While the primary intention of this pretty printing implementation is
to provide what Qt Creator needs, it can be used in a plain GDB and LLDB
session, too.
With
python sys.path.insert(1, '<path/to/qtcreator>/share/qtcreator/debugger/')
python from gdbbridge import *
in .gdbinit there is a new "GDB command", called "pp".
With code like
int main(int argc, char *argv[])
{
QString ss = "Hello";
QApplication app(argc, argv);
app.setObjectName(ss);
// break here
}
the "pp" command can be used as follows:
(gdb) pp app
app =
[
<QGuiApplication> = {"Hello"}
staticMetaObject = <QMetaObject> = {""}
[parent] = <QObject *> = {"0x0"}
[children] = <QObjectList> = {"<3 items>"}
[properties] = "<>0 items>"
[methods] = "<6 items>"
[signals] = "<1 items>"
],<QApplication> = {"Hello"}
(gdb) pp app [properties],[children]
app =
[
<QGuiApplication> = {"Hello"}
staticMetaObject = <QMetaObject> = {""}
[parent] = <QObject *> = {"0x0"}
[children] = [
<QObject> = {""}
<QObject> = {""}
<QObject> = {"fusion"}
],<QObjectList> = {"<3 items>"}
[properties] = [
windowIcon = <QVariant (QIcon)> = {""}
cursorFlashTime = <QVariant (int)> = {"1000"}
doubleClickInterval = <QVariant (int)> = {"400"}
keyboardInputInterval = <QVariant (int)> = {"400"}
wheelScrollLines = <QVariant (int)> = {"3"}
globalStrut = <QVariant (QSize)> = {"(0, 0)"}
startDragTime = <QVariant (int)> = {"500"}
startDragDistance = <QVariant (int)> = {"10"}
styleSheet = <QVariant (QString)> = {""}
autoSipEnabled = <QVariant (bool)> = {"true"}
],"<10 items>"
[methods] = "<6 items>"
[signals] = "<1 items>"
],<QApplication> = {"Hello"}
(gdb) pp ss
ss =
<QString> = {"Hello"}
Or for LLDB (.lldbinit or directly in the LLDB interpreter):
command script import <path/to/qtcreator>/share/qtcreator/debugger/lldbbridge.py
This will add LLDB summary providers for all the Qt types in a new type category named 'Qt'.
In order to hook a new debugger backend into this "common pretty printing system",
the backend should expose a Python API containing at least the following:
class Value:
name() -> string # Name of this thing or None
type() -> Type # Type of this value
asBytes() -> bytes # Memory contents of this object, or None
address() -> int # Address of this object, or None
dereference() -> Value # Dereference if value is pointer,
# remove reference if value is reference.
hasChildren() -> bool # Whether this object has subobjects.
expand() -> bool # Make sure that children are accessible.
nativeDebuggerValue() -> string # Dumper value returned from the debugger
childFromName(string name) -> Value # (optional)
childFromField(Field field) -> Value # (optional)
childFromIndex(int position) -> Value # (optional)
class Type:
name() -> string # Full name of this type
bitsize() -> int # Size of type in bits
code() -> TypeCodeTypedef
| TypeCodeStruct
| TypeCodeVoid
| TypeCodeIntegral
| TypeCodeFloat
| TypeCodeEnum
| TypeCodePointer
| TypeCodeArray
| TypeCodeComplex
| TypeCodeReference
| TypeCodeFunction
| TypeCodeMemberPointer
| TypeCodeUnresolvable
unqualified() -> Type # Type without const/volatile
target() -> Type # Type dereferenced if it is a pointer type, element if array etc
stripTypedef() -> Type # Type with typedefs removed
fields() -> [ Fields ] # List of fields (member and base classes) of this type
templateArgument(int pos, bool numeric) -> Type or int # (optional)
class Field:
name() -> string # Name of member, None for anonymous items
isBaseClass() -> bool # Whether this is a base class or normal member
type() -> Type # Type of this member
parentType() -> Type # Type of class this member belongs to
bitsize() -> int # Size of member in bits
bitpos() -> int # Offset of member in parent type in bits
parseAndEvaluate(string: expr) -> Value # or None if not possible.
lookupType(string: name) -> Type # or None if not possible.
listOfLocals() -> [ Value ] # List of items currently in scope.
