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@ -5,7 +5,12 @@
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//!
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//! [spec]: https://tc39.es/ecma262/#sec-ordinary-object-internal-methods-and-internal-slots
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use super::{JsPrototype, PROTOTYPE}; |
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use std::ops::{Deref, DerefMut}; |
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use super::{ |
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shape::slot::{Slot, SlotAttributes}, |
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JsPrototype, PROTOTYPE, |
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}; |
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use crate::{ |
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context::intrinsics::{StandardConstructor, StandardConstructors}, |
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object::JsObject, |
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@ -28,6 +33,52 @@ pub(super) mod string;
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pub(crate) use array::ARRAY_EXOTIC_INTERNAL_METHODS; |
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pub(crate) use integer_indexed::integer_indexed_element_set; |
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/// A lightweight wrapper around [`Context`] used in [`InternalObjectMethods`].
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#[derive(Debug)] |
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pub(crate) struct InternalMethodContext<'ctx> { |
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context: &'ctx mut Context, |
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slot: Slot, |
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} |
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impl<'ctx> InternalMethodContext<'ctx> { |
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/// Create a new [`InternalMethodContext`].
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pub(crate) fn new(context: &'ctx mut Context) -> Self { |
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Self { |
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context, |
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slot: Slot::new(), |
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} |
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} |
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/// Gets the [`Slot`] associated with this [`InternalMethodContext`].
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#[inline] |
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pub(crate) fn slot(&mut self) -> &mut Slot { |
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&mut self.slot |
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} |
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} |
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impl Deref for InternalMethodContext<'_> { |
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type Target = Context; |
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#[inline] |
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fn deref(&self) -> &Self::Target { |
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self.context |
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} |
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} |
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impl DerefMut for InternalMethodContext<'_> { |
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#[inline] |
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fn deref_mut(&mut self) -> &mut Self::Target { |
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self.context |
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} |
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} |
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impl<'context> From<&'context mut Context> for InternalMethodContext<'context> { |
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#[inline] |
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fn from(context: &'context mut Context) -> Self { |
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Self::new(context) |
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} |
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} |
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impl JsObject { |
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/// Internal method `[[GetPrototypeOf]]`
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///
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@ -97,7 +148,7 @@ impl JsObject {
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pub(crate) fn __get_own_property__( |
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&self, |
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key: &PropertyKey, |
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context: &mut Context, |
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context: &mut InternalMethodContext<'_>, |
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) -> JsResult<Option<PropertyDescriptor>> { |
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let _timer = Profiler::global().start_event("Object::__get_own_property__", "object"); |
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(self.vtable().__get_own_property__)(self, key, context) |
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@ -115,7 +166,7 @@ impl JsObject {
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&self, |
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key: &PropertyKey, |
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desc: PropertyDescriptor, |
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context: &mut Context, |
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context: &mut InternalMethodContext<'_>, |
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) -> JsResult<bool> { |
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let _timer = Profiler::global().start_event("Object::__define_own_property__", "object"); |
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(self.vtable().__define_own_property__)(self, key, desc, context) |
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@ -132,7 +183,7 @@ impl JsObject {
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pub(crate) fn __has_property__( |
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&self, |
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key: &PropertyKey, |
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context: &mut Context, |
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context: &mut InternalMethodContext<'_>, |
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) -> JsResult<bool> { |
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let _timer = Profiler::global().start_event("Object::__has_property__", "object"); |
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(self.vtable().__has_property__)(self, key, context) |
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@ -150,7 +201,7 @@ impl JsObject {
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&self, |
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key: &PropertyKey, |
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receiver: JsValue, |
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context: &mut Context, |
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context: &mut InternalMethodContext<'_>, |
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) -> JsResult<JsValue> { |
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let _timer = Profiler::global().start_event("Object::__get__", "object"); |
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(self.vtable().__get__)(self, key, receiver, context) |
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@ -169,7 +220,7 @@ impl JsObject {
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key: PropertyKey, |
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value: JsValue, |
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receiver: JsValue, |
