mirror of
https://github.com/SpaceVim/SpaceVim.git
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79 lines
2.4 KiB
VimL
79 lines
2.4 KiB
VimL
" ___vital___
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" NOTE: lines between '" ___vital___' is generated by :Vitalize.
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" Do not modify the code nor insert new lines before '" ___vital___'
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function! s:_SID() abort
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return matchstr(expand('<sfile>'), '<SNR>\zs\d\+\ze__SID$')
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endfunction
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execute join(['function! vital#_gina#App#Emitter#import() abort', printf("return map({'subscribe': '', 'unsubscribe': '', 'emit': '', 'add_middleware': '', 'remove_middleware': ''}, \"vital#_gina#function('<SNR>%s_' . v:key)\")", s:_SID()), 'endfunction'], "\n")
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delfunction s:_SID
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" ___vital___
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let s:listeners = {}
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let s:middlewares = []
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function! s:subscribe(name, listener, ...) abort
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let dict = get(a:000, 0, v:null)
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let s:listeners[a:name] = get(s:listeners, a:name, [])
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call add(s:listeners[a:name], [a:listener, dict])
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endfunction
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function! s:unsubscribe(...) abort
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if a:0 == 0
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let s:listeners = {}
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elseif a:0 == 1
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let s:listeners[a:1] = []
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else
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let dict = a:0 == 3 ? a:3 : v:null
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let s:listeners[a:1] = get(s:listeners, a:1, [])
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let index = index(s:listeners[a:1], [a:2, dict])
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if index != -1
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call remove(s:listeners[a:1], index)
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endif
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endif
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endfunction
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function! s:add_middleware(middleware) abort
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call add(s:middlewares, a:middleware)
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endfunction
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function! s:remove_middleware(...) abort
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if a:0 == 0
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let s:middlewares = []
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else
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let index = index(s:middlewares, a:1)
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if index != -1
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call remove(s:middlewares, index)
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endif
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endif
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endfunction
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function! s:emit(name, ...) abort
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let attrs = copy(a:000)
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let listeners = copy(get(s:listeners, a:name, []))
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let middlewares = map(s:middlewares, 'extend(copy(s:middleware), v:val)')
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for middleware in middlewares
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call call(middleware.on_emit_pre, [a:name, listeners, attrs], middleware)
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endfor
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for [l:Listener, dict] in listeners
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if empty(dict)
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call call(Listener, attrs)
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else
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call call(Listener, attrs, dict)
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endif
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endfor
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for middleware in middlewares
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call call(middleware.on_emit_post, [a:name, listeners, attrs], middleware)
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endfor
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endfunction
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" Middleware skeleton --------------------------------------------------------
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let s:middleware = {}
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function! s:middleware.on_emit_pre(name, listeners, attrs) abort
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" Users can override this method
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endfunction
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function! s:middleware.on_emit_post(name, listeners, attrs) abort
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" Users can override this method
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endfunction
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