mirror of
https://github.com/microsoft/monaco-editor.git
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631 lines
17 KiB
TypeScript
631 lines
17 KiB
TypeScript
/*---------------------------------------------------------------------------------------------
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* Copyright (c) Microsoft Corporation. All rights reserved.
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* Licensed under the MIT License. See License.txt in the project root for license information.
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*--------------------------------------------------------------------------------------------*/
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import type { languages } from '../fillers/monaco-editor-core';
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export const conf: languages.LanguageConfiguration = {
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comments: {
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lineComment: '#'
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},
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brackets: [
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['{', '}'],
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['[', ']'],
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['(', ')']
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],
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surroundingPairs: [
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{ open: '{', close: '}' },
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{ open: '[', close: ']' },
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{ open: '(', close: ')' },
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{ open: "'", close: "'" },
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{ open: '"', close: '"' }
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],
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autoClosingPairs: [
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{ open: "'", close: "'", notIn: ['string', 'comment'] },
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{ open: '"', close: '"', notIn: ['comment'] },
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{ open: '"""', close: '"""' },
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{ open: '`', close: '`', notIn: ['string', 'comment'] },
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{ open: '(', close: ')' },
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{ open: '{', close: '}' },
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{ open: '[', close: ']' },
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{ open: '<<', close: '>>' }
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],
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indentationRules: {
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increaseIndentPattern: /^\s*(after|else|catch|rescue|fn|[^#]*(do|<\-|\->|\{|\[|\=))\s*$/,
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decreaseIndentPattern: /^\s*((\}|\])\s*$|(after|else|catch|rescue|end)\b)/
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}
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};
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/**
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* A Monarch lexer for the Elixir language.
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*
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* References:
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*
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* * Monarch documentation - https://microsoft.github.io/monaco-editor/monarch.html
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* * Elixir lexer - https://github.com/elixir-makeup/makeup_elixir/blob/master/lib/makeup/lexers/elixir_lexer.ex
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* * TextMate lexer (elixir-tmbundle) - https://github.com/elixir-editors/elixir-tmbundle/blob/master/Syntaxes/Elixir.tmLanguage
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* * TextMate lexer (vscode-elixir-ls) - https://github.com/elixir-lsp/vscode-elixir-ls/blob/master/syntaxes/elixir.json
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*/
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export const language = <languages.IMonarchLanguage>{
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defaultToken: 'source',
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tokenPostfix: '.elixir',
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brackets: [
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{ open: '[', close: ']', token: 'delimiter.square' },
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{ open: '(', close: ')', token: 'delimiter.parenthesis' },
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{ open: '{', close: '}', token: 'delimiter.curly' },
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{ open: '<<', close: '>>', token: 'delimiter.angle.special' }
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],
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// Below are lists/regexps to which we reference later.
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declarationKeywords: [
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'def',
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'defp',
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'defn',
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'defnp',
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'defguard',
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'defguardp',
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'defmacro',
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'defmacrop',
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'defdelegate',
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'defcallback',
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'defmacrocallback',
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'defmodule',
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'defprotocol',
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'defexception',
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'defimpl',
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'defstruct'
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],
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operatorKeywords: ['and', 'in', 'not', 'or', 'when'],
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namespaceKeywords: ['alias', 'import', 'require', 'use'],
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otherKeywords: [
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'after',
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'case',
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'catch',
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'cond',
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'do',
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'else',
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'end',
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'fn',
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'for',
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'if',
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'quote',
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'raise',
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'receive',
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'rescue',
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'super',
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'throw',
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'try',
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'unless',
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'unquote_splicing',
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'unquote',
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'with'
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],
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constants: ['true', 'false', 'nil'],
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nameBuiltin: ['__MODULE__', '__DIR__', '__ENV__', '__CALLER__', '__STACKTRACE__'],
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// Matches any of the operator names:
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// <<< >>> ||| &&& ^^^ ~~~ === !== ~>> <~> |~> <|> == != <= >= && || \\ <> ++ -- |> =~ -> <- ~> <~ :: .. = < > + - * / | . ^ & !
