summaryrefslogtreecommitdiff
path: root/resources/mediawiki.libs/CLDRPluralRuleParser.js
diff options
context:
space:
mode:
Diffstat (limited to 'resources/mediawiki.libs/CLDRPluralRuleParser.js')
-rw-r--r--resources/mediawiki.libs/CLDRPluralRuleParser.js475
1 files changed, 0 insertions, 475 deletions
diff --git a/resources/mediawiki.libs/CLDRPluralRuleParser.js b/resources/mediawiki.libs/CLDRPluralRuleParser.js
deleted file mode 100644
index 3def37c5..00000000
--- a/resources/mediawiki.libs/CLDRPluralRuleParser.js
+++ /dev/null
@@ -1,475 +0,0 @@
-/* This is CLDRPluralRuleParser v1.1, ported to MediaWiki ResourceLoader */
-
-/**
-* CLDRPluralRuleParser.js
-* A parser engine for CLDR plural rules.
-*
-* Copyright 2012 GPLV3+, Santhosh Thottingal
-*
-* @version 0.1.0-alpha
-* @source https://github.com/santhoshtr/CLDRPluralRuleParser
-* @author Santhosh Thottingal <santhosh.thottingal@gmail.com>
-* @author Timo Tijhof
-* @author Amir Aharoni
-*/
-
-( function ( mw ) {
-/**
- * Evaluates a plural rule in CLDR syntax for a number
- * @param {string} rule
- * @param {integer} number
- * @return {boolean} true if evaluation passed, false if evaluation failed.
- */
-
-function pluralRuleParser(rule, number) {
- /*
- Syntax: see http://unicode.org/reports/tr35/#Language_Plural_Rules
- -----------------------------------------------------------------
- condition = and_condition ('or' and_condition)*
- ('@integer' samples)?
- ('@decimal' samples)?
- and_condition = relation ('and' relation)*
- relation = is_relation | in_relation | within_relation
- is_relation = expr 'is' ('not')? value
- in_relation = expr (('not')? 'in' | '=' | '!=') range_list
- within_relation = expr ('not')? 'within' range_list
- expr = operand (('mod' | '%') value)?
- operand = 'n' | 'i' | 'f' | 't' | 'v' | 'w'
- range_list = (range | value) (',' range_list)*
- value = digit+
- digit = 0|1|2|3|4|5|6|7|8|9
- range = value'..'value
- samples = sampleRange (',' sampleRange)* (',' ('…'|'...'))?
- sampleRange = decimalValue '~' decimalValue
- decimalValue = value ('.' value)?
- */
-
- // we don't evaluate the samples section of the rule. Ignore it.
- rule = rule.split('@')[0].trim();
-
- if (!rule.length) {
- // empty rule or 'other' rule.
- return true;
- }
- // Indicates current position in the rule as we parse through it.
- // Shared among all parsing functions below.
- var pos = 0,
- operand,
- expression,
- relation,
- result,
- whitespace = makeRegexParser(/^\s+/),
- value = makeRegexParser(/^\d+/),
- _n_ = makeStringParser('n'),
- _i_ = makeStringParser('i'),
- _f_ = makeStringParser('f'),
- _t_ = makeStringParser('t'),
- _v_ = makeStringParser('v'),
- _w_ = makeStringParser('w'),
- _is_ = makeStringParser('is'),
- _isnot_ = makeStringParser('is not'),
- _isnot_sign_ = makeStringParser('!='),
- _equal_ = makeStringParser('='),
- _mod_ = makeStringParser('mod'),
- _percent_ = makeStringParser('%'),
- _not_ = makeStringParser('not'),
- _in_ = makeStringParser('in'),
- _within_ = makeStringParser('within'),
- _range_ = makeStringParser('..'),
- _comma_ = makeStringParser(','),
- _or_ = makeStringParser('or'),
- _and_ = makeStringParser('and');
-
- function debug() {
- // console.log.apply(console, arguments);
- }
-
- debug('pluralRuleParser', rule, number);
-
- // Try parsers until one works, if none work return null
-
- function choice(parserSyntax) {
- return function() {
- for (var i = 0; i < parserSyntax.length; i++) {
- var result = parserSyntax[i]();
- if (result !== null) {
- return result;
- }
- }
- return null;
- };
- }
-
- // Try several parserSyntax-es in a row.
- // All must succeed; otherwise, return null.
- // This is the only eager one.
-
- function sequence(parserSyntax) {
- var originalPos = pos;
- var result = [];
- for (var i = 0; i < parserSyntax.length; i++) {
- var res = parserSyntax[i]();
- if (res === null) {
- pos = originalPos;
- return null;
- }
- result.push(res);
- }
- return result;
- }
-
- // Run the same parser over and over until it fails.
