mirror of
https://github.com/sheerun/vim-polyglot.git
synced 2025-11-09 03:53:52 -05:00
Change python syntax providers, closes #209
This commit is contained in:
Adam Stankiewicz
@@ -1,217 +1,433 @@
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if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'python') == -1
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if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'python-ident') == -1
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" PEP8 compatible Python indent file
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" Language: Python
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" Maintainer: Daniel Hahler <https://daniel.hahler.de/>
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" Prev Maintainer: Hynek Schlawack <hs@ox.cx>
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" Prev Maintainer: Eric Mc Sween <em@tomcom.de> (address invalid)
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" Original Author: David Bustos <bustos@caltech.edu> (address invalid)
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" License: CC0
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"
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" vim-python-pep8-indent - A nicer Python indentation style for vim.
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" Written in 2004 by David Bustos <bustos@caltech.edu>
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" Maintained from 2004-2005 by Eric Mc Sween <em@tomcom.de>
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" Maintained from 2013 by Hynek Schlawack <hs@ox.cx>
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" Maintained from 2017 by Daniel Hahler <https://daniel.hahler.de/>
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"
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" To the extent possible under law, the author(s) have dedicated all copyright
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" and related and neighboring rights to this software to the public domain
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" worldwide. This software is distributed without any warranty.
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" You should have received a copy of the CC0 Public Domain Dedication along
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" with this software. If not, see
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" <http://creativecommons.org/publicdomain/zero/1.0/>.
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" Only load this indent file when no other was loaded.
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if exists("b:did_indent")
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if exists('b:did_indent')
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finish
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endif
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let b:did_indent = 1
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setlocal expandtab
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setlocal nolisp
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setlocal autoindent
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setlocal indentexpr=GetPythonPEPIndent(v:lnum)
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setlocal indentkeys=!^F,o,O,<:>,0),0],0},=elif,=except
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let s:maxoff = 50
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if !exists('g:python_pep8_indent_multiline_string')
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let g:python_pep8_indent_multiline_string = 0
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endif
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let s:block_rules = {
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\ '^\s*elif\>': ['if', 'elif'],
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\ '^\s*except\>': ['try', 'except'],
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\ '^\s*finally\>': ['try', 'except', 'else']
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\ }
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let s:block_rules_multiple = {
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\ '^\s*else\>': ['if', 'elif', 'for', 'try', 'except'],
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\ }
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" Pairs to look for when searching for opening parenthesis.
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" The value is the maximum offset in lines.
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let s:paren_pairs = {'()': 50, '[]': 100, '{}': 1000}
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if &filetype ==# 'pyrex' || &filetype ==# 'cython'
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let b:control_statement = '\v^\s*(class|def|if|while|with|for|except|cdef|cpdef)>'
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else
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let b:control_statement = '\v^\s*(class|def|if|while|with|for|except)>'
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endif
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let s:stop_statement = '^\s*\(break\|continue\|raise\|return\|pass\)\>'
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" Skip strings and comments. Return 1 for chars to skip.
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" jedi* refers to syntax definitions from jedi-vim for call signatures, which
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" are inserted temporarily into the buffer.
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let s:skip_special_chars = 'synIDattr(synID(line("."), col("."), 0), "name") ' .
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\ '=~? "\\vstring|comment|jedi\\S"'
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let s:skip_after_opening_paren = 'synIDattr(synID(line("."), col("."), 0), "name") ' .
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\ '=~? "\\vcomment|jedi\\S"'
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" Also ignore anything concealed.
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" Wrapper around synconcealed for older Vim (7.3.429, used on Travis CI).
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function! s:is_concealed(line, col)
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let concealed = synconcealed(a:line, a:col)
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return len(concealed) && concealed[0]
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endfunction
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if has('conceal')
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let s:skip_special_chars .= '|| s:is_concealed(line("."), col("."))'
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endif
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let s:skip_search = 'synIDattr(synID(line("."), col("."), 0), "name") ' .
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\ '=~? "comment"'
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" Use 'shiftwidth()' instead of '&sw'.
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" (Since Vim patch 7.3.629, 'shiftwidth' can be set to 0 to follow 'tabstop').
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if exists('*shiftwidth')
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function! s:sw()
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return shiftwidth()
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endfunction
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else
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function! s:sw()
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return &shiftwidth
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endfunction
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endif
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function! s:pair_sort(x, y)
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if a:x[0] == a:y[0]
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return a:x[1] == a:y[1] ? 0 : a:x[1] > a:y[1] ? 1 : -1
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else
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return a:x[0] > a:y[0] ? 1 : -1
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endif
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endfunction
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" Find backwards the closest open parenthesis/bracket/brace.
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function! s:SearchParensPair()
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let line = line('.')
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let col = col('.')
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function! s:find_opening_paren(...)
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" optional arguments: line and column (defaults to 1) to search around
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if a:0 > 0
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let view = winsaveview()
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call cursor(a:1, a:0 > 1 ? a:2 : 1)
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let ret = s:find_opening_paren()
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call winrestview(view)
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return ret
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endif
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" Skip strings and comments and don't look too far
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let skip = "line('.') < " . (line - s:maxoff) . " ? dummy :" .
