genienlp/decanlp/tasks/registry.py

#
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import logging
from .base import BaseTask


logger = logging.getLogger(__name__)


class TaskRegistry:
    """
    A container for all the tasks supported by the library
    """

    def __init__(self):
        self.store = dict()

    def __setitem__(self, name, cls):
        if name in self.store:
            raise ValueError(f'Duplicate task ${name}')
        self.store[name] = cls

    def __getitem__(self, name):
        if name not in self.store:
            logger.warning(f'Unrecognized task ${name}, using generic code')
            self.store[name] = BaseTask
        return self.store[name]

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

    def __iter__(self):
        return iter(self.store)


_registry = TaskRegistry()
_registry['generic'] = BaseTask

def task_name_to_cls_name(name):
    return name.split('.')[0]


def register_task(name):
    def decorator(cls):
        _registry[name] = cls
    return decorator


def get_tasks(names, args):
    tasks = {
        name: (_registry[task_name_to_cls_name(name)])(name, args) for name in names
    }
    return [tasks[name] for name in names]