Nominatim/lib-php/TokenHousenumber.php
Sarah Hoffmann b14ce959d9 factor out check if a token fits current search
Saves allocating an empty array.
2021-07-17 22:01:35 +02:00

109 lines
3.0 KiB
PHP

<?php
namespace Nominatim\Token;
/**
* A house number token.
*/
class HouseNumber
{
/// Database word id, if available.
private $iId;
/// Normalized house number.
private $sToken;
public function __construct($iId, $sToken)
{
$this->iId = $iId;
$this->sToken = $sToken;
}
public function getId()
{
return $this->iId;
}
/**
* Check if the token can be added to the given search.
* Derive new searches by adding this token to an existing search.
*
* @param object $oSearch Partial search description derived so far.
* @param object $oPosition Description of the token position within
the query.
*
* @return True if the token is compatible with the search configuration
* given the position.
*/
public function isExtendable($oSearch, $oPosition)
{
return !$oSearch->hasHousenumber()
&& !$oSearch->hasOperator(\Nominatim\Operator::POSTCODE)
&& $oPosition->maybePhrase('street');
}
/**
* Derive new searches by adding this token to an existing search.
*
* @param object $oSearch Partial search description derived so far.
* @param object $oPosition Description of the token position within
the query.
*
* @return SearchDescription[] List of derived search descriptions.
*/
public function extendSearch($oSearch, $oPosition)
{
$aNewSearches = array();
// sanity check: if the housenumber is not mainly made
// up of numbers, add a penalty
$iSearchCost = 1;
if (preg_match('/\\d/', $this->sToken) === 0
|| preg_match_all('/[^0-9]/', $this->sToken, $aMatches) > 2) {
$iSearchCost++;
}
if (!$oSearch->hasOperator(\Nominatim\Operator::NONE)) {
$iSearchCost++;
}
if (empty($this->iId)) {
$iSearchCost++;
}
// also must not appear in the middle of the address
if ($oSearch->hasAddress() || $oSearch->hasPostcode()) {
$iSearchCost++;
}
$oNewSearch = $oSearch->clone($iSearchCost);
$oNewSearch->setHousenumber($this->sToken);
$aNewSearches[] = $oNewSearch;
// Housenumbers may appear in the name when the place has its own
// address terms.
if ($this->iId !== null
&& ($oSearch->getNamePhrase() >= 0 || !$oSearch->hasName())
&& !$oSearch->hasAddress()
) {
$oNewSearch = $oSearch->clone($iSearchCost);
$oNewSearch->setHousenumberAsName($this->iId);
$aNewSearches[] = $oNewSearch;
}
return $aNewSearches;
}
public function debugInfo()
{
return array(
'ID' => $this->iId,
'Type' => 'house number',
'Info' => array('nr' => $this->sToken)
);
}
public function debugCode()
{
return 'H';
}
}