Previously if the IDL was something like:
```
constructor(optional DOMString data = "");
```
We were generating code that would be passing through to the constructor
an Optional<String> - even though for this situation it is not possible
for it to be null.
Instead, if we know if there is a default value that is non-null and the
type is not nullish, just generate the cpp code as a String.
This change allows IDL interfaces to be compiled using new AK String
which have a attribute in the interface that may return null.
Without this change we would run into a compile error from code such as
the following example:
```
auto retval = impl->deprecated_attribute(HTML::AttributeNames::ref);
if (!retval.has_value()) {
return JS::js_null();
}
return JS::PrimitiveString::create(vm, retval.release_value());
```
As `deprecated_attribute` returns a `DeprecatedString` instead of an
`Optional<String>`. Fix that by using the non-deprecated attribute
implementation, and falling back to the empty string for where we cannot
return null.
Also add a test here to cover a regression I almost introduced here
which was not previously covered by our test suite.
Ideally, all of this should actually just be calling
Element::get_attribute_value, but I'm not entirely sure at this stage
what the behavioral change would be to test for here. Since this
implementation preserves the previous behavior, stick with it, and add a
FIXME for now.
This should allow us to add a Element::attribute which returns an
Optional<String>. Eventually all callers should be ported to switch from
the DeprecatedString version, but in the meantime, this should allow us
to port some more IDL interfaces away from DeprecatedString.
NewAKString is effectively the default for any new IDL interface, so
let's mark this as the default behavior. It also makes it much easier to
figure out whatever interfaces are still left to port over to new AK
String.
This event is the star of the show, and the main way that web content
can react to either programmatic or user-initiated navigation.
All of the fun algorithms will have to come later though.
Add some checks to the statement wrapping code to make sure we properly
handle the expected pattern of returning ``Optional<Enum>`` from
nullable enum properties.
This interface is used in the interface for HTMLFormControlsCollection
as a live view over its matching elements.
Currently the "value" attribute for this interface is left
unimplemented.
Stop worrying about tiny OOMs. Work towards #20449.
While going through these, I also changed the function signature in many
places where returning ThrowCompletionOr<T> is no longer necessary.
This object is available as `window.internals` (or just `internals`) and
is only accessible while running in "test mode".
This first version only has one API: gc(), which triggers a garbage
collection immediately.
In the future, we can add more APIs here to help us test parts of the
engine that are hard or impossible to reach via public web APIs.
Rework the write_if_changed logic to properly truncate the output file.
The original logic would not truncate the file, leading to extra junk
at the end of files if the IDL files shrunk between builds.
3dd3120a8a changed open mode from Write to
ReadWrite, which stopped truncating files.
This could be noticed by building a slightly older branch, as compiling
it gave compile errors.
This reduces the number of tasks to schedule, and the complexity of the
build system integrations for the BindingsGenerator. As a bonus, we move
the "only write if changed" feature into the generator to reduce the
build system load on generated files for this generator.
Rather than splitting the Iterator type and its AOs into two files,
let's combine them into one file to match every other JS runtime object
that we have.
This is an editorial change in the ECMA-262 spec. See:
956e5af
This splits the GetIterator AO into two AOs, to remove some recursion
and to (soon) remove optional parameters.
This commit makes it possible to let properties accept easing functions
as values, which will be used in a later commit to implement
animation-timing-function.
The main missing features are rootMargin, proper nested browsing
context support and content clip/clip-path support.
This makes images appear on some sites, such as YouTube and
howstuffworks.com.
