core/org.eclipse.cdt.core/parser/org/eclipse/cdt/core/dom/parser/AbstractCLikeLanguage.java - cdt/org.eclipse.cdt - Git at Google

 /*******************************************************************************
  * Copyright (c) 2007, 2015 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:
  *     Anton Leherbauer (Wind River Systems) - initial API and implementation
  *     Markus Schorn (Wind River Systems)
  *     Mike Kucera (IBM)
  *     Sergey Prigogin (Google)
  *     Thomas Corbat (IFS)
  *******************************************************************************/
 package org.eclipse.cdt.core.dom.parser;

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

 import org.eclipse.cdt.core.dom.ast.ASTVisitor;
 import org.eclipse.cdt.core.dom.ast.IASTCompletionNode;
 import org.eclipse.cdt.core.dom.ast.IASTName;
 import org.eclipse.cdt.core.dom.ast.IASTNode;
 import org.eclipse.cdt.core.dom.ast.IASTPreprocessorMacroExpansion;
 import org.eclipse.cdt.core.dom.ast.IASTTranslationUnit;
 import org.eclipse.cdt.core.index.IIndex;
 import org.eclipse.cdt.core.model.AbstractLanguage;
 import org.eclipse.cdt.core.model.ICLanguageKeywords;
 import org.eclipse.cdt.core.model.IContributedModelBuilder;
 import org.eclipse.cdt.core.model.ITranslationUnit;
 import org.eclipse.cdt.core.parser.ExtendedScannerInfo;
 import org.eclipse.cdt.core.parser.FileContent;
 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.IncludeFileContentProvider;
 import org.eclipse.cdt.core.parser.ParseError;
 import org.eclipse.cdt.core.parser.ParseError.ParseErrorKind;
 import org.eclipse.cdt.core.parser.ParserLanguage;
 import org.eclipse.cdt.core.parser.ParserMode;
 import org.eclipse.cdt.internal.core.parser.scanner.CPreprocessor;
 import org.eclipse.cdt.internal.core.util.ICancelable;
 import org.eclipse.cdt.internal.core.util.ICanceler;
 import org.eclipse.core.runtime.CoreException;

 /**
  * This class provides a skeletal implementation of the ILanguage interface
  * for the DOM parser framework.
  *
  * This class uses the template method pattern, derived classes need only implement
  * {@link AbstractCLikeLanguage#getScannerExtensionConfiguration(IScannerInfo info)},
  * {@link AbstractCLikeLanguage#getParserLanguage()} and
  * {@link AbstractCLikeLanguage#createParser(IScanner scanner, ParserMode parserMode,
  *                                           IParserLogService logService, IIndex index)}.
  *
  * @see AbstractScannerExtensionConfiguration
  *
  * @since 5.0
  */
 public abstract class AbstractCLikeLanguage extends AbstractLanguage implements ICLanguageKeywords {
 	private static final AbstractScannerExtensionConfiguration DUMMY_SCANNER_EXTENSION_CONFIGURATION = new AbstractScannerExtensionConfiguration() {
 	};

 	static class NameCollector extends ASTVisitor {
 		{
 			shouldVisitNames = true;
 		}

 		private List<IASTName> nameList = new ArrayList<>();

 		@Override
 		public int visit(IASTName name) {
 			nameList.add(name);
 			return PROCESS_CONTINUE;
 		}

 		public IASTName[] getNames() {
 			return nameList.toArray(new IASTName[nameList.size()]);
 		}
 	}

 	/**
 	 * @nooverride This method is not intended to be re-implemented or extended by clients.
 	 * @deprecated Do not override this method.
 	 *     Override {@link #getScannerExtensionConfiguration(IScannerInfo)} instead.
 	 */
 	@Deprecated
 	protected IScannerExtensionConfiguration getScannerExtensionConfiguration() {
 		return DUMMY_SCANNER_EXTENSION_CONFIGURATION;
 	}

