LibJS: Remove {Bytecode::,}Interpreter::global_object()

The basic idea is that a global object cannot just come out of nowhere,
it must be associated to a realm - so get it from there, if needed.

This is to enforce the changes from all the previous commits by not
handing out global objects unless you actually have an initialized
realm (either stored somewhere, or the VM's current realm).

Tests/LibJS/test-bytecode-js.cpp

@@ -20,7 +20,7 @@
                                                                                     \
     auto script = script_or_error.release_value();                                  \
     auto const& program = script->parse_node();                                     \
-    JS::Bytecode::Interpreter bytecode_interpreter(ast_interpreter->global_object(), ast_interpreter->realm());
+    JS::Bytecode::Interpreter bytecode_interpreter(ast_interpreter->realm());
 
 #define EXPECT_NO_EXCEPTION(executable)                                 \
     auto executable = MUST(JS::Bytecode::Generator::generate(program)); \

Userland/Applications/Spreadsheet/Spreadsheet.cpp

@@ -43,7 +43,7 @@ Sheet::Sheet(Workbook& workbook)
     , m_interpreter(JS::Interpreter::create<SheetGlobalObject>(m_workbook.vm(), *this))
 {
     JS::DeferGC defer_gc(m_workbook.vm().heap());
-    m_global_object = static_cast<SheetGlobalObject*>(&m_interpreter->global_object());
+    m_global_object = static_cast<SheetGlobalObject*>(&m_interpreter->realm().global_object());
     global_object().define_direct_property("workbook", m_workbook.workbook_object(), JS::default_attributes);
     global_object().define_direct_property("thisSheet", &global_object(), JS::default_attributes); // Self-reference is unfortunate, but required.
 

Userland/Applications/Spreadsheet/Workbook.cpp

@@ -30,10 +30,10 @@ Workbook::Workbook(NonnullRefPtrVector<Sheet>&& sheets, GUI::Window& parent_wind
     , m_parent_window(parent_window)
 {
     m_workbook_object = m_vm->heap().allocate<WorkbookObject>(m_interpreter->realm(), m_interpreter->realm(), *this);
-    m_interpreter->global_object().define_direct_property("workbook", workbook_object(), JS::default_attributes);
+    m_interpreter->realm().global_object().define_direct_property("workbook", workbook_object(), JS::default_attributes);
 
     m_main_execution_context.current_node = nullptr;
-    m_main_execution_context.this_value = &m_interpreter->global_object();
+    m_main_execution_context.this_value = &m_interpreter->realm().global_object();
     m_main_execution_context.function_name = "(global execution context)"sv;
     m_main_execution_context.lexical_environment = &m_interpreter->realm().global_environment();
     m_main_execution_context.variable_environment = &m_interpreter->realm().global_environment();

Userland/Libraries/LibJS/Bytecode/Interpreter.cpp

@@ -25,9 +25,8 @@ Interpreter* Interpreter::current()
     return s_current;
 }
 
-Interpreter::Interpreter(GlobalObject& global_object, Realm& realm)
-    : m_vm(global_object.vm())
-    , m_global_object(global_object)
+Interpreter::Interpreter(Realm& realm)
+    : m_vm(realm.vm())
     , m_realm(realm)
 {
     VERIFY(!s_current);
@@ -51,7 +50,7 @@ Interpreter::ValueAndFrame Interpreter::run_and_return_frame(Executable const& e
     ExecutionContext execution_context(vm().heap());
     if (vm().execution_context_stack().is_empty() || !vm().running_execution_context().lexical_environment) {
         // The "normal" interpreter pushes an execution context without environment so in that case we also want to push one.
-        execution_context.this_value = &global_object();
+        execution_context.this_value = &m_realm.global_object();
         static FlyString global_execution_context_name = "(*BC* global execution context)";
         execution_context.function_name = global_execution_context_name;
         execution_context.lexical_environment = &m_realm.global_environment();
@@ -69,7 +68,7 @@ Interpreter::ValueAndFrame Interpreter::run_and_return_frame(Executable const& e
         m_register_windows.append(make<RegisterWindow>(MarkedVector<Value>(vm().heap()), MarkedVector<Environment*>(vm().heap()), MarkedVector<Environment*>(vm().heap())));
 
     registers().resize(executable.number_of_registers);
-    registers()[Register::global_object_index] = Value(&global_object());
+    registers()[Register::global_object_index] = Value(&m_realm.global_object());
 
     for (;;) {
         Bytecode::InstructionStreamIterator pc(block->instruction_stream());

Userland/Libraries/LibJS/Bytecode/Interpreter.h

@@ -26,13 +26,12 @@ struct RegisterWindow {
 
 class Interpreter {
 public:
-    Interpreter(GlobalObject&, Realm&);
+    explicit Interpreter(Realm&);
     ~Interpreter();
 
     // FIXME: Remove this thing once we don't need it anymore!
     static Interpreter* current();
 
-    GlobalObject& global_object() { return m_global_object; }
     Realm& realm() { return m_realm; }
     VM& vm() { return m_vm; }
 
@@ -90,7 +89,6 @@ private:
     static AK::Array<OwnPtr<PassManager>, static_cast<UnderlyingType<Interpreter::OptimizationLevel>>(Interpreter::OptimizationLevel::__Count)> s_optimization_pipelines;
 
