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Make folding much faster in some cases #743

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Mar 9, 2017
Merged

Make folding much faster in some cases #743

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21 changes: 15 additions & 6 deletions autoload/pymode/folding.vim
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Original file line number Diff line number Diff line change
Expand Up @@ -216,6 +216,15 @@ endfunction "}}}

function! s:Is_opening_folding(lnum) "{{{
" Helper function to see if docstring is opening or closing

" Cache the result so the loop runs only once per change
if get(b:, 'fold_changenr', -1) == changenr()
return b:fold_cache[a:lnum] "If odd then it is an opening
else
let b:fold_changenr = changenr()
let b:fold_cache = []
endif

let number_of_folding = 0 " To be analized if odd/even to inform if it is opening or closing.
let has_open_docstring = 0 " To inform is already has an open docstring.
let extra_docstrings = 0 " To help skipping ''' and """ which are not docstrings
Expand All @@ -224,7 +233,9 @@ function! s:Is_opening_folding(lnum) "{{{
" not just triple quotes (that could be a regular string).
"
" Iterater over all lines from the start until current line (inclusive)
for i in range(1, a:lnum)
for i in range(1, line('$'))
call add(b:fold_cache, number_of_folding % 2)

let i_line = getline(i)

if i_line =~ s:doc_line_regex
Expand Down Expand Up @@ -255,11 +266,9 @@ function! s:Is_opening_folding(lnum) "{{{
endif
endfor

if fmod(number_of_folding, 2) == 1 "If odd then it is an opening
return 1
else
return 0
endif
call add(b:fold_cache, number_of_folding % 2)

return b:fold_cache[a:lnum]
endfunction "}}}

" vim: fdm=marker:fdl=0