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1<?php
2/**
3 * This program is free software; you can redistribute it and/or modify
4 * it under the terms of the GNU General Public License as published by
5 * the Free Software Foundation; either version 2 of the License, or
6 * (at your option) any later version.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write to the Free Software Foundation, Inc.,
15 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
16 *
17 */
18
19namespace MediaWiki\Extension\ParserFunctions;
20
21use Exception;
22use Message;
23
24class ExprError extends Exception {
25    /** @var Message */
26    private $mwMessage;
27
28    /**
29     * @param string $msg
30     * @param string $parameter
31     */
32    public function __construct( $msg, $parameter = '' ) {
33        // Give grep a chance to find the usages:
34        // pfunc_expr_stack_exhausted, pfunc_expr_unexpected_number, pfunc_expr_preg_match_failure,
35        // pfunc_expr_unrecognised_word, pfunc_expr_unexpected_operator, pfunc_expr_missing_operand,
36        // pfunc_expr_unexpected_closing_bracket, pfunc_expr_unrecognised_punctuation,
37        // pfunc_expr_unclosed_bracket, pfunc_expr_division_by_zero, pfunc_expr_invalid_argument,
38        // pfunc_expr_invalid_argument_ln, pfunc_expr_unknown_error, pfunc_expr_not_a_number
39        $this->mwMessage = wfMessage( "pfunc_expr_$msg", $parameter );
40    }
41
42    /**
43     * Replacement for getMessage() to prevent message parsing during tests which initializes
44     * whole bloody MediaWiki.
45     *
46     * @return string Error message to be to be displayed to end users
47     */
48    public function getUserFriendlyMessage() {
49        return $this->mwMessage->inContentLanguage()->text();
50    }
51}