feat(lsp): Implement textDocument/rename

cli/lsp/capabilities.rs

@@ -62,7 +62,7 @@ pub fn server_capabilities(
     document_on_type_formatting_provider: None,
     selection_range_provider: None,
     folding_range_provider: None,
-    rename_provider: None,
+    rename_provider: Some(OneOf::Left(true)),
     document_link_provider: None,
     color_provider: None,
     execute_command_provider: None,

cli/lsp/language_server.rs

@@ -802,6 +802,78 @@ impl lspower::LanguageServer for LanguageServer {
     }
   }
 
+  async fn rename(
+    &self,
+    params: RenameParams,
+  ) -> LSPResult<Option<WorkspaceEdit>> {
+    if !self.enabled() {
+      return Ok(None);
+    }
+
+    let snapshot = self.snapshot();
+    let specifier =
+      utils::normalize_url(params.text_document_position.text_document.uri);
+
+    let line_index =
+      self
+        .get_line_index(specifier.clone())
+        .await
+        .map_err(|err| {
+          error!("Failed to get line_index {:#?}", err);
+          LSPError::internal_error()
+        })?;
+
+    let req = tsc::RequestMethod::FindRenameLocations((
+      specifier,
+      text::to_char_pos(&line_index, params.text_document_position.position),
+      true,
+      true,
+      false,
+    ));
+
+    let res = self
+      .ts_server
+      .request(snapshot.clone(), req)
+      .await
+      .map_err(|err| {
+        error!("Failed to request to tsserver {:#?}", err);
+        LSPError::invalid_request()
+      })?;
+
+    let maybe_locations = serde_json::from_value::<
+      Option<Vec<tsc::RenameLocation>>,
+    >(res)
+    .map_err(|err| {
+      error!(
+        "Failed to deserialize tsserver response to Vec<RenameLocation> {:#?}",
+        err
+      );
+      LSPError::internal_error()
+    })?;
+
+    match maybe_locations {
+      Some(locations) => {
+        let rename_locations = tsc::RenameLocations { locations };
+        let workpace_edits = rename_locations
+          .into_workspace_edit(
+            snapshot,
+            |s| self.get_line_index(s),
+            &params.new_name,
+          )
+          .await
+          .map_err(|err| {
+            error!(
+              "Failed to convert tsc::RenameLocations to WorkspaceEdit {:#?}",
+              err
+            );
+            LSPError::internal_error()
+          })?;
+        Ok(Some(workpace_edits))
+      }
+      None => Ok(None),
+    }
+  }
+
   async fn request_else(
     &self,
     method: &str,
@@ -1143,4 +1215,57 @@ mod tests {
     ]);
     harness.run().await;
   }
+  #[tokio::test]
+  async fn test_rename() {
+    let mut harness = LspTestHarness::new(vec![
+      ("initialize_request.json", LspResponse::RequestAny),
+      ("initialized_notification.json", LspResponse::None),
+      ("rename_did_open_notification.json", LspResponse::None),
+      (
+        "rename_request.json",
+        LspResponse::Request(
+          2,
+          json!({
+            "documentChanges": [{
+              "textDocument": {
+                "uri": "file:///a/file.ts",
+                "version": 1,
+              },
+              "edits": [{
+                "range": {
+                  "start": {
+                    "line": 0,
+                    "character": 4
+                  },
+                  "end": {
+                    "line": 0,
+                    "character": 12
+                  }
+                },
+                "newText": "variable_modified"
+              }, {
+                "range": {
+                  "start": {
+                    "line": 1,
+                    "character": 12
+                  },
+                  "end": {
+                    "line": 1,
+                    "character": 20
+                  }
+                },
+                "newText": "variable_modified"
+              }]
+            }]
+          }),
+        ),
+      ),
+      (
+        "shutdown_request.json",
+        LspResponse::Request(3, json!(null)),
+      ),
+      ("exit_notification.json", LspResponse::None),
+    ]);
+    harness.run().await;
+  }
 }

cli/lsp/tsc.rs

@@ -22,6 +22,7 @@ use deno_core::serde::Serialize;
 use deno_core::serde_json;
 use deno_core::serde_json::json;
 use deno_core::serde_json::Value;
+use deno_core::url::Url;
 use deno_core::JsRuntime;
 use deno_core::ModuleSpecifier;
 use deno_core::OpFn;
@@ -411,6 +412,85 @@ impl QuickInfo {
   }
 }
 
