home/rc/filetype/janet.kak
2022-05-26 17:08:15 +02:00

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# http://janet-lang.org
# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
# Detection
# ‾‾‾‾‾‾‾‾‾
hook global BufCreate .*[.](janet|jdn) %{
set-option buffer filetype janet
}
hook global WinSetOption filetype=janet %{
require-module janet
hook window ModeChange pop:insert:.* -group janet-trim-indent janet-trim-indent
hook window InsertChar \n -group janet-indent janet-indent-on-new-line
set-option buffer extra_word_chars ! @ $ '%' ^ & * - _ + = : < > . ?
hook -once -always window WinSetOption filetype=.* %{ remove-hooks window janet-.+ }
}
hook -group janet-highlight global WinSetOption filetype=janet %{
add-highlighter window/janet ref janet
hook -once -always window WinSetOption filetype=.* %{ remove-highlighter window/janet }
}
provide-module janet %{
require-module lisp
# Highlighters
# ‾‾‾‾‾‾‾‾‾‾‾‾
add-highlighter shared/janet regions
add-highlighter shared/janet/code default-region group
add-highlighter shared/janet/comment region '(?<!\\)(?:\\\\)*\K#' '$' fill comment
add-highlighter shared/janet/comment-form region -recurse \( '(?<!\\)(?:\\\\)*\K\(comment ' '\)' fill comment
add-highlighter shared/janet/string region '(^\s+```)|(?<!\\)(?:\\\\)*\K"' '(^\s+```)|(?<!\\)(?:\\\\)*"' fill string
add-highlighter shared/janet/code/ regex \b(nil|true|false)\b 0:value
add-highlighter shared/janet/code/keyword regex \W\K:[!@$%\^&*\-_+=:<>.?\w]+ 0:value
add-highlighter shared/janet/code/number regex \W\K(?:[\-+]?\dx?[\der._+a-f]*)\b 0:value
add-highlighter shared/janet/code/function-definition regex \((?:defn|fn)\s([!@$%\^&*\-_+=:<>.?\w]+) 1:function
add-highlighter shared/janet/code/function-call regex \(([!@$%\^&*\-_+=:<>.?\w/]+) 1:function
add-highlighter shared/janet/code/special regex \((def|defn|var|fn|do|quote|if|splice|while|break|set|quasiquote|unquote|upscope)\b\s 1:keyword
add-highlighter shared/janet/code/ regex \W\K(&|&opt)\W 1:keyword
# Commands
# ‾‾‾‾‾‾‾‾
define-command -hidden janet-trim-indent lisp-trim-indent
declare-option \
-docstring 'regex matching the head of forms which have options *and* indented bodies' \
regex janet_special_indent_forms \
'(?:def.*|while|for|fn\*?|if(-.*|)|let.*|loop|seq|with(-.*|)|when(-.*|))|defer|do|match|var'
define-command -hidden janet-indent-on-new-line %{
# registers: i = best align point so far; w = start of first word of form
evaluate-commands -draft -save-regs '/"|^@iw' -itersel %{
execute-keys -draft 'gk"iZ'
try %{
execute-keys -draft '[bl"i<a-Z><gt>"wZ'
try %{
# If a special form, indent another j
execute-keys -draft '"wze<a-k>\A' %opt{janet_special_indent_forms} '\z<ret><a-L>s.\K.*<ret><a-;>;"i<a-Z><gt>'
} catch %{
# If not special and parameter appears on line 1, indent to parameter
execute-keys -draft '"wze<a-l>s\h\K[^\s].*<ret><a-;>;"i<a-Z><gt>'
}
}
try %{ execute-keys -draft '[rl"i<a-Z><gt>' }
try %{ execute-keys -draft '[Bl"i<a-Z><gt>' }
execute-keys -draft '"i<a-z>a&<space>'
}
}
}