protobuf_visit.hpp File Reference

Detailed Description

Utilities for visiting the fields of protobufs.

Definition in file protobuf_visit.hpp.

Go to the source code of this file.

#include <mutex>
#include <string_view>
#include <vector>
#include <google/protobuf/message.h>
#include <userver/engine/shared_mutex.hpp>
#include <userver/utils/assert.hpp>
#include <userver/utils/function_ref.hpp>
#include <userver/utils/impl/internal_tag_fwd.hpp>
#include <userver/utils/span.hpp>

Classes
class	ugrpc::VisitorCompiler
	Base class for BaseVisitor. Constructs and manages the descriptor graph to collect the data about the messages and enable the visitors to find all selected structures. More...
class	ugrpc::BaseVisitor< Callback >
	Base class for FieldsVisitor and MessagesVisitor. Provides the interface and contains common code to use the data collected in the VisitorCompiler. More...
class	ugrpc::FieldsVisitor
	Collects knowledge of the structure of the protobuf messages allowing for efficient loops over fields to apply a callback to the ones selected by the 'selector' function. More...
class	ugrpc::MessagesVisitor
	Collects knowledge of the structure of the protobuf messages allowing for efficient loops over nested messages to apply a callback to the ones selected by the 'selector' function. More...

Namespaces
namespace	ugrpc
	Asynchronous gRPC driver.

Typedefs
using	ugrpc::MessageVisitCallback = utils::function_ref<void(google::protobuf::Message&)>
using	ugrpc::FieldVisitCallback
using	ugrpc::DescriptorList = std::vector<const google::protobuf::Descriptor*>
using	ugrpc::FieldDescriptorList = std::vector<const google::protobuf::FieldDescriptor*>

Functions
void	ugrpc::VisitFields (google::protobuf::Message &message, FieldVisitCallback callback)
	Execute a callback for all non-empty fields of the message.
void	ugrpc::VisitMessagesRecursive (google::protobuf::Message &message, MessageVisitCallback callback)
	Execute a callback for the message and its non-empty submessages.
void	ugrpc::VisitFieldsRecursive (google::protobuf::Message &message, FieldVisitCallback callback)
	Execute a callback for all fields of the message and its non-empty submessages.
void	ugrpc::VisitNestedMessage (google::protobuf::Message &message, const google::protobuf::FieldDescriptor &field, MessageVisitCallback callback)
	Execute a callback for the submessage contained in the given field.
FieldDescriptorList	ugrpc::GetFieldDescriptors (const google::protobuf::Descriptor &descriptor)
	Get the descriptors of fields in the message.
DescriptorList	ugrpc::GetNestedMessageDescriptors (const google::protobuf::Descriptor &descriptor)
	Get the descriptors of current and nested messages.
const google::protobuf::Descriptor *	ugrpc::FindGeneratedMessage (std::string_view name)
	Find a generated type by name.
const google::protobuf::FieldDescriptor *	ugrpc::FindField (const google::protobuf::Descriptor *descriptor, std::string_view field)
	Find the field of a generated type by name.