a54e9d5ed0a48b2757ebd589dcc12dcc83e26a07
1 // CodeMirror, copyright (c) by Marijn Haverbeke and others
2 // Distributed under an MIT license: https://codemirror.net/LICENSE
5 * Link to the project's GitHub page:
6 * https://github.com/pickhardt/coffeescript-codemirror-mode
9 if (typeof exports
== "object" && typeof module
== "object") // CommonJS
10 mod(require("../../lib/codemirror"));
11 else if (typeof define
== "function" && define
.amd
) // AMD
12 define(["../../lib/codemirror"], mod
);
13 else // Plain browser env
15 })(function(CodeMirror
) {
18 CodeMirror
.defineMode("coffeescript", function(conf
, parserConf
) {
19 var ERRORCLASS
= "error";
21 function wordRegexp(words
) {
22 return new RegExp("^((" + words
.join(")|(") + "))\\b");
25 var operators
= /^(?:->|=>|\+[+=]?|-[\-=]?|\*[\*=]?|\/[\/=]?|[=!]=|<[><]?=?|>>?=?|%=?|&=?|\|=?|\^=?|\~|!|\?|(or|and|\|\||&&|\?)=)/;
26 var delimiters
= /^(?:[()\[\]{},:`=;]|\.\.?\.?)/;
27 var identifiers
= /^[_A-Za-z$][_A-Za-z$0-9]*/;
28 var atProp
= /^@[_A-Za-z$][_A-Za-z$0-9]*/;
30 var wordOperators
= wordRegexp(["and", "or", "not",
32 "instanceof", "typeof"]);
33 var indentKeywords
= ["for", "while", "loop", "if", "unless", "else",
34 "switch", "try", "catch", "finally", "class"];
35 var commonKeywords
= ["break", "by", "continue", "debugger", "delete",
36 "do", "in", "of", "new", "return", "then",
37 "this", "@", "throw", "when", "until", "extends"];
39 var keywords
= wordRegexp(indentKeywords
.concat(commonKeywords
));
41 indentKeywords
= wordRegexp(indentKeywords
);
44 var stringPrefixes
= /^('{3}|\"{3}|['\"])/;
45 var regexPrefixes
= /^(\/{3}|\/)/;
46 var commonConstants
= ["Infinity", "NaN", "undefined", "null", "true", "false", "on", "off", "yes", "no"];
47 var constants
= wordRegexp(commonConstants
);
50 function tokenBase(stream
, state
) {
51 // Handle scope changes
53 if (state
.scope
.align
=== null) state
.scope
.align
= false;
54 var scopeOffset
= state
.scope
.offset
;
55 if (stream
.eatSpace()) {
56 var lineOffset
= stream
.indentation();
57 if (lineOffset
> scopeOffset
&& state
.scope
.type
== "coffee") {
59 } else if (lineOffset
< scopeOffset
) {
64 if (scopeOffset
> 0) {
65 dedent(stream
, state
);
69 if (stream
.eatSpace()) {
73 var ch
= stream
.peek();
75 // Handle docco title comment (single line)
76 if (stream
.match("####")) {
81 // Handle multi line comments
82 if (stream
.match("###")) {
83 state
.tokenize
= longComment
;
84 return state
.tokenize(stream
, state
);
87 // Single line comment
93 // Handle number literals
94 if (stream
.match(/^-?[0-9\.]/, false)) {
95 var floatLiteral
= false;
97 if (stream
.match(/^-?\d*\.\d+(e[\+\-]?\d+)?/i)) {
100 if (stream
.match(/^-?\d+\.\d*/)) {
103 if (stream
.match(/^-?\.\d+/)) {
108 // prevent from getting extra . on 1..
109 if (stream
.peek() == "."){
115 var intLiteral
= false;
117 if (stream
.match(/^-?0x[0-9a-f]+/i)) {
121 if (stream
.match(/^-?[1-9]\d*(e[\+\-]?\d+)?/)) {
124 // Zero by itself with no other piece of number.
