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| /*
| Language: Elm
| Author: Janis Voigtlaender <janis.voigtlaender@gmail.com>
| Website: https://elm-lang.org
| Category: functional
| */
|
| /** @type LanguageFn */
| function elm(hljs) {
| const COMMENT = {
| variants: [
| hljs.COMMENT('--', '$'),
| hljs.COMMENT(
| /\{-/,
| /-\}/,
| {
| contains: ['self']
| }
| )
| ]
| };
|
| const CONSTRUCTOR = {
| className: 'type',
| begin: '\\b[A-Z][\\w\']*', // TODO: other constructors (built-in, infix).
| relevance: 0
| };
|
| const LIST = {
| begin: '\\(',
| end: '\\)',
| illegal: '"',
| contains: [
| {
| className: 'type',
| begin: '\\b[A-Z][\\w]*(\\((\\.\\.|,|\\w+)\\))?'
| },
| COMMENT
| ]
| };
|
| const RECORD = {
| begin: /\{/,
| end: /\}/,
| contains: LIST.contains
| };
|
| const CHARACTER = {
| className: 'string',
| begin: '\'\\\\?.',
| end: '\'',
| illegal: '.'
| };
|
| return {
| name: 'Elm',
| keywords:
| 'let in if then else case of where module import exposing ' +
| 'type alias as infix infixl infixr port effect command subscription',
| contains: [
|
| // Top-level constructions.
|
| {
| beginKeywords: 'port effect module',
| end: 'exposing',
| keywords: 'port effect module where command subscription exposing',
| contains: [
| LIST,
| COMMENT
| ],
| illegal: '\\W\\.|;'
| },
| {
| begin: 'import',
| end: '$',
| keywords: 'import as exposing',
| contains: [
| LIST,
| COMMENT
| ],
| illegal: '\\W\\.|;'
| },
| {
| begin: 'type',
| end: '$',
| keywords: 'type alias',
| contains: [
| CONSTRUCTOR,
| LIST,
| RECORD,
| COMMENT
| ]
| },
| {
| beginKeywords: 'infix infixl infixr',
| end: '$',
| contains: [
| hljs.C_NUMBER_MODE,
| COMMENT
| ]
| },
| {
| begin: 'port',
| end: '$',
| keywords: 'port',
| contains: [COMMENT]
| },
|
| // Literals and names.
|
| CHARACTER,
| hljs.QUOTE_STRING_MODE,
| hljs.C_NUMBER_MODE,
| CONSTRUCTOR,
| hljs.inherit(hljs.TITLE_MODE, {
| begin: '^[_a-z][\\w\']*'
| }),
| COMMENT,
|
| {
| begin: '->|<-'
| } // No markup, relevance booster
| ],
| illegal: /;/
| };
| }
|
| module.exports = elm;
|
|
