] trs = null;
Predicate[] preds = null;
if (objectsAndClosures == null)
{
throw new java.lang.IllegalArgumentException("The object and closure map must not be null");
}
Closure def = (Closure)objectsAndClosures.remove(null);
int size = objectsAndClosures.size();
trs = new Closure[size];
preds = new Predicate[size];
int i = 0;
for (java.util.Iterator<java.util.MapNS.Entry<Object, Object>> it = objectsAndClosures.entrySet().iterator(); it.hasNext(); )
{
java.util.MapNS.Entry<Object, Object> entry = it.next();
preds[i] = EqualPredicate.getInstance(entry.getKey());
trs[i] = (Closure)entry.getValue();
i++;
}
return switchClosure(preds, trs, def);
}
/**
* Create a new Closure that calls one of the closures depending
* on the predicates.
* <p>
* The Map consists of Predicate keys and Closure values. A closure
* is called if its matching predicate returns true. Each predicate is evaluated
* until one returns true. If no predicates evaluate to true, the default
* closure is called. The default closure is set in the map with a
* null key. The ordering is that of the iterator() method on the entryset
* collection of the map.
*
* @param predicatesAndClosures a map of predicates to closures
* @return the <code>switch</code> closure
* @throws IllegalArgumentException if the map is null
* @throws IllegalArgumentException if any closure in the map is null
* @throws ClassCastException if the map elements are of the wrong type
*/
public static Closure getInstance(java.util.Map<Object, Object> predicatesAndClosures)
{
Closure[] closures = null;
Predicate[] preds = null;
if (predicatesAndClosures == null)
{
throw new java.lang.IllegalArgumentException("The predicate and closure map must not be null");
}
if (predicatesAndClosures.size() == 0)
{
return NOPClosure.INSTANCE;
}
// convert to array like this to guarantee iterator() ordering
Closure defaultClosure = (Closure)predicatesAndClosures.remove(null);
int size = predicatesAndClosures.size();
if (size == 0)
{
return (defaultClosure == null ? NOPClosure.INSTANCE : defaultClosure);
}
closures = new Closure[size];
preds = new Predicate[size];
int i = 0;
for (java.util.Iterator<Object> it = (java.util.Iterator<Object>)predicatesAndClosures.entrySet().iterator(); it.hasNext(); )
{
java.util.MapNS.Entry<Object, Object> entry = (java.util.MapNS.Entry<Object, Object>)it.next();
preds[i] = (Predicate)entry.getKey();
closures[i] = (Closure)entry.getValue();
i++;
}
return new SwitchClosure(preds, closures, defaultClosure);
}