3 " Maintainer: Patrick Walton <pcwalton@mozilla.com>
4 " Maintainer: Ben Blum <bblum@cs.cmu.edu>
5 " Maintainer: Chris Morgan <me@chrismorgan.info>
6 " Last Change: 2014 Feb 27
10 elseif exists("b:current_syntax")
14 " Syntax definitions {{{1
16 syn keyword rustConditional match if else
17 syn keyword rustOperator as
19 syn match rustAssert "\<assert\(\w\)*!" contained
20 syn match rustFail "\<fail\(\w\)*!" contained
21 syn keyword rustKeyword break
22 syn keyword rustKeyword box nextgroup=rustBoxPlacement skipwhite skipempty
23 syn keyword rustKeyword continue
24 syn keyword rustKeyword extern nextgroup=rustExternCrate,rustObsoleteExternMod skipwhite skipempty
25 syn keyword rustKeyword fn nextgroup=rustFuncName skipwhite skipempty
26 syn keyword rustKeyword for in if impl let
27 syn keyword rustKeyword loop once proc pub
28 syn keyword rustKeyword return super
29 syn keyword rustKeyword unsafe virtual while
30 syn keyword rustKeyword use nextgroup=rustModPath skipwhite skipempty
31 " FIXME: Scoped impl's name is also fallen in this category
32 syn keyword rustKeyword mod trait struct enum type nextgroup=rustIdentifier skipwhite skipempty
33 syn keyword rustStorage mut ref static const
35 syn keyword rustInvalidBareKeyword crate
37 syn keyword rustExternCrate crate contained nextgroup=rustIdentifier skipwhite skipempty
38 syn keyword rustObsoleteExternMod mod contained nextgroup=rustIdentifier skipwhite skipempty
40 syn match rustIdentifier contains=rustIdentifierPrime "\%([^[:cntrl:][:space:][:punct:][:digit:]]\|_\)\%([^[:cntrl:][:punct:][:space:]]\|_\)*" display contained
41 syn match rustFuncName "\%([^[:cntrl:][:space:][:punct:][:digit:]]\|_\)\%([^[:cntrl:][:punct:][:space:]]\|_\)*" display contained
43 syn region rustBoxPlacement matchgroup=rustBoxPlacementParens start="(" end=")" contains=TOP contained
44 syn keyword rustBoxPlacementExpr GC containedin=rustBoxPlacement
45 " Ideally we'd have syntax rules set up to match arbitrary expressions. Since
46 " we don't, we'll just define temporary contained rules to handle balancing
48 syn region rustBoxPlacementBalance start="(" end=")" containedin=rustBoxPlacement transparent
49 syn region rustBoxPlacementBalance start="\[" end="\]" containedin=rustBoxPlacement transparent
50 " {} are handled by rustFoldBraces
52 " Reserved (but not yet used) keywords {{{2
53 syn keyword rustReservedKeyword alignof be do offsetof priv pure sizeof typeof unsized yield
56 syn keyword rustType int uint float char bool u8 u16 u32 u64 f32
57 syn keyword rustType f64 i8 i16 i32 i64 str Self
59 " Things from the prelude (src/libstd/prelude.rs) {{{2
60 " This section is just straight transformation of the contents of the prelude,
61 " to make it easy to update.
