Add new methods "subView" to O(U)String to return substring views
of the underlying data.
Add a clang plugin to warn when replacing existing calls to copy()
would be better to use subView().
Change-Id: I03a5732431ce60808946f2ce2c923b22845689ca
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/105420
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
...from which an OString can cheaply be instantiated.
The one downside is that OStringLiteral now needs to be a template abstracting
over the string length. But any uses for which that is a problem (e.g., as the
element type of a containers that would no longer be homogeneous, or in the
signature of a function that shall not be turned into a template for one reason
or another) can be replaced with std::string_view, without loss of efficiency
compared to the original OStringLiteral, and without loss of expressivity (esp.
with the newly introduced OString(std::string_view) ctor).
The new OStringLiteral ctor code would probably not be very efficient if it were
ever executed at runtime, but it is intended to be only executed at compile
time. Where available, C++20 "consteval" is used to statically ensure that.
The intended use of the new OStringLiteral is in all cases where an
object that shall itself not be an OString (e.g., because it shall be a
global static variable for which the OString ctor/dtor would be detrimental at
library load/unload) must be converted to an OString instance in at least one
place. Other string literal abstractions could use std::string_view (or just
plain char const[N]), but interestingly OStringLiteral might be more efficient
than constexpr std::string_view even for such cases, as it should not need any
relocations at library load time. For now, no existing uses of OUStringLiteral
have been changed to some other abstraction (unless technically necessary as
discussed above), and no additional places that would benefit from
OUStringLiteral have been changed to use it.
sal/qa/rtl/strings/test_ostring_concat.cxx documents some workarounds for GCC
bug <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96878> "Failed class template
argument deduction in unevaluated, parenthesized context". Those places, as
well as uses of OStringLiteral in incodemaker/source/javamaker/javaoptions.cxx
and i18npool/source/breakiterator/breakiterator_unicode.cxx, which have been
replaced with OString::Concat (and which is arguably a better choice, anyway),
also caused failures with at least Clang 5.0.2 (but would not have caused
failures with at least recent Clang 12 trunk, so appear to be bugs in Clang that
have meanwhile been fixed).
This change also revealed a bug in at least recent Clang 12 trunk
CastExpr::getSubExprAsWritten (still to be reported to LLVM), triggered at least
in some calls from loplugin code (for which it can be fixed for now in the
existing compat::getSubStringAsWritten).
A similar commit for OUStringLiteral is planned, too.
Change-Id: Ib192f4ed4c44769512a16364cb55c25627bae6f4
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/101814
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
O[U]StringView had an odd mixture of uses. For one, it was used like
std::[u16]string_view, for which directly using the latter std types is clearly
the better alternative. For another, it was used in concatenation sequences,
when neither of the two leading terms were of our rtl string-related types.
For that second use case introduce O[U]String::Concat (as std::[u16]string_view
can obviously not be used, those not being one of our rtl string-related types).
Also, O[U]StringLiteral is occasionally used for this, but the planned changes
outlined in the 33ecd0d5c4 "Change OUStringLiteral
from char[] to char16_t[]" commit message will make that no longer work, so
O[U]String::Concat will be the preferred solution in such use cases going
forward, too.
O[U]StringView was also occasionally used to include O[U]StringBuffer values in
concatenation sequences, for which a more obvious alternative is to make
O[U]StringBuffer participate directly in the ToStringHelper/O[U]StringConcat
machinery.
Change-Id: I1f0e8d836796c9ae01c45f32c518be5f52976622
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/101586
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
if one side of the expression is a compile-time-constant, we don't need
to worry about side-effects on the other side
Change-Id: Iee71ea51b327ef244bf39f128f921ac325d74e2b
Reviewed-on: https://gerrit.libreoffice.org/81589
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
which defeat the *StringConcat optimisation.
Also make StringConcat conversions treat a nullptr as an empty string,
to match the O*String(char*) constructors.
Change-Id: If45f5b4b6a535c97bfeeacd9ec472a7603a52e5b
Reviewed-on: https://gerrit.libreoffice.org/80724
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
These helpers are used in code generator code; so any invalid UTF-8
or UTF-16 in the conversion is programmer's error which needs fixing.
Thus, the behavior of toUtf8/fromUtf8 which asserts the validity is
fine here.
Change-Id: I3004e233c9de59f8e348455f1f04d23e8c51ed3d
Reviewed-on: https://gerrit.libreoffice.org/70249
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>
comment from sberg:
aren't these changes broken in general, when the called function
may throw an exception before it takes ownership of the passed-in pointer?
