LibJS: Drop "Record" suffix from all the *Environment record classes

"Records" in the spec are basically C++ classes, so let's drop this
mouthful of a suffix.

1 files changed, 83 insertions, 0 deletions

diff --git a/Userland/Libraries/LibJS/Runtime/FunctionEnvironment.cpp b/Userland/Libraries/LibJS/Runtime/FunctionEnvironment.cpp
new file mode 100644
index 0000000000..722a5e55c7
--- /dev/null
+++ b/Userland/Libraries/LibJS/Runtime/FunctionEnvironment.cpp
@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibJS/Interpreter.h>
+#include <LibJS/Runtime/FunctionEnvironment.h>
+#include <LibJS/Runtime/FunctionObject.h>
+#include <LibJS/Runtime/GlobalObject.h>
+
+namespace JS {
+
+FunctionEnvironment::FunctionEnvironment(Environment* parent_scope, HashMap<FlyString, Variable> variables)
+    : DeclarativeEnvironment(variables, parent_scope)
+{
+}
+
+FunctionEnvironment::~FunctionEnvironment()
+{
+}
+
+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
+Value FunctionEnvironment::get_super_base() const
+{
+    VERIFY(m_function_object);
+    auto home_object = m_function_object->home_object();
+    if (home_object.is_undefined())
+        return js_undefined();
+    return home_object.as_object().prototype();
+}
+
+// 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().is_undefined())
+        return false;
+    return true;
+}
+
+// 9.1.1.3.4 GetThisBinding ( ), https://tc39.es/ecma262/#sec-function-environment-records-getthisbinding
+Value FunctionEnvironment::get_this_binding(GlobalObject& global_object) const
+{
+    VERIFY(has_this_binding());
+    if (this_binding_status() == ThisBindingStatus::Uninitialized) {
+        vm().throw_exception<ReferenceError>(global_object, ErrorType::ThisHasNotBeenInitialized);
+        return {};
+    }
+    return m_this_value;
+}
+
+// 9.1.1.3.1 BindThisValue ( V ), https://tc39.es/ecma262/#sec-bindthisvalue
+Value FunctionEnvironment::bind_this_value(GlobalObject& global_object, Value this_value)
+{
+    VERIFY(this_binding_status() != ThisBindingStatus::Lexical);
+    if (this_binding_status() == ThisBindingStatus::Initialized) {
+        vm().throw_exception<ReferenceError>(global_object, ErrorType::ThisIsAlreadyInitialized);
+        return {};
+    }
+    m_this_value = this_value;
+    m_this_binding_status = ThisBindingStatus::Initialized;
+    return this_value;
+}
+
+}