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context: &mut Context, |
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context: &mut InternalMethodContext<'_>, |
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) -> JsResult<bool> { |
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let _timer = Profiler::global().start_event("Object::__set__", "object"); |
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(self.vtable().__set__)(self, key, value, receiver, context) |
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@ -183,7 +234,11 @@ impl JsObject {
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/// - [ECMAScript reference][spec]
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///
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/// [spec]: https://tc39.es/ecma262/#sec-ordinary-object-internal-methods-and-internal-slots-delete-p
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pub(crate) fn __delete__(&self, key: &PropertyKey, context: &mut Context) -> JsResult<bool> { |
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pub(crate) fn __delete__( |
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&self, |
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key: &PropertyKey, |
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context: &mut InternalMethodContext<'_>, |
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) -> JsResult<bool> { |
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let _timer = Profiler::global().start_event("Object::__delete__", "object"); |
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(self.vtable().__delete__)(self, key, context) |
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} |
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@ -215,6 +270,7 @@ impl JsObject {
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/// - [ECMAScript reference][spec]
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///
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/// [spec]: https://tc39.es/ecma262/#sec-ecmascript-function-objects-call-thisargument-argumentslist
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#[track_caller] |
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pub(crate) fn __call__(&self, argument_count: usize) -> CallValue { |
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CallValue::Pending { |
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func: self.vtable().__call__, |
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@ -233,6 +289,7 @@ impl JsObject {
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/// - [ECMAScript reference][spec]
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///
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/// [spec]: https://tc39.es/ecma262/#sec-ecmascript-function-objects-construct-argumentslist-newtarget
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#[track_caller] |
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pub(crate) fn __construct__(&self, argument_count: usize) -> CallValue { |
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CallValue::Pending { |
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func: self.vtable().__construct__, |
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@ -283,19 +340,36 @@ pub(crate) struct InternalObjectMethods {
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pub(crate) __set_prototype_of__: fn(&JsObject, JsPrototype, &mut Context) -> JsResult<bool>, |
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pub(crate) __is_extensible__: fn(&JsObject, &mut Context) -> JsResult<bool>, |
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pub(crate) __prevent_extensions__: fn(&JsObject, &mut Context) -> JsResult<bool>, |
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pub(crate) __get_own_property__: |
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fn(&JsObject, &PropertyKey, &mut Context) -> JsResult<Option<PropertyDescriptor>>, |
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pub(crate) __define_own_property__: |
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fn(&JsObject, &PropertyKey, PropertyDescriptor, &mut Context) -> JsResult<bool>, |
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pub(crate) __has_property__: fn(&JsObject, &PropertyKey, &mut Context) -> JsResult<bool>, |
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pub(crate) __get__: fn(&JsObject, &PropertyKey, JsValue, &mut Context) -> JsResult<JsValue>, |
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pub(crate) __set__: |
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fn(&JsObject, PropertyKey, JsValue, JsValue, &mut Context) -> JsResult<bool>, |
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pub(crate) __delete__: fn(&JsObject, &PropertyKey, &mut Context) -> JsResult<bool>, |
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pub(crate) __own_property_keys__: fn(&JsObject, &mut Context) -> JsResult<Vec<PropertyKey>>, |
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pub(crate) __call__: fn(&JsObject, argument_count: usize, &mut Context) -> JsResult<CallValue>, |
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pub(crate) __get_own_property__: fn( |
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&JsObject, |
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&PropertyKey, |
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&mut InternalMethodContext<'_>, |
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) -> JsResult<Option<PropertyDescriptor>>, |
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pub(crate) __define_own_property__: fn( |
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&JsObject, |
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&PropertyKey, |
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PropertyDescriptor, |
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&mut InternalMethodContext<'_>, |
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) -> JsResult<bool>, |
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pub(crate) __has_property__: |
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fn(&JsObject, &PropertyKey, &mut InternalMethodContext<'_>) -> JsResult<bool>, |
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pub(crate) __get__: |
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fn(&JsObject, &PropertyKey, JsValue, &mut InternalMethodContext<'_>) -> JsResult<JsValue>, |
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pub(crate) __set__: fn( |
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&JsObject, |
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PropertyKey, |
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JsValue, |
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JsValue, |
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&mut InternalMethodContext<'_>, |
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) -> JsResult<bool>, |
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pub(crate) __delete__: |
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fn(&JsObject, &PropertyKey, &mut InternalMethodContext<'_>) -> JsResult<bool>, |
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pub(crate) __own_property_keys__: |
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fn(&JsObject, context: &mut Context) -> JsResult<Vec<PropertyKey>>, |
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pub(crate) __call__: |
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fn(&JsObject, argument_count: usize, context: &mut Context) -> JsResult<CallValue>, |
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pub(crate) __construct__: |
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fn(&JsObject, argument_count: usize, &mut Context) -> JsResult<CallValue>, |
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fn(&JsObject, argument_count: usize, context: &mut Context) -> JsResult<CallValue>, |
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} |
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/// The return value of an internal method (`[[Call]]` or `[[Construct]]`).
