diff --git a/plugin/refactor.vim b/plugin/refactor.vim
index 0a51bd1..a0d9454 100644
--- a/plugin/refactor.vim
+++ b/plugin/refactor.vim
@@ -1,476 +1,476 @@
-""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
-" Refactor for vim
-""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
-" INTRODUCTION:
-"
-" This plugin contains some basic refactoring commands for C/C++(Java, C#).
-" For the complexity of C++, instead of really parse the source code, I used 
-" regular expression matches. But it works well as I tested.
-"
-" The refactor commands and their default key map currently are:
-" 	1. <A-r>e 	Extract method
-" 	2. <A-r>p 	local variable to Parameter
-" 	3. <A-r>r 	Rename LOCAL variable
-" 	4. <A-r>d 	Delete parameter
-" 	5. <A-r>o 	reOrder parameters
-" 	6. <A-r>c 	introduce Constant
-"
-" BiDongliang 	bidongliang_2000@126.com 2007/12/4
-"
-""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
-" LIMITATION:
-" 	1. Parameter with default value is not supported
-" 	2. Nested template type are limit to 3 layers, and multiple template
-" 	template parameter is not supported. But you can enable them by modify 
-" 	the variable s:TemplateParameterPattern. 
-" 		list<int> 						supported
-" 		list<list<int> > 				supported
-" 		list<list<list<int> > > 		supported
-" 		list<pair<int, int> > 			supported
-" 		list<list<int>, list<int> > 	unsuported
-" 	3. Rename refactor can only perform on local variables.
-" 	4. Register z is used when extract method.
-" 	5. 10 parameter supported at most.
-"
-""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
-" BUGS:
-" 	1. (Fixed) Can not handle 'int a = 0' like statment in local variable to
-" 	parameter, because s:IdentifierPattern can not start with digit.
-" 	2. (Fixed) Add word boundary to some patterns. (\<\>)
-" 	3. (Fixed) <cWORD> will expand to whole expression in introducing constant.
-" 	Thus, abc3def[>4<] will parse to 3. Fixed by iteration.
-" 	4. (Fixed) Parse error of variable defination with initialization.
-"
-""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
-
-" These are the default key mappings
-map <A-r>e :call ExtractMethod()<ENTER>
-map <A-r>p :call LocalVariableToParameter()<ENTER>
-map <A-r>r :call RenameVariable()<ENTER>
-map <A-r>d :call RemoveParameter()<ENTER>
-map <A-r>o :call ReorderParameters()<ENTER>
-map <A-r>c :call IntroduceConstant()<ENTER>
-
-" Used to prevent the keywords be parsed as variable name
-let s:Keywords = ["auto", "const", "double", "float", "int", "short", "struct", "unsigned", "break", "continue", "else", "for", "long", "signed", "switch", "void", "case", "default", "enum", "goto", "register", "sizeof", "typedef", "volatile", "char", "do", "extern", "if", "return", "static", "union", "while", "asm", "dynamic_cast", "namespace", "reinterpret_cast", "try", "bool", "explicit", "new", "static_cast", "typeid", "catch", "false", "operator", "template", "typename", "class", "friend", "private", "this", "using", "const_cast", "inline", "public", "throw", "virtual", "delete", "mutable", "protected", "true", "wchar_t", "size_t"]
-
-" Patterns used to match language element
-let s:IdentifierPattern 			= '\<\h\w*\>'
-let s:TypePostfixPattern 			= '\s*[*&]*\s*'
-let s:TypeElementPattern 			= s:IdentifierPattern . s:TypePostfixPattern
-let s:TemplateParameterPattern 		= '\%(<[^<>]*>\|<[^<>]*<[^<>]*>[^<>]\+>\|<[^<>]*<[^<>]*<[^<>]*>[^<>]*>[^<>]\+>\)'     "'<\s*' . s:TypeElementPattern . '\%(\s*,\s*' . s:TypeElementPattern . '\)*>'
-let s:TypeIdentifierPattern 		= '\%(' . s:TypeElementPattern . '\%(' . s:TemplateParameterPattern . s:TypePostfixPattern . '\)*' . s:TypePostfixPattern . '\)\+'
-let s:MissableSeperatorPattern 		= '\%(\s*\n*\s*\)' "'\s*\n*\s*'
-let s:SeperatorPattern 				= '\%(\s\+\n*\s*\|\n\+\|\s*\n*\s\+\)'
-let s:VariableDeclarationPattern 	= s:TypeIdentifierPattern . s:MissableSeperatorPattern . s:IdentifierPattern . '\%\(\[\d*\]\)*'
-let s:FunctionPerfixPattern 		= '^\s*\%(' . s:TypeIdentifierPattern . s:SeperatorPattern. '\|' . s:IdentifierPattern . '::\)\+' 
-let s:ParameterListPattern 			= '(' .  s:MissableSeperatorPattern . '\%(' . s:VariableDeclarationPattern . '\%(\s*,' . s:MissableSeperatorPattern . s:VariableDeclarationPattern . '\)*\)*\s*)'
-let s:FunctionPattern 				= s:FunctionPerfixPattern . s:MissableSeperatorPattern . s:IdentifierPattern . s:MissableSeperatorPattern . s:ParameterListPattern . '[^(){;]*'
-let s:FunctionDeclarationPattern 	= s:FunctionPattern . s:MissableSeperatorPattern . '\%(;\)\@='
-let s:FunctionDefinationPattern 	= s:FunctionPattern . s:MissableSeperatorPattern . '\%({\)\@='
-
-function! IntroduceConstant()
-	let NumberPattern = '\%(\d\+\.\?\d*\|\d*\.\d\+\)\%(f\|F\|L\|l\|U\|u\|ul\|UL\|uL\|Ul\)\?' "'\d\+\%(L\|l\|U\|u\|ul\|UL\|uL\|Ul\)\?\|\d\+\.\d\+[Ff]\?\|\.\d\+[Ff]\?'
