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/*
objectinstance.cpp
This file is part of GammaRay, the Qt application inspection and manipulation tool.
SPDX-FileCopyrightText: 2015 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
Author: Volker Krause <volker.krause@kdab.com>
SPDX-License-Identifier: GPL-2.0-or-later
Contact KDAB at <info@kdab.com> for commercial licensing options.
*/
#include "objectinstance.h"
#include "metaobjectrepository.h"
#include "metaobject.h"
#include "util.h"
using namespace GammaRay;
ObjectInstance::ObjectInstance(QObject *obj)
: m_qtObj(obj)
, m_type(QtObject)
{
m_metaObj = obj ? obj->metaObject() : nullptr;
}
ObjectInstance::ObjectInstance(void *obj, const QMetaObject *metaObj)
: m_obj(obj)
, m_metaObj(metaObj)
, m_type(obj ? QtGadgetPointer : QtMetaObject)
{
}
ObjectInstance::ObjectInstance(void *obj, const char *typeName)
: m_obj(obj)
, m_typeName(typeName)
, m_type(Object)
{
}
ObjectInstance::ObjectInstance(const QVariant &value)
: m_type(QtVariant)
{
m_variant = value;
if (value.canConvert<QObject *>()) {
m_qtObj = value.value<QObject *>();
if (m_qtObj) {
m_metaObj = m_qtObj->metaObject();
m_type = QtObject;
}
} else {
auto mt = QMetaType(value.userType());
if (mt.flags() & QMetaType::IsGadget) {
m_metaObj = mt.metaObject();
if (m_metaObj)
m_type = QtGadgetValue;
} else {
unpackVariant();
}
}
}
ObjectInstance::ObjectInstance(const ObjectInstance &other)
{
copy(other);
}
ObjectInstance &ObjectInstance::operator=(const ObjectInstance &other)
{
copy(other);
return *this;
}
bool ObjectInstance::operator==(const ObjectInstance &rhs) const
{
if (type() != rhs.type())
return false;
switch (type()) {
case Invalid:
return false;
case QtObject:
case QtGadgetPointer:
case Object:
return object() == rhs.object();
case QtMetaObject:
return metaObject() == rhs.metaObject();
case Value:
case QtVariant:
case QtGadgetValue:
return variant() == rhs.variant();
}
Q_ASSERT(false);
return false;
}
ObjectInstance::Type ObjectInstance::type() const
{
return m_type;
}
bool ObjectInstance::isValueType() const
{
return m_type == Value || m_type == QtGadgetValue; // ### || m_type == QtVariant; ??
}
QObject *ObjectInstance::qtObject() const
{
return m_qtObj;
}
void *ObjectInstance::object() const
{
Q_ASSERT(m_type == QtObject || m_type == QtGadgetPointer || m_type == QtGadgetValue || m_type == Object || m_type == Value);
switch (m_type) {
case QtObject:
return m_qtObj;
case QtGadgetPointer:
case QtGadgetValue:
return m_obj ? m_obj : const_cast<void *>(m_variant.constData());
default:
return m_obj;
}
Q_ASSERT(false);
return nullptr;
}
const QVariant &ObjectInstance::variant() const
{
Q_ASSERT(m_type == QtVariant || isValueType());
return m_variant;
}
const QMetaObject *ObjectInstance::metaObject() const
{
return m_metaObj;
}
QByteArray ObjectInstance::typeName() const
{
if (m_metaObj)
return m_metaObj->className();
if (m_variant.isValid() && m_typeName.isEmpty())
return m_variant.typeName();
return m_typeName;
}
bool ObjectInstance::isValid() const
{
switch (m_type) {
case Invalid:
return false;
case QtObject:
return m_qtObj;
case QtMetaObject:
return m_metaObj;
default:
break;
}
return true;
}
void ObjectInstance::copy(const ObjectInstance &other)
{
m_obj = other.m_obj;
m_qtObj = other.m_qtObj.data();
m_variant = other.m_variant;
m_metaObj = other.m_metaObj;
m_typeName = other.m_typeName;
m_type = other.m_type;
if (m_type == Value || m_type == QtGadgetPointer)
unpackVariant(); // pointer changes when copying the variant
}
void ObjectInstance::unpackVariant()
{
const auto mo = MetaObjectRepository::instance()->metaObject(m_variant.typeName());
if (mo && strstr(m_variant.typeName(), "*") != nullptr) { // pointer types
QMetaType(m_variant.userType()).construct(&m_obj, m_variant.constData());
if (!Util::isNullish(m_obj)) {
m_type = Object;
m_typeName = m_variant.typeName();
}
} else if (mo) { // value types
m_obj = const_cast<void *>(m_variant.constData());
m_type = Value;
m_typeName = m_variant.typeName();
}
if (!m_variant.isNull() && strstr(m_variant.typeName(), "*") != nullptr) { // pointer to gadget
QByteArray normalizedTypeName = m_variant.typeName();
// krazy:cond=doublequote_chars
normalizedTypeName.replace('*', "");
normalizedTypeName.replace('&', "");
normalizedTypeName.replace("const ", "");
normalizedTypeName.replace(" const", "");
normalizedTypeName.replace(' ', "");
// krazy:endcond=doublequote_chars
const auto typeId = QMetaType::fromName(normalizedTypeName).id();
if (typeId != QMetaType::UnknownType && (QMetaType(typeId).flags() & QMetaType::IsGadget)) {
QMetaType(m_variant.userType()).construct(&m_obj, m_variant.constData());
m_metaObj = QMetaType(typeId).metaObject();
if (m_obj && m_metaObj) {
m_type = QtGadgetPointer;
m_typeName = m_variant.typeName();
}
}
}
}
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