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/*******************************************************************************
* Copyright (c) 2006, 2008 QNX Software Systems 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:
* QNX - Initial API and implementation
* Markus Schorn (Wind River Systems)
*******************************************************************************/
package org.eclipse.cdt.internal.core.pdom.dom.cpp;
import org.eclipse.cdt.core.CCorePlugin;
import org.eclipse.cdt.core.dom.ast.DOMException;
import org.eclipse.cdt.core.dom.ast.IBinding;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPNamespaceAlias;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPNamespaceScope;
import org.eclipse.cdt.internal.core.index.IIndexCPPBindingConstants;
import org.eclipse.cdt.internal.core.pdom.PDOM;
import org.eclipse.cdt.internal.core.pdom.dom.PDOMBinding;
import org.eclipse.cdt.internal.core.pdom.dom.PDOMLinkage;
import org.eclipse.cdt.internal.core.pdom.dom.PDOMNode;
import org.eclipse.cdt.internal.core.pdom.dom.PDOMNotImplementedError;
import org.eclipse.core.runtime.CoreException;
/**
* @author Doug Schaefer
*
*/
class PDOMCPPNamespaceAlias extends PDOMCPPBinding implements ICPPNamespaceAlias {
@SuppressWarnings("static-access")
private static final int NAMESPACE_BINDING = PDOMCPPBinding.RECORD_SIZE + 0;
@SuppressWarnings({ "hiding", "static-access" })
protected static final int RECORD_SIZE = PDOMCPPBinding.RECORD_SIZE + 4;
public PDOMCPPNamespaceAlias(PDOM pdom, PDOMNode parent, ICPPNamespaceAlias alias)
throws CoreException {
super(pdom, parent, alias.getNameCharArray());
setTargetBinding(parent.getLinkageImpl(), alias.getBinding());
}
public PDOMCPPNamespaceAlias(PDOM pdom, int record) {
super(pdom, record);
}
@Override
public void update(final PDOMLinkage linkage, IBinding newBinding) throws CoreException {
if (newBinding instanceof ICPPNamespaceAlias) {
ICPPNamespaceAlias alias= (ICPPNamespaceAlias) newBinding;
IBinding oldTarget= getBinding();
IBinding newTarget= alias.getBinding();
setTargetBinding(linkage, newTarget);
if (oldTarget != null) {
linkage.deleteBinding(oldTarget);
}
}
}
private void setTargetBinding(PDOMLinkage linkage, IBinding target) throws CoreException {
PDOMBinding namespace = getLinkageImpl().adaptBinding(target);
pdom.getDB().putInt(record + NAMESPACE_BINDING,
namespace != null ? namespace.getRecord() : 0);
}
@Override
protected int getRecordSize() {
return RECORD_SIZE;
}
@Override
public int getNodeType() {
return IIndexCPPBindingConstants.CPPNAMESPACEALIAS;
}
public ICPPNamespaceScope getNamespaceScope() throws DOMException {
return getNamespaceScope(this, 20); // avoid an infinite loop.
}
private ICPPNamespaceScope getNamespaceScope(PDOMCPPNamespaceAlias alias, final int maxDepth) {
IBinding binding= alias.getBinding();
if (binding instanceof ICPPNamespaceScope) {
return (ICPPNamespaceScope) binding;
}
if (maxDepth <= 0) {
return null;
}
if (binding instanceof PDOMCPPNamespaceAlias) {
return getNamespaceScope((PDOMCPPNamespaceAlias) binding, maxDepth-1);
}
return null;
}
public IBinding[] getMemberBindings() throws DOMException {
throw new PDOMNotImplementedError();
}
public IBinding getBinding() {
try {
return (IBinding) getLinkageImpl().getNode(getPDOM().getDB().getInt(record + NAMESPACE_BINDING));
} catch(CoreException ce) {
CCorePlugin.log(ce);
}
return null;
}
}
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