if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'vim') == -1
" Vim indent file
" Language: Python
" Maintainer: Bram Moolenaar <Bram@vim.org>
" Original Author: David Bustos <bustos@caltech.edu>
" Last Change: 2013 Jul 9
" Only load this indent file when no other was loaded.
if exists("b:did_indent")
finish
endif
let b:did_indent = 1
" Some preliminary settings
setlocal nolisp " Make sure lisp indenting doesn't supersede us
setlocal autoindent " indentexpr isn't much help otherwise
setlocal indentexpr=GetPythonIndent(v:lnum)
setlocal indentkeys+=<:>,=elif,=except
" Only define the function once.
if exists("*GetPythonIndent")
finish
endif
let s:keepcpo= &cpo
set cpo&vim
" 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) : (shiftwidth() * 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\\|Todo\\|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\\|Todo\\|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\\|Todo\\|String\\)$'")
if pp > 0
return indent(plnum) + (exists("g:pyindent_nested_paren") ? eval(g:pyindent_nested_paren) : shiftwidth())
endif
return indent(plnum) + (exists("g:pyindent_open_paren") ? eval(g:pyindent_open_paren) : (shiftwidth() * 2))
endif
if plnumstart == p
return indent(plnum)
endif
return plindent
endif
" Get the line and remove a trailing comment.
" Use syntax highlighting attributes when possible.
let pline = getline(plnum)
let pline_len = strlen(pline)
if has('syntax_items')
" If the last character in the line is a comment, do a binary search for
" the start of the comment. synID() is slow, a linear search would take
" too long on a long line.
if synIDattr(synID(plnum, pline_len, 1), "name") =~ "\\(Comment\\|Todo\\)$"
let min = 1
let max = pline_len
while min < max
let col = (min + max) / 2
if synIDattr(synID(plnum, col, 1), "name") =~ "\\(Comment\\|Todo\\)$"
let max = col
else
let min = col + 1
endif
endwhile
let pline = strpart(pline, 0, min - 1)
endif
else
let col = 0
while col < pline_len
if pline[col] == '#'
let pline = strpart(pline, 0, col)
break
endif
let col = col + 1
endwhile
endif
" If the previous line ended with a colon, indent this line
if pline =~ ':\s*$'
return plindent + shiftwidth()
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) - shiftwidth()
" If not, recommend one dedent
return indent(plnum) - shiftwidth()
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 - shiftwidth()
return -1
endif
return plindent - shiftwidth()
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
let &cpo = s:keepcpo
unlet s:keepcpo
" vim:sw=2
endif
if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'python') == -1
" PEP8 compatible Python indent file
" Only load this indent file when no other was loaded.
if exists("b:did_indent")
finish
endif
let b:did_indent = 1
setlocal expandtab
setlocal nolisp
setlocal autoindent
setlocal indentexpr=GetPythonPEPIndent(v:lnum)
setlocal indentkeys=!^F,o,O,<:>,0),0],0},=elif,=except
let s:maxoff = 50
" Find backwards the closest open parenthesis/bracket/brace.
function! s:SearchParensPair()
let line = line('.')
let col = col('.')
" Skip strings and comments and don't look too far
let skip = "line('.') < " . (line - s:maxoff) . " ? dummy :" .
\ 'synIDattr(synID(line("."), col("."), 0), "name") =~? ' .
\ '"string\\|comment"'
" Search for parentheses
call cursor(line, col)
let parlnum = searchpair('(', '', ')', 'bW', skip)
let parcol = col('.')
" Search for brackets
call cursor(line, col)
let par2lnum = searchpair('\[', '', '\]', 'bW', skip)
let par2col = col('.')
" Search for braces
call cursor(line, col)
let par3lnum = searchpair('{', '', '}', 'bW', skip)
let par3col = col('.')
