Nominatim/lib-php/TokenList.php

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<?php
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/**
* SPDX-License-Identifier: GPL-2.0-only
*
* This file is part of Nominatim. (https://nominatim.org)
*
* Copyright (C) 2022 by the Nominatim developer community.
* For a full list of authors see the git log.
*/
namespace Nominatim;
require_once(CONST_LibDir.'/TokenCountry.php');
require_once(CONST_LibDir.'/TokenHousenumber.php');
require_once(CONST_LibDir.'/TokenPostcode.php');
require_once(CONST_LibDir.'/TokenSpecialTerm.php');
require_once(CONST_LibDir.'/TokenWord.php');
require_once(CONST_LibDir.'/TokenPartial.php');
require_once(CONST_LibDir.'/SpecialSearchOperator.php');
/**
* Saves information about the tokens that appear in a search query.
*
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* Tokens are sorted by their normalized form, the token word. There are different
* kinds of tokens, represented by different Token* classes. Note that
* tokens do not have a common base class. All tokens need to have a field
* with the word id that points to an entry in the `word` database table
* but otherwise the information saved about a token can be very different.
*/
class TokenList
{
// List of list of tokens indexed by their word_token.
private $aTokens = array();
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/**
* Return total number of tokens.
*
* @return Integer
*/
public function count()
{
return count($this->aTokens);
}
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/**
* Check if there are tokens for the given token word.
*
* @param string $sWord Token word to look for.
*
* @return bool True if there is one or more token for the token word.
*/
public function contains($sWord)
{
return isset($this->aTokens[$sWord]);
}
/**
* Check if there are partial or full tokens for the given word.
*
* @param string $sWord Token word to look for.
*
* @return bool True if there is one or more token for the token word.
*/
public function containsAny($sWord)
{
return isset($this->aTokens[$sWord]);
}
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/**
* Get the list of tokens for the given token word.
*
* @param string $sWord Token word to look for.
*
* @return object[] Array of tokens for the given token word or an
* empty array if no tokens could be found.
*/
public function get($sWord)
{
return isset($this->aTokens[$sWord]) ? $this->aTokens[$sWord] : array();
}
public function getFullWordIDs()
{
$ids = array();
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foreach ($this->aTokens as $aTokenList) {
foreach ($aTokenList as $oToken) {
if (is_a($oToken, '\Nominatim\Token\Word')) {
$ids[$oToken->getId()] = $oToken->getId();
}
}
}
return $ids;
}
/**
* Add a new token for the given word.
*
* @param string $sWord Word the token describes.
* @param object $oToken Token object to add.
*
* @return void
*/
public function addToken($sWord, $oToken)
{
if (isset($this->aTokens[$sWord])) {
$this->aTokens[$sWord][] = $oToken;
} else {
$this->aTokens[$sWord] = array($oToken);
}
}
public function debugTokenByWordIdList()
{
$aWordsIDs = array();
foreach ($this->aTokens as $sToken => $aWords) {
foreach ($aWords as $aToken) {
$iId = $aToken->getId();
if ($iId !== null) {
$aWordsIDs[$iId] = '#'.$sToken.'('.$aToken->debugCode().' '.$iId.')#';
}
}
}
return $aWordsIDs;
}
public function debugInfo()
{
return $this->aTokens;
}
}