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" Vim syntax file " Language: Rust " Maintainer: Patrick Walton <pcwalton@mozilla.com> " Maintainer: Ben Blum <bblum@cs.cmu.edu> " Maintainer: Chris Morgan <me@chrismorgan.info> " Last Change: Feb 24, 2016 " For bugs, patches and license go to https://github.com/rust-lang/rust.vim if version < 600 syntax clear elseif exists("b:current_syntax") finish endif " Syntax definitions {{{1 " Basic keywords {{{2 syn keyword rustConditional match if else syn keyword rustRepeat for loop while syn keyword rustTypedef type nextgroup=rustIdentifier skipwhite skipempty syn keyword rustStructure struct enum nextgroup=rustIdentifier skipwhite skipempty syn keyword rustUnion union nextgroup=rustIdentifier skipwhite skipempty contained syn match rustUnionContextual /\<union\_s\+\%([^[:cntrl:][:space:][:punct:][:digit:]]\|_\)\%([^[:cntrl:][:punct:][:space:]]\|_\)*/ transparent contains=rustUnion syn keyword rustOperator as syn match rustAssert "\<assert\(\w\)*!" contained syn match rustPanic "\<panic\(\w\)*!" contained syn keyword rustKeyword break syn keyword rustKeyword box nextgroup=rustBoxPlacement skipwhite skipempty syn keyword rustKeyword continue syn keyword rustKeyword extern nextgroup=rustExternCrate,rustObsoleteExternMod skipwhite skipempty syn keyword rustKeyword fn nextgroup=rustFuncName skipwhite skipempty syn keyword rustKeyword in impl let syn keyword rustKeyword pub nextgroup=rustPubScope skipwhite skipempty syn keyword rustKeyword return syn keyword rustSuper super syn keyword rustKeyword unsafe where syn keyword rustKeyword use nextgroup=rustModPath skipwhite skipempty " FIXME: Scoped impl's name is also fallen in this category syn keyword rustKeyword mod trait nextgroup=rustIdentifier skipwhite skipempty syn keyword rustStorage move mut ref static const syn match rustDefault /\<default\ze\_s\+\(impl\|fn\|type\|const\)\>/ syn keyword rustInvalidBareKeyword crate syn keyword rustPubScopeCrate crate contained syn match rustPubScopeDelim /[()]/ contained syn match rustPubScope /([^()]*)/ contained contains=rustPubScopeDelim,rustPubScopeCrate,rustSuper,rustModPath,rustModPathSep,rustSelf transparent syn keyword rustExternCrate crate contained nextgroup=rustIdentifier,rustExternCrateString skipwhite skipempty " This is to get the `bar` part of `extern crate "foo" as bar;` highlighting. syn match rustExternCrateString /".*"\_s*as/ contained nextgroup=rustIdentifier skipwhite transparent skipempty contains=rustString,rustOperator syn keyword rustObsoleteExternMod mod contained nextgroup=rustIdentifier skipwhite skipempty syn match rustIdentifier contains=rustIdentifierPrime "\%([^[:cntrl:][:space:][:punct:][:digit:]]\|_\)\%([^[:cntrl:][:punct:][:space:]]\|_\)*" display contained syn match rustFuncName "\%([^[:cntrl:][:space:][:punct:][:digit:]]\|_\)\%([^[:cntrl:][:punct:][:space:]]\|_\)*" display contained syn region rustBoxPlacement matchgroup=rustBoxPlacementParens start="(" end=")" contains=TOP contained " Ideally we'd have syntax rules set up to match arbitrary expressions. Since " we don't, we'll just define temporary contained rules to handle balancing " delimiters. syn region rustBoxPlacementBalance start="(" end=")" containedin=rustBoxPlacement transparent syn region rustBoxPlacementBalance start="\[" end="\]" containedin=rustBoxPlacement transparent " {} are handled by rustFoldBraces syn region rustMacroRepeat matchgroup=rustMacroRepeatDelimiters start="$(" end=")" contains=TOP nextgroup=rustMacroRepeatCount syn match rustMacroRepeatCount ".\?