| /******************************************************************************* |
| * Copyright (c) 2000, 2014 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 |
| * Markus Schorn (Wind River Systems) |
| *******************************************************************************/ |
| package org.eclipse.cdt.internal.core.parser.util; |
| |
| import static org.junit.Assert.fail; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.eclipse.cdt.core.CCorePlugin; |
| import org.eclipse.cdt.core.dom.IName; |
| import org.eclipse.cdt.core.dom.ast.ASTVisitor; |
| import org.eclipse.cdt.core.dom.ast.DOMException; |
| import org.eclipse.cdt.core.dom.ast.IASTName; |
| import org.eclipse.cdt.core.dom.ast.IASTTranslationUnit; |
| import org.eclipse.cdt.core.dom.ast.IBinding; |
| import org.eclipse.cdt.core.dom.ast.cpp.ICPPClassScope; |
| import org.eclipse.cdt.core.dom.ast.cpp.ICPPConstructor; |
| import org.eclipse.cdt.core.dom.ast.cpp.ICPPMethod; |
| import org.eclipse.cdt.core.index.IIndexBinding; |
| import org.eclipse.cdt.core.parser.ParserLanguage; |
| import org.eclipse.cdt.core.parser.util.ArrayUtil; |
| import org.eclipse.core.resources.IFile; |
| import org.eclipse.core.resources.IProject; |
| import org.eclipse.core.runtime.IPath; |
| import org.eclipse.core.runtime.content.IContentType; |
| |
| /** |
| * Utility class to have commonly used algorithms in one place for searching with the DOM. |
| * |
| * @author dsteffle |
| */ |
| public class DOMSearchUtil { |
| public static final int DECLARATIONS = 1; |
| public static final int DEFINITIONS = 2; |
| public static final int DECLARATIONS_DEFINITIONS = 3; |
| public static final int REFERENCES = 4; |
| public static final int ALL_OCCURRENCES = 5; |
| |
| /** |
| * Retrieves the ParserLanguage from an IFile. |
| */ |
| public static ParserLanguage getLanguageFromFile(IFile file) { |
| IProject project = file.getProject(); |
| IContentType contentType = CCorePlugin.getContentType(project, file.getFullPath().lastSegment()); |
| if (contentType != null) { |
| String lid = contentType.getId(); |
| if (CCorePlugin.CONTENT_TYPE_CXXSOURCE.equals(lid) || CCorePlugin.CONTENT_TYPE_CXXHEADER.equals(lid)) { |
| return ParserLanguage.CPP; |
| } |
| } |
| return ParserLanguage.C; |
| } |
| |
| /** |
| * The NameCollector used to get IASTNames from an IASTNode. |
| */ |
| static public class NameCollector extends ASTVisitor { |
| { |
| shouldVisitNames = true; |
| } |
| public List<IASTName> nameList = new ArrayList<>(); |
| |
| @Override |
| public int visit(IASTName name) { |
| nameList.add(name); |
| return PROCESS_CONTINUE; |
| } |
| |
| public IASTName getName(int idx) { |
| if (idx < 0 || idx >= nameList.size()) |
| return null; |
| return nameList.get(idx); |
| } |
| |
| public int size() { |
| return nameList.size(); |
| } |
| } |
| |
| /** |
| * Returns the ParserLanguage corresponding to the IPath and IProject. |
| * Returns ParserLanguage.CPP if the file type is a header. |
| */ |
| public static ParserLanguage getLanguage(IPath path, IProject project) { |
| //FIXME: ALAIN, for headers should we assume CPP ?? |
| // The problem is that it really depends on how the header was included. |
| String id = null; |
| IContentType contentType = CCorePlugin.getContentType(project, path.lastSegment()); |
