Mercurial > vim
view runtime/indent/rust.vim @ 27970:212c5894b8b1 v8.2.4510
patch 8.2.4510: Vim9: shortening commands leads to confusing script
Commit: https://github.com/vim/vim/commit/204852ae2adfdde10c656ca7f14e5b4207a69172
Author: Bram Moolenaar <Bram@vim.org>
Date: Sat Mar 5 12:56:44 2022 +0000
patch 8.2.4510: Vim9: shortening commands leads to confusing script
Problem: Vim9: shortening commands leads to confusing script.
Solution: In Vim9 script require at least ":cont" for ":continue", "const"
instead of "cons", "break" instead of "brea", "catch" instead of
"cat", "else" instead of "el" "elseif" instead of "elsei" "endfor"
instead of "endfo" "endif" instead of "en" "endtry" instead of
"endt", "finally" instead of "fina", "throw" instead of "th",
"while" instead of "wh".
author | Bram Moolenaar <Bram@vim.org> |
---|---|
date | Sat, 05 Mar 2022 14:00:03 +0100 |
parents | 63b0b7b79b25 |
children | 2ff007677dba |
line wrap: on
line source
" Vim indent file " Language: Rust " Author: Chris Morgan <me@chrismorgan.info> " Last Change: 2017 Jun 13 " For bugs, patches and license go to https://github.com/rust-lang/rust.vim " Only load this indent file when no other was loaded. if exists("b:did_indent") finish endif let b:did_indent = 1 setlocal cindent setlocal cinoptions=L0,(0,Ws,J1,j1 setlocal cinkeys=0{,0},!^F,o,O,0[,0] " Don't think cinwords will actually do anything at all... never mind setlocal cinwords=for,if,else,while,loop,impl,mod,unsafe,trait,struct,enum,fn,extern " Some preliminary settings setlocal nolisp " Make sure lisp indenting doesn't supersede us setlocal autoindent " indentexpr isn't much help otherwise " Also do indentkeys, otherwise # gets shoved to column 0 :-/ setlocal indentkeys=0{,0},!^F,o,O,0[,0] setlocal indentexpr=GetRustIndent(v:lnum) " Only define the function once. if exists("*GetRustIndent") finish endif let s:save_cpo = &cpo set cpo&vim " Come here when loading the script the first time. function! s:get_line_trimmed(lnum) " Get the line and remove a trailing comment. " Use syntax highlighting attributes when possible. " NOTE: this is not accurate; /* */ or a line continuation could trick it let line = getline(a:lnum) let line_len = strlen(line) if has('syntax_items') " If the last character in the line is a comment, do a binary search for " the start of the comment. synID() is slow, a linear search would take " too long on a long line. if synIDattr(synID(a:lnum, line_len, 1), "name") =~ 'Comment\|Todo' let min = 1 let max = line_len while min < max let col = (min + max) / 2 if synIDattr(synID(a:lnum, col, 1), "name") =~ 'Comment\|Todo' let max = col else let min = col + 1 endif endwhile let line = strpart(line, 0, min - 1) endif return substitute(line, "\s*$", "", "") else " Sorry, this is not complete, nor fully correct (e.g. string "//"). " Such is life. return substitute(line, "\s*//.*$", "", "") endif endfunction function! s:is_string_comment(lnum, col) if has('syntax_items') for id in synstack(a:lnum, a:col) let synname = synIDattr(id, "name") if synname == "rustString" || synname =~ "^rustComment" return 1 endif endfor else " without syntax, let's not even try return 0 endif endfunction function GetRustIndent(lnum) " Starting assumption: cindent (called at the end) will do it right " normally. We just want to fix up a few cases. let line = getline(a:lnum) if has('syntax_items') let synname = synIDattr(synID(a:lnum, 1, 1), "name") if synname == "rustString" " If the start of the line is in a string, don't change the indent return -1 elseif synname =~ '\(Comment\|Todo\)' \ && line !~ '^\s*/\*' " not /* opening line if synname =~ "CommentML" " multi-line if line !~ '^\s*\*' && getline(a:lnum - 1) =~ '^\s*/\*' " This is (hopefully) the line after a /*, and it has no " leader, so the correct indentation is that of the " previous line. return GetRustIndent(a:lnum - 1) endif endif " If it's in a comment, let cindent take care of it now. This is " for cases like "/*" where the next line should start " * ", not " "* " as the code below would otherwise cause for module scope " Fun fact: " /*\n*\n*/" takes two calls to get right! return cindent(a:lnum) endif endif " cindent gets second and subsequent match patterns/struct members wrong, " as it treats the comma as indicating an unfinished statement:: " " match a { " b => c, " d => e, " f => g, " }; " Search backwards for the previous non-empty line. let prevlinenum = prevnonblank(a:lnum - 1) let prevline = s:get_line_trimmed(prevlinenum) while prevlinenum > 1 && prevline !~ '[^[:blank:]]' let prevlinenum = prevnonblank(prevlinenum - 1) let prevline = s:get_line_trimmed(prevlinenum) endwhile " Handle where clauses nicely: subsequent values should line up nicely. if prevline[len(prevline) - 1] == "," \ && prevline =~# '^\s*where\s' return indent(prevlinenum) + 6 endif if prevline[len(prevline) - 1] == "," \ && s:get_line_trimmed(a:lnum) !~ '^\s*[\[\]{}]' \ && prevline !~ '^\s*fn\s' \ && prevline !~ '([^()]\+,$' \ && s:get_line_trimmed(a:lnum) !~ '^\s*\S\+\s*=>' " Oh ho! The previous line ended in a comma! I bet cindent will try to " take this too far... For now, let's normally use the previous line's " indent. " One case where this doesn't work out is where *this* line contains " square or curly brackets; then we normally *do* want to be indenting " further. " " Another case where we don't want to is one like a function " definition with arguments spread over multiple lines: " " fn foo(baz: Baz, " baz: Baz) // <-- cindent gets this right by itself " " Another case is similar to the previous, except calling a function " instead of defining it, or any conditional expression that leaves " an open paren: " " foo(baz, " baz); " " if baz && (foo || " bar) { " " Another case is when the current line is a new match arm. " " There are probably other cases where we don't want to do this as " well. Add them as needed. return indent(prevlinenum) endif if !has("patch-7.4.355") " cindent before 7.4.355 doesn't do the module scope well at all; e.g.:: " " static FOO : &'static [bool] = [ " true, " false, " false, " true, " ]; " " uh oh, next statement is indented further! " Note that this does *not* apply the line continuation pattern properly; " that's too hard to do correctly for my liking at present, so I'll just " start with these two main cases (square brackets and not returning to " column zero) call cursor(a:lnum, 1) if searchpair('{\|(', '', '}\|)', 'nbW', \ 's:is_string_comment(line("."), col("."))') == 0 if searchpair('\[', '', '\]', 'nbW', \ 's:is_string_comment(line("."), col("."))') == 0 " Global scope, should be zero return 0 else " At the module scope, inside square brackets only "if getline(a:lnum)[0] == ']' || search('\[', '', '\]', 'nW') == a:lnum if line =~ "^\\s*]" " It's the closing line, dedent it return 0 else return shiftwidth() endif endif endif endif " Fall back on cindent, which does it mostly right return cindent(a:lnum) endfunction let &cpo = s:save_cpo unlet s:save_cpo