diff options
Diffstat (limited to 'syntax/rust.vim')
| -rw-r--r-- | syntax/rust.vim | 59 |
1 files changed, 52 insertions, 7 deletions
diff --git a/syntax/rust.vim b/syntax/rust.vim index 81abf942..90e5b6b6 100644 --- a/syntax/rust.vim +++ b/syntax/rust.vim @@ -9,9 +9,9 @@ if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'rust') == -1 " For bugs, patches and license go to https://github.com/rust-lang/rust.vim if version < 600 - syntax clear + syntax clear elseif exists("b:current_syntax") - finish + finish endif " Syntax definitions {{{1 @@ -29,6 +29,7 @@ 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 crate syn keyword rustKeyword extern nextgroup=rustExternCrate,rustObsoleteExternMod skipwhite skipempty syn keyword rustKeyword fn nextgroup=rustFuncName skipwhite skipempty syn keyword rustKeyword in impl let @@ -45,8 +46,6 @@ syn keyword rustKeyword mod trait nextgroup=rustIdentifier skipwhite skipe 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 @@ -155,6 +154,16 @@ syn region rustDerive start="derive(" end=")" contained contains=rustDer " 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 +" dyn keyword: It's only a keyword when used inside a type expression, so +" we make effort here to highlight it only when Rust identifiers follow it +" (not minding the case of pre-2018 Rust where a path starting with :: can +" follow). +" +" This is so that uses of dyn variable names such as in 'let &dyn = &2' +" and 'let dyn = 2' will not get highlighted as a keyword. +syn match rustKeyword "\<dyn\ze\_s\+\%([^[:cntrl:][:space:][:punct:][:digit:]]\|_\)" contains=rustDynKeyword +syn keyword rustDynKeyword dyn contained + " 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\)\)\=" @@ -174,7 +183,7 @@ syn match rustFloat display "\<[0-9][0-9_]*\%(\.[0-9][0-9_]*\)\=\%([eE " 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 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 @@ -191,11 +200,17 @@ syn region rustCommentLine star 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 rustCommentBlockDoc matchgroup=rustCommentBlockDoc start="/\*\%(!\|\*[*/]\@!\)" end="\*/" contains=rustTodo,rustCommentBlockDocNest,rustCommentBlockDocRustCode,@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 + +if exists("b:current_syntax_embed") +syn match rustCommentLine "^//" +syn match rustCommentLineDoc "^//\%(//\@!\|!\)" +endif + " 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 @@ -215,6 +230,32 @@ syn keyword rustTodo contained TODO FIXME XXX NB NOTE " FIXME: use the AST to make really good folding syn region rustFoldBraces start="{" end="}" transparent fold +if !exists("b:current_syntax_embed") + let b:current_syntax_embed = 1 + syntax include @RustCodeInComment <sfile>:p:h/rust.vim + unlet b:current_syntax_embed + + " We borrow the rules from rust’s src/librustdoc/html/markdown.rs, so that + " we only highlight as Rust what it would perceive as Rust (almost; it’s + " possible to trick it if you try hard, and indented code blocks aren’t + " supported because Markdown is a menace to parse and only mad dogs and + " Englishmen would try to handle that case correctly in this syntax file). + syn region rustCommentLinesDocRustCode matchgroup=rustCommentDocCodeFence start='^\z(\s*//[!/]\s*```\)[^A-Za-z0-9_-]*\%(\%(should_panic\|no_run\|ignore\|allow_fail\|rust\|test_harness\|compile_fail\|E\d\{4}\)\%([^A-Za-z0-9_-]\+\|$\)\)*$' end='^\z1$' keepend contains=@RustCodeInComment + syn region rustCommentBlockDocRustCode matchgroup=rustCommentDocCodeFence start='^\z(\%(\s*\*\)\?\s*```\)[^A-Za-z0-9_-]*\%(\%(should_panic\|no_run\|ignore\|allow_fail\|rust\|test_harness\|compile_fail\|E\d\{4}\)\%([^A-Za-z0-9_-]\+\|$\)\)*$' end='^\z1$' keepend contains=@RustCodeInComment,rustCommentBlockDocStar + " Strictly, this may or may not be correct; this code, for example, would + " mishighlight: + " + " /** + " ```rust + " println!("{}", 1 + " * 1); + " ``` + " */ + " + " … but I don’t care. Balance of probability, and all that. + syn match rustCommentBlockDocStar /^\s*\*\s\?/ contained +endif + " Default highlighting {{{1 hi def link rustDecNumber rustNumber hi def link rustHexNumber rustNumber @@ -246,6 +287,7 @@ hi def link rustFloat Float hi def link rustArrowCharacter rustOperator hi def link rustOperator Operator hi def link rustKeyword Keyword +hi def link rustDynKeyword rustKeyword 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 @@ -269,7 +311,9 @@ hi def link rustCommentLineDoc SpecialComment hi def link rustCommentLineDocError Error hi def link rustCommentBlock rustCommentLine hi def link rustCommentBlockDoc rustCommentLineDoc +hi def link rustCommentBlockDocStar rustCommentBlockDoc hi def link rustCommentBlockDocError Error +hi def link rustCommentDocCodeFence rustCommentLineDoc hi def link rustAssert PreCondit hi def link rustPanic PreCondit hi def link rustMacro Macro @@ -282,7 +326,6 @@ 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 @@ -300,4 +343,6 @@ syn sync maxlines=500 let b:current_syntax = "rust" +" vim: set et sw=4 sts=4 ts=8: + endif |