/*******************************************************************************
 * Copyright (c) 2005, 2008 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 Rational Software - Initial API and implementation
 * Yuan Zhang / Beth Tibbitts (IBM Research)
 *******************************************************************************/
package org.eclipse.cdt.internal.core.dom.parser.c;

import org.eclipse.cdt.core.dom.ast.ASTVisitor;
import org.eclipse.cdt.core.dom.ast.IASTLabelStatement;
import org.eclipse.cdt.core.dom.ast.IASTName;
import org.eclipse.cdt.core.dom.ast.IASTNode;
import org.eclipse.cdt.core.dom.ast.IASTStatement;
import org.eclipse.cdt.internal.core.dom.parser.ASTNode;
import org.eclipse.cdt.internal.core.dom.parser.IASTAmbiguityParent;

/**
 * @author jcamelon
 */
public class CASTLabelStatement extends ASTNode implements IASTLabelStatement, IASTAmbiguityParent {

    private IASTName name;
    private IASTStatement nestedStatement;

    
    public CASTLabelStatement() {
	}

	public CASTLabelStatement(IASTName name, IASTStatement nestedStatement) {
		setName(name);
		setNestedStatement(nestedStatement);
	}
	
	public CASTLabelStatement copy() {
		return copy(CopyStyle.withoutLocations);
	}

	public CASTLabelStatement copy(CopyStyle style) {
		CASTLabelStatement copy = new CASTLabelStatement();
		copy.setName(name == null ? null : name.copy(style));
		copy.setNestedStatement(nestedStatement == null ? null : nestedStatement.copy(style));
		copy.setOffsetAndLength(this);
		if (style == CopyStyle.withLocations) {
			copy.setCopyLocation(this);
		}
		return copy;
	}

	public IASTName getName() {
        return name;
    }

    public void setName(IASTName name) {
        assertNotFrozen();
        this.name = name;
        if (name != null) {
			name.setParent(this);
			name.setPropertyInParent(NAME);
		}
    }

    @Override
	public boolean accept( ASTVisitor action ){
        if( action.shouldVisitStatements ){
		    switch( action.visit( this ) ){
	            case ASTVisitor.PROCESS_ABORT : return false;
	            case ASTVisitor.PROCESS_SKIP  : return true;
	            default : break;
	        }
		}
        if( name != null ) if( !name.accept( action ) ) return false;
        if( nestedStatement != null ) if( !nestedStatement.accept( action ) ) return false;
        if( action.shouldVisitStatements ){
		    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( n == name )	return r_declaration;
		return r_unclear;
	}
    
    public IASTStatement getNestedStatement() {
        return nestedStatement;
    }

    public void setNestedStatement(IASTStatement s) {
        assertNotFrozen();
        nestedStatement = s;
        if (s != null) {
			s.setParent(this);
			s.setPropertyInParent(NESTED_STATEMENT);
		}
    }

    public void replace(IASTNode child, IASTNode other) {
        if( child == nestedStatement )
        {
            other.setParent( this );
            other.setPropertyInParent( child.getPropertyInParent() );
            setNestedStatement((IASTStatement) other);
        }
    }

}