[*+]" contained syn match rustMacroVariable "$\w\+" " Reserved (but not yet used) keywords {{{2 syn keyword rustReservedKeyword alignof become do offsetof priv pure sizeof typeof unsized yield abstract virtual final override macro " Built-in types {{{2 syn keyword rustType isize usize char bool u8 u16 u32 u64 u128 f32 syn keyword rustType f64 i8 i16 i32 i64 i128 str Self " Things from the libstd v1 prelude (src/libstd/prelude/v1.rs) {{{2 " This section is just straight transformation of the contents of the prelude, " to make it easy to update. " Reexported core operators {{{3 syn keyword rustTrait Copy Send Sized Sync syn keyword rustTrait Drop Fn FnMut FnOnce " Reexported functions {{{3 " There’s no point in highlighting these; when one writes drop( or drop::< it " gets the same highlighting anyway, and if someone writes `let drop = …;` we " don’t really want *that* drop to be highlighted. "syn keyword rustFunction drop " Reexported types and traits {{{3 syn keyword rustTrait Box syn keyword rustTrait ToOwned syn keyword rustTrait Clone syn keyword rustTrait PartialEq PartialOrd Eq Ord syn keyword rustTrait AsRef AsMut Into From syn keyword rustTrait Default syn keyword rustTrait Iterator Extend IntoIterator syn keyword rustTrait DoubleEndedIterator ExactSizeIterator syn keyword rustEnum Option syn keyword rustEnumVariant Some None syn keyword rustEnum Result syn keyword rustEnumVariant Ok Err syn keyword rustTrait SliceConcatExt syn keyword rustTrait String ToString syn keyword rustTrait Vec " Other syntax {{{2 syn keyword rustSelf self syn keyword rustBoolean true false " If foo::bar changes to foo.bar, change this ("::" to "\."). " If foo::bar changes to Foo::bar, change this (first "\w" to "\u"). syn match rustModPath "\w\(\w\)*::[^<]"he=e-3,me=e-3 syn match rustModPathSep "::" syn match rustFuncCall "\w\(\w\)*("he=e-1,me=e-1 syn match rustFuncCall "\w\(\w\)*::<"he=e-3,me=e-3 " foo::<T>(); " This is merely a convention; note also the use of [A-Z], restricting it to " latin identifiers rather than the full Unicode uppercase. I have not used " [:upper:] as it depends upon 'noignorecase' "syn match rustCapsIdent display "[A-Z]\w\(\w\)*" syn match rustOperator display "\%(+\|-\|/\|*\|=\|\^\|&\||\|!\|>\|<\|%\)=\?" " This one isn't *quite* right, as we could have binary-& with a reference syn match rustSigil display /&\s\+[&~@*][^)= \t\r\n]/he=e-1,me=e-1 syn match rustSigil display /[&~@*][^)= \t\r\n]/he=e-1,me=e-1 " This isn't actually correct; a closure with no arguments can be `|| { }`. " Last, because the & in && isn't a sigil syn match rustOperator display "&&\|||" " This is rustArrowCharacter rather than rustArrow for the sake of matchparen, " so it skips the ->; see http://stackoverflow.com/a/30309949 for details. syn match rustArrowCharacter display "->" syn match rustQuestionMark display "?\([a-zA-Z]\+\)\@!" syn match rustMacro '\w\(\w\)*!' contains=rustAssert,rustPanic syn match rustMacro '#\w\(\w\)*' contains=rustAssert,rustPanic syn match rustEscapeError display contained /\\./ syn match rustEscape display contained /\\\([nrt0\\'"]\|x\x\{2}\)/ syn match rustEscapeUnicode display contained /\\u{\x\{1,6}}/ syn match rustStringContinuation display contained /\\\n\s*/ syn region rustString start=+b"+ skip=+\\\\\|\\"+ end=+"+ contains=rustEscape,rustEscapeError,rustStringContinuation syn region rustString start=+"+ skip=+\\\\\|\\"+ end=+"+ contains=rustEscape,rustEscapeUnicode,rustEscapeError,rustStringContinuation,@Spell syn region rustString start='b\?r\z(#*\)"' end='"\z1' contains=@Spell syn region rustAttribute start="#!\?\[" end="\]" contains=rustString,rustDerive,rustCommentLine,rustCommentBlock,rustCommentLineDocError,rustCommentBlockDocError syn region rustDerive start="derive(" end=")" contained contains=rustDeriveTrait " This list comes from src/libsyntax/ext/deriving/mod.rs " Some are deprecated (Encodable, Decodable) or to be removed after a new snapshot (Show). syn keyword rustDeriveTrait contained Clone Hash RustcEncodable RustcDecodable Encodable Decodable PartialEq Eq PartialOrd Ord Rand Show Debug Default FromPrimitive Send Sync Copy " Number literals syn match rustDecNumber display "\<[0-9][0-9_]*\%([iu]\%(size\|8\|16\|32\|64\|128\)\)\=" syn