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Call node file detection less often (fix #37) #38

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26 changes: 3 additions & 23 deletions plugin/node.vim
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Original file line number Diff line number Diff line change
Expand Up @@ -12,36 +12,16 @@ function! s:detect(dir)
let is_node = 0
let is_node = is_node || filereadable(dir . "/package.json")
let is_node = is_node || isdirectory(dir . "/node_modules")
if is_node | return node#initialize(dir) | endif
if is_node | call node#javascript() | return node#initialize(dir) | endif

let parent = fnamemodify(dir, ":h")
if parent == dir | return | endif
let dir = parent
endwhile
endfunction

function! s:permutate(ft)
" Don't know right now how to detect javascript.jsx and other permutations
" without precomputing them in advance. Please let me know if you do.
return [a:ft, a:ft . ".*", "*." . a:ft, "*." . a:ft . ".*"]
endfunction

function! s:flatten(list)
let values = []
for value in a:list
if type(value) == type([]) | call extend(values, value)
else | add(values, value)
endif
endfor
return values
endfunction

augroup Node
au!
au VimEnter * if empty(expand("<amatch>")) | call s:detect(getcwd()) | endif
au BufRead,BufNewFile * call s:detect(expand("<amatch>:p"))

let s:filetype_patterns = s:flatten(map(s:filetypes, "<SID>permutate(v:val)"))
let s:filetype_patterns_joined = join(s:filetype_patterns, ",")
execute "au FileType " s:filetype_patterns_joined " call node#javascript()"
let s:filetype_patterns_joined = join(s:filetypes, ",")
execute "au FileType " s:filetype_patterns_joined ' call <SID>detect(expand("\<afile>:p"))'
augroup end