python-dependency-injector/dependency_injector/injections.pyx

"""Dependency injector injections.

Cython optimized code.
"""

# TODO: replace to cimport
from .utils import is_provider


cdef class Injection:
    """Abstract injection class."""


cdef class PositionalInjection(Injection):
    """Positional injection class."""

    def __init__(self, value):
        """Initializer."""
        self.__value = value
        self.__is_provider = <int>is_provider(value)
        self.__is_delegated = 0  # TODO: use utils.is_delegated()
        self.__call = <int>self.__is_provider == 1 and self.__is_delegated == 0

    def get_value(self):
        """Return injection value."""
        return self.__get_value()


cdef class NamedInjection(Injection):
    """Keyword injection class."""

    def __init__(self, name, value):
        """Initializer."""
        self.__name = name
        self.__value = value
        self.__is_provider = <int>is_provider(value)
        self.__is_delegated = 0  # TODO: use utils.is_delegated()
        self.__call = <int>self.__is_provider == 1 and self.__is_delegated == 0

    def get_name(self):
        """Return injection value."""
        return self.__get_name()

    def get_value(self):
        """Return injection value."""
        return self.__get_value()


cpdef tuple parse_positional_injections(tuple args):
    """Parse positional injections."""
    cdef list injections = list()
    cdef int args_len = len(args)

    cdef object arg
    cdef int index
    cdef PositionalInjection injection

    for index in range(args_len):
        arg = args[index]
        injection = PositionalInjection(arg)
        injections.append(injection)

    return tuple(injections)


cpdef tuple parse_named_injections(dict kwargs):
    """Parse named injections."""
    cdef list injections = list()

    cdef object name
    cdef object arg
    cdef NamedInjection injection

    for name, arg in kwargs.items():
        injection = NamedInjection(name, arg)
        injections.append(injection)

    return tuple(injections)