| paul@6 | 1 | #!/usr/bin/env python |
| paul@6 | 2 | |
| paul@6 | 3 | """ |
| paul@6 | 4 | Core objects. |
| paul@6 | 5 | |
| paul@107 | 6 | Copyright (C) 2015, 2016 Paul Boddie <paul@boddie.org.uk> |
| paul@6 | 7 | |
| paul@6 | 8 | This program is free software; you can redistribute it and/or modify it under |
| paul@6 | 9 | the terms of the GNU General Public License as published by the Free Software |
| paul@6 | 10 | Foundation; either version 3 of the License, or (at your option) any later |
| paul@6 | 11 | version. |
| paul@6 | 12 | |
| paul@6 | 13 | This program is distributed in the hope that it will be useful, but WITHOUT |
| paul@6 | 14 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
| paul@6 | 15 | FOR A PARTICULAR PURPOSE. See the GNU General Public License for more |
| paul@6 | 16 | details. |
| paul@6 | 17 | |
| paul@6 | 18 | You should have received a copy of the GNU General Public License along with |
| paul@6 | 19 | this program. If not, see <http://www.gnu.org/licenses/>. |
| paul@6 | 20 | """ |
| paul@6 | 21 | |
| paul@230 | 22 | from native import _get_using |
| paul@230 | 23 | |
| paul@6 | 24 | class object: |
| paul@107 | 25 | |
| paul@107 | 26 | "The root class of all objects except functions." |
| paul@107 | 27 | |
| paul@6 | 28 | def __init__(self): |
| paul@230 | 29 | |
| paul@6 | 30 | "No-operation." |
| paul@230 | 31 | |
| paul@6 | 32 | pass |
| paul@107 | 33 | |
| paul@6 | 34 | def __bool__(self): |
| paul@230 | 35 | |
| paul@6 | 36 | "Objects are true by default." |
| paul@230 | 37 | |
| paul@6 | 38 | return True |
| paul@6 | 39 | |
| paul@230 | 40 | def __str__(self): |
| paul@230 | 41 | |
| paul@230 | 42 | "Return a string representation." |
| paul@230 | 43 | |
| paul@254 | 44 | return str(buffer(["<", self.__name__, " instance>"])) |
| paul@230 | 45 | |
| paul@230 | 46 | __repr__ = __str__ |
| paul@230 | 47 | |
| paul@269 | 48 | class module: |
| paul@269 | 49 | |
| paul@269 | 50 | "The class of module objects." |
| paul@269 | 51 | |
| paul@271 | 52 | def __init__(self): |
| paul@271 | 53 | |
| paul@271 | 54 | """ |
| paul@271 | 55 | Reserve special attributes for module instances. |
| paul@271 | 56 | """ |
| paul@271 | 57 | |
| paul@271 | 58 | self.__file__ = None |
| paul@271 | 59 | self.__mname__ = None |
| paul@271 | 60 | |
| paul@269 | 61 | def __str__(self): |
| paul@269 | 62 | |
| paul@269 | 63 | "Return a string representation." |
| paul@269 | 64 | |
| paul@271 | 65 | return self.__mname__ |
| paul@269 | 66 | |
| paul@269 | 67 | __repr__ = __str__ |
| paul@269 | 68 | |
| paul@107 | 69 | class function: |
| paul@107 | 70 | |
| paul@107 | 71 | """ |
| paul@107 | 72 | The class of all function objects. |
| paul@107 | 73 | Note that as a special case, function does not inherit from object. |
| paul@107 | 74 | """ |
| paul@107 | 75 | |
| paul@6 | 76 | def __init__(self): |
| paul@6 | 77 | |
| paul@107 | 78 | """ |
| paul@107 | 79 | Reserve special attributes for function instances. |
| paul@107 | 80 | """ |
| paul@6 | 81 | |
| paul@6 | 82 | self.__fn__ = None |
| paul@6 | 83 | self.__args__ = None |
| paul@251 | 84 | self.__fname__ = None |
| paul@6 | 85 | |
| paul@107 | 86 | def __bool__(self): |
| paul@230 | 87 | |
| paul@107 | 88 | "Functions are true by default." |
| paul@230 | 89 | |
| paul@107 | 90 | return True |
| paul@107 | 91 | |
| paul@230 | 92 | def __str__(self): |
| paul@230 | 93 | |
| paul@230 | 94 | "Return a string representation." |
| paul@230 | 95 | |
| paul@251 | 96 | return self.__fname__ |
| paul@230 | 97 | |
| paul@230 | 98 | __repr__ = __str__ |
| paul@230 | 99 | |
| paul@274 | 100 | class type: |
| paul@107 | 101 | |
| paul@274 | 102 | """ |
| paul@274 | 103 | The class of all classes. Methods of this class do not treat contexts as |
| paul@274 | 104 | instances, even though classes are meant to be instances of this class. |
| paul@274 | 105 | Instead, contexts are either classes or instances. |
| paul@274 | 106 | """ |
| paul@107 | 107 | |
| paul@274 | 108 | def __str__(self): |
| paul@274 | 109 | |
| paul@274 | 110 | "Return a string representation." |
| paul@230 | 111 | |
| paul@274 | 112 | return self.__name__ |
| paul@274 | 113 | |
| paul@274 | 114 | __repr__ = __str__ |
| paul@6 | 115 | |
| paul@233 | 116 | class BaseException: |
| paul@233 | 117 | |
| paul@233 | 118 | "The root of all exception types." |
| paul@233 | 119 | |
| paul@233 | 120 | pass |
| paul@233 | 121 | |
| paul@6 | 122 | class Exception(BaseException): pass |
| paul@260 | 123 | class MemoryError(Exception): pass |
| paul@233 | 124 | class TypeError(Exception): pass |
| paul@193 | 125 | class UnboundMethodInvocation(Exception): pass |
| paul@6 | 126 | class Warning(object): pass |
| paul@6 | 127 | |
| paul@230 | 128 | def get_using(callable, instance): |
| paul@230 | 129 | |
| paul@230 | 130 | "Return 'callable' bound to 'instance'." |
| paul@230 | 131 | |
| paul@230 | 132 | return _get_using(callable, instance) |
| paul@121 | 133 | |
| paul@6 | 134 | # vim: tabstop=4 expandtab shiftwidth=4 |
