NullPrincipal::Create() (will null OA) may cause an OriginAttributes bypass.
We change Create() so OriginAttributes is no longer optional, and rename
Create() with no arguments to make it more explicit about what the caller is doing.
MozReview-Commit-ID: 7DQGlgh1tgJ
Currently static atoms are stored on the heap, but their char buffers are
stored in read-only static memory.
This patch changes the representation of nsStaticAtom (thus making it a
non-trivial subclass of nsAtom). Instead of a pointer to the string, it now has
an mStringOffset field which is a 32-bit offset to the string. (This requires
placement of the string and the atom within the same object so that the offset
is known to be small. The docs and macros in nsStaticAtom.h handle that.)
Static and dynamic atoms now store their chars in different ways: nsStaticAtom
stores them inline, nsDynamicAtom has a pointer to separate storage. So
`mString` and GetStringBuffer() move from nsAtom to nsDynamicAtom.
The change to static atoms means they can be made constexpr and stored in
read-only memory instead of on the heap. On 64-bit this reduces the per-process
overhead by 16 bytes; on 32-bit the saving is 12 bytes. (Further reductions
will be possible in follow-up patches.)
The increased use of constexpr required multiple workarounds for MSVC.
- Multiple uses of MOZ_{PUSH,POP}_DISABLE_INTEGRAL_CONSTANT_OVERFLOW_WARNING to
disable warnings about (well-defined!) overflow of unsigned integer
arithmetic.
- The use of -Zc:externConstexpr on all files defining static atoms, to make
MSVC follow the C++ standard(!) and let constexpr variables have external
linkage.
- The use of -constexpr:steps300000 to increase the number of operations
allowed in a constexpr value, in order to handle gGkAtoms, which requires
hashing ~2,500 atom strings.
The patch also changes how HTML5 atoms are handled. They are now treated as
dynamic atoms, i.e. we have "dynamic normal" atoms and "dynamic HTML5 atoms",
and "dynamic atoms" covers both cases, and both are represented via
nsDynamicAtom. The main difference between the two kinds is that dynamic HTML5
atoms still aren't allowed to be used in various operations, most notably
AddRef()/Release(). All this also required moving nsDynamicAtom into the header
file.
There is a slight performance cost to all these changes: now that nsStaticAtom
and nsDynamicAtom store their chars in different ways, a conditional branch is
required in the following functions: Equals(), GetUTF16String(),
WeakAtom::as_slice().
Finally, in about:memory the "explicit/atoms/static/atom-objects" value is no
longer needed, because that memory is static instead of heap-allocated.
MozReview-Commit-ID: 4AxPv05ngZy
Most of the noise is from the fact that clang-format on parser/html/*.{h,cpp}
reformatted all sorts of stuff. Not running it caused lots of format changes
from the generator... I guess we changed the format rules since the last time
this got run?
MozReview-Commit-ID: IA2G87zUIKN
The atoms in nsHTMLTags are a subset of nsGkAtoms, which means that
sTagAtomTable[] currently ends up holding duplicate pointers to the same static
atoms.
This patch removes sTagAtomTable[]. The only place that used sTagAtomTable[]
was nsHTMLTags::AddRefTable(). It now instead calls NS_GetStaticAtom() to get
the static atoms registered by nsGkAtoms.
The patch also moves some checking of sTagNames from RegisterAtoms() (which is
removed) to AddRefTable().
All this reduces the number of duplicate static atoms from 148 to 12.
MozReview-Commit-ID: 14qXYeoorFr
* * *
[mq]: foo
MozReview-Commit-ID: AgQbXlcvWrt
By removing the "Atom" suffix, which is redundant.
MozReview-Commit-ID: 4MCX9Icfjrw
--HG--
extra : rebase_source : c3c759a508a8938b59d36dbb20448d2964b98c91
This converts nsHTMLTags hashtables from PLHash to nsDataHashtable which
gives us both type safety and simpler code. Addtionally `gTagTable` now holds
a nsString instead of a raw char16_t pointer, this has the benefit of the
strings knowing their sizes allowing for more efficient comparisons. We avoid
heap allocations in the nsString by using `AssignLiteral` with the string from
the static string array.
