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2f38ed11c9
The exists('g:loaded_foo') convention is rather common, and may be
relied upon in some cases. It's also very unlikely that a user or plugin
has any reason to set g:loaded_foo to zero, so the principle of least
surprise can be brushed aside here.
https://github.com/neovim/neovim/issues/6107#issuecomment-279532143
52 lines
1.3 KiB
VimL
52 lines
1.3 KiB
VimL
" The Python3 provider uses a Python3 host to emulate an environment for running
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" python3 plugins. See ":help provider".
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"
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" Associating the plugin with the Python3 host is the first step because
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" plugins will be passed as command-line arguments
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if exists('g:loaded_python3_provider')
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finish
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endif
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let g:loaded_python3_provider = 1
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let [s:prog, s:err] = provider#pythonx#Detect(3)
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function! provider#python3#Prog()
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return s:prog
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endfunction
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function! provider#python3#Error()
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return s:err
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endfunction
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if s:prog == ''
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" Detection failed
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finish
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endif
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" The Python3 provider plugin will run in a separate instance of the Python3
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" host.
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call remote#host#RegisterClone('legacy-python3-provider', 'python3')
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call remote#host#RegisterPlugin('legacy-python3-provider', 'script_host.py', [])
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function! provider#python3#Call(method, args)
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if s:err != ''
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return
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endif
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if !exists('s:host')
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let s:rpcrequest = function('rpcrequest')
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" Ensure that we can load the Python3 host before bootstrapping
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try
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let s:host = remote#host#Require('legacy-python3-provider')
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catch
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let s:err = v:exception
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echohl WarningMsg
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echomsg v:exception
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echohl None
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return
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endtry
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endif
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return call(s:rpcrequest, insert(insert(a:args, 'python_'.a:method), s:host))
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endfunction
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