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/*******************************************************************************
* Copyright (c) 2008, 2009 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.resources.IFile;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.cdt.core.dom.ast.IASTDeclSpecifier;
import org.eclipse.cdt.core.dom.ast.IASTName;
import org.eclipse.cdt.core.dom.ast.IASTNode;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTCompositeTypeSpecifier;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTNamespaceDefinition;
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.ICPPASTTemplateParameter;
import org.eclipse.cdt.internal.core.dom.parser.cpp.CPPASTNamedTypeSpecifier;
import org.eclipse.cdt.internal.core.dom.parser.cpp.CPPASTQualifiedName;
import org.eclipse.cdt.internal.core.dom.parser.cpp.CPPASTSimpleTypeTemplateParameter;
import org.eclipse.cdt.internal.core.dom.parser.cpp.CPPASTTemplateId;
import org.eclipse.cdt.internal.core.dom.parser.cpp.CPPASTTypeId;
/**
* Helper class to find Namespace informations.
* @author Mirko Stocker
*
*/
public class NamespaceHelper {
/**
* Returns the qualified name of all namespaces that are defined at the specified file and offset.
*
* @param insertFile
* @param offset
* @return ICPPASTQualifiedName with the names of all namespaces
* @throws CoreException
*/
public static ICPPASTQualifiedName getSurroundingNamespace(final IFile insertFile, final int offset) throws CoreException {
final CPPASTQualifiedName qualifiedName = new CPPASTQualifiedName();
TranslationUnitHelper.loadTranslationUnit(insertFile, false).accept(new CPPASTAllVisitor() {
@Override
public int visit(IASTDeclSpecifier declSpec) {
if (declSpec instanceof ICPPASTCompositeTypeSpecifier && checkFileNameAndLocation(insertFile, offset, declSpec)) {
qualifiedName.addName(createNameWithTemplates(declSpec));
}
return super.visit(declSpec);
}
@Override
public int visit(ICPPASTNamespaceDefinition namespace) {
if (checkFileNameAndLocation(insertFile, offset, namespace)) {
qualifiedName.addName((namespace).getName().copy());
}
return super.visit(namespace);
}
});
return qualifiedName;
}
private static boolean checkFileNameAndLocation(final IFile insertFile, final int offset, IASTNode namespace) {
return namespace.getFileLocation().getFileName().endsWith(insertFile.getFullPath().toOSString())
&& offset >= namespace.getNodeLocations()[0].getNodeOffset()
&& offset < namespace.getNodeLocations()[0].getNodeOffset() + namespace.getNodeLocations()[0].getNodeLength();
}
private static IASTName createNameWithTemplates(IASTNode declarationParent) {
IASTName parentName;
parentName = ((ICPPASTCompositeTypeSpecifier) declarationParent).getName().copy();
if(classHasTemplates(declarationParent)) {
CPPASTTemplateId templateId = new CPPASTTemplateId();
templateId.setTemplateName(parentName);
for(ICPPASTTemplateParameter templateParameter : ((ICPPASTTemplateDeclaration) declarationParent.getParent().getParent() ).getTemplateParameters()) {
if (templateParameter instanceof CPPASTSimpleTypeTemplateParameter) {
CPPASTSimpleTypeTemplateParameter simpleTypeTemplateParameter = (CPPASTSimpleTypeTemplateParameter) templateParameter;
CPPASTTypeId id = new CPPASTTypeId();
CPPASTNamedTypeSpecifier namedTypeSpecifier = new CPPASTNamedTypeSpecifier();
namedTypeSpecifier.setName(simpleTypeTemplateParameter.getName().copy());
id.setDeclSpecifier(namedTypeSpecifier);
templateId.addTemplateArgument(id);
}
}
parentName = templateId;
}
return parentName;
}
private static boolean classHasTemplates(IASTNode declarationParent) {
return declarationParent.getParent() != null
&& declarationParent.getParent().getParent() instanceof ICPPASTTemplateDeclaration;
}
}
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