home/rc/tools/rust/racer.kak

123 lines
4.9 KiB
Plaintext

hook -once global BufSetOption filetype=rust %{
require-module racer
}
provide-module racer %{
declare-option -hidden str racer_tmp_dir
declare-option -hidden completions racer_completions
define-command racer-complete -docstring "Complete the current selection with racer" %{
evaluate-commands %sh{
dir=$(mktemp -d "${TMPDIR:-/tmp}"/kak-racer.XXXXXXXX)
printf %s\\n "set-option buffer racer_tmp_dir ${dir}"
printf %s\\n "evaluate-commands -no-hooks %{ write ${dir}/buf }"
}
evaluate-commands %sh{
dir=${kak_opt_racer_tmp_dir}
(
cursor="${kak_cursor_line} $((${kak_cursor_column} - 1))"
racer_data=$(racer --interface tab-text complete-with-snippet ${cursor} ${kak_buffile} ${dir}/buf)
compl=$(printf %s\\n "${racer_data}" | awk '
BEGIN { FS = "\t"; ORS = " " }
/^PREFIX/ {
column = ENVIRON["kak_cursor_column"] + $2 - $3
print ENVIRON["kak_cursor_line"] "." column "@@" ENVIRON["kak_timestamp"]
}
/^MATCH/ {
word = $2
desc = substr($9, 2, length($9) - 2)
gsub(/\|/, "\\|", desc)
gsub(/\\n/, "\n", desc)
gsub(/!/, "!!", desc)
info = $8
gsub(/\|/, "\\|", info)
candidate = word "|info -style menu %!" desc "!|" word " {MenuInfo}" info
gsub(/@/, "@@", candidate)
gsub(/~/, "~~", candidate)
print "%~" candidate "~"
}'
)
printf %s\\n "evaluate-commands -client '${kak_client}' %@ set-option 'buffer=${kak_bufname}' racer_completions ${compl%?} @" | kak -p ${kak_session}
rm -r ${dir}
) > /dev/null 2>&1 < /dev/null &
}
}
define-command racer-enable-autocomplete -docstring "Add racer completion candidates to the completer" %{
set-option window completers option=racer_completions %opt{completers}
hook window -group racer-autocomplete InsertIdle .* %{ try %{
execute-keys -draft <a-h><a-k>([\w\.]|::).\z<ret>
racer-complete
} }
alias window complete racer-complete
}
define-command racer-disable-autocomplete -docstring "Disable racer completion" %{
evaluate-commands %sh{ printf "set-option window completers %s\n" $(printf %s "${kak_opt_completers}" | sed -e "s/'option=racer_completions'//g") }
remove-hooks window racer-autocomplete
unalias window complete racer-complete
}
define-command racer-go-definition -docstring "Jump to where the rust identifier below the cursor is defined" %{
evaluate-commands %sh{
dir=$(mktemp -d "${TMPDIR:-/tmp}"/kak-racer.XXXXXXXX)
printf %s\\n "set-option buffer racer_tmp_dir ${dir}"
printf %s\\n "evaluate-commands -no-hooks %{ write ${dir}/buf }"
}
evaluate-commands %sh{
dir=${kak_opt_racer_tmp_dir}
cursor="${kak_cursor_line} $((${kak_cursor_column} - 1))"
racer_data=$(racer --interface tab-text find-definition ${cursor} "${kak_buffile}" "${dir}/buf" | head -n 1)
racer_match=$(printf %s\\n "$racer_data" | cut -f1 )
if [ "$racer_match" = "MATCH" ]; then
racer_line=$(printf %s\\n "$racer_data" | cut -f3 )
racer_column=$(printf %s\\n "$racer_data" | cut -f4 )
racer_file=$(printf %s\\n "$racer_data" | cut -f5 )
printf %s\\n "edit -existing '$racer_file' $racer_line $racer_column"
case ${racer_file} in
"${RUST_SRC_PATH}"* | "${CARGO_HOME:-$HOME/.cargo}"/registry/src/*)
printf %s\\n "set-option buffer readonly true";;
esac
else
printf %s\\n "echo -debug 'racer could not find a definition'"
fi
}
}
define-command racer-show-doc -docstring "Show the documentation about the rust identifier below the cursor" %{
evaluate-commands %sh{
dir=$(mktemp -d "${TMPDIR:-/tmp}"/kak-racer.XXXXXXXX)
printf %s\\n "set-option buffer racer_tmp_dir ${dir}"
printf %s\\n "evaluate-commands -no-hooks %{ write ${dir}/buf }"
}
evaluate-commands %sh{
dir=${kak_opt_racer_tmp_dir}
cursor="${kak_cursor_line} ${kak_cursor_column}"
racer_data=$(racer --interface tab-text complete-with-snippet ${cursor} "${kak_buffile}" "${dir}/buf" | sed -n 2p )
racer_match=$(printf %s\\n "$racer_data" | cut -f1)
if [ "$racer_match" = "MATCH" ]; then
racer_doc=$(
printf %s\\n "$racer_data" |
cut -f9 |
sed -e '
# Remove leading and trailing quotes
s/^"\(.*\)"$/\1/g
# Escape all @ so that it can be properly used in the string expansion
s/@/\\@/g
')
printf "info %%@$racer_doc@"
else
printf %s\\n "echo -debug 'racer could not find a definition'"
fi
}
}
}