1#  Copyright 2008-2015 Nokia Networks
2#  Copyright 2016-     Robot Framework Foundation
3#
4#  Licensed under the Apache License, Version 2.0 (the "License");
5#  you may not use this file except in compliance with the License.
6#  You may obtain a copy of the License at
7#
8#      http://www.apache.org/licenses/LICENSE-2.0
9#
10#  Unless required by applicable law or agreed to in writing, software
11#  distributed under the License is distributed on an "AS IS" BASIS,
12#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13#  See the License for the specific language governing permissions and
14#  limitations under the License.
15
16from collections import Mapping, UserString
17from io import IOBase
18
19from .platform import RERAISED_EXCEPTIONS
20
21
22def is_integer(item):
23    return isinstance(item, int)
24
25
26def is_number(item):
27    return isinstance(item, (int, float))
28
29
30def is_bytes(item):
31    return isinstance(item, (bytes, bytearray))
32
33
34def is_string(item):
35    return isinstance(item, str)
36
37
38def is_unicode(item):
39    return isinstance(item, str)
40
41
42def is_list_like(item):
43    if isinstance(item, (str, bytes, bytearray, UserString, IOBase)):
44        return False
45    try:
46        iter(item)
47    except RERAISED_EXCEPTIONS:
48        raise
49    except:
50        return False
51    else:
52        return True
53
54
55def is_dict_like(item):
56    return isinstance(item, Mapping)
57
58
59def type_name(item):
60    if isinstance(item, IOBase):
61        return 'file'
62    cls = item.__class__ if hasattr(item, '__class__') else type(item)
63    named_types = {str: 'string', bool: 'boolean', int: 'integer',
64                   type(None): 'None', dict: 'dictionary', type: 'class'}
65    return named_types.get(cls, cls.__name__)
66