match rustHexNumber display "\<0x[a-fA-F0-9_]\+\%([iu]\%(size\|8\|16\|32\|64\|128\)\)\=" syn match rustOctNumber display "\<0o[0-7_]\+\%([iu]\%(size\|8\|16\|32\|64\|128\)\)\=" syn match rustBinNumber display "\<0b[01_]\+\%([iu]\%(size\|8\|16\|32\|64\|128\)\)\=" " Special case for numbers of the form "1." which are float literals, unless followed by " an identifier, which makes them integer literals with a method call or field access, " or by another ".", which makes them integer literals followed by the ".." token. " (This must go first so the others take precedence.) syn match rustFloat display "\<[0-9][0-9_]*\.\%([^[:cntrl:][:space:][:punct:][:digit:]]\|_\|\.\)\@!" " To mark a number as a normal float, it must have at least one of the three things integral values don't have: " a decimal point and more numbers; an exponent; and a type suffix. syn match rustFloat display "\<[0-9][0-9_]*\%(\.[0-9][0-9_]*\)\%([eE][+-]\=[0-9_]\+\)\=\(f32\|f64\)\=" syn match rustFloat display "\<[0-9][0-9_]*\%(\.[0-9][0-9_]*\)\=\%([eE][+-]\=[0-9_]\+\)\(f32\|f64\)\=" syn match rustFloat display "\<[0-9][0-9_]*\%(\.[0-9][0-9_]*\)\=\%([eE][+-]\=[0-9_]\+\)\=\(f32\|f64\)" " For the benefit of delimitMate syn region rustLifetimeCandidate display start=/&'\%(\([^'\\]\|\\\(['nrt0\\\"]\|x\x\{2}\|u{\x\{1,6}}\)\)'\)\@!/ end=/[[:cntrl:][:space:][:punct:]]\@=\|$/ contains=rustSigil,rustLifetime syn region rustGenericRegion display start=/<\%('\|[^[cntrl:][:space:][:punct:]]\)\@=')\S\@=/ end=/>/ contains=rustGenericLifetimeCandidate syn region rustGenericLifetimeCandidate display start=/\%(<\|,\s*\)\@<='/ end=/[[:cntrl:][:space:][:punct:]]\@=\|$/ contains=rustSigil,rustLifetime "rustLifetime must appear before rustCharacter, or chars will get the lifetime highlighting syn match rustLifetime display "\'\%([^[:cntrl:][:space:][:punct:][:digit:]]\|_\)\%([^[:cntrl:][:punct:][:space:]]\|_\)*" syn match rustLabel display "\'\%([^[:cntrl:][:space:][:punct:][:digit:]]\|_\)\%([^[:cntrl:][:punct:][:space:]]\|_\)*:" syn match rustCharacterInvalid display contained /b\?'\zs[\n\r\t']\ze'/ " The groups negated here add up to 0-255 but nothing else (they do not seem to go beyond ASCII). syn match rustCharacterInvalidUnicode display contained /b'\zs[^[:cntrl:][:graph:][:alnum:][:space:]]\ze'/ syn match rustCharacter /b'\([^\\]\|\\\(.\|x\x\{2}\)\)'/ contains=rustEscape,rustEscapeError,rustCharacterInvalid,rustCharacterInvalidUnicode syn match rustCharacter /'\([^\\]\|\\\(.\|x\x\{2}\|u{\x\{1,6}}\)\)'/ contains=rustEscape,rustEscapeUnicode,rustEscapeError,rustCharacterInvalid syn match rustShebang /\%^#![^[].*/ syn region rustCommentLine start="//" end="$" contains=rustTodo,@Spell syn region rustCommentLineDoc start="//\%(//\@!\|!\)" end="$" contains=rustTodo,@Spell syn region rustCommentLineDocError start="//\%(//\@!\|!\)" end="$" contains=rustTodo,@Spell contained syn region rustCommentBlock matchgroup=rustCommentBlock start="/\*\%(!\|\*[*/]\@!\)\@!" end="\*/" contains=rustTodo,rustCommentBlockNest,@Spell syn region rustCommentBlockDoc matchgroup=rustCommentBlockDoc start="/\*\%(!\|\*[*/]\@!\)" end="\*/" contains=rustTodo,rustCommentBlockDocNest,@Spell syn region rustCommentBlockDocError matchgroup=rustCommentBlockDocError start="/\*\%(!\|\*[*/]\@!\)" end="\*/" contains=rustTodo,rustCommentBlockDocNestError,@Spell contained syn region rustCommentBlockNest matchgroup=rustCommentBlock start="/\*" end="\*/" contains=rustTodo,rustCommentBlockNest,@Spell contained transparent syn region rustCommentBlockDocNest matchgroup=rustCommentBlockDoc start="/\*" end="\*/" contains=rustTodo,rustCommentBlockDocNest,@Spell contained transparent syn region rustCommentBlockDocNestError matchgroup=rustCommentBlockDocError start="/\*" end="\*/" contains=rustTodo,rustCommentBlockDocNestError,@Spell contained transparent " FIXME: this is a really ugly and not fully correct