lib/python/connections.h

   1 #ifndef __lib_python_connections_h
   2 #define __lib_python_connections_h
   3
   4 #include <libsig_comp.h>
   5
   6                 /* avoid warnigs :) */
   7 #include <features.h>
   8 #undef _POSIX_C_SOURCE
   9 #define _POSIX_C_SOURCE 200112L
  10 #include <Python.h>
  11 #include <lib/python/python.h>
  12
  13 class PSignal
  14 {
  15 public:
  16         PyObject *m_list;
  17 public:
  18         PSignal()
  19         {
  20                 m_list = PyList_New(0);
  21                 Py_INCREF(m_list);
  22         }
  23         ~PSignal()
  24         {
  25                 Py_DECREF(m_list);
  26         }
  27
  28         void callPython(PyObject *tuple)
  29         {
  30                 int size = PyList_Size(m_list);
  31                 int i;
  32                 for (i=0; i<size; ++i)
  33                 {
  34                         PyObject *b = PyList_GET_ITEM(m_list, i);
  35                         ePython::call(b, tuple);
  36                 }
  37         }
  38
  39
  40         PyObject *get() { Py_INCREF(m_list); return m_list; }
  41 };
  42
  43 inline PyObject *PyFrom(int v)
  44 {
  45         return PyInt_FromLong(v);
  46 }
  47
  48 template <class R>
  49 class PSignal0: public PSignal, public Signal0<R>
  50 {
  51 public:
  52         R operator()()
  53         {
  54                 PyObject *pArgs = PyTuple_New(0);
  55                 callPython(pArgs);
  56                 Py_DECREF(pArgs);
  57                 return Signal0<R>::operator()();
  58         }
  59 };
  60
  61 template <class R, class V0>
  62 class PSignal1: public PSignal, public Signal1<R,V0>
  63 {
  64 public:
  65         R operator()(V0 a0)
  66         {
  67                 PyObject *pArgs = PyTuple_New(1);
  68                 PyTuple_SET_ITEM(pArgs, 0, PyFrom(a0));
  69                 callPython(pArgs);
  70                 Py_DECREF(pArgs);
  71                 return Signal1<R,V0>::operator()(a0);
  72         }
  73 };
  74
  75 template <class R, class V0, class V1>
  76 class PSignal2: public PSignal, public Signal2<R,V0,V1>
  77 {
  78 public:
  79         R operator()(V0 a0, V1 a1)
  80         {
  81                 PyObject *pArgs = PyTuple_New(2);
  82                 PyTuple_SET_ITEM(pArgs, 0, PyFrom(a0));
  83                 PyTuple_SET_ITEM(pArgs, 1, PyFrom(a1));
  84                 callPython(pArgs);
  85                 Py_DECREF(pArgs);
  86                 return Signal2<R,V0,V1>::operator()(a0, a1);
  87         }
  88 };
  89
  90 #endif