-	let text = getline('.')
-	let position = col('.') - 1
-	while strpart(text, position) =~ '^' . NumberPattern && position > 0
-		let position = position - 1
-	endwhile
-	let matched = matchstr(strpart(text, position), NumberPattern)
-	if matched == ""
-		call confirm('Can not parse a constant under cursor!')
-		return
-	endif
-	let constantName = inputdialog('Input the name for ' . matched . ' :')
-	if constantName != ""
-		let type = ""
-		if match(matched, 'ul\|UL\|uL\|Ul') >= 0
-			let type = 'unsigned long'
-		elseif match(matched, '[Uu]') >= 0
-			let type = 'unsigned int'
-		elseif match(matched, '[Ll]') >= 0
-			let type = 'long'
-		elseif match(matched, '[fF]') >= 0
-			let type = 'float'
-		elseif match(matched, '\.') >= 0
-			let type = 'double'
-		else
-			let type = 'int'
-		endif
-		call GotoBeginingBracketOfCurrentFunction()
-		call search(matched, 'W')
-		exec 'normal! [{'
-		exec "normal! oconst " . type . " " . constantName . ' = ' . matched . ";\e"
-		let startLine = line('.') + 1
-		let replace = confirm('Replate all ' . matched .' in this function with "' . constantName . '"?', "&Yes\n&No")
-		if replace == 1
-			call GotoBeginingBracketOfCurrentFunction()
-			normal! %
-			let stopLine = line('.')
-			exec 'normal! :' . startLine . ',' . stopLine . 's/\<' . matched . '\>\%(\.\)\@!/' . constantName . "/g\r"
-		endif
-	endif
-endfunction
-
-function! ReorderParameters()
-	let originLine = line('.')
-	let originCol = col('.')
-	let parameterList = GetParameterListOfCurrentFunction()
-	if len(parameterList) == 1 
-		if parameterList[0] == 'NONE'
-			call confirm('There is no parameter to reorder!')
-		else
-			call confirm('Can not reorder the only parameter!')
-		endif
-		return 
-	endif
-	if len(parameterList) > 0
-		if len(parameterList) > 10
-			call confirm('Parameter count should less than 10!')
-			return
-		endif
-		let text = "Parameters of current function are:"
-		let start = 0
-		while start < len(parameterList)
-			let text = text . "\n" . start . ':  ' . parameterList[start]
-			let start = start + 1
-		endwhile
-		let text = text . "\nInput the index of parameteres in new order:"
-		let processed = 0
-		while processed == 0
-			let order = inputdialog(text)
-			if order != ""			
-				if order =~ '\D'
-					call confirm('Just input the indexes without seperator, please!')
-					continue
-				endif
-				let processed = 1
-				let index = 0
-				while index < len(parameterList)
-					if stridx(order, index) < 0
-						call confirm('You missed parameter ' . index)
-						let processed = 0
-						break
-					endif
-					let index = index + 1
-				endwhile
-				if processed == 1
-					call cursor(originLine, originCol)
-					call GotoBeginingBracketOfCurrentFunction()
-					exec "normal! ?(\r"
-					exec "normal! d/)\ri(\e"
-					let index = 0
-					while index < strlen(order)
-						let current = strpart(order, index, 1)
-						exec "normal! a" . parameterList[current] . "\e"
-						if index < strlen(order) - 1
-							exec "normal! a, \e"
-							let currentCol = col('.')
-							if currentCol > 80
-								exec "normal! a\r\e"
-							endif
-						endif
-						let index = index + 1
-					endwhile
-				endif
-			else
-				let processed = 1
-			endif
-		endwhile
-	endif
-endfunction
-
-function! RemoveParameter()
-	let parameterList = GetParameterListOfCurrentFunction()
-	if len(parameterList) == 1 && parameterList[0] == 'NONE'
-		call confirm('There is no parameter to remove!')
-		return 
-	endif
-
-	if len(parameterList) > 0
-		let text = "Parameters of current function are:"
-		let start = 0
-		while start < len(parameterList)
-			let text = text . "\n" . start . ':  ' . parameterList[start]
-			let start = start + 1
-		endwhile
-		let text = text . "\nInput the index of parameter to remove:"
-		let index = inputdialog(text)
-		if index != "" && index >= 0 && index < len(parameterList)
-			call search(s:FunctionPattern, 'bW')
-			let parameter = escape(parameterList[index], '*')
-			if search(parameter, 'W') > 0
-				let text = getline('.')
