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LibJS: Make AbstractOperations::canonical_num... take a PropertyName

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This allows us to hide the fact that it could be a number and means we
no longer need to check for this optimization in string and typedarray
This commit is contained in:
davidot 2021-07-05 01:55:45 +02:00 • committed by Linus Groh
parent 9b7e48c6bd
commit c52d515028
4 changed files with 31 additions and 64 deletions
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11
Userland/Libraries/LibJS/Runtime/StringObject.cpp
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@ -45,8 +45,6 @@ void StringObject::visit_edges(Cell::Visitor& visitor)
// 10.4.3.5 StringGetOwnProperty ( S, P ),https://tc39.es/ecma262/#sec-stringgetownproperty
static Optional<PropertyDescriptor> string_get_own_property(GlobalObject& global_object, StringObject const& string, PropertyName const& property_name)
{
auto& vm = global_object.vm();
// 1. Assert: S is an Object that has a [[StringData]] internal slot.
// 2. Assert: IsPropertyKey(P) is true.
VERIFY(property_name.is_valid());
@ -58,14 +56,7 @@ static Optional<PropertyDescriptor> string_get_own_property(GlobalObject& global
return {};
// 4. Let index be ! CanonicalNumericIndexString(P).
// NOTE: If the property name is a number type (An implementation-defined optimized
// property key type), it can be treated as a string property that has already been
// converted successfully into a canonical numeric index.
Value index;
if (property_name.is_string())
index = canonical_numeric_index_string(global_object, property_name.to_value(vm));
else
index = Value(property_name.as_number());
auto index = canonical_numeric_index_string(global_object, property_name);
// 5. If index is undefined, return undefined.
if (index.is_undefined())
return {};