392 lines
17 KiB
JavaScript
Executable File
392 lines
17 KiB
JavaScript
Executable File
/*---------------------------------------------------------------------------------------------
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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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'use strict';
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export var conf = {
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comments: {
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lineComment: '#',
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blockComment: ['=begin', '=end'],
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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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autoClosingPairs: [
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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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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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indentationRules: {
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increaseIndentPattern: new RegExp('^\\s*((begin|class|(private|protected)\\s+def|def|else|elsif|ensure|for|if|module|rescue|unless|until|when|while|case)|([^#]*\\sdo\\b)|([^#]*=\\s*(case|if|unless)))\\b([^#\\{;]|("|\'|\/).*\\4)*(#.*)?$'),
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decreaseIndentPattern: new RegExp('^\\s*([}\\]]([,)]?\\s*(#|$)|\\.[a-zA-Z_]\\w*\\b)|(end|rescue|ensure|else|elsif|when)\\b)'),
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}
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};
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/*
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* Ruby language definition
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*
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* Quite a complex language due to elaborate escape sequences
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* and quoting of literate strings/regular expressions, and
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* an 'end' keyword that does not always apply to modifiers like until and while,
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* and a 'do' keyword that sometimes starts a block, but sometimes is part of
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* another statement (like 'while').
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*
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* (1) end blocks:
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* 'end' may end declarations like if or until, but sometimes 'if' or 'until'
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* are modifiers where there is no 'end'. Also, 'do' sometimes starts a block
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* that is ended by 'end', but sometimes it is part of a 'while', 'for', or 'until'
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* To do proper brace matching we do some elaborate state manipulation.
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* some examples:
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*
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* until bla do
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* work until tired
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* list.each do
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* something if test
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* end
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* end
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*
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* or
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*
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* if test
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* something (if test then x end)
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* bar if bla
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* end
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*
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* or, how about using class as a property..
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*
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* class Test
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* def endpoint
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* self.class.endpoint || routes
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* end
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* end
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*
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* (2) quoting:
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* there are many kinds of strings and escape sequences. But also, one can
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* start many string-like things as '%qx' where q specifies the kind of string
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* (like a command, escape expanded, regular expression, symbol etc.), and x is
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* some character and only another 'x' ends the sequence. Except for brackets
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* where the closing bracket ends the sequence.. and except for a nested bracket
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* inside the string like entity. Also, such strings can contain interpolated
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* ruby expressions again (and span multiple lines). Moreover, expanded
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* regular expression can also contain comments.
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*/
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export var language = {
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tokenPostfix: '.ruby',
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keywords: [
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'__LINE__', '__ENCODING__', '__FILE__', 'BEGIN', 'END', 'alias', 'and', 'begin',
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'break', 'case', 'class', 'def', 'defined?', 'do', 'else', 'elsif', 'end',
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'ensure', 'for', 'false', 'if', 'in', 'module', 'next', 'nil', 'not', 'or', 'redo',
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'rescue', 'retry', 'return', 'self', 'super', 'then', 'true', 'undef', 'unless',
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'until', 'when', 'while', 'yield',
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],
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keywordops: [
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'::', '..', '...', '?', ':', '=>'
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],
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builtins: [
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'require', 'public', 'private', 'include', 'extend', 'attr_reader',
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'protected', 'private_class_method', 'protected_class_method', 'new'
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],
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// these are closed by 'end' (if, while and until are handled separately)
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declarations: [
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'module', 'class', 'def', 'case', 'do', 'begin', 'for', 'if', 'while', 'until', 'unless'
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],
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linedecls: [
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'def', 'case', 'do', 'begin', 'for', 'if', 'while', 'until', 'unless'
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],
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operators: [
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'^', '&', '|', '<=>', '==', '===', '!~', '=~', '>', '>=', '<', '<=', '<<', '>>', '+',
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'-', '*', '/', '%', '**', '~', '+@', '-@', '[]', '[]=', '`',
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'+=', '-=', '*=', '**=', '/=', '^=', '%=', '<<=', '>>=', '&=', '&&=', '||=', '|='
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],
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brackets: [
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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.square' }
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],
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// we include these common regular expressions
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symbols: /[=><!~?:&|+\-*\/\^%\.]+/,
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// escape sequences
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escape: /(?:[abefnrstv\\"'\n\r]|[0-7]{1,3}|x[0-9A-Fa-f]{1,2}|u[0-9A-Fa-f]{4})/,
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escapes: /\\(?:C\-(@escape|.)|c(@escape|.)|@escape)/,
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decpart: /\d(_?\d)*/,
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decimal: /0|@decpart/,
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delim: /[^a-zA-Z0-9\s\n\r]/,
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heredelim: /(?:\w+|'[^']*'|"[^"]*"|`[^`]*`)/,
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regexpctl: /[(){}\[\]\$\^|\-*+?\.]/,
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regexpesc: /\\(?:[AzZbBdDfnrstvwWn0\\\/]|@regexpctl|c[A-Z]|x[0-9a-fA-F]{2}|u[0-9a-fA-F]{4})?/,
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// The main tokenizer for our languages
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tokenizer: {
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// Main entry.
