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Provide SWIGTYPE MOVE typemaps in swigmove.i

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For implementing full move semantics when passing parameters by value.
Based on SWIGTYPE && and std::unique_ptr typemaps which implement move
semantics.

Added for all languages, but untested for: Go, Ocaml, R, Scilab (and
unlikely to be fully functional for same reasons as for std::unique_ptr
support).

Issue #999
This commit is contained in:
William S Fulton 2022-09-16 08:36:25 +01:00
commit dad7c93ca0
41 changed files with 909 additions and 19 deletions
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23
Examples/test-suite/cpp11_move_only.i
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@ -12,19 +12,23 @@ using namespace std;
bool trace = false;
struct MoveOnly {
MoveOnly(int i = 0) { if (trace) cout << "MoveOnly(" << i << ")" << " " << this << endl; Counter::normal_constructor++; }
int val;
MoveOnly(int i = 0) : val(i) { if (trace) cout << "MoveOnly(" << i << ")" << " " << this << endl; Counter::normal_constructor++; }
MoveOnly(const MoveOnly &other) = delete;
MoveOnly & operator=(const MoveOnly &other) = delete;
MoveOnly(MoveOnly &&other) noexcept { if (trace) cout << "MoveOnly(MoveOnly &&)" << " " << this << endl; Counter::move_constructor++; }
MoveOnly & operator=(MoveOnly &&other) noexcept { if (trace) cout << "operator=(MoveOnly &&)" << " " << this << endl; Counter::move_assignment++; return *this; }
MoveOnly(MoveOnly &&other) noexcept : val(std::move(other.val)) { if (trace) cout << "MoveOnly(MoveOnly &&)" << " " << this << endl; Counter::move_constructor++; }
MoveOnly & operator=(MoveOnly &&other) noexcept { if (trace) cout << "operator=(MoveOnly &&)" << " " << this << endl; Counter::move_assignment++; if (this != &other) { val = std::move(other.val); } return *this; }
~MoveOnly() { if (trace) cout << "~MoveOnly()" << " " << this << endl; Counter::destructor++; }
static MoveOnly create() { return MoveOnly(111); }
// static const MoveOnly createConst() { return MoveOnly(111); } // not supported by default
// static void take(MoveOnly mo) { if (trace) cout << "take(MoveOnly)" << " " << &mo << endl; }
// compile error by default, see cpp11_move_typemaps.i
#if defined(WRAP_TAKE_METHOD)
static void take(MoveOnly mo) { if (trace) cout << "take(MoveOnly)" << " " << &mo << endl; }
#endif
};
%}
@ -35,13 +39,14 @@ struct MoveOnly {
%inline %{
// Movable and Copyable
struct MovableCopyable {
MovableCopyable(int i = 0) { if (trace) cout << "MovableCopyable(" << i << ")" << " " << this << endl; Counter::normal_constructor++; }
int val;
MovableCopyable(int i = 0) : val(i) { if (trace) cout << "MovableCopyable(" << i << ")" << " " << this << endl; Counter::normal_constructor++; }
MovableCopyable(const MovableCopyable &other) { if (trace) cout << "MovableCopyable(const MovableCopyable &)" << " " << this << " " << &other << endl; Counter::copy_constructor++;}
MovableCopyable & operator=(const MovableCopyable &other) { if (trace) cout << "operator=(const MovableCopyable &)" << " " << this << " " << &other << endl; Counter::copy_assignment++; return *this; }
MovableCopyable(const MovableCopyable &other) : val(other.val) { if (trace) cout << "MovableCopyable(const MovableCopyable &)" << " " << this << " " << &other << endl; Counter::copy_constructor++;}
MovableCopyable & operator=(const MovableCopyable &other) { if (trace) cout << "operator=(const MovableCopyable &)" << " " << this << " " << &other << endl; Counter::copy_assignment++; if (this != &other) { val = other.val; } return *this; }
MovableCopyable(MovableCopyable &&other) noexcept { if (trace) cout << "MovableCopyable(MovableCopyable &&)" << " " << this << endl; Counter::move_constructor++; }
MovableCopyable & operator=(MovableCopyable &&other) noexcept { if (trace) cout << "operator=(MovableCopyable &&)" << " " << this << endl; Counter::move_assignment++; return *this; }
MovableCopyable(MovableCopyable &&other) noexcept : val(std::move(other.val)) { if (trace) cout << "MovableCopyable(MovableCopyable &&)" << " " << this << endl; Counter::move_constructor++; }
MovableCopyable & operator=(MovableCopyable &&other) noexcept { if (trace) cout << "operator=(MovableCopyable &&)" << " " << this << endl; Counter::move_assignment++; if (this != &other) { val = std::move(other.val); } return *this; }
~MovableCopyable() { if (trace) cout << "~MovableCopyable()" << " " << this << endl; Counter::destructor++; }
static MovableCopyable create() { return MovableCopyable(111); }