| 1 | # The MIT License (MIT) |
| 2 | # |
| 3 | # Copyright (c) 2017 Philippe Proulx <pproulx@efficios.com> |
| 4 | # |
| 5 | # Permission is hereby granted, free of charge, to any person obtaining a copy |
| 6 | # of this software and associated documentation files (the "Software"), to deal |
| 7 | # in the Software without restriction, including without limitation the rights |
| 8 | # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 9 | # copies of the Software, and to permit persons to whom the Software is |
| 10 | # furnished to do so, subject to the following conditions: |
| 11 | # |
| 12 | # The above copyright notice and this permission notice shall be included in |
| 13 | # all copies or substantial portions of the Software. |
| 14 | # |
| 15 | # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 16 | # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 18 | # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 19 | # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 20 | # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 21 | # THE SOFTWARE. |
| 22 | |
| 23 | import bt2 |
| 24 | |
| 25 | |
| 26 | def _check_bool(o): |
| 27 | if not isinstance(o, bool): |
| 28 | raise TypeError("'{}' is not a 'bool' object".format(o.__class__.__name__)) |
| 29 | |
| 30 | |
| 31 | def _check_int(o): |
| 32 | if not isinstance(o, int): |
| 33 | raise TypeError("'{}' is not an 'int' object".format(o.__class__.__name__)) |
| 34 | |
| 35 | |
| 36 | def _check_float(o): |
| 37 | if not isinstance(o, float): |
| 38 | raise TypeError("'{}' is not a 'float' object".format(o.__class__.__name__)) |
| 39 | |
| 40 | |
| 41 | def _check_str(o): |
| 42 | if not isinstance(o, str): |
| 43 | raise TypeError("'{}' is not a 'str' object".format(o.__class__.__name__)) |
| 44 | |
| 45 | |
| 46 | def _check_type(o, expected_type): |
| 47 | if not isinstance(o, expected_type): |
| 48 | raise TypeError("'{}' is not a '{}' object".format(o.__class__.__name__, |
| 49 | expected_type)) |
| 50 | |
| 51 | |
| 52 | def _is_in_int64_range(v): |
| 53 | assert(isinstance(v, int)) |
| 54 | return v >= -(2**63) and v <= (2**63 - 1) |
| 55 | |
| 56 | |
| 57 | def _is_int64(v): |
| 58 | if not isinstance(v, int): |
| 59 | return False |
| 60 | |
| 61 | return _is_in_int64_range(v) |
| 62 | |
| 63 | |
| 64 | def _is_in_uint64_range(v): |
| 65 | assert(isinstance(v, int)) |
| 66 | return v >= 0 and v <= (2**64 - 1) |
| 67 | |
| 68 | |
| 69 | def _is_uint64(v): |
| 70 | if not isinstance(v, int): |
| 71 | return False |
| 72 | |
| 73 | return _is_in_uint64_range(v) |
| 74 | |
| 75 | |
| 76 | def _check_int64(v, msg=None): |
| 77 | _check_int(v) |
| 78 | |
| 79 | if not _is_in_int64_range(v): |
| 80 | if msg is None: |
| 81 | msg = 'expecting a signed 64-bit integral value' |
| 82 | |
| 83 | msg += ' (got {})'.format(v) |
| 84 | raise ValueError(msg) |
| 85 | |
| 86 | |
| 87 | def _check_uint64(v, msg=None): |
| 88 | _check_int(v) |
| 89 | |
| 90 | if not _is_in_uint64_range(v): |
| 91 | if msg is None: |
| 92 | msg = 'expecting an unsigned 64-bit integral value' |
| 93 | |
| 94 | msg += ' (got {})'.format(v) |
| 95 | raise ValueError(msg) |
| 96 | |
| 97 | |
| 98 | def _is_m1ull(v): |
| 99 | return v == 18446744073709551615 |
| 100 | |
| 101 | |
| 102 | def _is_pow2(v): |
| 103 | return v != 0 and ((v & (v - 1)) == 0) |
| 104 | |
| 105 | |
| 106 | def _check_alignment(a): |
| 107 | _check_uint64(a) |
| 108 | |
| 109 | if not _is_pow2(a): |
| 110 | raise ValueError('{} is not a power of two'.format(a)) |
| 111 | |
| 112 | |
| 113 | def _raise_bt2_error(msg): |
| 114 | if msg is None: |
| 115 | raise bt2.Error |
| 116 | else: |
| 117 | raise bt2.Error(msg) |
| 118 | |
| 119 | |
| 120 | def _handle_ret(ret, msg=None): |
| 121 | if int(ret) < 0: |
| 122 | _raise_bt2_error(msg) |
| 123 | |
| 124 | |
| 125 | def _handle_ptr(ptr, msg=None): |
| 126 | if ptr is None: |
| 127 | _raise_bt2_error(msg) |