--HG--
extra : rebase_source : 3ab6409de5e933beb868a0b371dff81e56df0810
Now that what we use to decide whether a document is styled by Servo are only
prefs and the doc principal, we don't need to inherit the style backend type,
since unless the pref has changed, the result will be the same.
MozReview-Commit-ID: KBmeBn1cRne
It would be convenient to get nsPresContext from nsIDocument.
MozReview-Commit-ID: Ei6V3UE8XGr
--HG--
extra : rebase_source : 8d2a917eb62cf341e4e1810451fd01c01dbc3bad
This macro is identical to NS_INTERFACE_MAP_END and encourages the
reader to think that there's something extra-special threadsafe about QI
implementations that use the macro, when in reality there's nothing of
the sort.
This patch was autogenerated by my decomponents.py
It covers almost every file with the extension js, jsm, html, py,
xhtml, or xul.
It removes blank lines after removed lines, when the removed lines are
preceded by either blank lines or the start of a new block. The "start
of a new block" is defined fairly hackily: either the line starts with
//, ends with */, ends with {, <![CDATA[, """ or '''. The first two
cover comments, the third one covers JS, the fourth covers JS embedded
in XUL, and the final two cover JS embedded in Python. This also
applies if the removed line was the first line of the file.
It covers the pattern matching cases like "var {classes: Cc,
interfaces: Ci, utils: Cu, results: Cr} = Components;". It'll remove
the entire thing if they are all either Ci, Cr, Cc or Cu, or it will
remove the appropriate ones and leave the residue behind. If there's
only one behind, then it will turn it into a normal, non-pattern
matching variable definition. (For instance, "const { classes: Cc,
Constructor: CC, interfaces: Ci, utils: Cu } = Components" becomes
"const CC = Components.Constructor".)
MozReview-Commit-ID: DeSHcClQ7cG
--HG--
extra : rebase_source : d9c41878036c1ef7766ef5e91a7005025bc1d72b
Adding <meta name="viewport" content="width=device-width"/> to the view-source
document achieves two things when used in a mobile browser, such as Fennec:
1. When word-wrapping is turned off, the page displays at a more readable
initial zoom level.
2. As of now, font inflation (when enabled) kicks in on the document when word-
wrapping is turned on, which leads to the line numbers appearing in a
noticeably smaller font size than the rest of the page.
Adding the above meta viewport header marks the document as "mobile-friendly"
and suppresses font inflation, which means that line numbers will appear
normally even with word-wrapping enabled.
getMathMLSelection() in browser-content.js isn't actually used in Fennec at the
moment, but for consistency we add the meta viewport tag there as well.
MozReview-Commit-ID: K9KVHh7g7TF
--HG--
extra : rebase_source : 1054f712f5420efcd89daeaa2c8c200129544b2a
Since we are dealing with the element (nodeInfo->LocalName() and NameAtom() are the same value),
we could use nodeInfo->NameAtom() instead.
MozReview-Commit-ID: 4vIBDEM1Nwv
--HG--
extra : rebase_source : 150d5ea982363eb2ef4c5039fae67be1e08884ba
Overridden virtual functions without override specifiers will become errors after gcc -Wsuggest-override warnings are enabled.
--HG--
extra : rebase_source : a4752e3ec7bd41563bc9b1fdd1b1829666744273
And stop suppressing -Wimplicit-fallthrough warnings. We no longer need to suppress these clang warnings because the generated parser code now includes MOZ_FALLTHROUGH annotations.
--HG--
extra : rebase_source : d766c9b17de878138df6d949ee720dfaf0ed370a
There is a single implementation, nsSAXAttributes, and all the methods are
unused... except for AddAttribute(), but that doesn't need to be declared in
XPIDL because it's only used within nsSAXAttributes.cpp.
--HG--
extra : rebase_source : 9bf10f76be0f9e6821e35885b96d125f76209c9b
This patch removes three methods that are no-ops (or missing) in all our
implementations.
--HG--
extra : rebase_source : e29b4cfbbc71d549744fcfd6481c449231316c1d
It's unused by any of our nsISAXXMLReader implementations.
The patch also removes nsSAXXMLReader::mEnableNamespacePrefixes, which is now
unused. And it removes test_namespace_support.js, which is all about testing
features.
