includes/Parser_DiffTest.php

   1 <?php
   2
   3 /**
   4  * @ingroup Parser
   5  */
   6 class Parser_DiffTest
   7 {
   8         var $parsers, $conf;
   9
  10         var $dfUniqPrefix;
  11
  12         function __construct( $conf ) {
  13                 if ( !isset( $conf['parsers'] ) ) {
  14                         throw new MWException( __METHOD__ . ': no parsers specified' );
  15                 }
  16                 $this->conf = $conf;
  17                 $this->dtUniqPrefix = "\x7fUNIQ" . Parser::getRandomString();
  18         }
  19
  20         function init() {
  21                 if ( !is_null( $this->parsers ) ) {
  22                         return;
  23                 }
  24
  25                 global $wgHooks;
  26                 static $doneHook = false;
  27                 if ( !$doneHook ) {
  28                         $doneHook = true;
  29                         $wgHooks['ParserClearState'][] = array( $this, 'onClearState' );
  30                 }
  31
  32                 foreach ( $this->conf['parsers'] as $i => $parserConf ) {
  33                         if ( !is_array( $parserConf ) ) {
  34                                 $class = $parserConf;
  35                                 $parserConf = array( 'class' => $parserConf );
  36                         } else {
  37                                 $class = $parserConf['class'];
  38                         }
  39                         $this->parsers[$i] = new $class( $parserConf );
  40                 }
  41         }
  42
  43         function __call( $name, $args ) {
  44                 $this->init();
  45                 $results = array();
  46                 $mismatch = false;
  47                 $lastResult = null;
  48                 $first = true;
  49                 foreach ( $this->parsers as $i => $parser ) {
  50                         $currentResult = call_user_func_array( array( &$this->parsers[$i], $name ), $args );
  51                         if ( $first ) {
  52                                 $first = false;
  53                         } else {
  54                                 if ( is_object( $lastResult ) ) {
  55                                         if ( $lastResult != $currentResult ) {
  56                                                 $mismatch = true;
  57                                         }
  58                                 } else {
  59                                         if ( $lastResult !== $currentResult ) {
  60                                                 $mismatch = true;
  61                                         }
  62                                 }
  63                         }
  64                         $results[$i] = $currentResult;
  65                         $lastResult = $currentResult;
  66                 }
  67                 if ( $mismatch ) {
  68                         throw new MWException( "Parser_DiffTest: results mismatch on call to $name\n" .
  69                                 'Arguments: ' . var_export( $args, true ) . "\n" .
  70                                 'Results: ' . var_export( $results, true ) . "\n" );
  71                 }
  72                 return $lastResult;
  73         }
  74
  75         function setFunctionHook( $id, $callback, $flags = 0 ) {
  76                 $this->init();
  77                 foreach  ( $this->parsers as $i => $parser ) {
  78                         $parser->setFunctionHook( $id, $callback, $flags );
  79                 }
  80         }
  81
  82         function onClearState( &$parser ) {
  83                 // hack marker prefixes to get identical output
  84                 $parser->mUniqPrefix = $this->dtUniqPrefix;
  85                 return true;
  86         }
  87 }