monaco-editor/src/typescript/typescript.ts

/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the MIT License. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/

'use strict';

import IRichLanguageConfiguration = monaco.languages.LanguageConfiguration;
import ILanguage = monaco.languages.IMonarchLanguage;

// Allow for running under nodejs/requirejs in tests
const _monaco: typeof monaco = (typeof monaco === 'undefined' ? (<any>self).monaco : monaco);

export const conf: IRichLanguageConfiguration = {
	wordPattern: /(-?\d*\.\d\w*)|([^\`\~\!\@\#\%\^\&\*\(\)\-\=\+\[\{\]\}\\\|\;\:\'\"\,\.\<\>\/\?\s]+)/g,

	comments: {
		lineComment: '//',
		blockComment: ['/*', '*/']
	},

	brackets: [
		['{', '}'],
		['[', ']'],
		['(', ')']
	],

	onEnterRules: [
		{
			// e.g. /** | */
			beforeText: /^\s*\/\*\*(?!\/)([^\*]|\*(?!\/))*$/,
			afterText: /^\s*\*\/$/,
			action: { indentAction: _monaco.languages.IndentAction.IndentOutdent, appendText: ' * ' }
		},
		{
			// e.g. /** ...|
			beforeText: /^\s*\/\*\*(?!\/)([^\*]|\*(?!\/))*$/,
			action: { indentAction: _monaco.languages.IndentAction.None, appendText: ' * ' }
		},
		{
			// e.g.  * ...|
			beforeText: /^(\t|(\ \ ))*\ \*(\ ([^\*]|\*(?!\/))*)?$/,
			action: { indentAction: _monaco.languages.IndentAction.None, appendText: '* ' }
		},
		{
			// e.g.  */|
			beforeText: /^(\t|(\ \ ))*\ \*\/\s*$/,
			action: { indentAction: _monaco.languages.IndentAction.None, removeText: 1 }
		}
	],

	autoClosingPairs: [
		{ open: '{', close: '}' },
		{ open: '[', close: ']' },
		{ open: '(', close: ')' },
		{ open: '"', close: '"', notIn: ['string'] },
		{ open: '\'', close: '\'', notIn: ['string', 'comment'] },
		{ open: '`', close: '`', notIn: ['string', 'comment'] },
		{ open: "/**", close: " */", notIn: ["string"] }
	],

	folding: {
		markers: {
			start: new RegExp("^\\s*//\\s*#?region\\b"),
			end: new RegExp("^\\s*//\\s*#?endregion\\b")
		}
	}
};

export const language = {
	// Set defaultToken to invalid to see what you do not tokenize yet
	defaultToken: 'invalid',
	tokenPostfix: '.ts',

	keywords: [
		// Should match the keys of textToKeywordObj in
		// https://github.com/microsoft/TypeScript/blob/master/src/compiler/scanner.ts
		'abstract', 'any', 'as', 'asserts', 'bigint', 'boolean', 'break', 'case', 'catch',
		'class', 'continue', 'const', 'constructor', 'debugger', 'declare', 'default',
		'delete', 'do', 'else', 'enum', 'export', 'extends', 'false', 'finally', 'for',
		'from', 'function', 'get', 'if', 'implements', 'import', 'in', 'infer',
		'instanceof', 'interface', 'is', 'keyof', 'let', 'module', 'namespace', 'never',
		'new', 'null', 'number', 'object', 'package', 'private', 'protected', 'public',
		'readonly', 'require', 'global', 'return', 'set', 'static', 'string', 'super',
		'switch', 'symbol', 'this', 'throw', 'true', 'try', 'type', 'typeof', 'undefined',
		'unique', 'unknown', 'var', 'void', 'while', 'with', 'yield', 'async', 'await', 'of'
	],

	operators: [
		'<=', '>=', '==', '!=', '===', '!==', '=>', '+', '-', '**',
		'*', '/', '%', '++', '--', '<<', '</', '>>', '>>>', '&',
		'|', '^', '!', '~', '&&', '||', '??', '?', ':', '=', '+=', '-=',
		'*=', '**=', '/=', '%=', '<<=', '>>=', '>>>=', '&=', '|=',
		'^=', '@',
	],

	// we include these common regular expressions
	symbols: /[=><!~?:&|+\-*\/\^%]+/,
	escapes: /\\(?:[abfnrtv\\"']|x[0-9A-Fa-f]{1,4}|u[0-9A-Fa-f]{4}|U[0-9A-Fa-f]{8})/,
	digits: /\d+(_+\d+)*/,
	octaldigits: /[0-7]+(_+[0-7]+)*/,
	binarydigits: /[0-1]+(_+[0-1]+)*/,
	hexdigits: /[[0-9a-fA-F]+(_+[0-9a-fA-F]+)*/,

	regexpctl: /[(){}\[\]\$\^|\-*+?\.]/,
	regexpesc: /\\(?:[bBdDfnrstvwWn0\\\/]|@regexpctl|c[A-Z]|x[0-9a-fA-F]{2}|u[0-9a-fA-F]{4})/,

