| /******************************************************************************* |
| * Copyright (c) 2006, 2012 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.cdt.core.dom.parser; |
| |
| import java.util.HashSet; |
| import java.util.Iterator; |
| import java.util.Set; |
| |
| import org.eclipse.cdt.core.model.ICLanguageKeywords; |
| import org.eclipse.cdt.core.parser.KeywordSetKey; |
| import org.eclipse.cdt.core.parser.ParserLanguage; |
| import org.eclipse.cdt.core.parser.util.CharArrayIntMap; |
| import org.eclipse.cdt.internal.core.parser.token.KeywordSets; |
| |
| /** |
| * This class allows provides a reusable implementation of ICLanguageKeywords |
| * for use by ILanguage implementations. |
| * |
| * @author Mike Kucera |
| * @since 5.1 |
| */ |
| public class CLanguageKeywords implements ICLanguageKeywords { |
| private final ParserLanguage language; |
| private final IScannerExtensionConfiguration config; |
| |
| // lazily initialized |
| private String[] keywords = null; |
| private String[] builtinTypes = null; |
| private String[] preprocessorKeywords = null; |
| |
| /** |
| * @throws NullPointerException if either parameter is null |
| */ |
| public CLanguageKeywords(ParserLanguage language, IScannerExtensionConfiguration config) { |
| if (language == null) |
| throw new NullPointerException("language is null"); //$NON-NLS-1$ |
| if (config == null) |
| throw new NullPointerException("config is null"); //$NON-NLS-1$ |
| |
| this.language = language; |
| this.config = config; |
| } |
| |
| @Override |
| public String[] getKeywords() { |
| if (keywords == null) { |
| Set<String> keywordSet = new HashSet<>(KeywordSets.getKeywords(KeywordSetKey.KEYWORDS, language)); |
| CharArrayIntMap additionalKeywords = config.getAdditionalKeywords(); |
| if (additionalKeywords != null) { |
| for (Iterator<char[]> iterator = additionalKeywords.toList().iterator(); iterator.hasNext();) { |
| char[] name = iterator.next(); |
| keywordSet.add(new String(name)); |
| } |
| } |
| keywords = keywordSet.toArray(new String[keywordSet.size()]); |
| } |
| return keywords; |
| } |
| |
| @Override |
| public String[] getBuiltinTypes() { |
| if (builtinTypes == null) { |
| Set<String> types = KeywordSets.getKeywords(KeywordSetKey.TYPES, language); |
| builtinTypes = types.toArray(new String[types.size()]); |
| } |
| return builtinTypes; |
| } |
| |
| @Override |
| public String[] getPreprocessorKeywords() { |
| if (preprocessorKeywords == null) { |
| Set<String> keywords = new HashSet<>(KeywordSets.getKeywords(KeywordSetKey.PP_DIRECTIVE, language)); |
| CharArrayIntMap additionalKeywords = config.getAdditionalPreprocessorKeywords(); |
| if (additionalKeywords != null) { |
| for (Iterator<char[]> iterator = additionalKeywords.toList().iterator(); iterator.hasNext();) { |
| char[] name = iterator.next(); |
| keywords.add(new String(name)); |
| } |
| } |
| preprocessorKeywords = keywords.toArray(new String[keywords.size()]); |
| } |
| return preprocessorKeywords; |
| } |
| } |