64 syn keyword rustTrait Copy Send Sized Share
65 syn keyword rustTrait Add Sub Mul Div Rem Neg Not
66 syn keyword rustTrait BitAnd BitOr BitXor
67 syn keyword rustTrait Drop Deref DerefMut
68 syn keyword rustTrait Shl Shr Index
69 syn keyword rustEnum Option
70 syn keyword rustEnumVariant Some None
71 syn keyword rustEnum Result
72 syn keyword rustEnumVariant Ok Err
75 "syn keyword rustFunction from_str
76 "syn keyword rustFunction range
77 "syn keyword rustFunction drop
79 " Types and traits {{{3
80 syn keyword rustTrait Ascii AsciiCast OwnedAsciiCast AsciiStr
81 syn keyword rustTrait IntoBytes
82 syn keyword rustTrait ToCStr
83 syn keyword rustTrait Char
84 syn keyword rustTrait Clone
85 syn keyword rustTrait PartialEq PartialOrd Eq Ord Equiv
86 syn keyword rustEnum Ordering
87 syn keyword rustEnumVariant Less Equal Greater
88 syn keyword rustTrait Collection Mutable Map MutableMap
89 syn keyword rustTrait Set MutableSet
90 syn keyword rustTrait FromIterator Extendable ExactSize
91 syn keyword rustTrait Iterator DoubleEndedIterator
92 syn keyword rustTrait RandomAccessIterator CloneableIterator
93 syn keyword rustTrait OrdIterator MutableDoubleEndedIterator
94 syn keyword rustTrait Num NumCast CheckedAdd CheckedSub CheckedMul CheckedDiv
95 syn keyword rustTrait Signed Unsigned Primitive Int Float
96 syn keyword rustTrait FloatMath ToPrimitive FromPrimitive
97 syn keyword rustTrait Box
98 syn keyword rustTrait GenericPath Path PosixPath WindowsPath
99 syn keyword rustTrait RawPtr
100 syn keyword rustTrait Buffer Writer Reader Seek
101 syn keyword rustTrait Str StrVector StrSlice OwnedStr
102 syn keyword rustTrait IntoMaybeOwned StrAllocating
103 syn keyword rustTrait ToStr IntoStr
104 syn keyword rustTrait Tuple1 Tuple2 Tuple3 Tuple4
105 syn keyword rustTrait Tuple5 Tuple6 Tuple7 Tuple8
106 syn keyword rustTrait Tuple9 Tuple10 Tuple11 Tuple12
107 syn keyword rustTrait CloneableVector ImmutableCloneableVector
108 syn keyword rustTrait MutableCloneableVector MutableOrdVector
109 syn keyword rustTrait ImmutableVector MutableVector
110 syn keyword rustTrait ImmutableEqVector ImmutableOrdVector
111 syn keyword rustTrait Vector VectorVector
112 syn keyword rustTrait MutableVectorAllocating
113 syn keyword rustTrait String
114 syn keyword rustTrait Vec
116 "syn keyword rustFunction sync_channel channel
117 syn keyword rustTrait SyncSender Sender Receiver
118 "syn keyword rustFunction spawn
120 "syn keyword rustConstant GC
122 syn keyword rustSelf self
123 syn keyword rustBoolean true false
127 " If foo::bar changes to foo.bar, change this ("::" to "\.").
128 " If foo::bar changes to Foo::bar, change this (first "\w" to "\u").
129 syn match rustModPath "\w\(\w\)*::[^<]"he=e-3,me=e-3
130 syn match rustModPath "\w\(\w\)*" contained " only for 'use path;'
131 syn match rustModPathSep "::"
133 syn match rustFuncCall "\w\(\w\)*("he=e-1,me=e-1
134 syn match rustFuncCall "\w\(\w\)*::<"he=e-3,me=e-3 " foo::<T>();
136 " This is merely a convention; note also the use of [A-Z], restricting it to
137 " latin identifiers rather than the full Unicode uppercase. I have not used
138 " [:upper:] as it depends upon 'noignorecase'
139 "syn match rustCapsIdent display "[A-Z]\w\(\w\)*"
141 syn match rustOperator display "\%(+\|-\|/\|*\|=\|\^\|&\||\|!\|>\|<\|%\)=\?"
142 " This one isn't *quite* right, as we could have binary-& with a reference
143 syn match rustSigil display /&\s\+[&~@*][^)= \t\r\n]/he=e-1,me=e-1
144 syn match rustSigil display /[&~@*][^)= \t\r\n]/he=e-1,me=e-1
145 " This isn't actually correct; a closure with no arguments can be `|| { }`.
