kakoune/rc/extra/protobuf.kak
2018-12-11 00:35:57 +01:00

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# https://developers.google.com/protocol-buffers/
# Detection
# ‾‾‾‾‾‾‾‾‾
hook global BufCreate .*\.proto$ %{
set-option buffer filetype protobuf
}
# Highlighters
# ‾‾‾‾‾‾‾‾‾‾‾‾
add-highlighter shared/protobuf regions
add-highlighter shared/protobuf/code default-region group
add-highlighter shared/protobuf/double_string region '"' (?<!\\)(\\\\)*" fill string
add-highlighter shared/protobuf/comment region /\* \*/ fill comment
add-highlighter shared/protobuf/comment_line region '//' $ fill comment
add-highlighter shared/protobuf/code/ regex %{(0x)?[0-9]+\b} 0:value
evaluate-commands %sh{
# Grammer
keywords="default|deprecated|enum|extend|import|message|oneof|option"
keywords="${keywords}|package|service|syntax"
attributes="optional|repeated|required"
types="double|float|int32|int64|uint32|uint64|sint32|sint64|fixed32|fixed64"
types="${types}|sfixed32|sfixed64|bool|string|bytes|rpc"
values="false|true"
# Add the language's grammer to the static completion list
printf '%s\n' "hook global WinSetOption filetype=protobuf %{
set-option window static_words ${keywords} ${attributes} ${types} ${values}
}" | tr '|' ' '
# Highlight keywords
printf %s "
add-highlighter shared/protobuf/code/keywords regex \b(${keywords})\b 0:keyword
add-highlighter shared/protobuf/code/attributes regex \b(${attributes})\b 0:attribute
add-highlighter shared/protobuf/code/types regex \b(${types})\b 0:type
add-highlighter shared/protobuf/code/values regex \b(${values})\b 0:value
"
}
# Commands
# ‾‾‾‾‾‾‾‾
define-command -hidden protobuf-indent-on-newline %~
evaluate-commands -draft -itersel %[
# preserve previous line indent
try %{ execute-keys -draft \;K<a-&> }
# indent after lines ending with {
try %[ execute-keys -draft k<a-x> <a-k> \{\h*$ <ret> j<a-gt> ]
# cleanup trailing white spaces on the previous line
try %{ execute-keys -draft k<a-x> s \h+$ <ret>d }
# copy // comments prefix
try %{ execute-keys -draft \;<c-s>k<a-x> s ^\h*\K/{2,}(\h*(?=\S))? <ret> y<c-o>P<esc> }
]
~
define-command -hidden protobuf-indent-on-opening-curly-brace %[
# align indent with opening paren when { is entered on a new line after the closing paren
try %[ execute-keys -draft -itersel h<a-F>)M <a-k> \A\(.*\)\h*\n\h*\{\z <ret> s \A|.\z <ret> 1<a-&> ]
]
define-command -hidden protobuf-indent-on-closing-curly-brace %[
# align to opening curly brace when alone on a line
try %[ execute-keys -itersel -draft <a-h><a-k>^\h+\}$<ret>hms\A|.\z<ret>1<a-&> ]
]
# Initialization
# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
hook -group protobuf-highlight global WinSetOption filetype=protobuf %{
add-highlighter window/protobuf ref protobuf
hook -once -always window WinSetOption filetype=.* %{ remove-highlighter window/protobuf }
}
hook global WinSetOption filetype=protobuf %[
hook -group protobuf-indent window InsertChar \n protobuf-indent-on-newline
hook -group protobuf-indent window InsertChar \{ protobuf-indent-on-opening-curly-brace
hook -group protobuf-indent window InsertChar \} protobuf-indent-on-closing-curly-brace
hook -once -always window WinSetOption filetype=.* %{ remove-hooks window protobuf-.+ }
]