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/*******************************************************************************
* Copyright (c) 2008 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
*******************************************************************************/
package org.eclipse.cdt.internal.ui.refactoring.utils;
import org.eclipse.core.runtime.Path;
import org.eclipse.cdt.core.dom.ast.IASTCompositeTypeSpecifier;
import org.eclipse.cdt.core.dom.ast.IASTCompoundStatement;
import org.eclipse.cdt.core.dom.ast.IASTDeclaration;
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.ICPPASTQualifiedName;
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.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 new IASTDeclaration[0];
}
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 IASTSimpleDeclaration findSimpleDeclarationInParents(IASTNode node) {
while(node != null){
if (node instanceof IASTSimpleDeclaration) {
return (IASTSimpleDeclaration) node;
}
node = node.getParent();
}
return null;
}
public static MethodContext findMethodContext(IASTNode node) {
IASTTranslationUnit translationUnit = node.getTranslationUnit();
boolean found = false;
MethodContext context = new MethodContext();
context.setType(MethodContext.ContextType.NONE);
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=((IASTFunctionDefinition)node).getDeclarator().getName();
found = true;
context.setType(MethodContext.ContextType.FUNCTION);
}
}
if(name instanceof ICPPASTQualifiedName){
ICPPASTQualifiedName qname =( ICPPASTQualifiedName )name;
context.setMethodQName(qname);
IBinding bind = qname.resolveBinding();
IASTName[] decl = translationUnit.getDeclarationsInAST(bind);//TODO HSR works only for names in the current translationUnit
for (IASTName tmpname : decl) {
IASTNode methoddefinition = tmpname.getParent().getParent();
if (methoddefinition instanceof IASTSimpleDeclaration) {
context.setMethodDeclarationName(tmpname);
context.setType(MethodContext.ContextType.METHOD);
}
}
}
return context;
}
public static IASTCompoundStatement findCompoundStatementInAncestors(IASTNode node) {
while(node != null){
if (node instanceof IASTCompoundStatement) {
return (IASTCompoundStatement) node;
}
node = node.getParent();
}
return null;
}
public static IASTCompositeTypeSpecifier findClassInAncestors(IASTNode node) {
while(!(node instanceof IASTCompositeTypeSpecifier)){
if(node instanceof IASTTranslationUnit) {
return null;
}
node = node.getParent();
}
return (IASTCompositeTypeSpecifier) node;
}
public static IASTFunctionDefinition findFunctionDefinitionInAncestors(IASTNode node) {
while(node != null){
if (node instanceof IASTFunctionDefinition) {
return (IASTFunctionDefinition) node;
}
node = node.getParent();
}
return null;
}
}
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