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// root.<decl> where decl is the current opening declaration (like 'class')
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root: [
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// identifiers and keywords
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// most complexity here is due to matching 'end' correctly with declarations.
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// We distinguish a declaration that comes first on a line, versus declarations further on a line (which are most likey modifiers)
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[/^(\s*)([a-z_]\w*[!?=]?)/, ['white',
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{
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cases: {
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'for|until|while': { token: 'keyword.$2', next: '@dodecl.$2' },
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'@declarations': { token: 'keyword.$2', next: '@root.$2' },
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'end': { token: 'keyword.$S2', next: '@pop' },
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'@keywords': 'keyword',
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'@builtins': 'predefined',
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'@default': 'identifier'
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}
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}]],
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[/[a-z_]\w*[!?=]?/,
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{
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cases: {
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'if|unless|while|until': { token: 'keyword.$0x', next: '@modifier.$0x' },
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'for': { token: 'keyword.$2', next: '@dodecl.$2' },
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'@linedecls': { token: 'keyword.$0', next: '@root.$0' },
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'end': { token: 'keyword.$S2', next: '@pop' },
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'@keywords': 'keyword',
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'@builtins': 'predefined',
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'@default': 'identifier'
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}
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}],
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[/[A-Z][\w]*[!?=]?/, 'constructor.identifier'],
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[/\$[\w]*/, 'global.constant'],
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[/@[\w]*/, 'namespace.instance.identifier'],
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[/@@[\w]*/, 'namespace.class.identifier'],
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// here document
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[/<<[-~](@heredelim).*/, { token: 'string.heredoc.delimiter', next: '@heredoc.$1' }],
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[/[ \t\r\n]+<<(@heredelim).*/, { token: 'string.heredoc.delimiter', next: '@heredoc.$1' }],
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[/^<<(@heredelim).*/, { token: 'string.heredoc.delimiter', next: '@heredoc.$1' }],
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// whitespace
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{ include: '@whitespace' },
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// strings
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[/"/, { token: 'string.d.delim', next: '@dstring.d."' }],
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[/'/, { token: 'string.sq.delim', next: '@sstring.sq' }],
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// % literals. For efficiency, rematch in the 'pstring' state
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[/%([rsqxwW]|Q?)/, { token: '@rematch', next: 'pstring' }],
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// commands and symbols
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[/`/, { token: 'string.x.delim', next: '@dstring.x.`' }],
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[/:(\w|[$@])\w*[!?=]?/, 'string.s'],
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[/:"/, { token: 'string.s.delim', next: '@dstring.s."' }],
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[/:'/, { token: 'string.s.delim', next: '@sstring.s' }],
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// regular expressions. Lookahead for a (not escaped) closing forwardslash on the same line
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[/\/(?=(\\\/|[^\/\n])+\/)/, { token: 'regexp.delim', next: '@regexp' }],
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// delimiters and operators
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[/[{}()\[\]]/, '@brackets'],
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[/@symbols/, {
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cases: {
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'@keywordops': 'keyword',
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'@operators': 'operator',
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'@default': ''
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}
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}],
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[/[;,]/, 'delimiter'],
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// numbers
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[/0[xX][0-9a-fA-F](_?[0-9a-fA-F])*/, 'number.hex'],
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[/0[_oO][0-7](_?[0-7])*/, 'number.octal'],
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[/0[bB][01](_?[01])*/, 'number.binary'],
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[/0[dD]@decpart/, 'number'],
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[/@decimal((\.@decpart)?([eE][\-+]?@decpart)?)/, {
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cases: {
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'$1': 'number.float',
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'@default': 'number'
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}
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}],
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],
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// used to not treat a 'do' as a block opener if it occurs on the same
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// line as a 'do' statement: 'while|until|for'
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// dodecl.<decl> where decl is the declarations started, like 'while'
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dodecl: [
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[/^/, { token: '', switchTo: '@root.$S2' }],
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[/[a-z_]\w*[!?=]?/, {
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cases: {
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'end': { token: 'keyword.$S2', next: '@pop' },
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'do': { token: 'keyword', switchTo: '@root.$S2' },
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'@linedecls': { token: '@rematch', switchTo: '@root.$S2' },
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'@keywords': 'keyword',
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'@builtins': 'predefined',
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'@default': 'identifier'
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}
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}],
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{ include: '@root' }
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],
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// used to prevent potential modifiers ('if|until|while|unless') to match
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// with 'end' keywords.
