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<?php
// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// https://developers.google.com/protocol-buffers/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * 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.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "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 COPYRIGHT
// OWNER OR CONTRIBUTORS 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.
/**
* MapField and MapFieldIter are used by generated protocol message classes to
* manipulate map fields.
*/
namespace Google\Protobuf\Internal;
/**
* MapFieldIter is used to iterate MapField. It is also need for the foreach
* syntax.
*/
class MapFieldIter implements \Iterator
{
/**
* @ignore
*/
private $container;
/**
* Create iterator instance for MapField.
*
* @param MapField The MapField instance for which this iterator is
* created.
* @param GPBType Map key type.
* @ignore
*/
public function __construct($container, $key_type)
{
$this->container = $container;
$this->key_type = $key_type;
}
/**
* Reset the status of the iterator
*
* @return void
*/
public function rewind()
{
return reset($this->container);
}
/**
* Return the element at the current position.
*
* @return object The element at the current position.
*/
public function current()
{
return current($this->container);
}
/**
* Return the current key.
*
* @return object The current key.
*/
public function key()
{
$key = key($this->container);
if ($this->key_type === GPBType::BOOL) {
// PHP associative array stores bool as integer for key.
return boolval($key);
} elseif ($this->key_type === GPBType::STRING) {
// PHP associative array stores int string as int for key.
return strval($key);
} else {
return $key;
}
}
/**
* Move to the next position.
*
* @return void
*/
public function next()
{
return next($this->container);
}
/**
* Check whether there are more elements to iterate.
*
* @return bool True if there are more elements to iterate.
*/
public function valid()
{
return key($this->container) !== null;
}
}
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