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LibJS: Loosen type system

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This commits makes effort towards tolerating some of javascript's quirks
when it comes to its type system, note that the interpreter's way of
handling type coercion is still not mature at all, for example, we still
have to implement NaN instead of just crashing when trying to parse a
string and failing.
This commit is contained in:
0xtechnobabble 2020-03-16 00:19:41 +02:00 • committed by Andreas Kling
parent 419d57e492
commit 4d22a142f7
Notes: sideshowbarker 2024-07-19 08:16:48 +09:00
9 changed files with 109 additions and 55 deletions
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30
Libraries/LibJS/Object.cpp
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@ -87,4 +87,34 @@ bool Object::has_own_property(const String& property_name) const
return m_properties.get(property_name).has_value();
}
Value Object::to_primitive(PreferredType preferred_type) const
{
Value result = js_undefined();
switch (preferred_type) {
case PreferredType::Default:
case PreferredType::Number: {
result = value_of();
if (result.is_object()) {
result = to_string();
}
break;
}
case PreferredType::String: {
result = to_string();
if (result.is_object())
result = value_of();
break;
}
}
ASSERT(!result.is_object());
return result;
}
Value Object::to_string() const
{
return js_string(heap(), String::format("[object %s]", class_name()));
}
}