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" Author: Kevin Ballard
" Description: Helper functions for Rust commands/mappings
" Last Modified: May 27, 2014
" For bugs, patches and license go to https://github.com/rust-lang/rust.vim
" Jump {{{1
function! rust#Jump(mode, function) range
let cnt = v:count1
normal! m'
if a:mode ==# 'v'
norm! gv
endif
let foldenable = &foldenable
set nofoldenable
while cnt > 0
execute "call <SID>Jump_" . a:function . "()"
let cnt = cnt - 1
endwhile
let &foldenable = foldenable
endfunction
function! s:Jump_Back()
call search('{', 'b')
keepjumps normal! w99[{
endfunction
function! s:Jump_Forward()
normal! j0
call search('{', 'b')
keepjumps normal! w99[{%
call search('{')
endfunction
" Run {{{1
function! rust#Run(bang, args)
let args = s:ShellTokenize(a:args)
if a:bang
let idx = index(l:args, '--')
if idx != -1
let rustc_args = idx == 0 ? [] : l:args[:idx-1]
let args = l:args[idx+1:]
else
let rustc_args = l:args
let args = []
endif
else
let rustc_args = []
endif
let b:rust_last_rustc_args = l:rustc_args
let b:rust_last_args = l:args
call s:WithPath(function("s:Run"), rustc_args, args)
endfunction
function! s:Run(dict, rustc_args, args)
let exepath = a:dict.tmpdir.'/'.fnamemodify(a:dict.path, ':t:r')
if has('win32')
let exepath .= '.exe'
endif
let relpath = get(a:dict, 'tmpdir_relpath', a:dict.path)
let rustc_args = [relpath, '-o', exepath] + a:rustc_args
let rustc = exists("g:rustc_path") ? g:rustc_path : "rustc"
let pwd = a:dict.istemp ? a:dict.tmpdir : ''
let output = s:system(pwd, shellescape(rustc) . " " . join(map(rustc_args, 'shellescape(v:val)')))
if output != ''
echohl WarningMsg
echo output
echohl None
endif
if !v:shell_error
exe '!' . shellescape(exepath) . " " . join(map(a:args, 'shellescape(v:val)'))
endif
endfunction
" Expand {{{1
function! rust#Expand(bang, args)
let args = s:ShellTokenize(a:args)
if a:bang && !empty(l:args)
let pretty = remove(l:args, 0)
else
let pretty = "expanded"
endif
call s:WithPath(function("s:Expand"), pretty, args)
endfunction
function! s:Expand(dict, pretty, args)
try
let rustc = exists("g:rustc_path") ? g:rustc_path : "rustc"
if a:pretty =~? '^\%(everybody_loops$\|flowgraph=\)'
let flag = '--xpretty'
else
let flag = '--pretty'
endif
let relpath = get(a:dict, 'tmpdir_relpath', a:dict.path)
let args = [relpath, '-Z', 'unstable-options', l:flag, a:pretty] + a:args
let pwd = a:dict.istemp ? a:dict.tmpdir : ''
let output = s:system(pwd, shellescape(rustc) . " " . join(map(args, 'shellescape(v:val)')))
if v:shell_error
echohl WarningMsg
echo output
echohl None
else
new
silent put =output
1
d
setl filetype=rust
setl buftype=nofile
setl bufhidden=hide
setl noswapfile
" give the buffer a nice name
let suffix = 1
let basename = fnamemodify(a:dict.path, ':t:r')
while 1
let bufname = basename
if suffix > 1 | let bufname .= ' ('.suffix.')' | endif
let bufname .= '.pretty.rs'
if bufexists(bufname)
let suffix += 1
continue
endif
exe 'silent noautocmd keepalt file' fnameescape(bufname)
break
endwhile
endif
endtry
endfunction
function! rust#CompleteExpand(lead, line, pos)
if a:line[: a:pos-1] =~ '^RustExpand!\s*\S*$'
" first argument and it has a !
