C++ type::Ptr类代码示例

	static inline Value ConstructorCall(const Type::Ptr& type, const DebugInfo& debugInfo = DebugInfo())
	{
		if (type->GetName() == "String")
			return "";
		else if (type->GetName() == "Number")
			return 0;
		else if (type->GetName() == "Boolean")
			return false;
		else {
			Object::Ptr object = type->Instantiate();

			if (!object)
				BOOST_THROW_EXCEPTION(ScriptError("Failed to instantiate object of type '" + type->GetName() + "'", debugInfo));

			return object;
		}
	}

String ConfigObjectUtility::GetObjectConfigPath(const Type::Ptr& type, const String& fullName)
{
	String typeDir = type->GetPluralName();
	boost::algorithm::to_lower(typeDir);

	return GetConfigDir() + "/conf.d/" + typeDir +
	    "/" + EscapeName(fullName) + ".conf";
}

	static inline Value NewObject(ScriptFrame& frame, bool abstract, const String& type, const String& name, const boost::shared_ptr<Expression>& filter,
		const String& zone, std::map<String, Expression *> *closedVars, const boost::shared_ptr<Expression>& expression, const DebugInfo& debugInfo = DebugInfo())
	{
		ConfigItemBuilder::Ptr item = new ConfigItemBuilder(debugInfo);

		String checkName = name;

		if (!abstract) {
			Type::Ptr ptype = Type::GetByName(type);

			NameComposer *nc = dynamic_cast<NameComposer *>(ptype.get());

			if (nc)
				checkName = nc->MakeName(name, Dictionary::Ptr());
		}

		if (!checkName.IsEmpty()) {
			ConfigItem::Ptr oldItem = ConfigItem::GetObject(type, checkName);

			if (oldItem) {
				std::ostringstream msgbuf;
				msgbuf << "Object '" << name << "' of type '" << type << "' re-defined: " << debugInfo << "; previous definition: " << oldItem->GetDebugInfo();
				BOOST_THROW_EXCEPTION(ScriptError(msgbuf.str(), debugInfo));
			}
		}

		item->SetType(type);

		if (name.FindFirstOf("!") != String::NPos) {
			std::ostringstream msgbuf;
			msgbuf << "Name for object '" << name << "' of type '" << type << "' is invalid: Object names may not contain '!'";
			BOOST_THROW_EXCEPTION(ScriptError(msgbuf.str(), debugInfo));
		}

		item->SetName(name);

		item->AddExpression(new OwnedExpression(expression));
		item->SetAbstract(abstract);
		item->SetScope(EvaluateClosedVars(frame, closedVars));
		item->SetZone(zone);
		item->SetFilter(filter);
		item->Compile()->Register();

		return Empty;
	}

bool FilterUtility::EvaluateFilter(ScriptFrame& frame, Expression *filter,
	const Object::Ptr& target, const String& variableName)
{
	if (!filter)
		return true;

	Type::Ptr type = target->GetReflectionType();
	String varName;

	if (variableName.IsEmpty())
		varName = type->GetName().ToLower();
	else
		varName = variableName;

	Namespace::Ptr frameNS;

	if (frame.Self.IsEmpty()) {
		frameNS = new Namespace();
		frame.Self = frameNS;
	} else {
		/* Enforce a namespace object for 'frame.self'. */
		ASSERT(frame.Self.IsObjectType<Namespace>());

		frameNS = frame.Self;
	}

	frameNS->Set("obj", target);
	frameNS->Set(varName, target);

	for (int fid = 0; fid < type->GetFieldCount(); fid++) {
		Field field = type->GetFieldInfo(fid);

		if ((field.Attributes & FANavigation) == 0)
			continue;

		Object::Ptr joinedObj = target->NavigateField(fid);

		if (field.NavigationName)
			frameNS->Set(field.NavigationName, joinedObj);
		else
			frameNS->Set(field.Name, joinedObj);
	}

	return Convert::ToBool(filter->Evaluate(frame));
}

Value icinga::GetPrototypeField(const Value& context, const String& field, bool not_found_error, const DebugInfo& debugInfo)
{
	Type::Ptr ctype = context.GetReflectionType();
	Type::Ptr type = ctype;

	do {
		Object::Ptr object = type->GetPrototype();

		if (object && object->HasOwnField(field))
			return object->GetFieldByName(field, false, debugInfo);

		type = type->GetBaseType();
	} while (type);

	if (not_found_error)
		BOOST_THROW_EXCEPTION(ScriptError("Invalid field access (for value of type '" + ctype->GetName() + "'): '" + field + "'", debugInfo));
	else
		return Empty;
}

bool StatusQueryHandler::HandleRequest(const ApiUser::Ptr& user, HttpRequest& request, HttpResponse& response)
{
	if (request.RequestMethod != "GET")
		return false;

	if (request.RequestUrl->GetPath().size() < 2)
		return false;

