ConstHDF.cc

/*
 * $Id: ConstHDF.cc,v 1.4 2006/03/27 19:17:43 brook Exp $
 */

/*
 * ClearSilver++ Software License.
 *
 * Copyright (c) 2005,2006 Brook Milligan <brook@nmsu.edu>
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * 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.
 * 3. The name of the author may not be used to endorse or promote
 *    products derived from this software without specific prior
 *    written permission.
 * 
 * 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,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "ConstHDF.h"

#include <stdexcept>
#include <string.h>
#include "HDF.h"

using namespace std;

                                // constructors
ClearSilver::ConstHDF::ConstHDF ()
  : ConstHDFNode(), root_(), nodes_() {}
ClearSilver::ConstHDF::ConstHDF (const char * path)
  : ConstHDFNode(), root_(), nodes_() { root_().read_file(path); }
ClearSilver::ConstHDF::ConstHDF (const string& path)
  : ConstHDFNode(), root_(), nodes_() { root_().read_file(path); }
ClearSilver::ConstHDF::ConstHDF (const RootNode& root)
  : ConstHDFNode(), root_(root), nodes_() {}
ClearSilver::ConstHDF::ConstHDF (const HDF& hdf)
  : ConstHDFNode(), root_(hdf.root_), nodes_(hdf.nodes_) {}
ClearSilver::ConstHDF::ConstHDF (const ConstHDF& hdf)
  : ConstHDFNode(), root_(hdf.root_), nodes_(hdf.nodes_) {}
ClearSilver::ConstHDF::~ConstHDF () throw () {}

                                // assignment
ClearSilver::ConstHDF&
ClearSilver::ConstHDF::operator = (const ConstHDF& hdf)
{
  ConstHDF hdf0 (hdf);
  swap (hdf0);
  return *this;
}

                                // inspectors
                                // nesting depth
ClearSilver::ConstHDF::size_type
ClearSilver::ConstHDF::depth () const
{
  return nodes_.depth();
}

                                // path to the current node.
std::string
ClearSilver::ConstHDF::path () const
{
  return nodes_.path();
}

                                // associative array-like interface
ClearSilver::ConstHDF::const_reference
ClearSilver::ConstHDF::operator [] (const char * key) const
{
  return operator [] (std::string(key));
}

ClearSilver::ConstHDF::const_reference
ClearSilver::ConstHDF::operator [] (const string& key) const
{
  return *find(key);
}

                                // STL iterators
ClearSilver::ConstHDF::const_iterator
ClearSilver::ConstHDF::begin () const
{
  if (empty())                  // XXX
    return end();

  const_iterator i (*this);
  i.is_iterator() = true;
  ClearSilverNode child (i->node().child());
  string name;
  if (child)
    name = child.name();
  i->push(name, child);
  return i;
}

ClearSilver::ConstHDF::const_iterator
ClearSilver::ConstHDF::end () const
{
  const_iterator i (*this);
  i.is_iterator() = true;
  i->push (string(), ClearSilverNode());
  return i;
}

ClearSilver::ConstHDF::const_iterator
ClearSilver::ConstHDF::find (const char * key) const
{
  return find(std::string(key));
}

ClearSilver::ConstHDF::const_iterator
ClearSilver::ConstHDF::find (const string& key) const
{
  Nodes nodes (find_node (key));
  const_iterator i (*this);
  i.is_iterator() = true;
  i->nodes() = nodes;
  return i;
}

                                // iterator methods
#if XXX
ClearSilver::ConstHDF::const_iterator&
ClearSilver::ConstHDF::operator ++ ();

ClearSilver::ConstHDF::const_iterator
ClearSilver::ConstHDF::operator ++ (int);
    // XXX - no longer an iterator
#endif

ClearSilver::ConstHDF::value_type
ClearSilver::ConstHDF::operator * ()
{
  value_type v(*this);
  v.is_iterator() = false;
  return v;
}

ClearSilver::ConstHDF::pointer
ClearSilver::ConstHDF::operator -> ()
{
  return this;
}

ClearSilver::Nodes
ClearSilver::ConstHDF::nodes () const
{
  return nodes_;
}

ClearSilver::Nodes&
ClearSilver::ConstHDF::nodes ()
{
  return nodes_;
}

ClearSilver::ClearSilverNode
ClearSilver::ConstHDF::node () const
{
  if (nodes_.empty())
    return root_();
  return nodes_.top();
}

                                // access the root node
ClearSilver::ClearSilverNode
ClearSilver::ConstHDF::root () const
{
  return root_();
}

void
ClearSilver::ConstHDF::push (const Name& name,
                             const ClearSilverNode& node)
{
  nodes_.push(name, node);
}

void
ClearSilver::ConstHDF::pop ()
{
  if (nodes_.empty())
    {
      string message;
      message += "ClearSilver::ConstHDF::pop (): ";
      message += "empty stack";
      throw invalid_argument (message);
    }
  nodes_.pop();
}

ClearSilver::ClearSilverNode
ClearSilver::ConstHDF::top () const
{
  if (nodes_.empty())
    return ClearSilverNode();
  return nodes_.top();
}

                                // swap contents with another object.
void
ClearSilver::ConstHDF::swap (ConstHDF& hdf) throw()
{
  ConstHDFNode::swap (hdf);
  root_.swap (hdf.root_);
  nodes_.swap (hdf.nodes_);
}

                                // debug flag
bool&
ClearSilver::ConstHDF::debug ()
{
  static bool debug_ = false;
  return debug_;
}

namespace ClearSilver
{
                                // equality comparison operator
  bool
  operator == (const ConstHDF::reference& r1, const ConstHDF::reference& r2)
  {
    return r1.root_() == r2.root_() && r1.nodes_ == r2.nodes_;
  }
};                              // namespace ClearSilver

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