Jason Rhinelander 813d7e8687 Add movable cast support to type casters ... This commit allows type_casters to allow their local values to be moved away, rather than copied, when the type caster instance itself is an rvalue. This only applies (automatically) to type casters using PYBIND11_TYPE_CASTER; the generic type type casters don't own their own pointer, and various value casters (e.g. std::string, std::pair, arithmetic types) already cast to an rvalue (i.e. they return by value). This updates various calling code to attempt to get a movable value whenever the value is itself coming from a type caster about to be destroyed: for example, when constructing an std::pair or various stl.h containers. For types that don't support value moving, the cast_op falls back to an lvalue cast. There wasn't an obvious place to add the tests, so I added them to test_copy_move_policies, but also renamed it to drop the _policies as it now tests more than just policies.		2017-05-24 13:09:31 -04:00
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pybind11	Add movable cast support to type casters	2017-05-24 13:09:31 -04:00