 	/**
 	 * @return the scanner extension configuration for this language. May not return {@code null}.
 	 * @since 5.4
 	 */
 	protected IScannerExtensionConfiguration getScannerExtensionConfiguration(IScannerInfo info) {
 		return getScannerExtensionConfiguration();
 	}

 	/**
 	 * @return the actual parser object.
 	 */
 	protected abstract ISourceCodeParser createParser(IScanner scanner, ParserMode parserMode,
 			IParserLogService logService, IIndex index);

 	/**
 	 * @return the actual parser object, configured with additional settings.
 	 * @since 5.6
 	 */
 	protected ISourceCodeParser createParser(IScanner scanner, ParserMode parserMode, IParserLogService logService,
 			IIndex index, int options, IParserSettings settings) {
 		return createParser(scanner, parserMode, logService, index);
 	}

 	/**
 	 * @return The ParserLanguage value corresponding to the language supported.
 	 */
 	protected abstract ParserLanguage getParserLanguage();

 	@Deprecated
 	@Override
 	public IASTTranslationUnit getASTTranslationUnit(org.eclipse.cdt.core.parser.CodeReader reader,
 			IScannerInfo scanInfo, org.eclipse.cdt.core.dom.ICodeReaderFactory fileCreator, IIndex index,
 			IParserLogService log) throws CoreException {
 		return getASTTranslationUnit(reader, scanInfo, fileCreator, index, 0, log);
 	}

 	@Deprecated
 	@Override
 	public IASTTranslationUnit getASTTranslationUnit(org.eclipse.cdt.core.parser.CodeReader reader,
 			IScannerInfo scanInfo, org.eclipse.cdt.core.dom.ICodeReaderFactory codeReaderFactory, IIndex index,
 			int options, IParserLogService log) throws CoreException {
 		return getASTTranslationUnit(FileContent.adapt(reader), scanInfo,
 				IncludeFileContentProvider.adapt(codeReaderFactory), index, options, log);
 	}

 	@Override
 	public IASTTranslationUnit getASTTranslationUnit(FileContent reader, IScannerInfo scanInfo,
 			IncludeFileContentProvider fileCreator, IIndex index, int options, IParserLogService log)
 			throws CoreException {
 		final IScanner scanner = createScanner(reader, scanInfo, fileCreator, log);
 		scanner.setComputeImageLocations((options & OPTION_NO_IMAGE_LOCATIONS) == 0);
 		scanner.setProcessInactiveCode((options & OPTION_PARSE_INACTIVE_CODE) != 0);

 		IParserSettings parserSettings = null;
 		if (scanInfo instanceof ExtendedScannerInfo) {
 			ExtendedScannerInfo extendedScannerInfo = (ExtendedScannerInfo) scanInfo;
 			parserSettings = extendedScannerInfo.getParserSettings();
 		}
 		final ISourceCodeParser parser = createParser(scanner, log, index, false, options, parserSettings);

 		// Make it possible to cancel parser by reconciler - http://bugs.eclipse.org/226682
 		ICanceler canceler = null;
 		if (log instanceof ICanceler) {
 			canceler = (ICanceler) log;
 			canceler.setCancelable(new ICancelable() {
 				@Override
 				public void cancel() {
 					scanner.cancel();
 					parser.cancel();
 				}
 			});
 		}

 		try {
 			// Parse
 			return parser.parse();
 		} catch (ParseError e) {
 			// Only the TOO_MANY_TOKENS error can be handled here.
 			if (e.getErrorKind() != ParseErrorKind.TOO_MANY_TOKENS)
 				throw e;

 			// Otherwise generate a log because parsing was stopped because of a user preference.
 			if (log != null) {
 				String tuName = null;
 				if (scanner.getLocationResolver() != null)
 					tuName = scanner.getLocationResolver().getTranslationUnitPath();

 				log.traceLog(e.getMessage() + (tuName == null ? "" : (" while parsing " + tuName))); //$NON-NLS-1$ //$NON-NLS-2$
 			}
 			return null;
 		} finally {
 			if (canceler != null) {
 				canceler.setCancelable(null);
 			}
 		}
 	}

