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to reflect the new license.
We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.
Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.
llvm-svn: 351636
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Summary:
Someone must be responsible for handling an Error. When formatv takes
ownership of an Error, the formatv_object destructor must take care of this.
Passing an error by value to formatv() is not considered explicit enough to mark
the error as handled (see D49013), so we require callers to use a format adapter
to confirm this intent.
Reviewers: zturner
Subscribers: llvm-commits, lhames
Differential Revision: https://reviews.llvm.org/D49170
llvm-svn: 336888
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Summary:
Error's new operator<< is the first way to print an error without consuming it.
formatv() can now print objects with an operator<< that works with raw_ostream.
Reviewers: bkramer
Subscribers: mgorny, llvm-commits
Differential Revision: https://reviews.llvm.org/D48966
llvm-svn: 336412
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The format string for formatv allows to specify a custom padding
character instead of the default space. This custom character was
parsed correctly, but not passed on to the formatter.
Patch by Marcel Köppe
Differential Revision: https://reviews.llvm.org/D48140
llvm-svn: 335915
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Looks like GCC didn't like the original specialization, try within namespace.
llvm-svn: 316361
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Summary:
Support formatting formatv_objects.
While here, fix documentation about member-formatters, and attempted
perfect-forwarding (I think).
Reviewers: zturner
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D38997
llvm-svn: 316330
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formatv_object currently uses the implicitly defined move constructor,
but it is buggy. In typical use-cases, the problem doesn't show-up
because all calls to the move constructor are elided. Thus, the buggy
constructors are never invoked.
The issue especially shows-up when code is compiled using the
-fno-elide-constructors compiler flag. For instance, this is useful when
attempting to collect accurate code coverage statistics.
The exact issue is the following:
The Parameters data member is correctly moved, thus making the
parameters occupy a new memory location in the target
object. Unfortunately, the default copying of the Adapters blindly
copies the vector of pointers, leaving each of these pointers
referencing the parameters in the original object instead of the copied
one. These pointers quickly become dangling when the original object is
deleted. This quickly leads to crashes.
The solution is to update the Adapters pointers when performing a move.
The copy constructor isn't useful for format objects and can thus be
deleted.
This resolves PR33388.
Differential Revision: https://reviews.llvm.org/D34463
llvm-svn: 310475
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Previously if you used fmt_align(7, Center) you would get the
output ' 7 '. It may be desirable for the user to specify
the fill character though, for example producing '---7---'. This
patch adds that.
llvm-svn: 305449
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clang-format (https://reviews.llvm.org/D33932) to keep primary headers
at the top and handle new utility headers like 'gmock' consistently with
other utility headers.
No other change was made. I did no manual edits, all of this is
clang-format.
This should allow other changes to have more clear and focused diffs,
and is especially motivated by moving some headers into more focused
libraries.
llvm-svn: 304786
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Summary:
This is achieved by generalizing the expression selecting the StringRef
format_provider. Now, anything that can be converted to a StringRef will
use it's formatter.
Reviewers: zturner
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D29898
llvm-svn: 295064
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Summary:
This replaces the format member search, which was quite complicated, with a more
direct approach to detecting whether a class should be formatted using the
format-member method. Instead we use a special type llvm::format_adapter, which
every adapter must inherit from. Then the search can be simply implemented with
the is_base_of type trait.
Aside from the simplification, I like this way more because it makes it more
explicit that you are supposed to use this type only for adapter-like
formattings, and the other approach (format_provider overloads) should be used
as a default (a mistake I made when first trying to use this library).
The only slight change in behaviour here is that now choose the format-adapter
branch even if the format member invocation will fail to compile (e.g. because it is a
non-const member function and we are passing a const adapter), whereas
previously we would have gone on to search for format_providers for the type.
However, I think that is actually a good thing, as it probably means the
programmer did something wrong.
Reviewers: zturner, inglorion
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D27679
llvm-svn: 289795
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I wanted to use the "not" keyword to make sure it does not get lost in between
other checks. MSVC does not like that.
llvm-svn: 289041
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Summary:
The existing detection of a format member function has a couple of deficiencies:
- the member function does not get detected if one calls formatv with an lvalue,
because the template parameter gets deduced as T&, which fails the is_class
check.
- it also did not work if the function was called with a const variable because
the template parameter would get deduced as const T&, again failing the
is_class check.
This fixes the problem by stripping the references in the uses_format_member
template, to make sure the type is correctly detected as class. It also provides
specializations of the has_FormatMember template for const and non-const members
of the types in order to enable declaring the format member as a "const"
function. I have added tests that verify that formatv can be now called in these
scenarios. As some scenarios could not be verified at runtime (e.g. making sure
that calling a non-const format member on a const object does *not* compile), I
have also added some static_asserts which test the behaviour of the template
classes used internally by formatv().
Reviewers: zturner
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D27525
llvm-svn: 289040
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This introduces a new type-safe general purpose formatting
library. It provides compile-time type safety, does not require
a format specifier (since the type is deduced), and provides
mechanisms for extending the format capability to user defined
types, and overriding the formatting behavior for existing types.
This patch additionally adds documentation for the API to the
LLVM programmer's manual.
Mailing List Thread:
http://lists.llvm.org/pipermail/llvm-dev/2016-October/105836.html
Differential Revision: https://reviews.llvm.org/D25587
llvm-svn: 286682
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