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optimize flattening twice in s:expand()

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itchyny
2020-11-20 21:35:16 +09:00
parent 543ee323a4
commit 46999f167a
1 changed files with 3 additions and 12 deletions
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15
autoload/lightline.vim
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@@ -2,7 +2,7 @@
" Filename: autoload/lightline.vim
" Author: itchyny
" License: MIT License
" Last Change: 2020/11/05 20:04:51.
" Last Change: 2020/11/20 21:34:03.
" =============================================================================
let s:save_cpo = &cpo
@@ -346,23 +346,14 @@ function! s:convert(name, index) abort
endif
endfunction
function! s:flatten_twice(xss) abort
let ys = []
for xs in a:xss
for x in xs
let ys += x
endfor
endfor
return ys
endfunction
function! s:expand(components) abort
let components = []
let expanded = []
let indices = []
let prevtype = ''
let previndex = -1
let xs = s:flatten_twice(map(deepcopy(a:components), 'map(v:val, "s:convert(v:val, ''" . v:key . "'')")'))
let xs = []
call map(deepcopy(a:components), 'map(v:val, "extend(xs, s:convert(v:val, ''" . v:key . "''))")')
for [component, expand, type, index] in xs
if prevtype !=# type
for i in range(previndex + 1, max([previndex, index - 1]))