 	@Deprecated
 	@Override
 	public IASTCompletionNode getCompletionNode(org.eclipse.cdt.core.parser.CodeReader reader, IScannerInfo scanInfo,
 			org.eclipse.cdt.core.dom.ICodeReaderFactory fileCreator, IIndex index, IParserLogService log, int offset)
 			throws CoreException {
 		return getCompletionNode(FileContent.adapt(reader), scanInfo, IncludeFileContentProvider.adapt(fileCreator),
 				index, log, offset);
 	}

 	@Override
 	public IASTCompletionNode getCompletionNode(FileContent reader, IScannerInfo scanInfo,
 			IncludeFileContentProvider fileCreator, IIndex index, IParserLogService log, int offset)
 			throws CoreException {
 		IScanner scanner = createScanner(reader, scanInfo, fileCreator, log);
 		scanner.setContentAssistMode(offset);

 		ISourceCodeParser parser = createParser(scanner, log, index, true, 0);

 		// Run the parse and return the completion node
 		parser.parse();
 		IASTCompletionNode node = parser.getCompletionNode();
 		return node;
 	}

 	/**
 	 * Creates the parser.
 	 *
 	 * @param scanner  the IScanner to get tokens from
 	 * @param log  the parser log service
 	 * @param index  the index to help resolve bindings
 	 * @param forCompletion  whether the parser is used for code completion
 	 * @param options for valid options see
 	 *     {@link AbstractLanguage#getASTTranslationUnit(FileContent, IScannerInfo, IncludeFileContentProvider, IIndex, int, IParserLogService)}
 	 * @return  an instance of ISourceCodeParser
 	 */
 	protected ISourceCodeParser createParser(IScanner scanner, IParserLogService log, IIndex index,
 			boolean forCompletion, int options) {
 		ParserMode mode = createParserMode(forCompletion, options);
 		return createParser(scanner, mode, log, index);
 	}

 	/**
 	 * Create the parser with additional settings.
 	 *
 	 * @param scanner  the IScanner to get tokens from
 	 * @param log  the parser log service
 	 * @param index  the index to help resolve bindings
 	 * @param forCompletion  whether the parser is used for code completion
 	 * @param options for valid options see
 	 *     {@link AbstractLanguage#getASTTranslationUnit(FileContent, IScannerInfo, IncludeFileContentProvider, IIndex, int, IParserLogService)}
 	 * @param settings for the parser
 	 * @return  an instance of ISourceCodeParser
 	 * @since 5.6
 	 */
 	protected ISourceCodeParser createParser(IScanner scanner, IParserLogService log, IIndex index,
 			boolean forCompletion, int options, IParserSettings settings) {
 		ParserMode mode = createParserMode(forCompletion, options);
 		return createParser(scanner, mode, log, index, options, settings);
 	}

 	private ParserMode createParserMode(boolean forCompletion, int options) {
 		if (forCompletion) {
 			return ParserMode.COMPLETION_PARSE;
 		} else if ((options & OPTION_SKIP_FUNCTION_BODIES) != 0) {
 			return ParserMode.STRUCTURAL_PARSE;
 		} else {
 			return ParserMode.COMPLETE_PARSE;
 		}
 	}

 	/**
 	 * @deprecated Replaced by
 	 *             {@link #createScanner(FileContent, IScannerInfo, IncludeFileContentProvider, IParserLogService)}
 	 */
 	@Deprecated
 	protected IScanner createScanner(org.eclipse.cdt.core.parser.CodeReader reader, IScannerInfo scanInfo,
 			org.eclipse.cdt.core.dom.ICodeReaderFactory fileCreator, IParserLogService log) {
 		return createScanner(FileContent.adapt(reader), scanInfo, IncludeFileContentProvider.adapt(fileCreator), log);
 	}

