GPPLanguage.java example

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/*******************************************************************************
 * Copyright (c) 2005, 2016 QNX Software Systems 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:
 *     QNX - Initial API and implementation
 *     Markus Schorn (Wind River Systems)
 *     IBM Corporation
 *     Anton Leherbauer (Wind River Systems)
 *     Mike Kucera - IBM
 *******************************************************************************/
package org.eclipse.cdt.core.dom.ast.gnu.cpp;

import org.eclipse.cdt.core.CCorePlugin;
import org.eclipse.cdt.core.dom.ILinkage;
import org.eclipse.cdt.core.dom.parser.AbstractCLikeLanguage;
import org.eclipse.cdt.core.dom.parser.IScannerExtensionConfiguration;
import org.eclipse.cdt.core.dom.parser.ISourceCodeParser;
import org.eclipse.cdt.core.dom.parser.cpp.GPPParserExtensionConfiguration;
import org.eclipse.cdt.core.dom.parser.cpp.GPPScannerExtensionConfiguration;
import org.eclipse.cdt.core.dom.parser.cpp.ICPPParserExtensionConfiguration;
import org.eclipse.cdt.core.index.IIndex;
import org.eclipse.cdt.core.parser.IParserLogService;
import org.eclipse.cdt.core.parser.IParserSettings;
import org.eclipse.cdt.core.parser.IScanner;
import org.eclipse.cdt.core.parser.IScannerInfo;
import org.eclipse.cdt.core.parser.ParserLanguage;
import org.eclipse.cdt.core.parser.ParserMode;
import org.eclipse.cdt.internal.core.dom.parser.cpp.GNUCPPSourceParser;
import org.eclipse.cdt.internal.core.pdom.dom.IPDOMLinkageFactory;
import org.eclipse.cdt.internal.core.pdom.dom.cpp.PDOMCPPLinkageFactory;

/**
 * Concrete ILanguage implementation for the DOM C++ parser.
 */
public class GPPLanguage extends AbstractCLikeLanguage {
	protected static final GPPScannerExtensionConfiguration CPP_GNU_SCANNER_EXTENSION= GPPScannerExtensionConfiguration.getInstance();
	protected static final GPPParserExtensionConfiguration CPP_GNU_PARSER_EXTENSION= GPPParserExtensionConfiguration.getInstance();
	public static final String ID = CCorePlugin.PLUGIN_ID + ".g++"; //$NON-NLS-1$

	/** 
	 * @since 5.6
	 * @deprecated This was meant for internal use only. 
	 */
	@Deprecated
	public static final int GNU_LATEST_VERSION_MAJOR = 4;
	/** 
	 * @since 5.6
	 * @deprecated This was meant for internal use only. 
	 */
	@Deprecated
	public static final int GNU_LATEST_VERSION_MINOR = 7;

	private static final GPPLanguage DEFAULT_INSTANCE = new GPPLanguage();
	
	public static GPPLanguage getDefault() {
		return DEFAULT_INSTANCE;
	}
	
	@Override
	@SuppressWarnings("unchecked")
	public <T> T getAdapter(Class<T> adapter) {
		if (adapter.isAssignableFrom(IPDOMLinkageFactory.class)) {
			return (T) new PDOMCPPLinkageFactory();
		}
		return super.getAdapter(adapter);
	}
	
	@Override
	public String getId() {
		return ID;
	}
	
	@Override
	public int getLinkageID() {
		return ILinkage.CPP_LINKAGE_ID;
	}

	/**
	 * @nooverride This method is not intended to be re-implemented or extended by clients.
	 * @deprecated Since 5.4 not called by the framework. Override
	 *     {@link #getScannerExtensionConfiguration(IScannerInfo)} instead.
	 */
	@Deprecated
	@Override
	protected IScannerExtensionConfiguration getScannerExtensionConfiguration() {
		return CPP_GNU_SCANNER_EXTENSION;
	}

	/**
	 * @since 5.4
	 */
	@Override
	protected IScannerExtensionConfiguration getScannerExtensionConfiguration(IScannerInfo info) {
		return GPPScannerExtensionConfiguration.getInstance(info);
	}

	/**
	 * Returns the extension configuration used for creating the parser.
	 * @since 5.1
	 */
	protected ICPPParserExtensionConfiguration getParserExtensionConfiguration() {
		return CPP_GNU_PARSER_EXTENSION;
	}

	@Override
	protected ISourceCodeParser createParser(IScanner scanner, ParserMode parserMode, IParserLogService logService, IIndex index) {
		return new GNUCPPSourceParser(scanner, parserMode, logService, getParserExtensionConfiguration(), index);
	}

	@Override
	protected ISourceCodeParser createParser(IScanner scanner, ParserMode parserMode, IParserLogService logService, IIndex index,
			int options, IParserSettings settings) {
		GNUCPPSourceParser parser = new GNUCPPSourceParser(scanner, parserMode, logService, getParserExtensionConfiguration(), index);
		if (settings != null) {
			int maximumTrivialExpressions = settings.getMaximumTrivialExpressionsInAggregateInitializers();
			if (maximumTrivialExpressions >= 0 && (options & OPTION_SKIP_TRIVIAL_EXPRESSIONS_IN_AGGREGATE_INITIALIZERS) != 0) {
					parser.setMaximumTrivialExpressionsInAggregateInitializers(maximumTrivialExpressions);
			}
		}
		return parser;
	}

	@Override
	protected ParserLanguage getParserLanguage() {
		return ParserLanguage.CPP;
	}
}