--HG--
extra : rebase_source : 8da54379deedae9ef04fd1ab2169ab3760b13064
Because none of our nsISAXXMLReader implementations set `dtdHandler`,
`declarationHandler`, or `lexicalHandler`.
The patch also removes test_xml_declaration.js, because that test is all about
testing nsIMozSAXXMLDeclarationHandler.
--HG--
extra : rebase_source : f0380364fbaa435dd0e415fe7ca78b5aa0180336
It's a sub-class of nsAtom, useful for cases where you know you are dealing
exclusively with static atoms. The nice thing about it is that you can use
raw nsStaticAtom pointers instead of RefPtr<>. (In fact, the AddRef/Release
implementations ensure that we'll crash if we use RefPtr<nsStaticAtom>.)
MozReview-Commit-ID: 4Q6QHX5h44V
--HG--
extra : rebase_source : e4237f85b4821b684db0ef84d1f9c5e17cdee428
There are four things that must be provided for every static atom, two of which
have a macro:
- the atom pointer declaration (no macro);
- the atom pointer definition (no macro);
- the atom char buffer (NS_STATIC_ATOM_BUFFER);
- the StaticAtomSetup struct (NS_STATIC_ATOM_SETUP).
This patch introduces new macros for the first two things: NS_STATIC_ATOM_DECL
and NS_STATIC_ATOM_DEFN, and changes the arguments of the existing two macros
to make them easier to use (e.g. all the '##' concatenation now happens within
the macros).
One consequence of the change is that all static atoms must be within a class,
so the patch adds a couple of classes where necessary (DefaultAtoms, TSAtoms).
The patch also adds a big comment explaining how the macros are used, and what
their expansion looks like. This makes it a lot easier to understand how static
atoms work. Correspondingly, the patch removes some small comments scattered
around the macro use points.
MozReview-Commit-ID: wpRyrEOTHE
--HG--
extra : rebase_source : 9f85d477b4d06c9a9e710c757de1f1476edb6efe
Because it's the type we use to set up static atoms at startup, not the static
atom itself.
The patch accordingly renames some parameters, variables, and NS_STATIC_ATOM,
for consistency.
MozReview-Commit-ID: 1a0KvhYNNw2
--HG--
extra : rebase_source : 5c66e5b2dfe053a368bf3584d957198aec4cce91
Currently nsAtom::mString points to the interior of an nsStringBuffer. For
static atoms this requires the use of nsFakeStringBuffer, which is pretty
gross.
This patch changes things so that nsAtom::mString points to a static char
buffer for static atoms. This simplifies a number of things:
- nsFakeStringBuffer and CheckStaticAtomSizes are no longer needed.
- FakeBufferRefCountHelper is no longer needed.
- nsAtom's constructor for static atoms is simpler.
- RegisterStaticAtoms() is simpler.
On the flip-side, a couple of things get more complicated.
- nsAtom::ToString() treats static and dynamic atoms differently.
- nsAtom::GetStringBuffer() is now only valid for dynamic atoms. This
function is only used in two places, both involving DOMString, so those
locations are updated appropriately. This also requires updating some other
code assigning nsStrings to DOMStrings, because we can't assume that
nsStrings are shared.
On Linux64 this change reduces the size of the binary by 8752 B, and moves
81968 B from the .data to the .rodata section, where it can be shared between
processes.
--HG--
extra : rebase_source : 0f6fcdec1c525aa66222e208b66a9f9026f69bcb
(Path is actually r=froydnj.)
Bug 1400459 devirtualized nsIAtom so that it is no longer a subclass of
nsISupports. This means that nsAtom is now a better name for it than nsIAtom.
MozReview-Commit-ID: 91U22X2NydP
--HG--
rename : xpcom/ds/nsIAtom.h => xpcom/ds/nsAtom.h
extra : rebase_source : ac3e904a21b8b48e74534fff964f1623ee937c67
This patch merges nsAtom into nsIAtom. For the moment, both names can be used
interchangeably due to a typedef. The patch also devirtualizes nsIAtom, by
making it not inherit from nsISupports, removing NS_DECL_NSIATOM, and dropping
the use of NS_IMETHOD_. It also removes nsIAtom's IIDs.
