X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/0d5b5cf86bb19c03a0f569cb4eae49a7fd661888..0c4a52f1f101f61376900fa655ffa256437bedc8:/indent/python.vim diff --git a/indent/python.vim b/indent/python.vim index 5c701e4..f13ae9e 100644 --- a/indent/python.vim +++ b/indent/python.vim @@ -1,6 +1,7 @@ " PEP8 compatible Python indent file " Language: Python -" Maintainer: Hynek Schlawack +" Maintainer: Daniel Hahler +" Prev Maintainer: Hynek Schlawack " Prev Maintainer: Eric Mc Sween (address invalid) " Original Author: David Bustos (address invalid) " License: CC0 @@ -9,6 +10,7 @@ " Written in 2004 by David Bustos " Maintained from 2004-2005 by Eric Mc Sween " Maintained from 2013 by Hynek Schlawack +" Maintained from 2017 by Daniel Hahler " " To the extent possible under law, the author(s) have dedicated all copyright " and related and neighboring rights to this software to the public domain @@ -18,29 +20,37 @@ " . " Only load this indent file when no other was loaded. -if exists("b:did_indent") +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 -setlocal tabstop=4 -setlocal softtabstop=4 -setlocal shiftwidth=4 -let s:maxoff = 50 +if !exists('g:python_pep8_indent_multiline_string') + let g:python_pep8_indent_multiline_string = 0 +endif + +if !exists('g:python_pep8_indent_hang_closing') + let g:python_pep8_indent_hang_closing = 0 +endif + let s:block_rules = { \ '^\s*elif\>': ['if', 'elif'], - \ '^\s*else\>': ['if', 'elif', 'for', 'try', 'except'], \ '^\s*except\>': ['try', 'except'], \ '^\s*finally\>': ['try', 'except', 'else'] \ } -let s:paren_pairs = ['()', '{}', '[]'] -if &ft == 'pyrex' || &ft == 'cython' +let s:block_rules_multiple = { + \ '^\s*else\>': ['if', 'elif', 'for', 'try', 'except'], + \ } +" Pairs to look for when searching for opening parenthesis. +" The value is the maximum offset in lines. +let s:paren_pairs = {'()': 50, '[]': 100, '{}': 1000} + +if &filetype ==# 'pyrex' || &filetype ==# 'cython' let b:control_statement = '\v^\s*(class|def|if|while|with|for|except|cdef|cpdef)>' else let b:control_statement = '\v^\s*(class|def|if|while|with|for|except)>' @@ -78,18 +88,10 @@ if exists('*shiftwidth') endfunction else function! s:sw() - return &sw + return &shiftwidth endfunction endif -function! s:pair_sort(x, y) - if a:x[0] == a:y[0] - return a:x[1] == a:y[1] ? 0 : a:x[1] > a:y[1] ? 1 : -1 - else - return a:x[0] > a:y[0] ? 1 : -1 - endif -endfunction - " Find backwards the closest open parenthesis/bracket/brace. function! s:find_opening_paren(...) " optional arguments: line and column (defaults to 1) to search around @@ -101,29 +103,26 @@ function! s:find_opening_paren(...) return ret endif - let stopline = max([0, line('.') - s:maxoff]) - " Return if cursor is in a comment. exe 'if' s:skip_search '| return [0, 0] | endif' - let positions = [] - for p in s:paren_pairs - call add(positions, searchpairpos( - \ '\V'.p[0], '', '\V'.p[1], 'bnW', s:skip_special_chars, stopline)) + let nearest = [0, 0] + for [p, maxoff] in items(s:paren_pairs) + let stopline = max([0, line('.') - maxoff, nearest[0]]) + let next = searchpairpos( + \ '\V'.p[0], '', '\V'.p[1], 'bnW', s:skip_special_chars, stopline) + if next[0] && (next[0] > nearest[0] || (next[0] == nearest[0] && next[1] > nearest[1])) + let nearest = next + endif endfor - - " Remove empty matches and return the type with the closest match - call filter(positions, 'v:val[0]') - call sort(positions, 's:pair_sort') - - return get(positions, -1, [0, 0]) + return nearest endfunction " Find the start of a multi-line statement function! s:find_start_of_multiline_statement(lnum) let lnum = a:lnum while lnum > 0 - if getline(lnum - 1) =~ '\\$' + if getline(lnum - 1) =~# '\\$' let lnum = prevnonblank(lnum - 1) else let [paren_lnum, _] = s:find_opening_paren(lnum) @@ -136,22 +135,32 @@ function! s:find_start_of_multiline_statement(lnum) endwhile endfunction -" Find the block starter that matches the current line -function! s:find_start_of_block(lnum, types) +" Find possible indent(s) of the block starter that matches the current line. +function! s:find_start_of_block(lnum, types, multiple) + let r = [] + let types = copy(a:types) let re = '\V\^\s\*\('.join(a:types, '\|').'