-# The MIT License (MIT)
-#
-# Copyright (c) 2017 Philippe Proulx <pproulx@efficios.com>
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documentation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to whom the Software is
-# furnished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-
-import bt2
-
-
-def _check_bool(o):
- if not isinstance(o, bool):
- raise TypeError("'{}' is not a 'bool' object".format(o.__class__.__name__))
-
-
-def _check_int(o):
- if not isinstance(o, int):
- raise TypeError("'{}' is not an 'int' object".format(o.__class__.__name__))
-
-
-def _check_float(o):
- if not isinstance(o, float):
- raise TypeError("'{}' is not a 'float' object".format(o.__class__.__name__))
-
-
-def _check_str(o):
- if not isinstance(o, str):
- raise TypeError("'{}' is not a 'str' object".format(o.__class__.__name__))
-
-
-def _check_type(o, expected_type):
- if not isinstance(o, expected_type):
- raise TypeError("'{}' is not a '{}' object".format(o.__class__.__name__,
- expected_type))
-
-
-def _is_int64(v):
- _check_int(v)
- return v >= -(2**63) and v <= (2**63 - 1)
-
-
-def _is_uint64(v):
- _check_int(v)
- return v >= 0 and v <= (2**64 - 1)
-
-
-def _check_int64(v, msg=None):
- if not _is_int64(v):
- if msg is None:
- msg = 'expecting a signed 64-bit integral value'
-
- msg += ' (got {})'.format(v)
- raise ValueError(msg)
-
-
-def _check_uint64(v, msg=None):
- if not _is_uint64(v):
- if msg is None:
- msg = 'expecting an unsigned 64-bit integral value'
-
- msg += ' (got {})'.format(v)
- raise ValueError(msg)
-
-
-def _is_m1ull(v):
- return v == 18446744073709551615
-
-
-def _is_pow2(v):
- return v != 0 and ((v & (v - 1)) == 0)
-
-
-def _check_alignment(a):
- _check_uint64(a)
-
- if not _is_pow2(a):
- raise ValueError('{} is not a power of two'.format(a))
-
-
-def _handle_ret(ret, msg=None):
- if int(ret) < 0:
- if msg is None:
- error = bt2.Error()
- else:
- error = bt2.Error(msg)
-
- raise error
-
-
-def _handle_ptr(ptr, msg=None):
- if ptr is None:
- if msg is None:
- error = bt2.Error()
- else:
- error = bt2.Error(msg)
-
- raise error