These changes trigger knock-on changes throughout the codebase, changing the
types of lots of things as follows.
- nsCOMPtr<nsIAtom> --> RefPtr<nsIAtom>
- nsCOMArray<nsIAtom> --> nsTArray<RefPtr<nsIAtom>>
- Count() --> Length()
- ObjectAt() --> ElementAt()
- AppendObject() --> AppendElement()
- RemoveObjectAt() --> RemoveElementAt()
- ns*Hashtable<nsISupportsHashKey, ...> -->
ns*Hashtable<nsRefPtrHashKey<nsIAtom>, ...>
- nsInterfaceHashtable<T, nsIAtom> --> nsRefPtrHashtable<T, nsIAtom>
- This requires adding a Get() method to nsRefPtrHashtable that it lacks but
nsInterfaceHashtable has.
- nsCOMPtr<nsIMutableArray> --> nsTArray<RefPtr<nsIAtom>>
- nsArrayBase::Create() --> nsTArray()
- GetLength() --> Length()
- do_QueryElementAt() --> operator[]
The patch also has some changes to Rust code that manipulates nsIAtom.
MozReview-Commit-ID: DykOl8aEnUJ
--HG--
extra : rebase_source : 254404e318e94b4c93ec8d4081ff0f0fda8aa7d1
nsHtml5Atoms are very similar to dynamic nsAtoms. This patch removes the former
in favour of the latter, which leaves nsAtom as the only subclass of nsIAtom.
nsAtom::mKind is still used to distinguish dynamic atoms from HTML5 atoms, and
the HTML5 parser still uses manual memory management to handle its HTML5 atoms.
nsHtml5AtomEntry::mAtom had to be changed from an nsAutoPtr to a raw pointer
because nsAtom's destructor is private.
MozReview-Commit-ID: 1pBzwkog3ut
--HG--
extra : rebase_source : fbb819e527cb30606348da9ce3eede62e00fb936
The HTML group constants in nsElementTable.cpp are only used for
nsHTMLElement::IsBlock(). This patch removes them and replaces
HTMLElement::mParentBits with a bool, mIsBlock.
The patch also inverts the sense of HTMLElement::mLeaf and renames it
mIsContainer, to match the sense of IsContainer().
Finally, the patch uses the pre-processor to use '____' instead of 'false' in
gHTMLElements. This makes it easier to read.
Note that IsBlock() has numerous disagreements with
https://developer.mozilla.org/en-US/docs/Web/HTML/Block-level_elements about
what constitutes a block element, but I have preserved the existing behaviour.
--HG--
extra : rebase_source : ff5ab71fdb2665fda296c0fbb712641151a7b003
The NS_LITERAL_STRING macro creates a temporary nsLiteralString to encapsulate the char16_t string literal and its length, but AssignLiteral() can determine the char16_t string literal's length at compile-time without nsLiteralString.
MozReview-Commit-ID: H9I6vNDMdIr
--HG--
extra : rebase_source : cf537a1f65af003c6c4f8919b925b0f305c1dd4d
extra : source : 13b89ce4e6a66c840f82a335c71f5a12938aba22
XPCOM's string API doesn't have the notion of a "null string". But it does have
the notion of a "void string" (or "voided string"), and that's what these
functions are returning. So the names should reflect that.
--HG--
extra : rebase_source : 4e3f982e0873877174a08a25413595ff66f7d20e
This patch splits out most of nsHTMLElement into a new type HTMLElement within
nsElementTable.cpp. Only the static methods IsContainer() and IsBlock() need to
remain exposed via nsHTMLElement. The patch moves TestBits() into
nsElementTable.cpp as well.
--HG--
extra : rebase_source : ca19d9e3af1f4b1f352af82f985190744c4b715b
It a stateless wrapper around static methods in nsHTMLTags and nsHTMLElement,
and hence an unnecessary layer of indirection that just adds complexity and
slowness. This patch removes it, cutting almost 300 lines of code.
This requires making nsElementTable.h an exported header, to expose the
nsHTMLElement methods.
