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