 	/**
 	 * Create the scanner to be used with the parser.
 	 * @since 5.2
 	 */
 	protected IScanner createScanner(FileContent content, IScannerInfo scanInfo, IncludeFileContentProvider fcp,
 			IParserLogService log) {
 		return new CPreprocessor(content, scanInfo, getParserLanguage(), log,
 				getScannerExtensionConfiguration(scanInfo), fcp);
 	}

 	@Override
 	@Deprecated
 	public IASTName[] getSelectedNames(IASTTranslationUnit ast, int start, int length) {
 		IASTNode selectedNode = ast.getNodeSelector(null).findNode(start, length);

 		if (selectedNode == null)
 			return new IASTName[0];

 		if (selectedNode instanceof IASTName)
 			return new IASTName[] { (IASTName) selectedNode };

 		if (selectedNode instanceof IASTPreprocessorMacroExpansion) {
 			return new IASTName[] { ((IASTPreprocessorMacroExpansion) selectedNode).getMacroReference() };
 		}

 		NameCollector collector = new NameCollector();
 		selectedNode.accept(collector);
 		return collector.getNames();
 	}

 	@Override
 	public IContributedModelBuilder createModelBuilder(ITranslationUnit tu) {
 		// Use default model builder.
 		return null;
 	}

 	private ICLanguageKeywords cLanguageKeywords;

 	private synchronized ICLanguageKeywords getCLanguageKeywords() {
 		if (cLanguageKeywords == null) {
 			cLanguageKeywords = new CLanguageKeywords(getParserLanguage(),
 					getScannerExtensionConfiguration(new ExtendedScannerInfo()));
 		}
 		return cLanguageKeywords;
 	}

 	@Override
 	@SuppressWarnings("unchecked")
 	public <T> T getAdapter(Class<T> adapter) {
 		if (adapter.isAssignableFrom(ICLanguageKeywords.class))
 			return (T) getCLanguageKeywords();

 		return super.getAdapter(adapter);
 	}

 	// For backwards compatibility
 	@Override
 	public String[] getBuiltinTypes() {
 		return getCLanguageKeywords().getBuiltinTypes();
 	}

 	@Override
 	public String[] getKeywords() {
 		return getCLanguageKeywords().getKeywords();
 	}

 	@Override
 	public String[] getPreprocessorKeywords() {
 		return getCLanguageKeywords().getPreprocessorKeywords();
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2007, 2015 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:
	* Anton Leherbauer (Wind River Systems) - initial API and implementation
	* Markus Schorn (Wind River Systems)
	* Mike Kucera (IBM)
	* Sergey Prigogin (Google)
	* Thomas Corbat (IFS)
	*******************************************************************************/
	package org.eclipse.cdt.core.dom.parser;

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

	import org.eclipse.cdt.core.dom.ast.ASTVisitor;
	import org.eclipse.cdt.core.dom.ast.IASTCompletionNode;
	import org.eclipse.cdt.core.dom.ast.IASTName;
	import org.eclipse.cdt.core.dom.ast.IASTNode;
	import org.eclipse.cdt.core.dom.ast.IASTPreprocessorMacroExpansion;
	import org.eclipse.cdt.core.dom.ast.IASTTranslationUnit;
	import org.eclipse.cdt.core.index.IIndex;
	import org.eclipse.cdt.core.model.AbstractLanguage;
	import org.eclipse.cdt.core.model.ICLanguageKeywords;
	import org.eclipse.cdt.core.model.IContributedModelBuilder;
	import org.eclipse.cdt.core.model.ITranslationUnit;
	import org.eclipse.cdt.core.parser.ExtendedScannerInfo;
	import org.eclipse.cdt.core.parser.FileContent;
	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.IncludeFileContentProvider;
	import org.eclipse.cdt.core.parser.ParseError;
	import org.eclipse.cdt.core.parser.ParseError.ParseErrorKind;
	import org.eclipse.cdt.core.parser.ParserLanguage;
	import org.eclipse.cdt.core.parser.ParserMode;
	import org.eclipse.cdt.internal.core.parser.scanner.CPreprocessor;
	import org.eclipse.cdt.internal.core.util.ICancelable;
	import org.eclipse.cdt.internal.core.util.ICanceler;
	import org.eclipse.core.runtime.CoreException;

