Add support for rename (documentChanges)

autoload/ale/rename.vim

@@ -83,6 +83,30 @@ function! ale#rename#HandleTSServerResponse(conn_id, response) abort
     \}, v:true)
 endfunction
 
+function! s:getChanges(workspace_edit) abort
+    let l:changes = {}
+
+    if has_key(a:workspace_edit, 'changes') && !empty(a:workspace_edit.changes)
+        return a:workspace_edit.changes
+    elseif has_key(a:workspace_edit, 'documentChanges')
+        let l:document_changes = []
+        if type(a:workspace_edit.documentChanges) is v:t_dict &&
+        \ has_key(a:workspace_edit.documentChanges, 'edits')
+            call add(l:document_changes, a:workspace_edit.documentChanges)
+        elseif type(a:workspace_edit.documentChanges) is v:t_list
+            let l:document_changes = a:workspace_edit.documentChanges
+        endif
+
+        for l:text_document_edit in l:document_changes
+            let l:filename = l:text_document_edit.textDocument.uri
+            let l:edits = l:text_document_edit.edits
+            let l:changes[l:filename] = l:edits
+        endfor
+    endif
+
+    return l:changes
+endfunction
+
 function! ale#rename#HandleLSPResponse(conn_id, response) abort
     if has_key(a:response, 'id')
     \&& has_key(s:rename_map, a:response.id)
@@ -94,9 +118,9 @@ function! ale#rename#HandleLSPResponse(conn_id, response) abort
             return
         endif
 
-        let l:workspace_edit = a:response.result
+        let l:changes_map = s:getChanges(a:response.result)
 
-        if !has_key(l:workspace_edit, 'changes') || empty(l:workspace_edit.changes)
+        if empty(l:changes_map)
             call s:message('No changes received from server')
 
             return
@@ -104,8 +128,8 @@ function! ale#rename#HandleLSPResponse(conn_id, response) abort
 
         let l:changes = []
 
-        for l:file_name in keys(l:workspace_edit.changes)
+        for l:file_name in keys(l:changes_map)
-            let l:text_edits = l:workspace_edit.changes[l:file_name]
+            let l:text_edits = l:changes_map[l:file_name]
             let l:text_changes = []
 
             for l:edit in l:text_edits

test/test_rename.vader

@@ -327,6 +327,115 @@ Execute(Code actions from LSP should be handled):
   \ ],
   \ g:code_actions
 
+Execute(DocumentChanges from LSP should be handled):
+  call ale#rename#HandleLSPResponse(1, {
+  \ 'id': 3,
+  \ 'result': {
+  \   'documentChanges': [
+  \     {
+  \       'textDocument': {
+  \         'version': 1.0,
+  \         'uri': 'file:///foo/bar/file1.ts',
+  \       },
+  \       'edits': [
+  \         {
+  \           'range': {
+  \             'start': {
+  \               'line': 1,
+  \               'character': 2,
+  \             },
+  \             'end': {
+  \               'line': 3,
+  \               'character': 4,
+  \             },
+  \           },
+  \           'newText': 'bla123',
+  \         },
+  \       ],
+  \     },
+  \   ],
+  \ },
+  \})
+
+  AssertEqual
+  \ [
+  \   {
+  \     'description': 'rename',
+  \     'changes': [
+  \       {
+  \         'fileName': '/foo/bar/file1.ts',
+  \         'textChanges': [
+  \            {
+  \              'start': {
+  \                'line': 2,
+  \                'offset': 3,
+  \              },
+  \              'end': {
+  \                'line': 4,
+  \                'offset': 5,
+  \              },
+  \              'newText': 'bla123',
+  \            },
+  \         ],
+  \       },
+  \     ],
+  \   }
+  \ ],
+  \ g:code_actions
+
+Execute(Single DocumentChange from LSP should be handled):
+  call ale#rename#HandleLSPResponse(1, {
+  \ 'id': 3,
+  \ 'result': {
+  \   'documentChanges': {
+  \     'textDocument': {
+  \       'version': 1.0,
+  \       'uri': 'file:///foo/bar/file1.ts',
+  \     },
+  \     'edits': [
+  \       {
+  \         'range': {
+  \           'start': {
+  \             'line': 1,
+  \             'character': 2,
+  \           },
+  \           'end': {
+  \             'line': 3,
+  \             'character': 4,
+  \           },
+  \         },
+  \         'newText': 'bla123',
+  \       },
+  \     ],
+  \   },
+  \ },
+  \})
+
+  AssertEqual
+  \ [
+  \   {
+  \     'description': 'rename',
+  \     'changes': [
+  \       {
+  \         'fileName': '/foo/bar/file1.ts',
+  \         'textChanges': [
+  \            {
+  \              'start': {
+  \                'line': 2,
+  \                'offset': 3,
+  \              },
+  \              'end': {
+  \                'line': 4,
+  \                'offset': 5,
+  \              },
+  \              'newText': 'bla123',
+  \            },
+  \         ],
+  \       },
+  \     ],
+  \   }
+  \ ],
+  \ g:code_actions
 Execute(LSP should perform no action when no result):
   call ale#rename#HandleLSPResponse(1, {
   \ 'id': 3,