icinga2/lib/base/value.cpp

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/******************************************************************************
* Icinga 2 *
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* Copyright (C) 2012-2016 Icinga Development Team (https://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 *
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
******************************************************************************/
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#include "base/value.hpp"
#include "base/array.hpp"
#include "base/dictionary.hpp"
#include "base/type.hpp"
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using namespace icinga;
Value icinga::Empty;
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bool Value::ToBool(void) const
{
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switch (GetType()) {
case ValueNumber:
return static_cast<bool>(boost::get<double>(m_Value));
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case ValueBoolean:
return boost::get<bool>(m_Value);
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case ValueString:
return !boost::get<String>(m_Value).IsEmpty();
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case ValueObject:
if (IsObjectType<Dictionary>()) {
Dictionary::Ptr dictionary = *this;
return dictionary->GetLength() > 0;
} else if (IsObjectType<Array>()) {
Array::Ptr array = *this;
return array->GetLength() > 0;
} else {
return true;
}
case ValueEmpty:
return false;
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default:
BOOST_THROW_EXCEPTION(std::runtime_error("Invalid variant type."));
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}
}
String Value::GetTypeName(void) const
{
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Type::Ptr t;
switch (GetType()) {
case ValueEmpty:
return "Empty";
case ValueNumber:
return "Number";
case ValueBoolean:
return "Boolean";
case ValueString:
return "String";
case ValueObject:
t = boost::get<Object::Ptr>(m_Value)->GetReflectionType();
if (!t) {
if (IsObjectType<Array>())
return "Array";
else if (IsObjectType<Dictionary>())
return "Dictionary";
else
return "Object";
} else
return t->GetName();
default:
return "Invalid";
}
}
Type::Ptr Value::GetReflectionType(void) const
{
switch (GetType()) {
case ValueEmpty:
return Object::TypeInstance;
case ValueNumber:
return Type::GetByName("Number");
case ValueBoolean:
return Type::GetByName("Boolean");
case ValueString:
return Type::GetByName("String");
case ValueObject:
return boost::get<Object::Ptr>(m_Value)->GetReflectionType();
default:
return Type::Ptr();
}
}
Value Value::Clone(void) const
{
if (IsObject())
return static_cast<Object::Ptr>(*this)->Clone();
else
return *this;
}