@ -1,5 +1,8 @@
use crate ::{
object ::{ InternalObjectMethods , JsObject , ORDINARY_INTERNAL_METHODS } ,
object ::{
internal_methods ::ordinary_get_prototype_of , InternalObjectMethods , JsObject , JsPrototype ,
ORDINARY_INTERNAL_METHODS ,
} ,
property ::{ DescriptorKind , PropertyDescriptor , PropertyKey } ,
value ::JsValue ,
Context , JsResult ,
@ -13,17 +16,96 @@ use boa_profiler::Profiler;
///
/// [spec]: https://tc39.es/ecma262/#sec-global-object
pub ( crate ) static GLOBAL_INTERNAL_METHODS : InternalObjectMethods = InternalObjectMethods {
__get_own_property__ : global_get_own_property ,
__get_prototype_of__ : global_get_prototype_of ,
__set_prototype_of__ : global_set_prototype_of ,
__is_extensible__ : global_is_extensible ,
__prevent_extensions__ : global_prevent_extensions ,
__get_own_property__ : global_get_own_property ,
__define_own_property__ : global_define_own_property ,
__has_property__ : global_has_property ,
__get__ : global_get ,
__set__ : global_set ,
__delete__ : global_delete ,
__own_property_keys__ : global_own_property_keys ,
.. ORDINARY_INTERNAL_METHODS
} ;
/// Abstract operation `OrdinaryGetPrototypeOf`.
///
/// More information:
/// - [ECMAScript reference][spec]
///
/// [spec]: https://tc39.es/ecma262/#sec-ordinarygetprototypeof
#[ inline ]
#[ allow(clippy::unnecessary_wraps) ]
pub ( crate ) fn global_get_prototype_of (
_ : & JsObject ,
context : & mut Context ,
) -> JsResult < JsPrototype > {
// 1. Return O.[[Prototype]].
Ok ( context . realm . global_prototype . clone ( ) )
}
/// Abstract operation `OrdinarySetPrototypeOf`.
///
/// More information:
/// - [ECMAScript reference][spec]
///
/// [spec]: https://tc39.es/ecma262/#sec-ordinarysetprototypeof
#[ inline ]
#[ allow(clippy::unnecessary_wraps) ]
pub ( crate ) fn global_set_prototype_of (
_ : & JsObject ,
val : JsPrototype ,
context : & mut Context ,
) -> JsResult < bool > {
// 1. Assert: Either Type(V) is Object or Type(V) is Null.
{
// 2. Let current be O.[[Prototype]].
let current = & context . realm . global_prototype ;
// 3. If SameValue(V, current) is true, return true.
if val = = * current {
return Ok ( true ) ;
}
}
// 4. Let extensible be O.[[Extensible]].
// 5. If extensible is false, return false.
if ! context . realm . global_extensible {
return Ok ( false ) ;
}
// 6. Let p be V.
let mut p = val . clone ( ) ;
// 7. Let done be false.
// 8. Repeat, while done is false,
// a. If p is null, set done to true.
while let Some ( proto ) = p {
// b. Else if SameValue(p, O) is true, return false.
if & proto = = context . realm . global_object ( ) {
return Ok ( false ) ;
}
// c. Else,
// i. If p.[[GetPrototypeOf]] is not the ordinary object internal method defined
// in 10.1.1, set done to true.
else if proto . borrow ( ) . data . internal_methods . __get_prototype_of__ as usize
! = ordinary_get_prototype_of as usize
{
break ;
}
// ii. Else, set p to p.[[Prototype]].
p = proto . prototype ( ) . clone ( ) ;
}
// 9. Set O.[[Prototype]] to V.
context . realm . global_object ( ) . set_prototype ( val ) ;
// 10. Return true.
Ok ( true )
}
/// Abstract operation `OrdinaryGetOwnProperty`.
///
/// More information:
@ -125,7 +207,20 @@ pub(crate) fn global_has_property(
context : & mut Context ,
) -> JsResult < bool > {
let _timer = Profiler ::global ( ) . start_event ( "Object::global_has_property" , "object" ) ;
Ok ( context . realm . global_property_map . contains_key ( key ) )
// 1. Assert: IsPropertyKey(P) is true.
// 2. Let hasOwn be ? O.[[GetOwnProperty]](P).
// 3. If hasOwn is not undefined, return true.
if context . realm . global_property_map . contains_key ( key ) {
Ok ( true )
} else {
// 4. Let parent be ? O.[[GetPrototypeOf]]().
let parent = context . realm . global_prototype . clone ( ) ;
// 5. If parent is not null, then
// a. Return ? parent.[[HasProperty]](P).
// 6. Return false.
parent . map_or ( Ok ( false ) , | obj | obj . __has_property__ ( key , context ) )
}
}
/// Abstract operation `OrdinaryGet`.
@ -148,9 +243,16 @@ pub(crate) fn global_get(
match global_get_own_property ( obj , key , context ) ? {
// If desc is undefined, then
None = > {
// a. Let parent be ? O.[[GetPrototypeOf]]().
if let Some ( parent ) = context . realm . global_prototype . clone ( ) {
// c. Return ? parent.[[Get]](P, Receiver).
parent . __get__ ( key , receiver , context )
}
// b. If parent is null, return undefined.
else {
Ok ( JsValue ::undefined ( ) )
}
}
Some ( ref desc ) = > match desc . kind ( ) {
// 4. If IsDataDescriptor(desc) is true, return desc.[[Value]].
DescriptorKind ::Data {
@ -309,6 +411,61 @@ pub(crate) fn global_delete(
}
}
/// Abstract operation `OrdinaryOwnPropertyKeys`.
///
/// More information:
/// - [ECMAScript reference][spec]
///
/// [spec]: https://tc39.es/ecma262/#sec-ordinaryownpropertykeys
#[ inline ]
#[ allow(clippy::unnecessary_wraps) ]
pub ( crate ) fn global_own_property_keys (
_ : & JsObject ,
context : & mut Context ,
) -> JsResult < Vec < PropertyKey > > {
// 1. Let keys be a new empty List.
let mut keys = Vec ::new ( ) ;
let ordered_indexes = {
let mut indexes : Vec < _ > = context
. realm
. global_property_map
. index_property_keys ( )
. collect ( ) ;
indexes . sort_unstable ( ) ;
indexes
} ;
// 2. For each own property key P of O such that P is an array index, in ascending numeric index order, do
// a. Add P as the last element of keys.
keys . extend ( ordered_indexes . into_iter ( ) . map ( Into ::into ) ) ;
// 3. For each own property key P of O such that Type(P) is String and P is not an array index, in ascending chronological order of property creation, do
// a. Add P as the last element of keys.
keys . extend (
context
. realm
. global_property_map
. string_property_keys ( )
. cloned ( )
. map ( Into ::into ) ,
) ;
// 4. For each own property key P of O such that Type(P) is Symbol, in ascending chronological order of property creation, do
// a. Add P as the last element of keys.
keys . extend (
context
. realm
. global_property_map
. symbol_property_keys ( )
. cloned ( )
. map ( Into ::into ) ,
) ;
// 5. Return keys.
Ok ( keys )
}
/// Abstract operation `ValidateAndApplyPropertyDescriptor`
///
/// More information:
raskad
2 years ago