hexo/node_modules/highlight.js/lib/languages/prolog.js

97 lines
1.7 KiB
JavaScript

/*
Language: Prolog
Description: Prolog is a general purpose logic programming language associated with artificial intelligence and computational linguistics.
Author: Raivo Laanemets <raivo@infdot.com>
Website: https://en.wikipedia.org/wiki/Prolog
*/
function prolog(hljs) {
const ATOM = {
begin: /[a-z][A-Za-z0-9_]*/,
relevance: 0
};
const VAR = {
className: 'symbol',
variants: [
{ begin: /[A-Z][a-zA-Z0-9_]*/ },
{ begin: /_[A-Za-z0-9_]*/ }
],
relevance: 0
};
const PARENTED = {
begin: /\(/,
end: /\)/,
relevance: 0
};
const LIST = {
begin: /\[/,
end: /\]/
};
const LINE_COMMENT = {
className: 'comment',
begin: /%/,
end: /$/,
contains: [ hljs.PHRASAL_WORDS_MODE ]
};
const BACKTICK_STRING = {
className: 'string',
begin: /`/,
end: /`/,
contains: [ hljs.BACKSLASH_ESCAPE ]
};
const CHAR_CODE = {
className: 'string', // 0'a etc.
begin: /0'(\\'|.)/
};
const SPACE_CODE = {
className: 'string',
begin: /0'\\s/ // 0'\s
};
const PRED_OP = { // relevance booster
begin: /:-/ };
const inner = [
ATOM,
VAR,
PARENTED,
PRED_OP,
LIST,
LINE_COMMENT,
hljs.C_BLOCK_COMMENT_MODE,
hljs.QUOTE_STRING_MODE,
hljs.APOS_STRING_MODE,
BACKTICK_STRING,
CHAR_CODE,
SPACE_CODE,
hljs.C_NUMBER_MODE
];
PARENTED.contains = inner;
LIST.contains = inner;
return {
name: 'Prolog',
contains: inner.concat([
{ // relevance booster
begin: /\.$/ }
])
};
}
module.exports = prolog;