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: July 18, 2014
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 where while
30 syn keyword rustKeyword use nextgroup=rustModPath,rustModPathInUse 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 syn region rustMacroRepeat matchgroup=rustMacroRepeatDelimiters start="$(" end=")" contains=TOP nextgroup=rustMacroRepeatCount
53 syn match rustMacroRepeatCount ".\?[*+]" contained
54 syn match rustMacroVariable "$\w\+"
56 " Reserved (but not yet used) keywords {{{2
57 syn keyword rustReservedKeyword alignof be do offsetof priv pure sizeof typeof unsized yield
60 syn keyword rustType int uint float char bool u8 u16 u32 u64 f32
61 syn keyword rustType f64 i8 i16 i32 i64 str Self
63 " Things from the prelude (src/libstd/prelude.rs) {{{2
64 " This section is just straight transformation of the contents of the prelude,
65 " to make it easy to update.
68 syn keyword rustTrait Copy Send Sized Sync
69 syn keyword rustTrait Add Sub Mul Div Rem Neg Not
70 syn keyword rustTrait BitAnd BitOr BitXor
71 syn keyword rustTrait Drop Deref DerefMut
72 syn keyword rustTrait Shl Shr Index IndexMut
73 syn keyword rustEnum Option
74 syn keyword rustEnumVariant Some None
75 syn keyword rustEnum Result
76 syn keyword rustEnumVariant Ok Err
79 "syn keyword rustFunction from_str
80 "syn keyword rustFunction range
81 "syn keyword rustFunction drop
83 " Types and traits {{{3
84 syn keyword rustTrait Ascii AsciiCast OwnedAsciiCast AsciiStr
85 syn keyword rustTrait IntoBytes
86 syn keyword rustTrait ToCStr
87 syn keyword rustTrait Char UnicodeChar
88 syn keyword rustTrait Clone
89 syn keyword rustTrait PartialEq PartialOrd Eq Ord Equiv
90 syn keyword rustEnum Ordering
91 syn keyword rustEnumVariant Less Equal Greater
92 syn keyword rustTrait Collection Mutable Map MutableMap MutableSeq
93 syn keyword rustTrait Set MutableSet
94 syn keyword rustTrait FromIterator Extendable ExactSize
95 syn keyword rustTrait Iterator DoubleEndedIterator
96 syn keyword rustTrait RandomAccessIterator CloneableIterator
97 syn keyword rustTrait OrdIterator MutableDoubleEndedIterator
98 syn keyword rustTrait Num NumCast CheckedAdd CheckedSub CheckedMul CheckedDiv
99 syn keyword rustTrait Signed Unsigned Primitive Int Float
100 syn keyword rustTrait FloatMath ToPrimitive FromPrimitive
101 syn keyword rustTrait Box
102 syn keyword rustTrait GenericPath Path PosixPath WindowsPath
103 syn keyword rustTrait RawPtr
104 syn keyword rustTrait Buffer Writer Reader Seek
105 syn keyword rustTrait Str StrVector StrSlice
106 syn keyword rustTrait IntoMaybeOwned StrAllocating UnicodeStrSlice
107 syn keyword rustTrait ToString IntoStr
108 syn keyword rustTrait Tuple1 Tuple2 Tuple3 Tuple4
109 syn keyword rustTrait Tuple5 Tuple6 Tuple7 Tuple8
110 syn keyword rustTrait Tuple9 Tuple10 Tuple11 Tuple12
111 syn keyword rustTrait CloneableVector ImmutableCloneableVector
112 syn keyword rustTrait MutableCloneableSlice MutableOrdSlice
113 syn keyword rustTrait ImmutableSlice MutableSlice
114 syn keyword rustTrait ImmutablePartialEqSlice ImmutableOrdSlice
115 syn keyword rustTrait Slice VectorVector
116 syn keyword rustTrait MutableSliceAllocating
117 syn keyword rustTrait String
118 syn keyword rustTrait Vec
120 "syn keyword rustFunction sync_channel channel
121 syn keyword rustTrait SyncSender Sender Receiver
122 "syn keyword rustFunction spawn
124 "syn keyword rustConstant GC
126 syn keyword rustSelf self
127 syn keyword rustBoolean true false
131 " If foo::bar changes to foo.bar, change this ("::" to "\.").
132 " If foo::bar changes to Foo::bar, change this (first "\w" to "\u").
133 syn match rustModPath "\w\(\w\)*::[^<]"he=e-3,me=e-3
134 syn match rustModPathInUse "\w\(\w\)*" contained " only for 'use path;'
135 syn match rustModPathSep "::"
136 " rustModPathInUse is split out from rustModPath so that :syn-include can get the group list right.
138 syn match rustFuncCall "\w\(\w\)*("he=e-1,me=e-1
139 syn match rustFuncCall "\w\(\w\)*::<"he=e-3,me=e-3 " foo::<T>();
141 " This is merely a convention; note also the use of [A-Z], restricting it to
142 " latin identifiers rather than the full Unicode uppercase. I have not used
143 " [:upper:] as it depends upon 'noignorecase'
144 "syn match rustCapsIdent display "[A-Z]\w\(\w\)*"
146 syn match rustOperator display "\%(+\|-\|/\|*\|=\|\^\|&\||\|!\|>\|<\|%\)=\?"
