diff options
Diffstat (limited to 'rba.model.core/src/rba/core/generator/util/value/GreaterThanOperatorEvaluator.java')
-rw-r--r-- | rba.model.core/src/rba/core/generator/util/value/GreaterThanOperatorEvaluator.java | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/rba.model.core/src/rba/core/generator/util/value/GreaterThanOperatorEvaluator.java b/rba.model.core/src/rba/core/generator/util/value/GreaterThanOperatorEvaluator.java new file mode 100644 index 0000000..4b3506d --- /dev/null +++ b/rba.model.core/src/rba/core/generator/util/value/GreaterThanOperatorEvaluator.java @@ -0,0 +1,62 @@ +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; + } +} |