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kakoune/rc/javascript.kak
2014-07-16 13:56:40 +02:00

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# Detection
# ‾‾‾‾‾‾‾‾‾
hook global BufSetOption mimetype=text/x-javascript %{
set buffer filetype javascript
}
hook global BufCreate .*[.](js) %{
set buffer filetype javascript
}
# Highlighters
# ‾‾‾‾‾‾‾‾‾‾‾‾
addhl -group / regions -default code javascript \
double_string '"' (?<!\\)(\\\\)*" '' \
single_string "'" "'" '' \
comment // '$' '' \
comment /[*] [*]/ '' \
regex / (?<!\\)(\\\\)*/[gimy]* ''
# Regular expression flags are: g → global match, i → ignore case, m → multi-lines, y → sticky
# https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp
addhl -group /javascript/double_string fill string
addhl -group /javascript/single_string fill string
addhl -group /javascript/regex fill meta
addhl -group /javascript/comment fill comment
addhl -group /javascript/code regex \$\w* 0:identifier
addhl -group /javascript/code regex \<(document|false|null|parent|self|this|true|undefined|window)\> 0:value
addhl -group /javascript/code regex \<(Array|Boolean|Date|Function|Number|Object|RegExp|String)\> 0:type
# Keywords are collected at
# https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Lexical_grammar#Keywords
addhl -group /javascript/code regex \<(break|case|catch|class|const|continue|debugger|default|delete|do|else|export|extends|finally|for|function|if|import|in|instanceof|let|new|return|super|switch|throw|try|typeof|var|void|while|with|yield)\> 0:keyword
# Commands
# ‾‾‾‾‾‾‾‾
def -hidden _javascript_filter_around_selections %{
eval -draft -itersel %{
exec <a-x>
# remove trailing white spaces
try %{ exec -draft s \h+$ <ret> d }
}
}
def -hidden _javascript_indent_on_char "
eval -draft -itersel %_
# align closer token to its opener when alone on a line
try %/ exec -draft <a-h> <a-k> ^\h+[]}]$ <ret> m s \`|.\' <ret> 1<a-&> /
_
"
def -hidden _javascript_indent_on_new_line "
eval -draft -itersel '
# preserve previous line indent
try %{ exec -draft <space> K <a-&> }
# filter previous line
try %{ exec -draft k : _javascript_filter_around_selections <ret> }
# copy // comments prefix and following white spaces
try %{ exec -draft k x s ^\h*\K#\h* <ret> y j p }
# indent after lines beginning / ending with opener token
try %_ exec -draft k x <a-k> ^\h*[[{]|[[{]$ <ret> j <a-gt> _
'
"
# Initialization
# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
hook global WinSetOption filetype=javascript %{
addhl ref javascript
hook window InsertEnd .* -group javascript-hooks _javascript_filter_around_selections
hook window InsertChar .* -group javascript-indent _javascript_indent_on_char
hook window InsertChar \n -group javascript-indent _javascript_indent_on_new_line
}
hook global WinSetOption filetype=(?!javascript).* %{
rmhl javascript
rmhooks window javascript-indent
rmhooks window javascript-hooks
}