Debugger: Enable QObject property display with LLDB

Finally.

Change-Id: I3257ffbb23ca2ea4eec9a97335a95580c9c4482b
Reviewed-by: hjk <hjk121@nokiamail.com>

share/qtcreator/debugger/dumper.py

@@ -347,7 +347,7 @@ class DumperBase:
         return base64.b16encode(s).decode("utf8")
 
     #def toBlob(self, value):
-    #    return self.extractBlob(value.address, value.type.sizeof)
+    #    """Abstract"""
 
     def isArmArchitecture(self):
         return False
@@ -897,7 +897,8 @@ class DumperBase:
             return True
 
         except:
-            self.knownNonQObjectTypes.insert(str(value.type))
+            #warn("NO QOBJECT: %s" % value.type)
+            #self.knownNonQObjectTypes.add(str(value.type))
             pass
 
 
@@ -921,10 +922,7 @@ class DumperBase:
 
 
     # This is called is when a QObject derived class is expanded
-    def putQObjectGuts(self, qobject):
-        smo = self.childWithName(qobject, "staticMetaObject")
-        if smo is None:
-            return
+    def putQObjectGuts(self, qobject, smo):
         with SubItem(self, "[properties]"):
             propertyNames = self.staticQObjectPropertyNames(smo)
             propertyCount = len(propertyNames)

share/qtcreator/debugger/gdbbridge.py

@@ -1418,7 +1418,8 @@ class Dumper(DumperBase):
             with Children(self, 1, childType=innerType):
                 self.putFields(value)
                 if isQObject:
-                    self.putQObjectGuts(value)
+                    smo = value["staticMetaObject"]
+                    self.putQObjectGuts(value, smo)
 
 
     def putPlainChildren(self, value):

share/qtcreator/debugger/lldbbridge.py

@@ -79,6 +79,7 @@ import lldb
 
 qqWatchpointOffset = 10000
 
+lldb.theDumper = None
 
 def warn(message):
     print('\n\nWARNING="%s",\n' % message.encode("latin1").replace('"', "'"))
@@ -182,16 +183,7 @@ def impl_SBValue__getitem__(value, index):
             address = address & 0xFFFFFFFFFFFFFFFF  # Force unsigned
             return value.CreateValueFromAddress(None, address, innertype)
         return value.GetChildAtIndex(index)
-    result = value.GetChildMemberWithName(index)
-    if int(result.GetLoadAddress()) == 0xffffffffffffffff:
-        options = lldb.SBExpressionOptions()
-        typeClass = result.GetType().GetTypeClass()
-        if typeClass != lldb.eTypeClassBuiltin:
-            i = value.GetIndexOfChildWithName(index)
-            field = value.GetType().GetFieldAtIndex(i)
-            addr = value.GetLoadAddress() + field.GetOffsetInBytes()
-            result = value.CreateValueFromAddress(result.GetName(), addr, result.GetType())
-    return result
+    return value.GetChildMemberWithName(index)
 
 def impl_SBValue__deref(value):
     result = value.Dereference()
@@ -263,6 +255,8 @@ class Dumper(DumperBase):
     def __init__(self):
         DumperBase.__init__(self)
 
+        lldb.theDumper = self
+
         self.debugger = lldb.SBDebugger.Create()
         #self.debugger.SetLoggingCallback(loggingCallback)
         #Same as: self.debugger.HandleCommand("log enable lldb dyld step")
@@ -408,7 +402,7 @@ class Dumper(DumperBase):
         type = value.type.name
         exp = "((%s*)%s)->%s(%s)" % (type, value.address, func, arg)
         #warn("CALL: %s" % exp)
-        result = value.CreateValueFromExpression('$tmp', exp)
+        result = value.CreateValueFromExpression('', exp)
         #warn("  -> %s" % result)
         return result
 
@@ -857,6 +851,9 @@ class Dumper(DumperBase):
         error = lldb.SBError()
         return Blob(self.process.ReadMemory(base, size, error))
 
