runtime(json5): include syntax script for json5 (#13356)
Merging syntax file from gutenye/json5.vim, modified to include proper
vim header.
See: https://github.com/vim/vim/issues/8499
Signed-off-by: Mazunki Hoksaas <rolferen@gmail.com>
Co-authored-by: Guten Ye <ywzhaifei@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/syntax/json5.vim b/runtime/syntax/json5.vim
new file mode 100644
index 0000000..5b01d33
--- /dev/null
+++ b/runtime/syntax/json5.vim
@@ -0,0 +1,73 @@
+" Vim syntax file
+" Language: JSON5
+" Maintainer: Mazunki Hoksaas rolferen@gmail.com
+" Previous Maintainer: Guten Ye <ywzhaifei@gmail.com>
+" Last Change: 2019 Apr 1
+" Version: vim9.0-1
+" URL: https://github.com/json5/json5
+
+" Syntax setup
+if exists('b:current_syntax') && b:current_syntax == 'json5'
+ finish
+endif
+
+" Numbers
+syn match json5Number "[-+]\=\%(0\|[1-9]\d*\)\%(\.\d*\)\=\%([eE][-+]\=\d\+\)\="
+syn match json5Number "[-+]\=\%(\.\d\+\)\%([eE][-+]\=\d\+\)\="
+syn match json5Number "[-+]\=0[xX]\x*"
+syn match json5Number "[-+]\=Infinity\|NaN"
+
+" An integer part of 0 followed by other digits is not allowed
+syn match json5NumError "[-+]\=0\d\(\d\|\.\)*"
+
+" A hexadecimal number cannot have a fractional part
+syn match json5NumError "[-+]\=0x\x*\.\x*"
+
+" Strings
+syn region json5String start=+"+ skip=+\\\\\|\\"+ end=+"+ contains=json5Escape,@Spell
+syn region json5String start=+'+ skip=+\\\\\|\\'+ end=+'+ contains=json5Escape,@Spell
+
+" Escape sequences
+syn match json5Escape "\\['\"\\bfnrtv]" contained
+syn match json5Escape "\\u\x\{4}" contained
+
+" Boolean
+syn keyword json5Boolean true false
+
+" Null
+syn keyword json5Null null
+
+" Delimiters and Operators
+syn match json5Delimiter ","
+syn match json5Operator ":"
+
+" Braces
+syn match json5Braces "[{}\[\]]"
+
+" Keys
+syn match json5Key /@\?\%(\I\|\$\)\%(\i\|\$\)*\s*\ze::\@!/ contains=@Spell
+syn match json5Key /"\([^"]\|\\"\)\{-}"\ze\s*:/ contains=json5Escape,@Spell
+
+" Comment
+syn region json5LineComment start=+\/\/+ end=+$+ keepend contains=@Spell
+syn region json5LineComment start=+^\s*\/\/+ skip=+\n\s*\/\/+ end=+$+ keepend fold contains=@Spell
+syn region json5Comment start="/\*" end="\*/" fold contains=@Spell
+
+" Define the default highlighting
+hi def link json5String String
+hi def link json5Key Identifier
+hi def link json5Escape Special
+hi def link json5Number Number
+hi def link json5Delimiter Delimiter
+hi def link json5Operator Operator
+hi def link json5Braces Delimiter
+hi def link json5Null Keyword
+hi def link json5Boolean Boolean
+hi def link json5LineComment Comment
+hi def link json5Comment Comment
+hi def link json5NumError Error
+
+if !exists('b:current_syntax')
+ let b:current_syntax = 'json5'
+endif
+