	Type::Ptr type = FilterUtility::TypeFromPluralName(request.RequestUrl->GetPath()[1]);

	if (!type)
		return false;

	QueryDescription qd;
	qd.Types.insert(type);

	std::vector<String> joinTypes;
	joinTypes.push_back(type->GetName());

	Dictionary::Ptr params = HttpUtility::FetchRequestParameters(request);

	params->Set("type", type->GetName());

	if (request.RequestUrl->GetPath().size() >= 3) {
		String attr = type->GetName();
		boost::algorithm::to_lower(attr);
		params->Set(attr, request.RequestUrl->GetPath()[2]);
	}

	std::vector<ConfigObject::Ptr> objs = FilterUtility::GetFilterTargets(qd, params);

	Array::Ptr results = new Array();

	std::set<String> attrs;
	Array::Ptr uattrs = params->Get("attrs");

	if (uattrs) {
		ObjectLock olock(uattrs);
		BOOST_FOREACH(const String& uattr, uattrs) {
			attrs.insert(uattr);
		}
	}

ValidationError::ValidationError(const ConfigObject::Ptr& object, const std::vector<String>& attributePath, const String& message)
	: m_Object(object), m_AttributePath(attributePath), m_Message(message)
{
	String path;

	BOOST_FOREACH(const String& attribute, attributePath) {
		if (!path.IsEmpty())
			path += " -> ";

		path += "'" + attribute + "'";
	}

	Type::Ptr type = object->GetReflectionType();
	m_What = "Validation failed for object '" + object->GetName() + "' of type '" + type->GetName() + "'";

	if (!path.IsEmpty())
		m_What += "; Attribute " + path;

	m_What += ": " + message;
}

bool FilterUtility::EvaluateFilter(ScriptFrame& frame, Expression *filter,
    const Object::Ptr& target, const String& variableName)
{
	if (!filter)
		return true;

	Type::Ptr type = target->GetReflectionType();
	String varName;

	if (variableName.IsEmpty())
		varName = type->GetName().ToLower();
	else
		varName = variableName;

	Dictionary::Ptr vars;

	if (frame.Self.IsEmpty()) {
		vars = new Dictionary();
		frame.Self = vars;
	} else
		vars = frame.Self;

	vars->Set("obj", target);
	vars->Set(varName, target);

	for (int fid = 0; fid < type->GetFieldCount(); fid++) {
		Field field = type->GetFieldInfo(fid);

		if ((field.Attributes & FANavigation) == 0)
			continue;

		Object::Ptr joinedObj = target->NavigateField(fid);

		if (field.NavigationName)
			vars->Set(field.NavigationName, joinedObj);
		else
			vars->Set(field.Name, joinedObj);
	}

	return Convert::ToBool(filter->Evaluate(frame));
}

Value Object::GetFieldByName(const String& field, bool sandboxed, const DebugInfo& debugInfo) const
{
	Type::Ptr type = GetReflectionType();

	if (!type)
		return Empty;

	int fid = type->GetFieldId(field);

	if (fid == -1)
		return GetPrototypeField(const_cast<Object *>(this), field, true, debugInfo);

	if (sandboxed) {
		Field fieldInfo = type->GetFieldInfo(fid);

		if (fieldInfo.Attributes & FANoUserView)
			BOOST_THROW_EXCEPTION(ScriptError("Accessing the field '" + field + "' for type '" + type->GetName() + "' is not allowed in sandbox mode.", debugInfo));
	}

	return GetField(fid);
}

void CCodeGenerator::operator()(Assignment* expr) {
    // Handle all types of assignment, including member assignment
    Expression::Ptr init = expr->initializer();
    if (dynamic_cast<Empty*>(init.pointer())) {
        return_ = Operand(env_->integer("0"));
    } else {
        return_ = emit(init);
    }

    String::Ptr id = expr->identifier();
    Variable::Ptr var = variable(id);
    Attribute::Ptr attr = class_ ? class_->attribute(id) : 0;

    if (var) {
        // Assignment to a local var that has already been initialized once in
        // the current scope.
        Type::Ptr type = var->type();
        if (!type->is_value()) {
            refcount_dec(Operand(var->name()));
        }
        line();
        out_ << id->string() << " = " << return_ << ";\n";
        if (!type->is_value()) {
            refcount_inc(Operand(var->name()));
        }
    } else if (attr) {
        // Assignment to an attribute within a class
/*
        Type::Ptr type = expr->type(); 
        Variable::Ptr self = variable(env_->name("__self"));
        Operand addr = Operand::addr(, attr->slot());  
        Operand old = load(addr);
        if (!type->is_value() && !attr->is_weak()) {
            refcount_dec(old);
        } 
        store(addr, return_);
        if (!type->is_value() && !attr->is_weak()) {
            refcount_inc(return_);
        }
*/
        assert(!"not impl");
    } else {
        // Assignment to a local var that has not yet been initialized in the
        // current scope.
        Type::Ptr declared = expr->declared_type();
        if (declared->is_top()) {
            declared = expr->type();
        }
        line();
        brace();
        operator()(declared);
        out_ << " " << id->string() << " = " << return_ << "; ";
        out_ << "(void)" << id->string()  << ";\n";
        variable(new Variable(id, declared));
        if (!declared->is_value()) {
            refcount_inc(return_);
        }
    }
}

