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LibJS: Remove Object::is_array() in favor of Value::is_array() and RTTI

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It's way too easy to get this wrong: for the IsArray abstract operation,
Value::is_array() needs to be called. Since we have RTTI, the virtual
Object::is_array() method is not needed anymore - if we need to know
whether something is *actually* a JS::Array (we currently check in more
cases than we should, I think) and not a Proxy with an Array target, we
should do that in a way that doesn't look like an abstract operation.
This commit is contained in:
Linus Groh 2021-07-05 18:58:51 +01:00
parent 06ffc0c4db
commit 0ba81dc0b7
8 changed files with 8 additions and 11 deletions
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4
Userland/Libraries/LibJS/Runtime/Value.cpp
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@ -203,7 +203,7 @@ bool Value::is_array(GlobalObject& global_object) const
if (!is_object())
return false;
auto& object = as_object();
if (object.is_array())
if (is<Array>(object))
return true;
if (is<ProxyObject>(object)) {
auto& proxy = static_cast<ProxyObject const&>(object);
@ -219,7 +219,7 @@ bool Value::is_array(GlobalObject& global_object) const
Array& Value::as_array()
{
VERIFY(is_object() && as_object().is_array());
VERIFY(is_object() && is<Array>(as_object()));
return static_cast<Array&>(*m_value.as_object);
}