kakoune/rc/extra/coffee.kak

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# http://coffeescript.org
# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
# require commenting.kak
# Detection
# ‾‾‾‾‾‾‾‾‾
hook global BufSetOption mimetype=text/x-coffee %{
set buffer filetype coffee
}
hook global BufCreate .*[.](coffee) %{
set buffer filetype coffee
}
# Highlighters
# ‾‾‾‾‾‾‾‾‾‾‾‾
addhl -group / regions -default code coffee \
double_string '"""' '"""' '' \
single_string "'''" "'''" '' \
comment '###' '###' '' \
regex '///' ///[gimy]* '' \
double_string '"' (?<!\\)(\\\\)*" '' \
single_string "'" "'" '' \
regex '/' (?<!\\)(\\\\)*/[gimy]* '' \
comment '#' '$' ''
# Regular expression flags are: g → global match, i → ignore case, m → multi-lines, y → sticky
# https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp
addhl -group /coffee/double_string fill string
addhl -group /coffee/double_string regions regions interpolation \Q#{ \} \{
addhl -group /coffee/double_string/regions/interpolation fill meta
addhl -group /coffee/single_string fill string
addhl -group /coffee/regex fill meta
addhl -group /coffee/regex regions regions interpolation \Q#{ \} \{
addhl -group /coffee/regex/regions/interpolation fill meta
addhl -group /coffee/comment fill comment
# Keywords are collected at
# https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Lexical_grammar#Keywords
# http://coffeescript.org/documentation/docs/lexer.html#section-63
addhl -group /coffee/code regex [$@]\w* 0:identifier
addhl -group /coffee/code regex \b(Array|Boolean|Date|Function|Number|Object|RegExp|String)\b 0:type
addhl -group /coffee/code regex \b(document|false|no|null|off|on|parent|self|this|true|undefined|window|yes)\b 0:value
addhl -group /coffee/code regex \b(and|is|isnt|not|or)\b 0:operator
addhl -group /coffee/code regex \b(break|case|catch|class|const|continue|debugger|default|delete|do|else|enum|export|extends|finally|for|function|if|implements|import|in|instanceof|interface|let|native|new|package|private|protected|public|return|static|super|switch|throw|try|typeof|var|void|while|with|yield)\b 0:keyword
# Commands
# ‾‾‾‾‾‾‾‾
def -hidden _coffee_filter_around_selections %{
eval -draft -itersel %{
exec <a-x>
# remove trailing white spaces
try %{ exec -draft s \h + $ <ret> d }
}
}
def -hidden _coffee_indent_on_new_line %{
eval -draft -itersel %{
# preserve previous line indent
try %{ exec -draft K <a-&> }
# filter previous line
try %{ exec -draft k : _coffee_filter_around_selections <ret> }
# copy '#' comment prefix and following white spaces
try %{ exec -draft k x s ^ \h * \K \# \h * <ret> y j p }
# indent after start structure
try %{ exec -draft k x <a-k> ^ \h * (case|catch|class|else|finally|for|function|if|switch|try|while|with) \b | (=|->) $ <ret> j <a-gt> }
}
}
# Initialization
# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
hook global WinSetOption filetype=coffee %{
addhl ref coffee
hook window InsertEnd .* -group coffee-hooks _coffee_filter_around_selections
hook window InsertChar \n -group coffee-indent _coffee_indent_on_new_line
set window comment_line_chars '#'
set window comment_selection_chars '###:###'
}
hook global WinSetOption filetype=(?!coffee).* %{
rmhl coffee
rmhooks window coffee-indent
rmhooks window coffee-hooks
}