mirror of
https://github.com/opencv/opencv.git
synced 2024-11-25 03:30:34 +08:00
150 lines
3.4 KiB
Python
150 lines
3.4 KiB
Python
# -*- coding: utf-8 -*-
|
|
"""
|
|
jinja2.tests
|
|
~~~~~~~~~~~~
|
|
|
|
Jinja test functions. Used with the "is" operator.
|
|
|
|
:copyright: (c) 2010 by the Jinja Team.
|
|
:license: BSD, see LICENSE for more details.
|
|
"""
|
|
import re
|
|
from jinja2.runtime import Undefined
|
|
from jinja2._compat import text_type, string_types, mapping_types
|
|
|
|
|
|
number_re = re.compile(r'^-?\d+(\.\d+)?$')
|
|
regex_type = type(number_re)
|
|
|
|
|
|
test_callable = callable
|
|
|
|
|
|
def test_odd(value):
|
|
"""Return true if the variable is odd."""
|
|
return value % 2 == 1
|
|
|
|
|
|
def test_even(value):
|
|
"""Return true if the variable is even."""
|
|
return value % 2 == 0
|
|
|
|
|
|
def test_divisibleby(value, num):
|
|
"""Check if a variable is divisible by a number."""
|
|
return value % num == 0
|
|
|
|
|
|
def test_defined(value):
|
|
"""Return true if the variable is defined:
|
|
|
|
.. sourcecode:: jinja
|
|
|
|
{% if variable is defined %}
|
|
value of variable: {{ variable }}
|
|
{% else %}
|
|
variable is not defined
|
|
{% endif %}
|
|
|
|
See the :func:`default` filter for a simple way to set undefined
|
|
variables.
|
|
"""
|
|
return not isinstance(value, Undefined)
|
|
|
|
|
|
def test_undefined(value):
|
|
"""Like :func:`defined` but the other way round."""
|
|
return isinstance(value, Undefined)
|
|
|
|
|
|
def test_none(value):
|
|
"""Return true if the variable is none."""
|
|
return value is None
|
|
|
|
|
|
def test_lower(value):
|
|
"""Return true if the variable is lowercased."""
|
|
return text_type(value).islower()
|
|
|
|
|
|
def test_upper(value):
|
|
"""Return true if the variable is uppercased."""
|
|
return text_type(value).isupper()
|
|
|
|
|
|
def test_string(value):
|
|
"""Return true if the object is a string."""
|
|
return isinstance(value, string_types)
|
|
|
|
|
|
def test_mapping(value):
|
|
"""Return true if the object is a mapping (dict etc.).
|
|
|
|
.. versionadded:: 2.6
|
|
"""
|
|
return isinstance(value, mapping_types)
|
|
|
|
|
|
def test_number(value):
|
|
"""Return true if the variable is a number."""
|
|
return isinstance(value, (int, float, complex))
|
|
|
|
|
|
def test_sequence(value):
|
|
"""Return true if the variable is a sequence. Sequences are variables
|
|
that are iterable.
|
|
"""
|
|
try:
|
|
len(value)
|
|
value.__getitem__
|
|
except:
|
|
return False
|
|
return True
|
|
|
|
|
|
def test_sameas(value, other):
|
|
"""Check if an object points to the same memory address than another
|
|
object:
|
|
|
|
.. sourcecode:: jinja
|
|
|
|
{% if foo.attribute is sameas false %}
|
|
the foo attribute really is the `False` singleton
|
|
{% endif %}
|
|
"""
|
|
return value is other
|
|
|
|
|
|
def test_iterable(value):
|
|
"""Check if it's possible to iterate over an object."""
|
|
try:
|
|
iter(value)
|
|
except TypeError:
|
|
return False
|
|
return True
|
|
|
|
|
|
def test_escaped(value):
|
|
"""Check if the value is escaped."""
|
|
return hasattr(value, '__html__')
|
|
|
|
|
|
TESTS = {
|
|
'odd': test_odd,
|
|
'even': test_even,
|
|
'divisibleby': test_divisibleby,
|
|
'defined': test_defined,
|
|
'undefined': test_undefined,
|
|
'none': test_none,
|
|
'lower': test_lower,
|
|
'upper': test_upper,
|
|
'string': test_string,
|
|
'mapping': test_mapping,
|
|
'number': test_number,
|
|
'sequence': test_sequence,
|
|
'iterable': test_iterable,
|
|
'callable': test_callable,
|
|
'sameas': test_sameas,
|
|
'escaped': test_escaped
|
|
}
|