118 lines
5.2 KiB
Plaintext
118 lines
5.2 KiB
Plaintext
# Nix package manager language
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# https://nixos.org/nix/manual/
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# Detection
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# ‾‾‾‾‾‾‾‾‾
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hook global BufCreate .*[.](nix) %{
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set-option buffer filetype nix
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}
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# Initialization
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# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
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hook global WinSetOption filetype=nix %{
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require-module nix
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hook window ModeChange pop:insert:.* -group nix-trim-indent nix-trim-indent
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hook window InsertChar .* -group nix-indent nix-indent-on-char
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hook window InsertChar \n -group nix-indent nix-indent-on-new-line
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hook -once -always window WinSetOption filetype=.* %{ remove-hooks window nix-.+ }
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}
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hook -group nix-highlight global WinSetOption filetype=nix %{
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add-highlighter window/nix ref nix
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hook -once -always window WinSetOption filetype=.* %{ remove-highlighter window/nix }
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}
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provide-module nix %§
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# Highlighters
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# ‾‾‾‾‾‾‾‾‾‾‾‾
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add-highlighter shared/nix regions
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add-highlighter shared/nix/code default-region group
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# Define strings. They can contain interpolated nix code,
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# which itself can contain strings.
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# Note that we currently cannot properly support nesting of the same-delimiter strings
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# because of https://github.com/mawww/kakoune/issues/1670
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add-highlighter shared/nix/double_string region '"' (?<!\\)(?:\\\\)*" regions
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# this is hard one: it is terminated by '', but ''$, ''\* and ''' are escapes.
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add-highlighter shared/nix/indent_string region "''" (?<!')(?:''')*''(?![\\'$]) regions
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add-highlighter shared/nix/comment1 region '#' '$' fill comment
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add-highlighter shared/nix/comment2 region /\* \*/ fill comment
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#add-highlighter shared/nix/code/ regex "([a-zA-Z_][a-zA-Z0-9-_.]*)\s*([=])" 1:variable
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add-highlighter shared/nix/code/ regex "(\b|-)[0-9]*\.?[0-9eE]+\b" 0:value
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add-highlighter shared/nix/double_string/str default-region fill string
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add-highlighter shared/nix/double_string/variable region -recurse \{ (?<!\\)(\\\\)*\$\{ \} ref nix
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add-highlighter shared/nix/indent_string/str default-region fill string
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# FIXME: the opening regex is not ideal. See https://nixos.org/nix/manual/#idm140737317975776
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# It should usually match "${", should match "'''${" (as "'''" is escaped itself),
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# but should not match "''${" and "''\${".
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# Seems that negative lookbehind semantics is not enough for some complex cases.
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add-highlighter shared/nix/indent_string/variable region -recurse \{ (?<![^']'')\$\{ \} ref nix
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add-highlighter shared/nix/code/ regex \b(true|false|null|let|in|with|if|then|else)\b 0:keyword
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add-highlighter shared/nix/code/ regex \b(rec)\b\s*\{ 1:keyword
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# Those are builtin functions available in global scope.
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# They should not be assigned to.
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add-highlighter shared/nix/code/ regex '[^.]\s*\b(builtins|inherit|baseNameOf|derivation|dirOf|fetchTarball|import|isNull|map|removeAttrs|throw|toString)\b\s*[^=]' 1:builtin
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add-highlighter shared/nix/code/ regex '\b\s*(\.)\s*\b' 1:operator
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add-highlighter shared/nix/code/ regex '-' 0:operator
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add-highlighter shared/nix/code/ regex '\?' 0:operator
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add-highlighter shared/nix/code/ regex '\+\+=?' 0:operator
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add-highlighter shared/nix/code/ regex '(\*|/|\+)' 0:operator
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add-highlighter shared/nix/code/ regex '!' 0:operator
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add-highlighter shared/nix/code/ regex '//=?' 0:operator
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add-highlighter shared/nix/code/ regex '[<>]=?\??' 0:operator
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add-highlighter shared/nix/code/ regex '(==|!=)' 0:operator
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add-highlighter shared/nix/code/ regex '(&&|\|\|)' 0:operator
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add-highlighter shared/nix/code/ regex '->' 0:operator
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add-highlighter shared/nix/code/ regex \bor\b 0:operator
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# override any operators matched before
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# path:
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add-highlighter shared/nix/code/ regex '\s\(*(\.?\.?/[-A-Za-z0-9/_+.]+)[;?]?' 1:meta
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# imported path:
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add-highlighter shared/nix/code/ regex <[-A-Za-z0-9/_+.]+> 0:meta
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# RFC 2396 URIs can be used without quoting. Strangely, "string" ends URL but ''indented'' one doesn't
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# List of prohibited characters was tested manually in nix-repl as it is not properly documented.
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add-highlighter shared/nix/code/ regex '([^:/?#\s]+):([^#(){}\[\]";`|\s\\]+)' 0:string
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# Commands
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# ‾‾‾‾‾‾‾‾
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define-command -hidden nix-trim-indent %{
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# remove trailing white spaces
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try %{ execute-keys -draft -itersel <a-x> s \h+$ <ret> d }
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}
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define-command -hidden nix-indent-on-char %<
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evaluate-commands -draft -itersel %<
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# align closer token to its opener when alone on a line
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try %/ execute-keys -draft <a-h> <a-k> ^\h+[\]}]$ <ret> m s \A|.\z <ret> 1<a-&> /
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>
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>
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define-command -hidden nix-indent-on-new-line %<
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evaluate-commands -draft -itersel %<
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# copy // comments prefix and following white spaces
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try %{ execute-keys -draft k <a-x> s ^\h*\K#\h* <ret> y gh j P }
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# preserve previous line indent
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try %{ execute-keys -draft <semicolon> K <a-&> }
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# filter previous line
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try %{ execute-keys -draft k : nix-trim-indent <ret> }
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# indent after lines beginning / ending with opener token
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try %_ execute-keys -draft k <a-x> <a-k> ^\h*[[{]|[[{]$ <ret> j <a-gt> _
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# deindent closer token(s) when after cursor
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try %_ execute-keys -draft <a-x> <a-k> ^\h*[}\]] <ret> gh / [}\]] <ret> m <a-S> 1<a-&> _
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>
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>
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§
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