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// modifier.<decl>x where decl is the declaration starter, like 'if'
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modifier: [
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[/^/, '', '@pop'],
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[/[a-z_]\w*[!?=]?/, {
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cases: {
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'end': { token: 'keyword.$S2', next: '@pop' },
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'then|else|elsif|do': { token: 'keyword', switchTo: '@root.$S2' },
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'@linedecls': { token: '@rematch', switchTo: '@root.$S2' },
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'@keywords': 'keyword',
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'@builtins': 'predefined',
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'@default': 'identifier'
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}
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}],
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{ include: '@root' }
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],
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// single quote strings (also used for symbols)
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// sstring.<kind> where kind is 'sq' (single quote) or 's' (symbol)
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sstring: [
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[/[^\\']+/, 'string.$S2'],
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[/\\\\|\\'|\\$/, 'string.$S2.escape'],
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[/\\./, 'string.$S2.invalid'],
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[/'/, { token: 'string.$S2.delim', next: '@pop' }]
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],
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// double quoted "string".
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// dstring.<kind>.<delim> where kind is 'd' (double quoted), 'x' (command), or 's' (symbol)
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// and delim is the ending delimiter (" or `)
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dstring: [
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[/[^\\`"#]+/, 'string.$S2'],
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[/#/, 'string.$S2.escape', '@interpolated'],
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[/\\$/, 'string.$S2.escape'],
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[/@escapes/, 'string.$S2.escape'],
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[/\\./, 'string.$S2.escape.invalid'],
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[/[`"]/, {
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cases: {
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'$#==$S3': { token: 'string.$S2.delim', next: '@pop' },
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'@default': 'string.$S2'
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}
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}]
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],
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// literal documents
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// heredoc.<close> where close is the closing delimiter
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heredoc: [
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[/^(\s*)(@heredelim)$/, {
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cases: {
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'$2==$S2': ['string.heredoc', { token: 'string.heredoc.delimiter', next: '@pop' }],
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'@default': ['string.heredoc', 'string.heredoc']
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}
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}],
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[/.*/, 'string.heredoc'],
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],
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// interpolated sequence
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interpolated: [
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[/\$\w*/, 'global.constant', '@pop'],
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[/@\w*/, 'namespace.class.identifier', '@pop'],
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[/@@\w*/, 'namespace.instance.identifier', '@pop'],
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[/[{]/, { token: 'string.escape.curly', switchTo: '@interpolated_compound' }],
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['', '', '@pop'],
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],
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// any code
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interpolated_compound: [
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[/[}]/, { token: 'string.escape.curly', next: '@pop' }],
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{ include: '@root' },
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],
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// %r quoted regexp
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// pregexp.<open>.<close> where open/close are the open/close delimiter
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pregexp: [
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{ include: '@whitespace' },
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// turns out that you can quote using regex control characters, aargh!
