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This concerns both `BufferedSeekable` and `BufferedFile`.
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Previously, statements containing malformed exists expressions such as:
`INSERT INTO t(a) VALUES (SELECT 1)`;
could cause the parser to crash. The parser will now return an error
message instead.
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No functional changes.
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Previously, `Heap` would store serialized data in blocks of 1024 bytes
regardless of the actual length. Data longer than 1024 bytes was
silently truncated causing database corruption.
This changes the heap storage to prefix every block with two new fields:
the total data size in bytes, and the next block to retrieve if the data
is longer than what can be stored inside a single block. By chaining
blocks together, we can store arbitrary amounts of data without needing
to change anything of the logic in the rest of LibSQL.
As part of these changes, the "free list" is also removed from the heap
awaiting an actual implementation: it was never used.
Note that this bumps the database version from 3 to 4, and as such
invalidates (deletes) any database opened with LibSQL that is not
version 4.
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No functional changes. The constants are moved to constexpr variables
inside `Heap`.
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No functional changes.
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We are performing a lot of checks on pointers that are performed again
immediately afterwards because of a dereference. This removes the
redundant `VERIFY`s and simplifies a couple others.
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When debugging in Xcode, the waitpid() for the initial forked process
would always return EINTR or ECHILD. Work around this by blocking all
signals until we're ready to wait for the initial child.
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Rather than creating a TextStyle struct, and then copying its fields
over to a TextAttributes, let's just create a TextAttributes to start
with. This also simplifies the syntax highlighting code by letting us
define underlines along with the other text styling.
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Similar to POSIX read, the basic read and write functions of AK::Stream
do not have a lower limit of how much data they read or write (apart
from "none at all").
Rename the functions to "read some [data]" and "write some [data]" (with
"data" being omitted, since everything here is reading and writing data)
to make them sufficiently distinct from the functions that ensure to
use the entire buffer (which should be the go-to function for most
usages).
No functional changes, just a lot of new FIXMEs.
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Let's make it clear that these functions deal with ASCII case only.
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This class had slightly confusing semantics and the added weirdness
doesn't seem worth it just so we can say "." instead of "->" when
iterating over a vector of NNRPs.
This patch replaces NonnullRefPtrVector<T> with Vector<NNRP<T>>.
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As usual, this removes many unused includes and moves used includes
further down the chain.
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Either take the underlying objects with release_* methods or move() the
instances around.
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We were shadowing the 'result' variable, which made an exec error
message along with the search paths never being printed.
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SQLClient exists as a wrapper around SQL IPC to provide a bit friendlier
interface for clients to deal with. Though right now, it mostly forwards
values as-is from IPC to the clients. This makes it a bit verbose to add
values to IPC responses, as we then have to add it to the callbacks used
by all clients. It's also a bit confusing seeing a sea of "auto" as the
parameter types for these callbacks.
This patch moves these response values to named structures instead. This
will allow adding values without needing to simultaneously update all
clients. We can then separately handle the new values in interested
clients only.
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Use the new get_paths_for_helper_process method in Ladybird to query
Qt for the runtime path of the current executable as well as the build
directory paths.
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`Stream` will be qualified as `AK::Stream` until we remove the
`Core::Stream` namespace. `IODevice` now reuses the `SeekMode` that is
defined by `SeekableStream`, since defining its own would require us to
qualify it with `AK::SeekMode` everywhere.
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In order to daemonize the SQLServer process for Ladybird, we double-fork
and exit the first child process to ensure the grandchild process is in
a detached state to become SQLServer. After commit c05fcd5, this happens
after Ladybird's QApplication is created. QApplication seems to hook up
some `exit` handling that makes the call to `exit(0)` here not actually
exit the child process.
Instead, using `kill` with SIGTERM will actually terminate the child
process.
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Having an alias function that only wraps another one is silly, and
keeping the more obvious name should flush out more uses of deprecated
strings.
No behavior change.
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This makes error invocations such as Error::from_string_literal become
associated with a SQLErrorCode (typically 0, AmbiguousColumnName). The
result, when displayed to the user, is quite confusing, e.g.:
Column name 'Heap()::write_block(): Oversized block' is ambiguous
Instead, just interpret these as internal errors, so the error message
is displayed as-is.
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In doing so, this removes all uses of the Encoder's stream operator,
except for where it is currently still used in the generated IPC code.
So the stream operator currently discards any errors, which is the
existing behavior. A subsequent commit will propagate the errors.
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These instances were detected by searching for files that include
AK/Format.h, but don't match the regex:
\\b(CheckedFormatString|critical_dmesgln|dbgln|dbgln_if|dmesgln|FormatBu
ilder|__FormatIfSupported|FormatIfSupported|FormatParser|FormatString|Fo
rmattable|Formatter|__format_value|HasFormatter|max_format_arguments|out
|outln|set_debug_enabled|StandardFormatter|TypeErasedFormatParams|TypeEr
asedParameter|VariadicFormatParams|v_critical_dmesgln|vdbgln|vdmesgln|vf
ormat|vout|warn|warnln|warnln_if)\\b
(Without the linebreaks.)
This regex is pessimistic, so there might be more files that don't
actually use any formatting functions.
Observe that this revealed that Userland/Libraries/LibC/signal.cpp is
missing an include.
In theory, one might use LibCPP to detect things like this
automatically, but let's do this one step after another.
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This allows you to enter TRUE or FALSE in a SQL statement for BOOLEAN
types. Note that this differs from SQLite, which requires entering 1 or
0 for BOOLEANs; having explicit keywords feels a bit more natural.
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Currently, the generated IPC decoders will default-construct the type to
be decoded, then pass that value by reference to the concrete decoder.
This, of course, requires that the type is default-constructible. This
was an issue for decoding Variants, which had to require the first type
in the Variant list is Empty, to ensure it is default constructible.
Further, this made it possible for values to become uninitialized in
user-defined decoders.
This patch makes the decoder interface such that the concrete decoders
themselves contruct the decoded type upon return from the decoder. To do
so, the default decoders in IPC::Decoder had to be moved to the IPC
namespace scope, as these decoders are now specializations instead of
overloaded methods (C++ requires specializations to be in a namespace
scope).
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This can fail if /run/user/$pid/ doesn't exist, which can happen on wsl
without systemd.
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This currently uses strtod, which is locale-dependent. Use the locale-
independent method added in 65ee9b4134225398f0a5109eb79b0baba98c9cd6.
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Currently, integers are stored in LibSQL as 32-bit signed integers, even
if the provided type is unsigned. This resulted in a series of unchecked
unsigned-to-signed conversions, and prevented storing 64-bit values.
Further, mathematical operations were performed without similar checks,
and without checking for overflow.
This changes SQL::Value to behave like SQLite for INTEGER types. In
SQLite, the INTEGER type does not imply a size or signedness of the
underlying type. Instead, SQLite determines on-the-fly what type is
needed as values are created and updated.
To do so, the SQL::Value variant can now hold an i64 or u64 integer. If
a specific type is requested, invalid conversions are now explictly an
error (e.g. converting a stored -1 to a u64 will fail). When binary
mathematical operations are performed, we now try to coerce the RHS
value to a type that works with the LHS value, failing the operation if
that isn't possible. Any overflow or invalid operation (e.g. bitshifting
a 64-bit value by more than 64 bytes) is an error.
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Removing the bitmask-esque values from the enumeration necessitates a
Heap version bump.
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