--HG--
extra : rebase_source : abbcb8e5001389affbf717092213b898673db07f
When triggering an iframe load or starting to parse a document for an iframe, the main thread may often have some time before the new page has been created. Try to trigger CC/GC slice at such point in order to avoid collector later when page is already executing its JS
--HG--
extra : rebase_source : 806df0af1dbaefb1761134eca0bb7c6ade6ac1a9
The patch uses the nsParserService method names (minus the "HTML" prefix)
because they are more descriptive. This will make it easier to replace
nsParserService method calls with nsHTMLTags method calls.
The patch also adds nsHTMLTags::AtomTagToId(), to match up with
nsParserService::HTMLAtomTagToId().
--HG--
extra : rebase_source : 278c53a0787a928de9477dd30a5fd037791d7990
Replace it with NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION, because it
has been the same for a while.
MozReview-Commit-ID: 5agRGFyUry1
--HG--
extra : rebase_source : 5388c56b2f6905c6ef969150f0c5b77bf247624d
This patch does the following.
- Uses a macro to make gHTMLElements[] much more concise.
- Makes nsHTMLElement::mTagID a debug-only field, because it's only used in
assertions.
--HG--
extra : rebase_source : 8f3acb2d95820cd55e2e6d44f84fca689f468430
They're unused. This also means nsHTMLTags::Get{Atom,StringValue}() can be
removed.
--HG--
extra : rebase_source : f6538fe409c1a3bb22e5bc901c2ead37dd4f7eb0
Per mixed-content-blocked spec, [1], <img srcset> and <picture> should
be blocked. However we still fetch <img srcset> and <picture> in image
preload, because they are fetched with contentPolicyType
TYPE_INTERNAL_IMAGE_PRELOAD and won't be rejected by nsMixedContentBlocker.cpp.
So I updated the image preloading code, and use the type TYPE_IMAGESET
if the image request is for <picture> or <img srcset>, otherwise for
normal image load we still use TYPE_INTERNAL_IMAGE_PRELOAD.
[1]: https://w3c.github.io/webappsec-mixed-content/#should-block-fetch
4. Return allowed if one or more of the following conditions are met:
request’s type is "image", and initiator is not "imageset".
5. Return blocked.
This is straightforward, with only two notable things.
- `#include "nsXPIDLString.h" is replaced with `#include "nsString.h"`
throughout, because all nsXPIDLString.h did was include nsString.h. The
exception is for files which already include nsString.h, in which case the
patch just removes the nsXPIDLString.h inclusion.
- The patch removes the |xpidl_string| gtest, but improves the |voided| test to
cover some of its ground, e.g. testing Adopt(nullptr).
--HG--
extra : rebase_source : 452cc4a08046a1adb1a8099a7e85a1917de5add8
We should not be declaring forward declarations for nsString classes directly,
instead we should use nsStringFwd.h. This will make changing the underlying
types easier.
--HG--
extra : rebase_source : b2c7554e8632f078167ff2f609392e63a136c299
When preloading style link in <head>, we used speculative referrer policy which is
delievered from meta tag and ignored the referrerpolicy attribute.
We should use referrerpolicy attribute with the higher priority
MozReview-Commit-ID: 1rQmBV01jvV
Our current machinery for enabling stylo requires a docshell - if there isn't
one, we default to the Gecko style system.
When getComputedStyle operates on an element without a presshell, it uses the
caller's presshell instead. If the element has previously been styled with
one style system (but no longer has a presshell), and the caller uses a
different style backend, using the caller's style system can cause crashes when
we pull bits of cached data off the DOM (like cached style attributes).
So we want to throw when window.getComputedStyle(element) is called for a
(window, element) pair with different style backends (which is what the next
patch in this bug does).
However, that causes a few failures where stylo-backed documents try to do
getComputedStyle on an XHR document (which, without a docshell, will use the
gecko style system).
So this patch does some work to propagate the creator's style backend into
various docshell-less documents. This should allow both chrome (which uses gecko)
and content (which uses stylo) to use getComputedStyle on the response document
for XHRs they create.
Note that the second patch in this bug will make
chromeWin.getComputedStyle(contentObj) throw. If we discover code that does
that, we can just make it invoke the content's getComputedStyle method over Xrays.
