kakoune/rc/filetype/json.kak

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# http://json.org
# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
# Detection
# ‾‾‾‾‾‾‾‾‾
hook global BufCreate .*[.](json) %{
set-option buffer filetype json
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}
# Initialization
# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
hook global WinSetOption filetype=json %{
require-module json
hook window ModeChange insert:.* -group json-trim-indent json-trim-indent
hook window InsertChar .* -group json-indent json-indent-on-char
hook window InsertChar \n -group json-indent json-indent-on-new-line
hook -once -always window WinSetOption filetype=.* %{ remove-hooks window json-.+ }
}
hook -group json-highlight global WinSetOption filetype=json %{
add-highlighter window/json ref json
hook -once -always window WinSetOption filetype=.* %{ remove-highlighter window/json }
}
provide-module json %(
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# Highlighters
# ‾‾‾‾‾‾‾‾‾‾‾‾
add-highlighter shared/json regions
add-highlighter shared/json/code default-region group
add-highlighter shared/json/string region '"' (?<!\\)(\\\\)*" fill string
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add-highlighter shared/json/code/ regex \b(true|false|null|\d+(?:\.\d+)?(?:[eE][+-]?\d*)?)\b 0:value
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# Commands
# ‾‾‾‾‾‾‾‾
define-command -hidden json-trim-indent %{
# remove trailing white spaces
try %{ execute-keys -draft -itersel <a-x> s \h+$ <ret> d }
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}
define-command -hidden json-indent-on-char %<
evaluate-commands -draft -itersel %<
# align closer token to its opener when alone on a line
try %< execute-keys -draft <a-h> <a-k> ^\h+[]}]$ <ret> m s \A|.\z <ret> 1<a-&> >
>
>
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define-command -hidden json-indent-on-new-line %<
evaluate-commands -draft -itersel %<
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# preserve previous line indent
try %{ execute-keys -draft \; K <a-&> }
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# filter previous line
try %{ execute-keys -draft k : json-trim-indent <ret> }
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# indent after lines beginning with opener token
try %< execute-keys -draft k <a-x> <a-k> ^\h*[[{] <ret> j <a-gt> >
>
>
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)