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operator: /-[->]?|!={0,2}|\*|\/|\\\\|&{1,3}|\.\.?|\^(?:\^\^)?|\+\+?|<(?:-|<<|=|>|\|>|~>?)?|=~|={1,3}|>(?:=|>>)?|\|~>|\|>|\|{1,3}|~>>?|~~~|::/,
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// See https://hexdocs.pm/elixir/syntax-reference.html#variables
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variableName: /[a-z_][a-zA-Z0-9_]*[?!]?/,
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// See https://hexdocs.pm/elixir/syntax-reference.html#atoms
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atomName: /[a-zA-Z_][a-zA-Z0-9_@]*[?!]?|@specialAtomName|@operator/,
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specialAtomName: /\.\.\.|<<>>|%\{\}|%|\{\}/,
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aliasPart: /[A-Z][a-zA-Z0-9_]*/,
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moduleName: /@aliasPart(?:\.@aliasPart)*/,
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// Sigil pairs are: """ """, ''' ''', " ", ' ', / /, | |, < >, { }, [ ], ( )
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sigilSymmetricDelimiter: /"""|'''|"|'|\/|\|/,
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sigilStartDelimiter: /@sigilSymmetricDelimiter|<|\{|\[|\(/,
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sigilEndDelimiter: /@sigilSymmetricDelimiter|>|\}|\]|\)/,
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decimal: /\d(?:_?\d)*/,
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hex: /[0-9a-fA-F](_?[0-9a-fA-F])*/,
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octal: /[0-7](_?[0-7])*/,
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binary: /[01](_?[01])*/,
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// See https://hexdocs.pm/elixir/master/String.html#module-escape-characters
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escape: /\\u[0-9a-fA-F]{4}|\\x[0-9a-fA-F]{2}|\\./,
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// The keys below correspond to tokenizer states.
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// We start from the root state and match against its rules
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// until we explicitly transition into another state.
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// The `include` simply brings in all operations from the given state
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// and is useful for improving readability.
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tokenizer: {
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root: [
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{ include: '@whitespace' },
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{ include: '@comments' },
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// Keywords start as either an identifier or a string,
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// but end with a : so it's important to match this first.
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{ include: '@keywordsShorthand' },
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{ include: '@numbers' },
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{ include: '@identifiers' },
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{ include: '@strings' },
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{ include: '@atoms' },
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{ include: '@sigils' },
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{ include: '@attributes' },
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{ include: '@symbols' }
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],
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// Whitespace
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whitespace: [[/\s+/, 'white']],
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// Comments
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comments: [[/(#)(.*)/, ['comment.punctuation', 'comment']]],
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// Keyword list shorthand
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keywordsShorthand: [
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[/(@atomName)(:)/, ['constant', 'constant.punctuation']],
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// Use positive look-ahead to ensure the string is followed by :
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// and should be considered a keyword.
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[
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/"(?=([^"]|#\{.*?\}|\\")*":)/,
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{ token: 'constant.delimiter', next: '@doubleQuotedStringKeyword' }
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],
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[
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/'(?=([^']|#\{.*?\}|\\')*':)/,
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{ token: 'constant.delimiter', next: '@singleQuotedStringKeyword' }
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]
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],
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doubleQuotedStringKeyword: [
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[/":/, { token: 'constant.delimiter', next: '@pop' }],
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{ include: '@stringConstantContentInterpol' }
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],
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singleQuotedStringKeyword: [
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[/':/, { token: 'constant.delimiter', next: '@pop' }],
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{ include: '@stringConstantContentInterpol' }
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],
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// Numbers
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numbers: [
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[/0b@binary/, 'number.binary'],
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[/0o@octal/, 'number.octal'],
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[/0x@hex/, 'number.hex'],
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[/@decimal\.@decimal([eE]-?@decimal)?/, 'number.float'],
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[/@decimal/, 'number']
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],
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// Identifiers
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identifiers: [
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// Tokenize identifier name in function-like definitions.
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// Note: given `def a + b, do: nil`, `a` is not a function name,
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// so we use negative look-ahead to ensure there's no operator.
