If a C++ object already has a JS wrapper, we don't need to go through
the expensive type checks to figure out which kind of wrapper to create.
Instead, just return the wrapper we already have!
This gives a noticeable increase in smoothness on Acid3, where ~10% of
CPU time was previously spent doing RTTI type checks in wrap(). With
these changes, it's down to ~1%.
This helps make the overall codebase consistent. `class_name()` in
`Kernel` is always `StringView`, but not elsewhere.
Additionally, this results in the `strlen` (which needs to be done
when printing or other operations) always being computed at
compile-time.
It makes no sense to require passing a global object and doing a stack
space check in some cases where running out of stack is highly unlikely,
we can't recover from errors, and currently ignore the result anyway.
This is most commonly in constructors and when setting things up, rather
than regular function calls.
Right now the only functionality supported is getting/setting via JS
and resetting when browsing cross origin.
The HTML Specification (7.11 Browsing the web) also specifies how the
name should be restored from history entries, but we don't have those
yet.
This is a subtype of `DOM::HTMLCollection` that only holds
`HTMLOptionElement`s. In this stub implementation only `item`,
`namedItem` and `length`, inherited from HTMLCollection, are exposed.
This is good enough for applications that only read the collection.
This patch adds NodeIterator (created via Document.createNodeIterator())
which allows you to iterate through all the nodes in a subtree while
filtering with a provided NodeFilter callback along the way.
This first cut implements the full API, but does not yet handle nodes
being removed from the document while referenced by the iterator. That
will be done in a subsequent patch.
- Perform a typed this check
- Use the 'associated URL' as the source of truth
- Don't append default port number in the host getter
- Don't return default port number in the port getter
- Add empty checks to the hash and search getters instead of returning
'#' and '?' strings from the string builder
https://html.spec.whatwg.org/multipage/history.html#relevant-document
> A Location object has an associated relevant Document, which is this
> Location object's relevant global object's browsing context's active
> document, if this Location object's relevant global object's browsing
> context is non-null, and null otherwise.
This revealed a variety of issues, mostly missing origin checks,
conflating concepts like the 'associated URL', and serialization
(incorrect fallback values, string vs number, etc).
This commit fixes none of these issues, only adds FIXMEs.
Our setInterval implementation currently crashes on DuckDuckGo when it's
invoked with a string argument. In this path, we were creating a native
function to evaluate and execute that string. That evaluation was always
returning a Completion, but NativeFunction expects ThrowCompletionOr.
The conversion from Completion to ThrowCompletionOr would fail a VERIFY
because that conversion is only valid if the Completion is an error; but
we would trigger this conversion even on success.
This change re-implements setTimeout & setInterval in direct accordance
with the spec. So we avoid making that NativeFunction altogether, and
DDG can progress past its invocation to the timer. With this change, we
also have other features we did not previously support, such as passing
any number of arguments to the timers. This does not implement handling
of nesting levels yet.
Some callers, e.g. setTimeout / setInterval, will want to invoke this AO
with an arguments list retrieved from the JS VM (as opposed to invoking
it with a variadic list at the call site).
There were two things preventing this from working right:
- UIEvents::UIEvent::create() was actually just DOM::Event::create()
- We didn't return the right JavaScript wrapper type for UIEvent
Unlike all the other CSS properties, 'float' is special, and can only be
accessed via 'cssFloat' on CSSStyleDeclaration. So this patch adds
support for that. 1 point on ACID3! :^)
I can't imagine how this happened, but it seems we've managed to
conflate the "event listener" and "EventListener" concepts from the DOM
specification in some parts of the code.
We previously had two things:
- DOM::EventListener
- DOM::EventTarget::EventListenerRegistration
DOM::EventListener was roughly the "EventListener" IDL type,
and DOM::EventTarget::EventListenerRegistration was roughly the "event
listener" concept. However, they were used interchangeably (and
incorrectly!) in many places.
After this patch, we now have:
- DOM::IDLEventListener
- DOM::DOMEventListener
DOM::IDLEventListener is the "EventListener" IDL type,
and DOM::DOMEventListener is the "event listener" concept.
This patch also updates the addEventListener() and removeEventListener()
functions to follow the spec more closely, along with the "inner invoke"
function in our EventDispatcher.
The spec version of canonical_numeric_index_string is absurdly complex,
and ends up converting from a string to a number, and then back again
which is both slow and also requires a few allocations and a string
compare.
Instead this patch moves away from using Values to represent canonical
a canonical index. In most cases all we need to know is whether a
PropertyKey is an integer between 0 and 2^^32-2, which we already
compute when we construct a PropertyKey so the existing is_number()
check is sufficient.
The more expensive case is handling strings containing numbers that
don't roundtrip through string conversion. In most cases these turn
into regular string properties, but for TypedArray access these
property names are not treated as normal named properties.
TypedArrays treat these numeric properties as magic indexes that are
ignored on read and are not stored (but are evaluated) on assignment.
For that reason there's now a mode flag on canonical_numeric_index_string
so that only TypedArrays take the cost of the ToString round trip test.
In order to improve the performance of this path this patch includes
some early returns to avoid conversion in cases where we can quickly
know whether a property can round trip.
This reverts commit 3a184f7841.
This broke a number of test262 tests under "TypedArrayConstructors".
The issue is that the CanonicalNumericIndexString AO should not fail
for inputs like "1.1", despite them not being integral indices.
The spec version of canonical_numeric_index_string is absurdly complex,
and ends up converting from a string to a number, and then back again
which is both slow and also requires a few allocations and a string
compare.
Instead lets use the logic we already have as that is much more
efficient.
This improves performance of all non-numeric property names.
