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| /*
| Language: Haskell
| Author: Jeremy Hull <sourdrums@gmail.com>
| Contributors: Zena Treep <zena.treep@gmail.com>
| Website: https://www.haskell.org
| Category: functional
| */
|
| function haskell(hljs) {
| const COMMENT = {
| variants: [
| hljs.COMMENT('--', '$'),
| hljs.COMMENT(
| /\{-/,
| /-\}/,
| {
| contains: ['self']
| }
| )
| ]
| };
|
| const PRAGMA = {
| className: 'meta',
| begin: /\{-#/,
| end: /#-\}/
| };
|
| const PREPROCESSOR = {
| className: 'meta',
| begin: '^#',
| end: '$'
| };
|
| const CONSTRUCTOR = {
| className: 'type',
| begin: '\\b[A-Z][\\w\']*', // TODO: other constructors (build-in, infix).
| relevance: 0
| };
|
| const LIST = {
| begin: '\\(',
| end: '\\)',
| illegal: '"',
| contains: [
| PRAGMA,
| PREPROCESSOR,
| {
| className: 'type',
| begin: '\\b[A-Z][\\w]*(\\((\\.\\.|,|\\w+)\\))?'
| },
| hljs.inherit(hljs.TITLE_MODE, {
| begin: '[_a-z][\\w\']*'
| }),
| COMMENT
| ]
| };
|
| const RECORD = {
| begin: /\{/,
| end: /\}/,
| contains: LIST.contains
| };
|
| return {
| name: 'Haskell',
| aliases: ['hs'],
| keywords:
| 'let in if then else case of where do module import hiding ' +
| 'qualified type data newtype deriving class instance as default ' +
| 'infix infixl infixr foreign export ccall stdcall cplusplus ' +
| 'jvm dotnet safe unsafe family forall mdo proc rec',
| contains: [
| // Top-level constructions.
| {
| beginKeywords: 'module',
| end: 'where',
| keywords: 'module where',
| contains: [
| LIST,
| COMMENT
| ],
| illegal: '\\W\\.|;'
| },
| {
| begin: '\\bimport\\b',
| end: '$',
| keywords: 'import qualified as hiding',
| contains: [
| LIST,
| COMMENT
| ],
| illegal: '\\W\\.|;'
| },
| {
| className: 'class',
| begin: '^(\\s*)?(class|instance)\\b',
| end: 'where',
| keywords: 'class family instance where',
| contains: [
| CONSTRUCTOR,
| LIST,
| COMMENT
| ]
| },
| {
| className: 'class',
| begin: '\\b(data|(new)?type)\\b',
| end: '$',
| keywords: 'data family type newtype deriving',
| contains: [
| PRAGMA,
| CONSTRUCTOR,
| LIST,
| RECORD,
| COMMENT
| ]
| },
| {
| beginKeywords: 'default',
| end: '$',
| contains: [
| CONSTRUCTOR,
| LIST,
| COMMENT
| ]
| },
| {
| beginKeywords: 'infix infixl infixr',
| end: '$',
| contains: [
| hljs.C_NUMBER_MODE,
| COMMENT
| ]
| },
| {
| begin: '\\bforeign\\b',
| end: '$',
| keywords: 'foreign import export ccall stdcall cplusplus jvm ' +
| 'dotnet safe unsafe',
| contains: [
| CONSTRUCTOR,
| hljs.QUOTE_STRING_MODE,
| COMMENT
| ]
| },
| {
| className: 'meta',
| begin: '#!\\/usr\\/bin\\/env\ runhaskell',
| end: '$'
| },
| // "Whitespaces".
| PRAGMA,
| PREPROCESSOR,
|
| // Literals and names.
|
| // TODO: characters.
| hljs.QUOTE_STRING_MODE,
| hljs.C_NUMBER_MODE,
| CONSTRUCTOR,
| hljs.inherit(hljs.TITLE_MODE, {
| begin: '^[_a-z][\\w\']*'
| }),
| COMMENT,
| { // No markup, relevance booster
| begin: '->|<-'
| }
| ]
| };
| }
|
| module.exports = haskell;
|
|
