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/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
#include "base/type.hpp"
#include "base/scriptglobal.hpp"
#include "base/namespace.hpp"
#include "base/objectlock.hpp"
using namespace icinga;
Type::Ptr Type::TypeInstance;
static Namespace::Ptr l_TypesNS = new Namespace(true);
INITIALIZE_ONCE_WITH_PRIORITY([]() {
ScriptGlobal::GetGlobals()->Set("Types", l_TypesNS, true);
}, InitializePriority::CreateNamespaces);
INITIALIZE_ONCE_WITH_PRIORITY([]() {
l_TypesNS->Freeze();
ObjectLock olock (l_TypesNS);
for (const auto& t : l_TypesNS) {
VERIFY(t.second.Val.IsObjectType<Type>());
}
}, InitializePriority::FreezeNamespaces);
/* Ensure that the priority is lower than the basic namespace initialization in scriptframe.cpp. */
INITIALIZE_ONCE_WITH_PRIORITY([]() {
Type::Ptr type = new TypeType();
type->SetPrototype(TypeType::GetPrototype());
Type::TypeInstance = type;
Type::Register(type);
}, InitializePriority::RegisterTypeType);
String Type::ToString() const
{
return "type '" + GetName() + "'";
}
void Type::Register(const Type::Ptr& type)
{
ScriptGlobal::Set("Types." + type->GetName(), type);
}
Type::Ptr Type::GetByName(const String& name)
{
Value ptype;
if (!l_TypesNS->Get(name, &ptype))
return nullptr;
return ptype;
}
std::vector<Type::Ptr> Type::GetAllTypes()
{
std::vector<Type::Ptr> types;
Namespace::Ptr typesNS = ScriptGlobal::Get("Types", &Empty);
if (typesNS) {
ObjectLock olock(typesNS);
for (const Namespace::Pair& kv : typesNS) {
Value value = kv.second.Val;
if (value.IsObjectType<Type>())
types.push_back(value);
}
}
return types;
}
String Type::GetPluralName() const
{
String name = GetName();
if (name.GetLength() >= 2 && name[name.GetLength() - 1] == 'y' &&
name.SubStr(name.GetLength() - 2, 1).FindFirstOf("aeiou") == String::NPos)
return name.SubStr(0, name.GetLength() - 1) + "ies";
else
return name + "s";
}
Object::Ptr Type::Instantiate(const std::vector<Value>& args) const
{
ObjectFactory factory = GetFactory();
if (!factory)
BOOST_THROW_EXCEPTION(std::runtime_error("Type does not have a factory function."));
return factory(args);
}
bool Type::IsAbstract() const
{
return ((GetAttributes() & TAAbstract) != 0);
}
bool Type::IsAssignableFrom(const Type::Ptr& other) const
{
for (Type::Ptr t = other; t; t = t->GetBaseType()) {
if (t.get() == this)
return true;
}
return false;
}
Object::Ptr Type::GetPrototype() const
{
return m_Prototype;
}
void Type::SetPrototype(const Object::Ptr& object)
{
m_Prototype = object;
}
void Type::SetField(int id, const Value& value, bool suppress_events, const Value& cookie)
{
if (id == 1) {
SetPrototype(value);
return;
}
Object::SetField(id, value, suppress_events, cookie);
}
Value Type::GetField(int id) const
{
int real_id = id - Object::TypeInstance->GetFieldCount();
if (real_id < 0)
return Object::GetField(id);
if (real_id == 0)
return GetName();
else if (real_id == 1)
return GetPrototype();
else if (real_id == 2)
return GetBaseType();
BOOST_THROW_EXCEPTION(std::runtime_error("Invalid field ID."));
}
const std::unordered_set<Type*>& Type::GetLoadDependencies() const
{
static const std::unordered_set<Type*> noDeps;
return noDeps;
}
int Type::GetActivationPriority() const
{
return 0;
}
void Type::RegisterAttributeHandler(int fieldId, const AttributeHandler& callback)
{
throw std::runtime_error("Invalid field ID.");
}
String TypeType::GetName() const
{
return "Type";
}
Type::Ptr TypeType::GetBaseType() const
{
return Object::TypeInstance;
}
int TypeType::GetAttributes() const
{
return 0;
}
int TypeType::GetFieldId(const String& name) const
{
int base_field_count = GetBaseType()->GetFieldCount();
if (name == "name")
return base_field_count + 0;
else if (name == "prototype")
return base_field_count + 1;
else if (name == "base")
return base_field_count + 2;
return GetBaseType()->GetFieldId(name);
}
Field TypeType::GetFieldInfo(int id) const
{
int real_id = id - GetBaseType()->GetFieldCount();
if (real_id < 0)
return GetBaseType()->GetFieldInfo(id);
if (real_id == 0)
return {0, "String", "name", "", nullptr, 0, 0};
else if (real_id == 1)
return Field(1, "Object", "prototype", "", nullptr, 0, 0);
else if (real_id == 2)
return Field(2, "Type", "base", "", nullptr, 0, 0);
throw std::runtime_error("Invalid field ID.");
}
int TypeType::GetFieldCount() const
{
return GetBaseType()->GetFieldCount() + 3;
}
ObjectFactory TypeType::GetFactory() const
{
return nullptr;
}
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