" Vim syntax file
" Language: API Notation
" Maintainer: Rubén Beltrán del Río
" Latest Revision: 22 June 2015

if exists("b:current_syntax")
  finish
endif

syn match moduleName '^[a-zA-Z0-9_.]\+\s*' nextgroup=dataType

syn match comment '\s*//\s*.*'

syn match classMembers '^\s\+\(\(<+\)\|\(<\~\)\|\(<-\)\|\(+>\)\|\(\~>\)\|\(->\)\|-\|+\|\(::\)\|#\)' nextgroup=memberName skipwhite
syn match internalOperators '\(\(<+\)\|\(<\~\)\|\(<-\)\|\(+>\)\|\(\~>\)\|\(->\)\|-\|+\|\(::\)\|#\)' contained nextgroup=memberName skipwhite
syn match returnIdentifiers '\(=>\)' nextgroup=returnValue
syn match throwIdentifiers '\(#>\)' nextgroup=throwValue

syn match memberName '\w\+' contained nextgroup=internalOperators,spacedDataType

syn region parameterList start="(" end=")" transparent contains=parameters,separators,optionalParameter,dataType
syn region optionalParameter start="\[" end="]" contains=optionalParameters contained
syn region dataType start="<" end=">" contains=dataTypes,separators contained
syn region spacedDataType start='\s\+<' end=">" contains=dataTypes,separators contained

syn match optionalParameters '\w\+' contained
syn match parameters '\w\+' contained
syn match dataTypes '\w\+' contained
syn match separators '|\|,' contained

syn match returnValue '.*' contained contains=dataType,parameters
syn match throwValue '.*' contained contains=dataType,parameters

" Nest JSON
syn include @JSON syntax/json.vim
syn region jsonBlock start='```' end='```' contains=@JSON,comment,dataType

hi def link moduleName Identifier

hi def link classMembers Operator
hi def link returnIdentifiers Operator
hi def link throwIdentifiers Operator
hi def link internalOperators Operator

hi def link memberName Special

hi def link parameters PreProc
hi def link optionalParameters Underlined
hi def link dataTypes Constant

hi def link separators Comment
hi def link comment Comment
hi def link jsonBlock Comment