So revert, except for
(a) PlainTextFilterDetect::detect, which was definitely a leak
(b) SwCursor::FindAll, where unique_ptr was being unnecessarily used
This reverts commit 7764ae70b0.
Change-Id: I555e651b44e245b031729013d2ce88d26e8a357e
Reviewed-on: https://gerrit.libreoffice.org/60301
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
Tested-by: Noel Grandin <noel.grandin@collabora.co.uk>
most of these changes just make the change of ownership when using
std::unique_ptr clearer, but there is one definite leak fix in
PlainTextFilterDetect::detect
Change-Id: I8282a68007222a4fee84004f394bde0cca8569e9
Reviewed-on: https://gerrit.libreoffice.org/60159
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
Tested-by: Noel Grandin <noel.grandin@collabora.co.uk>
The types 'long' and 'unsigned long' are different sizes on different
platforms, making them wholy unsuitable for portable code.
And when I mean different sizes, I mean 64bit Linux and 64bit Windows
have different bit sizes.
Change-Id: Id4d8cd709bf71a3f85ed6515fae2b0a21ae8c25d
Reviewed-on: https://gerrit.libreoffice.org/41130
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
just the simple and obvious case for now, of a local var being allocated
and deleted inside a single local block, and the delete happening at the
end of the block
Change-Id: I3a7a094da543debdcd2374737c2ecff91d644625
Reviewed-on: https://gerrit.libreoffice.org/33749
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
...(for now, from LIBO_INTERNAL_CODE only). See the mail thread starting at
<https://lists.freedesktop.org/archives/libreoffice/2017-January/076665.html>
"Dynamic Exception Specifications" for details.
Most changes have been done automatically by the rewriting loplugin:dynexcspec
(after enabling the rewriting mode, to be committed shortly). The way it only
removes exception specs from declarations if it also sees a definition, it
identified some dead declarations-w/o-definitions (that have been removed
manually) and some cases where a definition appeared in multiple include files
(which have also been cleaned up manually). There's also been cases of macro
paramters (that were used to abstract over exception specs) that have become
unused now (and been removed).
Furthermore, some code needed to be cleaned up manually
(avmedia/source/quicktime/ and connectivity/source/drivers/kab/), as I had no
configurations available that would actually build that code. Missing @throws
documentation has not been applied in such manual clean-up.
Change-Id: I3408691256c9b0c12bc5332de976743626e13960
Reviewed-on: https://gerrit.libreoffice.org/33574
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
...as
OStringBuffer b("foo"); b = "bar" + b;
doesn't work as one might expect (see the mail thread starting at
<https://lists.freedesktop.org/archives/libreoffice/2016-October/075464.html>
"concat of OUStringBuffer". That feature was LIBO_INTERNAL_ONLY, anyway. And
of the affected places, MethodDescriptor::getSignature
(codemaker/source/javamaker/javatype.cxx) was the only one that would actually
have benefitted.
Change-Id: Ib84266f43e40c42c2e428f0c0616db8cfa90adff
The issue of 362d4f0cd4 "Explicitly mark
overriding destructors as 'virtual'" appears to no longer be a problem with
MSVC 2013.
(The little change in the rewriting code of compilerplugins/clang/override.cxx
was necessary to prevent an endless loop when adding "override" to
OOO_DLLPUBLIC_CHARTTOOLS virtual ~CloseableLifeTimeManager();
in chart2/source/inc/LifeTime.hxx, getting stuck in the leading
OOO_DLLPUBLIC_CHARTTOOLS macro. Can't remember what that
isAtEndOfImmediateMacroExpansion thing was originally necessary for, anyway.)
Change-Id: I534c634504d7216b9bb632c2775c04eaf27e927e
...where the first component of the pair returned by the iterator would be
const, so an implicit conversion would be required.
Change-Id: I62b6ddd799261e1dd63ea5c42a85d8b071f8b8b7
...which (in LIBO_INTERNAL_ONLY) for Clang expands to [[clang::fallthrough]] in
preparation of enabling -Wimplicit-fallthrough. (This is only relevant for
C++11, as neither C nor old C++ has a way to annotate intended fallthroughs.)
Could use BOOST_FALLTHROUGH instead of introducing our own SAL_FALLTHROUGH, but
that would require adding back in dependencies on boost_headers to many
libraries where we carefully removed any remaining Boost dependencies only
recently. (At least make SAL_FALLTHROUGH strictly LIBO_INTERNAL_ONLY, so its
future evolution will not have any impact on the stable URE interface.) C++17
will have a proper [[fallthroug]], eventually removing the need for a macro
altogether.
Change-Id: I342a7610a107db7d7a344ea9cbddfd9714d7e9ca
Caolán McNamara