MozReview-Commit-ID: 5OsmHJKq5Ui
This patch is mainly to make IdleTaskRunner reusable by nsHtml5TreeOpExecutor.
The only necessary work to that purpose is to remove the dependency of
sShuttingDown, which was a static variable in nsJSEnvironment.cpp.
The idea is to have a "MayStopProcessing" as a callback for the consumer to
return sShuttingDown.
In addition to sShuttingDown, we use std::function<bool()> as the runner
main callback type.
MozReview-Commit-ID: FT2X1unSvPS
--HG--
extra : rebase_source : 3fe2d4f597f53e9a90f3dc8d5009df04240534ba
extra : intermediate-source : 41f6715c344ce26f7820cecb2544db8c50dca796
extra : source : 042f10937305e34245bdaf75dcb816db7738254e
This removes about 2/3 of the occurrences of nsXPIDLString in the tree. The
places where nsXPIDLStrings are null-checked are replaced with |rv| checks.
The patch also removes a couple of unused declarations from
nsIStringBundle.idl.
Note that nsStringBundle::GetStringFromNameHelper() was merged into
GetStringFromName(), because they both would have had the same signature.
--HG--
extra : rebase_source : ac40bc31c2a4997f2db0bd5069cc008757a2df6d
I've been having problems with interdiffs on mozreview lately, so for
ease of review, this patch is being submitted as a seperate patch for
review. Once it is r+'d, it will be folded into the first patch in
this set before landing.
MozReview-Commit-ID: CS9MngaXlBd
--HG--
extra : rebase_source : 6a86fd4f7a66e73497a756976a2562d183002a2a
Removes applet tag interfaces, and changes HTML5 parser to output
HTMLUnknownElement when tag is found. Removes tag process from various
places in the browser.
MozReview-Commit-ID: 2zHhK2U2esX
--HG--
extra : rebase_source : d06ecaffd1cb656301e29b900bafde4c68a4606e
We have a minimum requirement of VS 2015 for Windows builds, which supports
the z length modifier for format specifiers. So we don't need SizePrintfMacros.h
any more, and can just use %zu and friends directly everywhere.
MozReview-Commit-ID: 6s78RvPFMzv
--HG--
extra : rebase_source : 009ea39eb4dac1c927aa03e4f97d8ab673de8a0e
Most of the names passed to nsIStringBundle::{Get,Format}StringFromUTF8Name
have one of the two following forms:
- a 16-bit C string literal, which is then converted to an 8-bit string in
order for the lookup to occur;
- an 8-bit C string literal converted to a 16-bit string, which is then
converted back to an 8-bit string in order for the lookup to occur.
This patch introduces and uses alternative methods that can take an 8-bit C
string literal, which requires changing some signatures in other methods and
functions. It replaces all C++ uses of the old methods.
The patch also changes the existing {Get,Format}StringFromName() methods so
they take an AUTF8String argument for the name instead of a wstring, because
that's nicer for JS code.
Even though there is a method for C++ code and a different one for JS code,
|binaryname| is used so that the existing method names can be used for the
common case in both languages.
The change reduces the number of NS_ConvertUTF8toUTF16 and
NS_ConvertUTF16toUTF8 conversions while running Speedometer v2 from ~270,000 to
~160,000. (Most of these conversions involved the string
"deprecatedReferrerDirective" in nsCSPParser.cpp.)
--HG--
extra : rebase_source : 3bee57a501035f76a81230d95186f8c3f460ff8e
It's unused except in test code (nsTestEntityTable). The patch removes that
test code, which also removes testing for UnicodeToEntity conversion, but the
test code wasn't being run anyway so it's no great loss.
(UnicodeToEntity conversion is still used by
nsHTMLContentSerializer::AppendAndTranslateEntities().)
It's silly to use prmem.h within Firefox code given that in our configuration
its functions are just wrappers for malloc() et al. (Indeed, in some places we
mix PR_Malloc() with free(), or malloc() with PR_Free().)
This patch removes all uses, except for the places where we need to use
PR_Free() to free something allocated by another NSPR function; in those cases
I've added a comment explaining which function did the allocation.
--HG--
extra : rebase_source : 0f781bca68b5bf3c4c191e09e277dfc8becffa09
