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# ------------------------------------------------------------------------
# Grounding DINO
# url: https://github.com/IDEA-Research/GroundingDINO
# Copyright (c) 2023 IDEA. All Rights Reserved.
# Licensed under the Apache License, Version 2.0 [see LICENSE for details]
# ------------------------------------------------------------------------
# -*- coding: utf-8 -*-
# @Author: Yihao Chen
# @Date:   2021-08-16 16:03:17
# @Last Modified by:   Shilong Liu
# @Last Modified time: 2022-01-23 15:26
# modified from mmcv

import inspect
from functools import partial


class Registry(object):
    def __init__(self, name):
        self._name = name
        self._module_dict = dict()

    def __repr__(self):
        format_str = self.__class__.__name__ + "(name={}, items={})".format(
            self._name, list(self._module_dict.keys())
        )
        return format_str

    def __len__(self):
        return len(self._module_dict)

    @property
    def name(self):
        return self._name

    @property
    def module_dict(self):
        return self._module_dict

    def get(self, key):
        return self._module_dict.get(key, None)

    def registe_with_name(self, module_name=None, force=False):
        return partial(self.register, module_name=module_name, force=force)

    def register(self, module_build_function, module_name=None, force=False):
        """Register a module build function.
        Args:
            module (:obj:`nn.Module`): Module to be registered.
        """
        if not inspect.isfunction(module_build_function):
            raise TypeError(
                "module_build_function must be a function, but got {}".format(
                    type(module_build_function)
                )
            )
        if module_name is None:
            module_name = module_build_function.__name__
        if not force and module_name in self._module_dict:
            raise KeyError("{} is already registered in {}".format(module_name, self.name))
        self._module_dict[module_name] = module_build_function

        return module_build_function


MODULE_BUILD_FUNCS = Registry("model build functions")