Major updatev1.9.2

1 files changed, 225 insertions, 0 deletions

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+" Author: Kevin Ballard
+" Description: Helper functions for Rust commands/mappings
+" Last Modified: May 27, 2014
+
+" 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)
+	if a:bang
+		let idx = index(a:args, '--')
+		if idx != -1
+			let rustc_args = idx == 0 ? [] : a:args[:idx-1]
+			let args = a:args[idx+1:]
+		else
+			let rustc_args = a:args
+			let args = []
+		endif
+	else
+		let rustc_args = []
+		let args = a:args
+	endif
+
+	let b:rust_last_rustc_args = rustc_args
+	let b:rust_last_args = args
+
+	call s:WithPath(function("s:Run"), rustc_args, args)
+endfunction
+
+function! s:Run(path, rustc_args, args)
+	try
+		let exepath = tempname()
+		if has('win32')
+			let exepath .= '.exe'
+		endif
+
+		let rustc_args = [a:path, '-o', exepath] + a:rustc_args
+
+		let rustc = exists("g:rustc_path") ? g:rustc_path : "rustc"
+
+		let output = system(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
+	finally
+		if exists("exepath")
+			silent! call delete(exepath)
+		endif
+	endtry
+endfunction
+
+" Expand {{{1
+
+function! rust#Expand(bang, args)
+	if a:bang && !empty(a:args)
+		let pretty = a:args[0]
+		let args = a:args[1:]
+	else
+		let pretty = "expanded"
+		let args = a:args
+	endif
+	call s:WithPath(function("s:Expand"), pretty, args)
+endfunction
+
+function! s:Expand(path, pretty, args)
+	try
+		let rustc = exists("g:rustc_path") ? g:rustc_path : "rustc"
+
+		let args = [a:path, '--pretty', a:pretty] + a:args
+		let output = system(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
+		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="]
+		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)
+	call s:WithPath(function("s:Emit"), a:type, a:args)
+endfunction
+
+function! s:Emit(path, type, args)
+	try
+		let rustc = exists("g:rustc_path") ? g:rustc_path : "rustc"
+
+		let args = [a:path, '--emit', a:type, '-o', '-'] + a:args
+		let output = system(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
+			if a:type == "ir"
+				setl filetype=llvm
+			elseif a:type == "asm"
+				setl filetype=asm
+			endif
+			setl buftype=nofile
+			setl bufhidden=hide
+			setl noswapfile
+		endif
+	endtry
+endfunction
+
+" Utility functions {{{1
+
+function! s:WithPath(func, ...)
+	try
+		let save_write = &write
+		set write
+		let path = expand('%')
+		let pathisempty = empty(path)
+		if pathisempty || !save_write
+			" use a temporary file named 'unnamed.rs' inside a temporary
+			" directory. This produces better error messages
+			let tmpdir = tempname()
+			call mkdir(tmpdir)
+
+			let save_cwd = getcwd()
+			silent exe 'lcd' tmpdir
+
+			let path = 'unnamed.rs'
+
+			let save_mod = &mod
+			set nomod
+
+			silent exe 'keepalt write! ' . path
+			if pathisempty
+				silent keepalt 0file
+			endif
+		else
+			update
+		endif
+
+		call call(a:func, [path] + a:000)
+	finally
+		if exists("save_mod")   | let &mod = save_mod          | endif
+		if exists("save_write") | let &write = save_write      | endif
+		if exists("save_cwd")   | silent exe 'lcd' save_cwd    | endif
+		if exists("tmpdir")     | silent call s:RmDir(tmpdir)  | endif
+	endtry
+endfunction
+
+function! rust#AppendCmdLine(text)
+	call setcmdpos(getcmdpos())
+	let cmd = getcmdline() . a:text
+	return cmd
+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
+	silent exe "!rm -rf " . shellescape(a:path)
+endfunction
+
+" }}}1
+
+" vim: set noet sw=4 ts=4: