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# tag: cpp, no-cpp-locals
cdef extern from "cpp_nested_classes_support.h":
cdef cppclass A:
cppclass B:
int square(int)
cppclass C:
int cube(int)
B* createB()
ctypedef int my_int
@staticmethod
my_int negate(my_int)
cdef cppclass TypedClass[T]:
ctypedef T MyType
struct MyStruct:
T typed_value
int int_value
union MyUnion:
T typed_value
int int_value
enum MyEnum:
value
cdef cppclass SpecializedTypedClass(TypedClass[double]):
pass
cdef cppclass AA:
cppclass BB:
int square(int x):
return x * x
cppclass CC:
int cube(int x):
return x * x * x
BB* createB():
return new BB()
ctypedef int my_int
@staticmethod
my_int negate(my_int x):
return -x
cdef cppclass DD(AA):
ctypedef int my_other_int
ctypedef A AliasA1
ctypedef AliasA1 AliasA2
def test_nested_classes():
"""
>>> test_nested_classes()
"""
cdef A a
cdef A.B b
assert b.square(3) == 9
cdef A.B.C c
assert c.cube(3) == 27
cdef A.B *b_ptr = a.createB()
assert b_ptr.square(4) == 16
del b_ptr
def test_nested_defined_classes():
"""
>>> test_nested_defined_classes()
"""
cdef AA a
cdef AA.BB b
assert b.square(3) == 9
cdef AA.BB.CC c
assert c.cube(3) == 27
cdef AA.BB *b_ptr = a.createB()
assert b_ptr.square(4) == 16
del b_ptr
def test_nested_inherited_classes():
"""
>>> test_nested_inherited_classes()
"""
cdef DD.BB b
assert b.square(3) == 9
def test_nested_typedef(py_x):
"""
>>> test_nested_typedef(5)
"""
cdef A.my_int x = py_x
assert A.negate(x) == -py_x
def test_nested_defined_typedef(py_x):
"""
>>> test_nested_typedef(5)
"""
cdef AA.my_int x = py_x
assert AA.negate(x) == -py_x
def test_typedef_for_nested(py_x):
"""
>>> test_typedef_for_nested(5)
"""
cdef AliasA1.my_int x = py_x
assert A.negate(x) == -py_x
def test_typedef_for_nested_deep(py_x):
"""
>>> test_typedef_for_nested_deep(5)
"""
cdef AliasA2.my_int x = py_x
assert A.negate(x) == -py_x
def test_typed_nested_typedef(x):
"""
>>> test_typed_nested_typedef(4)
(4, 4.0)
"""
cdef TypedClass[int].MyType ix = x
cdef TypedClass[double].MyType dx = x
return ix, dx
def test_nested_enum(TypedClass[double].MyEnum x):
"""
>>> test_nested_enum(4)
False
"""
return x == 0
def test_nested_union(x):
"""
>>> test_nested_union(2)
2.0
"""
cdef TypedClass[double].MyUnion u
u.int_value = x
assert u.int_value == x
u.typed_value = x
return u.typed_value
def test_nested_struct(x):
"""
>>> test_nested_struct(2)
2.0
"""
cdef TypedClass[double].MyStruct s
s.int_value = x
assert s.int_value == x
s.typed_value = x
return s.typed_value
def test_typed_nested_sub_typedef(x):
"""
>>> test_typed_nested_sub_typedef(4)
4.0
"""
cdef SpecializedTypedClass.MyType dx = x
return dx
def test_nested_sub_enum(SpecializedTypedClass.MyEnum x):
"""
>>> test_nested_sub_enum(4)
False
"""
return x == 0
def test_nested_sub_union(x):
"""
>>> test_nested_sub_union(2)
2.0
"""
cdef SpecializedTypedClass.MyUnion u
u.int_value = x
assert u.int_value == x
u.typed_value = x
return u.typed_value
def test_nested_sub_struct(x):
"""
>>> test_nested_sub_struct(2)
2.0
"""
cdef SpecializedTypedClass.MyStruct s
s.int_value = x
assert s.int_value == x
s.typed_value = x
return s.typed_value
cimport cpp_nested_names
cimport libcpp.string
from cython.operator cimport dereference as deref, preincrement as inc
def test_nested_names():
"""
>>> test_nested_names()
Nested
NestedNested
C
y
t
h
o
n
"""
cdef cpp_nested_names.Outer.Nested n = cpp_nested_names.Outer.get()
cdef cpp_nested_names.Outer.Nested.NestedNested nn = n.get()
print(n.get_str().decode('ascii'))
print(nn.get_str().decode('ascii'))
cdef libcpp.string.string s = "Cython"
cdef libcpp.string.string.iterator i = s.begin()
while i != s.end():
print(chr(deref(i)))
inc(i)
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