303 lines
15 KiB
VimL
303 lines
15 KiB
VimL
" 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: July 18, 2014
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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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" Fold settings {{{1
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if has("folding") && exists('g:rust_fold') && g:rust_fold != 0
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setlocal foldmethod=syntax
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if g:rust_fold == 2
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setlocal foldlevel<
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else
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setlocal foldlevel=99
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endif
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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 rustOperator as
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syn match rustAssert "\<assert\(\w\)*!" contained
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syn match rustFail "\<fail\(\w\)*!" 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 for in if impl let
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syn keyword rustKeyword loop once proc pub
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syn keyword rustKeyword return super
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syn keyword rustKeyword unsafe virtual while
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syn keyword rustKeyword use nextgroup=rustModPath,rustModPathInUse 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 struct enum type nextgroup=rustIdentifier skipwhite skipempty
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syn keyword rustStorage mut ref static const
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syn keyword rustInvalidBareKeyword crate
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syn keyword rustExternCrate crate contained nextgroup=rustIdentifier skipwhite skipempty
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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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syn keyword rustBoxPlacementExpr GC containedin=rustBoxPlacement
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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 be do offsetof priv pure sizeof typeof unsized yield
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" Built-in types {{{2
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syn keyword rustType int uint float 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 prelude (src/libstd/prelude.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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" Core operators {{{3
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syn keyword rustTrait Copy Send Sized Share
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syn keyword rustTrait Add Sub Mul Div Rem Neg Not
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syn keyword rustTrait BitAnd BitOr BitXor
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syn keyword rustTrait Drop Deref DerefMut
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syn keyword rustTrait Shl Shr Index IndexMut
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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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" Functions {{{3
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"syn keyword rustFunction from_str
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"syn keyword rustFunction range
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"syn keyword rustFunction drop
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" Types and traits {{{3
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syn keyword rustTrait Ascii AsciiCast OwnedAsciiCast AsciiStr
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syn keyword rustTrait IntoBytes
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syn keyword rustTrait ToCStr
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syn keyword rustTrait Char
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syn keyword rustTrait Clone
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syn keyword rustTrait PartialEq PartialOrd Eq Ord Equiv
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syn keyword rustEnum Ordering
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syn keyword rustEnumVariant Less Equal Greater
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syn keyword rustTrait Collection Mutable Map MutableMap MutableSeq
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syn keyword rustTrait Set MutableSet
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syn keyword rustTrait FromIterator Extendable ExactSize
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syn keyword rustTrait Iterator DoubleEndedIterator
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syn keyword rustTrait RandomAccessIterator CloneableIterator
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syn keyword rustTrait OrdIterator MutableDoubleEndedIterator
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syn keyword rustTrait Num NumCast CheckedAdd CheckedSub CheckedMul CheckedDiv
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syn keyword rustTrait Signed Unsigned Primitive Int Float
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syn keyword rustTrait FloatMath ToPrimitive FromPrimitive
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syn keyword rustTrait Box
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syn keyword rustTrait GenericPath Path PosixPath WindowsPath
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syn keyword rustTrait RawPtr
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syn keyword rustTrait Buffer Writer Reader Seek
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syn keyword rustTrait Str StrVector StrSlice OwnedStr
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syn keyword rustTrait IntoMaybeOwned StrAllocating
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syn keyword rustTrait ToString IntoStr
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syn keyword rustTrait Tuple1 Tuple2 Tuple3 Tuple4
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syn keyword rustTrait Tuple5 Tuple6 Tuple7 Tuple8
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syn keyword rustTrait Tuple9 Tuple10 Tuple11 Tuple12
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syn keyword rustTrait CloneableVector ImmutableCloneableVector
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syn keyword rustTrait MutableCloneableVector MutableOrdVector
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syn keyword rustTrait ImmutableVector MutableVector
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syn keyword rustTrait ImmutableEqVector ImmutableOrdVector
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syn keyword rustTrait Vector VectorVector
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syn keyword rustTrait MutableVectorAllocating
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syn keyword rustTrait String
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syn keyword rustTrait Vec
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"syn keyword rustFunction sync_channel channel
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syn keyword rustTrait SyncSender Sender Receiver
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"syn keyword rustFunction spawn
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"syn keyword rustConstant GC
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syn keyword rustSelf self
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syn keyword rustBoolean true false
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" Other syntax {{{2
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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 rustModPathInUse "\w\(\w\)*" contained " only for 'use path;'
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syn match rustModPathSep "::"
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" rustModPathInUse is split out from rustModPath so that :syn-include can get the group list right.
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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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syn match rustMacro '\w\(\w\)*!' contains=rustAssert,rustFail
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syn match rustMacro '#\w\(\w\)*' contains=rustAssert,rustFail
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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\{4}\|U\x\{8}\)/
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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,rustDeriving
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syn region rustDeriving start="deriving(" end=")" contained contains=rustTrait
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" Number literals
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syn match rustDecNumber display "\<[0-9][0-9_]*\%([iu]\%(8\|16\|32\|64\)\=\)\="
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syn match rustHexNumber display "\<0x[a-fA-F0-9_]\+\%([iu]\%(8\|16\|32\|64\)\=\)\="
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syn match rustOctNumber display "\<0o[0-7_]\+\%([iu]\%(8\|16\|32\|64\)\=\)\="
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syn match rustBinNumber display "\<0b[01_]\+\%([iu]\%(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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" (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\{4}\|U\x\{8}\)\)'\)\@!/ 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 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\{4}\|U\x\{8}\)\)'/ contains=rustEscape,rustEscapeUnicode,rustEscapeError,rustCharacterInvalid
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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 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 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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" 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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" TODO: 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 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 rustOperator Operator
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hi def link rustKeyword Keyword
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hi def link rustReservedKeyword Error
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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 rustModPathInUse rustModPath
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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 rustCommentLine Comment
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hi def link rustCommentLineDoc SpecialComment
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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 rustAssert PreCondit
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hi def link rustFail 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 rustDeriving PreProc
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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 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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hi def link rustBoxPlacementExpr rustKeyword
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" Other Suggestions:
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" hi rustAttribute ctermfg=cyan
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" hi rustDeriving ctermfg=cyan
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" hi rustAssert ctermfg=yellow
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" hi rustFail 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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