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// Copyright (C) 2022 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include "defaultvalue.h"
#include "qtcompat.h"
#include <QtCore/QDebug>
using namespace Qt::StringLiterals;
// DefaultValue is used for storing default values of types for which code is
// generated in different contexts:
//
// Context | Example: "Class *" | Example: "Class" with default Constructor
// --------------------+-------------------------------+------------------------------------------
// Variable | var{nullptr}; | var;
// initializations | |
// --------------------+-------------------------------+------------------------------------------
// Return values | return nullptr; | return {}
// --------------------+-------------------------------+------------------------------------------
// constructor | static_cast<Class *>(nullptr) | Class()
// arguments lists | |
// (recursive, precise | |
// matching). | |
DefaultValue::DefaultValue(Type t, QString value) :
m_type(t), m_value(std::move(value))
{
}
DefaultValue::DefaultValue(QString customValue) :
m_type(Custom), m_value(std::move(customValue))
{
}
QString DefaultValue::returnValue() const
{
switch (m_type) {
case DefaultValue::Boolean:
return u"false"_s;
case DefaultValue::CppScalar:
return u"0"_s;
case DefaultValue::Custom:
case DefaultValue::Enum:
return m_value;
case DefaultValue::Pointer:
return u"nullptr"_s;
case DefaultValue::Void:
return {};
case DefaultValue::DefaultConstructorWithDefaultValues:
return m_value + u"()"_s;
case DefaultValue::DefaultConstructor:
break;
}
return u"{}"_s;
}
QString DefaultValue::initialization() const
{
switch (m_type) {
case DefaultValue::Boolean:
return u"{false}"_s;
case DefaultValue::CppScalar:
return u"{0}"_s;
case DefaultValue::Custom:
return u" = "_s + m_value;
case DefaultValue::Enum:
return u'{' + m_value + u'}';
case DefaultValue::Pointer:
return u"{nullptr}"_s;
case DefaultValue::Void:
Q_ASSERT(false);
break;
case DefaultValue::DefaultConstructor:
case DefaultValue::DefaultConstructorWithDefaultValues:
break;
}
return {};
}
QString DefaultValue::constructorParameter() const
{
switch (m_type) {
case DefaultValue::Boolean:
return u"false"_s;
case DefaultValue::CppScalar: {
// PYSIDE-846: Use static_cast in case of "unsigned long" and similar
const QString cast = m_value.contains(u' ')
? u"static_cast<"_s + m_value + u'>'
: m_value;
return cast + u"(0)"_s;
}
case DefaultValue::Custom:
case DefaultValue::Enum:
return m_value;
case DefaultValue::Pointer:
// Be precise here to be able to differentiate between constructors
// taking different pointer types, cf
// QTreeWidgetItemIterator(QTreeWidget *) and
// QTreeWidgetItemIterator(QTreeWidgetItemIterator *).
return u"static_cast<"_s + m_value + u"*>(nullptr)"_s;
case DefaultValue::Void:
Q_ASSERT(false);
break;
case DefaultValue::DefaultConstructor:
case DefaultValue::DefaultConstructorWithDefaultValues:
break;
}
return m_value + u"()"_s;
}
QDebug operator<<(QDebug debug, const DefaultValue &v)
{
QDebugStateSaver saver(debug);
debug.noquote();
debug.nospace();
debug << "DefaultValue(" << v.type() << ", \"" << v.value() << "\")";
return debug;
}
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