+    def readCArray(self, base, size):
+        return self.extractBlob(base, size).toBytes()
+
     def toBlob(self, value):
         data = value.GetData()
         size = int(data.GetByteSize())
@@ -868,15 +865,9 @@ class Dumper(DumperBase):
         return Blob(bytes(buf))
 
     def isQObject(self, value):
-        try:
-            vtable = value.Cast(self.voidPtrType().GetPointerType())
-            metaObjectEntry = vtable.Dereference()
-            addr = lldb.SBAddress(long(metaObjectEntry), self.target)
-            symbol = addr.GetSymbol()
-            name = symbol.GetMangledName()
-            return name.find("10metaObjectEv") > 0
-        except:
-            return False
+        needle = value.GetType().GetName() + "::staticMetaObject"
+        value = self.target.FindFirstGlobalVariable(needle)
+        return value.IsValid()
 
     def stripNamespaceFromType(self, typeName):
         #type = stripClassTag(typeName)
@@ -898,7 +889,7 @@ class Dumper(DumperBase):
 
     def putSubItem(self, component, value, tryDynamic=True):
         if not value.IsValid():
-            warn("INVALID SUBITEM")
+            warn("INVALID SUBITEM: %s" % value.GetName())
             return
         with SubItem(self, component):
             self.putItem(value, tryDynamic)
@@ -1004,8 +995,10 @@ class Dumper(DumperBase):
         #numchild = 1 if value.MightHaveChildren() else 0
         numchild = value.GetNumChildren()
         self.putType(typeName)
+        isQObject = False
         if typeClass == lldb.eTypeClassStruct or typeClass == lldb.eTypeClassClass:
             if self.isQObject(value):
+                isQObject = True
                 self.context = value
                 if not self.putQObjectNameValue(value):  # Is this too expensive?
                     self.putEmptyValue()
@@ -1023,6 +1016,10 @@ class Dumper(DumperBase):
         if self.currentIName in self.expandedINames:
             with Children(self):
                 self.putFields(value)
+                if isQObject:
+                    needle = value.GetType().GetName() + "::staticMetaObject"
+                    smo = self.target.FindFirstGlobalVariable(needle)
+                    self.putQObjectGuts(value, smo)
 
     def warn(self, msg):
         self.put('{name="%s",value="",type=""},' % msg)

tests/auto/debugger/tst_dumpers.cpp

@@ -2228,7 +2228,6 @@ void tst_Dumpers::dumper_data()
     QTest::newRow("QObject2")
             << Data("#include <QWidget>\n"
                     "#include <QApplication>\n"
-                    "namespace Names {\n"
                     "namespace Bar {\n"
                     "    struct Ui { Ui() { w = 0; } QWidget *w; };\n"
                     "    class TestObject : public QObject\n"
@@ -2257,11 +2256,10 @@ void tst_Dumpers::dumper_data()
                     "        QByteArray m_myProp2;\n"
                     "    };\n"
                     "} // namespace Bar\n"
-                    "} // namespace Names\n"
                     "#include <main.moc>\n",
                     ""
                     "QApplication app(argc, argv);\n"
-                    "Names::Bar::TestObject test;\n"
+                    "Bar::TestObject test;\n"
                     "test.setMyProp1(\"Hello\");\n"
                     "test.setMyProp2(\"World\");\n"
                     "QString s = test.myProp1();\n"
@@ -2269,7 +2267,7 @@ void tst_Dumpers::dumper_data()
                     "unused(&app, &test, &s);\n")
                % GuiProfile()
                % Check("s", "\"HelloWorld\"", "@QString")
-               % Check("test", "", "Names::Bar::TestObject")
+               % Check("test", "", "Bar::TestObject")
                % Check("test.[properties]", "<4 items>", "")
                % Check("test.[properties].myProp1", "\"Hello\"", "@QVariant (QString)")
                % Check("test.[properties].myProp2", "\"World\"", "@QVariant (QByteArray)")