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[
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/\b(defp?|defnp?|defmacrop?|defguardp?|defdelegate)(\s+)(@variableName)(?!\s+@operator)/,
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[
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'keyword.declaration',
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'white',
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{
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cases: {
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unquote: 'keyword',
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'@default': 'function'
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}
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}
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]
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],
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// Tokenize function calls
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[
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// In-scope call - an identifier followed by ( or .(
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/(@variableName)(?=\s*\.?\s*\()/,
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{
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cases: {
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// Tokenize as keyword in cases like `if(..., do: ..., else: ...)`
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'@declarationKeywords': 'keyword.declaration',
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'@namespaceKeywords': 'keyword',
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'@otherKeywords': 'keyword',
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'@default': 'function.call'
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}
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}
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],
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[
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// Referencing function in a module
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/(@moduleName)(\s*)(\.)(\s*)(@variableName)/,
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['type.identifier', 'white', 'operator', 'white', 'function.call']
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],
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[
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// Referencing function in an Erlang module
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/(:)(@atomName)(\s*)(\.)(\s*)(@variableName)/,
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['constant.punctuation', 'constant', 'white', 'operator', 'white', 'function.call']
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],
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[
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// Piping into a function (tokenized separately as it may not have parentheses)
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/(\|>)(\s*)(@variableName)/,
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[
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'operator',
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'white',
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{
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cases: {
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'@otherKeywords': 'keyword',
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'@default': 'function.call'
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}
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}
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]
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],
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[
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// Function reference passed to another function
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/(&)(\s*)(@variableName)/,
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['operator', 'white', 'function.call']
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],
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// Language keywords, builtins, constants and variables
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[
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/@variableName/,
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{
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cases: {
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'@declarationKeywords': 'keyword.declaration',
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'@operatorKeywords': 'keyword.operator',
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'@namespaceKeywords': 'keyword',
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'@otherKeywords': 'keyword',
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'@constants': 'constant.language',
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'@nameBuiltin': 'variable.language',
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'_.*': 'comment.unused',
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'@default': 'identifier'
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}
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}
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],
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// Module names
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[/@moduleName/, 'type.identifier']
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],
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// Strings
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strings: [
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[/"""/, { token: 'string.delimiter', next: '@doubleQuotedHeredoc' }],
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[/'''/, { token: 'string.delimiter', next: '@singleQuotedHeredoc' }],
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[/"/, { token: 'string.delimiter', next: '@doubleQuotedString' }],
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[/'/, { token: 'string.delimiter', next: '@singleQuotedString' }]
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],
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doubleQuotedHeredoc: [
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[/"""/, { token: 'string.delimiter', next: '@pop' }],
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{ include: '@stringContentInterpol' }
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],
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singleQuotedHeredoc: [
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[/'''/, { token: 'string.delimiter', next: '@pop' }],
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{ include: '@stringContentInterpol' }
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],
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doubleQuotedString: [
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[/"/, { token: 'string.delimiter', next: '@pop' }],
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{ include: '@stringContentInterpol' }
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],
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singleQuotedString: [
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[/'/, { token: 'string.delimiter', next: '@pop' }],
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{ include: '@stringContentInterpol' }
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],
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// Atoms
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atoms: [
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[/(:)(@atomName)/, ['constant.punctuation', 'constant']],
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[/:"/, { token: 'constant.delimiter', next: '@doubleQuotedStringAtom' }],
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[/:'/, { token: 'constant.delimiter', next: '@singleQuotedStringAtom' }]
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],
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doubleQuotedStringAtom: [
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[/"/, { token: 'constant.delimiter', next: '@pop' }],
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{ include: '@stringConstantContentInterpol' }
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],
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singleQuotedStringAtom: [
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[/'/, { token: 'constant.delimiter', next: '@pop' }],
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{ include: '@stringConstantContentInterpol' }
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],
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// Sigils
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// See https://elixir-lang.org/getting-started/sigils.html
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// Sigils allow for typing values using their textual representation.
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// All sigils start with ~ followed by a letter indicating sigil type
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// and then a delimiter pair enclosing the textual representation.
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// Optional modifiers are allowed after the closing delimiter.
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// For instance a regular expressions can be written as:
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// ~r/foo|bar/ ~r{foo|bar} ~r/foo|bar/g
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//
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// In general lowercase sigils allow for interpolation
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// and escaped characters, whereas uppercase sigils don't
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//
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// During tokenization we want to distinguish some
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// specific sigil types, namely string and regexp,
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// so that they cen be themed separately.
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//
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// To reasonably handle all those combinations we leverage
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// dot-separated states, so if we transition to @sigilStart.interpol.s.{.}
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// then "sigilStart.interpol.s" state will match and also all
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// the individual dot-separated parameters can be accessed.