-				if match(text, parameter . '\s*,') >= 0
-					normal! df,
-				else
-					let startCol = match(text, ',\s*' . parameter)
-					let matched = matchstr(text, '\(,\s*\)*' . parameter)
-					if startCol >= 0
-						let text = strpart(text, 0, startCol) . strpart(text, startCol + strlen(matched))
-						call setline('.', text)
-					endif				
-				endif
-			endif
-		endif
-	else
-		call confirm("Sorry, I can not parse the function parameter list!")
-	endif
-endfunction
-
-function! RenameVariable()
-	let originRow = line('.')
-	let originCol = col('.')
-	let variableName = expand('<cword>')
-	let variableType = GetCurrentVariableType(0)
-	if variableType == ""
-		call confirm("Can not rename because ". variableName . " is not a local variable!")
-		return
-	endif
-	let newName = inputdialog("Input new name for ". variableName . ":")
-	if newName != ""
-		call GotoBeginingBracketOfCurrentFunction()
-		let startLine = line('.')
-		exec "normal! %"
-		let stopLine = line('.')
-		exec startLine . ',' . stopLine . ':s/\<' . variableName . '\>/'. newName .'/g'	
-	endif
-	call cursor(originRow, originCol)
-endfunction
-
-function! LocalVariableToParameter()
-	let variableName = expand('<cword>')
-	let variableType = GetCurrentVariableType(0)
-	call GotoBeginingBracketOfCurrentFunction()
-	exec "normal! ?(\r"
-	if match(getline('.'), '(\s*)') >= 0
-		call search(')')
-		exec "normal! i" . variableType . ' ' . variableName . "\e"
-	else
-		call search(')')
-		exec "normal! i, " . variableType . ' ' . variableName . "\e"
-	endif
-	call search('{')
-	call search('\<' . variableName . '\>')
-	let currentLine = getline('.')
-	if match(currentLine, variableType . '\s*\<' . variableName . '\>\s*;') >= 0
-		call search(variableType, 'bW')
-		exec "normal! df;"
-		if match(getline('.'), '^\s*$') >= 0
-			exec "normal! dd"
-		endif
-	else
-		if match(currentLine, '\<' . variableName . '\>\s*=') >= 0
-			let variableDefination = matchstr(currentLine, '\<' . variableName . '\>\s*=\s*.\{-\}\([,;]\)\@=')
-			let remainStart = match(currentLine, '\<' . variableName . '\>\s*=\s*\((.*)\)*') + strlen(variableDefination)
-			let remain = strpart(currentLine, remainStart)
-			if match(remain, s:IdentifierPattern) >= 0
-				call setline('.', variableType . strpart(remain, stridx(remain, ',') + 1))
-				exec "normal! O" . variableDefination . ';'
-				exec "normal! 2=="
-			else
-				call setline('.', variableDefination . ';')
-				exec "normal! =="
-			endif
-		else
-			if match(currentLine, '\<' . variableName . '\>\s*,') <0
-				call confirm("I can not erase the variable defination, \nplease do it yourself!")
-			else
-				exec "normal! cf,"
-				exec "normal! =="
-			endif
-		endif
-	endif
-endfunction
-
-function! ExtractMethod() range
-	let scopeIdentifier = GetScopeIdentifierOfCurrentMethod()
-	let variableList = []
-	let varableLocalScopeType = []
-	let variableParentScopeType = []
-	while 1
-		let variableName = MoveToNextVariable(a:lastline)
-		if variableName == ""
-			break
-		endif
-		if index(variableList, variableName) < 0
-			call add(variableList, variableName)
-			let type = GetCurrentVariableType(0)
-			call add(variableParentScopeType, type)
-			let type = GetCurrentVariableType(a:firstline)
-			call add(varableLocalScopeType, type)
-		endif
-	endwhile
-	let methodName = inputdialog("Input the function name:")
-	if methodName != ""
-		" use register z to yank the texts
-		exec "normal! " . a:firstline ."G0\"zy" . a:lastline . "G"
-		if scopeIdentifier == ""
-			call GotoBeginingBracketOfCurrentFunction()
-			exec "normal! %"
-			exec "normal! 2o\ei//\e78a-\eo\eccvoid ". methodName . "(\e"
-		else
-			call GotoBeginingBracketOfCurrentFunction()
-			exec "normal! %"
-			exec "normal! 2o\ei//\e78a-\eo\eccvoid ". scopeIdentifier . "::" . methodName . "(\e"
-		endif		
-		let idx = 0
-		let parameterCount = 0
-		while idx < len(variableList)
-			if varableLocalScopeType[idx] == "" && variableParentScopeType[idx] != ""
-				if parameterCount > 0
-					exec "normal! a, \e"
-				endif
-				if col('.') > 80 && idx < len(variableList) - 1
-					exec "normal! ==A\r\e"
-				endif
-				if variableParentScopeType[idx] =~ '\[\d*\]'
-					let postfix = matchstr(variableParentScopeType[idx], '\[\d*\]')
-					let type = strpart(variableParentScopeType[idx], 0, match(variableParentScopeType[idx], '\[\d*\]'))
-					exec "normal! a" . type . " " . variableList[idx] . postfix . "\e"
-				else
