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LibJS: Implement basic object property assignment

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This is pretty naive, we just walk up the prototype chain and call any
NativeProperty setter that we find. If we don't find one, we put/set
the value as an own property of the object itself.
This commit is contained in:
Andreas Kling 2020-03-19 17:39:13 +01:00
parent 7268499c76
commit 1a10470c1d
3 changed files with 32 additions and 9 deletions
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11
Libraries/LibJS/Runtime/Object.cpp
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@ -60,6 +60,17 @@ Value Object::get(String property_name) const
void Object::put(String property_name, Value value)
{
Object* object = this;
while (object) {
auto value_here = object->m_properties.get(property_name);
if (value_here.has_value()) {
if (value_here.value().is_object() && value_here.value().as_object()->is_native_property()) {
static_cast<NativeProperty*>(value_here.value().as_object())->set(const_cast<Object*>(this), value);
return;
}
}
object = object->prototype();
}
m_properties.set(property_name, move(value));
}