This makes error messages more useful during debugging.
Old:
START Running test compare_views
FAIL: ../AK/Tests/TestStringView.cpp:59: EXPECT_EQ(view1, "foobar") failed
New:
START Running test compare_views
FAIL: ../AK/Tests/TestStringView.cpp:59: EXPECT_EQ(view1, "foobar") failed: LHS="foo", RHS="foobar"
Previously, it would just print something with 'FAIL' to stderr which
would be picked up by CTest. However, some code assumes that
ASSERT_NOT_REACHED() doesn't return, for example:
bool foo(int value) {
switch(value) {
case 0:
return true;
case 1:
return false;
default:
ASSERT_NOT_REACHED();
}
// warning: control reaches end of non-void function
}
Thankfully, this hasn't happened in any other code yet, but it happened
while I was trying something out. Using '==' on two ByteBuffers to check
whether they're equal seemed straight-forward, so I ran into the trap.
This seems to be because ByteBuffer implements 'operator bool', and C++
considers bool to be an integer type. Thus, when trying to find a way to
evaluate '==', it attempts integer promotion, which in turn finds 'operator bool'.
This explains why all non-empty buffers seem to be equal, but different from the
empty one. Also, why comparison seems to be implemented.
clang-format automatically sorts include statements that are in a
'block'. Adding a whitespace prevents this. It is crutial that
<AK/TestSuite.h> is included first because it redefines some macros.
Previously, the implementation would produce one Vector<u8> which
would contain the whole decompressed data. That can be a lot and
even exhaust memory.
With these changes it is still necessary to store the whole input data
in one piece (I am working on this next,) but the output can be read
block by block. (That's not optimal either because blocks can be
arbitrarily large, but it's good for now.)
This class is similar to BufferStream because it is possible to both
read and write to it. However, it differs in the following ways:
- DuplexMemoryStream keeps a history of 64KiB and discards the rest,
BufferStream always keeps everything around.
- DuplexMemoryStream tracks reading and writing seperately, the
following is valid:
DuplexMemoryStream stream;
stream << 42;
int value;
stream >> value;
For BufferStream it would read:
BufferStream stream;
stream << 42;
int value;
stream.seek(0);
stream >> value;
In the future I would like to replace all usages of BufferStream with
InputMemoryStream, OutputMemoryStream (doesn't exist yet) and
DuplexMemoryStream. For now I just add DuplexMemoryStream though.
Fatal errors can not be handeled and lead to an assertion error when the
stream is destroyed. It makes no sense to delay the assertion failure,
instead of setting m_fatal, an assertion should be done directly.
Two changes were made
1. copy_to() and copy_trimmed_to() now return how many bytes were
copied.
2. The argument was changed to Span<typename RemoveConst<T>::Type>
because the following would not work:
ReadonlyBytes bytes0;
Bytes bytes1;
// Won't work because this calls Span<const u8>::copy_to(Span<u8>)
// but the method was defined as Span<const u8>::copy_to(Span<const u8>)
bytes0.copy_to(bytes1);
The Coverity compiler doesn't support C++2a yet, and thus doesn't
even recognize concept keywords. To allow serenity to be built and
analyzed on such compilers, add a fallback underdef to perform
the same template restriction based on AK::EnableIf<..> meta
programming.
Note: Coverity does seem to (annoyingly) define __cpp_concepts, even
though it doesn't support them, so we need to further check for
__COVERITY__ explicitly.
Windows uses "KB", "MB", "GB" as powers of two.
macOS uses "kB", "MB", "GB" as powers of ten.
"k", "M", "G" are standard SI prefixes that normally refer to powers of
ten.
The IEC introduced "KiB", "MiB", "GiB" to unambiguously refer to
powers of two. It admittedly hasn't caught on that much, but it
does have the advantage that it's unabigious what it means.
So let's use it for user-visible sizes in SerenityOS.
(Linux does all of the above in different places, depending on app and
toolkit.)
Let's use the one in AK/NumberFormat.h everywhere.
It has slightly different behavior than some of the copies this
removes, but it's probably nice to have uniform human readable
size outputs across the system.
The SI prefixes "k", "M", "G" mean "10^3", "10^6", "10^9".
The IEC prefixes "Ki", "Mi", "Gi" mean "2^10", "2^20", "2^30".
Let's use the correct name, at least in code.
Only changes the name of the constants, no other behavior change.
I originally defined the bytes() method for the String class, because it
made it obvious that it's a span of bytes instead of span of characters.
This commit makes this more consistent by defining a bytes() method when
the type of the span is known to be u8.
Additionaly, the cast operator to Bytes is overloaded for ByteBuffer and
such.
This change aims to add support for obscure IPv4 address notations, such as 1.1 (which should be equal to 1.0.0.1), or the hypothetical address 1 (which is equal to 0.0.0.1). This is supported on other platforms as well, such as Linux, Windows, *BSD, and even Haiku.
This enables a nice warning in case a function becomes dead code. Also, add forgotten
header to Base64.cpp, which would cause an issue later when we enable -Wmissing-declarations.