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// for example; %r|kgjgaj| is ok (even though | is used for alternation)
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// so, we need to match those first
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[/[^\(\{\[\\]/, {
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cases: {
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'$#==$S3': { token: 'regexp.delim', next: '@pop' },
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'$#==$S2': { token: 'regexp.delim', next: '@push' },
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'~[)}\\]]': '@brackets.regexp.escape.control',
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'~@regexpctl': 'regexp.escape.control',
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'@default': 'regexp'
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}
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}],
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{ include: '@regexcontrol' },
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],
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// We match regular expression quite precisely
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regexp: [
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{ include: '@regexcontrol' },
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[/[^\\\/]/, 'regexp'],
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['/[ixmp]*', { token: 'regexp.delim' }, '@pop'],
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],
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regexcontrol: [
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[/(\{)(\d+(?:,\d*)?)(\})/, ['@brackets.regexp.escape.control', 'regexp.escape.control', '@brackets.regexp.escape.control']],
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[/(\[)(\^?)/, ['@brackets.regexp.escape.control', { token: 'regexp.escape.control', next: '@regexrange' }]],
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[/(\()(\?[:=!])/, ['@brackets.regexp.escape.control', 'regexp.escape.control']],
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[/\(\?#/, { token: 'regexp.escape.control', next: '@regexpcomment' }],
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[/[()]/, '@brackets.regexp.escape.control'],
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[/@regexpctl/, 'regexp.escape.control'],
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[/\\$/, 'regexp.escape'],
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[/@regexpesc/, 'regexp.escape'],
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[/\\\./, 'regexp.invalid'],
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[/#/, 'regexp.escape', '@interpolated'],
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],
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regexrange: [
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[/-/, 'regexp.escape.control'],
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[/\^/, 'regexp.invalid'],
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[/\\$/, 'regexp.escape'],
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[/@regexpesc/, 'regexp.escape'],
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[/[^\]]/, 'regexp'],
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[/\]/, '@brackets.regexp.escape.control', '@pop'],
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],
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regexpcomment: [
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[/[^)]+/, 'comment'],
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[/\)/, { token: 'regexp.escape.control', next: '@pop' }]
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],
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// % quoted strings
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// A bit repetitive since we need to often special case the kind of ending delimiter
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pstring: [
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[/%([qws])\(/, { token: 'string.$1.delim', switchTo: '@qstring.$1.(.)' }],
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[/%([qws])\[/, { token: 'string.$1.delim', switchTo: '@qstring.$1.[.]' }],
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[/%([qws])\{/, { token: 'string.$1.delim', switchTo: '@qstring.$1.{.}' }],
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[/%([qws])</, { token: 'string.$1.delim', switchTo: '@qstring.$1.<.>' }],
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[/%([qws])(@delim)/, { token: 'string.$1.delim', switchTo: '@qstring.$1.$2.$2' }],
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[/%r\(/, { token: 'regexp.delim', switchTo: '@pregexp.(.)' }],
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[/%r\[/, { token: 'regexp.delim', switchTo: '@pregexp.[.]' }],
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[/%r\{/, { token: 'regexp.delim', switchTo: '@pregexp.{.}' }],
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[/%r</, { token: 'regexp.delim', switchTo: '@pregexp.<.>' }],
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[/%r(@delim)/, { token: 'regexp.delim', switchTo: '@pregexp.$1.$1' }],
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[/%(x|W|Q?)\(/, { token: 'string.$1.delim', switchTo: '@qqstring.$1.(.)' }],
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[/%(x|W|Q?)\[/, { token: 'string.$1.delim', switchTo: '@qqstring.$1.[.]' }],
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[/%(x|W|Q?)\{/, { token: 'string.$1.delim', switchTo: '@qqstring.$1.{.}' }],
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[/%(x|W|Q?)</, { token: 'string.$1.delim', switchTo: '@qqstring.$1.<.>' }],
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[/%(x|W|Q?)(@delim)/, { token: 'string.$1.delim', switchTo: '@qqstring.$1.$2.$2' }],
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[/%([rqwsxW]|Q?)./, { token: 'invalid', next: '@pop' }],
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[/./, { token: 'invalid', next: '@pop' }],
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],
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// non-expanded quoted string.
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// qstring.<kind>.<open>.<close>
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// kind = q|w|s (single quote, array, symbol)
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// open = open delimiter
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// close = close delimiter
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qstring: [
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[/\\$/, 'string.$S2.escape'],
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[/\\./, 'string.$S2.escape'],
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[/./, {
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cases: {
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'$#==$S4': { token: 'string.$S2.delim', next: '@pop' },
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'$#==$S3': { token: 'string.$S2.delim', next: '@push' },
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'@default': 'string.$S2'
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}
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}],
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],
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// expanded quoted string.
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// qqstring.<kind>.<open>.<close>
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// kind = Q|W|x (double quote, array, command)
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// open = open delimiter
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// close = close delimiter
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qqstring: [
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[/#/, 'string.$S2.escape', '@interpolated'],
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{ include: '@qstring' }
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],
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// whitespace & comments
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whitespace: [
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[/[ \t\r\n]+/, ''],
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[/^\s*=begin\b/, 'comment', '@comment'],
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[/#.*$/, 'comment'],
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],
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comment: [
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[/[^=]+/, 'comment'],
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[/^\s*=begin\b/, 'comment.invalid'],
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[/^\s*=end\b.*/, 'comment', '@pop'],
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[/[=]/, 'comment']
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],
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}
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};
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