Revert "Revert "Support LSP 3.15""

This reverts commit 1e0bf205eff81f04c0e1e6c208c3489327520c3f.

3 files changed, 12 insertions, 3 deletions

diff --git a/crates/ra_lsp_server/src/caps.rs b/crates/ra_lsp_server/src/caps.rs
index eea0965ed..4cb259360 100644
--- a/crates/ra_lsp_server/src/caps.rs
+++ b/crates/ra_lsp_server/src/caps.rs
@@ -5,7 +5,7 @@ use lsp_types::{
     DocumentOnTypeFormattingOptions, FoldingRangeProviderCapability, GenericCapability,
     ImplementationProviderCapability, RenameOptions, RenameProviderCapability, ServerCapabilities,
     SignatureHelpOptions, TextDocumentSyncCapability, TextDocumentSyncKind,
-    TextDocumentSyncOptions, TypeDefinitionProviderCapability,
+    TextDocumentSyncOptions, TypeDefinitionProviderCapability, WorkDoneProgressOptions,
 };
 
 pub fn server_capabilities() -> ServerCapabilities {
@@ -21,10 +21,14 @@ pub fn server_capabilities() -> ServerCapabilities {
         completion_provider: Some(CompletionOptions {
             resolve_provider: None,
             trigger_characters: Some(vec![":".to_string(), ".".to_string()]),
+            work_done_progress_options: WorkDoneProgressOptions { work_done_progress: None },
         }),
         signature_help_provider: Some(SignatureHelpOptions {
             trigger_characters: Some(vec!["(".to_string(), ",".to_string(), ")".to_string()]),
+            retrigger_characters: None,
+            work_done_progress_options: WorkDoneProgressOptions { work_done_progress: None },
         }),
+        declaration_provider: None,
         definition_provider: Some(true),
         type_definition_provider: Some(TypeDefinitionProviderCapability::Simple(true)),
         implementation_provider: Some(ImplementationProviderCapability::Simple(true)),
@@ -44,6 +48,7 @@ pub fn server_capabilities() -> ServerCapabilities {
         folding_range_provider: Some(FoldingRangeProviderCapability::Simple(true)),
         rename_provider: Some(RenameProviderCapability::Options(RenameOptions {
             prepare_provider: Some(true),
+            work_done_progress_options: WorkDoneProgressOptions { work_done_progress: None },
         })),
         document_link_provider: None,
         color_provider: None,
diff --git a/crates/ra_lsp_server/src/main_loop.rs b/crates/ra_lsp_server/src/main_loop.rs
index 83845f1e0..158cac0be 100644
--- a/crates/ra_lsp_server/src/main_loop.rs
+++ b/crates/ra_lsp_server/src/main_loop.rs
@@ -520,7 +520,8 @@ fn on_notification(
             if let Some(file_id) = state.vfs.write().remove_file_overlay(path.as_path()) {
                 subs.remove_sub(FileId(file_id.0));
             }
-            let params = req::PublishDiagnosticsParams { uri, diagnostics: Vec::new() };
+            let params =
+                req::PublishDiagnosticsParams { uri, diagnostics: Vec::new(), version: None };
             let not = notification_new::<req::PublishDiagnostics>(params);
             msg_sender.send(not.into()).unwrap();
             return Ok(());
diff --git a/crates/ra_lsp_server/src/main_loop/handlers.rs b/crates/ra_lsp_server/src/main_loop/handlers.rs
index 409583634..5b64b27cd 100644
--- a/crates/ra_lsp_server/src/main_loop/handlers.rs
+++ b/crates/ra_lsp_server/src/main_loop/handlers.rs
@@ -648,6 +648,7 @@ pub fn handle_code_action(
             diagnostics: None,
             edit: None,
             command: Some(command),
+            is_preferred: None,
         };
         res.push(action.into());
     }
@@ -670,6 +671,7 @@ pub fn handle_code_action(
             diagnostics: None,
             edit: None,
             command: Some(command),
+            is_preferred: None,
         };
         res.push(action.into());
     }
@@ -828,9 +830,10 @@ pub fn publish_diagnostics(
             source: Some("rust-analyzer".to_string()),
             message: d.message,
             related_information: None,
+            tags: None,
         })
         .collect();
-    Ok(req::PublishDiagnosticsParams { uri, diagnostics })
+    Ok(req::PublishDiagnosticsParams { uri, diagnostics, version: None })
 }
 
 pub fn publish_decorations(