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prism-lisp.js
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prism-lisp.js
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(function (Prism) {
/**
* Functions to construct regular expressions
* e.g. (interactive ... or (interactive)
*
* @param {string} name
* @returns {RegExp}
*/
function simple_form(name) {
return RegExp(/(\()/.source + '(?:' + name + ')' + /(?=[\s\)])/.source);
}
/**
* booleans and numbers
*
* @param {string} pattern
* @returns {RegExp}
*/
function primitive(pattern) {
return RegExp(/([\s([])/.source + '(?:' + pattern + ')' + /(?=[\s)])/.source);
}
// Patterns in regular expressions
// Symbol name. See https://www.gnu.org/software/emacs/manual/html_node/elisp/Symbol-Type.html
// & and : are excluded as they are usually used for special purposes
var symbol = /(?!\d)[-+*/~!@$%^=<>{}\w]+/.source;
// symbol starting with & used in function arguments
var marker = '&' + symbol;
// Open parenthesis for look-behind
var par = '(\\()';
var endpar = '(?=\\))';
// End the pattern with look-ahead space
var space = '(?=\\s)';
var nestedPar = /(?:[^()]|\((?:[^()]|\((?:[^()]|\((?:[^()]|\((?:[^()]|\([^()]*\))*\))*\))*\))*\))*/.source;
var language = {
// Three or four semicolons are considered a heading.
// See https://www.gnu.org/software/emacs/manual/html_node/elisp/Comment-Tips.html
heading: {
pattern: /;;;.*/,
alias: ['comment', 'title']
},
comment: /;.*/,
string: {
pattern: /"(?:[^"\\]|\\.)*"/,
greedy: true,
inside: {
argument: /[-A-Z]+(?=[.,\s])/,
symbol: RegExp('`' + symbol + "'")
}
},
'quoted-symbol': {
pattern: RegExp("#?'" + symbol),
alias: ['variable', 'symbol']
},
'lisp-property': {
pattern: RegExp(':' + symbol),
alias: 'property'
},
splice: {
pattern: RegExp(',@?' + symbol),
alias: ['symbol', 'variable']
},
keyword: [
{
pattern: RegExp(
par +
'(?:and|(?:cl-)?letf|cl-loop|cond|cons|error|if|(?:lexical-)?let\\*?|message|not|null|or|provide|require|setq|unless|use-package|when|while)' +
space
),
lookbehind: true
},
{
pattern: RegExp(
par + '(?:append|by|collect|concat|do|finally|for|in|return)' + space
),
lookbehind: true
},
],
declare: {
pattern: simple_form(/declare/.source),
lookbehind: true,
alias: 'keyword'
},
interactive: {
pattern: simple_form(/interactive/.source),
lookbehind: true,
alias: 'keyword'
},
boolean: {
pattern: primitive(/nil|t/.source),
lookbehind: true
},
number: {
pattern: primitive(/[-+]?\d+(?:\.\d*)?/.source),
lookbehind: true
},
defvar: {
pattern: RegExp(par + 'def(?:const|custom|group|var)\\s+' + symbol),
lookbehind: true,
inside: {
keyword: /^def[a-z]+/,
variable: RegExp(symbol)
}
},
defun: {
pattern: RegExp(par + /(?:cl-)?(?:defmacro|defun\*?)\s+/.source + symbol + /\s+\(/.source + nestedPar + /\)/.source),
lookbehind: true,
greedy: true,
inside: {
keyword: /^(?:cl-)?def\S+/,
// See below, this property needs to be defined later so that it can
// reference the language object.
arguments: null,
function: {
pattern: RegExp('(^\\s)' + symbol),
lookbehind: true
},
punctuation: /[()]/
}
},
lambda: {
pattern: RegExp(par + 'lambda\\s+\\(\\s*(?:&?' + symbol + '(?:\\s+&?' + symbol + ')*\\s*)?\\)'),
lookbehind: true,
greedy: true,
inside: {
keyword: /^lambda/,
// See below, this property needs to be defined later so that it can
// reference the language object.
arguments: null,
punctuation: /[()]/
}
},
car: {
pattern: RegExp(par + symbol),
lookbehind: true
},
punctuation: [
// open paren, brackets, and close paren
/(?:['`,]?\(|[)\[\]])/,
// cons
{
pattern: /(\s)\.(?=\s)/,
lookbehind: true
},
]
};
var arg = {
'lisp-marker': RegExp(marker),
'varform': {
pattern: RegExp(/\(/.source + symbol + /\s+(?=\S)/.source + nestedPar + /\)/.source),
inside: language
},
'argument': {
pattern: RegExp(/(^|[\s(])/.source + symbol),
lookbehind: true,
alias: 'variable'
},
rest: language
};
var forms = '\\S+(?:\\s+\\S+)*';
var arglist = {
pattern: RegExp(par + nestedPar + endpar),
lookbehind: true,
inside: {
'rest-vars': {
pattern: RegExp('&(?:body|rest)\\s+' + forms),
inside: arg
},
'other-marker-vars': {
pattern: RegExp('&(?:aux|optional)\\s+' + forms),
inside: arg
},
keys: {
pattern: RegExp('&key\\s+' + forms + '(?:\\s+&allow-other-keys)?'),
inside: arg
},
argument: {
pattern: RegExp(symbol),
alias: 'variable'
},
punctuation: /[()]/
}
};
language['lambda'].inside.arguments = arglist;
language['defun'].inside.arguments = Prism.util.clone(arglist);
language['defun'].inside.arguments.inside.sublist = arglist;
Prism.languages.lisp = language;
Prism.languages.elisp = language;
Prism.languages.emacs = language;
Prism.languages['emacs-lisp'] = language;
}(Prism));