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			108 lines
		
	
	
		
			2.9 KiB
		
	
	
	
		
			VimL
		
	
	
	
	
	
			
		
		
	
	
			108 lines
		
	
	
		
			2.9 KiB
		
	
	
	
		
			VimL
		
	
	
	
	
	
" Author: Stephen Sugden <stephen@stephensugden.com>
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"
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" Adapted from https://github.com/fatih/vim-go
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" For bugs, patches and license go to https://github.com/rust-lang/rust.vim
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if !exists("g:rustfmt_autosave")
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	let g:rustfmt_autosave = 0
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endif
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if !exists("g:rustfmt_command")
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	let g:rustfmt_command = "rustfmt"
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endif
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if !exists("g:rustfmt_options")
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	let g:rustfmt_options = ""
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endif
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if !exists("g:rustfmt_fail_silently")
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	let g:rustfmt_fail_silently = 0
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endif
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let s:got_fmt_error = 0
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function! s:RustfmtCommandRange(filename, line1, line2)
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	let l:arg = {"file": shellescape(a:filename), "range": [a:line1, a:line2]}
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	return printf("%s %s --write-mode=overwrite --file-lines '[%s]'", g:rustfmt_command, g:rustfmt_options, json_encode(l:arg))
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endfunction
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function! s:RustfmtCommand(filename)
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	return g:rustfmt_command . " --write-mode=overwrite " . g:rustfmt_options . " " . shellescape(a:filename)
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endfunction
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function! s:RunRustfmt(command, curw, tmpname)
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	if exists("*systemlist")
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		let out = systemlist(a:command)
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	else
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		let out = split(system(a:command), '\r\?\n')
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	endif
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	if v:shell_error == 0 || v:shell_error == 3
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		" remove undo point caused via BufWritePre
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		try | silent undojoin | catch | endtry
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		" Replace current file with temp file, then reload buffer
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		call rename(a:tmpname, expand('%'))
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		silent edit!
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		let &syntax = &syntax
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		" only clear location list if it was previously filled to prevent
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		" clobbering other additions
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		if s:got_fmt_error
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			let s:got_fmt_error = 0
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			call setloclist(0, [])
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			lwindow
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		endif
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	elseif g:rustfmt_fail_silently == 0
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		" otherwise get the errors and put them in the location list
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		let errors = []
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		for line in out
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			" src/lib.rs:13:5: 13:10 error: expected `,`, or `}`, found `value`
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			let tokens = matchlist(line, '^\(.\{-}\):\(\d\+\):\(\d\+\):\s*\(\d\+:\d\+\s*\)\?\s*error: \(.*\)')
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			if !empty(tokens)
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				call add(errors, {"filename": @%,
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						 \"lnum":     tokens[2],
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						 \"col":      tokens[3],
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						 \"text":     tokens[5]})
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			endif
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		endfor
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		if empty(errors)
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			% | " Couldn't detect rustfmt error format, output errors
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		endif
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		if !empty(errors)
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			call setloclist(0, errors, 'r')
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			echohl Error | echomsg "rustfmt returned error" | echohl None
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		endif
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		let s:got_fmt_error = 1
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		lwindow
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		" We didn't use the temp file, so clean up
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		call delete(a:tmpname)
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	endif
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	call winrestview(a:curw)
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endfunction
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function! rustfmt#FormatRange(line1, line2)
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	let l:curw = winsaveview()
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	let l:tmpname = expand("%:p:h") . "/." . expand("%:p:t") . ".rustfmt"
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	call writefile(getline(1, '$'), l:tmpname)
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	let command = s:RustfmtCommandRange(l:tmpname, a:line1, a:line2)
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	call s:RunRustfmt(command, l:curw, l:tmpname)
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endfunction
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function! rustfmt#Format()
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	let l:curw = winsaveview()
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	let l:tmpname = expand("%:p:h") . "/." . expand("%:p:t") . ".rustfmt"
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	call writefile(getline(1, '$'), l:tmpname)
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	let command = s:RustfmtCommand(l:tmpname)
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	call s:RunRustfmt(command, l:curw, l:tmpname)
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endfunction
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