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# http://ruby-lang.org
# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
# Detection
# ‾‾‾‾‾‾‾‾‾
hook global BufCreate .*(([.](rb))|(irbrc)|(pryrc)|(Brewfile)|(Capfile|[.]cap)|(Gemfile|[.]gemspec)|(Guardfile)|(Rakefile|[.]rake)|(Thorfile|[.]thor)|(Vagrantfile)) %{
set-option buffer filetype ruby
}
# Highlighters
# ‾‾‾‾‾‾‾‾‾‾‾‾
add-highlighter shared/ruby regions
add-highlighter shared/ruby/code default-region group
add-highlighter shared/ruby/double_string region '"' (?<!\\)(\\\\)*" regions
add-highlighter shared/ruby/single_string region "'" (?<!\\)(\\\\)*' fill string
add-highlighter shared/ruby/backtick region '`' (?<!\\)(\\\\)*` regions
add-highlighter shared/ruby/regex region '/' (?<!\\)(\\\\)*/[imox]* regions
add-highlighter shared/ruby/ region '#' '$' fill comment
add-highlighter shared/ruby/ region ^begin= ^=end fill comment
add-highlighter shared/ruby/ region -recurse \( '%[iqrswxIQRSWX]\(' \) fill meta
add-highlighter shared/ruby/ region -recurse \{ '%[iqrswxIQRSWX]\{' \} fill meta
add-highlighter shared/ruby/ region -recurse \[ '%[iqrswxIQRSWX]\[' \] fill meta
add-highlighter shared/ruby/ region -recurse < '%[iqrswxIQRSWX]<' > fill meta
add-highlighter shared/ruby/heredoc region '<<[-~]?(?!self)(\w+)' '^\h*(\w+)$' fill string
add-highlighter shared/ruby/division region '[\w\)\]](/|(\h+/\h+))' '\w' group # Help Kakoune to better detect /…/ literals
# Regular expression flags are: i → ignore case, m → multi-lines, o → only interpolate #{} blocks once, x → extended mode (ignore white spaces)
# Literals are: i → array of symbols, q → string, r → regular expression, s → symbol, w → array of words, x → capture shell result
add-highlighter shared/ruby/double_string/ default-region fill string
add-highlighter shared/ruby/double_string/interpolation region -recurse \{ \Q#{ \} fill meta
add-highlighter shared/ruby/backtick/ default-region fill meta
add-highlighter shared/ruby/backtick/interpolation region -recurse \{ \Q#{ \} fill meta
add-highlighter shared/ruby/regex/ default-region fill meta
add-highlighter shared/ruby/regex/interpolation region -recurse \{ \Q#{ \} fill meta
add-highlighter shared/ruby/code/ regex \b([A-Za-z]\w*:(?!:))|([$@][A-Za-z]\w*)|((?<!:):(([A-Za-z]\w*[=?!]?)|(\[\]=?)))|([A-Z]\w*|^|\h)\K::(?=[A-Z]) 0:variable
evaluate-commands %sh{
# Grammar
# Keywords are collected searching for keywords at
# https://github.com/ruby/ruby/blob/trunk/parse.y
keywords="alias|and|begin|break|case|class|def|defined|do|else|elsif|end"
keywords="${keywords}|ensure|false|for|if|in|module|next|nil|not|or|private|protected|public|redo"
keywords="${keywords}|rescue|retry|return|self|super|then|true|undef|unless|until|when|while|yield"
attributes="attr_reader|attr_writer|attr_accessor"
values="false|true|nil"
meta="require|include|extend"
# Add the language's grammar to the static completion list
printf %s\\n "hook global WinSetOption filetype=ruby %{
set-option window static_words ${keywords} ${attributes} ${values} ${meta}
}" | tr '|' ' '
# Highlight keywords
printf %s "
add-highlighter shared/ruby/code/ regex \b(${keywords})\b 0:keyword
add-highlighter shared/ruby/code/ regex \b(${attributes})\b 0:attribute
add-highlighter shared/ruby/code/ regex \b(${values})\b 0:value
add-highlighter shared/ruby/code/ regex \b(${meta})\b 0:meta
"
}
# Commands
# ‾‾‾‾‾‾‾‾
define-command ruby-alternative-file -docstring 'Jump to the alternate file (implementation ↔ test)' %{ evaluate-commands %sh{
case $kak_buffile in
*spec/*_spec.rb)
