1berry/qtbase
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

qdbuserror: Use qOffsetStringArray instead of script generated code

Browse Source 
Change-Id: I2498702bcf4706cb717a7481cf6f81ceebb29ae8
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
This commit is contained in:
Mikhail Svetkin 2018-07-26 14:41:42 +02:00
parent 0014d81b19
commit b472e73b02
2 changed files with 48 additions and 100 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
src/corelib/tools/qoffsetstringarray_p.h
View File

@ -123,6 +123,8 @@ constexpr StaticString<0> staticString() noexcept
return StaticString<0>{};
}
QT_WARNING_PUSH
QT_WARNING_DISABLE_MSVC(4503)
template<int Sum, int I, int ... Ix>
constexpr StaticString<Sum> staticString(const char (&s)[I], const char (&...sx)[Ix]) noexcept
{
@ -130,6 +132,7 @@ constexpr StaticString<Sum> staticString(const char (&s)[I], const char (&...sx)
makeIndexSequence<I>,
makeIndexSequence<Sum - I>>::concatenate(s, staticString<Sum - I>(sx...));
}
QT_WARNING_POP
} // namespace QtPrivate
template<typename T, int SizeString, int SizeOffsets>

145
src/dbus/qdbuserror.cpp
View File

@ -41,6 +41,7 @@
#include <qdebug.h>
#include <qvarlengtharray.h>
#include <private/qoffsetstringarray_p.h>
#ifndef QT_BOOTSTRAPPED
#include "qdbus_symbols_p.h"
@ -52,110 +53,46 @@
QT_BEGIN_NAMESPACE
/*
* Use the following Perl script to generate the error string index list:
===== PERL SCRIPT ====
print "static const char errorMessages_string[] =\n";
$counter = 0;
$i = 0;
while (<STDIN>) {
chomp;
print " \"$_\\0\"\n";
$sizes[$i++] = $counter;
$counter += 1 + length $_;
}
print " \"\\0\";\n\nstatic const int errorMessages_indices[] = {\n ";
for ($j = 0; $j < $i; ++$j) {
printf "$sizes[$j], ";
}
print "0\n};\n";
===== PERL SCRIPT ====
* The input data is as follows:
other
org.freedesktop.DBus.Error.Failed
org.freedesktop.DBus.Error.NoMemory
org.freedesktop.DBus.Error.ServiceUnknown
org.freedesktop.DBus.Error.NoReply
org.freedesktop.DBus.Error.BadAddress
org.freedesktop.DBus.Error.NotSupported
org.freedesktop.DBus.Error.LimitsExceeded
org.freedesktop.DBus.Error.AccessDenied
org.freedesktop.DBus.Error.NoServer
org.freedesktop.DBus.Error.Timeout
org.freedesktop.DBus.Error.NoNetwork
org.freedesktop.DBus.Error.AddressInUse
org.freedesktop.DBus.Error.Disconnected
org.freedesktop.DBus.Error.InvalidArgs
org.freedesktop.DBus.Error.UnknownMethod
org.freedesktop.DBus.Error.TimedOut
org.freedesktop.DBus.Error.InvalidSignature
org.freedesktop.DBus.Error.UnknownInterface
org.freedesktop.DBus.Error.UnknownObject
org.freedesktop.DBus.Error.UnknownProperty
org.freedesktop.DBus.Error.PropertyReadOnly
org.qtproject.QtDBus.Error.InternalError
org.qtproject.QtDBus.Error.InvalidService
org.qtproject.QtDBus.Error.InvalidObjectPath
org.qtproject.QtDBus.Error.InvalidInterface
org.qtproject.QtDBus.Error.InvalidMember
*/
// in the same order as KnownErrors!
static const char errorMessages_string[] =
"other\0"
"org.freedesktop.DBus.Error.Failed\0"
"org.freedesktop.DBus.Error.NoMemory\0"
"org.freedesktop.DBus.Error.ServiceUnknown\0"
"org.freedesktop.DBus.Error.NoReply\0"
"org.freedesktop.DBus.Error.BadAddress\0"
"org.freedesktop.DBus.Error.NotSupported\0"
"org.freedesktop.DBus.Error.LimitsExceeded\0"
"org.freedesktop.DBus.Error.AccessDenied\0"
"org.freedesktop.DBus.Error.NoServer\0"
"org.freedesktop.DBus.Error.Timeout\0"
"org.freedesktop.DBus.Error.NoNetwork\0"
"org.freedesktop.DBus.Error.AddressInUse\0"
"org.freedesktop.DBus.Error.Disconnected\0"
"org.freedesktop.DBus.Error.InvalidArgs\0"
"org.freedesktop.DBus.Error.UnknownMethod\0"