-					exec "normal! a" . variableParentScopeType[idx] . " " . variableList[idx] . "\e"
-				endif
-				let parameterCount = parameterCount + 1
-			endif
-			let idx = idx + 1
-		endwhile
-		exec "normal! a)\e==A\r{\r}\ek\"zp=']"
-
-		if confirm("Replace selection with function call?", "&Yes\n&No", 1) == 1
-			exec "normal! " . a:firstline ."G0c" . a:lastline . "G"
-			exec "normal! a" . methodName . "("
-			let idx = 0
-			let parameterCount = 0
-			while idx < len(variableList)
-				if varableLocalScopeType[idx] == "" && variableParentScopeType[idx] != ""
-					if parameterCount > 0
-						exec "normal! a, \e"
-					endif
-					exec "normal! a" . variableList[idx] . "\e"
-					let parameterCount = parameterCount + 1
-				endif
-				let idx = idx + 1
-			endwhile
-			exec "normal! a);\e==" 
-		endif
-	endif
-endfunction
-
-function! MoveToNextVariable(endLine) 
-	let identifier = ""
-	while search('\([)]\s*\)\@<!' . s:IdentifierPattern . '\(\s*\([(]\|::\|\(\s*' . s:IdentifierPattern . '\)\)\)\@!', 'W', a:endLine) > 0
-		let identifier = expand('<cword>')
-		if index(s:Keywords, expand('<cword>')) >= 0
-			let identifier = ""
-			continue
-		endif
-		break
-	endwhile
-	return identifier
-endfunction
-
-" search variable defination in current function scope
-function! GetCurrentVariableType(topestLine)
-	let variableType = ""
-	let startRow = line('.')
-	let startCol = col('.')
-	let variableName = expand("<cword>")
-	normal! e
-	call GotoBeginingBracketOfCurrentFunction()
-	exec "normal! ?(\r"
-	let stopRow = line('.')
-	if a:topestLine > stopRow 
-		let stopRow = a:topestLine
-	endif
-	call cursor(startRow, 1000)
-	
-
-	let DeclarationPattern = s:TypeIdentifierPattern . '\s*\%(' . s:IdentifierPattern . '[^()]*,\s*\)*\<' . variableName . '\>\%(\[\d*\]\)*'
-	while search(DeclarationPattern, "bW", stopRow) > 0
-		if expand('<cword>') =~ 'return'
-			continue
-		endif
-		let currentLine = getline('.')
-		let commentStart = match(currentLine, '//')
-		if commentStart >= 0 && commentStart < match(currentLine, DeclarationPattern)
-			continue
-		endif
-		let matched = matchstr(currentLine,  DeclarationPattern)
-		let typeend = match(matched, '\(\s*' . s:IdentifierPattern . '\s*[=,][^<>]*\)*\<'. variableName . '\>')
-		let variableType = strpart(matched, 0, typeend)
-		if matched =~ '\[\d*\]'
-			let postfix = matchstr(matched, '\[\d*\]')
-			let variableType = variableType . postfix
-		endif
-		break
-	endwhile
-	call cursor(startRow, startCol)
-	return variableType
-endfunction
-
-function! GetScopeIdentifierOfCurrentMethod()
-	let scopeIdentifier = ""
-	let originRow = line('.')
-	let originCol = col('.')
-	call GotoBeginingBracketOfCurrentFunction()
-	exec "normal! ?(\r"
-	if search(s:IdentifierPattern . '::', 'bW', line('.') - 2) > 0
-		let scopeIdentifier = expand('<cword>')
-	endif
-	call cursor(originRow, originCol)
-	return scopeIdentifier
-endfunction
-
-function! GotoBeginingBracketOfCurrentFunction()
-	if search(s:FunctionPattern, 'bW') > 0
-		if search('{', 'W') <= 0
-			exec 'normal! [[' 
-		endif
-	endif
-endfunction
-
-function! GetParameterListOfCurrentFunction()
-	let parameterList = []
-	if search(s:FunctionPattern, 'bW') > 0
-		call search('(')
-		let startLine = line('.')
-		let startCol = col('.')
-		normal! %
-		let stopLine = line('.')
-		let stopCol = col('.')
-
-		let closeBraceIndex = 0
-		let lineIter = startLine
-		let text = ""
-		while lineIter < stopLine
-			let text = text . getline(lineIter)
-			let closeBraceIndex = closeBraceIndex + strlen(getline(lineIter))
-			let lineIter = lineIter + 1
-		endwhile
-		let text = text . getline(stopLine)
-		let closeBraceIndex = closeBraceIndex + stopCol
-
-		let emptyPair = match(text, '(\s*)')
-		if emptyPair >= 0 && emptyPair <= startCol + 2
-			call add(parameterList, 'NONE')
-			return parameterList
-		endif		
-		
-		let start = startCol - 1
-		while 1
-			let parameter = matchstr(text, s:VariableDeclarationPattern, start)
-			let start = match(text, s:VariableDeclarationPattern, start)
-			let start = start + strlen(parameter)
-			if start >= closeBraceIndex || start < 0
-				break
-			endif
-			if parameter != ""
-				call add(parameterList, parameter)
-			else
-				break
-			endif
-		endwhile
-	endif
-	return parameterList
-endfunction
+""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
+" Refactor for vim
+""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
+" INTRODUCTION:
+"
+" This plugin contains some basic refactoring commands for C/C++(Java, C#).
