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Scala example source code file (AggregateCompleter.java)
The AggregateCompleter.java Scala example source code/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. */ package scala.tools.jline.console.completer; import java.util.ArrayList; import java.util.Arrays; import java.util.Collection; import java.util.LinkedList; import java.util.List; /** * Completer which contains multiple completers and aggregates them together. * * @author <a href="mailto:jason@planet57.com">Jason Dillon</a> * @since 2.3 */ public class AggregateCompleter implements Completer { private final List<Completer> completers = new ArrayList<Completer>(); public AggregateCompleter() { // empty } public AggregateCompleter(final Collection<Completer> completers) { assert completers != null; this.completers.addAll(completers); } public AggregateCompleter(final Completer... completers) { this(Arrays.asList(completers)); } public Collection<Completer> getCompleters() { return completers; } public int complete(final String buffer, final int cursor, final List<CharSequence> candidates) { // buffer could be null assert candidates != null; List<Completion> completions = new ArrayList<Completion>(completers.size()); // Run each completer, saving its completion results int max = -1; for (Completer completer : completers) { Completion completion = new Completion(candidates); completion.complete(completer, buffer, cursor); // Compute the max cursor position max = Math.max(max, completion.cursor); completions.add(completion); } // Append candidates from completions which have the same cursor position as max for (Completion completion : completions) { if (completion.cursor == max) { candidates.addAll(completion.candidates); } } return max; } @Override public String toString() { return getClass().getSimpleName() + "{" + "completers=" + completers + '}'; } private class Completion { public final List<CharSequence> candidates; public int cursor; public Completion(final List<CharSequence> candidates) { assert candidates != null; this.candidates = new LinkedList<CharSequence>(candidates); } public void complete(final Completer completer, final String buffer, final int cursor) { assert completer != null; this.cursor = completer.complete(buffer, cursor, candidates); } } } Other Scala source code examplesHere is a short list of links related to this Scala AggregateCompleter.java source code file: |
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