org.eclipse.qvtd.compiler.internal.scheduler.AbstractSimpleNode.java Source code

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/*******************************************************************************
 * Copyright (c) 2015 Willink Transformations and others.
 * All rights reserved.   This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *   E.D.Willink - Initial API and implementation
 *******************************************************************************/
package org.eclipse.qvtd.compiler.internal.scheduler;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.eclipse.jdt.annotation.NonNull;
import org.eclipse.jdt.annotation.Nullable;
import org.eclipse.ocl.pivot.Property;
import org.eclipse.ocl.pivot.TypedElement;

import com.google.common.collect.Iterables;

public abstract class AbstractSimpleNode extends AbstractNode implements SimpleNode {
    private final @NonNull List<TypedElement> typedElements = new ArrayList<TypedElement>();

    protected AbstractSimpleNode(@NonNull NodeRole nodeRole, @NonNull SimpleRegion region, @NonNull String name,
            @NonNull ClassDatumAnalysis classDatumAnalysis) {
        super(nodeRole, region, name, classDatumAnalysis);
    }

    @Override
    public void addTypedElement(@NonNull TypedElement typedElement) {
        boolean wasAdded = typedElements.add(typedElement);
        assert wasAdded;
    }

    @Override
    public final @NonNull Iterable<SimpleNavigationEdge> getCastEdges() {
        @SuppressWarnings({ "null", "unchecked" })
        @NonNull
        Iterable<SimpleNavigationEdge> filter = (Iterable<SimpleNavigationEdge>) (Object) Iterables
                .filter(getOutgoingEdges(), AbstractRegion.IsCastEdgePredicate.INSTANCE);
        return filter;
    }

    @Override
    public @Nullable SimpleNavigationEdge getNavigationEdge(@NonNull Property source2targetProperty) {
        return (SimpleNavigationEdge) super.getNavigationEdge(source2targetProperty);
    }

    @Override
    public @Nullable SimpleNode getNavigationTarget(@NonNull Property source2targetProperty) {
        return (SimpleNode) super.getNavigationTarget(source2targetProperty);
    }

    @Override
    public final @Nullable SimpleEdge getPredicateEdge(@NonNull Property source2targetProperty) {
        for (Edge edge : getOutgoingEdges()) {
            if (edge.isPredicated() && (edge instanceof NavigationEdge) && (edge instanceof SimpleEdge)) {
                if (((NavigationEdge) edge).getProperty() == source2targetProperty) {
                    return (SimpleEdge) edge;
                }
            }
        }
        return null;
    }

    @Override
    public @NonNull SimpleRegion getRegion() {
        return (SimpleRegion) region;
    }

    @Override
    public final @NonNull Iterable<? extends SimpleEdge> getResultEdges() {
        @SuppressWarnings({ "null", "unchecked" })
        @NonNull
        Iterable<SimpleEdge> filter = (Iterable<SimpleEdge>) (Object) Iterables.filter(getOutgoingEdges(),
                AbstractRegion.IsExpressionEdgePredicate.INSTANCE);
        return filter;
    }

    @Override
    public @NonNull Iterable<SimpleNode> getSimpleNodes() {
        return this;
    }

    @Override
    public Iterator<SimpleNode> iterator() {
        return new SingletonIterator<SimpleNode>(this);
    }

    @Override
    public @NonNull Iterable<TypedElement> getTypedElements() {
        return typedElements;
    }
}