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import py, os, sys
from pytest import mark, raises
from .support import setup_make
noboost = False
if not (os.path.exists(os.path.join(os.path.sep, 'usr', 'include', 'boost')) or \
os.path.exists(os.path.join(os.path.sep, 'usr', 'local', 'include', 'boost'))):
noboost = True
@mark.skipif(noboost == True, reason="boost not found")
class AppTestBOOSTANY:
spaceconfig = dict(usemodules=['_cppyy', '_rawffi', 'itertools'])
def setup_class(cls):
cls.space.appexec([], """():
import ctypes, _cppyy
_cppyy._post_import_startup()
_cppyy.gbl.gInterpreter.Declare('#include "boost/any.hpp"')
""")
def test01_any_class(self):
"""Availability of boost::any"""
import _cppyy as cppyy
assert cppyy.gbl.boost.any
std = cppyy.gbl.std
any = cppyy.gbl.boost.any
assert std.list[any]
def test02_any_usage(self):
"""boost::any assignment and casting"""
import _cppyy as cppyy
assert cppyy.gbl.boost
std = cppyy.gbl.std
boost = cppyy.gbl.boost
val = boost.any()
# test both by-ref and by rvalue
v = std.vector[int]()
val.__assign__(v)
val.__assign__(std.move(std.vector[int](range(100))))
assert val.type() == cppyy.typeid(std.vector[int])
extract = boost.any_cast[std.vector[int]](val)
assert type(extract) is std.vector[int]
assert len(extract) == 100
extract += range(100)
assert len(extract) == 200
val.__assign__(std.move(extract)) # move forced
#assert len(extract) == 0 # not guaranteed by the standard
# TODO: we hit boost::any_cast<int>(boost::any* operand) instead
# of the reference version which raises
boost.any_cast.__useffi__ = False
try:
# raises(Exception, boost.any_cast[int], val)
assert not boost.any_cast[int](val)
except Exception:
# getting here is good, too ...
pass
extract = boost.any_cast[std.vector[int]](val)
assert len(extract) == 200
@mark.skipif(noboost == True, reason="boost not found")
class AppTestBOOSTOPERATORS:
spaceconfig = dict(usemodules=['_cppyy', '_rawffi', 'itertools'])
def setup_class(cls):
cls.space.appexec([], """():
import ctypes, _cppyy
_cppyy._post_import_startup()
_cppyy.gbl.gInterpreter.Declare('#include "boost/operators.hpp"')
""")
def test01_ordered(self):
"""ordered_field_operators as base used to crash"""
import _cppyy as cppyy
cppyy.gbl.gInterpreter.Declare('#include "gmpxx.h"')
cppyy.gbl.gInterpreter.Declare("""
namespace boost_test {
class Derived : boost::ordered_field_operators<Derived>, boost::ordered_field_operators<Derived, mpq_class> {};
}
""")
assert cppyy.gbl.boost_test.Derived
@mark.skipif(noboost == True, reason="boost not found")
class AppTestBOOSTVARIANT:
spaceconfig = dict(usemodules=['_cppyy', '_rawffi', 'itertools'])
def setup_class(cls):
cls.space.appexec([], """():
import ctypes, _cppyy
_cppyy._post_import_startup()
_cppyy.gbl.gInterpreter.Declare('#include "boost/variant/variant.hpp"')
_cppyy.gbl.gInterpreter.Declare('#include "boost/variant/get.hpp"')
""")
def test01_variant_usage(self):
"""boost::variant usage"""
# as posted on stackoverflow as example
import _cppyy as cppyy
try:
cpp = cppyy.gbl
except:
pass
cpp = cppyy.gbl
std = cpp.std
boost = cpp.boost
cppyy.gbl.gInterpreter.Declare("""namespace BV {
class A { };
class B { };
class C { }; } """)
VariantType = boost.variant['BV::A, BV::B, BV::C']
VariantTypeList = std.vector[VariantType]
v = VariantTypeList()
v.push_back(VariantType(cpp.BV.A()))
assert v.back().which() == 0
v.push_back(VariantType(cpp.BV.B()))
assert v.back().which() == 1
v.push_back(VariantType(cpp.BV.C()))
assert v.back().which() == 2
assert type(boost.get['BV::A'](v[0])) == cpp.BV.A
raises(Exception, boost.get['BV::B'], v[0])
assert type(boost.get['BV::B'](v[1])) == cpp.BV.B
assert type(boost.get['BV::C'](v[2])) == cpp.BV.C
@mark.skipif(noboost == True, reason="boost not found")
class AppTestBOOSTERASURE:
spaceconfig = dict(usemodules=['_cppyy', '_rawffi', 'itertools'])
def setup_class(cls):
cls.space.appexec([], """():
import ctypes, _cppyy
_cppyy._post_import_startup()
_cppyy.gbl.gInterpreter.Declare('#include "boost/type_erasure/any.hpp"')
_cppyy.gbl.gInterpreter.Declare('#include "boost/type_erasure/member.hpp"')
""")
def test01_erasure_usage(self):
"""boost::type_erasure usage"""
import _cppyy as cppyy
cppyy.gbl.gInterpreter.Declare("""
BOOST_TYPE_ERASURE_MEMBER((has_member_f), f, 0)
using LengthsInterface = boost::mpl::vector<
boost::type_erasure::copy_constructible<>,
has_member_f<std::vector<int>() const>>;
using Lengths = boost::type_erasure::any<LengthsInterface>;
struct Unerased {
std::vector<int> f() const { return std::vector<int>{}; }
};
Lengths lengths() {
return Unerased{};
}
""")
assert cppyy.gbl.lengths() is not None
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