readRawMemory(ULONG64 address, ULONG size) -> bytes # Read a block of data from the virtual address space
Kylin-V10-GFB-020-desktop-arm64 编译完成qt-creator-4.8.1 （1037个子文件） 
libqbscore.so.1 3.2MB libCPlusPlus.so.4.8.1 2.46MB libUtils.so.4.8.1 2.24MB libModeling.so.4.8.1 2.13MB libQtcSsh.so.4.8.1 2.11MB libQmlJS.so.4.8.1 1.64MB libSqlite.so.4.8.1 936KB libLanguageServerProtocol.so.4.8.1 848KB libQmlEditorWidgets.so.4.8.1 399KB libClangsupport.so.4.8.1 377KB libTracing.so.4.8.1 358KB libGLSL.so.4.8.1 335KB libqbsqtprofilesetup.so.1 310KB libExtensionSystem.so.4.8.1 290KB libQmlDebug.so.4.8.1 208KB libLanguageUtils.so.4.8.1 63KB libAggregation.so.4.8.1 22KB libqbscore.so.1.12 3.2MB libqbsqtprofilesetup.so.1.12 310KB libqbscore.so.1.12.2 3.2MB libqbsqtprofilesetup.so.1.12.2 310KB libCPlusPlus.so.4 2.46MB libUtils.so.4 2.24MB libModeling.so.4 2.13MB libQtcSsh.so.4 2.11MB libQmlJS.so.4 1.64MB libSqlite.so.4 936KB libLanguageServerProtocol.so.4 848KB libQmlEditorWidgets.so.4 399KB libClangsupport.so.4 377KB libTracing.so.4 358KB libGLSL.so.4 335KB libExtensionSystem.so.4 290KB libQmlDebug.so.4 208KB libLanguageUtils.so.4 63KB libAggregation.so.4 22KB libCPlusPlus.so.4.8 2.46MB libUtils.so.4.8 2.24MB libModeling.so.4.8 2.13MB libQtcSsh.so.4.8 2.11MB libQmlJS.so.4.8 1.64MB libSqlite.so.4.8 936KB libLanguageServerProtocol.so.4.8 848KB libQmlEditorWidgets.so.4.8 399KB libClangsupport.so.4.8 377KB libTracing.so.4.8 358KB libGLSL.so.4.8 335KB libExtensionSystem.so.4.8 290KB libQmlDebug.so.4.8 208KB libLanguageUtils.so.4.8 63KB libAggregation.so.4.8 22KB buildoutputparser 30KB main.c 80B qtquickcontrols2.conf 546B cpaster 130KB nodeinstanceserver.cpp 49KB objectnodeinstance.cpp 26KB qmlprivategate.cpp 25KB quickitemnodeinstance.cpp 23KB servernodeinstance.cpp 18KB nodeinstanceclientproxy.cpp 18KB qmlprivategate_56.cpp 16KB sharedmemory_unix.cpp 13KB qt5testnodeinstanceserver.cpp 12KB metaobject.cpp 11KB qt5informationnodeinstanceserver.cpp 10KB designercustomobjectdata.cpp 10KB nodeinstanceserverinterface.cpp 8KB imagecontainer.cpp 8KB mouse.cpp 7KB tidy_example.cpp 6KB qt5rendernodeinstanceserver.cpp 6KB instancecontainer.cpp 5KB valueschangedcommand.cpp 5KB qml2puppetmain.cpp 5KB createscenecommand.cpp 5KB informationcontainer.cpp 5KB nodeinstancesignalspy.cpp 4KB qmlpropertychangesnodeinstance.cpp 4KB qt5previewnodeinstanceserver.cpp 4KB qmlstatenodeinstance.cpp 4KB qt5nodeinstanceserver.cpp 4KB main.cpp 4KB reparentcontainer.cpp 4KB propertyvaluecontainer.cpp 3KB clazy_example.cpp 3KB childrenchangedcommand.cpp 3KB addimportcontainer.cpp 3KB propertybindingcontainer.cpp 3KB enumeration.cpp 3KB mockuptypecontainer.cpp 3KB tokencommand.cpp 3KB main.cpp 3KB qt5nodeinstanceclientproxy.cpp 3KB itemmodel.cpp 3KB propertyabstractcontainer.cpp 3KB hwgen.cpp 3KB main.cpp 3KB main.cpp 3KB main.cpp 3KB共 1037 条
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