wren.js
View Options

	/*
	Language: Wren
	Description: Think Smalltalk in a Lua-sized package with a dash of Erlang and wrapped up in a familiar, modern syntax.
	Category: scripting
	Author: @joshgoebel
	Maintainer: @joshgoebel
	Website: https://wren.io/
	*/

	/** @type LanguageFn */
	function wren(hljs) {
	const regex = hljs.regex;
	const IDENT_RE = /[a-zA-Z]\w*/;
	const KEYWORDS = [
	"as",
	"break",
	"class",
	"construct",
	"continue",
	"else",
	"for",
	"foreign",
	"if",
	"import",
	"in",
	"is",
	"return",
	"static",
	"var",
	"while"
	];
	const LITERALS = [
	"true",
	"false",
	"null"
	];
	const LANGUAGE_VARS = [
	"this",
	"super"
	];
	const CORE_CLASSES = [
	"Bool",
	"Class",
	"Fiber",
	"Fn",
	"List",
	"Map",
	"Null",
	"Num",
	"Object",
	"Range",
	"Sequence",
	"String",
	"System"
	];
	const OPERATORS = [
	"-",
	"~",
	/\*/,
	"%",
	/\.\.\./,
	/\.\./,
	/\+/,
	"<<",
	">>",
	">=",
	"<=",
	"<",
	">",
	/\^/,
	/!=/,
	/!/,
	/\bis\b/,
	"==",
	"&&",
	"&",
	/\\|\\|/,
	/\\|/,
	/\?:/,
	"="
	];
	const FUNCTION = {
	relevance: 0,
	match: regex.concat(/\b(?!(if\|while\|for\|else\|super)\b)/, IDENT_RE, /(?=\s*[({])/),
	className: "title.function"
	};
	const FUNCTION_DEFINITION = {
	match: regex.concat(
	regex.either(
	regex.concat(/\b(?!(if\|while\|for\|else\|super)\b)/, IDENT_RE),
	regex.either(...OPERATORS)
	),
	/(?=\s$[^)]+$\s\{)/),
	className: "title.function",
	starts: { contains: [
	{
	begin: /\(/,
	end: /\)/,
	contains: [
	{
	relevance: 0,
	scope: "params",
	match: IDENT_RE
	}
	]
	}
	] }
	};
	const CLASS_DEFINITION = {
	variants: [
	{ match: [
	/class\s+/,
	IDENT_RE,
	/\s+is\s+/,
	IDENT_RE
	] },
	{ match: [
	/class\s+/,
	IDENT_RE
	] }
	],
	scope: {
	2: "title.class",
	4: "title.class.inherited"
	},
	keywords: KEYWORDS
	};

	const OPERATOR = {
	relevance: 0,
	match: regex.either(...OPERATORS),
	className: "operator"
	};

	const TRIPLE_STRING = {
	className: "string",
	begin: /"""/,
	end: /"""/
	};

	const PROPERTY = {
	className: "property",
	begin: regex.concat(/\./, regex.lookahead(IDENT_RE)),
	end: IDENT_RE,
	excludeBegin: true,
	relevance: 0
	};

	const FIELD = {
	relevance: 0,
	match: regex.concat(/\b_/, IDENT_RE),
	scope: "variable"
	};

	// CamelCase
	const CLASS_REFERENCE = {
	relevance: 0,
	match: /\b[A-Z]+[a-z]+([A-Z]+[a-z]+)*/,
	scope: "title.class",
	keywords: { _: CORE_CLASSES }
	};

	// TODO: add custom number modes
	const NUMBER = hljs.C_NUMBER_MODE;

	const SETTER = {
	match: [
	IDENT_RE,
	/\s*/,
	/=/,
	/\s*/,
	/\(/,
	IDENT_RE,
	/\)\s*\{/
	],
	scope: {
	1: "title.function",
	3: "operator",
	6: "params"
	}
	};

	const COMMENT_DOCS = hljs.COMMENT(
	/\/\\/,
	/\*\//,
	{ contains: [
	{
	match: /@[a-z]+/,
	scope: "doctag"
	},
	"self"
	] }
	);
	const SUBST = {
	scope: "subst",
	begin: /%\(/,
	end: /\)/,
	contains: [
	NUMBER,
	CLASS_REFERENCE,
	FUNCTION,
	FIELD,
	OPERATOR
	]
	};
	const STRING = {
	scope: "string",
	begin: /"/,
	end: /"/,
	contains: [
	SUBST,
	{
	scope: "char.escape",
	variants: [
	{ match: /\\\\\|\\["0%abefnrtv]/ },
	{ match: /\\x[0-9A-F]{2}/ },
	{ match: /\\u[0-9A-F]{4}/ },
	{ match: /\\U[0-9A-F]{8}/ }
	]
	}
	]
	};
	SUBST.contains.push(STRING);

	const ALL_KWS = [
	...KEYWORDS,
	...LANGUAGE_VARS,
	...LITERALS
	];
	const VARIABLE = {
	relevance: 0,
	match: regex.concat(
	"\\b(?!",
	ALL_KWS.join("\|"),
	"\\b)",
	/[a-zA-Z_]\w*(?:[?!]\|\b)/
	),
	className: "variable"
	};

	// TODO: reconsider this in the future
	const ATTRIBUTE = {
	// scope: "meta",
	scope: "comment",
	variants: [
	{
	begin: [
	/#!?/,
	/[A-Za-z_]+(?=\()/
	],
	beginScope: {
	// 2: "attr"
	},
	keywords: { literal: LITERALS },
	contains: [
	// NUMBER,
	// VARIABLE
	],
	end: /\)/
	},
	{
	begin: [
	/#!?/,
	/[A-Za-z_]+/
	],
	beginScope: {
	// 2: "attr"
	},
	end: /$/
	}
	]
	};

	return {
	name: "Wren",
	keywords: {
	keyword: KEYWORDS,
	"variable.language": LANGUAGE_VARS,
	literal: LITERALS
	},
	contains: [
	ATTRIBUTE,
	NUMBER,
	STRING,
	TRIPLE_STRING,
	COMMENT_DOCS,
	hljs.C_LINE_COMMENT_MODE,
	hljs.C_BLOCK_COMMENT_MODE,
	CLASS_REFERENCE,
	CLASS_DEFINITION,
	SETTER,
	FUNCTION_DEFINITION,
	FUNCTION,
	OPERATOR,
	FIELD,
	PROPERTY,
	VARIABLE
	]
	};
	}

	module.exports = wren;

File Metadata

Mime Type: text/plain
Expires: Jul 4 2025, 10:19 AM (4 w, 5 d ago)
Storage Engine: blob
Storage Format: Raw Data
Storage Handle: 3347857

wren.js
No OneTemporary
Actions

wren.js
View Options

File Metadata

Event Timeline

wren.jsNo OneTemporaryActions

wren.jsView Options

File Metadata

Event Timeline

wren.js
No OneTemporary
Actions

wren.js
View Options