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package rba.core.generator.util.value;
import org.eclipse.emf.common.util.EList;
import rba.core.Expression;
import rba.core.GreaterThanOperator;
import rba.core.LetStatement;
import rba.core.ObjectReference;
import rba.core.RuleObject;
import rba.core.ThatOfOperator;
import rba.core.ValueExpression;
public class GreaterThanOperatorEvaluator<T extends RuleObject> extends ComparisonOperatorEvaluator<T> implements GreaterThanOperator {
protected GreaterThanOperatorEvaluator(GreaterThanOperator o) {
super(o);
}
@Override
public boolean evaluate(ValueSortedList<T> list) {
Expression operand = operator.getOperand().get(0);
if (operand instanceof ObjectReference) {
T object = (T) ((ObjectReference) operand).getRefObject();
return (list.getGroupIndexOf(subject) > list.getGroupIndexOf(object));
}
return false;
}
@Override
public int suggestIndex(ValueSortedList<T> list) {
Expression operand = operator.getOperand().get(0);
if (operand instanceof ThatOfOperator) {
Expression target = ((ThatOfOperator) operand).getOperand().get(0);
if (target instanceof ObjectReference) {
T object = (T) ((ObjectReference) target).getRefObject();
if (list.getGroupIndexOf(subject) > list.getGroupIndexOf(object)) {
return -1;
} else {
return list.getGroupIndexOf(object) + 1;
}
}
} else if (operand instanceof ValueExpression) {
int i = ((ValueExpression) operand).getExpressionValue();
if (list.getGroupIndexOf(subject) > i) {
return -1;
} else {
return i + 1;
}
}
throw new RuntimeException("Unsupported expression [" + operator.getExpression() + "]");
}
@Override
public EList<LetStatement> getLetStatements() {
// TODO Auto-generated method stub
return null;
}
}
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