let list = ["normal", "expanded", "typed", "expanded,identified", "flowgraph=", "everybody_loops"]
if !empty(a:lead)
call filter(list, "v:val[:len(a:lead)-1] == a:lead")
endif
return list
endif
return glob(escape(a:lead, "*?[") . '*', 0, 1)
endfunction
" Emit {{{1
function! rust#Emit(type, args)
let args = s:ShellTokenize(a:args)
call s:WithPath(function("s:Emit"), a:type, args)
endfunction
function! s:Emit(dict, type, args)
try
let output_path = a:dict.tmpdir.'/output'
let rustc = exists("g:rustc_path") ? g:rustc_path : "rustc"
let relpath = get(a:dict, 'tmpdir_relpath', a:dict.path)
let args = [relpath, '--emit', a:type, '-o', output_path] + a:args
let pwd = a:dict.istemp ? a:dict.tmpdir : ''
let output = s:system(pwd, shellescape(rustc) . " " . join(map(args, 'shellescape(v:val)')))
if output != ''
echohl WarningMsg
echo output
echohl None
endif
if !v:shell_error
new
exe 'silent keepalt read' fnameescape(output_path)
1
d
if a:type == "llvm-ir"
setl filetype=llvm
let extension = 'll'
elseif a:type == "asm"
setl filetype=asm
let extension = 's'
endif
setl buftype=nofile
setl bufhidden=hide
setl noswapfile
if exists('l:extension')
" give the buffer a nice name
let suffix = 1
let basename = fnamemodify(a:dict.path, ':t:r')
while 1
let bufname = basename
if suffix > 1 | let bufname .= ' ('.suffix.')' | endif
let bufname .= '.'.extension
if bufexists(bufname)
let suffix += 1
continue
endif
exe 'silent noautocmd keepalt file' fnameescape(bufname)
break
endwhile
endif
endif
endtry
endfunction
" Utility functions {{{1
" Invokes func(dict, ...)
" Where {dict} is a dictionary with the following keys:
" 'path' - The path to the file
" 'tmpdir' - The path to a temporary directory that will be deleted when the
" function returns.
" 'istemp' - 1 if the path is a file inside of {dict.tmpdir} or 0 otherwise.
" If {istemp} is 1 then an additional key is provided:
" 'tmpdir_relpath' - The {path} relative to the {tmpdir}.
"
" {dict.path} may be a path to a file inside of {dict.tmpdir} or it may be the
" existing path of the current buffer. If the path is inside of {dict.tmpdir}
" then it is guaranteed to have a '.rs' extension.
function! s:WithPath(func, ...)
let buf = bufnr('')
let saved = {}
let dict = {}
try
let saved.write = &write
set write
let dict.path = expand('%')
let pathisempty = empty(dict.path)
" Always create a tmpdir in case the wrapped command wants it
let dict.tmpdir = tempname()
call mkdir(dict.tmpdir)
if pathisempty || !saved.write
let dict.istemp = 1
" if we're doing this because of nowrite, preserve the filename
if !pathisempty
let filename = expand('%:t:r').".rs"
else
let filename = 'unnamed.rs'
endif
let dict.tmpdir_relpath = filename
let dict.path = dict.tmpdir.'/'.filename
let saved.mod = &mod
set nomod
silent exe 'keepalt write! ' . fnameescape(dict.path)
if pathisempty
silent keepalt 0file
endif
else
let dict.istemp = 0
update
endif
call call(a:func, [dict] + a:000)
finally
if bufexists(buf)
for [opt, value] in items(saved)
silent call setbufvar(buf, '&'.opt, value)
unlet value " avoid variable type mismatches
endfor
endif
if has_key(dict, 'tmpdir') | silent call s:RmDir(dict.tmpdir) | endif
endtry
endfunction
function! rust#AppendCmdLine(text)
call setcmdpos(getcmdpos())
let cmd = getcmdline() . a:text
return cmd
endfunction
" Tokenize the string according to sh parsing rules
function! s:ShellTokenize(text)
" states:
" 0: start of word
" 1: unquoted
" 2: unquoted backslash
" 3: double-quote
" 4: double-quoted backslash
" 5: single-quote
let l:state = 0
let l:current = ''
let l:args = []
for c in split(a:text, '\zs')
if l:state == 0 || l:state == 1 " unquoted
if l:c ==# ' '
if l:state == 0 | continue | endif
call add(l:args, l:current)
let l:current = ''
let l:state = 0
elseif l:c ==# '\'
let l:state = 2
elseif l:c ==# '"'
let l:state = 3
elseif l:c ==# "'"
let l:state = 5
else
let l:current .= l:c
let l:state = 1
endif
elseif l:state == 2 " unquoted backslash
if l:c !=# "\n" " can it even be \n?