+" For the complexity of C++, instead of really parse the source code, I used 
+" regular expression matches. But it works well as I tested.
+"
+" The refactor commands and their default key map currently are:
+" 	1. <A-r>e 	Extract method
+" 	2. <A-r>p 	local variable to Parameter
+" 	3. <A-r>r 	Rename LOCAL variable
+" 	4. <A-r>d 	Delete parameter
+" 	5. <A-r>o 	reOrder parameters
+" 	6. <A-r>c 	introduce Constant
+"
+" BiDongliang 	bidongliang_2000@126.com 2007/12/4
+"
+""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
+" LIMITATION:
+" 	1. Parameter with default value is not supported
+" 	2. Nested template type are limit to 3 layers, and multiple template
+" 	template parameter is not supported. But you can enable them by modify 
+" 	the variable s:TemplateParameterPattern. 
+" 		list<int> 						supported
+" 		list<list<int> > 				supported
+" 		list<list<list<int> > > 		supported
+" 		list<pair<int, int> > 			supported
+" 		list<list<int>, list<int> > 	unsuported
+" 	3. Rename refactor can only perform on local variables.
+" 	4. Register z is used when extract method.
+" 	5. 10 parameter supported at most.
+"
+""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
+" BUGS:
+" 	1. (Fixed) Can not handle 'int a = 0' like statment in local variable to
+" 	parameter, because s:IdentifierPattern can not start with digit.
+" 	2. (Fixed) Add word boundary to some patterns. (\<\>)
+" 	3. (Fixed) <cWORD> will expand to whole expression in introducing constant.
+" 	Thus, abc3def[>4<] will parse to 3. Fixed by iteration.
+" 	4. (Fixed) Parse error of variable defination with initialization.
+"
+""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
+
+" These are the default key mappings
+map <A-r>e :call ExtractMethod()<ENTER>
+map <A-r>p :call LocalVariableToParameter()<ENTER>
+map <A-r>r :call RenameVariable()<ENTER>
+map <A-r>d :call RemoveParameter()<ENTER>
+map <A-r>o :call ReorderParameters()<ENTER>
+map <A-r>c :call IntroduceConstant()<ENTER>
+
+" Used to prevent the keywords be parsed as variable name
+let s:Keywords = ["auto", "const", "double", "float", "int", "short", "struct", "unsigned", "break", "continue", "else", "for", "long", "signed", "switch", "void", "case", "default", "enum", "goto", "register", "sizeof", "typedef", "volatile", "char", "do", "extern", "if", "return", "static", "union", "while", "asm", "dynamic_cast", "namespace", "reinterpret_cast", "try", "bool", "explicit", "new", "static_cast", "typeid", "catch", "false", "operator", "template", "typename", "class", "friend", "private", "this", "using", "const_cast", "inline", "public", "throw", "virtual", "delete", "mutable", "protected", "true", "wchar_t", "size_t"]
+
+" Patterns used to match language element
+let s:IdentifierPattern 			= '\<\h\w*\>'
+let s:TypePostfixPattern 			= '\s*[*&]*\s*'
+let s:TypeElementPattern 			= s:IdentifierPattern . s:TypePostfixPattern
+let s:TemplateParameterPattern 		= '\%(<[^<>]*>\|<[^<>]*<[^<>]*>[^<>]\+>\|<[^<>]*<[^<>]*<[^<>]*>[^<>]*>[^<>]\+>\)'     "'<\s*' . s:TypeElementPattern . '\%(\s*,\s*' . s:TypeElementPattern . '\)*>'
+let s:TypeIdentifierPattern 		= '\%(' . s:TypeElementPattern . '\%(' . s:TemplateParameterPattern . s:TypePostfixPattern . '\)*' . s:TypePostfixPattern . '\)\+'
+let s:MissableSeperatorPattern 		= '\%(\s*\n*\s*\)' "'\s*\n*\s*'
+let s:SeperatorPattern 				= '\%(\s\+\n*\s*\|\n\+\|\s*\n*\s\+\)'
+let s:VariableDeclarationPattern 	= s:TypeIdentifierPattern . s:MissableSeperatorPattern . s:IdentifierPattern . '\%\(\[\d*\]\)*'
+let s:FunctionPerfixPattern 		= '^\s*\%(' . s:TypeIdentifierPattern . s:SeperatorPattern. '\|' . s:IdentifierPattern . '::\)\+' 
+let s:ParameterListPattern 			= '(' .  s:MissableSeperatorPattern . '\%(' . s:VariableDeclarationPattern . '\%(\s*,' . s:MissableSeperatorPattern . s:VariableDeclarationPattern . '\)*\)*\s*)'
+let s:FunctionPattern 				= s:FunctionPerfixPattern . s:MissableSeperatorPattern . s:IdentifierPattern . s:MissableSeperatorPattern . s:ParameterListPattern . '[^(){;]*'
+let s:FunctionDeclarationPattern 	= s:FunctionPattern . s:MissableSeperatorPattern . '\%(;\)\@='
+let s:FunctionDefinationPattern 	= s:FunctionPattern . s:MissableSeperatorPattern . '\%({\)\@='
+
+function! IntroduceConstant()
+	let NumberPattern = '\%(\d\+\.\?\d*\|\d*\.\d\+\)\%(f\|F\|L\|l\|U\|u\|ul\|UL\|uL\|Ul\)\?' "'\d\+\%(L\|l\|U\|u\|ul\|UL\|uL\|Ul\)\?\|\d\+\.\d\+[Ff]\?\|\.\d\+[Ff]\?'
