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if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'v') == -1
" Vim syntax file
" Language: V
" Maintainer: Oliver Kelton (https://github.com/ollykel)
" Last Change: 2019 Jun 13
" NOTE: largely based on go.vim, maintained by David Barnett
" see David Barnett (https://github.com/google/vim-ft-go)
" Options:
" There are some options for customizing the highlighting; the recommended
" settings are the default values, but you can write:
" let OPTION_NAME = 0
" in your ~/.vimrc file to disable particular options. You can also write:
" let OPTION_NAME = 1
" to enable particular options. At present, all options default to on.
"
" - g:v_highlight_array_whitespace_error
" Highlights white space after "[]".
" - g:v_highlight_chan_whitespace_error
" Highlights white space around the communications operator that don't
" follow the standard style.
" Highlights commonly used library types (io.Reader, etc.).
" - g:v_highlight_space_tab_error
" Highlights instances of tabs following spaces.
" - g:v_highlight_trailing_whitespace_error
" Highlights trailing white space.
" Quit when a (custom) syntax file was already loaded
if exists('b:current_syntax')
finish
endif
if !exists('g:v_highlight_array_whitespace_error')
let g:v_highlight_array_whitespace_error = 1
endif
if !exists('g:v_highlight_chan_whitespace_error')
let g:v_highlight_chan_whitespace_error = 1
endif
if !exists('g:v_highlight_space_tab_error')
let g:v_highlight_space_tab_error = 1
endif
if !exists('g:v_highlight_trailing_whitespace_error')
let g:v_highlight_trailing_whitespace_error = 1
endif
if !exists('g:v_highlight_function_calls')
let g:v_highlight_function_calls = 1
endif
if !exists('g:v_highlight_fields')
let g:v_highlight_fields = 1
endif
syn case match
syn match vDeclType "\<\(struct\|interface\|type\|enum\)\>"
syn keyword vDeclaration pub mut var const
hi def link vDeclType Keyword
hi def link vDeclaration Keyword
syn keyword vDirective module import
hi def link vDirective Statement
syn region vIncluded display contained start=+"+ skip=+\\\\\|\\"+ end=+"+
syn match vIncluded display contained "<[^>]*>"
syn match vFlagDefinition display contained "\s\i[^\n]*"
hi def link vIncluded vString
hi def link vFlagDefinition vString
syn match vInclude display "^\s*\zs\(%:\|#\)\s*include\>\s*["<]" contains=vIncluded
syn match vFlag display "^\s*\zs\(%:\|#\)\s*flag\>\s*[^\n]*" contains=vFlagDefinition
syn region vShebang display start=/^#!/ end=/$/
hi def link vInclude Include
hi def link vFlag Include
hi def link vShebang Include
" Keywords within functions
syn keyword vStatement defer go goto return break continue
hi def link vStatement Statement
syn keyword vConditional if else match or
hi def link vConditional Conditional
syn keyword vRepeat for in
hi def link vRepeat Repeat
syn match vCodeGen /$if\>/
" XXX Enable when compile-time code-gen is implemented in V
" syn match vCodeGen /\.fields\>/
" syn match vCodeGen /\.$\i*\>/
hi def link vCodeGen Identifier
" Predefined types
syn keyword vType chan map bool string error voidptr
syn keyword vSignedInts int i8 i16 i64 rune intptr
syn keyword vUnsignedInts byte u16 u32 u64 byteptr
syn keyword vFloats f32 f64 floatptr
" XXX Enable when complex numbers are implemented in V
" syn keyword vComplexes complex64 complex128
hi def link vType Type
hi def link vSignedInts Type
hi def link vUnsignedInts Type
hi def link vFloats Type
" XXX Enable when complex numbers implemented in V
" hi def link vComplexes Type
" Treat fn specially: it's a declaration at the start of a line, but a type
" elsewhere. Order matters here.
