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| /*
| Language: YAML
| Description: Yet Another Markdown Language
| Author: Stefan Wienert <stwienert@gmail.com>
| Contributors: Carl Baxter <carl@cbax.tech>
| Requires: ruby.js
| Website: https://yaml.org
| Category: common, config
| */
| function yaml(hljs) {
| var LITERALS = 'true false yes no null';
|
| // YAML spec allows non-reserved URI characters in tags.
| var URI_CHARACTERS = '[\\w#;/?:@&=+$,.~*\'()[\\]]+';
|
| // Define keys as starting with a word character
| // ...containing word chars, spaces, colons, forward-slashes, hyphens and periods
| // ...and ending with a colon followed immediately by a space, tab or newline.
| // The YAML spec allows for much more than this, but this covers most use-cases.
| var KEY = {
| className: 'attr',
| variants: [
| { begin: '\\w[\\w :\\/.-]*:(?=[ \t]|$)' },
| { begin: '"\\w[\\w :\\/.-]*":(?=[ \t]|$)' }, // double quoted keys
| { begin: '\'\\w[\\w :\\/.-]*\':(?=[ \t]|$)' } // single quoted keys
| ]
| };
|
| var TEMPLATE_VARIABLES = {
| className: 'template-variable',
| variants: [
| { begin: /\{\{/, end: /\}\}/ }, // jinja templates Ansible
| { begin: /%\{/, end: /\}/ } // Ruby i18n
| ]
| };
| var STRING = {
| className: 'string',
| relevance: 0,
| variants: [
| { begin: /'/, end: /'/ },
| { begin: /"/, end: /"/ },
| { begin: /\S+/ }
| ],
| contains: [
| hljs.BACKSLASH_ESCAPE,
| TEMPLATE_VARIABLES
| ]
| };
|
| // Strings inside of value containers (objects) can't contain braces,
| // brackets, or commas
| var CONTAINER_STRING = hljs.inherit(STRING, {
| variants: [
| { begin: /'/, end: /'/ },
| { begin: /"/, end: /"/ },
| { begin: /[^\s,{}[\]]+/ }
| ]
| });
|
| var DATE_RE = '[0-9]{4}(-[0-9][0-9]){0,2}';
| var TIME_RE = '([Tt \\t][0-9][0-9]?(:[0-9][0-9]){2})?';
| var FRACTION_RE = '(\\.[0-9]*)?';
| var ZONE_RE = '([ \\t])*(Z|[-+][0-9][0-9]?(:[0-9][0-9])?)?';
| var TIMESTAMP = {
| className: 'number',
| begin: '\\b' + DATE_RE + TIME_RE + FRACTION_RE + ZONE_RE + '\\b'
| };
|
| var VALUE_CONTAINER = {
| end: ',',
| endsWithParent: true,
| excludeEnd: true,
| keywords: LITERALS,
| relevance: 0
| };
| var OBJECT = {
| begin: /\{/,
| end: /\}/,
| contains: [VALUE_CONTAINER],
| illegal: '\\n',
| relevance: 0
| };
| var ARRAY = {
| begin: '\\[',
| end: '\\]',
| contains: [VALUE_CONTAINER],
| illegal: '\\n',
| relevance: 0
| };
|
| var MODES = [
| KEY,
| {
| className: 'meta',
| begin: '^---\\s*$',
| relevance: 10
| },
| { // multi line string
| // Blocks start with a | or > followed by a newline
| //
| // Indentation of subsequent lines must be the same to
| // be considered part of the block
| className: 'string',
| begin: '[\\|>]([1-9]?[+-])?[ ]*\\n( +)[^ ][^\\n]*\\n(\\2[^\\n]+\\n?)*'
| },
| { // Ruby/Rails erb
| begin: '<%[%=-]?',
| end: '[%-]?%>',
| subLanguage: 'ruby',
| excludeBegin: true,
| excludeEnd: true,
| relevance: 0
| },
| { // named tags
| className: 'type',
| begin: '!\\w+!' + URI_CHARACTERS
| },
| // https://yaml.org/spec/1.2/spec.html#id2784064
| { // verbatim tags
| className: 'type',
| begin: '!<' + URI_CHARACTERS + ">"
| },
| { // primary tags
| className: 'type',
| begin: '!' + URI_CHARACTERS
| },
| { // secondary tags
| className: 'type',
| begin: '!!' + URI_CHARACTERS
| },
| { // fragment id &ref
| className: 'meta',
| begin: '&' + hljs.UNDERSCORE_IDENT_RE + '$'
| },
| { // fragment reference *ref
| className: 'meta',
| begin: '\\*' + hljs.UNDERSCORE_IDENT_RE + '$'
| },
| { // array listing
| className: 'bullet',
| // TODO: remove |$ hack when we have proper look-ahead support
| begin: '-(?=[ ]|$)',
| relevance: 0
| },
| hljs.HASH_COMMENT_MODE,
| {
| beginKeywords: LITERALS,
| keywords: { literal: LITERALS }
| },
| TIMESTAMP,
| // numbers are any valid C-style number that
| // sit isolated from other words
| {
| className: 'number',
| begin: hljs.C_NUMBER_RE + '\\b',
| relevance: 0
| },
| OBJECT,
| ARRAY,
| STRING
| ];
|
| var VALUE_MODES = [...MODES];
| VALUE_MODES.pop();
| VALUE_MODES.push(CONTAINER_STRING);
| VALUE_CONTAINER.contains = VALUE_MODES;
|
| return {
| name: 'YAML',
| case_insensitive: true,
| aliases: [ 'yml' ],
| contains: MODES
| };
| }
|
| module.exports = yaml;
|
|
