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# ticket: 2633
# mode: run
# tag: cpp, cpp17, werror
from libcpp cimport bool
from libcpp.any cimport any, any_cast
from libcpp.pair cimport pair
from cython.operator cimport typeid
def simple_test():
"""
>>> simple_test()
"""
cdef any u
assert not u.has_value()
v = new any(u)
assert not v.has_value()
u = 42
assert u.has_value()
v = new any(u)
assert v.has_value()
def reset_test():
"""
>>> reset_test()
"""
cdef any a
assert not a.has_value()
a = 42
assert a.has_value()
a.reset()
assert not a.has_value()
def cast_test():
"""
>>> cast_test()
"""
cdef any a
a = 1
assert a.type() == typeid(int)
assert any_cast[int](a) == 1
a = 3.14
assert a.type() == typeid(double)
assert any_cast[double](a) == 3.14
a = <bool>(True)
assert a.type() == typeid(bool)
assert any_cast[bool](a) == True
# bad cast
try:
a = 1
b = any_cast[double](a)
except TypeError:
pass
def emplace_test():
"""
>>> emplace_test()
"""
cdef any a
a = 42
assert any_cast[int](a) == 42
a.emplace[pair[int,int]](1,2)
assert any_cast[pair[int,int]](a) == pair[int,int](1,2)
a.reset()
assert not a.has_value()
a.emplace[pair[int,int]](1,2)
assert any_cast[pair[int,int]](a) == pair[int,int](1,2)
def swap_test():
"""
>>> swap_test()
"""
cdef any a, b
a = 42
b = "hello"
a.swap(b)
assert any_cast[str](a) == "hello"
assert any_cast[int](b) == 42
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