| if (contentType != null) { |
| id = contentType.getId(); |
| } |
| if (id != null) { |
| if (CCorePlugin.CONTENT_TYPE_CXXHEADER.equals(id)) { |
| return ParserLanguage.CPP; |
| } else if (CCorePlugin.CONTENT_TYPE_CXXSOURCE.equals(id)) { |
| return ParserLanguage.CPP; |
| } else if (CCorePlugin.CONTENT_TYPE_CHEADER.equals(id)) { |
| return ParserLanguage.C; |
| } else if (CCorePlugin.CONTENT_TYPE_CSOURCE.equals(id)) { |
| return ParserLanguage.C; |
| } else if (CCorePlugin.CONTENT_TYPE_ASMSOURCE.equals(id)) { |
| // ??? |
| // What do we do here ? |
| } |
| } |
| return ParserLanguage.CPP; |
| } |
| |
| /** |
| * This is used to get the names from the TU that the IASTName searchName belongs to. |
| * |
| * @param searchName the IASTName whose references/declarations are to be retrieved |
| * @param limitTo used to specify whether to get declarations, references, or both, one of: |
| * ( CSearchPattern.DECLARATION | CSearchPattern.REFERENCES | CSearchPattern.ALL_OCCURRENCES ) |
| * @return IASTName[] declarations, references, or both depending on limitTo that correspond to the IASTName searchName searched for |
| */ |
| public static IName[] getNamesFromDOM(IASTName searchName, int limitTo) { |
| IName[] names = null; |
| IASTTranslationUnit tu = searchName.getTranslationUnit(); |
| |
| if (tu == null) { |
| return IASTName.EMPTY_NAME_ARRAY; |
| } |
| |
| IBinding binding = searchName.resolveBinding(); |
| if (binding instanceof IIndexBinding) { |
| fail("Not implemented"); |
| // try { |
| // ArrayList pdomNames = new ArrayList(); |
| // IPDOMResolver pdom= ((PDOMBinding) binding).getPDOM(); |
| // // First decls |
| // names= pdom.getDeclarations(binding); |
| // pdomNames.addAll(Arrays.asList(names)); |
| // // Next defs |
| // names= pdom.getDefinitions(binding); |
| // pdomNames.addAll(Arrays.asList(names)); |
| // names = (IName[])pdomNames.toArray(new IName[pdomNames.size()]); |
| // } catch (CoreException e) { |
| // CCorePlugin.log(e); |
| // } |
| } else { |
| names = getNames(tu, binding, limitTo); |
| |
| if (names == null || names.length == 0) { // try alternate strategies |
| try { |
| // fix for 86829, 95224 |
| if ((binding instanceof ICPPConstructor |
| || (binding instanceof ICPPMethod && ((ICPPMethod) binding).isDestructor())) |
| && binding.getScope() instanceof ICPPClassScope) { |
| binding = ((ICPPClassScope) binding.getScope()).getClassType(); |
| names = getNames(tu, binding, limitTo); |
| } |
| } catch (DOMException e) { |
| } |
| } |
| } |
| |
| return names; |
| } |
| |
| private static IASTName[] getNames(IASTTranslationUnit tu, IBinding binding, int limitTo) { |
| IASTName[] names = null; |
| if (limitTo == DECLARATIONS || limitTo == DECLARATIONS_DEFINITIONS) { |
| names = tu.getDeclarationsInAST(binding); |
| } else if (limitTo == REFERENCES) { |
| names = tu.getReferences(binding); |
| } else if (limitTo == DEFINITIONS) { |
| names = tu.getDefinitionsInAST(binding); |
| } else if (limitTo == ALL_OCCURRENCES) { |
| names = tu.getDeclarationsInAST(binding); |
| names = ArrayUtil.addAll(IASTName.class, names, tu.getReferences(binding)); |
| } else { // assume ALL |
| names = tu.getDeclarationsInAST(binding); |
| names = ArrayUtil.addAll(IASTName.class, names, tu.getReferences(binding)); |
| } |
| |
| return names; |
| } |
| } |