/*******************************************************************************
 * Copyright (c) 2004, 2006 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 Corporation - initial API and implementation
 *     Markus Schorn (Wind River Systems)
 *******************************************************************************/
/*
 * Created on Dec 10, 2004
 */
package org.eclipse.cdt.internal.core.dom.parser.cpp;

import org.eclipse.cdt.core.dom.ast.ASTTypeUtil;
import org.eclipse.cdt.core.dom.ast.IASTPointer;
import org.eclipse.cdt.core.dom.ast.IPointerType;
import org.eclipse.cdt.core.dom.ast.IType;
import org.eclipse.cdt.core.dom.ast.ITypedef;
import org.eclipse.cdt.internal.core.dom.parser.ITypeContainer;
import org.eclipse.cdt.internal.core.index.IIndexType;

/**
 * @author aniefer
 */
public class CPPPointerType implements IPointerType, ITypeContainer {
	protected IType type = null;
	private boolean isConst = false;
	private boolean isVolatile = false;
	/**
	 * @param type
	 * @param operator
	 */
	public CPPPointerType(IType type, IASTPointer operator) {
		this.type = type;
		this.isConst = operator.isConst();
		this.isVolatile = operator.isVolatile();
	}

	/**
	 * @param type2
	 */
	public CPPPointerType(IType type, boolean isConst, boolean isVolatile ) {
		this.type = type;
		this.isConst = isConst;
		this.isVolatile = isVolatile;
	}
	
	public CPPPointerType( IType type ){
	    this.type = type;
	}

	public IType stripQualifiers(){
		CPPPointerType result = this;
		if( isConst || isVolatile ){
			result = (CPPPointerType) clone();
			result.isConst = false;
			result.isVolatile = false;
		}
		return result;
	}
	
	public boolean isSameType( IType o ){
	    if( o == this )
            return true;
        if( o instanceof ITypedef || o instanceof IIndexType)
            return o.isSameType( this );
        
	    if( !( o instanceof CPPPointerType ) ) 
	        return false;
	    
	    if( type == null )
	        return false;
	    
	    CPPPointerType pt = (CPPPointerType) o;
	    if( isConst == pt.isConst && isVolatile == pt.isVolatile )
	        return type.isSameType( pt.getType() );
	    return false;
	}
	
	/* (non-Javadoc)
	 * @see org.eclipse.cdt.core.dom.ast.IPointerType#getType()
	 */
	public IType getType() {
		return type;
	}
	
	public void setType( IType t ){
	    type = t;
	}

	/* (non-Javadoc)
	 * @see org.eclipse.cdt.core.dom.ast.IPointerType#isConst()
	 */
	public boolean isConst() {
		return isConst;
	}

	/* (non-Javadoc)
	 * @see org.eclipse.cdt.core.dom.ast.IPointerType#isVolatile()
	 */
	public boolean isVolatile() {
		return isVolatile;
	}
	
    public Object clone(){
        IType t = null;
   		try {
            t = (IType) super.clone();
        } catch ( CloneNotSupportedException e ) {
            //not going to happen
        }
        return t;
    }

	public String toString() {
		return ASTTypeUtil.getType(this);
	}
}