147 " This one isn't *quite* right, as we could have binary-& with a reference
148 syn match rustSigil display /&\s\+[&~@*][^)= \t\r\n]/he=e-1,me=e-1
149 syn match rustSigil display /[&~@*][^)= \t\r\n]/he=e-1,me=e-1
150 " This isn't actually correct; a closure with no arguments can be `|| { }`.
151 " Last, because the & in && isn't a sigil
152 syn match rustOperator display "&&\|||"
154 syn match rustMacro '\w\(\w\)*!' contains=rustAssert,rustFail
155 syn match rustMacro '#\w\(\w\)*' contains=rustAssert,rustFail
157 syn match rustEscapeError display contained /\\./
158 syn match rustEscape display contained /\\\([nrt0\\'"]\|x\x\{2}\)/
159 syn match rustEscapeUnicode display contained /\\\(u\x\{4}\|U\x\{8}\)/
160 syn match rustStringContinuation display contained /\\\n\s*/
161 syn region rustString start=+b"+ skip=+\\\\\|\\"+ end=+"+ contains=rustEscape,rustEscapeError,rustStringContinuation
162 syn region rustString start=+"+ skip=+\\\\\|\\"+ end=+"+ contains=rustEscape,rustEscapeUnicode,rustEscapeError,rustStringContinuation,@Spell
163 syn region rustString start='b\?r\z(#*\)"' end='"\z1' contains=@Spell
165 syn region rustAttribute start="#!\?\[" end="\]" contains=rustString,rustDeriving
166 syn region rustDeriving start="deriving(" end=")" contained contains=rustTrait
169 syn match rustDecNumber display "\<[0-9][0-9_]*\%([iu]\%(8\|16\|32\|64\)\=\)\="
170 syn match rustHexNumber display "\<0x[a-fA-F0-9_]\+\%([iu]\%(8\|16\|32\|64\)\=\)\="
171 syn match rustOctNumber display "\<0o[0-7_]\+\%([iu]\%(8\|16\|32\|64\)\=\)\="
172 syn match rustBinNumber display "\<0b[01_]\+\%([iu]\%(8\|16\|32\|64\)\=\)\="
174 " Special case for numbers of the form "1." which are float literals, unless followed by
175 " an identifier, which makes them integer literals with a method call or field access.
176 " (This must go first so the others take precedence.)
177 syn match rustFloat display "\<[0-9][0-9_]*\.\%([^[:cntrl:][:space:][:punct:][:digit:]]\|_\)\@!"
178 " To mark a number as a normal float, it must have at least one of the three things integral values don't have:
179 " a decimal point and more numbers; an exponent; and a type suffix.
180 syn match rustFloat display "\<[0-9][0-9_]*\%(\.[0-9][0-9_]*\)\%([eE][+-]\=[0-9_]\+\)\=\(f32\|f64\)\="
181 syn match rustFloat display "\<[0-9][0-9_]*\%(\.[0-9][0-9_]*\)\=\%([eE][+-]\=[0-9_]\+\)\(f32\|f64\)\="
182 syn match rustFloat display "\<[0-9][0-9_]*\%(\.[0-9][0-9_]*\)\=\%([eE][+-]\=[0-9_]\+\)\=\(f32\|f64\)"
184 " For the benefit of delimitMate
185 syn region rustLifetimeCandidate display start=/&'\%(\([^'\\]\|\\\(['nrt0\\\"]\|x\x\{2}\|u\x\{4}\|U\x\{8}\)\)'\)\@!/ end=/[[:cntrl:][:space:][:punct:]]\@=\|$/ contains=rustSigil,rustLifetime
186 syn region rustGenericRegion display start=/<\%('\|[^[cntrl:][:space:][:punct:]]\)\@=')\S\@=/ end=/>/ contains=rustGenericLifetimeCandidate
187 syn region rustGenericLifetimeCandidate display start=/\%(<\|,\s*\)\@<='/ end=/[[:cntrl:][:space:][:punct:]]\@=\|$/ contains=rustSigil,rustLifetime
189 "rustLifetime must appear before rustCharacter, or chars will get the lifetime highlighting
190 syn match rustLifetime display "\'\%([^[:cntrl:][:space:][:punct:][:digit:]]\|_\)\%([^[:cntrl:][:punct:][:space:]]\|_\)*"
191 syn match rustCharacterInvalid display contained /b\?'\zs[\n\r\t']\ze'/
192 " The groups negated here add up to 0-255 but nothing else (they do not seem to go beyond ASCII).
