refactor(language_server): add capabilities struct (#7906)

vscode test from local, 
intellij test from
#7445 (comment)

crates/oxc_language_server/src/capabilities.rs

@@ -0,0 +1,132 @@
+use tower_lsp::lsp_types::{
+    ClientCapabilities, CodeActionKind, CodeActionOptions, CodeActionProviderCapability, OneOf,
+    ServerCapabilities, TextDocumentSyncCapability, TextDocumentSyncKind, WorkDoneProgressOptions,
+    WorkspaceFoldersServerCapabilities, WorkspaceServerCapabilities,
+};
+
+pub const CODE_ACTION_KIND_SOURCE_FIX_ALL_OXC: CodeActionKind =
+    CodeActionKind::new("source.fixAll.oxc");
+
+pub struct Capabilities {
+    pub code_action_provider: bool,
+}
+
+impl From<ClientCapabilities> for Capabilities {
+    fn from(value: ClientCapabilities) -> Self {
+        // check if the client support some code action literal support
+        let code_action_provider = value.text_document.is_some_and(|capability| {
+            capability.code_action.is_some_and(|code_action| {
+                code_action.code_action_literal_support.is_some_and(|literal_support| {
+                    !literal_support.code_action_kind.value_set.is_empty()
+                })
+            })
+        });
+
+        Self { code_action_provider }
+    }
+}
+
+impl From<Capabilities> for ServerCapabilities {
+    fn from(value: Capabilities) -> Self {
+        Self {
+            text_document_sync: Some(TextDocumentSyncCapability::Kind(TextDocumentSyncKind::FULL)),
+            workspace: Some(WorkspaceServerCapabilities {
+                workspace_folders: Some(WorkspaceFoldersServerCapabilities {
+                    supported: Some(true),
+                    change_notifications: Some(OneOf::Left(true)),
+                }),
+                file_operations: None,
+            }),
+            code_action_provider: if value.code_action_provider {
+                Some(CodeActionProviderCapability::Options(CodeActionOptions {
+                    code_action_kinds: Some(vec![
+                        CodeActionKind::QUICKFIX,
+                        CODE_ACTION_KIND_SOURCE_FIX_ALL_OXC,
+                    ]),
+                    work_done_progress_options: WorkDoneProgressOptions {
+                        work_done_progress: None,
+                    },
+                    resolve_provider: None,
+                }))
+            } else {
+                None
+            },
+            ..ServerCapabilities::default()
+        }
+    }
+}
+
+#[cfg(test)]
+mod test {
+    use tower_lsp::lsp_types::{
+        ClientCapabilities, CodeActionClientCapabilities, CodeActionKindLiteralSupport,
+        CodeActionLiteralSupport, TextDocumentClientCapabilities,
+    };
+
+    use super::Capabilities;
+
+    #[test]
+    fn test_code_action_provider_vscode() {
+        let client_capabilities = ClientCapabilities {
+            text_document: Some(TextDocumentClientCapabilities {
+                code_action: Some(CodeActionClientCapabilities {
+                    code_action_literal_support: Some(CodeActionLiteralSupport {
+                        code_action_kind: CodeActionKindLiteralSupport {
+                            // this is from build (see help, about):
+                            // Version: 1.95.3 (user setup)
+                            // Commit: f1a4fb101478ce6ec82fe9627c43efbf9e98c813
+                            value_set: vec![
+                                #[allow(clippy::manual_string_new)]
+                                "".into(),
+                                "quickfix".into(),
+                                "refactor".into(),
+                                "refactor.extract".into(),
+                                "refactor.inline".into(),
+                                "refactor.rewrite".into(),
+                                "source".into(),
+                                "source.organizeImports".into(),
+                            ],
+                        },
+                    }),
+                    ..CodeActionClientCapabilities::default()
+                }),
+                ..TextDocumentClientCapabilities::default()
+            }),
+            ..ClientCapabilities::default()
+        };
+
+        let capabilities = Capabilities::from(client_capabilities);
+
+        assert!(capabilities.code_action_provider);
+    }
+
+    #[test]
+    fn test_code_action_provider_intellij() {
+        let client_capabilities = ClientCapabilities {
+            text_document: Some(TextDocumentClientCapabilities {
+                code_action: Some(CodeActionClientCapabilities {
+                    code_action_literal_support: Some(CodeActionLiteralSupport {
+                        code_action_kind: CodeActionKindLiteralSupport {
+                            // this is from build (see help, about):
+                            // Build #IU-243.22562.145, built on December 8, 2024
+                            value_set: vec![
+                                "quickfix".into(),
+                                #[allow(clippy::manual_string_new)]
+                                "".into(),
+                                "source".into(),
+                                "refactor".into(),
+                            ],
+                        },
+                    }),
+                    ..CodeActionClientCapabilities::default()
+                }),
+                ..TextDocumentClientCapabilities::default()
+            }),
+            ..ClientCapabilities::default()
+        };
+
+        let capabilities = Capabilities::from(client_capabilities);
+
+        assert!(capabilities.code_action_provider);
+    }
+}