	/**
	* This class provides a skeletal implementation of the ILanguage interface
	* for the DOM parser framework.
	*
	* This class uses the template method pattern, derived classes need only implement
	* {@link AbstractCLikeLanguage#getScannerExtensionConfiguration(IScannerInfo info)},
	* {@link AbstractCLikeLanguage#getParserLanguage()} and
	* {@link AbstractCLikeLanguage#createParser(IScanner scanner, ParserMode parserMode,
	* IParserLogService logService, IIndex index)}.
	*
	* @see AbstractScannerExtensionConfiguration
	*
	* @since 5.0
	*/
	public abstract class AbstractCLikeLanguage extends AbstractLanguage implements ICLanguageKeywords {
	private static final AbstractScannerExtensionConfiguration DUMMY_SCANNER_EXTENSION_CONFIGURATION = new AbstractScannerExtensionConfiguration() {
	};

	static class NameCollector extends ASTVisitor {
	{
	shouldVisitNames = true;
	}

	private List<IASTName> nameList = new ArrayList<>();

	@Override
	public int visit(IASTName name) {
	nameList.add(name);
	return PROCESS_CONTINUE;
	}

	public IASTName[] getNames() {
	return nameList.toArray(new IASTName[nameList.size()]);
	}
	}

	/**
	* @nooverride This method is not intended to be re-implemented or extended by clients.
	* @deprecated Do not override this method.
	* Override {@link #getScannerExtensionConfiguration(IScannerInfo)} instead.
	*/
	@Deprecated
	protected IScannerExtensionConfiguration getScannerExtensionConfiguration() {
	return DUMMY_SCANNER_EXTENSION_CONFIGURATION;
	}

	/**
	* @return the scanner extension configuration for this language. May not return {@code null}.
	* @since 5.4
	*/
	protected IScannerExtensionConfiguration getScannerExtensionConfiguration(IScannerInfo info) {
	return getScannerExtensionConfiguration();
	}

	/**
	* @return the actual parser object.
	*/
	protected abstract ISourceCodeParser createParser(IScanner scanner, ParserMode parserMode,
	IParserLogService logService, IIndex index);

	/**
	* @return the actual parser object, configured with additional settings.
	* @since 5.6
	*/
	protected ISourceCodeParser createParser(IScanner scanner, ParserMode parserMode, IParserLogService logService,
	IIndex index, int options, IParserSettings settings) {
	return createParser(scanner, parserMode, logService, index);
	}

	/**
	* @return The ParserLanguage value corresponding to the language supported.
	*/
	protected abstract ParserLanguage getParserLanguage();

	@Deprecated
	@Override
	public IASTTranslationUnit getASTTranslationUnit(org.eclipse.cdt.core.parser.CodeReader reader,
	IScannerInfo scanInfo, org.eclipse.cdt.core.dom.ICodeReaderFactory fileCreator, IIndex index,
	IParserLogService log) throws CoreException {
	return getASTTranslationUnit(reader, scanInfo, fileCreator, index, 0, log);
	}

	@Deprecated
	@Override
	public IASTTranslationUnit getASTTranslationUnit(org.eclipse.cdt.core.parser.CodeReader reader,
	IScannerInfo scanInfo, org.eclipse.cdt.core.dom.ICodeReaderFactory codeReaderFactory, IIndex index,
	int options, IParserLogService log) throws CoreException {
	return getASTTranslationUnit(FileContent.adapt(reader), scanInfo,
	IncludeFileContentProvider.adapt(codeReaderFactory), index, options, log);
	}

