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" Vim syntax file
" Language: JSON
" Maintainer: Jeroen Ruigrok van der Werven <asmodai@in-nomine.org>
" Last Change: 2009-06-16
" Version: 0.4
" {{{1
" Syntax setup {{{2
" For version 5.x: Clear all syntax items
" For version 6.x: Quit when a syntax file was already loaded
if !exists("main_syntax")
if version < 600
syntax clear
elseif exists("b:current_syntax")
finish
endif
let main_syntax = 'json'
endif
" Syntax: Strings {{{2
syn region jsonString start=+"+ skip=+\\\\\|\\"+ end=+"+ contains=jsonEscape
" Syntax: JSON does not allow strings with single quotes, unlike JavaScript.
syn region jsonStringSQ start=+'+ skip=+\\\\\|\\"+ end=+'+
" Syntax: Escape sequences {{{3
syn match jsonEscape "\\["\\/bfnrt]" contained
syn match jsonEscape "\\u\x\{4}" contained
" Syntax: Strings should always be enclosed with quotes.
syn match jsonNoQuotes "\<\a\+\>"
" Syntax: Numbers {{{2
syn match jsonNumber "-\=\<\%(0\|[1-9]\d*\)\%(\.\d\+\)\=\%([eE][-+]\=\d\+\)\=\>"
" Syntax: An integer part of 0 followed by other digits is not allowed.
syn match jsonNumError "-\=\<0\d\.\d*\>"
" Syntax: Boolean {{{2
syn keyword jsonBoolean true false
" Syntax: Null {{{2
syn keyword jsonNull null
" Syntax: Braces {{{2
syn match jsonBraces "[{}\[\]]"
" Define the default highlighting. {{{1
" For version 5.7 and earlier: only when not done already
" For version 5.8 and later: only when an item doesn't have highlighting yet
if version >= 508 || !exists("did_json_syn_inits")
if version < 508
let did_json_syn_inits = 1
command -nargs=+ HiLink hi link <args>
else
command -nargs=+ HiLink hi def link <args>
endif
HiLink jsonString String
HiLink jsonEscape Special
HiLink jsonNumber Number
HiLink jsonBraces Operator
HiLink jsonNull Function
HiLink jsonBoolean Boolean
HiLink jsonNumError Error
HiLink jsonStringSQ Error
HiLink jsonNoQuotes Error
delcommand HiLink
endif
let b:current_syntax = "json"
if main_syntax == 'json'
unlet main_syntax
endif
" Vim settings {{{2
" vim: ts=8 fdm=marker
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