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package rba.tool.core.sort;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import rba.core.ComparisonAnd;
import rba.core.ComparisonOperator;
import rba.core.EqualToOperator;
import rba.core.Expression;
import rba.core.GreaterThanOperator;
import rba.core.MuchGreaterThanOperator;
import rba.core.RuleObject;
import rba.core.ValueExpression;
abstract public class ValueSortedList<T extends RuleObject> {
private List<ValueGroup<T>> list;
private Collection<T> unsorted;
public ValueSortedList(Collection<T> originalList) {
list = new ArrayList<ValueGroup<T>>();
list.add(new ValueGroup<T>("MIN"));
list.add(new ValueGroup<T>("1"));
list.add(new ValueGroup<T>("MAX"));
unsorted = new ArrayList<T>(originalList);
sort();
}
public void add(T o) {
unsorted.add(o);
sort();
}
public void addAll(Collection<T> list) {
unsorted.addAll(list);
sort();
}
public void sort() {
list.get(0).getMember().addAll(unsorted);
unsorted.clear();
boolean trysort = true;
int retry = 0;
while (trysort) {
trysort = false;
retry = retry + 1;
if (retry > 100) {
throw new RuntimeException("Could not sort value [" + list + "]");
}
for (T i : sortedList()) {
int currentIndex = this.getGroupIndexOf(i);
Expression e = this.getValueExpression(i);
if (e == null)
continue;
if (e instanceof ValueExpression) {
int index = this.getGroupIndexOf(e.getExpression());
if (index == -1) {
index = ((ValueExpression) e).getExpressionValue();
if (index == -1) {
index = 0;
}
if (index >= list.size() - 1) {
list.get(currentIndex).remove(i);
addGroupAt(index, i);
trysort = true;
continue;
}
}
if (index != currentIndex) {
list.get(currentIndex).remove(i);
list.get(index).add(i);
trysort = true;
} else {
}
} else if (e instanceof ComparisonOperator) {
ComparisonOperatorEvaluator<T> evaluator = createEvaluator((ComparisonOperator) e);
int index = evaluator.suggestIndex(this);
if (index < 0)
continue;
if (index >= list.size() - 1) {
list.get(currentIndex).remove(i);
addGroupAt(index, i);
trysort = true;
} else if (index != currentIndex) {
list.get(currentIndex).remove(i);
list.get(index).add(i);
trysort = true;
} else {
}
} else {
throw new RuntimeException("Unsupported expression [" + e.getExpression() + "]");
}
}
}
}
private void addGroupAt(int index, T e) {
if (index >= list.size() - 1) {
for (int i = list.size() - 1; i <= index; ++i) {
ValueGroup<T> newGroup = new ValueGroup<T>(Integer.toString(i));
list.add(i, newGroup);
}
}
list.get(index).add(e);
}
public List<T> sortedList() {
List<T> result = new ArrayList<T>();
for (ValueGroup<T> i : list) {
result.addAll(i.getMember());
}
return result;
}
public List<ValueGroup<T>> getGroupList() {
return list;
}
public List<T> sortedListByBig() {
List<T> result = new ArrayList<T>();
for (int index = list.size() - 1; index >= 0; index--) {
ValueGroup<T> i = list.get(index);
result.addAll(i.getMember());
}
return result;
}
abstract protected Expression getValueExpression(T e);
public int getGroupIndexOf(T e) {
for (ValueGroup<T> i : list) {
if (i.getMember().contains(e)) {
return list.indexOf(i);
}
}
return -1;
}
public int getGroupIndexOf(String groupName) {
for (ValueGroup<T> i : list) {
if (i.getName().contentEquals(groupName)) {
return list.indexOf(i);
}
}
return -1;
}
public ComparisonOperatorEvaluator<T> createEvaluator(ComparisonOperator e) {
ComparisonOperatorEvaluator<T> evaluator;
if (e instanceof GreaterThanOperator) {
evaluator = new GreaterThanOperatorEvaluator<T>((GreaterThanOperator) e);
} else if (e instanceof MuchGreaterThanOperator) {
evaluator = new MuchGreaterThanOperatorEvaluator<T>((MuchGreaterThanOperator) e);
} else if (e instanceof ComparisonAnd) {
evaluator = new ComparisonAndEvaluator<T>((ComparisonAnd) e);
} else if (e instanceof EqualToOperator) {
evaluator = new EqualToOperatorEvaluator<T>((EqualToOperator) e);
} else {
throw new RuntimeException("Unsupported expression [" + e.getExpression() + "]");
}
return evaluator;
}
}
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