+
+ /**
+ * Formats a list of parameters as a concatenated string.
+ * @since 1.29
+ * @param array $params
+ * @param string $listType
+ * @param string $format One of the FORMAT_* constants.
+ * @return array Array with the parameter type (either "before" or "after") and the value.
+ */
+ protected function formatListParam( array $params, $listType, $format ) {
+ if ( !isset( self::$listTypeMap[$listType] ) ) {
+ $warning = 'Invalid list type for message "' . $this->getKey() . '": '
+ . htmlspecialchars( $listType )
+ . ' (params are ' . htmlspecialchars( serialize( $params ) ) . ')';
+ trigger_error( $warning, E_USER_WARNING );
+ $e = new Exception;
+ wfDebugLog( 'Bug58676', $warning . "\n" . $e->getTraceAsString() );
+ return [ 'before', '[INVALID]' ];
+ }
+ $func = self::$listTypeMap[$listType];
+
+ // Handle an empty list sensibly
+ if ( !$params ) {
+ return [ 'before', $this->getLanguage()->$func( [] ) ];
+ }
+
+ // First, determine what kinds of list items we have
+ $types = [];
+ $vars = [];
+ $list = [];
+ foreach ( $params as $n => $p ) {
+ list( $type, $value ) = $this->extractParam( $p, $format );
+ $types[$type] = true;
+ $list[] = $value;
+ $vars[] = '$' . ( $n + 1 );
+ }
+
+ // Easy case: all are 'before' or 'after', so just join the
+ // values and use the same type.
+ if ( count( $types ) === 1 ) {
+ return [ key( $types ), $this->getLanguage()->$func( $list ) ];
+ }
+
+ // Hard case: We need to process each value per its type, then
+ // return the concatenated values as 'after'. We handle this by turning
+ // the list into a RawMessage and processing that as a parameter.
+ $vars = $this->getLanguage()->$func( $vars );
+ return $this->extractParam( new RawMessage( $vars, $params ), $format );
+ }