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cdef struct Point:
double x
double y
int color
def test_constructor(x, y, int color):
"""
>>> sorted(test_constructor(1,2,255).items())
[('color', 255), ('x', 1.0), ('y', 2.0)]
>>> try: test_constructor(1,None,255)
... except TypeError: pass
"""
cdef Point p = Point(x, y, color)
return p
def return_constructor(x, y, int color):
"""
>>> sorted(return_constructor(1,2,255).items())
[('color', 255), ('x', 1.0), ('y', 2.0)]
>>> try: return_constructor(1, None, 255)
... except TypeError: pass
"""
return Point(x, y, color)
def test_constructor_kwds(x, y, color):
"""
>>> sorted(test_constructor_kwds(1.25, 2.5, 128).items())
[('color', 128), ('x', 1.25), ('y', 2.5)]
>>> test_constructor_kwds(1.25, 2.5, None) # doctest: +ELLIPSIS
Traceback (most recent call last):
TypeError:... int...
"""
cdef Point p = Point(x=x, y=y, color=color)
return p
def return_constructor_kwds(double x, y, color):
"""
>>> sorted(return_constructor_kwds(1.25, 2.5, 128).items())
[('color', 128), ('x', 1.25), ('y', 2.5)]
>>> return_constructor_kwds(1.25, 2.5, None) # doctest: +ELLIPSIS
Traceback (most recent call last):
TypeError:... int...
"""
return Point(x=x, y=y, color=color)
def test_dict_construction(x, y, color):
"""
>>> sorted(test_dict_construction(4, 5, 64).items())
[('color', 64), ('x', 4.0), ('y', 5.0)]
>>> try: test_dict_construction("foo", 5, 64)
... except TypeError: pass
"""
cdef Point p = {'color': color, 'x': x, 'y': y}
return p
def test_list_construction(x, y, color):
"""
>>> sorted(test_list_construction(4, 5, 64).items())
[('color', 64), ('x', 4.0), ('y', 5.0)]
>>> try: test_list_construction("foo", 5, 64)
... except TypeError: pass
"""
cdef Point p = [x, y, color]
return p
'''
# FIXME: make this work
def test_tuple_construction(x, y, color):
"""
>>> sorted(test_tuple_construction(4, 5, 64).items())
[('color', 64), ('x', 4.0), ('y', 5.0)]
>>> try: test_tuple_construction("foo", 5, 64)
... except TypeError: pass
"""
cdef Point p = (x, y, color)
return p
'''
cdef union int_or_float:
int n
double x
def test_union_constructor(n,x):
"""
>>> test_union_constructor(1, None)
1
>>> test_union_constructor(None, 2.0)
2.0
"""
cdef int_or_float u
if n is None:
u = int_or_float(x=x)
return u.x
else:
u = int_or_float(n=n)
return u.n
cdef struct with_pointers:
bint is_integral
int_or_float data
void* ptr
def test_pointers(int n, double x):
"""
>>> test_pointers(100, 2.71828)
100
2.71828
True
"""
cdef with_pointers a = [True, {'n': n}, NULL]
cdef with_pointers b = with_pointers(False, {'x': x}, NULL)
print a.data.n
print b.data.x
print a.ptr == b.ptr == NULL
cdef struct MyStruct:
char c
int i
float f
char *s
bhello = b"hello" # must hold a C reference in PyPy
def test_obj_to_struct(MyStruct mystruct):
"""
>>> test_obj_to_struct(dict(c=10, i=20, f=6.7, s=bhello))
c=10 i=20 f=6.70 s=hello
>>> test_obj_to_struct(None)
Traceback (most recent call last):
...
TypeError: Expected a mapping, got NoneType
>>> test_obj_to_struct(dict(s=b"world"))
Traceback (most recent call last):
...
ValueError: No value specified for struct attribute 'c'
>>> test_obj_to_struct(dict(c=b"world"))
Traceback (most recent call last):
...
TypeError: an integer is required
"""
print 'c=%d i=%d f=%.2f s=%s' % (mystruct.c, mystruct.i, mystruct.f, mystruct.s.decode('ascii'))
cdef struct NestedStruct:
MyStruct mystruct
double d
def test_nested_obj_to_struct(NestedStruct nested):
"""
>>> test_nested_obj_to_struct(dict(mystruct=dict(c=10, i=20, f=6.7, s=bhello), d=4.5))
c=10 i=20 f=6.70 s=hello d=4.50
>>> test_nested_obj_to_struct(dict(d=7.6))
Traceback (most recent call last):
...
ValueError: No value specified for struct attribute 'mystruct'
>>> test_nested_obj_to_struct(dict(mystruct={}, d=7.6))
Traceback (most recent call last):
...
ValueError: No value specified for struct attribute 'c'
"""
print 'c=%d i=%d f=%.2f s=%s d=%.2f' % (nested.mystruct.c,
nested.mystruct.i,
nested.mystruct.f,
nested.mystruct.s.decode('UTF-8'),
nested.d)
cdef struct OverriddenCname:
int x "not_x"
def test_obj_to_struct_cnames(OverriddenCname s):
"""
>>> test_obj_to_struct_cnames({ 'x': 1 })
1
"""
print(s.x)
def test_struct_to_obj_cnames():
"""
>>> test_struct_to_obj_cnames()
{'x': 2}
"""
return OverriddenCname(2)
cdef struct ArrayFieldStruct:
int arr[4]
def test_array_field_init():
"""
>>> test_array_field_init()
[1, 2, 3, 4]
"""
cdef ArrayFieldStruct s = ArrayFieldStruct([1, 2, 3, 4])
print(s.arr);
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