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@ -447,7 +521,7 @@ pub(crate) fn ordinary_prevent_extensions(
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pub(crate) fn ordinary_get_own_property( |
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obj: &JsObject, |
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key: &PropertyKey, |
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_context: &mut Context, |
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context: &mut InternalMethodContext<'_>, |
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) -> JsResult<Option<PropertyDescriptor>> { |
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let _timer = Profiler::global().start_event("Object::ordinary_get_own_property", "object"); |
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// 1. Assert: IsPropertyKey(P) is true.
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@ -464,7 +538,7 @@ pub(crate) fn ordinary_get_own_property(
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// 7. Set D.[[Enumerable]] to the value of X's [[Enumerable]] attribute.
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// 8. Set D.[[Configurable]] to the value of X's [[Configurable]] attribute.
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// 9. Return D.
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Ok(obj.borrow().properties.get(key)) |
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Ok(obj.borrow().properties.get_with_slot(key, context.slot())) |
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} |
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/// Abstract operation `OrdinaryDefineOwnProperty`.
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@ -477,9 +551,10 @@ pub(crate) fn ordinary_define_own_property(
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obj: &JsObject, |
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key: &PropertyKey, |
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desc: PropertyDescriptor, |
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context: &mut Context, |
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context: &mut InternalMethodContext<'_>, |
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) -> JsResult<bool> { |
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let _timer = Profiler::global().start_event("Object::ordinary_define_own_property", "object"); |
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// 1. Let current be ? O.[[GetOwnProperty]](P).
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let current = obj.__get_own_property__(key, context)?; |
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@ -492,6 +567,7 @@ pub(crate) fn ordinary_define_own_property(
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extensible, |
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desc, |
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current, |
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context.slot(), |
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)) |
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} |
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@ -504,18 +580,23 @@ pub(crate) fn ordinary_define_own_property(
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pub(crate) fn ordinary_has_property( |
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obj: &JsObject, |
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key: &PropertyKey, |
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context: &mut Context, |
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context: &mut InternalMethodContext<'_>, |
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) -> JsResult<bool> { |
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let _timer = Profiler::global().start_event("Object::ordinary_has_property", "object"); |
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// 1. Assert: IsPropertyKey(P) is true.
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// 2. Let hasOwn be ? O.[[GetOwnProperty]](P).
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// 3. If hasOwn is not undefined, return true.
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if obj.__get_own_property__(key, context)?.is_some() { |
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context.slot().attributes |= SlotAttributes::FOUND; |
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Ok(true) |
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} else { |
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// 4. Let parent be ? O.[[GetPrototypeOf]]().
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let parent = obj.__get_prototype_of__(context)?; |
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context.slot().set_not_cachable_if_already_prototype(); |
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context.slot().attributes |= SlotAttributes::PROTOTYPE; |
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parent |
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// 5. If parent is not null, then
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// a. Return ? parent.[[HasProperty]](P).