125 if (stream
.match(/^-?0(?![\dx])/i)) {
134 if (stream
.match(stringPrefixes
)) {
135 state
.tokenize
= tokenFactory(stream
.current(), false, "string");
136 return state
.tokenize(stream
, state
);
138 // Handle regex literals
139 if (stream
.match(regexPrefixes
)) {
140 if (stream
.current() != "/" || stream
.match(/^.*\//, false)) { // prevent highlight of division
141 state
.tokenize
= tokenFactory(stream
.current(), true, "string-2");
142 return state
.tokenize(stream
, state
);
150 // Handle operators and delimiters
151 if (stream
.match(operators
) || stream
.match(wordOperators
)) {
154 if (stream
.match(delimiters
)) {
155 return "punctuation";
158 if (stream
.match(constants
)) {
162 if (stream
.match(atProp
) || state
.prop
&& stream
.match(identifiers
)) {
166 if (stream
.match(keywords
)) {
170 if (stream
.match(identifiers
)) {
174 // Handle non-detected items
179 function tokenFactory(delimiter
, singleline
, outclass
) {
180 return function(stream
, state
) {
181 while (!stream
.eol()) {
182 stream
.eatWhile(/[^'"\/\\]/);
183 if (stream
.eat("\\")) {
185 if (singleline
&& stream
.eol()) {
188 } else if (stream
.match(delimiter
)) {
189 state
.tokenize
= tokenBase
;
192 stream
.eat(/['"\/]/);
196 if (parserConf
.singleLineStringErrors
) {
197 outclass
= ERRORCLASS
;
199 state
.tokenize
= tokenBase
;
206 function longComment(stream
, state
) {
207 while (!stream
.eol()) {
208 stream
.eatWhile(/[^#]/);
209 if (stream
.match("###")) {
210 state
.tokenize
= tokenBase
;
213 stream
.eatWhile("#");
218 function indent(stream
, state
, type
) {
219 type
= type
|| "coffee";
220 var offset
= 0, align
= false, alignOffset
= null;
221 for (var scope
= state
.scope
; scope
; scope
= scope
.prev
) {
222 if (scope
.type
=== "coffee" || scope
.type
== "}") {
223 offset
= scope
.offset
+ conf
.indentUnit
;
227 if (type
!== "coffee") {
229 alignOffset
= stream
.column() + stream
.current().length
;
230 } else if (state
.scope
.align
) {
231 state
.scope
.align
= false;
238 alignOffset
: alignOffset
242 function dedent(stream
, state
) {
243 if (!state
.scope
.prev
) return;
244 if (state
.scope
.type
=== "coffee") {
245 var _indent
= stream
.indentation();
247 for (var scope
= state
.scope
; scope
; scope
= scope
.prev
) {
248 if (_indent
=== scope
.offset
) {
256 while (state
.scope
.prev
&& state
.scope
.offset
!== _indent
) {
257 state
.scope
= state
.scope
.prev
;
261 state
.scope
= state
.scope
.prev
;
266 function tokenLexer(stream
, state
) {
267 var style
= state
.tokenize(stream
, state
);
268 var current
= stream
.current();
270 // Handle scope changes.
271 if (current
=== "return") {
274 if (((current
=== "->" || current
=== "=>") && stream
.eol())
275 || style
=== "indent") {
276 indent(stream
, state
);
278 var delimiter_index
= "[({".indexOf(current
);
279 if (delimiter_index
!== -1) {
280 indent(stream
, state
, "])}".slice(delimiter_index
, delimiter_index
+1));
282 if (indentKeywords
.exec(current
)){
283 indent(stream
, state
);
285 if (current
== "then"){
286 dedent(stream
, state
);
290 if (style
=== "dedent") {
291 if (dedent(stream
, state
)) {
295 delimiter_index
= "])}".indexOf(current
);
296 if (delimiter_index
!== -1) {
297 while (state
.scope
.type
== "coffee" && state
.scope
.prev
)
298 state
.scope
= state
.scope
.prev
;
299 if (state
.scope
.type
== current
)
300 state
.scope
= state
.scope
.prev
;
302 if (state
.dedent
&& stream
.eol()) {
303 if (state
.scope
.type
== "coffee" && state
.scope
.prev
)
304 state
.scope
= state
.scope
.prev
;
305 state
.dedent
= false;
312 startState: function(basecolumn
) {
315 scope
: {offset
:basecolumn
|| 0, type
:"coffee", prev
: null, align
: false},
321 token: function(stream
, state
) {
322 var fillAlign
= state
.scope
.align
=== null && state
.scope
;
323 if (fillAlign
&& stream
.sol()) fillAlign
.align
= false;
325 var style
= tokenLexer(stream
, state
);
326 if (style
&& style
!= "comment") {
327 if (fillAlign
) fillAlign
.align
= true;
328 state
.prop
= style
== "punctuation" && stream
.current() == "."
334 indent: function(state
, text
) {
335 if (state
.tokenize
!= tokenBase
) return 0;
336 var scope
= state
.scope
;
337 var closer
= text
&& "])}".indexOf(text
.charAt(0)) > -1;
338 if (closer
) while (scope
.type
== "coffee" && scope
.prev
) scope
= scope
.prev
;
339 var closes
= closer
&& scope
.type
=== text
.charAt(0);
341 return scope
.alignOffset
- (closes
? 1 : 0);
343 return (closes
? scope
.prev
: scope
).offset
;
352 // IANA registered media type
353 // https://www.iana.org/assignments/media-types/
354 CodeMirror
.defineMIME("application/vnd.coffeescript", "coffeescript");
356 CodeMirror
.defineMIME("text/x-coffeescript", "coffeescript");
357 CodeMirror
.defineMIME("text/coffeescript", "coffeescript");