"org.freedesktop.DBus.Error.TimedOut\0"
"org.freedesktop.DBus.Error.InvalidSignature\0"
"org.freedesktop.DBus.Error.UnknownInterface\0"
"org.freedesktop.DBus.Error.UnknownObject\0"
"org.freedesktop.DBus.Error.UnknownProperty\0"
"org.freedesktop.DBus.Error.PropertyReadOnly\0"
"org.qtproject.QtDBus.Error.InternalError\0"
"org.qtproject.QtDBus.Error.InvalidService\0"
"org.qtproject.QtDBus.Error.InvalidObjectPath\0"
"org.qtproject.QtDBus.Error.InvalidInterface\0"
"org.qtproject.QtDBus.Error.InvalidMember\0"
"\0";
static const int errorMessages_indices[] = {
0, 6, 40, 76, 118, 153, 191, 231,
273, 313, 349, 384, 421, 461, 501, 540,
581, 617, 661, 705, 746, 789, 833, 874,
916, 961, 1005
};
static const int errorMessages_count = sizeof errorMessages_indices /
sizeof errorMessages_indices[0];
static inline const char *get(QDBusError::ErrorType code)
{
int intcode = qBound(0, int(code) - int(QDBusError::Other), errorMessages_count);
return errorMessages_string + errorMessages_indices[intcode];
}
static constexpr const auto errorMessages = qOffsetStringArray(
"NoError",
"other",
"org.freedesktop.DBus.Error.Failed",
"org.freedesktop.DBus.Error.NoMemory",
"org.freedesktop.DBus.Error.ServiceUnknown",
"org.freedesktop.DBus.Error.NoReply",
"org.freedesktop.DBus.Error.BadAddress",
"org.freedesktop.DBus.Error.NotSupported",
"org.freedesktop.DBus.Error.LimitsExceeded",
"org.freedesktop.DBus.Error.AccessDenied",
"org.freedesktop.DBus.Error.NoServer",
"org.freedesktop.DBus.Error.Timeout",
"org.freedesktop.DBus.Error.NoNetwork",
"org.freedesktop.DBus.Error.AddressInUse",
"org.freedesktop.DBus.Error.Disconnected",
"org.freedesktop.DBus.Error.InvalidArgs",
"org.freedesktop.DBus.Error.UnknownMethod",
"org.freedesktop.DBus.Error.TimedOut",
"org.freedesktop.DBus.Error.InvalidSignature",
"org.freedesktop.DBus.Error.UnknownInterface",
"org.freedesktop.DBus.Error.UnknownObject",
"org.freedesktop.DBus.Error.UnknownProperty",
"org.freedesktop.DBus.Error.PropertyReadOnly",
"org.qtproject.QtDBus.Error.InternalError",
"org.qtproject.QtDBus.Error.InvalidService",
"org.qtproject.QtDBus.Error.InvalidObjectPath",
"org.qtproject.QtDBus.Error.InvalidInterface",
"org.qtproject.QtDBus.Error.InvalidMember",
""
);
#ifndef QT_BOOTSTRAPPED
static inline QDBusError::ErrorType get(const char *name)
{
if (!name || !*name)
return QDBusError::NoError;
for (int i = 0; i < errorMessages_count; ++i)
if (strcmp(name, errorMessages_string + errorMessages_indices[i]) == 0)
return QDBusError::ErrorType(i + int(QDBusError::Other));
for (int i = 0; i < errorMessages.count(); ++i)
if (strcmp(name, errorMessages.at(i)) == 0)
return QDBusError::ErrorType(i);
return QDBusError::Other;
}
#endif
@ -301,7 +238,7 @@ QDBusError::QDBusError(const QDBusMessage &qdmsg)
QDBusError::QDBusError(ErrorType error, const QString &mess)
: code(error)
{
nm = QLatin1String(::get(error));
nm = QLatin1String(errorMessages[error]);
msg = mess;
}
@ -397,7 +334,7 @@ bool QDBusError::isValid() const
*/
QString QDBusError::errorString(ErrorType error)
{
return QLatin1String(::get(error));
return QLatin1String(errorMessages[error]);
}
#ifndef QT_NO_DEBUG_STREAM
@ -418,3 +355,11 @@ QDebug operator<<(QDebug dbg, const QDBusError &msg)
QT_END_NAMESPACE
#endif // QT_NO_DBUS
/*
MSVC2015 has the warning C4503 at the end of the file:
QtPrivate::StaticStringBuilder<QtPrivate::IndexesList<...> - decorated name length exceeded, name was truncated
It is used by qOffsetStringArray in a constexpr evaulation and this code does not exist in the object file,
but we still have the warning or even error with -WX flag
*/
QT_WARNING_DISABLE_MSVC(4503)