We can only borrow JS<T> from rooted things, so it's safe to deref it.
The only types that provide mutable JS<T> things are MutHeap<JS<T>> and
MutNullableHeap<JS<T>>, which don't actually expose that they contain
JS<T> values.
added spec link for type mapping
Hi. added some of the spec links, that i could understand from the spec. Please mention if anything else needs to be added.
<!-- Reviewable:start -->
[<img src="https://reviewable.io/review_button.png" height=40 alt="Review on Reviewable"/>](https://reviewable.io/reviews/servo/servo/8031)
<!-- Reviewable:end -->
Fix uses of JS<T> as a type on the stack
`JS<T>` belongs on the heap, and only on the heap. This is a collection of fixes so that code uses either `Root<T>` or `&T` to pass around garbage-collected pointers.
Ideally, we could completely ban constructing a `JS<T>` outside of constructor functions, but we aren't quite there yet.
<!-- Reviewable:start -->
[<img src="https://reviewable.io/review_button.png" height=40 alt="Review on Reviewable"/>](https://reviewable.io/reviews/servo/servo/8026)
<!-- Reviewable:end -->
get() must always return a rooted value, because we have no way of
ensuring the value won't be invalidated. set() takes an &T because it's
convenient; there isn't any need to expose JS<T>.
Introduce DOMClass::heap_size_of
It holds a function pointer to the HeapSizeOf::heap_size_of_children()
implementation corresponding to that IDL interface.
This removes the need for a clumsly TypeId-based match expression in the
former heap_size_of_eventtarget() function.
<!-- Reviewable:start -->
[<img src="https://reviewable.io/review_button.png" height=40 alt="Review on Reviewable"/>](https://reviewable.io/reviews/servo/servo/7972)
<!-- Reviewable:end -->
It holds a function pointer to the HeapSizeOf::heap_size_of_children()
implementation corresponding to that IDL interface.
This removes the need for a clumsly TypeId-based match expression in the
former heap_size_of_eventtarget() function.
Don't generate useless InheritTypes interfaces
Interfaces with no descendant need neither a Base trait nor upcast functions, and interfaces with no ancestors neither a Derived trait nor downcast functions.
<!-- Reviewable:start -->
[<img src="https://reviewable.io/review_button.png" height=40 alt="Review on Reviewable"/>](https://reviewable.io/reviews/servo/servo/7735)
<!-- Reviewable:end -->
Interfaces with no descendant need neither a Base trait nor upcast functions,
and interfaces with no ancestors neither a Derived trait nor downcast functions.
Some interfaces like Node, CharacterData and HTMLTableCellElement are never
instantiated directly, only their descendant interfaces are. Those are marked
with [Abstract] to set their type_id to None instead of having dummy values
in the TypeId enums.
Combine script profiling with profile crates. Fixes#7514.
The script crate had its own built-in profiling which was basically doing the same thing as the profile crate. This wraps the internal profiling around the main profile functionality. Script-related tasks are now added to the ProfilerCategory enum.
<!-- Reviewable:start -->
[<img src="https://reviewable.io/review_button.png" height=40 alt="Review on Reviewable"/>](https://reviewable.io/reviews/servo/servo/7547)
<!-- Reviewable:end -->
After this pull request merged:
https://github.com/servo/servo/pull/7209
the 'script' component would never enter a 'built' state. In other
words, if one calls `mach build`, lets it complete, then calls `mach
build` again, the 'script' component would rebuild even though we
supposedly just built it. This was due to the `ParserResults.pkl`
getting placed in the `components/script` directory instead of the
output directory, causing cargo to think that there were unbuilt files.
Cleanup/refactor build scripts for DOM codegen
Prior to this commit, the script codegen makefile relied on an
intermediary pythonpath.py file that handled python dependencies and
incorporated a couple hacks to get the codegen building working. This
commit removes that intermediary file and attempts to make the script
codegen build process cleaner.
<!-- Reviewable:start -->
[<img src="https://reviewable.io/review_button.png" height=40 alt="Review on Reviewable"/>](https://reviewable.io/reviews/servo/servo/7209)
<!-- Reviewable:end -->
