LanguageClient: set the capability for hierarchical symbols

Amends 696dedefa1

Change-Id: Id066ec6ea530b3bc50c4ca71dbfeb59d7520f7ac
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

src/libs/languageserverprotocol/clientcapabilities.h

@@ -149,6 +149,12 @@ public:
     { return optionalValue<SymbolKindCapabilities>(symbolKindKey); }
     void setSymbolKind(const SymbolKindCapabilities &symbolKind) { insert(symbolKindKey, symbolKind); }
     void clearSymbolKind() { remove(symbolKindKey); }
+
+    Utils::optional<bool> hierarchicalDocumentSymbolSupport() const
+    { return optionalValue<bool>(hierarchicalDocumentSymbolSupportKey); }
+    void setHierarchicalDocumentSymbolSupport(bool hierarchicalDocumentSymbolSupport)
+    { insert(hierarchicalDocumentSymbolSupportKey, hierarchicalDocumentSymbolSupport); }
+    void clearHierachicalDocumentSymbolSupport() { remove(hierarchicalDocumentSymbolSupportKey); }
 };
 
 class LANGUAGESERVERPROTOCOL_EXPORT TextDocumentClientCapabilities : public JsonObject

src/libs/languageserverprotocol/jsonkeys.h

@@ -116,6 +116,7 @@ constexpr char fullKey[] = "full";
 constexpr char greenKey[] = "green";
 constexpr char headerFieldSeparator[] = ": ";
 constexpr char headerSeparator[] = "\r\n";
+constexpr char hierarchicalDocumentSymbolSupportKey[] = "hierarchicalDocumentSymbolSupport";
 constexpr char hoverKey[] = "hover";
 constexpr char hoverProviderKey[] = "hoverProvider";
 constexpr char idKey[] = "id";

src/plugins/languageclient/client.cpp

@@ -192,6 +192,7 @@ static ClientCapabilities generateClientCapabilities()
          SymbolKind::EnumMember, SymbolKind::Struct,       SymbolKind::Event,
          SymbolKind::Operator,   SymbolKind::TypeParameter});
     symbolCapabilities.setSymbolKind(symbolKindCapabilities);
+    symbolCapabilities.setHierarchicalDocumentSymbolSupport(true);
     documentCapabilities.setDocumentSymbol(symbolCapabilities);
 
     TextDocumentClientCapabilities::SemanticHighlightingCapabilities semanticHighlight;