hare.vim

[vim] Hare vim plugin
git clone https://git.torresjrjr.com/hare.vim.git
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commit d17814a5e000cb54be33696d833e027bf32abfb9
parent 4b62f25ca7abcac435802a3a9bd860f19b70ef5f
Author: Sebastian <sebastian@sebsite.pw>
Date:   Sun, 20 Feb 2022 18:43:52 -0500

Add indent script

Signed-off-by: Sebastian <sebastian@sebsite.pw>

Diffstat:
Aindent/hare.vim | 100+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 100 insertions(+), 0 deletions(-)

diff --git a/indent/hare.vim b/indent/hare.vim @@ -0,0 +1,100 @@ +" Vim indent file +" Language: Hare + +if exists("b:did_indent") + finish +endif +let b:did_indent = 1 + +if !has("cindent") || !has("eval") + finish +endif + +setlocal cindent +setlocal tabstop=8 shiftwidth=8 noexpandtab + +" L0 -> don't deindent labels +" :0 -> don't indent cases +" (s -> use one indent after a trailing ( +" m1 -> if ) starts a line, indent it the same as its matching ( +" ks -> add an extra indent to extra lines in an if expression or for expression +" j1 -> indent code inside {} one level when in parentheses +" J1 -> see j1 +" *0 -> don't search for unclosed block comments +" #1 -> don't deindent lines that begin with # +setlocal cinoptions=L0,:0,(s,m1,ks,j1,J1,*0,#1 + +" Controls which keys reindent the current line. +" 0{ -> { at beginning of line +" 0} -> } at beginning of line +" 0) -> ) at beginning of line +" !^F -> <C-f> (not inserted) +" o -> <CR> or `o` command +" O -> `O` command +" e -> else +" 0=case -> case +setlocal indentkeys=0{,0},0),!^F,o,O,e,0=case + +setlocal cinwords=if,else,for,switch,match + +setlocal indentexpr=GetHareIndent() + +function! FloorCindent(lnum) + return cindent(a:lnum) / shiftwidth() * shiftwidth() +endfunction + +function! GetHareIndent() + let line = getline(v:lnum) + let prevlnum = prevnonblank(v:lnum - 1) + let prevline = getline(prevlnum) + let prevprevline = getline(prevnonblank(prevlnum - 1)) + + " This is all very hacky and imperfect, but it's tough to do much better when + " working with regex-based indenting rules. + + " TODO: The following edge-case is still indented incorrectly: + " case => + " if (foo) { + " bar; + " }; + " | // cursor is incorrectly deindented by one shiftwidth. + " + " This only happens if the {} block is the first statement in the case body. + " If `case` is typed, the case will also be incorrectly deindented by one + " shiftwidth. Are you having fun yet? + + " Deindent cases. + if line =~# '\v^\s*case' + " If the previous line was also a case, don't do any special indenting. + if prevline =~# '\v^\s*case' + return indent(v:lnum) + end + + " If the previous line started a block, deindent by one shiftwidth. + " This handles the first case in a switch/match block. + if prevline =~# '\v\{\s*(//.*)?$' + return FloorCindent(v:lnum) - shiftwidth() + end + + " If the previous line ended in a semicolon and the line before that wasn't + " a case, deindent by one shiftwidth. + if prevline =~# '\v;\s*(//.*)?$' && prevprevline !~# '\v\=\>\s*(//.*)?$' + return FloorCindent(v:lnum) - shiftwidth() + end + + " Otherwise, do a normal cindent. + return FloorCindent(v:lnum) + endif + + " Indent the body of a case. + " If the previous line ended in a semicolon and the line before that was a + " case, don't do any special indenting. + if prevline =~# '\v;\s*(//.*)?$' && prevprevline =~# '\v\=\>\s*(//.*)?$' + return indent(v:lnum) + endif + + " If everything above is false, do a normal cindent. + return FloorCindent(v:lnum) +endfunction + +" vim: tabstop=2 shiftwidth=2 expandtab