| /*=============================================================================# |
| # Copyright (c) 2012, 2020 Stephan Wahlbrink and others. |
| # |
| # This program and the accompanying materials are made available under the |
| # terms of the Eclipse Public License 2.0 which is available at |
| # https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0 |
| # which is available at https://www.apache.org/licenses/LICENSE-2.0. |
| # |
| # SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 |
| # |
| # Contributors: |
| # Stephan Wahlbrink <sw@wahlbrink.eu> - initial API and implementation |
| #=============================================================================*/ |
| |
| package org.eclipse.statet.rj.renv.core; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| |
| import org.eclipse.statet.jcommons.collections.SortedArraySet; |
| import org.eclipse.statet.jcommons.lang.NonNull; |
| import org.eclipse.statet.jcommons.lang.NonNullByDefault; |
| import org.eclipse.statet.jcommons.lang.Nullable; |
| |
| |
| @NonNullByDefault |
| public class BasicRPkgCompilation<T extends RPkg> implements RPkgCompilation<T> { |
| |
| |
| /** Package sources */ |
| private final List<String> sources; |
| /** Packages by sources */ |
| private final List<RPkgList<T>> pkgLists; |
| |
| private @Nullable volatile List<String> names; |
| |
| |
| public BasicRPkgCompilation(final int size) { |
| this.sources= new ArrayList<>(size); |
| this.pkgLists= new ArrayList<>(size); |
| } |
| |
| |
| public void add(final String source, final RPkgList<T> list) { |
| this.sources.add((source != null) ? source : ""); //$NON-NLS-1$ |
| this.pkgLists.add(list); |
| } |
| |
| public RPkgList<T> getOrAdd(final String source) { |
| RPkgList<T> list= getBySource(source); |
| if (list == null) { |
| list= newPkgList(); |
| add(source, list); |
| } |
| return list; |
| } |
| |
| protected RPkgList<T> newPkgList() { |
| return new BasicRPkgList<>(4); |
| } |
| |
| |
| @Override |
| @SuppressWarnings("null") |
| public List<String> getNames() { |
| if (this.names == null) { |
| createNames(); |
| } |
| return this.names; |
| } |
| |
| private synchronized void createNames() { |
| if (this.names != null) { |
| return; |
| } |
| if (this.pkgLists.isEmpty()) { |
| this.names= Collections.emptyList(); |
| return; |
| } |
| { final SortedArraySet<String> names= new SortedArraySet<>( |
| new @NonNull String[Math.min(16, this.pkgLists.get(0).size())], 0, |
| RPkgUtils.NAMES_COLLATOR ); |
| for (final RPkgList<? extends RPkg> list : this.pkgLists) { |
| for (int i= 0; i < list.size(); i++) { |
| names.addE(list.get(i).getName()); |
| } |
| } |
| this.names= Collections.unmodifiableList(names); |
| } |
| } |
| |
| @Override |
| public boolean contains(final String name) { |
| for (final RPkgList<? extends RPkg> list : this.pkgLists) { |
| final int idx= list.indexOf(name); |
| if (idx >= 0) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| @Override |
| public @Nullable T getFirst(final String name) { |
| for (final RPkgList<T> list : this.pkgLists) { |
| final int idx= list.indexOf(name); |
| if (idx >= 0) { |
| return list.get(idx); |
| } |
| } |
| return null; |
| } |
| |
| @Override |
| public List<T> get(final String name) { |
| List<T> result= null; |
| for (final RPkgList<T> list : this.pkgLists) { |
| final int idx= list.indexOf(name); |
| if (idx >= 0) { |
| if (result == null) { |
| result= new ArrayList<>(2); |
| } |
| result.add(list.get(idx)); |
| } |
| } |
| return (result != null) ? result : Collections.<T>emptyList(); |
| } |
| |
| @Override |
| public List<String> getSources() { |
| return this.sources; |
| } |
| |
| @Override |
| public @Nullable RPkgList<T> getBySource(final String source) { |
| final int idx= this.sources.indexOf(source); |
| return (idx >= 0) ? this.pkgLists.get(idx) : null; |
| } |
| |
| @Override |
| public List<RPkgList<T>> getAll() { |
| return this.pkgLists; |
| } |
| |
| } |