e777b054d5
The C++ wrappers create a temporary variable for a parameter to be passed to a function. This is initially default constructed and then copy assigned from the instance being passed in from the target language. This is unchanged, however, when the temporary variable is passed to wrapped function, it is now done using std::move. If the type is move constructible, the move constructor will be used instead of the copy constructor. Note that the implementation calls std::move for all user-defined types (non-primitive types passed by value), this excludes anything passed by pointer, reference and arrays. It does also include any type that has not been defined/parsed by SWIG, that is, unknown types. std::move is called via the SWIG_STD_MOVE macro which only calls std::move for C++11 and later code.
27 lines
570 B
Python
27 lines
570 B
Python
from cpp11_move_only import *
|
|
|
|
# Output
|
|
Counter.reset_counts()
|
|
mo = MoveOnly.create()
|
|
del mo
|
|
Counter.check_counts(1, 0, 0, 2, 0, 3)
|
|
|
|
Counter.reset_counts()
|
|
mo = MovableCopyable.create()
|
|
del mo
|
|
Counter.check_counts(2, 1, 0, 0, 1, 3)
|
|
|
|
# Move semantics not used
|
|
Counter.reset_counts()
|
|
mo = MovableCopyable.createConst()
|
|
del mo
|
|
Counter.check_counts(2, 1, 1, 0, 0, 3)
|
|
|
|
# Input
|
|
Counter.reset_counts()
|
|
mo = MovableCopyable(222)
|
|
Counter.check_counts(1, 0, 0, 0, 0, 0)
|
|
MovableCopyable.take(mo)
|
|
Counter.check_counts(2, 0, 1, 1, 0, 2)
|
|
del mo
|
|
Counter.check_counts(2, 0, 1, 1, 0, 3)
|