" Vim indent file" Language:		Python" Maintainer:		Bram Moolenaar <Bram@vim.org>" Original Author:	David Bustos <bustos@caltech.edu>" Last Change:		2006 Jun 18 " Only load this indent file when no other was loaded.if exists("b:did_indent")  finishendiflet b:did_indent = 1 " Some preliminary settingssetlocal nolisp		" Make sure lisp indenting doesn't supersede ussetlocal autoindent	" indentexpr isn't much help otherwise setlocal indentexpr=GetPythonIndent(v:lnum)setlocal indentkeys+=<:>,=elif,=except " Only define the function once.if exists("*GetPythonIndent")  finishendif " Come here when loading the script the first time. let s:maxoff = 50	" maximum number of lines to look backwards for () function GetPythonIndent(lnum)   " If this line is explicitly joined: If the previous line was also joined,  " line it up with that one, otherwise add two 'shiftwidth'  if getline(a:lnum - 1) =~ '\\$'    if a:lnum > 1 && getline(a:lnum - 2) =~ '\\$'      return indent(a:lnum - 1)    endif    return indent(a:lnum - 1) + (exists("g:pyindent_continue") ? eval(g:pyindent_continue) : (&sw * 2))  endif   " If the start of the line is in a string don't change the indent.  if has('syntax_items')	\ && synIDattr(synID(a:lnum, 1, 1), "name") =~ "String$"    return -1  endif   " Search backwards for the previous non-empty line.  let plnum = prevnonblank(v:lnum - 1)   if plnum == 0    " This is the first non-empty line, use zero indent.    return 0  endif   " If the previous line is inside parenthesis, use the indent of the starting  " line.  " Trick: use the non-existing "dummy" variable to break out of the loop when  " going too far back.  call cursor(plnum, 1)  let parlnum = searchpair('(\|{\|\[', '', ')\|}\|\]', 'nbW',	  \ "line('.') < " . (plnum - s:maxoff) . " ? dummy :"	  \ . " synIDattr(synID(line('.'), col('.'), 1), 'name')"	  \ . " =~ '\\(Comment\\|String\\)$'")  if parlnum > 0    let plindent = indent(parlnum)    let plnumstart = parlnum  else    let plindent = indent(plnum)    let plnumstart = plnum  endif    " When inside parenthesis: If at the first line below the parenthesis add  " two 'shiftwidth', otherwise same as previous line.  " i = (a  "       + b  "       + c)  call cursor(a:lnum, 1)  let p = searchpair('(\|{\|\[', '', ')\|}\|\]', 'bW',	  \ "line('.') < " . (a:lnum - s:maxoff) . " ? dummy :"	  \ . " synIDattr(synID(line('.'), col('.'), 1), 'name')"	  \ . " =~ '\\(Comment\\|String\\)$'")  if p > 0    if p == plnum      " When the start is inside parenthesis, only indent one 'shiftwidth'.      let pp = searchpair('(\|{\|\[', '', ')\|}\|\]', 'bW',	  \ "line('.') < " . (a:lnum - s:maxoff) . " ? dummy :"	  \ . " synIDattr(synID(line('.'), col('.'), 1), 'name')"	  \ . " =~ '\\(Comment\\|String\\)$'")      if pp > 0	return indent(plnum) + (exists("g:pyindent_nested_paren") ? eval(g:pyindent_nested_paren) : &sw)      endif      return indent(plnum) + (exists("g:pyindent_open_paren") ? eval(g:pyindent_open_paren) : (&sw * 2))    endif    if plnumstart == p      return indent(plnum)    endif    return plindent  endif    " Get the line and remove a trailing comment.  " Use syntax highlighting attributes when possible.  let pline = getline(plnum)  let pline_len = strlen(pline)  if has('syntax_items')    " If the last character in the line is a comment, do a binary search for    " the start of the comment.  synID() is slow, a linear search would take    " too long on a long line.    if synIDattr(synID(plnum, pline_len, 1), "name") =~ "Comment$"      let min = 1      let max = pline_len      while min < max	let col = (min + max) / 2	if synIDattr(synID(plnum, col, 1), "name") =~ "Comment$"	  let max = col	else	  let min = col + 1	endif      endwhile      let pline = strpart(pline, 0, min - 1)    endif  else    let col = 0    while col < pline_len      if pline[col] == '#'	let pline = strpart(pline, 0, col)	break      endif      let col = col + 1    endwhile  endif   " If the previous line ended with a colon, indent this line  if pline =~ ':\s*$'    return plindent + &sw  endif   " If the previous line was a stop-execution statement...  if getline(plnum) =~ '^\s*\(break\|continue\|raise\|return\|pass\)\>'    " See if the user has already dedented    if indent(a:lnum) > indent(plnum) - &sw      " If not, recommend one dedent      return indent(plnum) - &sw    endif    " Otherwise, trust the user    return -1  endif   " If the current line begins with a keyword that lines up with "try"  if getline(a:lnum) =~ '^\s*\(except\|finally\)\>'    let lnum = a:lnum - 1    while lnum >= 1      if getline(lnum) =~ '^\s*\(try\|except\)\>'	let ind = indent(lnum)	if ind >= indent(a:lnum)	  return -1	" indent is already less than this	endif	return ind	" line up with previous try or except      endif      let lnum = lnum - 1    endwhile    return -1		" no matching "try"!  endif   " If the current line begins with a header keyword, dedent  if getline(a:lnum) =~ '^\s*\(elif\|else\)\>'     " Unless the previous line was a one-liner    if getline(plnumstart) =~ '^\s*\(for\|if\|try\)\>'      return plindent    endif     " Or the user has already dedented    if indent(a:lnum) <= plindent - &sw      return -1    endif     return plindent - &sw  endif   " When after a () construct we probably want to go back to the start line.  " a = (b  "       + c)  " here  if parlnum > 0    return plindent  endif   return -1 endfunction " vim:sw=2