Add support for CodeAction literals

Closes #94

- Advertise support with the client capabilities. It's not clear what
  the server is meant to do with the `CodeActionKind` config so the
  top-level values are used.
- Check whether the results look like a `CodeAction` or a `Command` and
  either apply the edit or execute the command as appropriate. When a
  `CodeAction` has both an `edit` and a `command` they are both applied
  in that order.

CHANGELOG.md

@@ -9,6 +9,7 @@
   one action has a `title` that matches the pattern it will be run
   automatically.
 - Bug fix: Handle workspace edits that have double quotes.
+- Add support for `CodeAction` literals.
 
 # 0.3.0
 

autoload/lsc/edit.vim

@@ -16,15 +16,28 @@ function! s:SelectAction(result, action_filter) abort
     call lsc#message#show('No actions available')
     return
   endif
-  let choice = a:action_filter(a:result)
-  if type(choice) == v:t_dict
-    call lsc#server#userCall('workspace/executeCommand',
-        \ {'command': choice['command'],
-        \ 'arguments': choice['arguments']},
-        \ {_->0})
+  let l:choice = a:action_filter(a:result)
+  if type(l:choice) == v:t_dict
+    if has_key(l:choice, 'command') && type(l:choice.command) == v:t_string
+      call s:ExecuteCommand(l:choice)
+    else
+      if has_key(l:choice, 'edit') && type(l:choice.edit) == v:t_dict
+        call lsc#edit#apply(l:choice.edit)
+      endif
+      if has_key(l:choice, 'command') && type(l:choice.command) == v:t_dict
+        call s:ExecuteCommand(l:choice.command)
+      endif
+    endif
   endif
 endfunction
 
+function! s:ExecuteCommand(command) abort
+  call lsc#server#userCall('workspace/executeCommand',
+      \ {'command': a:command.command,
+      \ 'arguments': a:command.arguments},
+      \ {_->0})
+endfunction
+
 " TODO - handle visual selection for range
 function! s:TextDocumentRangeParams() abort
   return { 'textDocument': {'uri': lsc#uri#documentUri()},

autoload/lsc/server.vim

@@ -185,6 +185,11 @@ function! s:ClientCapabilities() abort
     \     'snippetSupport': v:false,
     \   },
     \   'definition': {'dynamicRegistration': v:false},
+    \   'codeAction': {
+    \     'codeActionLiteralSupport': {
+    \       'codeActionKind': {'valueSet': ['quickfix', 'refactor', 'source']}
+    \     }
+    \   },
     \ }
     \}
 endfunction