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@ -534,7 +615,7 @@ pub(crate) fn ordinary_get(
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obj: &JsObject, |
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key: &PropertyKey, |
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receiver: JsValue, |
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context: &mut Context, |
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context: &mut InternalMethodContext<'_>, |
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) -> JsResult<JsValue> { |
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let _timer = Profiler::global().start_event("Object::ordinary_get", "object"); |
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// 1. Assert: IsPropertyKey(P) is true.
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@ -544,6 +625,9 @@ pub(crate) fn ordinary_get(
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None => { |
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// a. Let parent be ? O.[[GetPrototypeOf]]().
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if let Some(parent) = obj.__get_prototype_of__(context)? { |
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context.slot().set_not_cachable_if_already_prototype(); |
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context.slot().attributes |= SlotAttributes::PROTOTYPE; |
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// c. Return ? parent.[[Get]](P, Receiver).
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parent.__get__(key, receiver, context) |
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} |
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@ -552,20 +636,24 @@ pub(crate) fn ordinary_get(
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Ok(JsValue::undefined()) |
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} |
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} |
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Some(ref desc) => match desc.kind() { |
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// 4. If IsDataDescriptor(desc) is true, return desc.[[Value]].
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DescriptorKind::Data { |
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value: Some(value), .. |
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} => Ok(value.clone()), |
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// 5. Assert: IsAccessorDescriptor(desc) is true.
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// 6. Let getter be desc.[[Get]].
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DescriptorKind::Accessor { get: Some(get), .. } if !get.is_undefined() => { |
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// 8. Return ? Call(getter, Receiver).
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get.call(&receiver, &[], context) |
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Some(ref desc) => { |
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context.slot().attributes |= SlotAttributes::FOUND; |
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match desc.kind() { |
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// 4. If IsDataDescriptor(desc) is true, return desc.[[Value]].
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DescriptorKind::Data { |
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value: Some(value), .. |
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} => Ok(value.clone()), |
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// 5. Assert: IsAccessorDescriptor(desc) is true.
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// 6. Let getter be desc.[[Get]].
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DescriptorKind::Accessor { get: Some(get), .. } if !get.is_undefined() => { |
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// 8. Return ? Call(getter, Receiver).
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get.call(&receiver, &[], context) |
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} |
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// 7. If getter is undefined, return undefined.
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_ => Ok(JsValue::undefined()), |
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} |
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// 7. If getter is undefined, return undefined.
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_ => Ok(JsValue::undefined()), |
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}, |
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} |
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} |
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} |
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@ -580,7 +668,7 @@ pub(crate) fn ordinary_set(
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key: PropertyKey, |
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value: JsValue, |
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receiver: JsValue, |
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context: &mut Context, |
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context: &mut InternalMethodContext<'_>, |
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) -> JsResult<bool> { |
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let _timer = Profiler::global().start_event("Object::ordinary_set", "object"); |
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@ -599,11 +687,20 @@ pub(crate) fn ordinary_set(
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// a. Let parent be ? O.[[GetPrototypeOf]]().
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// b. If parent is not null, then
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else if let Some(parent) = obj.__get_prototype_of__(context)? { |
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context.slot().set_not_cachable_if_already_prototype(); |
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context.slot().attributes |= SlotAttributes::PROTOTYPE; |
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// i. Return ? parent.[[Set]](P, V, Receiver).
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return parent.__set__(key, value, receiver, context); |
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} |
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// c. Else,
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else { |
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// It's not on prototype chain.
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context |
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.slot() |
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.attributes |
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.remove(SlotAttributes::PROTOTYPE | SlotAttributes::NOT_CACHABLE); |
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// i. Set ownDesc to the PropertyDescriptor { [[Value]]: undefined, [[Writable]]: true,
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// [[Enumerable]]: true, [[Configurable]]: true }.
