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1 " Language: CoffeeScript
2 " Maintainer: Mick Koch <kchmck@gmail.com>
3 " URL: http://github.com/kchmck/vim-coffee-script
4 " License: WTFPL
5
6 " Bail if our syntax is already loaded.
7 if exists('b:current_syntax') && b:current_syntax == 'coffee'
8 finish
9 endif
10
11 if version < 600
12 syn clear
13 endif
14
15 " Include JavaScript for coffeeEmbed.
16 syn include @coffeeJS syntax/javascript.vim
17
18 " Highlight long strings.
19 syn sync minlines=100
20
21 " CoffeeScript identifiers can have dollar signs.
22 setlocal isident+=$
23
24 " These are `matches` instead of `keywords` because vim's highlighting
25 " priority for keywords is higher than matches. This causes keywords to be
26 " highlighted inside matches, even if a match says it shouldn't contain them --
27 " like with coffeeAssign and coffeeDot.
28 syn match coffeeStatement /\<\%(return\|break\|continue\|throw\)\>/ display
29 hi def link coffeeStatement Statement
30
31 syn match coffeeRepeat /\<\%(for\|while\|until\|loop\)\>/ display
32 hi def link coffeeRepeat Repeat
33
34 syn match coffeeConditional /\<\%(if\|else\|unless\|switch\|when\|then\)\>/
35 \ display
36 hi def link coffeeConditional Conditional
37
38 syn match coffeeException /\<\%(try\|catch\|finally\)\>/ display
39 hi def link coffeeException Exception
40
41 syn match coffeeKeyword /\<\%(new\|in\|of\|by\|and\|or\|not\|is\|isnt\|class\|extends\|super\|own\|do\)\>/
42 \ display
43 hi def link coffeeKeyword Keyword
44
45 syn match coffeeOperator /\<\%(instanceof\|typeof\|delete\)\>/ display
46 hi def link coffeeOperator Operator
47
48 " The first case matches symbol operators only if they have an operand before.
49 syn match coffeeExtendedOp /\%(\S\s*\)\@<=[+\-*/%&|\^=!<>?.]\+\|--\|++\|::/
50 \ display
51 syn match coffeeExtendedOp /\%(and\|or\)=/ display
52 hi def link coffeeExtendedOp coffeeOperator
53
54 " This is separate from `coffeeExtendedOp` to help differentiate commas from
55 " dots.
56 syn match coffeeSpecialOp /[,;]/ display
57 hi def link coffeeSpecialOp SpecialChar
58
59 syn match coffeeBoolean /\<\%(true\|on\|yes\|false\|off\|no\)\>/ display
60 hi def link coffeeBoolean Boolean
61
62 syn match coffeeGlobal /\<\%(null\|undefined\)\>/ display
63 hi def link coffeeGlobal Type
64
65 " A special variable
66 syn match coffeeSpecialVar /\<\%(this\|prototype\|arguments\)\>/ display
67 " An @-variable
68 syn match coffeeSpecialVar /@\%(\I\i*\)\?/ display
69 hi def link coffeeSpecialVar Special
70
71 " A class-like name that starts with a capital letter
72 syn match coffeeObject /\<\u\w*\>/ display
73 hi def link coffeeObject Structure
74
75 " A constant-like name in SCREAMING_CAPS
76 syn match coffeeConstant /\<\u[A-Z0-9_]\+\>/ display
77 hi def link coffeeConstant Constant
78
79 " A variable name
80 syn cluster coffeeIdentifier contains=coffeeSpecialVar,coffeeObject,
81 \ coffeeConstant
82
83 " A non-interpolated string
84 syn cluster coffeeBasicString contains=@Spell,coffeeEscape
85 " An interpolated string