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\ 'synIDattr(synID(line("."), col("."), 0), "name") =~? ' .
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\ '"string\\|comment"'
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" Return if cursor is in a comment.
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exe 'if' s:skip_search '| return [0, 0] | endif'
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" Search for parentheses
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call cursor(line, col)
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let parlnum = searchpair('(', '', ')', 'bW', skip)
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let parcol = col('.')
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" Search for brackets
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call cursor(line, col)
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let par2lnum = searchpair('\[', '', '\]', 'bW', skip)
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let par2col = col('.')
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" Search for braces
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call cursor(line, col)
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let par3lnum = searchpair('{', '', '}', 'bW', skip)
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let par3col = col('.')
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" Get the closest match
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if par2lnum > parlnum || (par2lnum == parlnum && par2col > parcol)
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let parlnum = par2lnum
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let parcol = par2col
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endif
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if par3lnum > parlnum || (par3lnum == parlnum && par3col > parcol)
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let parlnum = par3lnum
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let parcol = par3col
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endif
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" Put the cursor on the match
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if parlnum > 0
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call cursor(parlnum, parcol)
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endif
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return parlnum
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let nearest = [0, 0]
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for [p, maxoff] in items(s:paren_pairs)
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let stopline = max([0, line('.') - maxoff, nearest[0]])
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let next = searchpairpos(
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\ '\V'.p[0], '', '\V'.p[1], 'bnW', s:skip_special_chars, stopline)
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if next[0] && (next[0] > nearest[0] || (next[0] == nearest[0] && next[1] > nearest[1]))
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let nearest = next
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endif
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endfor
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return nearest
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endfunction
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" Find the start of a multi-line statement
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function! s:StatementStart(lnum)
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let lnum = a:lnum
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while 1
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if getline(lnum - 1) =~ '\\$'
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let lnum = lnum - 1
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else
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call cursor(lnum, 1)
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let maybe_lnum = s:SearchParensPair()
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if maybe_lnum < 1
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return lnum
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else
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let lnum = maybe_lnum
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endif
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endif
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endwhile
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function! s:find_start_of_multiline_statement(lnum)
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let lnum = a:lnum
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while lnum > 0
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if getline(lnum - 1) =~# '\\$'
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let lnum = prevnonblank(lnum - 1)
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else
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let [paren_lnum, _] = s:find_opening_paren(lnum)
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if paren_lnum < 1
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return lnum
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else
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let lnum = paren_lnum
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endif
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endif
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endwhile
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endfunction
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" Find the block starter that matches the current line
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function! s:BlockStarter(lnum, block_start_re)
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let lnum = a:lnum
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let maxindent = 10000 " whatever
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while lnum > 1
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let lnum = prevnonblank(lnum - 1)
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if indent(lnum) < maxindent
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if getline(lnum) =~ a:block_start_re
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return lnum
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else
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let maxindent = indent(lnum)
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" It's not worth going further if we reached the top level
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if maxindent == 0
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return -1
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" Find possible indent(s) of the block starter that matches the current line.
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function! s:find_start_of_block(lnum, types, multiple)
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let r = []
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let types = copy(a:types)
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let re = '\V\^\s\*\('.join(a:types, '\|').'\)\>'
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let lnum = a:lnum
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let last_indent = indent(lnum) + 1
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while lnum > 0 && last_indent > 0
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let indent = indent(lnum)
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if indent < last_indent
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for type in types
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let re = '\v^\s*'.type.'>'
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if getline(lnum) =~# re
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if !a:multiple
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return [indent]
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endif
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if index(r, indent) == -1
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let r += [indent]
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endif
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" Remove any handled type, e.g. 'if'.
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call remove(types, index(types, type))
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endif
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endfor
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let last_indent = indent(lnum)
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endif
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endif
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let lnum = prevnonblank(lnum - 1)
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endwhile
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return r
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endfunction
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" Is "expr" true for every position in "lnum", beginning at "start"?
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" (optionally up to a:1 / 4th argument)
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function! s:match_expr_on_line(expr, lnum, start, ...)
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let text = getline(a:lnum)
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let end = a:0 ? a:1 : len(text)
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if a:start > end
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return 1
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endif
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endwhile
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return -1
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let save_pos = getpos('.')
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let r = 1
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for i in range(a:start, end)
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call cursor(a:lnum, i)
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if !(eval(a:expr) || text[i-1] =~# '\s')
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let r = 0
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break
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endif
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endfor
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call setpos('.', save_pos)
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return r
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endfunction
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" Line up with open parenthesis/bracket/brace.
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function! s:indent_like_opening_paren(lnum)
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let [paren_lnum, paren_col] = s:find_opening_paren(a:lnum)
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if paren_lnum <= 0
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return -2
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endif
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let text = getline(paren_lnum)
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let base = indent(paren_lnum)
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let nothing_after_opening_paren = s:match_expr_on_line(
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\ s:skip_after_opening_paren, paren_lnum, paren_col+1)
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let starts_with_closing_paren = getline(a:lnum) =~# '^\s*[])}]'
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if nothing_after_opening_paren
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if starts_with_closing_paren
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let res = base
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else
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let res = base + s:sw()
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endif
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else
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" Indent to match position of opening paren.
