/**
*
* Copyright (c) 2014, the Railo Company Ltd. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
**/
package lucee.runtime.functions.closure;
import java.util.Enumeration;
import java.util.Iterator;
import java.util.List;
import java.util.ListIterator;
import java.util.Map.Entry;
import lucee.runtime.PageContext;
import lucee.runtime.exp.CasterException;
import lucee.runtime.exp.FunctionException;
import lucee.runtime.exp.PageException;
import lucee.runtime.ext.function.BIF;
import lucee.runtime.op.Caster;
import lucee.runtime.type.Array;
import lucee.runtime.type.Collection.Key;
import lucee.runtime.type.Iteratorable;
import lucee.runtime.type.Query;
import lucee.runtime.type.Struct;
import lucee.runtime.type.UDF;
import lucee.runtime.type.it.ForEachQueryIterator;
import lucee.runtime.type.scope.ArgumentIntKey;
import lucee.runtime.type.util.ListUtil;
import lucee.runtime.type.util.StringListData;
public class Reduce extends BIF {
private static final long serialVersionUID = -5940580562772523622L;
public static Object call(PageContext pc , Object obj, UDF udf) throws PageException {
return _call(pc, obj, udf,null);
}
public static Object call(PageContext pc , Object obj, UDF udf, Object initalValue) throws PageException {
return _call(pc, obj, udf,initalValue);
}
public static Object _call(PageContext pc , Object obj, UDF udf, Object initalValue) throws PageException {
Object value;
// Array
if(obj instanceof Array) {
value=invoke(pc, (Array)obj, udf,initalValue);
}
// Query
else if(obj instanceof Query) {
value=invoke(pc, (Query)obj, udf,initalValue);
}
// Struct
else if(obj instanceof Struct) {
value=invoke(pc, (Struct)obj, udf,initalValue);
}
// other Iteratorable
else if(obj instanceof Iteratorable) {
value=invoke(pc, (Iteratorable)obj, udf,initalValue);
}
// Map
else if(obj instanceof java.util.Map) {
value=invoke(pc, (java.util.Map)obj, udf,initalValue);
}
//List
else if(obj instanceof List) {
value=invoke(pc, (List)obj, udf,initalValue);
}
// Iterator
else if(obj instanceof Iterator) {
value=invoke(pc, (Iterator)obj, udf,initalValue);
}
// Enumeration
else if(obj instanceof Enumeration) {
value=invoke(pc, (Enumeration)obj, udf,initalValue);
}
else if(obj instanceof StringListData) {
value=invoke(pc, (StringListData)obj, udf,initalValue);
}
else
throw new FunctionException(pc, "Filter", 1, "data", "cannot iterate througth this type "+Caster.toTypeName(obj.getClass()));
return value;
}
private static Object invoke(PageContext pc, Array arr, UDF udf, Object initalValue) throws CasterException, PageException {
Iterator<Entry<Key, Object>> it = arr.entryIterator();
Entry<Key, Object> e;
while(it.hasNext()){
e = it.next();
initalValue=udf.call(pc, new Object[]{initalValue,e.getValue(),Caster.toDoubleValue(e.getKey().getString()),arr}, true);
}
return initalValue;
}
private static Object invoke(PageContext pc, StringListData sld, UDF udf, Object initalValue) throws CasterException, PageException {
Array arr = ListUtil.listToArray(sld.list, sld.delimiter,sld.includeEmptyFieldsx,sld.multiCharacterDelimiter);
Iterator<Entry<Key, Object>> it = arr.entryIterator();
Entry<Key, Object> e;
while(it.hasNext()){
e = it.next();
initalValue=udf.call(pc, new Object[]{initalValue,e.getValue(),Caster.toDoubleValue(e.getKey().getString()),sld.list,sld.delimiter}, true);
}
return initalValue;
}
private static Object invoke(PageContext pc, Query qry, UDF udf, Object initalValue) throws CasterException, PageException {
final int pid=pc.getId();
ForEachQueryIterator it=new ForEachQueryIterator(qry, pid);
int rowNbr;
Object row;
while(it.hasNext()){
row = it.next();
rowNbr = qry.getCurrentrow(pid);
initalValue=udf.call(pc, new Object[]{initalValue,row,Caster.toDoubleValue(rowNbr),qry}, true);
}
return initalValue;
}
private static Object invoke(PageContext pc, List list, UDF udf, Object initalValue) throws CasterException, PageException {
ListIterator it = list.listIterator();
Object v;
int index;
ArgumentIntKey k;
while(it.hasNext()){
index = it.nextIndex();
k = ArgumentIntKey.init(index);
v = it.next();
initalValue=udf.call(pc, new Object[]{initalValue,v,Caster.toDoubleValue(k.getString()),list}, true);
}
return initalValue;
}
private static Object invoke(PageContext pc, Struct sct, UDF udf, Object initalValue) throws PageException {
Iterator<Entry<Key, Object>> it = sct.entryIterator();
Entry<Key, Object> e;
while(it.hasNext()){
e = it.next();
initalValue=udf.call(pc, new Object[]{initalValue,e.getKey().getString(),e.getValue(),sct}, true);
}
return initalValue;
}
private static Object invoke(PageContext pc, java.util.Map map, UDF udf, Object initalValue) throws PageException {
Iterator<Entry> it = map.entrySet().iterator();
Entry e;
while(it.hasNext()){
e = it.next();
initalValue=udf.call(pc, new Object[]{initalValue,e.getKey(),e.getValue(),map}, true);
}
return initalValue;
}
private static Object invoke(PageContext pc, Iteratorable i, UDF udf, Object initalValue) throws PageException {
Iterator<Entry<Key, Object>> it = i.entryIterator();
Entry<Key, Object> e;
while(it.hasNext()){
e = it.next();
initalValue=udf.call(pc, new Object[]{initalValue,e.getKey().getString(),e.getValue()}, true);
}
return initalValue;
}
private static Object invoke(PageContext pc, Iterator it, UDF udf, Object initalValue) throws PageException {
Object v;
int count=0;
ArgumentIntKey k;
while(it.hasNext()){
v = it.next();
k = ArgumentIntKey.init(++count);
initalValue=udf.call(pc, new Object[]{initalValue,v}, true);
}
return initalValue;
}
private static Object invoke(PageContext pc, Enumeration e, UDF udf, Object initalValue) throws PageException {
Object v;
int count=0;
ArgumentIntKey k;
while(e.hasMoreElements()){
v = e.nextElement();
k = ArgumentIntKey.init(++count);
initalValue=udf.call(pc, new Object[]{initalValue,v}, true);
}
return initalValue;
}
@Override
public Object invoke(PageContext pc, Object[] args) throws PageException {
if(args.length==2)
return call(pc, (args[0]), Caster.toFunction(args[1]));
if(args.length==3)
return call(pc, (args[0]), Caster.toFunction(args[1]), args[2]);
throw new FunctionException(pc, "Reduce", 2, 3, args.length);
}
}