--- /dev/null
+" Vim syntax file
+" Language: PKL
+" Maintainer: Jan Claußen <jan DOT claussen10 AT web DOT de>
+" Last Change: 2025 Sep 24
+
+if exists("b:current_syntax")
+ finish
+endif
+
+" We use line-continuation here
+let s:cpo_save = &cpo
+set cpo&vim
+
+" Needed to properly highlight multiline strings
+syn sync fromstart
+
+" PKL supports non-Unicode identifiers. So we modify the keyword character
+" class to include them
+syn iskeyword @,48-57,192-255,$,_
+
+" Declare a variable for identifiers
+let s:id = '\%(\K\+\d*[_$]*\K*\d*[_$]*\)'
+
+" --- Decorator ---
+exe $'syn match pklDecorator "@{s:id}\{{1,}}"'
+
+" --- Comments ---
+syn match pklComment "\/\{2}.*"
+syn match pklDocComment "\/\{3}.*"
+syn region pklMultiComment start="\/\*" end="\*\/" keepend fold
+
+" --- Strings ---
+syn region pklString start=+"+ end=+"+ contains=pklEscape,pklUnicodeEscape,pklStringInterpolation oneline
+syn region pklMultiString start=+"""+ skip=+\\."+ end=+"""+ contains=pklEscape,pklUnicodeEscape keepend fold
+syn match pklEscape "\\[\\nt0rbaeuf"']" contained containedin=pklString,pklMultiString
+syn match pklUnicode "[0-9A-Fa-f]\+" contained
+
+" --- String interpolation ---
+" Standard interpolation
+syn region pklStringInterpolation matchgroup=pklDelimiter
+ \ start=+\\(+ end=+)+ contains=pklNumbers,pklOperator,pklIdentifier,pklFunction,pklParen,pklString
+ \ contained containedin=pklString,pklMultiString oneline
+" Unicode escape sequences
+syn region pklUnicodeEscape matchgroup=pklDelimiter
+ \ start=+\\u{+ end=+}+ contains=pklUnicode
+ \ contained containedin=pklString,pklMultiString
+
+" --- Basic data types ---
+syn keyword pklType
+ \ UInt UInt8 UInt16 UInt32 UInt64 UInt128
+ \ Int Int8 Int16 Int32 Int64 Int128
+ \ Float
+ \ Number
+ \ String
+ \ Boolean
+ \ Null
+ \ Any
+
+syn keyword pklCollections
+ \ Map Mapping
+ \ List Listing
+ \ Set
+
+" --- Custom string delimiters ---
+function! s:DefineCustomStringDelimiters(n)
+ for x in range(1, a:n)
+ exe $'syn region pklString{x}Pound start=+{repeat("#", x)}"+ end=+"{repeat("#", x)}+ contains=pklStringInterpolation{x}Pound,pklEscape{x}Pound oneline'
+ exe $'hi def link pklString{x}Pound String'
+
+ exe $'syn region pklMultiString{x}Pound start=+{repeat("#", x)}"""+ end=+"""{repeat("#", x)}+ contains=pklStringInterpolation{x}Pound,pklEscape{x}Pound keepend fold'
+ exe $'hi def link pklMultiString{x}Pound String'
+
+ exe $'syn match pklEscape{x}Pound "\\{repeat("#", x) }[\\nt0rbaeuf"'']" contained containedin=pklString{x}Pound,pklMultiString{x}Pound'
+ exe $'hi def link pklEscape{x}Pound SpecialChar'
+
+ exe $'syn region pklStringInterpolation{x}Pound matchgroup=pklDelimiter start=+\\{repeat("#", x)}(+ end=+)+ contains=pklNumbers,pklOperator,pklIdentifier,pklFunction,pklParen,pklString contained containedin=pklString{x}Pound,pklMultiString{x}Pound oneline'
+
+ exe $'syn region pklUnicodeEscape{x}Pound matchgroup=pklDelimiter start=+\\{repeat("#", x)}u{{+ end=+}}+ contains=pklUnicode contained containedin=pklString{x}Pound,pklMultiString{x}Pound'
+ exe $'hi def link pklUnicodeEscape{x}Pound SpecialChar'
+ endfor
+endfunction
+
+call s:DefineCustomStringDelimiters(5)
+
+" --- Keywords ---
+syn keyword pklBoolean false true