\)\>' - let lnum = a:lnum let last_indent = indent(lnum) + 1 while lnum > 0 && last_indent > 0 - if indent(lnum) < last_indent - if getline(lnum) =~# re - return lnum - endif + let indent = indent(lnum) + if indent < last_indent + for type in types + let re = '\v^\s*'.type.'>' + if getline(lnum) =~# re + if !a:multiple + return [indent] + endif + if index(r, indent) == -1 + let r += [indent] + endif + endif + endfor let last_indent = indent(lnum) endif let lnum = prevnonblank(lnum - 1) endwhile - return 0 + return r endfunction " Is "expr" true for every position in "lnum", beginning at "start"? @@ -166,7 +175,7 @@ function! s:match_expr_on_line(expr, lnum, start, ...) let r = 1 for i in range(a:start, end) call cursor(a:lnum, i) - if !(eval(a:expr) || text[i-1] =~ '\s') + if !(eval(a:expr) || text[i-1] =~# '\s') let r = 0 break endif @@ -186,10 +195,13 @@ function! s:indent_like_opening_paren(lnum) let nothing_after_opening_paren = s:match_expr_on_line( \ s:skip_after_opening_paren, paren_lnum, paren_col+1) - let starts_with_closing_paren = getline(a:lnum) =~ '^\s*[])}]' + let starts_with_closing_paren = getline(a:lnum) =~# '^\s*[])}]' + + let hang_closing = get(b:, 'python_pep8_indent_hang_closing', + \ get(g:, 'python_pep8_indent_hang_closing', 0)) if nothing_after_opening_paren - if starts_with_closing_paren + if starts_with_closing_paren && !hang_closing let res = base else let res = base + s:sw() @@ -203,29 +215,44 @@ function! s:indent_like_opening_paren(lnum) " indent further to distinguish the continuation line " from the next logical line. if text =~# b:control_statement && res == base + s:sw() - return base + s:sw() * 2 - else - return res + " But only if not inside parens itself (Flake's E127). + let [paren_lnum, _] = s:find_opening_paren(paren_lnum) + if paren_lnum <= 0 + return res + s:sw() + endif endif + return res endfunction " Match indent of first block of this type. function! s:indent_like_block(lnum) let text = getline(a:lnum) + for [multiple, block_rules] in [ + \ [0, s:block_rules], + \ [1, s:block_rules_multiple]] + for [line_re, blocks] in items(block_rules) + if text !~# line_re + continue + endif - for [line_re, blocks] in items(s:block_rules) - if text !~# line_re - continue - endif + let indents = s:find_start_of_block(a:lnum - 1, blocks, multiple) + if !len(indents) + return -1 + endif + if len(indents) == 1 + return indents[0] + endif - let lnum = s:find_start_of_block(a:lnum - 1, blocks) - if lnum > 0 - return indent(lnum) - else - return -1 - endif + " Multiple valid indents, e.g. for 'else' with both try and if. + let indent = indent(a:lnum) + if index(indents, indent) != -1 + " The indent is valid, keep it. + return indent + endif + " Fallback to the first/nearest one. + return indents[0] + endfor endfor - return -2 endfunction @@ -248,18 +275,18 @@ function! s:indent_like_previous_line(lnum) " Search for final colon that is not inside something to be ignored. while 1 - let curpos = getpos(".")[2] + let curpos = getpos('.')