86 syn cluster coffeeInterpString contains=@coffeeBasicString,coffeeInterp
87
88 " Regular strings
89 syn region coffeeString start=/"/ skip=/\\\\\|\\"/ end=/"/
90 \ contains=@coffeeInterpString
91 syn region coffeeString start=/'/ skip=/\\\\\|\\'/ end=/'/
92 \ contains=@coffeeBasicString
93 hi def link coffeeString String
94
95 " A integer, including a leading plus or minus
96 syn match coffeeNumber /\i\@<![-+]\?\d\+\%([eE][+-]\?\d\+\)\?/ display
97 " A hex number
98 syn match coffeeNumber /\<0[xX]\x\+\>/ display
99 hi def link coffeeNumber Number
100
101 " A floating-point number, including a leading plus or minus
102 syn match coffeeFloat /\i\@<![-+]\?\d*\.\@<!\.\d\+\%([eE][+-]\?\d\+\)\?/
103 \ display
104 hi def link coffeeFloat Float
105
106 " An error for reserved keywords
107 if !exists("coffee_no_reserved_words_error")
108 syn match coffeeReservedError /\<\%(case\|default\|function\|var\|void\|with\|const\|let\|enum\|export\|import\|native\|__hasProp\|__extends\|__slice\|__bind\|__indexOf\)\>/
109 \ display
110 hi def link coffeeReservedError Error
111 endif
112
113 " This is separate from `coffeeExtendedOp` since assignments require it.
114 syn match coffeeAssignOp /:/ contained display
115 hi def link coffeeAssignOp coffeeOperator
116
117 " Strings used in string assignments, which can't have interpolations
118 syn region coffeeAssignString start=/"/ skip=/\\\\\|\\"/ end=/"/ contained
119 \ contains=@coffeeBasicString
120 syn region coffeeAssignString start=/'/ skip=/\\\\\|\\'/ end=/'/ contained
121 \ contains=@coffeeBasicString
122 hi def link coffeeAssignString String
123
124 " A normal object assignment
125 syn match coffeeObjAssign /@\?\I\i*\s*:\@<!::\@!/
126 \ contains=@coffeeIdentifier,coffeeAssignOp
127 hi def link coffeeObjAssign Identifier
128
129 " An object-string assignment
130 syn match coffeeObjStringAssign /\("\|'\)[^\1]*\1\s*;\@<!::\@!'\@!/
131 \ contains=coffeeAssignString,coffeeAssignOp
132 " An object-integer assignment
133 syn match coffeeObjNumberAssign /\d\+\%(\.\d\+\)\?\s*:\@<!::\@!/
134 \ contains=coffeeNumber,coffeeAssignOp
135
136 syn keyword coffeeTodo TODO FIXME XXX contained
137 hi def link coffeeTodo Todo
138
139 syn match coffeeComment /#.*/ contains=@Spell,coffeeTodo
140 hi def link coffeeComment Comment
141
142 syn region coffeeBlockComment start=/####\@!/ end=/###/
143 \ contains=@Spell,coffeeTodo
144 hi def link coffeeBlockComment coffeeComment
145
146 " A comment in a heregex
147 syn region coffeeHeregexComment start=/#/ end=/\ze\/\/\/\|$/ contained
148 \ contains=@Spell,coffeeTodo
149 hi def link coffeeHeregexComment coffeeComment
150
151 " Embedded JavaScript
152 syn region coffeeEmbed matchgroup=coffeeEmbedDelim
153 \ start=/`/ skip=/\\\\\|\\`/ end=/`/
154 \ contains=@coffeeJS
155 hi def link coffeeEmbedDelim Delimiter
156
157 syn region coffeeInterp matchgroup=coffeeInterpDelim start=/#{/ end=/}/ contained
158 \ contains=@coffeeAll
159 hi def link coffeeInterpDelim PreProc
160
161 " A string escape sequence
162 syn match coffeeEscape /\\\d\d\d\|\\x\x\{2\}\|\\u\x\{4\}\|\\./ contained display
