https://github.com/hoaproject/Praspel
Revision 977d226b11831034b7ca948a654958d34a1c62e3 authored by Ivan Enderlin on 25 November 2013, 14:10:46 UTC, committed by Ivan Enderlin on 25 November 2013, 14:10:46 UTC
… at least one @behavior exists.
1 parent c265aef
Tip revision: 977d226b11831034b7ca948a654958d34a1c62e3 authored by Ivan Enderlin on 25 November 2013, 14:10:46 UTC
A @default can be declared if…
A @default can be declared if…
Tip revision: 977d226
Sampler.php
<?php
/**
* Hoa
*
*
* @license
*
* New BSD License
*
* Copyright © 2007-2013, Ivan Enderlin. All rights reserved.
*
* 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 the Hoa 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 HOLDERS AND 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.
*/
namespace {
from('Hoa')
/**
* \Hoa\Iterator
*/
-> import('Iterator.~')
/**
* \Hoa\Praspel\Iterator\Coverage\Domain
*/
-> import('Praspel.Iterator.Coverage.Domain');
}
namespace Hoa\Praspel\Iterator {
/**
* Class \Hoa\Praspel\Iterator\Sampler.
*
* An easy way to iterate over data described by Praspel.
*
* @author Ivan Enderlin <ivan.enderlin@hoa-project.net>
* @copyright Copyright © 2007-2013 Ivan Enderlin.
* @license New BSD License
*/
class Sampler implements \Hoa\Iterator {
/**
* Key value is variable name.
*
* @const int
*/
const KEY_AS_VARIABLE_NAME = 0;
/**
* Key value is variable position.
*
* @const int
*/
const KEY_AS_VARIABLE_POSITION = 1;
/**
* Declaration.
*
* @var \Hoa\Praspel\Model\Declaration object
*/
protected $_declaration = null;
/**
* Key type (please, see self::KEY_AS_* constants).
*
* @var \Hoa\Praspel\Iterator\Sampler int
*/
protected $_keyType = null;
/**
* Variables to consider.
*
* @var \Hoa\Praspel\Iterator\Sampler array
*/
protected $_variables = array();
/**
* Current key.
*
* @var \Hoa\Praspel\Iterator\Sampler int
*/
protected $_key = -1;
/**
* Current value.
*
* @var \Hoa\Praspel\Iterator\Sampler array
*/
protected $_current = null;
/**
* Coverage iterator.
*
* @var \Hoa\Praspel\Iterator\Coverage\Domain object
*/
protected $_coverage = null;
/**
* Construct.
*
* @access public
* @param \Hoa\Praspel\Model\Declaration $declaration Declaration.
* @param int $keyType Key type (plese,
* see
* self::KEY_AS*
* constants).
* @return void
*/
public function __construct ( \Hoa\Praspel\Model\Declaration $declaration,
$keyType = self::KEY_AS_VARIABLE_NAME ) {
$this->_declaration = $declaration;
$this->_keyType = $keyType;
return;
}
/**
* Consider some variables.
* Example:
* $this->extract('x', 'y', 'z')
*
* @access public
* @param string $variable Variable name.
* @param ... ... ...
* @return \Hoa\Praspel\Iterator\Sampler
*/
public function extract ( ) {
foreach(func_get_args() as $variable)
$this->_variables[] = $this->_declaration[$variable];
return $this;
}
/**
* Get current value.
*
* @access public
* @return array
*/
public function current ( ) {
return $this->_current;
}
/**
* Get current key.
*
* @access public
* @return int
*/
public function key ( ) {
return $this->_key;
}
/**
* Compute the next value and return it.
*
* @access public
* @return array
*/
public function next ( ) {
$this->_coverage->next();
$this->_current();
return $this->current();
}
/**
* Prepare the current value.
*
* @access protected
* @return void
*/
protected function _current ( ) {
$current = $this->_coverage->current();
$handle = array();
if(self::KEY_AS_VARIABLE_NAME === $this->_keyType)
foreach($current as $name => $domain)
$handle[$name] = $domain->sample();
else
foreach($current as $domain)
$handle[] = $domain->sample();
++$this->_key;
$this->_current = $handle;
return;
}
/**
* Rewind the iterator.
*
* @access public
* @return void
*/
public function rewind ( ) {
$this->_key = -1;
$this->_current = null;
if(null === $this->_coverage) {
if(empty($this->_variables))
$this->_variables = $this->_declaration->getLocalVariables();
$this->_coverage = new Coverage\Domain($this->_variables);
}
$this->_coverage->rewind();
$this->_current();
return;
}
/**
* Check if there is enough data to continue.
*
* @access public
* @return bool
*/
public function valid ( ) {
return $this->_coverage->valid();
}
}
}
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