1 files changed, 106 insertions, 0 deletions
diff --git a/vim/bundle/rust.vim/autoload/rustfmt.vim b/vim/bundle/rust.vim/autoload/rustfmt.vim
new file mode 100644
index 0000000..e5f9830
--- /dev/null
+++ b/vim/bundle/rust.vim/autoload/rustfmt.vim
@@ -0,0 +1,106 @@
+" Author: Stephen Sugden <stephen@stephensugden.com>
+"
+" Adapted from https://github.com/fatih/vim-go
+
+if !exists("g:rustfmt_autosave")
+  let g:rustfmt_autosave = 0
+endif
+
+if !exists("g:rustfmt_command")
+    let g:rustfmt_command = "rustfmt"
+endif
+
+if !exists("g:rustfmt_options")
+  let g:rustfmt_options = ""
+endif
+
+if !exists("g:rustfmt_fail_silently")
+  let g:rustfmt_fail_silently = 0
+endif
+
+let s:got_fmt_error = 0
+
+function! s:RustfmtCommandRange(filename, line1, line2)
+  let l:arg = {"file": shellescape(a:filename), "range": [a:line1, a:line2]}
+  return printf("%s %s --write-mode=overwrite --file-lines '[%s]'", g:rustfmt_command, g:rustfmt_options, json_encode(l:arg))
+endfunction
+
+function! s:RustfmtCommand(filename)
+  return g:rustfmt_command . " --write-mode=overwrite " . g:rustfmt_options . " " . shellescape(a:filename)
+endfunction
+
+function! s:RunRustfmt(command, curw, tmpname)
+  if exists("*systemlist")
+    let out = systemlist(a:command)
+  else
+    let out = split(system(a:command), '\r\?\n')
+  endif
+
+  if v:shell_error == 0 || v:shell_error == 3
+    " remove undo point caused via BufWritePre
+    try | silent undojoin | catch | endtry
+
+    " Replace current file with temp file, then reload buffer
+    call rename(a:tmpname, expand('%'))
+    silent edit!
+    let &syntax = &syntax
+
+    " only clear location list if it was previously filled to prevent
+    " clobbering other additions
+    if s:got_fmt_error
+      let s:got_fmt_error = 0
+      call setloclist(0, [])
+      lwindow
+    endif
+  elseif g:rustfmt_fail_silently == 0
+    " otherwise get the errors and put them in the location list
+    let errors = []
+
+    for line in out
+      " src/lib.rs:13:5: 13:10 error: expected `,`, or `}`, found `value`
+      let tokens = matchlist(line, '^\(.\{-}\):\(\d\+\):\(\d\+\):\s*\(\d\+:\d\+\s*\)\?\s*error: \(.*\)')
+      if !empty(tokens)
+        call add(errors, {"filename": @%,
+                         \"lnum":     tokens[2],
+                         \"col":      tokens[3],
+                         \"text":     tokens[5]})
+      endif
+    endfor
+
+    if empty(errors)
+      % | " Couldn't detect rustfmt error format, output errors
+    endif
+
+    if !empty(errors)
+      call setloclist(0, errors, 'r')
+      echohl Error | echomsg "rustfmt returned error" | echohl None
+    endif
+
+    let s:got_fmt_error = 1
+    lwindow
+    " We didn't use the temp file, so clean up
+    call delete(a:tmpname)
+  endif
+
+  call winrestview(a:curw)
+endfunction
+
+function! rustfmt#FormatRange(line1, line2)
+  let l:curw = winsaveview()
+  let l:tmpname = expand("%:p:h") . "/." . expand("%:p:t") . ".rustfmt"
+  call writefile(getline(1, '$'), l:tmpname)
+
+  let command = s:RustfmtCommandRange(l:tmpname, a:line1, a:line2)
+
+  call s:RunRustfmt(command, l:curw, l:tmpname)
+endfunction
+
+function! rustfmt#Format()
+  let l:curw = winsaveview()
+  let l:tmpname = expand("%:p:h") . "/." . expand("%:p:t") . ".rustfmt"
+  call writefile(getline(1, '$'), l:tmpname)
+
+  let command = s:RustfmtCommand(l:tmpname)
+
+  call s:RunRustfmt(command, l:curw, l:tmpname)
+endfunction