Commit graph

3 commits

Author SHA1 Message Date
Linus Groh
cbbf4abb0d LibJS: Add a way to get from a GlobalObject to its associated Realm
This is just another workaround, but it should be much more reliable
than Interpreter::realm(), especially when allocating NativeFunctions
and ECMAScriptFunctionObjects: we're guaranteed to have a GlobalObject
at that point, and it likely was set as the GlobalObject of a Realm and
can lead us back to it. We're however not guaranteed that the VM can
give us an Interpreter, which is why functions in LibWeb can be a bit
crashy at the moment.

We use a WeakPtr<Realm> to properly handle the unlikely case where the
Realm goes away after associating a GlobalObject to it.

We'll always need _something_ of this sort if we want to support
OrdinaryFunctionCreate and CreateBuiltinFunction without the explicit
realm argument while no JS is running, because they want to use the
current Realm Record (always in the first and as fallback in the second
case).
2021-10-14 23:02:19 +01:00
Linus Groh
2b8d5696ab LibJS: Allocate a Realm next to GlobalObject in Interpreter::create()
Also pass a Realm reference to the Bytecode::Interpreter constructor,
just like we pass the GlobalObject.
2021-09-12 11:10:20 +01:00
Linus Groh
d9c3bafcd9 LibJS: Start adding a JS::Realm class (spec's "Realm Record") 2021-09-12 11:10:20 +01:00