feat: add mvp language server (#8515)

Resolves #8400

1 files changed, 59 insertions, 0 deletions

diff --git a/cli/lsp/capabilities.rs b/cli/lsp/capabilities.rs
new file mode 100644
index 000000000..cf8f150ca
--- /dev/null
+++ b/cli/lsp/capabilities.rs
@@ -0,0 +1,59 @@
+// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
+
+///!
+///! Provides information about what capabilities that are supported by the
+///! language server, which helps determine what messages are sent from the
+///! client.
+///!
+use lsp_types::ClientCapabilities;
+use lsp_types::HoverProviderCapability;
+use lsp_types::OneOf;
+use lsp_types::SaveOptions;
+use lsp_types::ServerCapabilities;
+use lsp_types::TextDocumentSyncCapability;
+use lsp_types::TextDocumentSyncKind;
+use lsp_types::TextDocumentSyncOptions;
+
+pub fn server_capabilities(
+  _client_capabilities: &ClientCapabilities,
+) -> ServerCapabilities {
+  ServerCapabilities {
+    text_document_sync: Some(TextDocumentSyncCapability::Options(
+      TextDocumentSyncOptions {
+        open_close: Some(true),
+        change: Some(TextDocumentSyncKind::Incremental),
+        will_save: None,
+        will_save_wait_until: None,
+        save: Some(SaveOptions::default().into()),
+      },
+    )),
+    hover_provider: Some(HoverProviderCapability::Simple(true)),
+    completion_provider: None,
+    signature_help_provider: None,
+    declaration_provider: None,
+    definition_provider: Some(OneOf::Left(true)),
+    type_definition_provider: None,
+    implementation_provider: None,
+    references_provider: Some(OneOf::Left(true)),
+    document_highlight_provider: Some(OneOf::Left(true)),
+    document_symbol_provider: None,
+    workspace_symbol_provider: None,
+    code_action_provider: None,
+    code_lens_provider: None,
+    document_formatting_provider: Some(OneOf::Left(true)),
+    document_range_formatting_provider: None,
+    document_on_type_formatting_provider: None,
+    selection_range_provider: None,
+    semantic_highlighting: None,
+    folding_range_provider: None,
+    rename_provider: None,
+    document_link_provider: None,
+    color_provider: None,
+    execute_command_provider: None,
+    workspace: None,
+    call_hierarchy_provider: None,
+    semantic_tokens_provider: None,
+    on_type_rename_provider: None,
+    experimental: None,
+  }
+}