+#[derive(Debug, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct RenameLocation {
+  // inherit from DocumentSpan
+  text_span: TextSpan,
+  file_name: String,
+  original_text_span: Option<TextSpan>,
+  original_file_name: Option<String>,
+  context_span: Option<TextSpan>,
+  original_context_span: Option<TextSpan>,
+  // RenameLocation props
+  prefix_text: Option<String>,
+  suffix_text: Option<String>,
+}
+
+pub struct RenameLocations {
+  pub locations: Vec<RenameLocation>,
+}
+
+impl RenameLocations {
+  pub async fn into_workspace_edit<F, Fut>(
+    self,
+    snapshot: StateSnapshot,
+    index_provider: F,
+    new_name: &str,
+  ) -> Result<lsp_types::WorkspaceEdit, AnyError>
+  where
+    F: Fn(ModuleSpecifier) -> Fut,
+    Fut: Future<Output = Result<Vec<u32>, AnyError>>,
+  {
+    let mut text_document_edit_map: HashMap<Url, lsp_types::TextDocumentEdit> =
+      HashMap::new();
+    for location in self.locations.iter() {
+      let uri = utils::normalize_file_name(&location.file_name)?;
+      let specifier = ModuleSpecifier::resolve_url(&location.file_name)?;
+
+      // ensure TextDocumentEdit for `location.file_name`.
+      if text_document_edit_map.get(&uri).is_none() {
+        text_document_edit_map.insert(
+          uri.clone(),
+          lsp_types::TextDocumentEdit {
+            text_document: lsp_types::OptionalVersionedTextDocumentIdentifier {
+              uri: uri.clone(),
+              version: snapshot
+                .doc_data
+                .get(&specifier)
+                .map_or_else(|| None, |data| data.version),
+            },
+            edits: Vec::<
+              lsp_types::OneOf<
+                lsp_types::TextEdit,
+                lsp_types::AnnotatedTextEdit,
+              >,
+            >::new(),
+          },
+        );
+      }
+
+      // push TextEdit for ensured `TextDocumentEdit.edits`.
+      let document_edit = text_document_edit_map.get_mut(&uri).unwrap();
+      document_edit
+        .edits
+        .push(lsp_types::OneOf::Left(lsp_types::TextEdit {
+          range: location
+            .text_span
+            .to_range(&index_provider(specifier.clone()).await?),
+          new_text: new_name.to_string(),
+        }));
+    }
+
+    Ok(lsp_types::WorkspaceEdit {
+      changes: None,
+      document_changes: Some(lsp_types::DocumentChanges::Edits(
+        text_document_edit_map.values().cloned().collect(),
+      )),
+    })
+  }
+}
+
 #[derive(Debug, Deserialize)]
 pub enum HighlightSpanKind {
   #[serde(rename = "none")]
@@ -1059,6 +1139,8 @@ pub enum RequestMethod {
   GetDefinition((ModuleSpecifier, u32)),
   /// Get completion information at a given position (IntelliSense).
   GetCompletions((ModuleSpecifier, u32, UserPreferences)),
+  /// Get rename locations at a given position.
+  FindRenameLocations((ModuleSpecifier, u32, bool, bool, bool)),
 }
 
 impl RequestMethod {
@@ -1127,6 +1209,23 @@ impl RequestMethod {
           "preferences": preferences,
         })
       }
+      RequestMethod::FindRenameLocations((
+        specifier,
+        position,
+        find_in_strings,
+        find_in_comments,
+        provide_prefix_and_suffix_text_for_rename,
+      )) => {
+        json!({
+          "id": id,
+          "method": "findRenameLocations",
+          "specifier": specifier,
+          "position": position,
+          "findInStrings": find_in_strings,
+          "findInComments": find_in_comments,
+          "providePrefixAndSuffixTextForRename": provide_prefix_and_suffix_text_for_rename
+        })
+      }
     }
   }
 }

cli/tests/lsp/rename_did_open_notification.json

@@ -0,0 +1,12 @@
+{
+  "jsonrpc": "2.0",
+  "method": "textDocument/didOpen",
+  "params": {
+    "textDocument": {
+      "uri": "file:///a/file.ts",
+      "languageId": "typescript",
+      "version": 1,
+      "text": "let variable = 'a';\nconsole.log(variable);"
+    }
+  }
+}

cli/tests/lsp/rename_request.json

@@ -0,0 +1,15 @@
+{
+  "jsonrpc": "2.0",
+  "id": 2,
+  "method": "textDocument/rename",
+  "params": {
+    "textDocument": {
+      "uri": "file:///a/file.ts"
+    },
+    "position": {
+      "line": 5,
+      "character": 19
+    },
+    "newName": "variable_modified"
+  }
+}

cli/tsc/99_main_compiler.js

@@ -562,6 +562,18 @@ delete Object.prototype.__proto__;
           ),
         );
       }
+      case "findRenameLocations": {
+        return respond(
+          id,
+          languageService.findRenameLocations(
+            request.specifier,
+            request.position,
+            request.findInStrings,
+            request.findInComments,
+            request.providePrefixAndSuffixTextForRename,
+          ),
+        );
+      }
       default:
         throw new TypeError(
           // @ts-ignore exhausted case statement sets type to never

cli/tsc/compiler.d.ts

@@ -50,7 +50,8 @@ declare global {
     | GetDocumentHighlightsRequest
     | GetReferencesRequest
     | GetDefinitionRequest
-    | GetCompletionsRequest;
+    | GetCompletionsRequest
+    | FindRenameLocationsRequest;
 
   interface BaseLanguageServerRequest {
     id: number;
@@ -114,4 +115,13 @@ declare global {
     position: number;
     preferences: ts.UserPreferences;
   }
+
+  interface FindRenameLocationsRequest extends BaseLanguageServerRequest {
+    method: "findRenameLocations";
+    specifier: string;
+    position: number;
+    findInStrings: boolean;
+    findInComments: boolean;
+    providePrefixAndSuffixTextForRename: boolean;
+  }
 }