#!/usr/bin/env python3
# © H2O.ai 2018; -*- encoding: utf-8 -*-
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
#-------------------------------------------------------------------------------
"""
Utility for checking types at runtime.
"""
import typesentry
import warnings
import sys
from typesentry import U
from datatable.utils.terminal import term
_tc = typesentry.Config()
typed = _tc.typed
is_type = _tc.is_type
name_type = _tc.name_type
TTypeError = _tc.TypeError
TValueError = _tc.ValueError
class TImportError(ImportError):
"""Custom (soft) import error."""
_handle_ = TTypeError._handle_
TTypeError.__module__ = "datatable"
TValueError.__module__ = "datatable"
TImportError.__module__ = "datatable"
def check_type(instance, type_hint):
"""Return True if instance corresponds to its type hint."""
return typesentry.Config().is_type(instance, type_hint)