Everywhere: Hoist the Libraries folder to the top-level

Author: https://github.com/trflynn89 Commit: 93712b24bf Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2256 Reviewed-by: https://github.com/sideshowbarker
2025-07-29 12:19:54 +00:00 · 2024-11-09 12:25:08 -05:00 · 2024-11-09 12:25:08 -05:00 · 93712b24bf · 2024-11-10 11:51:52 +00:00
commit 93712b24bf
parent 950e819ee7
4547 changed files with 104 additions and 113 deletions
--- a/Libraries/LibJS/Runtime/FunctionEnvironment.cpp
+++ b/Libraries/LibJS/Runtime/FunctionEnvironment.cpp
@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 2021, Andreas Kling <andreas@ladybird.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibJS/Runtime/Completion.h>
+#include <LibJS/Runtime/ECMAScriptFunctionObject.h>
+#include <LibJS/Runtime/FunctionEnvironment.h>
+#include <LibJS/Runtime/GlobalObject.h>
+
+namespace JS {
+
+JS_DEFINE_ALLOCATOR(FunctionEnvironment);
+
+FunctionEnvironment::FunctionEnvironment(Environment* parent_environment)
+    : DeclarativeEnvironment(parent_environment)
+{
+}
+
+void FunctionEnvironment::visit_edges(Visitor& visitor)
+{
+    Base::visit_edges(visitor);
+    visitor.visit(m_this_value);
+    visitor.visit(m_new_target);
+    visitor.visit(m_function_object);
+}
+
+// 9.1.1.3.5 GetSuperBase ( ), https://tc39.es/ecma262/#sec-getsuperbase
+ThrowCompletionOr<Value> FunctionEnvironment::get_super_base() const
+{
+    VERIFY(m_function_object);
+
+    // 1. Let home be envRec.[[FunctionObject]].[[HomeObject]].
+    auto home_object = m_function_object->home_object();
+
+    // 2. If home is undefined, return undefined.
+    if (!home_object)
+        return js_undefined();
+
+    // 3. Assert: Type(home) is Object.
+
+    // 4. Return ? home.[[GetPrototypeOf]]().
+    return TRY(home_object->internal_get_prototype_of());
+}
+
+// 9.1.1.3.2 HasThisBinding ( ), https://tc39.es/ecma262/#sec-function-environment-records-hasthisbinding
+bool FunctionEnvironment::has_this_binding() const
+{
+    if (this_binding_status() == ThisBindingStatus::Lexical)
+        return false;
+    return true;
+}
+
+// 9.1.1.3.3 HasSuperBinding ( ), https://tc39.es/ecma262/#sec-function-environment-records-hassuperbinding
+bool FunctionEnvironment::has_super_binding() const
+{
+    if (this_binding_status() == ThisBindingStatus::Lexical)
+        return false;
+    if (!function_object().home_object())
+        return false;
+    return true;
+}
+
+// 9.1.1.3.4 GetThisBinding ( ), https://tc39.es/ecma262/#sec-function-environment-records-getthisbinding
+ThrowCompletionOr<Value> FunctionEnvironment::get_this_binding(VM& vm) const
+{
+    // 1. Assert: envRec.[[ThisBindingStatus]] is not lexical.
+    VERIFY(m_this_binding_status != ThisBindingStatus::Lexical);
+
+    // 2. If envRec.[[ThisBindingStatus]] is uninitialized, throw a ReferenceError exception.
+    if (m_this_binding_status == ThisBindingStatus::Uninitialized)
+        return vm.throw_completion<ReferenceError>(ErrorType::ThisHasNotBeenInitialized);
+
+    // 3. Return envRec.[[ThisValue]].
+    return m_this_value;
+}
+
+// 9.1.1.3.1 BindThisValue ( V ), https://tc39.es/ecma262/#sec-bindthisvalue
+ThrowCompletionOr<Value> FunctionEnvironment::bind_this_value(VM& vm, Value this_value)
+{
+    VERIFY(!this_value.is_empty());
+
+    // 1. Assert: envRec.[[ThisBindingStatus]] is not lexical.
+    VERIFY(m_this_binding_status != ThisBindingStatus::Lexical);
+
+    // 2. If envRec.[[ThisBindingStatus]] is initialized, throw a ReferenceError exception.
+    if (m_this_binding_status == ThisBindingStatus::Initialized)
+        return vm.throw_completion<ReferenceError>(ErrorType::ThisIsAlreadyInitialized);
+
+    // 3. Set envRec.[[ThisValue]] to V.
+    m_this_value = this_value;
+
+    // 4. Set envRec.[[ThisBindingStatus]] to initialized.
+    m_this_binding_status = ThisBindingStatus::Initialized;
+
+    // 5. Return V.
+    return this_value;
+}
+
+}