/*******************************************************************************
* Copyright (c) 2008, 2009 Wind River Systems, Inc. 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:
* Markus Schorn - initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.internal.core.dom.parser.cpp;
import org.eclipse.cdt.core.dom.ast.IType;
import org.eclipse.cdt.core.dom.ast.IValue;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPParameterPackType;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPTemplateArgument;
import org.eclipse.core.runtime.Assert;
/**
* Implementation of template arguments, used by ast and index.
*/
public class CPPTemplateArgument implements ICPPTemplateArgument {
private final IType fType;
private final IValue fValue;
public CPPTemplateArgument(IValue value, IType type) {
Assert.isNotNull(value);
fType= type;
fValue= value;
}
public CPPTemplateArgument(IType type) {
Assert.isNotNull(type);
fType= type;
fValue= null;
}
public boolean isTypeValue() {
return fValue == null;
}
public boolean isNonTypeValue() {
return fValue != null;
}
public IType getTypeValue() {
return isTypeValue() ? fType : null;
}
public IValue getNonTypeValue() {
return fValue;
}
public IType getTypeOfNonTypeValue() {
return isNonTypeValue() ? fType : null;
}
public boolean isPackExpansion() {
return fType instanceof ICPPParameterPackType;
}
public ICPPTemplateArgument getExpansionPattern() {
if (fType instanceof ICPPParameterPackType) {
IType t= ((ICPPParameterPackType) fType).getType();
if (t != null) {
if (fValue != null) {
return new CPPTemplateArgument(fValue, t);
}
return new CPPTemplateArgument(t);
}
}
return null;
}
public boolean isSameValue(ICPPTemplateArgument arg) {
if (fValue != null) {
return fValue.equals(arg.getNonTypeValue());
}
return fType.isSameType(arg.getTypeValue());
}
@Override
public String toString() {
if (fValue != null)
return fValue.toString();
return fType.toString();
}
}