+	let text = getline('.')
+	let position = col('.') - 1
+	while strpart(text, position) =~ '^' . NumberPattern && position > 0
+		let position = position - 1
+	endwhile
+	let matched = matchstr(strpart(text, position), NumberPattern)
+	if matched == ""
+		call confirm('Can not parse a constant under cursor!')
+		return
+	endif
+	let constantName = inputdialog('Input the name for ' . matched . ' :')
+	if constantName != ""
+		let type = ""
+		if match(matched, 'ul\|UL\|uL\|Ul') >= 0
+			let type = 'unsigned long'
+		elseif match(matched, '[Uu]') >= 0
+			let type = 'unsigned int'
+		elseif match(matched, '[Ll]') >= 0
+			let type = 'long'
+		elseif match(matched, '[fF]') >= 0
+			let type = 'float'
+		elseif match(matched, '\.') >= 0
+			let type = 'double'
+		else
+			let type = 'int'
+		endif
+		call GotoBeginingBracketOfCurrentFunction()
+		call search(matched, 'W')
+		exec 'normal! [{'
+		exec "normal! oconst " . type . " " . constantName . ' = ' . matched . ";\e"
+		let startLine = line('.') + 1
+		let replace = confirm('Replate all ' . matched .' in this function with "' . constantName . '"?', "&Yes\n&No")
+		if replace == 1
+			call GotoBeginingBracketOfCurrentFunction()
+			normal! %
+			let stopLine = line('.')
+			exec 'normal! :' . startLine . ',' . stopLine . 's/\<' . matched . '\>\%(\.\)\@!/' . constantName . "/g\r"
+		endif
+	endif
+endfunction
+
+function! ReorderParameters()
+	let originLine = line('.')
+	let originCol = col('.')
+	let parameterList = GetParameterListOfCurrentFunction()
+	if len(parameterList) == 1 
+		if parameterList[0] == 'NONE'
+			call confirm('There is no parameter to reorder!')
+		else
+			call confirm('Can not reorder the only parameter!')
+		endif
+		return 
+	endif
+	if len(parameterList) > 0
+		if len(parameterList) > 10
+			call confirm('Parameter count should less than 10!')
+			return
+		endif
+		let text = "Parameters of current function are:"
+		let start = 0
+		while start < len(parameterList)
+			let text = text . "\n" . start . ':  ' . parameterList[start]
+			let start = start + 1
+		endwhile
+		let text = text . "\nInput the index of parameteres in new order:"
+		let processed = 0
+		while processed == 0
+			let order = inputdialog(text)
+			if order != ""			
+				if order =~ '\D'
+					call confirm('Just input the indexes without seperator, please!')
+					continue
+				endif
+				let processed = 1
+				let index = 0
+				while index < len(parameterList)
+					if stridx(order, index) < 0
+						call confirm('You missed parameter ' . index)
+						let processed = 0
+						break
+					endif
+					let index = index + 1
+				endwhile
+				if processed == 1
+					call cursor(originLine, originCol)
+					call GotoBeginingBracketOfCurrentFunction()
+					exec "normal! ?(\r"
+					exec "normal! d/)\ri(\e"
+					let index = 0
+					while index < strlen(order)
+						let current = strpart(order, index, 1)
+						exec "normal! a" . parameterList[current] . "\e"
+						if index < strlen(order) - 1
+							exec "normal! a, \e"
+							let currentCol = col('.')
+							if currentCol > 80
+								exec "normal! a\r\e"
+							endif
+						endif
+						let index = index + 1
+					endwhile
+				endif
+			else
+				let processed = 1
+			endif
+		endwhile
+	endif
+endfunction
+
+function! RemoveParameter()
+	let parameterList = GetParameterListOfCurrentFunction()
+	if len(parameterList) == 1 && parameterList[0] == 'NONE'
+		call confirm('There is no parameter to remove!')
+		return 
+	endif
+
+	if len(parameterList) > 0
+		let text = "Parameters of current function are:"
+		let start = 0
+		while start < len(parameterList)
+			let text = text . "\n" . start . ':  ' . parameterList[start]
+			let start = start + 1
+		endwhile
+		let text = text . "\nInput the index of parameter to remove:"
+		let index = inputdialog(text)
+		if index != "" && index >= 0 && index < len(parameterList)
+			call search(s:FunctionPattern, 'bW')
+			let parameter = escape(parameterList[index], '*')
+			if search(parameter, 'W') > 0
+				let text = getline('.')
