// Copyright 2009, Google Inc. All rights reserved.
//
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// modification, are permitted provided that the following conditions are met:
//
//  1. Redistributions of source code must retain the above copyright notice,
//     this list of conditions and the following disclaimer.
//  2. Redistributions in binary form must reproduce the above copyright notice,
//     this list of conditions and the following disclaimer in the documentation
//     and/or other materials provided with the distribution.
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//     used to endorse or promote products derived from this software without
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//
// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
// EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
// OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

// WARNING: THE VISITOR API IMPLEMENTED IN THIS CLASS IS EXPERIMENTAL AND
// SUBJECT TO CHANGE WITHOUT WARNING.

#include "kml/dom/visitor.h"

#include "kml/dom/kmldom.h"
#include "kml/dom/kml_cast.h"

namespace kmldom {

VisitorDriver::VisitorDriver() { }

VisitorDriver::~VisitorDriver() { }


SimplePreorderDriver::SimplePreorderDriver(Visitor* visitor)
    : visitor_(visitor) {
}

SimplePreorderDriver::~SimplePreorderDriver() { }

void SimplePreorderDriver::Visit(const ElementPtr& element) {
  element->Accept(visitor_);
  element->AcceptChildren(this);
}


SimplePostorderDriver::SimplePostorderDriver(Visitor* visitor)
    : visitor_(visitor) {
}

SimplePostorderDriver::~SimplePostorderDriver() { }

void SimplePostorderDriver::Visit(const ElementPtr& element) {
  element->AcceptChildren(this);
  element->Accept(visitor_);
}

}  // namespace kmldom