146 " Last, because the & in && isn't a sigil
147 syn match rustOperator display "&&\|||"
149 syn match rustMacro '\w\(\w\)*!' contains=rustAssert,rustFail
150 syn match rustMacro '#\w\(\w\)*' contains=rustAssert,rustFail
152 syn match rustEscapeError display contained /\\./
153 syn match rustEscape display contained /\\\([nrt0\\'"]\|x\x\{2}\)/
154 syn match rustEscapeUnicode display contained /\\\(u\x\{4}\|U\x\{8}\)/
155 syn match rustStringContinuation display contained /\\\n\s*/
156 syn region rustString start=+b"+ skip=+\\\\\|\\"+ end=+"+ contains=rustEscape,rustEscapeError,rustStringContinuation
157 syn region rustString start=+"+ skip=+\\\\\|\\"+ end=+"+ contains=rustEscape,rustEscapeUnicode,rustEscapeError,rustStringContinuation,@Spell
158 syn region rustString start='b\?r\z(#*\)"' end='"\z1' contains=@Spell
160 syn region rustAttribute start="#!\?\[" end="\]" contains=rustString,rustDeriving
161 syn region rustDeriving start="deriving(" end=")" contained contains=rustTrait
164 syn match rustDecNumber display "\<[0-9][0-9_]*\%([iu]\%(8\|16\|32\|64\)\=\)\="
165 syn match rustHexNumber display "\<0x[a-fA-F0-9_]\+\%([iu]\%(8\|16\|32\|64\)\=\)\="
166 syn match rustOctNumber display "\<0o[0-7_]\+\%([iu]\%(8\|16\|32\|64\)\=\)\="
167 syn match rustBinNumber display "\<0b[01_]\+\%([iu]\%(8\|16\|32\|64\)\=\)\="
169 " Special case for numbers of the form "1." which are float literals, unless followed by
170 " an identifier, which makes them integer literals with a method call or field access.
171 " (This must go first so the others take precedence.)
172 syn match rustFloat display "\<[0-9][0-9_]*\.\%([^[:cntrl:][:space:][:punct:][:digit:]]\|_\)\@!"
173 " To mark a number as a normal float, it must have at least one of the three things integral values don't have:
174 " a decimal point and more numbers; an exponent; and a type suffix.
175 syn match rustFloat display "\<[0-9][0-9_]*\%(\.[0-9][0-9_]*\)\%([eE][+-]\=[0-9_]\+\)\=\(f32\|f64\)\="
176 syn match rustFloat display "\<[0-9][0-9_]*\%(\.[0-9][0-9_]*\)\=\%([eE][+-]\=[0-9_]\+\)\(f32\|f64\)\="
177 syn match rustFloat display "\<[0-9][0-9_]*\%(\.[0-9][0-9_]*\)\=\%([eE][+-]\=[0-9_]\+\)\=\(f32\|f64\)"
179 " For the benefit of delimitMate
180 syn region rustLifetimeCandidate display start=/&'\%(\([^'\\]\|\\\(['nrt0\\\"]\|x\x\{2}\|u\x\{4}\|U\x\{8}\)\)'\)\@!/ end=/[[:cntrl:][:space:][:punct:]]\@=\|$/ contains=rustSigil,rustLifetime
181 syn region rustGenericRegion display start=/<\%('\|[^[cntrl:][:space:][:punct:]]\)\@=')\S\@=/ end=/>/ contains=rustGenericLifetimeCandidate
182 syn region rustGenericLifetimeCandidate display start=/\%(<\|,\s*\)\@<='/ end=/[[:cntrl:][:space:][:punct:]]\@=\|$/ contains=rustSigil,rustLifetime
184 "rustLifetime must appear before rustCharacter, or chars will get the lifetime highlighting
185 syn match rustLifetime display "\'\%([^[:cntrl:][:space:][:punct:][:digit:]]\|_\)\%([^[:cntrl:][:punct:][:space:]]\|_\)*"
186 syn match rustCharacterInvalid display contained /b\?'\zs[\n\r\t']\ze'/
187 " The groups negated here add up to 0-255 but nothing else (they do not seem to go beyond ASCII).
188 syn match rustCharacterInvalidUnicode display contained /b'\zs[^[:cntrl:][:graph:][:alnum:][:space:]]\ze'/
189 syn match rustCharacter /b'\([^\\]\|\\\(.\|x\x\{2}\)\)'/ contains=rustEscape,rustEscapeError,rustCharacterInvalid,rustCharacterInvalidUnicode
190 syn match rustCharacter /'\([^\\]\|\\\(.\|x\x\{2}\|u\x\{4}\|U\x\{8}\)\)'/ contains=rustEscape,rustEscapeUnicode,rustEscapeError,rustCharacterInvalid
192 syn region rustCommentLine start="//" end="$" contains=rustTodo,@Spell
193 syn region rustCommentLineDoc start="//\%(//\@!\|!\)" end="$" contains=rustTodo,@Spell
194 syn region rustCommentBlock matchgroup=rustCommentBlock start="/\*\%(!\|\*[*/]\@!\)\@!" end="\*/" contains=rustTodo,rustCommentBlockNest,@Spell
195 syn region rustCommentBlockDoc matchgroup=rustCommentBlockDoc start="/\*\%(!\|\*[*/]\@!\)" end="\*/" contains=rustTodo,rustCommentBlockDocNest,@Spell
196 syn region rustCommentBlockNest matchgroup=rustCommentBlock start="/\*" end="\*/" contains=rustTodo,rustCommentBlockNest,@Spell contained transparent
197 syn region rustCommentBlockDocNest matchgroup=rustCommentBlockDoc start="/\*" end="\*/" contains=rustTodo,rustCommentBlockDocNest,@Spell contained transparent
198 " FIXME: this is a really ugly and not fully correct implementation. Most
199 " importantly, a case like ``/* */*`` should have the final ``*`` not being in
200 " a comment, but in practice at present it leaves comments open two levels
201 " deep. But as long as you stay away from that particular case, I *believe*
202 " the highlighting is correct. Due to the way Vim's syntax engine works
203 " (greedy for start matches, unlike Rust's tokeniser which is searching for
204 " the earliest-starting match, start or end), I believe this cannot be solved.