syn match vDeclaration /\<fn\>/
syn match vDeclaration contained /\<fn\>/
" Predefined functions and values
syn keyword vBuiltins assert C
syn keyword vBuiltins complex exit imag
syn keyword vBuiltins print println eprint eprintln
syn keyword vBuiltins malloc copy memdup isnil
syn keyword vBuiltins panic recover
syn match vBuiltins /\<json\.\(encode\|decode\)\>/
hi def link vBuiltins Keyword
syn keyword vConstants true false
hi def link vConstants Keyword
" Comments; their contents
syn keyword vTodo contained TODO FIXME XXX BUG
hi def link vTodo Todo
syn cluster vCommentGroup contains=vTodo
syn region vComment start="/\*" end="\*/" contains=@vCommentGroup,@Spell
syn region vComment start="//" end="$" contains=@vCommentGroup,@Spell
hi def link vComment Comment
" V escapes
syn match vStringVar display contained +\$[0-9A-Za-z\._]*\([(][^)]*[)]\)\?+
syn match vStringVar display contained "\${[^}]*}"
syn match vStringSpeChar display contained +\\[abfnrtv\\'"]+
syn match vStringX display contained "\\x\x\{1,2}"
syn match vStringU display contained "\\u\x\{4}"
syn match vStringBigU display contained "\\U\x\{8}"
syn match vStringError display contained +\\[^0-7xuUabfnrtv\\'"]+
hi def link vStringVar Special
hi def link vStringSpeChar Special
hi def link vStringX Special
hi def link vStringU Special
hi def link vStringBigU Special
hi def link vStringError Error
" Characters and their contents
syn cluster vCharacterGroup contains=vStringSpeChar,vStringVar,vStringX,vStringU,vStringBigU
syn region vCharacter start=+`+ end=+`+ contains=@vCharacterGroup
hi def link vCharacter Character
" Strings and their contents
syn cluster vStringGroup contains=@vCharacterGroup,vStringError
syn region vString start=+"+ skip=+\\\\\|\\'+ end=+"+ contains=@vStringGroup
syn region vString start=+'+ skip=+\\\\\|\\'+ end=+'+ contains=@vStringGroup
syn region vRawString start=+r"+ skip=+\\\\\|\\'+ end=+"+
syn region vRawString start=+r'+ skip=+\\\\\|\\'+ end=+'+
hi def link vString String
hi def link vRawString String
" Regions
syn region vBlock start="{" end="}" transparent fold
syn region vParen start='(' end=')' transparent
" Integers
syn match vDecimalInt "\<\d\+\([Ee]\d\+\)\?\>"
syn match vOctalInt "\<0o\o\+\>"
hi def link vDecimalInt Integer
hi def link vOctalInt Integer
hi def link Integer Number
" Floating point
syn match vFloat "\<\d\+\.\d*\([Ee][-+]\d\+\)\?\>"
syn match vFloat "\<\.\d\+\([Ee][-+]\d\+\)\?\>"
syn match vFloat "\<\d\+[Ee][-+]\d\+\>"
hi def link vFloat Float
hi def link Float Number
" Imaginary literals
" XXX Enable when complex numbers are implemented in V
" syn match vImaginary "\<\d\+i\>"
" syn match vImaginary "\<\d\+\.\d*\([Ee][-+]\d\+\)\?i\>"
" syn match vImaginary "\<\.\d\+\([Ee][-+]\d\+\)\?i\>"
" syn match vImaginary "\<\d\+[Ee][-+]\d\+i\>"
"
" hi def link vImaginary Number
" Generics
syn match vGenericBrackets display contained "[<>]"
syn match vInterfaceDeclaration display "\s*\zsinterface\s*\i*\s*<[^>]*>" contains=vDeclType,vGenericBrackets
syn match vStructDeclaration display "\s*\zsstruct\s*\i*\s*<[^>]*>" contains=vDeclType,vGenericBrackets
" vFunctionName only appears when v_highlight_function_calls set
syn match vFuncDeclaration display "\s*\zsfn\s*\i*\s*<[^>]*>" contains=vFunctionName,vDeclaration,vGenericBrackets
hi def link vGenericBrackets Identifier
" Spaces after "[]"
if v_highlight_array_whitespace_error != 0
syn match vSpaceError display "\(\[\]\)\@<=\s\+"
endif
" Spacing errors around the 'chan' keyword
if v_highlight_chan_whitespace_error != 0
" receive-only annotation on chan type
syn match vSpaceError display "\(<-\)\@<=\s\+\(chan\>\)\@="
" send-only annotation on chan type
syn match vSpaceError display "\(\<chan\)\@<=\s\+\(<-\)\@="
" value-ignoring receives in a few contexts
syn match vSpaceError display "\(\(^\|[={(,;]\)\s*<-\)\@<=\s\+"
endif
" Space-tab error
if v_highlight_space_tab_error != 0
syn match vSpaceError display " \+\t"me=e-1
endif
" Trailing white space error
if v_highlight_trailing_whitespace_error != 0
syn match vSpaceError display excludenl "\s\+$"
endif
hi def link vSpaceError Error
" Function calls and Fields are from: https://github.com/fatih/vim-go/blob/master/syntax/go.vim
" Function calls;
if v_highlight_function_calls
syn match vFunctionCall /\w\+\ze\s*(/ contains=vBuiltins,vDeclaration
syn match vFunctionName display contained /\s\w\+/
hi def link vFunctionName Special
endif
hi def link vFunctionCall Special
" Fields;
if v_highlight_fields
" 1. Match a sequence of word characters coming after a '.'
" 2. Require the following but dont match it: ( \@= see :h E59)
" - The symbols: / - + * % OR
" - The symbols: [] {} <> ) OR
" - The symbols: \n \r space OR
" - The symbols: , : .
" 3. Have the start of highlight (hs) be the start of matched
" pattern (s) offsetted one to the right (+1) (see :h E401)
syn match vField /\.\w\+\
\%(\%([\/\-\+*%]\)\|\
\%([\[\]{}<\>\)]\)\|\
\%([\!=\^|&]\)\|\
\%([\n\r\ ]\)\|\
\%([,\:.]\)\)\@=/hs=s+1
endif
hi def link vField Identifier
" Search backwards for a global declaration to start processing the syntax.
"syn sync match vSync grouphere NONE /^\(const\|var\|type\|func\)\>/
" There's a bug in the implementation of grouphere. For now, use the
" following as a more expensive/less precise workaround.
syn sync minlines=500
let b:current_syntax = 'vlang'
" vim: sw=2 sts=2 et
endif
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