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" Adapted from fatih/vim-go: autoload/go/fmt.vim
"
" Copyright 2011 The Go Authors. All rights reserved.
" Use of this source code is governed by a BSD-style
" license that can be found in the LICENSE file.
"
" Upstream: https://github.com/ziglang/zig.vim
function! zig#fmt#Format() abort
" Save cursor position and many other things.
let view = winsaveview()
if !executable('zig')
echohl Error | echomsg "no zig binary found in PATH" | echohl None
return
endif
let cmdline = 'zig fmt --stdin --ast-check'
let current_buf = bufnr('')
" The formatted code is output on stdout, the errors go on stderr.
if exists('*systemlist')
silent let out = systemlist(cmdline, current_buf)
else
silent let out = split(system(cmdline, current_buf))
endif
if len(out) == 1
if out[0] == "error: unrecognized parameter: '--ast-check'"
let cmdline = 'zig fmt --stdin'
if exists('*systemlist')
silent let out = systemlist(cmdline, current_buf)
else
silent let out = split(system(cmdline, current_buf))
endif
endif
endif
let err = v:shell_error
if err == 0
" remove undo point caused via BufWritePre.
try | silent undojoin | catch | endtry
" Replace the file content with the formatted version.
if exists('*deletebufline')
call deletebufline(current_buf, len(out), line('$'))
else
silent execute ':' . len(out) . ',' . line('$') . ' delete _'
endif
call setline(1, out)
" No errors detected, close the loclist.
call setloclist(0, [], 'r')
lclose
elseif get(g:, 'zig_fmt_parse_errors', 1)
let errors = s:parse_errors(expand('%'), out)
call setloclist(0, [], 'r', {
\ 'title': 'Errors',
\ 'items': errors,
\ })
let max_win_height = get(g:, 'zig_fmt_max_window_height', 5)
" Prevent the loclist from becoming too long.
let win_height = min([max_win_height, len(errors)])
" Open the loclist, but only if there's at least one error to show.
execute 'silent! lwindow ' . win_height
endif
call winrestview(view)
if err != 0
echohl Error | echomsg "zig fmt returned error" | echohl None
return
endif
" Run the syntax highlighter on the updated content and recompute the folds if
" needed.
syntax sync fromstart
endfunction
" parse_errors parses the given errors and returns a list of parsed errors
function! s:parse_errors(filename, lines) abort
" list of errors to be put into location list
let errors = []
for line in a:lines
let tokens = matchlist(line, '^\(.\{-}\):\(\d\+\):\(\d\+\)\s*\(.*\)')
if !empty(tokens)
call add(errors,{
\"filename": a:filename,
\"lnum": tokens[2],
\"col": tokens[3],
\"text": tokens[4],
\ })
endif
endfor
return errors
endfunction
" vim: sw=2 ts=2 et
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