crates/oxc_language_server/src/main.rs

@@ -11,22 +11,21 @@ use tokio::sync::{Mutex, OnceCell, RwLock, SetError};
 use tower_lsp::{
     jsonrpc::{Error, ErrorCode, Result},
     lsp_types::{
-        CodeAction, CodeActionKind, CodeActionOptions, CodeActionOrCommand, CodeActionParams,
-        CodeActionProviderCapability, CodeActionResponse, ConfigurationItem, Diagnostic,
-        DidChangeConfigurationParams, DidChangeTextDocumentParams, DidChangeWatchedFilesParams,
-        DidCloseTextDocumentParams, DidOpenTextDocumentParams, DidSaveTextDocumentParams,
-        InitializeParams, InitializeResult, InitializedParams, NumberOrString, OneOf, Position,
-        Range, ServerCapabilities, ServerInfo, TextDocumentSyncCapability, TextDocumentSyncKind,
-        TextEdit, Url, WorkDoneProgressOptions, WorkspaceEdit, WorkspaceFoldersServerCapabilities,
-        WorkspaceServerCapabilities,
+        CodeAction, CodeActionKind, CodeActionOrCommand, CodeActionParams, CodeActionResponse,
+        ConfigurationItem, Diagnostic, DidChangeConfigurationParams, DidChangeTextDocumentParams,
+        DidChangeWatchedFilesParams, DidCloseTextDocumentParams, DidOpenTextDocumentParams,
+        DidSaveTextDocumentParams, InitializeParams, InitializeResult, InitializedParams,
+        NumberOrString, Position, Range, ServerInfo, TextEdit, Url, WorkspaceEdit,
     },
     Client, LanguageServer, LspService, Server,
 };
 
 use oxc_linter::{FixKind, LinterBuilder, Oxlintrc};
 
+use crate::capabilities::{Capabilities, CODE_ACTION_KIND_SOURCE_FIX_ALL_OXC};
 use crate::linter::{DiagnosticReport, ServerLinter};
 
+mod capabilities;
 mod linter;
 
 type FxDashMap<K, V> = DashMap<K, V, FxBuildHasher>;
@@ -88,9 +87,6 @@ enum SyntheticRunLevel {
     OnType,
 }
 
-const CODE_ACTION_KIND_SOURCE_FIX_ALL_OXC: CodeActionKind =
-    CodeActionKind::new("source.fixAll.oxc");
-
 #[tower_lsp::async_trait]
 impl LanguageServer for Backend {
     async fn initialize(&self, params: InitializeParams) -> Result<InitializeResult> {
@@ -106,45 +102,12 @@ impl LanguageServer for Backend {
             *self.options.lock().await = value;
         }
 
-        // check if the client support some code action literal support
-        let code_action_provider = if params.capabilities.text_document.is_some_and(|capability| {
-            capability.code_action.is_some_and(|code_action| {
-                code_action.code_action_literal_support.is_some_and(|literal_support| {
-                    !literal_support.code_action_kind.value_set.is_empty()
-                })
-            })
-        }) {
-            Some(CodeActionProviderCapability::Options(CodeActionOptions {
-                code_action_kinds: Some(vec![
-                    CodeActionKind::QUICKFIX,
-                    CODE_ACTION_KIND_SOURCE_FIX_ALL_OXC,
-                ]),
-                work_done_progress_options: WorkDoneProgressOptions { work_done_progress: None },
-                resolve_provider: None,
-            }))
-        } else {
-            None
-        };
-
         let oxlintrc = self.init_linter_config().await;
         self.init_ignore_glob(oxlintrc).await;
         Ok(InitializeResult {
             server_info: Some(ServerInfo { name: "oxc".into(), version: None }),
             offset_encoding: None,
-            capabilities: ServerCapabilities {
-                text_document_sync: Some(TextDocumentSyncCapability::Kind(
-                    TextDocumentSyncKind::FULL,
-                )),
-                workspace: Some(WorkspaceServerCapabilities {
-                    workspace_folders: Some(WorkspaceFoldersServerCapabilities {
-                        supported: Some(true),
-                        change_notifications: Some(OneOf::Left(true)),
-                    }),
-                    file_operations: None,
-                }),
-                code_action_provider,
-                ..ServerCapabilities::default()
-            },
+            capabilities: Capabilities::from(params.capabilities).into(),
         })
     }