src/bindings/python/bt2/bt2/native_bt_component.i

   1 /*
   2  * SPDX-License-Identifier: MIT
   3  *
   4  * Copyright (c) 2017 Philippe Proulx <pproulx@efficios.com>
   5  */
   6
   7 /* Output argument typemap for self port output (always appends) */
   8 %typemap(in, numinputs=0)
   9         (bt_self_component_port_input **)
  10         (bt_self_component_port_input *temp_self_port = NULL) {
  11         $1 = &temp_self_port;
  12 }
  13
  14 %typemap(argout) bt_self_component_port_input ** {
  15         if (*$1) {
  16                 /* SWIG_Python_AppendOutput() steals the created object */
  17                 $result = SWIG_Python_AppendOutput($result,
  18                                 SWIG_NewPointerObj(SWIG_as_voidptr(*$1),
  19                                         SWIGTYPE_p_bt_self_component_port_input, 0));
  20         } else {
  21                 /* SWIG_Python_AppendOutput() steals Py_None */
  22                 Py_INCREF(Py_None);
  23                 $result = SWIG_Python_AppendOutput($result, Py_None);
  24         }
  25 }
  26
  27 /* Output argument typemap for self port output (always appends) */
  28 %typemap(in, numinputs=0)
  29         (bt_self_component_port_output **)
  30         (bt_self_component_port_output *temp_self_port = NULL) {
  31         $1 = &temp_self_port;
  32 }
  33
  34 %typemap(argout) (bt_self_component_port_output **) {
  35         if (*$1) {
  36                 /* SWIG_Python_AppendOutput() steals the created object */
  37                 $result = SWIG_Python_AppendOutput($result,
  38                                 SWIG_NewPointerObj(SWIG_as_voidptr(*$1),
  39                                         SWIGTYPE_p_bt_self_component_port_output, 0));
  40         } else {
  41                 /* SWIG_Python_AppendOutput() steals Py_None */
  42                 Py_INCREF(Py_None);
  43                 $result = SWIG_Python_AppendOutput($result, Py_None);
  44         }
  45 }
  46
  47 /* Typemaps used for user data attached to self component ports. */
  48
  49 /*
  50  * The user data Python object is kept as the user data of the port, we pass
  51  * the PyObject pointer directly to the port creation function.
  52  */
  53 %typemap(in) void *user_data {
  54         $1 = $input;
  55 }
  56
  57 /*
  58  * The port, if created successfully, now owns a reference to the Python object,
  59  * we reflect that here.
  60  */
  61 %typemap(argout) void *user_data {
  62         if (PyLong_AsLong($result) == __BT_FUNC_STATUS_OK) {
  63                 Py_INCREF($1);
  64         }
  65 }
  66
  67 %include <babeltrace2/graph/component.h>
  68 %include <babeltrace2/graph/self-component.h>
  69
  70 /*
  71  * This type map relies on the rather common "user_data" name, so don't pollute
  72  * the typemap namespace.
  73  */
  74 %clear void *user_data;