+syn keyword pklClass outer super this module new
+syn keyword pklConditional if else when
+syn keyword pklConstant null NaN Infinity
+syn keyword pklException throw
+syn keyword pklInclude amends import extends as
+syn keyword pklKeyword function let out is
+syn keyword pklModifier abstract const external fixed hidden local open
+syn keyword pklReserved case delete override protected record switch vararg
+syn keyword pklRepeat for in
+syn keyword pklSpecial nothing unknown
+syn keyword pklStatement trace read
+syn keyword pklStruct typealias class
+
+" Include all unicode letters
+exe $'syn match pklIdentifier "{s:id}"'
+
+" Explicitely make keywords identifiers with backticks
+syn region pklIdentifierExplicit start=+`+ end=+`+
+
+syn match pklOperator ",\||\|+\|*\|->\|?\|-\|==\|=\|!=\|!" contained containedin=pklType
+
+" --- Numbers ---
+" decimal numbers
+syn match pklNumbers display transparent "\<\d\|\.\d" contains=pklNumber,pklFloat,pklOctal
+syn match pklNumber display contained "\d\%(\d\+\)*\>"
+" hex numbers
+syn match pklNumber display contained "0x\x\%('\=\x\+\)\>"
+" binary numbers
+syn match pklNumber display contained "0b[01]\%('\=[01]\+\)\>"
+" octal numbers
+syn match pklOctal display contained "0o\o\+\>"
+
+"floating point number, with dot, optional exponent
+syn match pklFloat display contained "\d\+\.\d\+\%(e[-+]\=\d\+\)\="
+"floating point number, starting with a dot, optional exponent
+syn match pklFloat display contained "\.\d\+\%(e[-+]\=\d\+\)\=\>"
+"floating point number, without dot, with exponent
+syn match pklFloat display contained "\d\+e[-+]\=\d\+\>"
+
+" --- Brackets, operators, functions ---
+syn region pklParen matchgroup=pklBrackets start='(' end=')' contains=ALLBUT,pklUnicode transparent
+syn region pklBracket matchgroup=pklBrackets start='\[\|<::\@!' end=']\|:>' contains=ALLBUT,pklUnicode transparent
+syn region pklBlock matchgroup=pklBrackets start="{" end="}" contains=ALLBUT,pklUnicode fold transparent
+
+exe $'syn match pklFunction "\<\h{s:id}*\>\ze\_s*[?|\*]\?(" contains=pklType'
+
+" --- Highlight links ---
+hi def link pklBoolean Boolean
+hi def link pklBrackets Delimiter
+hi def link pklClass Statement
+hi def link pklCollections Type
+hi def link pklComment Comment
+hi def link pklConditional Conditional
+hi def link pklConstant Constant
+hi def link pklDecorator Special
+hi def link pklDelimiter Delimiter
+hi def link pklDocComment Comment
+hi def link pklEscape SpecialChar
+hi def link pklException Exception
+hi def link pklFloat Number
+hi def link pklFunction Function
+hi def link pklInclude Include
+hi def link pklKeyword Keyword
+hi def link pklModifier StorageClass
+hi def link pklMultiComment Comment
+hi def link pklMultiString String
+hi def link pklNumber Number
+hi def link pklNumbers Number
+hi def link pklOctal Number
+hi def link pklRepeat Repeat
+hi def link pklReserved Error
+hi def link pklShebang Comment
+hi def link pklSpecial Special
+hi def link pklStatement Statement
+hi def link pklString String
+hi def link pklStruct Structure
+hi def link pklType Type
+hi def link pklUnicodeEscape SpecialChar
+
+let b:current_syntax = "pkl"
+
+let &cpo = s:cpo_save
+unlet s:cpo_save
projects / thirdparty / vim.git / commitdiff
