icinga2/lib/base/type.cpp

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/******************************************************************************
* Icinga 2 *
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* Copyright (C) 2012-2015 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. *
******************************************************************************/
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#include "base/type.hpp"
#include "base/scriptglobal.hpp"
using namespace icinga;
static void RegisterTypeType(void)
{
Type::Ptr type = new TypeType();
Type::TypeInstance = type;
Type::Register(type);
}
INITIALIZE_ONCE(RegisterTypeType);
String Type::ToString(void) const
{
return "type '" + GetName() + "'";
}
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void Type::Register(const Type::Ptr& type)
{
VERIFY(GetByName(type->GetName()) == NULL);
ScriptGlobal::Set(type->GetName(), type);
}
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Type::Ptr Type::GetByName(const String& name)
{
Value ptype = ScriptGlobal::Get(name, &Empty);
if (!ptype.IsObjectType<Type>())
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return Type::Ptr();
return ptype;
}
Object::Ptr Type::Instantiate(void) const
{
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ObjectFactory factory = GetFactory();
if (!factory)
return Object::Ptr();
return factory();
}
bool Type::IsAbstract(void) const
{
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return ((GetAttributes() & TAAbstract) != 0);
}
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bool Type::IsAssignableFrom(const Type::Ptr& other) const
{
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for (Type::Ptr t = other; t; t = t->GetBaseType()) {
if (t.get() == this)
return true;
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}
return false;
}
Object::Ptr Type::GetPrototype(void) const
{
return m_Prototype;
}
void Type::SetPrototype(const Object::Ptr& object)
{
m_Prototype = object;
}
void Type::SetField(int id, const Value& value)
{
if (id == 0) {
SetPrototype(value);
return;
}
Object::SetField(id, value);
}
Value Type::GetField(int id) const
{
if (id == 0)
return GetPrototype();
return Object::GetField(id);
}
std::vector<String> Type::GetLoadDependencies(void) const
{
return std::vector<String>();
}
String TypeType::GetName(void) const
{
return "Type";
}
Type::Ptr TypeType::GetBaseType(void) const
{
return Type::Ptr();
}
int TypeType::GetAttributes(void) const
{
return 0;
}
int TypeType::GetFieldId(const String& name) const
{
if (name == "prototype")
return 0;
return -1;
}
Field TypeType::GetFieldInfo(int id) const
{
if (id == 0)
return Field(0, "Object", "prototype", 0);
throw std::runtime_error("Invalid field ID.");
}
int TypeType::GetFieldCount(void) const
{
return 1;
}
ObjectFactory TypeType::GetFactory(void) const
{
return NULL;
}