205 " Oh you who would fix it, don't bother with things like duplicating the Block
206 " rules and putting ``\*\@<!`` at the start of them; it makes it worse, as
207 " then you must deal with cases like ``/*/**/*/``. And don't try making it
208 " worse with ``\%(/\@<!\*\)\@<!``, either...
210 syn keyword rustTodo contained TODO FIXME XXX NB NOTE
213 " Trivial folding rules to begin with.
214 " TODO: use the AST to make really good folding
215 syn region rustFoldBraces start="{" end="}" transparent fold
216 " If you wish to enable this, setlocal foldmethod=syntax
217 " It's not enabled by default as it would drive some people mad.
219 " Default highlighting {{{1
220 hi def link rustDecNumber rustNumber
221 hi def link rustHexNumber rustNumber
222 hi def link rustOctNumber rustNumber
223 hi def link rustBinNumber rustNumber
224 hi def link rustIdentifierPrime rustIdentifier
225 hi def link rustTrait rustType
227 hi def link rustSigil StorageClass
228 hi def link rustEscape Special
229 hi def link rustEscapeUnicode rustEscape
230 hi def link rustEscapeError Error
231 hi def link rustStringContinuation Special
232 hi def link rustString String
233 hi def link rustCharacterInvalid Error
234 hi def link rustCharacterInvalidUnicode rustCharacterInvalid
235 hi def link rustCharacter Character
236 hi def link rustNumber Number
237 hi def link rustBoolean Boolean
238 hi def link rustEnum rustType
239 hi def link rustEnumVariant rustConstant
240 hi def link rustConstant Constant
241 hi def link rustSelf Constant
242 hi def link rustFloat Float
243 hi def link rustOperator Operator
244 hi def link rustKeyword Keyword
245 hi def link rustReservedKeyword Error
246 hi def link rustConditional Conditional
247 hi def link rustIdentifier Identifier
248 hi def link rustCapsIdent rustIdentifier
249 hi def link rustModPath Include
250 hi def link rustModPathSep Delimiter
251 hi def link rustFunction Function
252 hi def link rustFuncName Function
253 hi def link rustFuncCall Function
254 hi def link rustCommentLine Comment
255 hi def link rustCommentLineDoc SpecialComment
256 hi def link rustCommentBlock rustCommentLine
257 hi def link rustCommentBlockDoc rustCommentLineDoc
258 hi def link rustAssert PreCondit
259 hi def link rustFail PreCondit
260 hi def link rustMacro Macro
261 hi def link rustType Type
262 hi def link rustTodo Todo
263 hi def link rustAttribute PreProc
264 hi def link rustDeriving PreProc
265 hi def link rustStorage StorageClass
266 hi def link rustObsoleteStorage Error
267 hi def link rustLifetime Special
268 hi def link rustInvalidBareKeyword Error
269 hi def link rustExternCrate rustKeyword
270 hi def link rustObsoleteExternMod Error
271 hi def link rustBoxPlacementParens Delimiter
272 hi def link rustBoxPlacementExpr rustKeyword
275 " hi rustAttribute ctermfg=cyan
276 " hi rustDeriving ctermfg=cyan
277 " hi rustAssert ctermfg=yellow
278 " hi rustFail ctermfg=red
279 " hi rustMacro ctermfg=magenta
281 syn sync minlines=200
282 syn sync maxlines=500
284 let b:current_syntax = "rust"