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Diffstat (limited to 'autoload/filetype/go.kak')
| -rw-r--r-- | autoload/filetype/go.kak | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/autoload/filetype/go.kak b/autoload/filetype/go.kak new file mode 100644 index 0000000..4f8407c --- /dev/null +++ b/autoload/filetype/go.kak @@ -0,0 +1,174 @@ +# https://golang.org/ +# + +# Detection +# ‾‾‾‾‾‾‾‾‾ + +hook global BufCreate .*\.go %{ + set-option buffer filetype go +} + +# Initialization +# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾ + +hook global WinSetOption filetype=go %{ + require-module go + + set-option window static_words %opt{go_static_words} + + # cleanup trailing whitespaces when exiting insert mode + hook window ModeChange pop:insert:.* -group go-trim-indent %{ try %{ execute-keys -draft xs^\h+$<ret>d } } + hook window InsertChar \n -group go-indent go-indent-on-new-line + hook window InsertChar \{ -group go-indent go-indent-on-opening-curly-brace + hook window InsertChar \} -group go-indent go-indent-on-closing-curly-brace + hook window InsertChar \n -group go-comment-insert go-insert-comment-on-new-line + hook window InsertChar \n -group go-closing-delimiter-insert go-insert-closing-delimiter-on-new-line + + alias window alt go-alternative-file + + hook -once -always window WinSetOption filetype=.* %{ + remove-hooks window go-.+ + unalias window alt go-alternative-file + } +} + +hook -group go-highlight global WinSetOption filetype=go %{ + add-highlighter window/go ref go + hook -once -always window WinSetOption filetype=.* %{ remove-highlighter window/go } +} + +provide-module go %§ + +# Highlighters +# ‾‾‾‾‾‾‾‾‾‾‾‾ + +add-highlighter shared/go regions +add-highlighter shared/go/code default-region group +add-highlighter shared/go/back_string region '`' '`' fill string +add-highlighter shared/go/double_string region '"' (?<!\\)(\\\\)*" fill string +add-highlighter shared/go/single_string region "'" (?<!\\)(\\\\)*' fill string +add-highlighter shared/go/comment region /\* \*/ fill comment +add-highlighter shared/go/comment_line region '//' $ fill comment + +add-highlighter shared/go/code/numeric regex %{-?([0-9]*\.(?!0[xX]))?\b([0-9]+|0[xX][0-9a-fA-F]+)\.?([eE][+-]?[0-9]+)?i?\b} 0:value +add-highlighter shared/go/code/function regex "\b(\w*)\b\h*(?:\[[\w\s\.,]*\])?\h*\(" 1:function +add-highlighter shared/go/code/operator regex "(\+|-|\*|/|%|\+\+|--|\+=|-=|\*=|/=|%=|==|!=|>|<|>=|<=|&|&&|\|\||!|<-|:=|\.\.\.)" 1:operator + +evaluate-commands %sh{ + # Grammar + keywords='break default func interface select case defer go map struct + chan else goto package switch const fallthrough if range type + continue for import return var' + types='any bool byte chan comparable complex128 complex64 error float32 float64 int int16 int32 + int64 int8 interface intptr map rune string struct uint uint16 uint32 uint64 uint8 uintptr' + values='false true nil iota' + functions='append cap close complex copy delete imag len make new panic print println real recover' + + join() { sep=$2; eval set -- $1; IFS="$sep"; echo "$*"; } + + # Add the language's grammar to the static completion list + printf %s\\n "declare-option str-list go_static_words $(join "${keywords} ${attributes} ${types} ${values} ${functions}" ' ')" + + # Highlight keywords + printf %s " + add-highlighter shared/go/code/keyword regex \b($(join "${keywords}" '|'))\b 0:keyword + add-highlighter shared/go/code/attribute regex \b($(join "${attributes}" '|'))\b 0:attribute + add-highlighter shared/go/code/type regex \b($(join "${types}" '|'))\b 0:type + add-highlighter shared/go/code/value regex \b($(join "${values}" '|'))\b 0:value + add-highlighter shared/go/code/builtin regex \b($(join "${functions}" '|'))\b 0:builtin + " +} + +# Commands +# ‾‾‾‾‾‾‾‾ + +define-command go-alternative-file -docstring 'Jump to the alternate file (implementation ↔ test)' %{ evaluate-commands %sh{ + case $kak_buffile in + *_test.go) + altfile=${kak_buffile%_test.go}.go + test ! -f "$altfile" && echo "fail 'implementation file not found'" && exit + ;; + *.go) + altfile=${kak_buffile%.go}_test.go + test ! -f "$altfile" && echo "fail 'test file not found'" && exit + ;; + *) + echo "fail 'alternative file not found'" && exit + ;; + esac + printf "edit -- '%s'" "$(printf %s "$altfile" | sed "s/'/''/g")" +}} + +define-command -hidden go-indent-on-new-line %~ + evaluate-commands -draft -itersel %= + # preserve previous line indent + try %{ execute-keys -draft <semicolon>K<a-&> } + # cleanup trailing white spaces on the previous line + try %{ execute-keys -draft kx s \h+$ <ret>d } + try %< + try %{ # line comment + execute-keys -draft kx s ^\h*// <ret> + } catch %{ # block comment + execute-keys -draft <a-?> /\* <ret> <a-K>\*/<ret> + } + > catch %< + # indent after lines with an unclosed { or ( + try %< execute-keys -draft [c[({],[)}] <ret> <a-k> \A[({][^\n]*\n[^\n]*\n?\z <ret> j<a-gt> > + # indent after a switch's case/default statements + try %[ execute-keys -draft kx <a-k> ^\h*(case|default).*:$ <ret> j<a-gt> ] + # deindent closing brace(s) when after cursor + try %[ execute-keys -draft x <a-k> ^\h*[})] <ret> gh / [})] <ret> m <a-S> 1<a-&> ] + > + = +~ + +define-command -hidden go-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 go-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-&> ] +] + +define-command -hidden go-insert-comment-on-new-line %[ + evaluate-commands -no-hooks -draft -itersel %[ + # copy // comments prefix and following white spaces + try %{ execute-keys -draft <semicolon><c-s>kx s ^\h*\K/{2,}\h* <ret> y<c-o>P<esc> } + ] +] + +define-command -hidden go-insert-closing-delimiter-on-new-line %[ + evaluate-commands -no-hooks -draft -itersel %[ + # Wisely add '}'. + evaluate-commands -save-regs x %[ + # Save previous line indent in register x. + try %[ execute-keys -draft kxs^\h+<ret>"xy ] catch %[ reg x '' ] + try %[ + # Validate previous line and that it is not closed yet. + execute-keys -draft kx <a-k>^<c-r>x.*\{\h*\(?\h*$<ret> j}iJx <a-K>^<c-r>x\)?\h*\}<ret> + # Insert closing '}'. + execute-keys -draft o<c-r>x}<esc> + # Delete trailing '}' on the line below the '{'. + execute-keys -draft xs\}$<ret>d + ] + ] + + # Wisely add ')'. + evaluate-commands -save-regs x %[ + # Save previous line indent in register x. + try %[ execute-keys -draft kxs^\h+<ret>"xy ] catch %[ reg x '' ] + try %[ + # Validate previous line and that it is not closed yet. + execute-keys -draft kx <a-k>^<c-r>x.*\(\h*$<ret> J}iJx <a-K>^<c-r>x\)<ret> + # Insert closing ')'. + execute-keys -draft o<c-r>x)<esc> + # Delete trailing ')' on the line below the '('. + execute-keys -draft xs\)\h*\}?\h*$<ret>d + ] + ] + ] +] + +§ |