- // Must succeed a minimum of n times; otherwise, return null.
-
- function nOrMore(n, p) {
- return function() {
- var originalPos = pos;
- var result = [];
- var parsed = p();
- while (parsed !== null) {
- result.push(parsed);
- parsed = p();
- }
- if (result.length < n) {
- pos = originalPos;
- return null;
- }
- return result;
- };
- }
-
- // Helpers -- just make parserSyntax out of simpler JS builtin types
- function makeStringParser(s) {
- var len = s.length;
- return function() {
- var result = null;
- if (rule.substr(pos, len) === s) {
- result = s;
- pos += len;
- }
-
- return result;
- };
- }
-
- function makeRegexParser(regex) {
- return function() {
- var matches = rule.substr(pos).match(regex);
- if (matches === null) {
- return null;
- }
- pos += matches[0].length;
- return matches[0];
- };
- }
-
- /*
- * integer digits of n.
- */
- function i() {
- var result = _i_();
- if (result === null) {
- debug(' -- failed i', parseInt(number, 10));
- return result;
- }
- result = parseInt(number, 10);
- debug(' -- passed i ', result);
- return result;
- }
-
- /*
- * absolute value of the source number (integer and decimals).
- */
- function n() {
- var result = _n_();
- if (result === null) {
- debug(' -- failed n ', number);
- return result;
- }
- result = parseFloat(number, 10);
- debug(' -- passed n ', result);
- return result;
- }
-
- /*
- * visible fractional digits in n, with trailing zeros.
- */
- function f() {
- var result = _f_();
- if (result === null) {
- debug(' -- failed f ', number);
- return result;
- }
- result = (number + '.').split('.')[1] || 0;
- debug(' -- passed f ', result);
- return result;
- }
-
- /*
- * visible fractional digits in n, without trailing zeros.
- */
- function t() {
- var result = _t_();
- if (result === null) {
- debug(' -- failed t ', number);
- return result;
- }
- result = (number + '.').split('.')[1].replace(/0$/, '') || 0;
- debug(' -- passed t ', result);
- return result;
- }
-
- /*
- * number of visible fraction digits in n, with trailing zeros.
- */
- function v() {
- var result = _v_();
- if (result === null) {
- debug(' -- failed v ', number);
- return result;
- }
- result = (number + '.').split('.')[1].length || 0;
- debug(' -- passed v ', result);
- return result;
- }
-
- /*
- * number of visible fraction digits in n, without trailing zeros.
- */
- function w() {
- var result = _w_();
- if (result === null) {
- debug(' -- failed w ', number);
- return result;
- }
- result = (number + '.').split('.')[1].replace(/0$/, '').length || 0;
- debug(' -- passed w ', result);
- return result;
- }
-
- // operand = 'n' | 'i' | 'f' | 't' | 'v' | 'w'
- operand = choice([n, i, f, t, v, w]);
-
- // expr = operand (('mod' | '%') value)?
- expression = choice([mod, operand]);
-
- function mod() {
- var result = sequence([operand, whitespace, choice([_mod_, _percent_]), whitespace, value]);
- if (result === null) {
- debug(' -- failed mod');
- return null;
- }
- debug(' -- passed ' + parseInt(result[0], 10) + ' ' + result[2] + ' ' + parseInt(result[4], 10));
- return parseInt(result[0], 10) % parseInt(result[4], 10);
- }
-
- function not() {
- var result = sequence([whitespace, _not_]);
- if (result === null) {
- debug(' -- failed not');
- return null;
- }
-
- return result[1];
- }
-
- // is_relation = expr 'is' ('not')? value
- function is() {
- var result = sequence([expression, whitespace, choice([_is_]), whitespace, value]);
- if (result !== null) {
- debug(' -- passed is : ' + result[0] + ' == ' + parseInt(result[4], 10));
- return result[0] === parseInt(result[4], 10);
- }
- debug(' -- failed is');
- return null;
- }
-
- // is_relation = expr 'is' ('not')? value
- function isnot() {
- var result = sequence([expression, whitespace, choice([_isnot_, _isnot_sign_]), whitespace, value]);
- if (result !== null) {
- debug(' -- passed isnot: ' + result[0] + ' != ' + parseInt(result[4], 10));
- return result[0] !== parseInt(result[4], 10);
- }
- debug(' -- failed isnot');
- return null;
- }
-
- function not_in() {
- var result = sequence([expression, whitespace, _isnot_sign_, whitespace, rangeList]);
- if (result !== null) {
- debug(' -- passed not_in: ' + result[0] + ' != ' + result[4]);
- var range_list = result[4];
- for (var i = 0; i < range_list.length; i++) {
