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LibJS: Update spec comments testing presence of a field

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This is an editorial change in the ECMA-262 spec.

See:
- 497f99a
- 0b35749
This commit is contained in:
Linus Groh 2022-05-01 00:47:55 +02:00
parent d33fcad87f
commit cb66474fb5
4 changed files with 20 additions and 20 deletions
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12
Userland/Libraries/LibJS/Runtime/AbstractOperations.cpp
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@ -284,11 +284,11 @@ bool validate_and_apply_property_descriptor(Object* object, PropertyKey const& p
// 5. If current.[[Configurable]] is false, then
if (!*current->configurable) {
// a. If Desc.[[Configurable]] is present and its value is true, return false.
// a. If Desc has a [[Configurable]] field and Desc.[[Configurable]] is true, return false.
if (descriptor.configurable.has_value() && *descriptor.configurable)
return false;
// b. If Desc.[[Enumerable]] is present and ! SameValue(Desc.[[Enumerable]], current.[[Enumerable]]) is false, return false.
// b. If Desc has an [[Enumerable]] field and ! SameValue(Desc.[[Enumerable]], current.[[Enumerable]]) is false, return false.
if (descriptor.enumerable.has_value() && *descriptor.enumerable != *current->enumerable)
return false;
@ -298,22 +298,22 @@ bool validate_and_apply_property_descriptor(Object* object, PropertyKey const& p
// d. If ! IsAccessorDescriptor(Desc) is true, then
if (descriptor.is_accessor_descriptor()) {
// i. If Desc.[[Get]] is present and ! SameValue(Desc.[[Get]], current.[[Get]]) is false, return false.
// i. If Desc has a [[Get]] field and ! SameValue(Desc.[[Get]], current.[[Get]]) is false, return false.
if (descriptor.get.has_value() && *descriptor.get != *current->get)
return false;
// ii. If Desc.[[Set]] is present and ! SameValue(Desc.[[Set]], current.[[Set]]) is false, return false.
// ii. If Desc has a [[Set]] field and ! SameValue(Desc.[[Set]], current.[[Set]]) is false, return false.
if (descriptor.set.has_value() && *descriptor.set != *current->set)
return false;
}
// e. Else if current.[[Writable]] is false, then
// FIXME: `current` is not guaranteed to be a data descriptor at this point and may not have a [[Writable]] field (see https://github.com/tc39/ecma262/issues/2761)
else if (current->is_data_descriptor() && !*current->writable) {
// i. If Desc.[[Writable]] is present and Desc.[[Writable]] is true, return false.
// i. If Desc has a [[Writable]] field and Desc.[[Writable]] is true, return false.
if (descriptor.writable.has_value() && *descriptor.writable)
return false;
// ii. If Desc.[[Value]] is present and ! SameValue(Desc.[[Value]], current.[[Value]]) is false, return false.
// ii. If Desc has a [[Value]] field and ! SameValue(Desc.[[Value]], current.[[Value]]) is false, return false.
if (descriptor.value.has_value() && (*descriptor.value != *current->value))
return false;
}