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PropertyDescriptor::builder() |
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@ -626,6 +723,12 @@ pub(crate) fn ordinary_set(
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return Ok(false); |
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}; |
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// NOTE(HaledOdat): If the object and receiver are not the same then it's not inline cachable for now.
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context.slot().attributes.set( |
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SlotAttributes::NOT_CACHABLE, |
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!JsObject::equals(obj, receiver), |
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); |
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// c. Let existingDescriptor be ? Receiver.[[GetOwnProperty]](P).
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// d. If existingDescriptor is not undefined, then
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if let Some(ref existing_desc) = receiver.__get_own_property__(&key, context)? { |
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@ -647,12 +750,15 @@ pub(crate) fn ordinary_set(
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context, |
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); |
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} |
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// e. Else
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// i. Assert: Receiver does not currently have a property P.
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// ii. Return ? CreateDataProperty(Receiver, P, V).
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return receiver.create_data_property(key, value, context); |
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return receiver.create_data_property_with_slot(key, value, context); |
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} |
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context.slot().attributes |= SlotAttributes::FOUND; |
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// 4. Assert: IsAccessorDescriptor(ownDesc) is true.
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debug_assert!(own_desc.is_accessor_descriptor()); |
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@ -679,7 +785,7 @@ pub(crate) fn ordinary_set(
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pub(crate) fn ordinary_delete( |
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obj: &JsObject, |
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key: &PropertyKey, |
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context: &mut Context, |
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context: &mut InternalMethodContext<'_>, |
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) -> JsResult<bool> { |
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let _timer = Profiler::global().start_event("Object::ordinary_delete", "object"); |
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// 1. Assert: IsPropertyKey(P) is true.
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@ -752,7 +858,7 @@ pub(crate) fn is_compatible_property_descriptor(
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Profiler::global().start_event("Object::is_compatible_property_descriptor", "object"); |
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// 1. Return ValidateAndApplyPropertyDescriptor(undefined, undefined, Extensible, Desc, Current).
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validate_and_apply_property_descriptor(None, extensible, desc, current) |
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validate_and_apply_property_descriptor(None, extensible, desc, current, &mut Slot::new()) |
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} |
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/// Abstract operation `ValidateAndApplyPropertyDescriptor`
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@ -766,6 +872,7 @@ pub(crate) fn validate_and_apply_property_descriptor(
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extensible: bool, |
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desc: PropertyDescriptor, |
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current: Option<PropertyDescriptor>, |
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slot: &mut Slot, |
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) -> bool { |
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let _timer = |
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Profiler::global().start_event("Object::validate_and_apply_property_descriptor", "object"); |
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@ -781,7 +888,7 @@ pub(crate) fn validate_and_apply_property_descriptor(
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// b. Assert: extensible is true.
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if let Some((obj, key)) = obj_and_key { |
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obj.borrow_mut().properties.insert( |
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obj.borrow_mut().properties.insert_with_slot( |
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key, |
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// c. If IsGenericDescriptor(Desc) is true or IsDataDescriptor(Desc) is true, then
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if desc.is_generic_descriptor() || desc.is_data_descriptor() { |
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@ -803,7 +910,9 @@ pub(crate) fn validate_and_apply_property_descriptor(
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// its default value.
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desc.into_accessor_defaulted() |
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}, |
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slot, |
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); |
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slot.attributes |= SlotAttributes::FOUND; |
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} |
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// e. Return true.
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@ -899,7 +1008,10 @@ pub(crate) fn validate_and_apply_property_descriptor(
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// a. For each field of Desc that is present, set the corresponding attribute of the
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// property named P of object O to the value of the field.
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current.fill_with(&desc); |
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obj.borrow_mut().properties.insert(key, current); |
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obj.borrow_mut() |
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.properties |
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.insert_with_slot(key, current, slot); |
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slot.attributes |= SlotAttributes::FOUND; |
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} |
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// 10. Return true.
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Haled Odat
12 months ago
committed by
GitHub