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sigils: [
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[/~[a-z]@sigilStartDelimiter/, { token: '@rematch', next: '@sigil.interpol' }],
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[/~[A-Z]@sigilStartDelimiter/, { token: '@rematch', next: '@sigil.noInterpol' }]
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],
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sigil: [
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[/~([a-zA-Z])\{/, { token: '@rematch', switchTo: '@sigilStart.$S2.$1.{.}' }],
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[/~([a-zA-Z])\[/, { token: '@rematch', switchTo: '@sigilStart.$S2.$1.[.]' }],
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[/~([a-zA-Z])\(/, { token: '@rematch', switchTo: '@sigilStart.$S2.$1.(.)' }],
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[/~([a-zA-Z])\</, { token: '@rematch', switchTo: '@sigilStart.$S2.$1.<.>' }],
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[
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/~([a-zA-Z])(@sigilSymmetricDelimiter)/,
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{ token: '@rematch', switchTo: '@sigilStart.$S2.$1.$2.$2' }
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]
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],
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// The definitions below expect states to be of the form:
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//
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// sigilStart.<interpol-or-noInterpol>.<sigil-letter>.<start-delimiter>.<end-delimiter>
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// sigilContinue.<interpol-or-noInterpol>.<sigil-letter>.<start-delimiter>.<end-delimiter>
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//
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// The sigilStart state is used only to properly classify the token (as string/regex/sigil)
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// and immediately switches to the sigilContinue sate, which handles the actual content
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// and waits for the corresponding end delimiter.
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'sigilStart.interpol.s': [
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[
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/~s@sigilStartDelimiter/,
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{
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token: 'string.delimiter',
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switchTo: '@sigilContinue.$S2.$S3.$S4.$S5'
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}
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]
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],
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'sigilContinue.interpol.s': [
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[
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/(@sigilEndDelimiter)[a-zA-Z]*/,
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{
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cases: {
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'$1==$S5': { token: 'string.delimiter', next: '@pop' },
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'@default': 'string'
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}
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}
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],
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{ include: '@stringContentInterpol' }
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],
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'sigilStart.noInterpol.S': [
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[
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/~S@sigilStartDelimiter/,
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{
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token: 'string.delimiter',
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switchTo: '@sigilContinue.$S2.$S3.$S4.$S5'
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}
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]
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],
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'sigilContinue.noInterpol.S': [
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// Ignore escaped sigil end
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[/(^|[^\\])\\@sigilEndDelimiter/, 'string'],
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[
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/(@sigilEndDelimiter)[a-zA-Z]*/,
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{
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cases: {
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'$1==$S5': { token: 'string.delimiter', next: '@pop' },
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'@default': 'string'
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}
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}
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],
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{ include: '@stringContent' }
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],
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'sigilStart.interpol.r': [
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[
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/~r@sigilStartDelimiter/,
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{
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token: 'regexp.delimiter',
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switchTo: '@sigilContinue.$S2.$S3.$S4.$S5'
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}
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]
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],
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'sigilContinue.interpol.r': [
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[
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/(@sigilEndDelimiter)[a-zA-Z]*/,
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{
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cases: {
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'$1==$S5': { token: 'regexp.delimiter', next: '@pop' },
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'@default': 'regexp'
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}
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}
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],
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{ include: '@regexpContentInterpol' }
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],
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'sigilStart.noInterpol.R': [