altfile=$(eval echo $(echo $kak_buffile | sed s+spec/+'*'/+';'s/_spec//))
[ ! -f $altfile ] && echo "echo -markup '{Error}implementation file not found'" && exit
;;
*.rb)
path=$kak_buffile
dirs=$(while [ $path ]; do echo $path; path=${path%/*}; done | tail -n +2)
for dir in $dirs; do
altdir=$dir/spec
if [ -d $altdir ]; then
altfile=$altdir/$(realpath $kak_buffile --relative-to $dir | sed s+[^/]'*'/++';'s/.rb$/_spec.rb/)
break
fi
done
[ ! -d $altdir ] && echo "echo -markup '{Error}spec/ not found'" && exit
;;
*)
echo "echo -markup '{Error}alternative file not found'" && exit
;;
esac
echo "edit $altfile"
}}
define-command -hidden ruby-trim-indent %{
evaluate-commands -no-hooks -draft -itersel %{
execute-keys <a-x>
# remove trailing white spaces
try %{ execute-keys -draft s \h + $ <ret> d }
}
}
define-command -hidden ruby-indent-on-char %{
evaluate-commands -no-hooks -draft -itersel %{
# align middle and end structures to start
try %{ execute-keys -draft <a-x> <a-k> ^ \h * (else|elsif) $ <ret> <a-\;> <a-?> ^ \h * (if) <ret> s \A | \z <ret> ) <a-&> }
try %{ execute-keys -draft <a-x> <a-k> ^ \h * (when) $ <ret> <a-\;> <a-?> ^ \h * (case) <ret> s \A | \z <ret> ) <a-&> }
try %{ execute-keys -draft <a-x> <a-k> ^ \h * (rescue) $ <ret> <a-\;> <a-?> ^ \h * (begin) <ret> s \A | \z <ret> ) <a-&> }
try %{ execute-keys -draft <a-x> <a-k> ^ \h * (end) $ <ret> <a-\;> <a-?> ^ \h * (begin|case|class|def|do|for|if|module|unless|until|while) <ret> s \A | \z <ret> ) <a-&> }
}
}
define-command -hidden ruby-indent-on-new-line %{
evaluate-commands -no-hooks -draft -itersel %{
# preserve previous line indent
try %{ execute-keys -draft K <a-&> }
# filter previous line
try %{ execute-keys -draft k : ruby-trim-indent <ret> }
# indent after start structure
try %{ execute-keys -draft k <a-x> <a-k> ^ \h * (begin|case|class|def|do|else|elsif|ensure|for|if|module|rescue|unless|until|when|while) \b <ret> j <a-gt> }
}
}
define-command -hidden ruby-insert-on-new-line %[
evaluate-commands -no-hooks -draft -itersel %[
# copy _#_ comment prefix and following white spaces
try %{ execute-keys -draft k <a-x> s '^\h*\K#\h*' <ret> y gh j P }
# wisely add end structure
evaluate-commands -save-regs x %[
try %{ execute-keys -draft k <a-x> s ^ \h + <ret> \" x y } catch %{ reg x '' }
try %[
evaluate-commands -draft %[
execute-keys -draft k<a-x> <a-k>^<c-r>x(begin|case|class|def|do|for|if|module|unless|until|while)<ret> # Check if previous line opens a block
# Check that we do not already have an end for this indent level, or that we have another block opening at that indent level first
execute-keys -draft Ge <a-K>\A(^\n|^<c-r>x(?!begin)(?!case)(?!class)(?!def)(?!do)(?!for)(?!if)(?!module)(?!unless)(?!until)(?!while)[^\n]*\n)+<c-r>xend$<ret>
]
execute-keys -draft o<c-r>xend<esc> # insert a new line with containing end
]
]
]
]
# Initialization
# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
hook -group ruby-highlight global WinSetOption filetype=ruby %{
add-highlighter window/ruby ref ruby
hook -once -always window WinSetOption filetype=.* %{ remove-highlighter window/ruby }
}
hook global WinSetOption filetype=ruby %{
hook window InsertChar .* -group ruby-indent ruby-indent-on-char
hook window InsertChar \n -group ruby-insert ruby-insert-on-new-line
hook window InsertChar \n -group ruby-indent ruby-indent-on-new-line
alias window alt ruby-alternative-file
hook -once -always window WinSetOption filetype=.* %{
remove-hooks window ruby-.+
unalias window alt ruby-alternative-file
}
}
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