let l:current .= l:c
endif
let l:state = 1
elseif l:state == 3 " double-quote
if l:c ==# '\'
let l:state = 4
elseif l:c ==# '"'
let l:state = 1
else
let l:current .= l:c
endif
elseif l:state == 4 " double-quoted backslash
if stridx('$`"\', l:c) >= 0
let l:current .= l:c
elseif l:c ==# "\n" " is this even possible?
" skip it
else
let l:current .= '\'.l:c
endif
let l:state = 3
elseif l:state == 5 " single-quoted
if l:c == "'"
let l:state = 1
else
let l:current .= l:c
endif
endif
endfor
if l:state != 0
call add(l:args, l:current)
endif
return l:args
endfunction
function! s:RmDir(path)
" sanity check; make sure it's not empty, /, or $HOME
if empty(a:path)
echoerr 'Attempted to delete empty path'
return 0
elseif a:path == '/' || a:path == $HOME
echoerr 'Attempted to delete protected path: ' . a:path
return 0
endif
return system("rm -rf " . shellescape(a:path))
endfunction
" Executes {cmd} with the cwd set to {pwd}, without changing Vim's cwd.
" If {pwd} is the empty string then it doesn't change the cwd.
function! s:system(pwd, cmd)
let cmd = a:cmd
if !empty(a:pwd)
let cmd = 'cd ' . shellescape(a:pwd) . ' && ' . cmd
endif
return system(cmd)
endfunction
" Playpen Support {{{1
" Parts of gist.vim by Yasuhiro Matsumoto <mattn.jp@gmail.com> reused
" gist.vim available under the BSD license, available at
" http://github.com/mattn/gist-vim
function! s:has_webapi()
if !exists("*webapi#http#post")
try
call webapi#http#post()
catch
endtry
endif
return exists("*webapi#http#post")
endfunction
function! rust#Play(count, line1, line2, ...) abort
redraw
let l:rust_playpen_url = get(g:, 'rust_playpen_url', 'https://play.rust-lang.org/')
let l:rust_shortener_url = get(g:, 'rust_shortener_url', 'https://is.gd/')
if !s:has_webapi()
echohl ErrorMsg | echomsg ':RustPlay depends on webapi.vim (https://github.com/mattn/webapi-vim)' | echohl None
return
endif
let bufname = bufname('%')
if a:count < 1
let content = join(getline(a:line1, a:line2), "\n")
else
let save_regcont = @"
let save_regtype = getregtype('"')
silent! normal! gvy
let content = @"
call setreg('"', save_regcont, save_regtype)
endif
let body = l:rust_playpen_url."?code=".webapi#http#encodeURI(content)
if strlen(body) > 5000
echohl ErrorMsg | echomsg 'Buffer too large, max 5000 encoded characters ('.strlen(body).')' | echohl None
return
endif
let payload = "format=simple&url=".webapi#http#encodeURI(body)
let res = webapi#http#post(l:rust_shortener_url.'create.php', payload, {})
let url = res.content
redraw | echomsg 'Done: '.url
endfunction
" }}}1
" vim: set noet sw=8 ts=8: