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Automatic insert completion using ctags

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Fixup ctags-complete command to search for partial matches for the
current selection in all tags files listed in ctagsfiles option. Format
the results to fit the Kakoune completions type.

Add ctags-enable-autocomplete and ctags-disable-autocomplete commands to
add and remove an InsertIdle hook to select the previous word and call
ctags-complete.

Use the ctags_min_chars option to limit the noise of returning many
completions for very short selections.
This commit is contained in:
Michael Mogenson 2019-04-19 17:28:43 -04:00
parent 9ffde03ca7
commit 6905b6e34a
1 changed files with 41 additions and 11 deletions
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52
rc/tools/ctags.kak
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@ -1,11 +1,15 @@
# Kakoune Exuberant CTags support script
# Kakoune CTags support script
#
# This script requires the readtags command available in ctags source but
# not installed by default
# This script requires the readtags command available in universal-ctags
declare-option -docstring "minimum characters before triggering autocomplete" \
int ctags_min_chars 3
declare-option -docstring "list of paths to tag files to parse when looking up a symbol" \
str-list ctagsfiles 'tags'
declare-option -hidden completions ctags_completions
define-command -params ..1 \
-shell-script-candidates %{
realpath() { ( cd "$(dirname "$1")"; printf "%s/%s\n" "$(pwd -P)" "$(basename "$1")" ) }
@ -59,14 +63,21 @@ If no symbol is passed then the current selection is used as symbol name} \
function path(x) { return x ~/^\// ? x : tagroot x }'
}}
define-command ctags-complete -docstring "Insert completion candidates for the current selection into the buffer's local variables" %{ evaluate-commands -draft %{
execute-keys <space>hb<a-k>^\w+$<ret>
nop %sh{ {
compl=$(readtags -p "$kak_selection" | cut -f 1 | sort | uniq | sed -e 's/:/\\:/g' | sed -e 's/\n/:/g' )
compl="${kak_cursor_line}.${kak_cursor_column}+${#kak_selection}@${kak_timestamp}:${compl}"
printf %s\\n "set-option buffer=$kak_bufname ctags_completions '${compl}'" | kak -p ${kak_session}
} > /dev/null 2>&1 < /dev/null & }
}}
define-command ctags-complete -docstring "Complete the current selection" %{
nop %sh{
(
header="${kak_cursor_line}.${kak_cursor_column}@${kak_timestamp}"
compl=$(
eval "set -- $kak_opt_ctagsfiles"
for ctagsfile in "$@"; do
readtags -p -t "$ctagsfile" ${kak_selection}
done | awk '{ uniq[$1]++ } END { for (elem in uniq) printf " %1$s||%1$s", elem }'
)
printf %s\\n "evaluate-commands -client ${kak_client} set-option buffer=${kak_bufname} ctags_completions ${header}${compl}" | \
kak -p ${kak_session}
) > /dev/null 2>&1 < /dev/null &
}
}
define-command ctags-funcinfo -docstring "Display ctags information about a selected function" %{
evaluate-commands -draft %{
@ -132,3 +143,22 @@ define-command ctags-update-tags -docstring 'Update tags for the given file' %{
printf %s\\n "evaluate-commands -client $kak_client echo -markup '{Information}${msg}'" | kak -p ${kak_session}
) > /dev/null 2>&1 < /dev/null & }
}
define-command ctags-enable-autocomplete -docstring "Enable automatic ctags completion" %{
set-option window completers "option=ctags_completions" %opt{completers}
hook window -group ctags-autocomplete InsertIdle .* %{
try %{
evaluate-commands -draft %{ # select previous word >= ctags_min_chars
execute-keys "<space>b_<a-k>.{%opt{ctags_min_chars},}<ret>"
ctags-complete # run in draft context to preserve selection
}
}
}
}
define-command ctags-disable-autocomplete -docstring "Disable automatic ctags completion" %{
evaluate-commands %sh{
printf "set-option window completers %s\n" $(printf %s "${kak_opt_completers}" | sed -e "s/'option=ctags_completions'//g")
}
remove-hooks window ctags-autocomplete
}