Intermediate changes

commit_hash:d5b1af16dbe9030537a04c27eb410c88c2f496cd

1 files changed, 69 insertions, 0 deletions

diff --git a/contrib/tools/swig/Lib/python/std_unique_ptr.i b/contrib/tools/swig/Lib/python/std_unique_ptr.i
new file mode 100644
index 00000000000..e3669bb4a5a
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+++ b/contrib/tools/swig/Lib/python/std_unique_ptr.i
@@ -0,0 +1,69 @@
+/* -----------------------------------------------------------------------------
+ * std_unique_ptr.i
+ *
+ * SWIG library file for handling std::unique_ptr.
+ *
+ * Returning a std::unique_ptr from a wrapped function:
+ *   Memory ownership is passed (moved) from the std::unique_ptr in the C++ layer
+ *   to the proxy class when returning a std::unique_ptr by value from a function.
+ *   Memory ownership is not moved when returning by any sort of reference.
+ *
+ * Passing a std::unique_ptr as a parameter to a wrapped function:
+ *   Memory ownership is passed from the proxy class to the std::unique_ptr in the
+ *   C++ layer when passed as a parameter by value, rvalue reference or non-const
+ *   lvalue reference. Memory ownership is not transferred when passing by const
+ *   lvalue reference.
+ * ----------------------------------------------------------------------------- */
+
+%include <unique_ptr.swg>
+
+%define %unique_ptr(TYPE)
+%typemap(in, noblock=1) std::unique_ptr< TYPE > (void *argp = 0, int res = 0) {
+  res = SWIG_ConvertPtr($input, &argp, $descriptor(TYPE *), SWIG_POINTER_RELEASE | %convertptr_flags);
+  if (!SWIG_IsOK(res)) {
+    if (res == SWIG_ERROR_RELEASE_NOT_OWNED) {
+      %releasenotowned_fail(res, "TYPE *", $symname, $argnum);
+    } else {
+      %argument_fail(res, "TYPE *", $symname, $argnum);
+    }
+  }
+  $1.reset((TYPE *)argp);
+}
+
+%typemap(in, noblock=1) std::unique_ptr< TYPE > & (void *argp = 0, int res = 0, std::unique_ptr< TYPE > uptr), std::unique_ptr< TYPE > && (void *argp = 0, int res = 0, std::unique_ptr< TYPE > uptr) {
+  res = SWIG_ConvertPtr($input, &argp, $descriptor(TYPE *), SWIG_POINTER_RELEASE | %convertptr_flags);
+  if (!SWIG_IsOK(res)) {
+    if (res == SWIG_ERROR_RELEASE_NOT_OWNED) {
+      %releasenotowned_fail(res, "TYPE *", $symname, $argnum);
+    } else {
+      %argument_fail(res, "TYPE *", $symname, $argnum);
+    }
+  }
+  uptr.reset((TYPE *)argp);
+  $1 = &uptr;
+}
+
+%typemap(in, noblock=1, fragment="SwigNoDeleteUniquePtr") const std::unique_ptr< TYPE > & (void *argp = 0, int res = 0, swig::NoDeleteUniquePtr< TYPE > ndup) {
+  res = SWIG_ConvertPtr($input, &argp, $descriptor(TYPE *), 0);
+  if (!SWIG_IsOK(res)) {
+    %argument_fail(res, "TYPE *", $symname, $argnum);
+  }
+  ndup.uptr.reset((TYPE *)argp);
+  $1 = &ndup.uptr;
+}
+
+%typemap (out) std::unique_ptr< TYPE > %{
+  %set_output(SWIG_NewPointerObj($1.release(), $descriptor(TYPE *), SWIG_POINTER_OWN | %newpointer_flags));
+%}
+%typemap (out) std::unique_ptr< TYPE > &, std::unique_ptr< TYPE > && %{
+  %set_output(SWIG_NewPointerObj($1->get(), $descriptor(TYPE *), $owner | %newpointer_flags));
+%}
+
+%typemap(typecheck, precedence=SWIG_TYPECHECK_POINTER, equivalent="TYPE *", noblock=1) std::unique_ptr< TYPE >, std::unique_ptr< TYPE > &, std::unique_ptr< TYPE > && {
+  void *vptr = 0;
+  int res = SWIG_ConvertPtr($input, &vptr, $descriptor(TYPE *), 0);
+  $1 = SWIG_CheckState(res);
+}
+
+%template() std::unique_ptr< TYPE >;
+%enddef