	@Override
	public IASTTranslationUnit getASTTranslationUnit(FileContent reader, IScannerInfo scanInfo,
	IncludeFileContentProvider fileCreator, IIndex index, int options, IParserLogService log)
	throws CoreException {
	final IScanner scanner = createScanner(reader, scanInfo, fileCreator, log);
	scanner.setComputeImageLocations((options & OPTION_NO_IMAGE_LOCATIONS) == 0);
	scanner.setProcessInactiveCode((options & OPTION_PARSE_INACTIVE_CODE) != 0);

	IParserSettings parserSettings = null;
	if (scanInfo instanceof ExtendedScannerInfo) {
	ExtendedScannerInfo extendedScannerInfo = (ExtendedScannerInfo) scanInfo;
	parserSettings = extendedScannerInfo.getParserSettings();
	}
	final ISourceCodeParser parser = createParser(scanner, log, index, false, options, parserSettings);

	// Make it possible to cancel parser by reconciler - http://bugs.eclipse.org/226682
	ICanceler canceler = null;
	if (log instanceof ICanceler) {
	canceler = (ICanceler) log;
	canceler.setCancelable(new ICancelable() {
	@Override
	public void cancel() {
	scanner.cancel();
	parser.cancel();
	}
	});
	}

	try {
	// Parse
	return parser.parse();
	} catch (ParseError e) {
	// Only the TOO_MANY_TOKENS error can be handled here.
	if (e.getErrorKind() != ParseErrorKind.TOO_MANY_TOKENS)
	throw e;

	// Otherwise generate a log because parsing was stopped because of a user preference.
	if (log != null) {
	String tuName = null;
	if (scanner.getLocationResolver() != null)
	tuName = scanner.getLocationResolver().getTranslationUnitPath();

	log.traceLog(e.getMessage() + (tuName == null ? "" : (" while parsing " + tuName))); //$NON-NLS-1$ //$NON-NLS-2$
	}
	return null;
	} finally {
	if (canceler != null) {
	canceler.setCancelable(null);
	}
	}
	}

	@Deprecated
	@Override
	public IASTCompletionNode getCompletionNode(org.eclipse.cdt.core.parser.CodeReader reader, IScannerInfo scanInfo,
	org.eclipse.cdt.core.dom.ICodeReaderFactory fileCreator, IIndex index, IParserLogService log, int offset)
	throws CoreException {
	return getCompletionNode(FileContent.adapt(reader), scanInfo, IncludeFileContentProvider.adapt(fileCreator),
	index, log, offset);
	}

	@Override
	public IASTCompletionNode getCompletionNode(FileContent reader, IScannerInfo scanInfo,
	IncludeFileContentProvider fileCreator, IIndex index, IParserLogService log, int offset)
	throws CoreException {
	IScanner scanner = createScanner(reader, scanInfo, fileCreator, log);
	scanner.setContentAssistMode(offset);

	ISourceCodeParser parser = createParser(scanner, log, index, true, 0);

	// Run the parse and return the completion node
	parser.parse();
	IASTCompletionNode node = parser.getCompletionNode();
	return node;
	}

	/**
	* Creates the parser.
	*
	* @param scanner the IScanner to get tokens from
	* @param log the parser log service
	* @param index the index to help resolve bindings
	* @param forCompletion whether the parser is used for code completion
	* @param options for valid options see
	* {@link AbstractLanguage#getASTTranslationUnit(FileContent, IScannerInfo, IncludeFileContentProvider, IIndex, int, IParserLogService)}
	* @return an instance of ISourceCodeParser
	*/
	protected ISourceCodeParser createParser(IScanner scanner, IParserLogService log, IIndex index,
	boolean forCompletion, int options) {
	ParserMode mode = createParserMode(forCompletion, options);
	return createParser(scanner, mode, log, index);
	}