+				if match(text, parameter . '\s*,') >= 0
+					normal! df,
+				else
+					let startCol = match(text, ',\s*' . parameter)
+					let matched = matchstr(text, '\(,\s*\)*' . parameter)
+					if startCol >= 0
+						let text = strpart(text, 0, startCol) . strpart(text, startCol + strlen(matched))
+						call setline('.', text)
+					endif				
+				endif
+			endif
+		endif
+	else
+		call confirm("Sorry, I can not parse the function parameter list!")
+	endif
+endfunction
+
+function! RenameVariable()
+	let originRow = line('.')
+	let originCol = col('.')
+	let variableName = expand('<cword>')
+	let variableType = GetCurrentVariableType(0)
+	if variableType == ""
+		call confirm("Can not rename because ". variableName . " is not a local variable!")
+		return
+	endif
+	let newName = inputdialog("Input new name for ". variableName . ":")
+	if newName != ""
+		call GotoBeginingBracketOfCurrentFunction()
+		let startLine = line('.')
+		exec "normal! %"
+		let stopLine = line('.')
+		exec startLine . ',' . stopLine . ':s/\<' . variableName . '\>/'. newName .'/g'	
+	endif
+	call cursor(originRow, originCol)
+endfunction
+
+function! LocalVariableToParameter()
+	let variableName = expand('<cword>')
+	let variableType = GetCurrentVariableType(0)
+	call GotoBeginingBracketOfCurrentFunction()
+	exec "normal! ?(\r"
+	if match(getline('.'), '(\s*)') >= 0
+		call search(')')
+		exec "normal! i" . variableType . ' ' . variableName . "\e"
+	else
+		call search(')')
+		exec "normal! i, " . variableType . ' ' . variableName . "\e"
+	endif
+	call search('{')
+	call search('\<' . variableName . '\>')
+	let currentLine = getline('.')
+	if match(currentLine, variableType . '\s*\<' . variableName . '\>\s*;') >= 0
+		call search(variableType, 'bW')
+		exec "normal! df;"
+		if match(getline('.'), '^\s*$') >= 0
+			exec "normal! dd"
+		endif
+	else
+		if match(currentLine, '\<' . variableName . '\>\s*=') >= 0
+			let variableDefination = matchstr(currentLine, '\<' . variableName . '\>\s*=\s*.\{-\}\([,;]\)\@=')
+			let remainStart = match(currentLine, '\<' . variableName . '\>\s*=\s*\((.*)\)*') + strlen(variableDefination)
+			let remain = strpart(currentLine, remainStart)
+			if match(remain, s:IdentifierPattern) >= 0
+				call setline('.', variableType . strpart(remain, stridx(remain, ',') + 1))
+				exec "normal! O" . variableDefination . ';'
+				exec "normal! 2=="
+			else
+				call setline('.', variableDefination . ';')
+				exec "normal! =="
+			endif
+		else
+			if match(currentLine, '\<' . variableName . '\>\s*,') <0
+				call confirm("I can not erase the variable defination, \nplease do it yourself!")
+			else
+				exec "normal! cf,"
+				exec "normal! =="
+			endif
+		endif
+	endif
+endfunction
+
+function! ExtractMethod() range
+	let scopeIdentifier = GetScopeIdentifierOfCurrentMethod()
+	let variableList = []
+	let varableLocalScopeType = []
+	let variableParentScopeType = []
+	while 1
+		let variableName = MoveToNextVariable(a:lastline)
+		if variableName == ""
+			break
+		endif
+		if index(variableList, variableName) < 0
+			call add(variableList, variableName)
+			let type = GetCurrentVariableType(0)
+			call add(variableParentScopeType, type)
+			let type = GetCurrentVariableType(a:firstline)
+			call add(varableLocalScopeType, type)
+		endif
+	endwhile
+	let methodName = inputdialog("Input the function name:")
+	if methodName != ""
+		" use register z to yank the texts
+		exec "normal! " . a:firstline ."G0\"zy" . a:lastline . "G"
+		if scopeIdentifier == ""
+			call GotoBeginingBracketOfCurrentFunction()
+			exec "normal! %"
+			exec "normal! 2o\ei//\e78a-\eo\eccvoid ". methodName . "(\e"
+		else
+			call GotoBeginingBracketOfCurrentFunction()
+			exec "normal! %"
+			exec "normal! 2o\ei//\e78a-\eo\eccvoid ". scopeIdentifier . "::" . methodName . "(\e"
+		endif		
+		let idx = 0
+		let parameterCount = 0
+		while idx < len(variableList)
+			if varableLocalScopeType[idx] == "" && variableParentScopeType[idx] != ""
+				if parameterCount > 0
+					exec "normal! a, \e"
+				endif
+				if col('.') > 80 && idx < len(variableList) - 1
+					exec "normal! ==A\r\e"
+				endif
+				if variableParentScopeType[idx] =~ '\[\d*\]'
+					let postfix = matchstr(variableParentScopeType[idx], '\[\d*\]')
+					let type = strpart(variableParentScopeType[idx], 0, match(variableParentScopeType[idx], '\[\d*\]'))
