[lldb] Adapt swift-form to LookupInfo changes

Since LookupInfo's constructor was made private in d7fb086, adapt the
downstream code to use the new static function instead. Also, change the
closure passed to Language::ForEach, to return a bool instead of the
newer IterationAction.

Author: augusto2112

lldb/source/Core/Module.cpp

@@ -718,7 +718,7 @@ Module::LookupInfo::MakeLookupInfos(ConstString name,
       auto lang_type = lang->GetLanguageType();
       if (!llvm::is_contained(lang_types, lang_type))
         lang_types.push_back(lang_type);
-      return IterationAction::Continue;
+      return true;
     });
 
     if (lang_types.empty())

lldb/source/Plugins/LanguageRuntime/Swift/SwiftLanguageRuntimeNames.cpp

@@ -1539,10 +1539,10 @@ SwiftLanguageRuntime::GetGenericSignature(llvm::StringRef function_name,
 /// Returns true if a function called `symbol_name` exists in `module`.
 static bool SymbolExists(StringRef symbol_name, Module &module) {
   SymbolContextList sc_list;
-  Module::LookupInfo lookup_info(ConstString(symbol_name),
-                                 lldb::FunctionNameType::eFunctionNameTypeFull,
-                                 lldb::eLanguageTypeSwift);
-  module.FindFunctions(lookup_info, CompilerDeclContext(),
+  auto lookup_infos = Module::LookupInfo::MakeLookupInfos(
+      ConstString(symbol_name), lldb::FunctionNameType::eFunctionNameTypeFull,
+      lldb::eLanguageTypeSwift);
+  module.FindFunctions(lookup_infos, CompilerDeclContext(),
                        ModuleFunctionSearchOptions(), sc_list);
   return !sc_list.IsEmpty();
 }

lldb/source/Target/Language.cpp

@@ -625,10 +625,10 @@ GetParentFunctionsWhileClosure(const SymbolContext &sc,
 
     // Find the enclosing function, if it exists.
     SymbolContextList sc_list;
-    Module::LookupInfo lookup_info(
+    auto lookup_infos = Module::LookupInfo::MakeLookupInfos(
         ConstString(parent), lldb::FunctionNameType::eFunctionNameTypeFull,
         lldb::eLanguageTypeSwift);
-    sc.module_sp->FindFunctions(lookup_info, CompilerDeclContext(),
+    sc.module_sp->FindFunctions(lookup_infos, CompilerDeclContext(),
                                 ModuleFunctionSearchOptions(), sc_list);
     if (sc_list.GetSize() != 1 || sc_list[0].function == nullptr)
       break;