Split out providers.vim

CHANGELOG.md

@@ -3,6 +3,10 @@ CHANGELOG
 
 ## [unreleased]
 
+### Added
+
+- New provider `:Clap providers` for listing all the providers by splitting out the previous anonymous `_` provider.([#242](https://github.com/liuchengxu/vim-clap/pull/242))
+
 ### Improved
 
 - Refine `:Clap debug` and require it in the bug report. ([#241](https://github.com/liuchengxu/vim-clap/pull/241))

autoload/clap.vim

@@ -95,12 +95,6 @@ function! s:inject_default_impl_is_ok(provider_info) abort
   return v:true
 endfunction
 
-function! s:_sink(selected) abort
-  let provider = matchstr(a:selected, '^\(.*\)\ze:')
-  " a sink for "Clap _" (dispatch to other builtin clap providers).
-  call timer_start(0, {-> clap#_for(provider)})
-endfunction
-
 function! clap#_init() abort
   if has_key(g:clap.provider._(), 'source')
     let Source = g:clap.provider._().source
@@ -134,7 +128,7 @@ function! clap#_init() abort
   call g:clap.provider.init_display_win()
 
   " Ensure the filetype is empty on init.
-  " Each provider can set its own filetype for the highlight purpose.
+  " Each provider can set its own syntax for the highlight purpose.
   call g:clap.display.setbufvar('&filetype', '')
 endfunction
 
@@ -308,32 +302,8 @@ function! clap#for(provider_id_or_alias) abort
   call g:clap.open_win()
 endfunction
 
-function! s:_source() abort
-  if !exists('s:global_source')
-    let s:global_source = []
-    for provider_id in s:builtin_providers
-      let provider_path = globpath(&runtimepath, 'autoload/clap/provider/'.provider_id.'.vim')
-      if file_readable(provider_path)
-        let desc_line = readfile(provider_path, '', 2)[-1]
-        let desc = matchstr(desc_line, '^.*Description: \zs\(.*\)\ze\.\?$')
-        if empty(desc)
-          call add(s:global_source, provider_id.':')
-        else
-          call add(s:global_source, provider_id.': '.desc)
-        endif
-      endif
-    endfor
-  endif
-  return s:global_source
-endfunction
-
 if !exists('g:clap')
   call clap#init#()
-  call clap#register('_', {
-        \ 'source': function('s:_source'),
-        \ 'sink': function('s:_sink'),
-        \ 'on_enter': { -> g:clap.display.setbufvar('&syntax', 'clap_global') },
-        \ })
 endif
 
 function! s:parse_opts(args) abort
@@ -382,7 +352,7 @@ function! clap#(bang, ...) abort
   endif
 
   if a:0 == 0
-    let provider_id_or_alias = '_'
+    let provider_id_or_alias = 'providers'
     let g:clap.provider.args = []
   else
     if a:000 == ['debug']

autoload/clap/provider/providers.vim

@@ -0,0 +1,38 @@
+" Author: liuchengxu <xuliuchengxlc@gmail.com>
+" Description: List all the providers.
+
+let s:save_cpo = &cpoptions
+set cpoptions&vim
+
+let s:providers = {}
+
+function! s:providers.sink(selected) abort
+  let provider = matchstr(a:selected, '^\(.*\)\ze:')
+  " a sink for "Clap providers" (dispatch to other builtin clap providers).
+  call timer_start(0, {-> clap#_for(provider)})
+endfunction
+
+function! s:providers.source() abort
+  if !exists('s:global_source')
+    let s:global_source = []
+    for provider_id in g:clap#builtin_providers
+      let provider_path = globpath(&runtimepath, 'autoload/clap/provider/'.provider_id.'.vim')
+      if file_readable(provider_path)
+        let desc_line = readfile(provider_path, '', 2)[-1]
+        let desc = matchstr(desc_line, '^.*Description: \zs\(.*\)\ze\.\?$')
+        if empty(desc)
+          call add(s:global_source, provider_id.':')
+        else
+          call add(s:global_source, provider_id.': '.desc)
+        endif
+      endif
+    endfor
+  endif
+  return s:global_source
+endfunction
+
+let s:providers.syntax = 'clap_providers'
+let g:clap#provider#providers# = s:providers
+
+let &cpoptions = s:save_cpo
+unlet s:save_cpo