/*******************************************************************************
 * Copyright (c) 2004, 2007 IBM Corporation 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:
 * IBM - Initial API and implementation
 *******************************************************************************/
package org.eclipse.cdt.internal.core.dom.parser.cpp;

import org.eclipse.cdt.core.dom.ast.ASTVisitor;
import org.eclipse.cdt.core.dom.ast.IASTName;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTNamespaceAlias;

/**
 * @author jcamelon
 */
public class CPPASTNamespaceAlias extends CPPASTNode implements ICPPASTNamespaceAlias {

    private IASTName alias;
    private IASTName qualifiedName;

    
    public CPPASTNamespaceAlias() {
    	// default constructor
	}

	public CPPASTNamespaceAlias(IASTName alias, IASTName qualifiedName) {
		setAlias(alias);
		setMappingName(qualifiedName);
	}

	public IASTName getAlias() {
        return alias;
    }

    public void setAlias(IASTName name) {
        this.alias = name;
        if (name != null) {
			name.setParent(this);
			name.setPropertyInParent(ALIAS_NAME);
		}
    }

    public IASTName getMappingName() {
        return qualifiedName;
    }

    public void setMappingName(IASTName qualifiedName) {
        this.qualifiedName = qualifiedName;
        if (qualifiedName != null) {
			qualifiedName.setParent(this);
			qualifiedName.setPropertyInParent(MAPPING_NAME);
		}
    }

    public boolean accept( ASTVisitor action ){
        if( action.shouldVisitDeclarations ){
		    switch( action.visit( this ) ){
	            case ASTVisitor.PROCESS_ABORT : return false;
	            case ASTVisitor.PROCESS_SKIP  : return true;
	            default : break;
	        }
		}
        
        if( alias != null ) if( !alias.accept( action ) ) return false;
        if( qualifiedName != null ) if( !qualifiedName.accept( action ) ) return false;
        
        if( action.shouldVisitDeclarations ){
		    switch( action.leave( this ) ){
	            case ASTVisitor.PROCESS_ABORT : return false;
	            case ASTVisitor.PROCESS_SKIP  : return true;
	            default : break;
	        }
		}
        return true;
    }

	public int getRoleForName(IASTName n) {
		if( alias == n ) return r_definition;
		if( qualifiedName == n ) return r_reference;
		return r_unclear;
	}
}
