package com.sap.runlet.interpreter.expressions;
import java.lang.reflect.InvocationTargetException;
import java.util.Collection;
import behavioral.actions.Statement;
import com.sap.runlet.abstractinterpreter.Interpreter;
import com.sap.runlet.abstractinterpreter.objects.MultiValuedObject;
import com.sap.runlet.abstractinterpreter.objects.RunletObject;
import com.sap.runlet.interpreter.RunletInterpreter;
import com.sap.runlet.interpreter.RunletStackFrame;
import data.classes.Association;
import data.classes.AssociationEnd;
import data.classes.ClassTypeDefinition;
import data.classes.NativeImpl;
import data.classes.SapClass;
import data.classes.SignatureImplementation;
import data.classes.TypeDefinition;
import dataaccess.expressions.Expression;
import dataaccess.expressions.collectionexpressions.Excluding;
/**
* Interprets the {@link Excluding} expression which creates a new multi-object
* from an existing one by copying all contained objects except for those specified
* for exclusion.
*
* @author Axel Uhl (D043530)
*/
public class ExcludingInterpreter implements Interpreter<Excluding, SapClass, TypeDefinition, ClassTypeDefinition, Association, AssociationEnd, Statement, Expression, SignatureImplementation, RunletStackFrame, NativeImpl, RunletInterpreter> {
private Excluding excluding;
public ExcludingInterpreter(Excluding excluding) {
this.excluding = excluding;
}
@Override
public RunletObject<AssociationEnd, TypeDefinition, ClassTypeDefinition> evaluate(RunletInterpreter interpreter)
throws SecurityException, IllegalArgumentException,
NoSuchMethodException, InstantiationException,
IllegalAccessException, InvocationTargetException {
Collection<RunletObject<AssociationEnd, TypeDefinition, ClassTypeDefinition>> resultCollection = RunletObject.createCollection(
excluding.getType().isOrdered(), excluding.getType().isUnique());
Collection<RunletObject<AssociationEnd, TypeDefinition, ClassTypeDefinition>> stillToExclude = RunletObject.createCollection(
excluding.getArgument().getType().isOrdered(), excluding.getArgument().getType().isUnique());
RunletObject<AssociationEnd, TypeDefinition, ClassTypeDefinition> arg = interpreter.evaluate(excluding.getArgument());
for (RunletObject<AssociationEnd, TypeDefinition, ClassTypeDefinition> argObject:arg) {
stillToExclude.add(argObject);
}
RunletObject<AssociationEnd, TypeDefinition, ClassTypeDefinition> source = interpreter.evaluate(excluding.getSource());
for (RunletObject<AssociationEnd, TypeDefinition, ClassTypeDefinition> sourceObject:source) {
if (stillToExclude.contains(sourceObject)) {
stillToExclude.remove(sourceObject);
} else {
resultCollection.add(sourceObject);
}
}
MultiValuedObject<AssociationEnd, TypeDefinition, ClassTypeDefinition> result =
new MultiValuedObject<AssociationEnd, TypeDefinition, ClassTypeDefinition>(
excluding.getType(), resultCollection, excluding.getType().isOrdered(), excluding.getType().isUnique());
return result;
}
}