193 syn match rustCharacterInvalidUnicode display contained /b'\zs[^[:cntrl:][:graph:][:alnum:][:space:]]\ze'/
194 syn match rustCharacter /b'\([^\\]\|\\\(.\|x\x\{2}\)\)'/ contains=rustEscape,rustEscapeError,rustCharacterInvalid,rustCharacterInvalidUnicode
195 syn match rustCharacter /'\([^\\]\|\\\(.\|x\x\{2}\|u\x\{4}\|U\x\{8}\)\)'/ contains=rustEscape,rustEscapeUnicode,rustEscapeError,rustCharacterInvalid
197 syn region rustCommentLine start="//" end="$" contains=rustTodo,@Spell
198 syn region rustCommentLineDoc start="//\%(//\@!\|!\)" end="$" contains=rustTodo,@Spell
199 syn region rustCommentBlock matchgroup=rustCommentBlock start="/\*\%(!\|\*[*/]\@!\)\@!" end="\*/" contains=rustTodo,rustCommentBlockNest,@Spell
200 syn region rustCommentBlockDoc matchgroup=rustCommentBlockDoc start="/\*\%(!\|\*[*/]\@!\)" end="\*/" contains=rustTodo,rustCommentBlockDocNest,@Spell
201 syn region rustCommentBlockNest matchgroup=rustCommentBlock start="/\*" end="\*/" contains=rustTodo,rustCommentBlockNest,@Spell contained transparent
202 syn region rustCommentBlockDocNest matchgroup=rustCommentBlockDoc start="/\*" end="\*/" contains=rustTodo,rustCommentBlockDocNest,@Spell contained transparent
203 " FIXME: this is a really ugly and not fully correct implementation. Most
204 " importantly, a case like ``/* */*`` should have the final ``*`` not being in
205 " a comment, but in practice at present it leaves comments open two levels
206 " deep. But as long as you stay away from that particular case, I *believe*
207 " the highlighting is correct. Due to the way Vim's syntax engine works
208 " (greedy for start matches, unlike Rust's tokeniser which is searching for
209 " the earliest-starting match, start or end), I believe this cannot be solved.
210 " Oh you who would fix it, don't bother with things like duplicating the Block
211 " rules and putting ``\*\@<!`` at the start of them; it makes it worse, as
212 " then you must deal with cases like ``/*/**/*/``. And don't try making it
213 " worse with ``\%(/\@<!\*\)\@<!``, either...
215 syn keyword rustTodo contained TODO FIXME XXX NB NOTE
218 " Trivial folding rules to begin with.
219 " TODO: use the AST to make really good folding
220 syn region rustFoldBraces start="{" end="}" transparent fold
222 " Default highlighting {{{1
223 hi def link rustDecNumber rustNumber
224 hi def link rustHexNumber rustNumber
225 hi def link rustOctNumber rustNumber
226 hi def link rustBinNumber rustNumber
227 hi def link rustIdentifierPrime rustIdentifier
228 hi def link rustTrait rustType
230 hi def link rustMacroRepeatCount rustMacroRepeatDelimiters
231 hi def link rustMacroRepeatDelimiters Macro
232 hi def link rustMacroVariable Define
233 hi def link rustSigil StorageClass
234 hi def link rustEscape Special
235 hi def link rustEscapeUnicode rustEscape
236 hi def link rustEscapeError Error
237 hi def link rustStringContinuation Special
238 hi def link rustString String
239 hi def link rustCharacterInvalid Error
240 hi def link rustCharacterInvalidUnicode rustCharacterInvalid
241 hi def link rustCharacter Character
242 hi def link rustNumber Number
243 hi def link rustBoolean Boolean
244 hi def link rustEnum rustType
245 hi def link rustEnumVariant rustConstant
246 hi def link rustConstant Constant
247 hi def link rustSelf Constant
248 hi def link rustFloat Float
249 hi def link rustOperator Operator
250 hi def link rustKeyword Keyword
251 hi def link rustReservedKeyword Error
252 hi def link rustConditional Conditional
253 hi def link rustIdentifier Identifier
254 hi def link rustCapsIdent rustIdentifier
255 hi def link rustModPathInUse rustModPath
256 hi def link rustModPath Include
257 hi def link rustModPathSep Delimiter
258 hi def link rustFunction Function
259 hi def link rustFuncName Function
260 hi def link rustFuncCall Function
261 hi def link rustCommentLine Comment
262 hi def link rustCommentLineDoc SpecialComment
263 hi def link rustCommentBlock rustCommentLine
264 hi def link rustCommentBlockDoc rustCommentLineDoc
265 hi def link rustAssert PreCondit
266 hi def link rustFail PreCondit
267 hi def link rustMacro Macro
268 hi def link rustType Type
269 hi def link rustTodo Todo
270 hi def link rustAttribute PreProc
271 hi def link rustDeriving PreProc
272 hi def link rustStorage StorageClass
273 hi def link rustObsoleteStorage Error
274 hi def link rustLifetime Special
275 hi def link rustInvalidBareKeyword Error
276 hi def link rustExternCrate rustKeyword
277 hi def link rustObsoleteExternMod Error
278 hi def link rustBoxPlacementParens Delimiter
279 hi def link rustBoxPlacementExpr rustKeyword
282 " hi rustAttribute ctermfg=cyan
283 " hi rustDeriving ctermfg=cyan
284 " hi rustAssert ctermfg=yellow
285 " hi rustFail ctermfg=red
286 " hi rustMacro ctermfg=magenta
288 syn sync minlines=200
289 syn sync maxlines=500
291 let b:current_syntax = "rust"