113 lines
2.5 KiB
PHP
113 lines
2.5 KiB
PHP
<?php
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/**
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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* @file
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* @ingroup Parser
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*/
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/**
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* Stack class to help Preprocessor::preprocessToObj()
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* @ingroup Parser
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*/
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class PPDStack {
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public $stack, $rootAccum;
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/**
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* @var PPDStack|false
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*/
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public $top;
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public $out;
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public $elementClass = PPDStackElement::class;
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public static $false = false;
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public function __construct() {
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$this->stack = [];
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$this->top = false;
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$this->rootAccum = '';
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$this->accum =& $this->rootAccum;
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}
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/**
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* @return int
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*/
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public function count() {
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return count( $this->stack );
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}
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public function &getAccum() {
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return $this->accum;
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}
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/**
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* @return bool|PPDPart
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*/
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public function getCurrentPart() {
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if ( $this->top === false ) {
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return false;
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} else {
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return $this->top->getCurrentPart();
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}
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}
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public function push( $data ) {
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if ( $data instanceof $this->elementClass ) {
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$this->stack[] = $data;
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} else {
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$class = $this->elementClass;
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$this->stack[] = new $class( $data );
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}
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$this->top = $this->stack[count( $this->stack ) - 1];
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$this->accum =& $this->top->getAccum();
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}
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public function pop() {
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if ( $this->stack === [] ) {
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throw new MWException( __METHOD__ . ': no elements remaining' );
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}
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$temp = array_pop( $this->stack );
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if ( count( $this->stack ) ) {
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$this->top = $this->stack[count( $this->stack ) - 1];
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$this->accum =& $this->top->getAccum();
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} else {
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$this->top = self::$false;
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$this->accum =& $this->rootAccum;
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}
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return $temp;
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}
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public function addPart( $s = '' ) {
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$this->top->addPart( $s );
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$this->accum =& $this->top->getAccum();
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}
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/**
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* @return array
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*/
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public function getFlags() {
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if ( $this->stack === [] ) {
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return [
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'findEquals' => false,
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'findPipe' => false,
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'inHeading' => false,
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];
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} else {
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return $this->top->getFlags();
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}
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}
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}
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