kakoune/rc/golang.kak
2015-09-06 18:14:17 +03:00

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# https://golang.org/
#
# Detection
# ‾‾‾‾‾‾‾‾‾
hook global BufCreate .*[.](go) %{
set buffer filetype golang
}
# Highlighters
# ‾‾‾‾‾‾‾‾‾‾‾‾
addhl -group / regions -default code golang \
back_string '`' '`' '' \
double_string '"' (?<!\\)(\\\\)*" '' \
single_string "'" (?<!\\)(\\\\)*' '' \
comment '//' $ ''
addhl -group /golang/back_string fill string
addhl -group /golang/double_string fill string
addhl -group /golang/single_string fill string
addhl -group /golang/comment fill comment
addhl -group /golang/code regex %{\<(false|true|nil)\>|\<-?(0x[0-9a-zA-Z]+|\d+)\>} 0:value
addhl -group /golang/code regex \<(break|default|defer|else|fallthrough|for|func|go|goto|if|import|interface|make|new|package|range|return|select|case|switch|type|continue)\> 0:keyword
addhl -group /golang/code regex \<(bool|byte|chan|complex128|complex64|float32|float64|int|int16|int32|int64|int8|interface|intptr|map|rune|string|struct|uint|uint16|uint32|uint64|uint8)\> 0:type
addhl -group /golang/code regex \<(const)\> 0:attribute
# Commands
# ‾‾‾‾‾‾‾‾
def -hidden _golang-indent-on-new-line %~
eval -draft -itersel %=
# preserve previous line indent
try %{ exec -draft \;K<a-&> }
# indent after lines ending with { or (
try %[ exec -draft k<a-x> <a-k> [{(]\h*$ <ret> j<a-gt> ]
# cleanup trailing white spaces on the previous line
try %{ exec -draft k<a-x> s \h+$ <ret>d }
# align to opening paren of previous line
try %{ exec -draft [( <a-k> \`\([^\n]+\n[^\n]*\n?\' <ret> s \`\(\h*.|.\' <ret> '<a-;>' & }
# copy // comments prefix
try %{ exec -draft \;<c-s>k<a-x> s ^\h*\K/{2,} <ret> y<c-o><c-o>P<esc> }
# indent after a switch's case/default statements
try %[ exec -draft k<a-x> <a-k> ^\h*(case|default).*:$ <ret> j<a-gt> ]
# indent after if|else|while|for
try %[ exec -draft \;<a-F>)MB <a-k> \`(if|else|while|for)\h*\(.*\)\h*\n\h*\n?\' <ret> s \`|.\' <ret> 1<a-&>1<a-space><a-gt> ]
=
~
def -hidden _golang-indent-on-opening-curly-brace %[
# align indent with opening paren when { is entered on a new line after the closing paren
try %[ exec -draft -itersel h<a-F>)M <a-k> \`\(.*\)\h*\n\h*\{\' <ret> s \`|.\' <ret> 1<a-&> ]
]
def -hidden _golang-indent-on-closing-curly-brace %[
# align to opening curly brace when alone on a line
try %[ exec -itersel -draft <a-h><a-k>^\h+\}$<ret>hms\`|.\'<ret>1<a-&> ]
]
def golang-format-gofmt -docstring "Format the code using the gofmt utility" %{
%sh{
readonly x=$((kak_cursor_column - 1))
readonly y="${kak_cursor_line}"
echo "exec -draft %{%|gofmt<ret>}"
echo "exec gg ${y}g ${x}l"
}
}
alias global format-code golang-format-gofmt
def golang-disable-gofmt -docstring "Disable automatic code formatting" %{
rmhooks buffer golang-formatter
}
# Initialization
# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
hook global WinSetOption filetype=golang %{
addhl ref golang
# cleanup trailing whitespaces when exiting insert mode
hook window InsertEnd .* -group golang-hooks %{ try %{ exec -draft <a-x>s^\h+$<ret>d } }
hook window InsertChar \n -group golang-indent _golang-indent-on-new-line
hook window InsertChar \{ -group golang-indent _golang-indent-on-opening-curly-brace
hook window InsertChar \} -group golang-indent _golang-indent-on-closing-curly-brace
}
hook global WinSetOption filetype=(?!golang).* %{
rmhl golang
rmhooks window golang-hooks
rmhooks window golang-indent
}