mirror of https://github.com/Icinga/icinga2.git
154 lines
3.8 KiB
C++
154 lines
3.8 KiB
C++
/******************************************************************************
|
|
* Icinga 2 *
|
|
* Copyright (C) 2012 Icinga Development Team (http://www.icinga.org/) *
|
|
* *
|
|
* This program is free software; you can redistribute it and/or *
|
|
* modify it under the terms of the GNU General Public License *
|
|
* as published by the Free Software Foundation; either version 2 *
|
|
* of the License, or (at your option) any later version. *
|
|
* *
|
|
* This program is distributed in the hope that it will be useful, *
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
|
|
* GNU General Public License for more details. *
|
|
* *
|
|
* You should have received a copy of the GNU General Public License *
|
|
* along with this program; if not, write to the Free Software Foundation *
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
|
|
******************************************************************************/
|
|
|
|
#ifndef VARIANT_H
|
|
#define VARIANT_H
|
|
|
|
struct cJSON;
|
|
|
|
namespace icinga
|
|
{
|
|
|
|
/**
|
|
* A type that can hold an arbitrary value.
|
|
*
|
|
* @ingroup base
|
|
*/
|
|
class I2_BASE_API Variant
|
|
{
|
|
public:
|
|
inline Variant(void)
|
|
: m_Value()
|
|
{ }
|
|
|
|
inline Variant(int value)
|
|
: m_Value(static_cast<long>(value))
|
|
{ }
|
|
|
|
inline Variant(long value)
|
|
: m_Value(value)
|
|
{ }
|
|
|
|
inline Variant(double value)
|
|
: m_Value(value)
|
|
{ }
|
|
|
|
inline Variant(bool value)
|
|
: m_Value(static_cast<long>(value))
|
|
{ }
|
|
|
|
inline Variant(const string& value)
|
|
: m_Value(value)
|
|
{ }
|
|
|
|
inline Variant(const char *value)
|
|
: m_Value(string(value))
|
|
{ }
|
|
|
|
template<typename T>
|
|
inline Variant(const shared_ptr<T>& value)
|
|
{
|
|
Object::Ptr object = dynamic_pointer_cast<Object>(value);
|
|
|
|
if (!object)
|
|
throw_exception(invalid_argument("shared_ptr value type must inherit from Object class."));
|
|
|
|
m_Value = object;
|
|
}
|
|
|
|
operator long(void) const
|
|
{
|
|
if (m_Value.type() != typeid(long)) {
|
|
if (m_Value.type() == typeid(double)) {
|
|
// TODO: log this?
|
|
return boost::get<double>(m_Value);
|
|
} else {
|
|
return boost::lexical_cast<long>(m_Value);
|
|
}
|
|
} else {
|
|
return boost::get<long>(m_Value);
|
|
}
|
|
}
|
|
|
|
operator double(void) const
|
|
{
|
|
if (m_Value.type() != typeid(double)) {
|
|
return boost::lexical_cast<double>(m_Value);
|
|
} else {
|
|
return boost::get<double>(m_Value);
|
|
}
|
|
}
|
|
|
|
operator bool(void) const
|
|
{
|
|
return (static_cast<long>(*this) != 0);
|
|
}
|
|
|
|
operator string(void) const
|
|
{
|
|
if (m_Value.type() != typeid(string)) {
|
|
string result = boost::lexical_cast<string>(m_Value);
|
|
m_Value = result;
|
|
return result;
|
|
} else {
|
|
return boost::get<string>(m_Value);
|
|
}
|
|
}
|
|
|
|
template<typename T>
|
|
operator shared_ptr<T>(void) const
|
|
{
|
|
if (IsEmpty())
|
|
return shared_ptr<T>();
|
|
|
|
shared_ptr<T> object = dynamic_pointer_cast<T>(boost::get<Object::Ptr>(m_Value));
|
|
|
|
if (!object)
|
|
throw_exception(bad_cast());
|
|
|
|
return object;
|
|
}
|
|
|
|
bool IsEmpty(void) const;
|
|
bool IsScalar(void) const;
|
|
bool IsObject(void) const;
|
|
|
|
template<typename T>
|
|
bool IsObjectType(void) const
|
|
{
|
|
if (!IsObject())
|
|
return false;
|
|
|
|
return (dynamic_pointer_cast<T>(boost::get<Object::Ptr>(m_Value)));
|
|
}
|
|
|
|
static Variant FromJson(cJSON *json);
|
|
cJSON *ToJson(void) const;
|
|
|
|
string Serialize(void) const;
|
|
static Variant Deserialize(const string& jsonString);
|
|
|
|
private:
|
|
mutable boost::variant<boost::blank, long, double, string, Object::Ptr> m_Value;
|
|
};
|
|
|
|
}
|
|
|
|
#endif /* VARIANT_H */
|