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a39bf01958
Update runtime files.
Includes changing &sw to shiftwidth() for all indent scripts.
3ec574f2b5
67 lines
1.6 KiB
VimL
67 lines
1.6 KiB
VimL
" Vim indent file
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" Language: Go
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" Maintainer: David Barnett (https://github.com/google/vim-ft-go)
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" Last Change: 2017 Jun 13
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"
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" TODO:
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" - function invocations split across lines
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" - general line splits (line ends in an operator)
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if exists('b:did_indent')
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finish
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endif
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let b:did_indent = 1
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" C indentation is too far off useful, mainly due to Go's := operator.
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" Let's just define our own.
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setlocal nolisp
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setlocal autoindent
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setlocal indentexpr=GoIndent(v:lnum)
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setlocal indentkeys+=<:>,0=},0=)
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if exists('*GoIndent')
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finish
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endif
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function! GoIndent(lnum)
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let l:prevlnum = prevnonblank(a:lnum-1)
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if l:prevlnum == 0
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" top of file
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return 0
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endif
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" grab the previous and current line, stripping comments.
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let l:prevl = substitute(getline(l:prevlnum), '//.*$', '', '')
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let l:thisl = substitute(getline(a:lnum), '//.*$', '', '')
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let l:previ = indent(l:prevlnum)
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let l:ind = l:previ
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if l:prevl =~ '[({]\s*$'
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" previous line opened a block
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let l:ind += shiftwidth()
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endif
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if l:prevl =~# '^\s*\(case .*\|default\):$'
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" previous line is part of a switch statement
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let l:ind += shiftwidth()
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endif
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" TODO: handle if the previous line is a label.
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if l:thisl =~ '^\s*[)}]'
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" this line closed a block
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let l:ind -= shiftwidth()
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endif
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" Colons are tricky.
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" We want to outdent if it's part of a switch ("case foo:" or "default:").
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" We ignore trying to deal with jump labels because (a) they're rare, and
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" (b) they're hard to disambiguate from a composite literal key.
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if l:thisl =~# '^\s*\(case .*\|default\):$'
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let l:ind -= shiftwidth()
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endif
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return l:ind
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endfunction
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" vim: sw=2 sts=2 et
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