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LibJS: Remove the NativeProperty mechanism from LibJS

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These were an ad-hoc way to implement special behaviour when reading or
writing to specific object properties. Because these were effectively
replaced by the abillity to override the internal methods of Object,
they are no longer needed.
This commit is contained in:
Idan Horowitz
2021-07-07 19:34:26 +03:00
committed by Linus Groh
parent 306d59276a
commit 795786387b
Notes: sideshowbarker 2024-07-18 10:08:08 +09:00 
Author: https://github.com/IdanHo
Commit: https://github.com/SerenityOS/serenity/commit/795786387b0
Pull-request: https://github.com/SerenityOS/serenity/pull/8532
Reviewed-by: https://github.com/alimpfard
11 changed files with 9 additions and 157 deletions
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63
Userland/Libraries/LibJS/Runtime/Object.cpp
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@@ -15,7 +15,6 @@
#include <LibJS/Runtime/Error.h>
#include <LibJS/Runtime/GlobalObject.h>
#include <LibJS/Runtime/NativeFunction.h>
#include <LibJS/Runtime/NativeProperty.h>
#include <LibJS/Runtime/Object.h>
#include <LibJS/Runtime/PropertyDescriptor.h>
#include <LibJS/Runtime/ProxyObject.h>
@@ -903,7 +902,7 @@ bool Object::set_immutable_prototype(Object* prototype)
return false;
}
Optional<ValueAndAttributes> Object::storage_get(PropertyName const& property_name, CallNativeProperty call_native_property) const
Optional<ValueAndAttributes> Object::storage_get(PropertyName const& property_name) const
{
VERIFY(property_name.is_valid());
@@ -923,8 +922,6 @@ Optional<ValueAndAttributes> Object::storage_get(PropertyName const& property_na
value = m_storage[metadata->offset];
attributes = metadata->attributes;
}
if (value.is_native_property() && call_native_property == CallNativeProperty::Yes)
value = call_native_property_getter(value.as_native_property(), this);
return ValueAndAttributes { .value = value, .attributes = attributes };
}
@@ -944,15 +941,7 @@ void Object::storage_set(PropertyName const& property_name, ValueAndAttributes c
if (property_name.is_number()) {
auto index = property_name.as_number();
if (value.is_native_property()) {
m_indexed_properties.put(index, value, attributes);
} else {
auto existing_value = m_indexed_properties.get(index);
if (existing_value.has_value() && existing_value->value.is_native_property())
call_native_property_setter(existing_value->value.as_native_property(), this, value);
else
m_indexed_properties.put(index, value, attributes);
}
m_indexed_properties.put(index, value, attributes);
return;
}
@@ -998,15 +987,7 @@ void Object::storage_set(PropertyName const& property_name, ValueAndAttributes c
VERIFY(metadata.has_value());
}
if (value.is_native_property()) {
m_storage[metadata->offset] = value;
} else {
auto existing_value = m_storage[metadata->offset];
if (existing_value.is_native_property())
call_native_property_setter(existing_value.as_native_property(), this, value);
else
m_storage[metadata->offset] = value;
}
m_storage[metadata->offset] = value;
}
void Object::storage_delete(PropertyName const& property_name)
@@ -1090,7 +1071,7 @@ Value Object::get_without_side_effects(const PropertyName& property_name) const
{
auto* object = this;
while (object) {
auto value_and_attributes = object->storage_get(property_name, CallNativeProperty::No);
auto value_and_attributes = object->storage_get(property_name);
if (value_and_attributes.has_value())
return value_and_attributes->value;
object = object->prototype();
@@ -1113,11 +1094,6 @@ void Object::define_native_function(PropertyName const& property_name, Function<
define_direct_property(property_name, function, attribute);
}
void Object::define_native_property(PropertyName const& property_name, Function<Value(VM&, GlobalObject&)> getter, Function<void(VM&, GlobalObject&, Value)> setter, PropertyAttributes attribute)
{
define_direct_property(property_name, heap().allocate_without_global_object<NativeProperty>(move(getter), move(setter)), attribute);
}
// 20.1.2.3.1 ObjectDefineProperties ( O, Properties ), https://tc39.es/ecma262/#sec-objectdefineproperties
Object* Object::define_properties(Value properties)
{
@@ -1238,35 +1214,4 @@ Value Object::invoke_internal(const StringOrSymbol& property_name, Optional<Mark
return vm.call(property.as_function(), this, move(arguments));
}
Value Object::call_native_property_getter(NativeProperty& property, Value this_value) const
{
auto& vm = this->vm();
ExecutionContext execution_context;
if (auto* interpreter = vm.interpreter_if_exists())
execution_context.current_node = interpreter->current_node();
execution_context.is_strict_mode = vm.in_strict_mode();
execution_context.this_value = this_value;
vm.push_execution_context(execution_context, global_object());
if (vm.exception())
return {};
auto result = property.get(vm, global_object());
vm.pop_execution_context();
return result;
}
void Object::call_native_property_setter(NativeProperty& property, Value this_value, Value setter_value) const
{
auto& vm = this->vm();
ExecutionContext execution_context;
if (auto* interpreter = vm.interpreter_if_exists())
execution_context.current_node = interpreter->current_node();
execution_context.is_strict_mode = vm.in_strict_mode();
execution_context.this_value = this_value;
vm.push_execution_context(execution_context, global_object());
if (vm.exception())
return;
property.set(vm, global_object(), setter_value);
vm.pop_execution_context();
}
}