[2] if curpos == 1 | break | endif - if eval(s:skip_special_chars) || text[curpos-1] =~ '\s' + if eval(s:skip_special_chars) || text[curpos-1] =~# '\s' normal! h continue - elseif text[curpos-1] == ':' + elseif text[curpos-1] ==# ':' return base + s:sw() endif break endwhile - if text =~ '\\$' && !ignore_last_char + if text =~# '\\$' && !ignore_last_char " If this line is the continuation of a control statement " indent further to distinguish the continuation line " from the next logical line. @@ -271,17 +298,26 @@ function! s:indent_like_previous_line(lnum) return base + s:sw() endif + let empty = getline(a:lnum) =~# '^\s*$' + + " Current and prev line are empty, next is not -> indent like next. + if empty && a:lnum > 1 && + \ (getline(a:lnum - 1) =~# '^\s*$') && + \ !(getline(a:lnum + 1) =~# '^\s*$') + return indent(a:lnum + 1) + endif + " If the previous statement was a stop-execution statement or a pass if getline(start) =~# s:stop_statement " Remove one level of indentation if the user hasn't already dedented - if indent(a:lnum) > base - s:sw() + if empty || current > base - s:sw() return base - s:sw() endif " Otherwise, trust the user return -1 endif - if s:is_dedented_already(current, base) + if !empty && s:is_dedented_already(current, base) return -1 endif @@ -299,14 +335,14 @@ endfunction " Is the syntax at lnum (and optionally cnum) a python string? function! s:is_python_string(lnum, ...) let line = getline(a:lnum) - let linelen = len(line) - if linelen < 1 - let linelen = 1 + if a:0 + let cols = type(a:1) != type([]) ? [a:1] : a:1 + else + let cols = range(1, max([1, len(line)])) endif - let cols = a:0 ? type(a:1) != type([]) ? [a:1] : a:1 : range(1, linelen) for cnum in cols if match(map(synstack(a:lnum, cnum), - \ 'synIDattr(v:val,"name")'), 'python\S*String') == -1 + \ "synIDattr(v:val, 'name')"), 'python\S*String') == -1 return 0 end endfor @@ -314,28 +350,67 @@ function! s:is_python_string(lnum, ...) endfunction function! GetPythonPEPIndent(lnum) - " First line has indent 0 if a:lnum == 1 return 0 endif + let line = getline(a:lnum) + let prevline = getline(a:lnum-1) + " Multilinestrings: continous, docstring or starting. - if s:is_python_string(a:lnum) + if s:is_python_string(a:lnum-1, max([1, len(prevline)])) + \ && (s:is_python_string(a:lnum, 1) + \ || match(line, '^\%("""\|''''''\)') != -1) + + " Indent closing quotes as the line with the opening ones. + let match_quotes = match(line, '^\s*\zs\%("""\|''''''\)') + if match_quotes != -1 + " closing multiline string + let quotes = line[match_quotes:(match_quotes+2)] + let pairpos = searchpairpos(quotes, '', quotes, 'b') + if pairpos[0] != 0 + return indent(pairpos[0]) + else + " TODO: test to cover this! + endif + endif + if s:is_python_string(a:lnum-1) - " Previous line is (completely) a string. - return s:indent_like_previous_line(a:lnum) + " Previous line is (completely) a string: keep current indent. + return -1 endif - if match(getline(a:lnum-1), '^\s*\%("""\|''''''\)') != -1 + if match(prevline, '^\s*\%("""\|''''''\)') != -1 " docstring. - return s:indent_like_previous_line(a:lnum) + return indent(a:lnum-1) endif - if s:is_python_string(a:lnum-1, len(getline(a:lnum-1))) - " String started in previous line. - return 0 + let indent_multi = get(b:, 'python_pep8_indent_multiline_string', + \ get(g:, 'python_pep8_indent_multiline_string', 0)) + if match(prevline, '\v%("""|'''''')$') != -1 + " Opening multiline string, started in previous line. + if (&autoindent && indent(a:lnum) == indent(a:lnum-1)) + \ || match(line, '\v^\s+$') != -1 + " with empty line or to split up 'foo("""bar' into + " 'foo("""' and 'bar'. + if indent_multi == -2 + return indent(a:lnum-1) + s:sw() + endif + return indent_multi + endif endif + + " Keep existing indent. + if match(line, '\v^\s*\S') != -1 + return -1 + endif + + if indent_multi != -2 + return indent_multi + endif + + return s:indent_like_opening_paren(a:lnum) endif " Parens: If we can find an open parenthesis/bracket/brace, line up with it.