It tries to serialize unquoted family names as a series of identifiers.
For family names which contain special white spaces like leading white
space, trailing white space, and consective white spaces, unquoted names
are marked quoted in parsing to avoid complicating serialization code.
In particular, every time that there's at least more than one identifier, switch
to quoted family name, since the reconstruction of the serialization will be
lossy anyway.
This allows us to avoid copies and all that.
What Chrome implements doesn't make much sense in the sense that they always
serialize:
font-family: "foo"; -> font-family: foo;
font-family: foo bar; -> font-family: "foo bar";
font-family: foo\ bar; -> font-family: "foo bar";
This patch makes us match on the second case, but not on the rest, because I
think Gecko's behavior is preferable in those cases.
Bug: 1434802
Reviewed-by: xidorn
MozReview-Commit-ID: JwBECA93lfi
Much like we optimize to_ascii_lowercase.
This also fixes a bug in Servo where attr() rules with an unknown namespace
prefix are parsed, which is wrong.
This more concrete wrapper type can write a prefix the very first time something
is written to it. This allows removing plenty of useless monomorphisations caused
by the former W/SequenceWriter<W> pair of types.
Servo currently uses `heapsize`, but Stylo/Gecko use `malloc_size_of`.
`malloc_size_of` is better -- it handles various cases that `heapsize` does not
-- so this patch changes Servo to use `malloc_size_of`.
This patch makes the following changes to the `malloc_size_of` crate.
- Adds `MallocSizeOf` trait implementations for numerous types, some built-in
(e.g. `VecDeque`), some external and Servo-only (e.g. `string_cache`).
- Makes `enclosing_size_of_op` optional, because vanilla jemalloc doesn't
support that operation.
- For `HashSet`/`HashMap`, falls back to a computed estimate when
`enclosing_size_of_op` isn't available.
- Adds an extern "C" `malloc_size_of` function that does the actual heap
measurement; this is based on the same functions from the `heapsize` crate.
This patch makes the following changes elsewhere.
- Converts all the uses of `heapsize` to instead use `malloc_size_of`.
- Disables the "heapsize"/"heap_size" feature for the external crates that
provide it.
- Removes the `HeapSizeOf` implementation from `hashglobe`.
- Adds `ignore` annotations to a few `Rc`/`Arc`, because `malloc_size_of`
doesn't derive those types, unlike `heapsize`.
