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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.
/**
* RepeatedField and RepeatedFieldIter are used by generated protocol message
* classes to manipulate repeated fields.
*/
namespace Google\Protobuf\Internal;
use Google\Protobuf\Internal\GPBType;
use Google\Protobuf\Internal\GPBUtil;
/**
* RepeatedField is used by generated protocol message classes to manipulate
* repeated fields. It can be used like native PHP array.
*/
class RepeatedField implements \ArrayAccess, \IteratorAggregate, \Countable
{
/**
* @ignore
*/
private $container;
/**
* @ignore
*/
private $type;
/**
* @ignore
*/
private $klass;
/**
* Constructs an instance of RepeatedField.
*
* @param long $type Type of the stored element.
* @param string $klass Message/Enum class name (message/enum fields only).
* @ignore
*/
public function __construct($type, $klass = null)
{
$this->container = [];
$this->type = $type;
$this->klass = $klass;
}
/**
* @ignore
*/
public function getType()
{
return $this->type;
}
/**
* @ignore
*/
public function getClass()
{
return $this->klass;
}
/**
* Return the element at the given index.
*
* This will also be called for: $ele = $arr[0]
*
* @param long $offset The index of the element to be fetched.
* @return object The stored element at given index.
* @throws ErrorException Invalid type for index.
* @throws ErrorException Non-existing index.
*/
public function offsetGet($offset)
{
return $this->container[$offset];
}
/**
* Assign the element at the given index.
*
* This will also be called for: $arr []= $ele and $arr[0] = ele
*
* @param long $offset The index of the element to be assigned.
* @param object $value The element to be assigned.
* @return void
* @throws ErrorException Invalid type for index.
* @throws ErrorException Non-existing index.
* @throws ErrorException Incorrect type of the element.
*/
public function offsetSet($offset, $value)
{
switch ($this->type) {
case GPBType::INT32:
GPBUtil::checkInt32($value);
break;
case GPBType::UINT32:
GPBUtil::checkUint32($value);
break;
case GPBType::INT64:
GPBUtil::checkInt64($value);
break;
case GPBType::UINT64:
GPBUtil::checkUint64($value);
break;
case GPBType::FLOAT:
GPBUtil::checkFloat($value);
break;
case GPBType::DOUBLE:
GPBUtil::checkDouble($value);
break;
case GPBType::BOOL:
GPBUtil::checkBool($value);
break;
case GPBType::STRING:
GPBUtil::checkString($value, true);
break;
case GPBType::MESSAGE:
if (is_null($value)) {
trigger_error("RepeatedField element cannot be null.",
E_USER_ERROR);
}
GPBUtil::checkMessage($value, $this->klass);
break;
default:
break;
}
if (is_null($offset)) {
$this->container[] = $value;
} else {
$count = count($this->container);
if (!is_numeric($offset) || $offset < 0 || $offset >= $count) {
trigger_error(
"Cannot modify element at the given index",
E_USER_ERROR);
return;
}
$this->container[$offset] = $value;
}
}
/**
* Remove the element at the given index.
*
* This will also be called for: unset($arr)
*
* @param long $offset The index of the element to be removed.
* @return void
* @throws ErrorException Invalid type for index.
* @throws ErrorException The element to be removed is not at the end of the
* RepeatedField.
*/
public function offsetUnset($offset)
{
$count = count($this->container);
if (!is_numeric($offset) || $count === 0 || $offset !== $count - 1) {
trigger_error(
"Cannot remove element at the given index",
E_USER_ERROR);
return;
}
array_pop($this->container);
}
/**
* Check the existence of the element at the given index.
*
* This will also be called for: isset($arr)
*
* @param long $offset The index of the element to be removed.
* @return bool True if the element at the given offset exists.
* @throws ErrorException Invalid type for index.
*/
public function offsetExists($offset)
{
return isset($this->container[$offset]);
}
/**
* @ignore
*/
public function getIterator()
{
return new RepeatedFieldIter($this->container);
}
/**
* Return the number of stored elements.
*
* This will also be called for: count($arr)
*
* @return integer The number of stored elements.
*/
public function count()
{
return count($this->container);
}
}
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