+					exec "normal! a" . type . " " . variableList[idx] . postfix . "\e"
+				else
+					exec "normal! a" . variableParentScopeType[idx] . " " . variableList[idx] . "\e"
+				endif
+				let parameterCount = parameterCount + 1
+			endif
+			let idx = idx + 1
+		endwhile
+		exec "normal! a)\e==A\r{\r}\ek\"zp=']"
+
+		if confirm("Replace selection with function call?", "&Yes\n&No", 1) == 1
+			exec "normal! " . a:firstline ."G0c" . a:lastline . "G"
+			exec "normal! a" . methodName . "("
+			let idx = 0
+			let parameterCount = 0
+			while idx < len(variableList)
+				if varableLocalScopeType[idx] == "" && variableParentScopeType[idx] != ""
+					if parameterCount > 0
+						exec "normal! a, \e"
+					endif
+					exec "normal! a" . variableList[idx] . "\e"
+					let parameterCount = parameterCount + 1
+				endif
+				let idx = idx + 1
+			endwhile
+			exec "normal! a);\e==" 
+		endif
+	endif
+endfunction
+
+function! MoveToNextVariable(endLine) 
+	let identifier = ""
+	while search('\([)]\s*\)\@<!' . s:IdentifierPattern . '\(\s*\([(]\|::\|\(\s*' . s:IdentifierPattern . '\)\)\)\@!', 'W', a:endLine) > 0
+		let identifier = expand('<cword>')
+		if index(s:Keywords, expand('<cword>')) >= 0
+			let identifier = ""
+			continue
+		endif
+		break
+	endwhile
+	return identifier
+endfunction
+
+" search variable defination in current function scope
+function! GetCurrentVariableType(topestLine)
+	let variableType = ""
+	let startRow = line('.')
+	let startCol = col('.')
+	let variableName = expand("<cword>")
+	normal! e
+	call GotoBeginingBracketOfCurrentFunction()
+	exec "normal! ?(\r"
+	let stopRow = line('.')
+	if a:topestLine > stopRow 
+		let stopRow = a:topestLine
+	endif
+	call cursor(startRow, 1000)
+	
+
+	let DeclarationPattern = s:TypeIdentifierPattern . '\s*\%(' . s:IdentifierPattern . '[^()]*,\s*\)*\<' . variableName . '\>\%(\[\d*\]\)*'
+	while search(DeclarationPattern, "bW", stopRow) > 0
+		if expand('<cword>') =~ 'return'
+			continue
+		endif
+		let currentLine = getline('.')
+		let commentStart = match(currentLine, '//')
+		if commentStart >= 0 && commentStart < match(currentLine, DeclarationPattern)
+			continue
+		endif
+		let matched = matchstr(currentLine,  DeclarationPattern)
+		let typeend = match(matched, '\(\s*' . s:IdentifierPattern . '\s*[=,][^<>]*\)*\<'. variableName . '\>')
+		let variableType = strpart(matched, 0, typeend)
+		if matched =~ '\[\d*\]'
+			let postfix = matchstr(matched, '\[\d*\]')
+			let variableType = variableType . postfix
+		endif
+		break
+	endwhile
+	call cursor(startRow, startCol)
+	return variableType
+endfunction
+
+function! GetScopeIdentifierOfCurrentMethod()
+	let scopeIdentifier = ""
+	let originRow = line('.')
+	let originCol = col('.')
+	call GotoBeginingBracketOfCurrentFunction()
+	exec "normal! ?(\r"
+	if search(s:IdentifierPattern . '::', 'bW', line('.') - 2) > 0
+		let scopeIdentifier = expand('<cword>')
+	endif
+	call cursor(originRow, originCol)
+	return scopeIdentifier
+endfunction
+
+function! GotoBeginingBracketOfCurrentFunction()
+	if search(s:FunctionPattern, 'bW') > 0
+		if search('{', 'W') <= 0
+			exec 'normal! [[' 
+		endif
+	endif
+endfunction
+
+function! GetParameterListOfCurrentFunction()
+	let parameterList = []
+	if search(s:FunctionPattern, 'bW') > 0
+		call search('(')
+		let startLine = line('.')
+		let startCol = col('.')
+		normal! %
+		let stopLine = line('.')
+		let stopCol = col('.')
+
+		let closeBraceIndex = 0
+		let lineIter = startLine
+		let text = ""
+		while lineIter < stopLine
+			let text = text . getline(lineIter)
+			let closeBraceIndex = closeBraceIndex + strlen(getline(lineIter))
+			let lineIter = lineIter + 1
+		endwhile
+		let text = text . getline(stopLine)
+		let closeBraceIndex = closeBraceIndex + stopCol
+
+		let emptyPair = match(text, '(\s*)')
+		if emptyPair >= 0 && emptyPair <= startCol + 2
+			call add(parameterList, 'NONE')
+			return parameterList
+		endif		
+		
+		let start = startCol - 1
+		while 1
+			let parameter = matchstr(text, s:VariableDeclarationPattern, start)
+			let start = match(text, s:VariableDeclarationPattern, start)
+			let start = start + strlen(parameter)
+			if start >= closeBraceIndex || start < 0
+				break
+			endif
+			if parameter != ""
+				call add(parameterList, parameter)
+			else
+				break
+			endif
+		endwhile
+	endif
+	return parameterList
+endfunction