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#ifndef PYUPB_DESCRIPTOR_H__
#define PYUPB_DESCRIPTOR_H__

#include <stdbool.h>

#include "python/python.h"
#include "upb/def.h"

typedef enum {
  kPyUpb_Descriptor = 0,
  kPyUpb_EnumDescriptor = 1,
  kPyUpb_EnumValueDescriptor = 2,
  kPyUpb_FieldDescriptor = 3,
  kPyUpb_FileDescriptor = 4,
  kPyUpb_MethodDescriptor = 5,
  kPyUpb_OneofDescriptor = 6,
  kPyUpb_ServiceDescriptor = 7,
  kPyUpb_Descriptor_Count = 8,
} PyUpb_DescriptorType;

// Given a descriptor object |desc|, returns a Python message class object for
// the msgdef |m|, which must be from the same pool.
PyObject* PyUpb_Descriptor_GetClass(const upb_msgdef* m);

// Returns a Python wrapper object for the given def. This will return an
// existing object if one already exists, otherwise a new object will be
// created.  The caller always owns a ref on the returned object.
PyObject* PyUpb_Descriptor_Get(const upb_msgdef* msgdef);
PyObject* PyUpb_EnumDescriptor_Get(const upb_enumdef* enumdef);
PyObject* PyUpb_FieldDescriptor_Get(const upb_fielddef* field);
PyObject* PyUpb_FileDescriptor_Get(const upb_filedef* file);
PyObject* PyUpb_OneofDescriptor_Get(const upb_oneofdef* oneof);
PyObject* PyUpb_EnumValueDescriptor_Get(const upb_enumvaldef* enumval);
PyObject* PyUpb_Descriptor_GetOrCreateWrapper(const upb_msgdef* msg);
PyObject* PyUpb_ServiceDescriptor_Get(const upb_servicedef* s);

// Returns the underlying |def| for a given wrapper object. The caller must
// have already verified that the given Python object is of the expected type.
const upb_filedef* PyUpb_FileDescriptor_GetDef(PyObject* file);
const upb_fielddef* PyUpb_FieldDescriptor_GetDef(PyObject* file);
const upb_msgdef* PyUpb_Descriptor_GetDef(PyObject* _self);
const void* PyUpb_AnyDescriptor_GetDef(PyObject* _self);

// Returns the underlying |def| for a given wrapper object. The caller must
// have already verified that the given Python object is of the expected type.
const upb_filedef* PyUpb_FileDescriptor_GetDef(PyObject* file);
const void* PyUpb_AnyDescriptor_GetDef(PyObject* _self);

// Module-level init.
bool PyUpb_InitDescriptor(PyObject* m);

#endif   // PYUPB_DESCRIPTOR_H__