implementation. Most " importantly, a case like ``/* */*`` should have the final ``*`` not being in " a comment, but in practice at present it leaves comments open two levels " deep. But as long as you stay away from that particular case, I *believe* " the highlighting is correct. Due to the way Vim's syntax engine works " (greedy for start matches, unlike Rust's tokeniser which is searching for " the earliest-starting match, start or end), I believe this cannot be solved. " Oh you who would fix it, don't bother with things like duplicating the Block " rules and putting ``\*\@<!`` at the start of them; it makes it worse, as " then you must deal with cases like ``/*/**/*/``. And don't try making it " worse with ``\%(/\@<!\*\)\@<!``, either... syn keyword rustTodo contained TODO FIXME XXX NB NOTE " Folding rules {{{2 " Trivial folding rules to begin with. " FIXME: use the AST to make really good folding syn region rustFoldBraces start="{" end="}" transparent fold " Default highlighting {{{1 hi def link rustDecNumber rustNumber hi def link rustHexNumber rustNumber hi def link rustOctNumber rustNumber hi def link rustBinNumber rustNumber hi def link rustIdentifierPrime rustIdentifier hi def link rustTrait rustType hi def link rustDeriveTrait rustTrait hi def link rustMacroRepeatCount rustMacroRepeatDelimiters hi def link rustMacroRepeatDelimiters Macro hi def link rustMacroVariable Define hi def link rustSigil StorageClass hi def link rustEscape Special hi def link rustEscapeUnicode rustEscape hi def link rustEscapeError Error hi def link rustStringContinuation Special hi def link rustString String hi def link rustCharacterInvalid Error hi def link rustCharacterInvalidUnicode rustCharacterInvalid hi def link rustCharacter Character hi def link rustNumber Number hi def link rustBoolean Boolean hi def link rustEnum rustType hi def link rustEnumVariant rustConstant hi def link rustConstant Constant hi def link rustSelf Constant hi def link rustFloat Float hi def link rustArrowCharacter rustOperator hi def link rustOperator Operator hi def link rustKeyword Keyword hi def link rustTypedef Keyword " More precise is Typedef, but it doesn't feel right for Rust hi def link rustStructure Keyword " More precise is Structure hi def link rustUnion rustStructure hi def link rustPubScopeDelim Delimiter hi def link rustPubScopeCrate rustKeyword hi def link rustSuper rustKeyword hi def link rustReservedKeyword Error hi def link rustRepeat Conditional hi def link rustConditional Conditional hi def link rustIdentifier Identifier hi def link rustCapsIdent rustIdentifier hi def link rustModPath Include hi def link rustModPathSep Delimiter hi def link rustFunction Function hi def link rustFuncName Function hi def link rustFuncCall Function hi def link rustShebang Comment hi def link rustCommentLine Comment hi def link rustCommentLineDoc SpecialComment hi def link rustCommentLineDocError Error hi def link rustCommentBlock rustCommentLine hi def link rustCommentBlockDoc rustCommentLineDoc hi def link rustCommentBlockDocError Error hi def link rustAssert PreCondit hi def link rustPanic PreCondit hi def link rustMacro Macro hi def link rustType Type hi def link rustTodo Todo hi def link rustAttribute PreProc hi def link rustDerive PreProc hi def link rustDefault StorageClass hi def link rustStorage StorageClass hi def link rustObsoleteStorage Error hi def link rustLifetime Special hi def link rustLabel Label hi def link rustInvalidBareKeyword Error hi def link rustExternCrate rustKeyword hi def link rustObsoleteExternMod Error hi def link rustBoxPlacementParens Delimiter hi def link rustQuestionMark Special " Other Suggestions: " hi rustAttribute ctermfg=cyan " hi rustDerive ctermfg=cyan " hi rustAssert ctermfg=yellow " hi rustPanic ctermfg=red " hi rustMacro ctermfg=magenta syn sync minlines=200 syn sync maxlines=500 let b:current_syntax = "rust"