	// The main tokenizer for our languages
	tokenizer: {
		root: [
			[/[{}]/, 'delimiter.bracket'],
			{ include: 'common' }
		],

		common: [
			// identifiers and keywords
			[/[a-z_$][\w$]*/, {
				cases: {
					'@keywords': 'keyword',
					'@default': 'identifier'
				}
			}],
			[/[A-Z][\w\$]*/, 'type.identifier'],  // to show class names nicely
			// [/[A-Z][\w\$]*/, 'identifier'],

			// whitespace
			{ include: '@whitespace' },

			// regular expression: ensure it is terminated before beginning (otherwise it is an opeator)
			[/\/(?=([^\\\/]|\\.)+\/([gimsuy]*)(\s*)(\.|;|,|\)|\]|\}|$))/, { token: 'regexp', bracket: '@open', next: '@regexp' }],

			// delimiters and operators
			[/[()\[\]]/, '@brackets'],
			[/[<>](?!@symbols)/, '@brackets'],
			[/!(?=([^=]|$))/, 'delimiter'],
			[/@symbols/, {
				cases: {
					'@operators': 'delimiter',
					'@default': ''
				}
			}],

			// numbers
			[/(@digits)[eE]([\-+]?(@digits))?/, 'number.float'],
			[/(@digits)\.(@digits)([eE][\-+]?(@digits))?/, 'number.float'],
			[/0[xX](@hexdigits)n?/, 'number.hex'],
			[/0[oO]?(@octaldigits)n?/, 'number.octal'],
			[/0[bB](@binarydigits)n?/, 'number.binary'],
			[/(@digits)n?/, 'number'],

			// delimiter: after number because of .\d floats
			[/[;,.]/, 'delimiter'],

			// strings
			[/"([^"\\]|\\.)*$/, 'string.invalid'],  // non-teminated string
			[/'([^'\\]|\\.)*$/, 'string.invalid'],  // non-teminated string
			[/"/, 'string', '@string_double'],
			[/'/, 'string', '@string_single'],
			[/`/, 'string', '@string_backtick'],
		],

		whitespace: [
			[/[ \t\r\n]+/, ''],
			[/\/\*\*(?!\/)/, 'comment.doc', '@jsdoc'],
			[/\/\*/, 'comment', '@comment'],
			[/\/\/.*$/, 'comment'],
		],

		comment: [
			[/[^\/*]+/, 'comment'],
			[/\*\//, 'comment', '@pop'],
			[/[\/*]/, 'comment']
		],

		jsdoc: [
			[/[^\/*]+/, 'comment.doc'],
			[/\*\//, 'comment.doc', '@pop'],
			[/[\/*]/, 'comment.doc']
		],

		// We match regular expression quite precisely
		regexp: [
			[/(\{)(\d+(?:,\d*)?)(\})/, ['regexp.escape.control', 'regexp.escape.control', 'regexp.escape.control']],
			[/(\[)(\^?)(?=(?:[^\]\\\/]|\\.)+)/, ['regexp.escape.control', { token: 'regexp.escape.control', next: '@regexrange' }]],
			[/(\()(\?:|\?=|\?!)/, ['regexp.escape.control', 'regexp.escape.control']],
			[/[()]/, 'regexp.escape.control'],
			[/@regexpctl/, 'regexp.escape.control'],
			[/[^\\\/]/, 'regexp'],
			[/@regexpesc/, 'regexp.escape'],
			[/\\\./, 'regexp.invalid'],
			[/(\/)([gimsuy]*)/, [{ token: 'regexp', bracket: '@close', next: '@pop' }, 'keyword.other']],
		],

		regexrange: [
			[/-/, 'regexp.escape.control'],
			[/\^/, 'regexp.invalid'],
			[/@regexpesc/, 'regexp.escape'],
			[/[^\]]/, 'regexp'],
			[/\]/, { token: 'regexp.escape.control', next: '@pop', bracket: '@close' }]
		],

		string_double: [
			[/[^\\"]+/, 'string'],
			[/@escapes/, 'string.escape'],
			[/\\./, 'string.escape.invalid'],
			[/"/, 'string', '@pop']
		],

		string_single: [
			[/[^\\']+/, 'string'],
			[/@escapes/, 'string.escape'],
			[/\\./, 'string.escape.invalid'],
			[/'/, 'string', '@pop']
		],

		string_backtick: [
			[/\$\{/, { token: 'delimiter.bracket', next: '@bracketCounting' }],
			[/[^\\`$]+/, 'string'],
			[/@escapes/, 'string.escape'],
			[/\\./, 'string.escape.invalid'],
			[/`/, 'string', '@pop']
		],

		bracketCounting: [
			[/\{/, 'delimiter.bracket', '@bracketCounting'],
			[/\}/, 'delimiter.bracket', '@pop'],
			{ include: 'common' }
		],
	},
};