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/*******************************************************************************
* Copyright (c) 2008, 2012 Institute for Software, HSR Hochschule fuer Technik
* Rapperswil, University of applied sciences 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:
* Institute for Software - initial API and implementation
* Sergey Prigogin (Google)
*******************************************************************************/
package org.eclipse.cdt.internal.ui.refactoring.utils;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.Path;
import org.eclipse.cdt.core.dom.ast.IASTDeclSpecifier;
import org.eclipse.cdt.core.dom.ast.IASTDeclaration;
import org.eclipse.cdt.core.dom.ast.IASTDeclarator;
import org.eclipse.cdt.core.dom.ast.IASTFunctionDeclarator;
import org.eclipse.cdt.core.dom.ast.IASTFunctionDefinition;
import org.eclipse.cdt.core.dom.ast.IASTName;
import org.eclipse.cdt.core.dom.ast.IASTNode;
import org.eclipse.cdt.core.dom.ast.IASTSimpleDeclaration;
import org.eclipse.cdt.core.dom.ast.IASTTranslationUnit;
import org.eclipse.cdt.core.dom.ast.IBinding;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTCompositeTypeSpecifier;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTDeclSpecifier;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTFunctionDeclarator;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTQualifiedName;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTTemplateDeclaration;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPMethod;
import org.eclipse.cdt.internal.core.dom.parser.cpp.CPPASTNamespaceDefinition;
import org.eclipse.cdt.internal.core.dom.parser.cpp.CPPASTTranslationUnit;
import org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.CPPVisitor;
import org.eclipse.cdt.internal.ui.refactoring.CRefactoringContext;
import org.eclipse.cdt.internal.ui.refactoring.MethodContext;
/**
* General class for common Node operations.
*
* @author Lukas Felber & Guido Zgraggen
*/
public class NodeHelper {
public static IASTDeclaration[] getDeclarations(IASTNode parent) {
if (parent instanceof ICPPASTCompositeTypeSpecifier) {
return ((ICPPASTCompositeTypeSpecifier) parent).getMembers();
} else if (parent instanceof CPPASTTranslationUnit) {
return ((CPPASTTranslationUnit) parent).getDeclarations();
} else if (parent instanceof CPPASTNamespaceDefinition) {
return ((CPPASTNamespaceDefinition) parent).getDeclarations();
}
return IASTDeclaration.EMPTY_DECLARATION_ARRAY;
}
public static IASTNode findFollowingNode(IASTNode currentNode) {
if (currentNode == null || currentNode.getParent() == null) {
return null;
}
boolean match = false;
for (IASTNode actNode : getDeclarations(currentNode.getParent())) {
if (match) {
return actNode;
}
if (actNode.equals(currentNode)) {
match = true;
}
}
return null;
}
public static IASTNode findTopLevelParent(IASTNode currentNode) {
while (currentNode != null && currentNode.getParent() != null && currentNode.getParent().getParent() != null) {
return findTopLevelParent(currentNode.getParent());
}
return currentNode;
}
public static boolean isSameNode(IASTNode node1, IASTNode node2) {
if (node1 == null || node2 == null) {
return false;
}
return node1.getNodeLocations()[0].getNodeOffset() == node2.getNodeLocations()[0].getNodeOffset()
&& node1.getNodeLocations()[0].getNodeLength() == node2.getNodeLocations()[0].getNodeLength()
&& new Path(node1.getFileLocation().getFileName()).equals(new Path(node2.getFileLocation().getFileName()));
}
public static MethodContext findMethodContext(IASTNode node, CRefactoringContext refactoringContext,
IProgressMonitor pm) throws CoreException {
IASTTranslationUnit translationUnit = node.getTranslationUnit();
boolean found = false;
MethodContext context = new MethodContext();
IASTName name = null;
while (node != null && !found) {
node = node.getParent();
if (node instanceof IASTFunctionDeclarator) {
name = ((IASTFunctionDeclarator) node).getName();
found = true;
context.setType(MethodContext.ContextType.FUNCTION);
} else if (node instanceof IASTFunctionDefinition) {
name = CPPVisitor.findInnermostDeclarator(((IASTFunctionDefinition) node).getDeclarator()).getName();
found = true;
context.setType(MethodContext.ContextType.FUNCTION);
}
}
getMethodContexWithIndex(refactoringContext, translationUnit, name, context, pm);
return context;
}
private static void getMethodContexWithIndex(CRefactoringContext refactoringContext,
IASTTranslationUnit ast, IASTName name, MethodContext context, IProgressMonitor pm)
throws CoreException {
if (name instanceof ICPPASTQualifiedName) {
ICPPASTQualifiedName qname = (ICPPASTQualifiedName) name;
context.setMethodQName(qname);
}
IBinding binding = name.resolveBinding();
if (binding instanceof ICPPMethod) {
context.setType(MethodContext.ContextType.METHOD);
IASTName declName = DefinitionFinder.getMemberDeclaration(name, refactoringContext, pm);
context.setMethodDeclarationName(declName);
}
}
public static boolean isMethodDeclaration(IASTSimpleDeclaration simpleDeclaration) {
if (simpleDeclaration == null) {
return false;
}
final IASTDeclSpecifier declSpecifier = simpleDeclaration.getDeclSpecifier();
final IASTDeclarator[] declarators = simpleDeclaration.getDeclarators();
if ((declSpecifier instanceof ICPPASTDeclSpecifier)
&& ((ICPPASTDeclSpecifier) declSpecifier).isFriend()) {
return false;
}
return declarators.length == 1 && declarators[0] instanceof ICPPASTFunctionDeclarator;
}
public static boolean isContainedInTemplateDeclaration(IASTNode node) {
return CPPVisitor.findAncestorWithType(node, ICPPASTTemplateDeclaration.class) != null;
}
}
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