ConfigType::Ptr ConfigType::GetByName(const String& name)
{
	boost::mutex::scoped_lock lock(GetStaticMutex());

	ConfigType::TypeMap::const_iterator tt = InternalGetTypeMap().find(name);

	if (tt == InternalGetTypeMap().end()) {
		Type::Ptr type = Type::GetByName(name);

		if (!type || !ConfigObject::TypeInstance->IsAssignableFrom(type)
		    || type->IsAbstract())
			return ConfigType::Ptr();

		ConfigType::Ptr dtype = new ConfigType(name);

		InternalGetTypeMap()[type->GetName()] = dtype;
		InternalGetTypeVector().push_back(dtype);

		return dtype;
	}

	return tt->second;
}

bool ObjectQueryHandler::HandleRequest(const ApiUser::Ptr& user, HttpRequest& request, HttpResponse& response)
{
	if (request.RequestUrl->GetPath().size() < 3 || request.RequestUrl->GetPath().size() > 4)
		return false;

	if (request.RequestMethod != "GET")
		return false;

	Type::Ptr type = FilterUtility::TypeFromPluralName(request.RequestUrl->GetPath()[2]);

	if (!type) {
		HttpUtility::SendJsonError(response, 400, "Invalid type specified.");
		return true;
	}

	QueryDescription qd;
	qd.Types.insert(type->GetName());
	qd.Permission = "objects/query/" + type->GetName();

	std::vector<String> joinAttrs;
	joinAttrs.push_back("");

	for (int fid = 0; fid < type->GetFieldCount(); fid++) {
		Field field = type->GetFieldInfo(fid);

		if (field.Attributes & FANavigation)
			joinAttrs.push_back(field.Name);
	}

	Dictionary::Ptr params = HttpUtility::FetchRequestParameters(request);

	params->Set("type", type->GetName());

	if (request.RequestUrl->GetPath().size() >= 4) {
		String attr = type->GetName();
		boost::algorithm::to_lower(attr);
		params->Set(attr, request.RequestUrl->GetPath()[3]);
	}

	std::vector<Value> objs = FilterUtility::GetFilterTargets(qd, params, user);

	Array::Ptr results = new Array();

	std::set<String> attrs;
	Array::Ptr uattrs = params->Get("attrs");

	if (uattrs) {
		ObjectLock olock(uattrs);
		BOOST_FOREACH(const String& uattr, uattrs) {
			attrs.insert(uattr);
		}
	}

std::vector<String> icinga::GetFieldCompletionSuggestions(const Type::Ptr& type, const String& word)
{
	std::vector<String> result;

	for (int i = 0; i < type->GetFieldCount(); i++) {
		Field field = type->GetFieldInfo(i);

		if (!(field.Attributes & FAConfig) || field.Attributes & FAInternal)
			continue;

		if (strcmp(field.TypeName, "int") != 0 && strcmp(field.TypeName, "double") != 0
		    && strcmp(field.TypeName, "bool") != 0 && strcmp(field.TypeName, "String") != 0)
			continue;

		String fname = field.Name;

		String suggestion = fname + "=";

		if (suggestion.Find(word) == 0)
			result.push_back(suggestion);
	}

	return result;
}

Type::Ptr FilterUtility::TypeFromPluralName(const String& pluralName)
{
	String uname = pluralName;
	boost::algorithm::to_lower(uname);

	{
		Dictionary::Ptr globals = ScriptGlobal::GetGlobals();
		ObjectLock olock(globals);
		BOOST_FOREACH(const Dictionary::Pair& kv, globals) {
			if (!kv.second.IsObjectType<Type>())
				continue;

			Type::Ptr type = kv.second;

			String pname = type->GetPluralName();
			boost::algorithm::to_lower(pname);

			if (uname == pname)
				return type;
		}
	}

	return Type::Ptr();
}

Array::Ptr ScriptUtils::GetObjects(const Type::Ptr& type)
{
	if (!type)
		BOOST_THROW_EXCEPTION(std::invalid_argument("Invalid type: Must not be null"));

	ConfigType *ctype = dynamic_cast<ConfigType *>(type.get());

	if (!ctype)
		BOOST_THROW_EXCEPTION(std::invalid_argument("Invalid type: Type must inherit from 'ConfigObject'"));

	Array::Ptr result = new Array();

	for (const ConfigObject::Ptr& object : ctype->GetObjects())
		result->Add(object);

	return result;
}