- if (parseInt(range_list[i], 10) === parseInt(result[0], 10)) {
- return false;
- }
- }
- return true;
- }
- debug(' -- failed not_in');
- return null;
- }
-
- // range_list = (range | value) (',' range_list)*
- function rangeList() {
- var result = sequence([choice([range, value]), nOrMore(0, rangeTail)]);
- var resultList = [];
- if (result !== null) {
- resultList = resultList.concat(result[0]);
- if (result[1][0]) {
- resultList = resultList.concat(result[1][0]);
- }
- return resultList;
- }
- debug(' -- failed rangeList');
- return null;
- }
-
- function rangeTail() {
- // ',' range_list
- var result = sequence([_comma_, rangeList]);
- if (result !== null) {
- return result[1];
- }
- debug(' -- failed rangeTail');
- return null;
- }
-
- // range = value'..'value
-
- function range() {
- var i;
- var result = sequence([value, _range_, value]);
- if (result !== null) {
- debug(' -- passed range');
- var array = [];
- var left = parseInt(result[0], 10);
- var right = parseInt(result[2], 10);
- for (i = left; i <= right; i++) {
- array.push(i);
- }
- return array;
- }
- debug(' -- failed range');
- return null;
- }
-
- function _in() {
- // in_relation = expr ('not')? 'in' range_list
- var result = sequence([expression, nOrMore(0, not), whitespace, choice([_in_, _equal_]), whitespace, rangeList]);
- if (result !== null) {
- debug(' -- passed _in:' + result);
- var range_list = result[5];
- for (var i = 0; i < range_list.length; i++) {
- if (parseInt(range_list[i], 10) === parseInt(result[0], 10)) {
- return (result[1][0] !== 'not');
- }
- }
- return (result[1][0] === 'not');
- }
- debug(' -- failed _in ');
- return null;
- }
-
- /*
- * The difference between in and within is that in only includes integers in the specified range,
- * while within includes all values.
- */
-
- function within() {
- // within_relation = expr ('not')? 'within' range_list
- var result = sequence([expression, nOrMore(0, not), whitespace, _within_, whitespace, rangeList]);
- if (result !== null) {
- debug(' -- passed within');
- var range_list = result[5];
- if ((result[0] >= parseInt(range_list[0], 10)) &&
- (result[0] < parseInt(range_list[range_list.length - 1], 10))) {
- return (result[1][0] !== 'not');
- }
- return (result[1][0] === 'not');
- }
- debug(' -- failed within ');
- return null;
- }
-
- // relation = is_relation | in_relation | within_relation
- relation = choice([is, not_in, isnot, _in, within]);
-
- // and_condition = relation ('and' relation)*
- function and() {
- var result = sequence([relation, nOrMore(0, andTail)]);
- if (result) {
- if (!result[0]) {
- return false;
- }
- for (var i = 0; i < result[1].length; i++) {
- if (!result[1][i]) {
- return false;
- }
- }
- return true;
- }
- debug(' -- failed and');
- return null;
- }
-
- // ('and' relation)*
- function andTail() {
- var result = sequence([whitespace, _and_, whitespace, relation]);
- if (result !== null) {
- debug(' -- passed andTail' + result);
- return result[3];
- }
- debug(' -- failed andTail');
- return null;
-
- }
- // ('or' and_condition)*
- function orTail() {
- var result = sequence([whitespace, _or_, whitespace, and]);
- if (result !== null) {
- debug(' -- passed orTail: ' + result[3]);
- return result[3];
- }
- debug(' -- failed orTail');
- return null;
-
- }
-
- // condition = and_condition ('or' and_condition)*
- function condition() {
- var result = sequence([and, nOrMore(0, orTail)]);
- if (result) {
- for (var i = 0; i < result[1].length; i++) {
- if (result[1][i]) {
- return true;
- }
- }
- return result[0];
-
- }
- return false;
- }
-
- result = condition();
- /*
- * For success, the pos must have gotten to the end of the rule
- * and returned a non-null.
- * n.b. This is part of language infrastructure, so we do not throw an internationalizable message.
- */
- if (result === null) {
- throw new Error('Parse error at position ' + pos.toString() + ' for rule: ' + rule);
- }
-
- if (pos !== rule.length) {
- debug('Warning: Rule not parsed completely. Parser stopped at ' + rule.substr(0, pos) + ' for rule: ' + rule);
- }
-
- return result;
-}
-
-/* pluralRuleParser ends here */
-mw.libs.pluralRuleParser = pluralRuleParser;
-
-} )( mediaWiki );
generated by cgit v1.2.2 (git 2.25.0) at 2024-04-25 16:11:57 +0000