Snippets and vim updates and such, oh my

git-svn-id: http://photonzero.com/dotfiles/trunk@33 23f722f6-122a-0410-8cef-c75bd312dd78

.vim/autoload/objc/pum_snippet.vim

@@ -0,0 +1,87 @@
+" File:         pum_snippet.vim
+" Author:       Michael Sanders (msanders42 [at] gmail [dot] com)
+" Last Updated: June 12, 2009
+" Description:  Uses snipMate to jump through function or method objc
+"               parameters when autocompleting. Used in cocoacomplete.vim.
+
+" This function is invoked whenever pum_snippet is to be used; the keys are
+" only mapped when used as the trigger, and then immediately unmapped to avoid
+" breaking abbreviations, as well as other things.
+fun! objc#pum_snippet#Map()
+	ino <silent> <buffer> <space> <c-r>=objc#pum_snippet#Trigger(' ')<cr>
+	if !exists('g:SuperTabMappingForward') " Only map tab if not using supertab.
+	\ || (g:SuperTabMappingForward != '<tab>' && g:SuperTabMappingForward != '<tab>')
+		ino <silent> <buffer> <tab> <c-r>=objc#pum_snippet#Trigger("\t")<cr>
+	endif
+	ino <silent> <buffer> <return> <c-r>=objc#pum_snippet#Trigger("\n")<cr>
+	let s:start = col('.')
+	" Completion menu can only be detected when the popup menu is visible, so
+	" 'menuone' needs to be temporarily set:
+	let s:cot = &cot
+	set cot+=menuone
+endf
+
+fun! objc#pum_snippet#Unmap()
+	call s:UnmapKey('<space>')
+	call s:UnmapKey('<tab>')
+	call s:UnmapKey('<return>')
+endf
+
+fun s:UnmapKey(key)
+	if maparg(a:key, 'i') =~? '^<C-R>=objc#pum_snippet#Trigger('
+		sil exe 'iunmap <buffer> '.a:key
+	endif
+endf
+
+fun! objc#pum_snippet#Trigger(key)
+	call objc#pum_snippet#Unmap()
+	if pumvisible()
+		let line = getline('.')
+		let col = col('.')
+		let word = matchstr(line, '\%'.s:start.'c\k\+(.\{-})\%'.col.'c')
+		if word != ''
+			let ConvertWord = function('s:ConvertFunction')
+		elseif match(line, '\%'.s:start.'c\k\+[^()]*:[^()]*\%'.col.'c') != -1
+			let word = matchstr(line, '\%'.s:start.'c\k\+[^()]*\%'.col.'c')
+			let ConvertWord = function('s:ConvertMethod')
+		endif
+		if word != ''
+			call s:ResetOptions()
+			let col -= len(word)
+			sil exe 's/\V'.escape(word, '\/').'\%#//'
+			return snipMate#expandSnip(ConvertWord(word), col)
+		endif
+	endif
+	call s:ResetOptions()
+	return a:key
+endf
+
+fun s:ResetOptions()
+	let &cot = s:cot
+	unl s:start s:cot
+endf
+
+fun s:ConvertFunction(function)
+	let name = matchstr(a:function, '^\k\+')
+	let params = matchstr(a:function, '^\k\+(\zs.*')
+	let snippet = name.'('.substitute(params, '\v(.{-1})(, |\))', '${0:\1}\2', 'g').'${0}'
+	return s:OrderSnippet(snippet)
+endf
+
+fun s:ConvertMethod(method)
+	if stridx(a:method, ':') == -1 | return a:method | endif
+	let snippet = substitute(a:method, '\v\k+:\zs.{-}\ze(\s*\k+:|$)', '${0:&}', 'g')
+	return s:OrderSnippet(snippet)
+endf
+
+" Converts "${0} foo ${0} bar ..." to "${1} foo ${2} bar", etc.
+fun s:OrderSnippet(snippet)
+	let snippet = a:snippet
+	let i = 1
+	while stridx(snippet, '${0') != -1
+		let snippet = substitute(snippet, '${0', '${'.i, '')
+		let i += 1
+	endw
+	return snippet
+endf
+" vim:noet:sw=4:ts=4:ft=vim