" Get the closest match
if par2lnum > parlnum || (par2lnum == parlnum && par2col > parcol)
let parlnum = par2lnum
let parcol = par2col
endif
if par3lnum > parlnum || (par3lnum == parlnum && par3col > parcol)
let parlnum = par3lnum
let parcol = par3col
endif
" Put the cursor on the match
if parlnum > 0
call cursor(parlnum, parcol)
endif
return parlnum
endfunction
" Find the start of a multi-line statement
function! s:StatementStart(lnum)
let lnum = a:lnum
while 1
if getline(lnum - 1) =~ '\\$'
let lnum = lnum - 1
else
call cursor(lnum, 1)
let maybe_lnum = s:SearchParensPair()
if maybe_lnum < 1
return lnum
else
let lnum = maybe_lnum
endif
endif
endwhile
endfunction
" Find the block starter that matches the current line
function! s:BlockStarter(lnum, block_start_re)
let lnum = a:lnum
let maxindent = 10000 " whatever
while lnum > 1
let lnum = prevnonblank(lnum - 1)
if indent(lnum) < maxindent
if getline(lnum) =~ a:block_start_re
return lnum
else
let maxindent = indent(lnum)
" It's not worth going further if we reached the top level
if maxindent == 0
return -1
endif
endif
endif
endwhile
return -1
endfunction
function! GetPythonPEPIndent(lnum)
let scol = col('.')
" First line has indent 0
if a:lnum == 1
return 0
endif
" If we can find an open parenthesis/bracket/brace, line up with it.
call cursor(a:lnum, 1)
let parlnum = s:SearchParensPair()
if parlnum > 0
let parcol = col('.')
let matches = matchlist(getline(a:lnum), '^\(\s*\)[])}]')
if len(matches) == 0
let closing_paren = 0
let closing_paren_pos = 0
else
let closing_paren = 1
let closing_paren_pos = len(matches[1])
endif
if match(getline(parlnum), '[([{]\s*$', parcol - 1) != -1
if closing_paren
return indent(parlnum)
else
return indent(parlnum) + &shiftwidth
endif
elseif a:lnum - 1 != parlnum
if closing_paren && closing_paren_pos > scol
return indent(parlnum)
else
let lastindent = match(getline(a:lnum - 1), '\S')
if lastindent != -1 && lastindent < parcol
return lastindent
endif
endif
endif
" If we line up with an opening column there is a special case
" we want to handle: a docstring as argument. In that case we
" don't want to line up with the paren but with the statement
" imagine foo(doc=""" as example
echo getline(parlnum)
if match(getline(parlnum), '\("""\|' . "'''" . '\)\s*$') != -1
return indent(parlnum)
endif
return parcol
endif
" Examine this line
let thisline = getline(a:lnum)
let thisindent = indent(a:lnum)
" If the line starts with 'elif' or 'else', line up with 'if' or 'elif'
if thisline =~ '^\s*\(elif\|else\)\>'
let bslnum = s:BlockStarter(a:lnum, '^\s*\(if\|elif\)\>')
if bslnum > 0
return indent(bslnum)
else
return -1
endif
endif
" If the line starts with 'except' or 'finally', line up with 'try'
" or 'except'
if thisline =~ '^\s*\(except\|finally\)\>'
let bslnum = s:BlockStarter(a:lnum, '^\s*\(try\|except\)\>')
if bslnum > 0
return indent(bslnum)
else
return -1
endif
endif
" Examine previous line
let plnum = a:lnum - 1
let pline = getline(plnum)
let sslnum = s:StatementStart(plnum)
" If the previous line is blank, keep the same indentation
if pline =~ '^\s*$'
return -1
endif
" If this line is explicitly joined, try to find an indentation that looks
" good.
if pline =~ '\\$'
let compound_statement = '^\s*\(if\|while\|from\|import\|for\s.*\sin\|except\)\s*'
let maybe_indent = matchend(getline(sslnum), compound_statement)
if maybe_indent != -1
return maybe_indent
else
return indent(sslnum) + &sw * 2
endif
endif
" If the previous line ended with a colon and is not a comment, indent
" relative to statement start.
if pline =~ '^[^#]*:\s*\(#.*\)\?$'
return indent(sslnum) + &sw
endif
" If the previous line was a stop-execution statement or a pass
if getline(sslnum) =~ '^\s*\(break\|continue\|raise\|return\|pass\)\>'
" See if the user has already dedented
if indent(a:lnum) > indent(sslnum) - &sw
" If not, recommend one dedent
return indent(sslnum) - &sw
endif
" Otherwise, trust the user
return -1
endif
" In all other cases, line up with the start of the previous statement.
return indent(sslnum)
endfunction
endif
