Use textDocument/codeLens data in the actions menu when applicable #2 (#26848)

Re-applies what's been reverted in
https://github.com/zed-industries/zed/pull/26832 with an action-related
fix in
64b5d37d32

Before, actions were resolved only if `data` is present and either of
the possible fields is empty:

e842b4eade/crates/project/src/lsp_store.rs (L1632-L1633)

But Zed resolves completions and inlays once, unconditionally, and the
reverted PR applied the same strategy to actions.
That did not work despite the spec not forbidding `data`-less actions to
be resolved.

Soon, it starts to work due to
https://github.com/rust-lang/rust-analyzer/pull/19369 but it seems safer
to restore the original filtering code.

Code lens have no issues with `data`-less resolves:

220d913cbc/crates/rust-analyzer/src/handlers/request.rs (L1618-L1620)

so the same approach as completions and inlays is kept: resolve once.


Release Notes:

- N/A

crates/proto/proto/zed.proto

@@ -346,7 +346,12 @@ message Envelope {
         GitDiff git_diff = 319;
         GitDiffResponse git_diff_response = 320;
 
-        GitInit git_init = 321; // current max
+        GitInit git_init = 321;
+
+        CodeLens code_lens = 322;
+        GetCodeLens get_code_lens = 323;
+        GetCodeLensResponse get_code_lens_response = 324;
+        RefreshCodeLens refresh_code_lens = 325;  // current max
     }
 
     reserved 87 to 88;
@@ -1263,6 +1268,25 @@ message RefreshInlayHints {
     uint64 project_id = 1;
 }
 
+message CodeLens {
+    bytes lsp_lens = 1;
+}
+
+message GetCodeLens {
+    uint64 project_id = 1;
+    uint64 buffer_id = 2;
+    repeated VectorClockEntry version = 3;
+}
+
+message GetCodeLensResponse {
+    repeated CodeAction lens_actions = 1;
+    repeated VectorClockEntry version = 2;
+}
+
+message RefreshCodeLens {
+    uint64 project_id = 1;
+}
+
 message MarkupContent {
     bool is_markdown = 1;
     string value = 2;
@@ -1298,9 +1322,11 @@ message CodeAction {
     Anchor end = 3;
     bytes lsp_action = 4;
     Kind kind = 5;
+    bool resolved = 6;
     enum Kind {
         Action = 0;
         Command = 1;
+        CodeLens = 2;
     }
 }
 
@@ -2346,6 +2372,7 @@ message MultiLspQuery {
         GetHover get_hover = 5;
         GetCodeActions get_code_actions = 6;
         GetSignatureHelp get_signature_help = 7;
+        GetCodeLens get_code_lens = 8;
     }
 }
 
@@ -2365,6 +2392,7 @@ message LspResponse {
         GetHoverResponse get_hover_response = 1;
         GetCodeActionsResponse get_code_actions_response = 2;
         GetSignatureHelpResponse get_signature_help_response = 3;
+        GetCodeLensResponse get_code_lens_response = 4;
     }
 }
 

crates/proto/src/proto.rs

@@ -340,6 +340,9 @@ messages!(
     (ResolveCompletionDocumentationResponse, Background),
     (ResolveInlayHint, Background),
     (ResolveInlayHintResponse, Background),
+    (RefreshCodeLens, Background),
+    (GetCodeLens, Background),
+    (GetCodeLensResponse, Background),
     (RespondToChannelInvite, Foreground),
     (RespondToContactRequest, Foreground),
     (RoomUpdated, Foreground),
@@ -513,6 +516,7 @@ request_messages!(
     (GetUsers, UsersResponse),
     (IncomingCall, Ack),
     (InlayHints, InlayHintsResponse),
+    (GetCodeLens, GetCodeLensResponse),
     (InviteChannelMember, Ack),
     (JoinChannel, JoinRoomResponse),
     (JoinChannelBuffer, JoinChannelBufferResponse),
@@ -534,6 +538,7 @@ request_messages!(
     (PrepareRename, PrepareRenameResponse),
     (CountLanguageModelTokens, CountLanguageModelTokensResponse),
     (RefreshInlayHints, Ack),
+    (RefreshCodeLens, Ack),
     (RejoinChannelBuffers, RejoinChannelBuffersResponse),
     (RejoinRoom, RejoinRoomResponse),
     (ReloadBuffers, ReloadBuffersResponse),
@@ -632,6 +637,7 @@ entity_messages!(
     ApplyCodeActionKind,
     FormatBuffers,
     GetCodeActions,
+    GetCodeLens,
     GetCompletions,
     GetDefinition,
     GetDeclaration,
@@ -659,6 +665,7 @@ entity_messages!(
     PerformRename,
     PrepareRename,
     RefreshInlayHints,
+    RefreshCodeLens,
     ReloadBuffers,
     RemoveProjectCollaborator,
     RenameProjectEntry,