163 hi def link coffeeEscape SpecialChar
164
165 " A regex -- must not follow a parenthesis, number, or identifier, and must not
166 " be followed by a number
167 syn region coffeeRegex start=/\%(\%()\|\i\@<!\d\)\s*\|\i\)\@<!\/=\@!\s\@!/
168 \ skip=/\[[^\]]\{-}\/[^\]]\{-}\]/
169 \ end=/\/[gimy]\{,4}\d\@!/
170 \ oneline contains=@coffeeBasicString
171 hi def link coffeeRegex String
172
173 " A heregex
174 syn region coffeeHeregex start=/\/\/\// end=/\/\/\/[gimy]\{,4}/
175 \ contains=@coffeeInterpString,coffeeHeregexComment
176 \ fold
177 hi def link coffeeHeregex coffeeRegex
178
179 " Heredoc strings
180 syn region coffeeHeredoc start=/"""/ end=/"""/ contains=@coffeeInterpString
181 \ fold
182 syn region coffeeHeredoc start=/'''/ end=/'''/ contains=@coffeeBasicString
183 \ fold
184 hi def link coffeeHeredoc String
185
186 " An error for trailing whitespace, as long as the line isn't just whitespace
187 if !exists("coffee_no_trailing_space_error")
188 syn match coffeeSpaceError /\S\@<=\s\+$/ display
189 hi def link coffeeSpaceError Error
190 endif
191
192 " An error for trailing semicolons, for help transitioning from JavaScript
193 if !exists("coffee_no_trailing_semicolon_error")
194 syn match coffeeSemicolonError /;$/ display
195 hi def link coffeeSemicolonError Error
196 endif
197
198 " Ignore reserved words in dot accesses.
199 syn match coffeeDotAccess /\.\@<!\.\s*\I\i*/he=s+1 contains=@coffeeIdentifier
200 hi def link coffeeDotAccess coffeeExtendedOp
201
202 " Ignore reserved words in prototype accesses.
203 syn match coffeeProtoAccess /::\s*\I\i*/he=s+2 contains=@coffeeIdentifier
204 hi def link coffeeProtoAccess coffeeExtendedOp
205
206 " This is required for interpolations to work.
207 syn region coffeeCurlies matchgroup=coffeeCurly start=/{/ end=/}/
208 \ contains=@coffeeAll
209 syn region coffeeBrackets matchgroup=coffeeBracket start=/\[/ end=/\]/
210 \ contains=@coffeeAll
211 syn region coffeeParens matchgroup=coffeeParen start=/(/ end=/)/
212 \ contains=@coffeeAll
213
214 " These are highlighted the same as commas since they tend to go together.
215 hi def link coffeeBlock coffeeSpecialOp
216 hi def link coffeeBracket coffeeBlock
217 hi def link coffeeCurly coffeeBlock
218 hi def link coffeeParen coffeeBlock
219
220 " This is used instead of TOP to keep things coffee-specific for good
221 " embedding. `contained` groups aren't included.
222 syn cluster coffeeAll contains=coffeeStatement,coffeeRepeat,coffeeConditional,
223 \ coffeeException,coffeeKeyword,coffeeOperator,
224 \ coffeeExtendedOp,coffeeSpecialOp,coffeeBoolean,
225 \ coffeeGlobal,coffeeSpecialVar,coffeeObject,
226 \ coffeeConstant,coffeeString,coffeeNumber,
227 \ coffeeFloat,coffeeReservedError,coffeeObjAssign,
228 \ coffeeObjStringAssign,coffeeObjNumberAssign,
229 \ coffeeComment,coffeeBlockComment,coffeeEmbed,
230 \ coffeeRegex,coffeeHeregex,coffeeHeredoc,
231 \ coffeeSpaceError,coffeeSemicolonError,
232 \ coffeeDotAccess,coffeeProtoAccess,
233 \ coffeeCurlies,coffeeBrackets,coffeeParens
234
235 if !exists('b:current_syntax')
236 let b:current_syntax = 'coffee'
237 endif