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kakoune/rc/ragel.kak
2014-10-07 09:16:19 +01:00

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# http://complang.org/ragel
# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
# ragel.kak does not try to detect host language.
# Detection
# ‾‾‾‾‾‾‾‾‾
hook global BufSetOption mimetype=text/x-ragel %{
set buffer filetype ragel
}
hook global BufCreate .*[.](ragel|rl) %{
set buffer filetype ragel
}
# Highlighters
# ‾‾‾‾‾‾‾‾‾‾‾‾
addhl -group / regions -default code ragel \
string '"' (?<!\\)(\\\\)*" '' \
string "'" "'" '' \
comment '#' '$' ''
addhl -group /ragel/string fill string
addhl -group /ragel/comment fill comment
addhl -group /ragel/code regex \<(true|false)\> 0:value
addhl -group /ragel/code regex '%%\{|\}%%|<\w+>' 0:identifier
addhl -group /ragel/code regex :=|=>|->|:>|:>>|<: 0:operator
addhl -group /ragel/code regex \<(action|alnum|alpha|any|ascii|case|cntrl|contained|context|data|digit|empty|eof|err|error|exec|export|exports|extend|fblen|fbreak|fbuf|fc|fcall|fcurs|fentry|fexec|fgoto|fhold|first_final|fnext|fpc|fret|from|fstack|ftargs|graph|import|include|init|inwhen|lerr|lower|machine|nocs|noend|noerror|nofinal|noprefix|outwhen|postpop|prepush|print|punct|range|space|start|to|upper|when|write|xdigit|zlen)\> 0:keyword
# Commands
# ‾‾‾‾‾‾‾‾
def -hidden _ragel_filter_around_selections %{
eval -draft -itersel %{
exec <a-x>
# remove trailing white spaces
try %{ exec -draft s \h+$ <ret> d }
}
}
def -hidden _ragel_indent_on_char "
eval -draft -itersel %_
# align closer token to its opener when alone on a line
try %/ exec -draft <a-h> <a-k> ^\h+[]})]$ <ret> m s \`|.\' <ret> 1<a-&> /
try %/ exec -draft <a-h> <a-k> ^\h+ [*]$ <ret> <a-?> [*]$ <ret> s \`|.\' <ret> 1<a-&> /
_
"
def -hidden _ragel_indent_on_new_line "
eval -draft -itersel '
# preserve previous line indent
try %{ exec -draft <space> K <a-&> }
# filter previous line
try %{ exec -draft k : _ragel_filter_around_selections <ret> }
# copy _#_ comment prefix and following white spaces
try %{ exec -draft k x s ^\h*\K#\h* <ret> y j p }
# indent after lines ending with opener token
try %_ exec -draft k x <a-k> [[{(*]$ <ret> j <a-gt> _
'
"
# Initialization
# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
hook global WinSetOption filetype=ragel %{
addhl ref ragel
hook window InsertEnd .* -group ragel-hooks _ragel_filter_around_selections
hook window InsertChar .* -group ragel-indent _ragel_indent_on_char
hook window InsertChar \n -group ragel-indent _ragel_indent_on_new_line
}
hook global WinSetOption filetype=(?!ragel).* %{
rmhl ragel
rmhooks window ragel-indent
rmhooks window ragel-hooks
}