feat(lsp): support API for config file (#14139)

Closes: #13910

3 files changed, 16 insertions, 27 deletions

diff --git a/cli/lsp/capabilities.rs b/cli/lsp/capabilities.rs
index 49adc961d..ed371bab1 100644
--- a/cli/lsp/capabilities.rs
+++ b/cli/lsp/capabilities.rs
@@ -5,32 +5,8 @@
 ///! language server, which helps determine what messages are sent from the
 ///! client.
 ///!
-use lspower::lsp::CallHierarchyServerCapability;
-use lspower::lsp::ClientCapabilities;
-use lspower::lsp::CodeActionKind;
-use lspower::lsp::CodeActionOptions;
-use lspower::lsp::CodeActionProviderCapability;
-use lspower::lsp::CodeLensOptions;
-use lspower::lsp::CompletionOptions;
-use lspower::lsp::DocumentSymbolOptions;
-use lspower::lsp::FoldingRangeProviderCapability;
-use lspower::lsp::HoverProviderCapability;
-use lspower::lsp::ImplementationProviderCapability;
-use lspower::lsp::OneOf;
-use lspower::lsp::SaveOptions;
-use lspower::lsp::SelectionRangeProviderCapability;
-use lspower::lsp::SemanticTokensFullOptions;
-use lspower::lsp::SemanticTokensOptions;
-use lspower::lsp::SemanticTokensServerCapabilities;
-use lspower::lsp::ServerCapabilities;
-use lspower::lsp::SignatureHelpOptions;
-use lspower::lsp::TextDocumentSyncCapability;
-use lspower::lsp::TextDocumentSyncKind;
-use lspower::lsp::TextDocumentSyncOptions;
-use lspower::lsp::TypeDefinitionProviderCapability;
-use lspower::lsp::WorkDoneProgressOptions;
-use lspower::lsp::WorkspaceFoldersServerCapabilities;
-use lspower::lsp::WorkspaceServerCapabilities;
+use deno_core::serde_json::json;
+use lspower::lsp::*;
 
 use super::refactor::ALL_KNOWN_REFACTOR_ACTION_KINDS;
 use super::semantic_tokens::get_legend;
@@ -158,8 +134,10 @@ pub fn server_capabilities(
       }),
       file_operations: None,
     }),
-    experimental: None,
     linked_editing_range_provider: None,
     moniker_provider: None,
+    experimental: Some(json!({
+      "denoConfigTasks": true,
+    })),
   }
 }
diff --git a/cli/lsp/language_server.rs b/cli/lsp/language_server.rs
index c2083bc48..1afcff8a6 100644
--- a/cli/lsp/language_server.rs
+++ b/cli/lsp/language_server.rs
@@ -2141,6 +2141,7 @@ impl Inner {
       lsp_custom::RELOAD_IMPORT_REGISTRIES_REQUEST => {
         self.reload_import_registries().await
       }
+      lsp_custom::TASK_REQUEST => self.get_tasks(),
       lsp_custom::VIRTUAL_TEXT_DOCUMENT => {
         match params.map(serde_json::from_value) {
           Some(Ok(params)) => Ok(Some(
@@ -2831,6 +2832,15 @@ impl Inner {
     json!({ "averages": averages })
   }
 
+  fn get_tasks(&self) -> LspResult<Option<Value>> {
+    Ok(
+      self
+        .maybe_config_file
+        .as_ref()
+        .and_then(|cf| cf.to_lsp_tasks()),
+    )
+  }
+
   async fn reload_import_registries(&mut self) -> LspResult<Option<Value>> {
     fs_util::remove_dir_all_if_exists(&self.module_registries_location)
       .await
diff --git a/cli/lsp/lsp_custom.rs b/cli/lsp/lsp_custom.rs
index 1d8c20984..eff55e2ea 100644
--- a/cli/lsp/lsp_custom.rs
+++ b/cli/lsp/lsp_custom.rs
@@ -6,6 +6,7 @@ use lspower::lsp;
 
 pub const CACHE_REQUEST: &str = "deno/cache";
 pub const PERFORMANCE_REQUEST: &str = "deno/performance";
+pub const TASK_REQUEST: &str = "deno/task";
 pub const RELOAD_IMPORT_REGISTRIES_REQUEST: &str =
   "deno/reloadImportRegistries";
 pub const VIRTUAL_TEXT_DOCUMENT: &str = "deno/virtualTextDocument";