     VM& m_vm;
-    GlobalObject& m_global_object;
     Realm& m_realm;
     Vector<Variant<NonnullOwnPtr<RegisterWindow>, RegisterWindow*>> m_register_windows;
     Optional<BasicBlock const*> m_pending_jump;

Userland/Libraries/LibJS/Interpreter.cpp

@@ -25,7 +25,6 @@ NonnullOwnPtr<Interpreter> Interpreter::create_with_existing_realm(Realm& realm)
     auto& vm = realm.vm();
     DeferGC defer_gc(vm.heap());
     auto interpreter = adopt_own(*new Interpreter(vm));
-    interpreter->m_global_object = make_handle(&realm.global_object());
     interpreter->m_realm = make_handle(&realm);
     return interpreter;
 }
@@ -140,16 +139,6 @@ ThrowCompletionOr<Value> Interpreter::run(SourceTextModule& module)
     return js_undefined();
 }
 
-GlobalObject& Interpreter::global_object()
-{
-    return static_cast<GlobalObject&>(*m_global_object.cell());
-}
-
-GlobalObject const& Interpreter::global_object() const
-{
-    return static_cast<GlobalObject const&>(*m_global_object.cell());
-}
-
 Realm& Interpreter::realm()
 {
     return static_cast<Realm&>(*m_realm.cell());

Userland/Libraries/LibJS/Interpreter.h

@@ -43,15 +43,13 @@ public:
         auto interpreter = adopt_own(*new Interpreter(vm));
         VM::InterpreterExecutionScope scope(*interpreter);
 
-        GlobalObject* global_object { nullptr };
         Realm* realm { nullptr };
 
         interpreter->m_global_execution_context = MUST(Realm::initialize_host_defined_realm(
             vm,
             [&](Realm& realm_) -> GlobalObject* {
-                global_object = interpreter->heap().allocate_without_realm<GlobalObjectType>(realm_, forward<Args>(args)...);
                 realm = &realm_;
-                return global_object;
+                return interpreter->heap().allocate_without_realm<GlobalObjectType>(realm_, forward<Args>(args)...);
             },
             nullptr));
 
@@ -59,7 +57,6 @@ public:
         static FlyString global_execution_context_name = "(global execution context)";
         interpreter->m_global_execution_context->function_name = global_execution_context_name;
 
-        interpreter->m_global_object = make_handle(global_object);
         interpreter->m_realm = make_handle(realm);
 
         return interpreter;
@@ -72,9 +69,6 @@ public:
     ThrowCompletionOr<Value> run(Script&);
     ThrowCompletionOr<Value> run(SourceTextModule&);
 
-    GlobalObject& global_object();
-    GlobalObject const& global_object() const;
-
     Realm& realm();
     Realm const& realm() const;
 
@@ -104,8 +98,6 @@ private:
     ExecutingASTNodeChain* m_ast_node_chain { nullptr };
 
     NonnullRefPtr<VM> m_vm;
-
-    Handle<GlobalObject> m_global_object;
     Handle<Realm> m_realm;
 
     // This is here to keep the global execution context alive for the entire lifespan of the Interpreter.

Userland/Libraries/LibTest/JavaScriptTestRunner.h

@@ -365,7 +365,7 @@ inline JSFileResult TestRunner::run_file_test(String const& test_path)
         executable->name = test_path;
         if (JS::Bytecode::g_dump_bytecode)
             executable->dump();
-        JS::Bytecode::Interpreter bytecode_interpreter(interpreter->global_object(), interpreter->realm());
+        JS::Bytecode::Interpreter bytecode_interpreter(interpreter->realm());
         MUST(bytecode_interpreter.run(*executable));
     } else {
         g_vm->push_execution_context(global_execution_context);
@@ -383,7 +383,7 @@ inline JSFileResult TestRunner::run_file_test(String const& test_path)
             executable->name = test_path;
             if (JS::Bytecode::g_dump_bytecode)
                 executable->dump();
-            JS::Bytecode::Interpreter bytecode_interpreter(interpreter->realm().global_object(), interpreter->realm());
+            JS::Bytecode::Interpreter bytecode_interpreter(interpreter->realm());
             (void)bytecode_interpreter.run(*executable);
         }
     } else {

Userland/Services/WebContent/ConnectionFromClient.cpp

@@ -390,8 +390,8 @@ void ConnectionFromClient::initialize_js_console(Badge<PageHost>)
         return;
 
     m_interpreter = interpreter;
-    m_console_client = make<WebContentConsoleClient>(interpreter->global_object().console(), interpreter, *this);
-    interpreter->global_object().console().set_client(*m_console_client.ptr());
+    m_console_client = make<WebContentConsoleClient>(interpreter->realm().global_object().console(), interpreter, *this);
+    interpreter->realm().global_object().console().set_client(*m_console_client.ptr());
 }
 
 void ConnectionFromClient::js_console_input(String const& js_source)

Userland/Utilities/js.cpp

@@ -1170,7 +1170,7 @@ static bool parse_and_run(JS::Interpreter& interpreter, StringView source, Strin
                 executable->dump();
 
             if (s_run_bytecode) {
-                JS::Bytecode::Interpreter bytecode_interpreter(interpreter.realm().global_object(), interpreter.realm());
+                JS::Bytecode::Interpreter bytecode_interpreter(interpreter.realm());
                 auto result_or_error = bytecode_interpreter.run_and_return_frame(*executable, nullptr);
                 if (result_or_error.value.is_error())
                     result = result_or_error.value.release_error();