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[
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/~R@sigilStartDelimiter/,
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{
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token: 'regexp.delimiter',
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switchTo: '@sigilContinue.$S2.$S3.$S4.$S5'
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}
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]
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],
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'sigilContinue.noInterpol.R': [
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// Ignore escaped sigil end
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[/(^|[^\\])\\@sigilEndDelimiter/, 'regexp'],
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[
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/(@sigilEndDelimiter)[a-zA-Z]*/,
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{
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cases: {
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'$1==$S5': { token: 'regexp.delimiter', next: '@pop' },
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'@default': 'regexp'
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}
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}
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],
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{ include: '@regexpContent' }
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],
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// Fallback to the generic sigil by default
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'sigilStart.interpol': [
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[
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/~([a-zA-Z])@sigilStartDelimiter/,
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{
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token: 'sigil.delimiter',
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switchTo: '@sigilContinue.$S2.$S3.$S4.$S5'
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}
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]
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],
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'sigilContinue.interpol': [
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[
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/(@sigilEndDelimiter)[a-zA-Z]*/,
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|
{
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cases: {
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'$1==$S5': { token: 'sigil.delimiter', next: '@pop' },
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'@default': 'sigil'
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}
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}
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],
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{ include: '@sigilContentInterpol' }
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],
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'sigilStart.noInterpol': [
|
|
[
|
|
/~([a-zA-Z])@sigilStartDelimiter/,
|
|
{
|
|
token: 'sigil.delimiter',
|
|
switchTo: '@sigilContinue.$S2.$S3.$S4.$S5'
|
|
}
|
|
]
|
|
],
|
|
|
|
'sigilContinue.noInterpol': [
|
|
// Ignore escaped sigil end
|
|
[/(^|[^\\])\\@sigilEndDelimiter/, 'sigil'],
|
|
[
|
|
/(@sigilEndDelimiter)[a-zA-Z]*/,
|
|
{
|
|
cases: {
|
|
'$1==$S5': { token: 'sigil.delimiter', next: '@pop' },
|
|
'@default': 'sigil'
|
|
}
|
|
}
|
|
],
|
|
{ include: '@sigilContent' }
|
|
],
|
|
|
|
// Attributes
|
|
|
|
attributes: [
|
|
// Module @doc* attributes - tokenized as comments
|
|
[
|
|
/\@(module|type)?doc (~[sS])?"""/,
|
|
{
|
|
token: 'comment.block.documentation',
|
|
next: '@doubleQuotedHeredocDocstring'
|
|
}
|
|
],
|
|
[
|
|
/\@(module|type)?doc (~[sS])?"/,
|
|
{
|
|
token: 'comment.block.documentation',
|
|
next: '@doubleQuotedStringDocstring'
|
|
}
|
|
],
|
|
[/\@(module|type)?doc false/, 'comment.block.documentation'],
|
|
// Module attributes
|
|
[/\@(@variableName)/, 'variable']
|
|
],
|
|
|
|
doubleQuotedHeredocDocstring: [
|
|
[/"""/, { token: 'comment.block.documentation', next: '@pop' }],
|
|
{ include: '@docstringContent' }
|
|
],
|
|
|
|
doubleQuotedStringDocstring: [
|
|
[/"/, { token: 'comment.block.documentation', next: '@pop' }],
|
|
{ include: '@docstringContent' }
|
|
],
|
|
|
|
// Operators, punctuation, brackets
|
|
|
|
symbols: [
|
|
// Code point operator (either with regular character ?a or an escaped one ?\n)
|
|
[/\?(\\.|[^\\\s])/, 'number.constant'],
|
|
// Anonymous function arguments
|
|
[/&\d+/, 'operator'],
|
|
// Bitshift operators (must go before delimiters, so that << >> don't match first)
|
|
[/<<<|>>>/, 'operator'],
|
|
// Delimiter pairs
|
|
[/[()\[\]\{\}]|<<|>>/, '@brackets'],
|
|
// Triple dot is a valid name (must go before operators, so that .. doesn't match instead)
|
|
[/\.\.\./, 'identifier'],
|
|
// Punctuation => (must go before operators, so it's not tokenized as = then >)
|
|
[/=>/, 'punctuation'],
|
|
// Operators
|
|
[/@operator/, 'operator'],
|
|
// Punctuation
|
|
[/[:;,.%]/, 'punctuation']
|
|
],
|
|
|
|
// Generic helpers
|
|
|
|
stringContentInterpol: [
|
|
{ include: '@interpolation' },
|
|
{ include: '@escapeChar' },
|
|
{ include: '@stringContent' }
|
|
],
|
|
|
|
stringContent: [[/./, 'string']],
|
|
|
|
stringConstantContentInterpol: [
|
|
{ include: '@interpolation' },
|
|
{ include: '@escapeChar' },
|
|
{ include: '@stringConstantContent' }
|
|
],
|
|
|
|
stringConstantContent: [[/./, 'constant']],
|
|
|
|
regexpContentInterpol: [
|
|
{ include: '@interpolation' },
|
|
{ include: '@escapeChar' },
|
|
{ include: '@regexpContent' }
|
|
],
|
|
|
|
regexpContent: [
|
|
// # may be a regular regexp char, so we use a heuristic
|
|
// assuming a # surrounded by whitespace is actually a comment.
|
|
[/(\s)(#)(\s.*)$/, ['white', 'comment.punctuation', 'comment']],
|
|
[/./, 'regexp']
|
|
],
|
|
|
|
sigilContentInterpol: [
|
|
{ include: '@interpolation' },
|
|
{ include: '@escapeChar' },
|
|
{ include: '@sigilContent' }
|
|
],
|
|
|
|
sigilContent: [[/./, 'sigil']],
|
|
|
|
docstringContent: [[/./, 'comment.block.documentation']],
|
|
|
|
escapeChar: [[/@escape/, 'constant.character.escape']],
|
|
|
|
interpolation: [
|
|
[/#{/, { token: 'delimiter.bracket.embed', next: '@interpolationContinue' }]
|
|
],
|
|
|
|
interpolationContinue: [
|
|
[/}/, { token: 'delimiter.bracket.embed', next: '@pop' }],
|
|
// Interpolation brackets may contain arbitrary code,
|
|
// so we simply match against all the root rules,
|
|
// until we reach interpolation end (the above matches).
|
|
{ include: '@root' }
|
|
]
|
|
}
|
|
};
|