kmx.io/prism.js/components/prism-icu-message-format.js

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• Hash : e2630d89
  Author :
  Date : 2021-09-26T11:52:18
  

  ESLint: Added `regexp/sort-alternatives` rule (#3093)

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• components/prism-icu-message-format.js

• // https://unicode-org.github.io/icu/userguide/format_parse/messages/
  // https://unicode-org.github.io/icu-docs/apidoc/released/icu4j/com/ibm/icu/text/MessageFormat.html
  
  (function (Prism) {
  
  	/**
  	 * @param {string} source
  	 * @param {number} level
  	 * @returns {string}
  	 */
  	function nested(source, level) {
  		if (level <= 0) {
  			return /[]/.source;
  		} else {
  			return source.replace(/<SELF>/g, function () { return nested(source, level - 1); });
  		}
  	}
  
  	var stringPattern = /'[{}:=,](?:[^']|'')*'(?!')/;
  
  	var escape = {
  		pattern: /''/,
  		greedy: true,
  		alias: 'operator'
  	};
  	var string = {
  		pattern: stringPattern,
  		greedy: true,
  		inside: {
  			'escape': escape
  		}
  	};
  
  	var argumentSource = nested(
  		/\{(?:[^{}']|'(?![{},'])|''|<STR>|<SELF>)*\}/.source
  			.replace(/<STR>/g, function () { return stringPattern.source; }),
  		8
  	);
  
  	var nestedMessage = {
  		pattern: RegExp(argumentSource),
  		inside: {
  			'message': {
  				pattern: /^(\{)[\s\S]+(?=\}$)/,
  				lookbehind: true,
  				inside: null // see below
  			},
  			'message-delimiter': {
  				pattern: /./,
  				alias: 'punctuation'
  			}
  		}
  	};
  
  	Prism.languages['icu-message-format'] = {
  		'argument': {
  			pattern: RegExp(argumentSource),
  			greedy: true,
  			inside: {
  				'content': {
  					pattern: /^(\{)[\s\S]+(?=\}$)/,
  					lookbehind: true,
  					inside: {
  						'argument-name': {
  							pattern: /^(\s*)[^{}:=,\s]+/,
  							lookbehind: true
  						},
  						'choice-style': {
  							// https://unicode-org.github.io/icu-docs/apidoc/released/icu4c/classicu_1_1ChoiceFormat.html#details
  							pattern: /^(\s*,\s*choice\s*,\s*)\S(?:[\s\S]*\S)?/,
  							lookbehind: true,
  							inside: {
  								'punctuation': /\|/,
  								'range': {
  									pattern: /^(\s*)[+-]?(?:\d+(?:\.\d*)?|\u221e)\s*[<#\u2264]/,
  									lookbehind: true,
  									inside: {
  										'operator': /[<#\u2264]/,
  										'number': /\S+/
  									}
  								},
  								rest: null // see below
  							}
  						},
  						'plural-style': {
  							// https://unicode-org.github.io/icu-docs/apidoc/released/icu4j/com/ibm/icu/text/PluralFormat.html#:~:text=Patterns%20and%20Their%20Interpretation
  							pattern: /^(\s*,\s*(?:plural|selectordinal)\s*,\s*)\S(?:[\s\S]*\S)?/,
  							lookbehind: true,
  							inside: {
  								'offset': /^offset:\s*\d+/,
  								'nested-message': nestedMessage,
  								'selector': {
  									pattern: /=\d+|[^{}:=,\s]+/,
  									inside: {
  										'keyword': /^(?:few|many|one|other|two|zero)$/
  									}
  								}
  							}
  						},
  						'select-style': {
  							// https://unicode-org.github.io/icu-docs/apidoc/released/icu4j/com/ibm/icu/text/SelectFormat.html#:~:text=Patterns%20and%20Their%20Interpretation
  							pattern: /^(\s*,\s*select\s*,\s*)\S(?:[\s\S]*\S)?/,
  							lookbehind: true,
  							inside: {
  								'nested-message': nestedMessage,
  								'selector': {
  									pattern: /[^{}:=,\s]+/,
  									inside: {
  										'keyword': /^other$/
  									}
  								}
  							}
  						},
  						'keyword': /\b(?:choice|plural|select|selectordinal)\b/,
  						'arg-type': {
  							pattern: /\b(?:date|duration|number|ordinal|spellout|time)\b/,
  							alias: 'keyword'
  						},
  						'arg-skeleton': {
  							pattern: /(,\s*)::[^{}:=,\s]+/,
  							lookbehind: true
  						},
  						'arg-style': {
  							pattern: /(,\s*)(?:currency|full|integer|long|medium|percent|short)(?=\s*$)/,
  							lookbehind: true
  						},
  						'arg-style-text': {
  							pattern: RegExp(/(^\s*,\s*(?=\S))/.source + nested(/(?:[^{}']|'[^']*'|\{(?:<SELF>)?\})+/.source, 8) + '$'),
  							lookbehind: true,
  							alias: 'string'
  						},
  						'punctuation': /,/
  					}
  				},
  				'argument-delimiter': {
  					pattern: /./,
  					alias: 'operator'
  				}
  			}
  		},
  		'escape': escape,
  		'string': string
  	};
  
  	nestedMessage.inside.message.inside = Prism.languages['icu-message-format'];
  	Prism.languages['icu-message-format'].argument.inside.content.inside['choice-style'].inside.rest = Prism.languages['icu-message-format'];
  
  }(Prism));
  

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