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# mode: run
# tag: annotation_typing, pure3.0, mypy
import cython
is_compiled = cython.compiled
MyUnion = cython.union(n=cython.int, x=cython.double)
MyStruct = cython.struct(is_integral=cython.bint, data=MyUnion)
MyStruct2 = cython.typedef(MyStruct[2]) # type: cython.StructType
@cython.ccall # cpdef => C return type
def test_return_type(n: cython.int) -> cython.double:
"""
>>> test_return_type(389)
389.0
"""
assert cython.typeof(n) == 'int', cython.typeof(n)
return n if is_compiled else float(n)
def test_struct(n: cython.int, x: cython.double) -> MyStruct2:
"""
>>> test_struct(389, 1.64493)
(389, 1.64493)
>>> d = test_struct.__annotations__
>>> sorted(d)
['n', 'return', 'x']
"""
assert cython.typeof(n) == 'int', cython.typeof(n)
if is_compiled:
assert cython.typeof(x) == 'double', cython.typeof(x) # C double
else:
assert cython.typeof(x) == 'float', cython.typeof(x) # Python float
a = cython.declare(MyStruct2)
a[0] = MyStruct(is_integral=True, data=MyUnion(n=n))
a[1] = MyStruct(is_integral=False, data={'x': x})
return a[0].data.n, a[1].data.x
@cython.ccall
def c_call(x) -> cython.double:
return x
def call_ccall(x):
"""
Test that a declared return type is honoured when compiled.
>>> result, return_type = call_ccall(1)
>>> (not is_compiled and 'double') or return_type
'double'
>>> (is_compiled and 'int') or return_type
'int'
>>> (not is_compiled and 1.0) or result
1.0
>>> (is_compiled and 1) or result
1
"""
ret = c_call(x)
return ret, cython.typeof(ret)
@cython.cfunc
@cython.inline
def cdef_inline(x) -> cython.double:
return x + 1
def call_cdef_inline(x):
"""
>>> result, return_type = call_cdef_inline(1)
>>> (not is_compiled and 'float') or type(result).__name__
'float'
>>> (not is_compiled and 'double') or return_type
'double'
>>> (is_compiled and 'int') or return_type
'int'
>>> result == 2.0 or result
True
"""
ret = cdef_inline(x)
return ret, cython.typeof(ret)
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