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let res = paren_col
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endif
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" If this line is the continuation of a control statement
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" indent further to distinguish the continuation line
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" from the next logical line.
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if text =~# b:control_statement && res == base + s:sw()
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return base + s:sw() * 2
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else
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return res
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endif
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endfunction
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" Match indent of first block of this type.
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function! s:indent_like_block(lnum)
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let text = getline(a:lnum)
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for [multiple, block_rules] in [
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\ [0, s:block_rules],
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\ [1, s:block_rules_multiple]]
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for [line_re, blocks] in items(block_rules)
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if text !~# line_re
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continue
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endif
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let indents = s:find_start_of_block(a:lnum - 1, blocks, multiple)
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if !len(indents)
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return -1
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endif
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if len(indents) == 1
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return indents[0]
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endif
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" Multiple valid indents, e.g. for 'else' with both try and if.
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let indent = indent(a:lnum)
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if index(indents, indent) != -1
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" The indent is valid, keep it.
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return indent
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endif
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" Fallback to the first/nearest one.
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return indents[0]
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endfor
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endfor
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return -2
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endfunction
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function! s:indent_like_previous_line(lnum)
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let lnum = prevnonblank(a:lnum - 1)
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" No previous line, keep current indent.
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if lnum < 1
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return -1
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endif
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let text = getline(lnum)
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let start = s:find_start_of_multiline_statement(lnum)
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let base = indent(start)
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let current = indent(a:lnum)
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" Jump to last character in previous line.
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call cursor(lnum, len(text))
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let ignore_last_char = eval(s:skip_special_chars)
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" Search for final colon that is not inside something to be ignored.
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while 1
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let curpos = getpos('.')[2]
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if curpos == 1 | break | endif
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if eval(s:skip_special_chars) || text[curpos-1] =~# '\s'
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normal! h
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continue
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elseif text[curpos-1] ==# ':'
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return base + s:sw()
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endif
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break
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endwhile
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if text =~# '\\$' && !ignore_last_char
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" If this line is the continuation of a control statement
|
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" indent further to distinguish the continuation line
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" from the next logical line.
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if getline(start) =~# b:control_statement
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return base + s:sw() * 2
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endif
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" Nest (other) explicit continuations only one level deeper.
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return base + s:sw()
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endif
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let empty = getline(a:lnum) =~# '^\s*$'
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" Current and prev line are empty, next is not -> indent like next.
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if empty && a:lnum > 1 &&
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\ (getline(a:lnum - 1) =~# '^\s*$') &&
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\ !(getline(a:lnum + 1) =~# '^\s*$')
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return indent(a:lnum + 1)
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endif
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|
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" 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 empty || current > base - s:sw()
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return base - s:sw()
|
||||
endif
|
||||
" Otherwise, trust the user
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||||
return -1
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||||
endif
|
||||
|
||||
if !empty && s:is_dedented_already(current, base)
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||||
return -1
|
||||
endif
|
||||
|
||||
" In all other cases, line up with the start of the previous statement.
|
||||
return base
|
||||
endfunction
|
||||
|
||||
" If this line is dedented and the number of indent spaces is valid
|
||||
" (multiple of the indentation size), trust the user.
|
||||
function! s:is_dedented_already(current, base)
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let dedent_size = a:current - a:base
|
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return (dedent_size < 0 && a:current % s:sw() == 0) ? 1 : 0
|
||||
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
|
||||
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
|
||||
return 0
|
||||
end
|
||||
endfor
|
||||
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])
|
||||
" First line has indent 0
|
||||
if a:lnum == 1
|
||||
return 0
|
||||
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
|
||||
|
||||
let line = getline(a:lnum)
|
||||
let prevline = getline(a:lnum-1)
|
||||
|
||||
" Multilinestrings: continous, docstring or starting.
|
||||
if s:is_python_string(a:lnum-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
|
||||
endif
|
||||
|
||||
if s:is_python_string(a:lnum-1)
|
||||
" Previous line is (completely) a string.
|
||||
return indent(a:lnum-1)
|
||||
endif
|
||||
|
||||
if match(prevline, '^\s*\%("""\|''''''\)') != -1
|
||||
" docstring.
|
||||
return indent(a:lnum-1)
|
||||
endif
|
||||
|
||||
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
|
||||
" <CR> 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
|
||||
|
||||
" 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)
|
||||
" Parens: If we can find an open parenthesis/bracket/brace, line up with it.
|
||||
let indent = s:indent_like_opening_paren(a:lnum)
|
||||
if indent >= -1
|
||||
return indent
|
||||
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
|
||||
" Blocks: Match indent of first block of this type.
|
||||
let indent = s:indent_like_block(a:lnum)
|
||||
if indent >= -1
|
||||
return indent
|
||||
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)
|
||||
return s:indent_like_previous_line(a:lnum)
|
||||
endfunction
|
||||
|
||||
endif
|
||||
|
||||
Reference in New Issue
Block a user