	/**
	* Create the parser with additional settings.
	*
	* @param scanner the IScanner to get tokens from
	* @param log the parser log service
	* @param index the index to help resolve bindings
	* @param forCompletion whether the parser is used for code completion
	* @param options for valid options see
	* {@link AbstractLanguage#getASTTranslationUnit(FileContent, IScannerInfo, IncludeFileContentProvider, IIndex, int, IParserLogService)}
	* @param settings for the parser
	* @return an instance of ISourceCodeParser
	* @since 5.6
	*/
	protected ISourceCodeParser createParser(IScanner scanner, IParserLogService log, IIndex index,
	boolean forCompletion, int options, IParserSettings settings) {
	ParserMode mode = createParserMode(forCompletion, options);
	return createParser(scanner, mode, log, index, options, settings);
	}

	private ParserMode createParserMode(boolean forCompletion, int options) {
	if (forCompletion) {
	return ParserMode.COMPLETION_PARSE;
	} else if ((options & OPTION_SKIP_FUNCTION_BODIES) != 0) {
	return ParserMode.STRUCTURAL_PARSE;
	} else {
	return ParserMode.COMPLETE_PARSE;
	}
	}

	/**
	* @deprecated Replaced by
	* {@link #createScanner(FileContent, IScannerInfo, IncludeFileContentProvider, IParserLogService)}
	*/
	@Deprecated
	protected IScanner createScanner(org.eclipse.cdt.core.parser.CodeReader reader, IScannerInfo scanInfo,
	org.eclipse.cdt.core.dom.ICodeReaderFactory fileCreator, IParserLogService log) {
	return createScanner(FileContent.adapt(reader), scanInfo, IncludeFileContentProvider.adapt(fileCreator), log);
	}

	/**
	* Create the scanner to be used with the parser.
	* @since 5.2
	*/
	protected IScanner createScanner(FileContent content, IScannerInfo scanInfo, IncludeFileContentProvider fcp,
	IParserLogService log) {
	return new CPreprocessor(content, scanInfo, getParserLanguage(), log,
	getScannerExtensionConfiguration(scanInfo), fcp);
	}

	@Override
	@Deprecated
	public IASTName[] getSelectedNames(IASTTranslationUnit ast, int start, int length) {
	IASTNode selectedNode = ast.getNodeSelector(null).findNode(start, length);

	if (selectedNode == null)
	return new IASTName[0];

	if (selectedNode instanceof IASTName)
	return new IASTName[] { (IASTName) selectedNode };

	if (selectedNode instanceof IASTPreprocessorMacroExpansion) {
	return new IASTName[] { ((IASTPreprocessorMacroExpansion) selectedNode).getMacroReference() };
	}

	NameCollector collector = new NameCollector();
	selectedNode.accept(collector);
	return collector.getNames();
	}

	@Override
	public IContributedModelBuilder createModelBuilder(ITranslationUnit tu) {
	// Use default model builder.
	return null;
	}

	private ICLanguageKeywords cLanguageKeywords;

	private synchronized ICLanguageKeywords getCLanguageKeywords() {
	if (cLanguageKeywords == null) {
	cLanguageKeywords = new CLanguageKeywords(getParserLanguage(),
	getScannerExtensionConfiguration(new ExtendedScannerInfo()));
	}
	return cLanguageKeywords;
	}

	@Override
	@SuppressWarnings("unchecked")
	public <T> T getAdapter(Class<T> adapter) {
	if (adapter.isAssignableFrom(ICLanguageKeywords.class))
	return (T) getCLanguageKeywords();

	return super.getAdapter(adapter);
	}

	// For backwards compatibility
	@Override
	public String[] getBuiltinTypes() {
	return getCLanguageKeywords().getBuiltinTypes();
	}

	@Override
	public String[] getKeywords() {
	return getCLanguageKeywords().getKeywords();
	}

	@Override
	public String[] getPreprocessorKeywords() {
	return getCLanguageKeywords().getPreprocessorKeywords();
	}
	}