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/**
* @param {string} value
* @returns {RegExp}
* */
/**
* @param {RegExp | string } re
* @returns {string}
*/
function source(re) {
if (!re) return null;
if (typeof re === "string") return re;
return re.source;
}
/**
* @param {...(RegExp | string) } args
* @returns {string}
*/
function concat(...args) {
const joined = args.map((x) => source(x)).join("");
return joined;
}
/*
Language: AsciiDoc
Requires: xml.js
Author: Dan Allen <dan.j.allen@gmail.com>
Website: http://asciidoc.org
Description: A semantic, text-based document format that can be exported to HTML, DocBook and other backends.
Category: markup
*/
/** @type LanguageFn */
function asciidoc(hljs) {
const HORIZONTAL_RULE = {
begin: '^\'{3,}[ \\t]*$',
relevance: 10
};
const ESCAPED_FORMATTING = [
// escaped constrained formatting marks (i.e., \* \_ or \`)
{
begin: /\\[*_`]/
},
// escaped unconstrained formatting marks (i.e., \\** \\__ or \\``)
// must ignore until the next formatting marks
// this rule might not be 100% compliant with Asciidoctor 2.0 but we are entering undefined behavior territory...
{
begin: /\\\\\*{2}[^\n]*?\*{2}/
},
{
begin: /\\\\_{2}[^\n]*_{2}/
},
{
begin: /\\\\`{2}[^\n]*`{2}/
},
// guard: constrained formatting mark may not be preceded by ":", ";" or
// "}". match these so the constrained rule doesn't see them
{
begin: /[:;}][*_`](?![*_`])/
}
];
const STRONG = [
// inline unconstrained strong (single line)
{
className: 'strong',
begin: /\*{2}([^\n]+?)\*{2}/
},
// inline unconstrained strong (multi-line)
{
className: 'strong',
begin: concat(
/\*\*/,
/((\*(?!\*)|\\[^\n]|[^*\n\\])+\n)+/,
/(\*(?!\*)|\\[^\n]|[^*\n\\])*/,
/\*\*/
),
relevance: 0
},
// inline constrained strong (single line)
{
className: 'strong',
// must not precede or follow a word character
begin: /\B\*(\S|\S[^\n]*?\S)\*(?!\w)/
},
// inline constrained strong (multi-line)
{
className: 'strong',
// must not precede or follow a word character
begin: /\*[^\s]([^\n]+\n)+([^\n]+)\*/
}
];
const EMPHASIS = [
// inline unconstrained emphasis (single line)
{
className: 'emphasis',
begin: /_{2}([^\n]+?)_{2}/
},
// inline unconstrained emphasis (multi-line)
{
className: 'emphasis',
begin: concat(
/__/,
/((_(?!_)|\\[^\n]|[^_\n\\])+\n)+/,
/(_(?!_)|\\[^\n]|[^_\n\\])*/,
/__/
),
relevance: 0
},
// inline constrained emphasis (single line)
{
className: 'emphasis',
// must not precede or follow a word character
begin: /\b_(\S|\S[^\n]*?\S)_(?!\w)/
},
// inline constrained emphasis (multi-line)
{
className: 'emphasis',
// must not precede or follow a word character
begin: /_[^\s]([^\n]+\n)+([^\n]+)_/
},
// inline constrained emphasis using single quote (legacy)
{
className: 'emphasis',
// must not follow a word character or be followed by a single quote or space
begin: '\\B\'(?![\'\\s])',
end: '(\\n{2}|\')',
// allow escaped single quote followed by word char
contains: [{
begin: '\\\\\'\\w',
relevance: 0
}],
relevance: 0
}
];
const ADMONITION = {
className: 'symbol',
begin: '^(NOTE|TIP|IMPORTANT|WARNING|CAUTION):\\s+',
relevance: 10
};
const BULLET_LIST = {
className: 'bullet',
begin: '^(\\*+|-+|\\.+|[^\\n]+?::)\\s+'
};
return {
name: 'AsciiDoc',
aliases: ['adoc'],
contains: [
// block comment
hljs.COMMENT(
'^/{4,}\\n',
'\\n/{4,}$',
// can also be done as...
// '^/{4,}$',
// '^/{4,}$',
{
relevance: 10
}
),
// line comment
hljs.COMMENT(
'^//',
'$',
{
relevance: 0
}
),
// title
{
className: 'title',
begin: '^\\.\\w.*$'
},
// example, admonition & sidebar blocks
{
begin: '^[=\\*]{4,}\\n',
end: '\\n^[=\\*]{4,}$',
relevance: 10
},
// headings
{
className: 'section',
relevance: 10,
variants: [
{
begin: '^(={1,6})[ \t].+?([ \t]\\1)?$'
},
{
begin: '^[^\\[\\]\\n]+?\\n[=\\-~\\^\\+]{2,}$'
}
]
},
// document attributes
{
className: 'meta',
begin: '^:.+?:',
end: '\\s',
excludeEnd: true,
relevance: 10
},
// block attributes
{
className: 'meta',
begin: '^\\[.+?\\]$',
relevance: 0
},
// quoteblocks
{
className: 'quote',
begin: '^_{4,}\\n',
end: '\\n_{4,}$',
relevance: 10
},
// listing and literal blocks
{
className: 'code',
begin: '^[\\-\\.]{4,}\\n',
end: '\\n[\\-\\.]{4,}$',
relevance: 10
},
// passthrough blocks
{
begin: '^\\+{4,}\\n',
end: '\\n\\+{4,}$',
contains: [{
begin: '<',
end: '>',
subLanguage: 'xml',
relevance: 0
}],
relevance: 10
},
BULLET_LIST,
ADMONITION,
...ESCAPED_FORMATTING,
...STRONG,
...EMPHASIS,
// inline smart quotes
{
className: 'string',
variants: [
{
begin: "``.+?''"
},
{
begin: "`.+?'"
}
]
},
// inline unconstrained emphasis
{
className: 'code',
begin: /`{2}/,
end: /(\n{2}|`{2})/
},
// inline code snippets (TODO should get same treatment as strong and emphasis)
{
className: 'code',
begin: '(`.+?`|\\+.+?\\+)',
relevance: 0
},
// indented literal block
{
className: 'code',
begin: '^[ \\t]',
end: '$',
relevance: 0
},
HORIZONTAL_RULE,
// images and links
{
begin: '(link:)?(http|https|ftp|file|irc|image:?):\\S+?\\[[^[]*?\\]',
returnBegin: true,
contains: [
{
begin: '(link|image:?):',
relevance: 0
},
{
className: 'link',
begin: '\\w',
end: '[^\\[]+',
relevance: 0
},
{
className: 'string',
begin: '\\[',
end: '\\]',
excludeBegin: true,
excludeEnd: true,
relevance: 0
}
],
relevance: 10
}
]
};
}
module.exports = asciidoc;