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Reference Guide
TFunctionHolder.cxx
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1 // Author: Wim Lavrijsen, Apr 2005
2 
3 // Bindings
4 #include "PyROOT.h"
5 #include "TFunctionHolder.h"
6 #include "ObjectProxy.h"
7 
8 
9 //- public members --------------------------------------------------------------
11  ObjectProxy*& self, PyObject* args, PyObject* )
12 {
13 // no self means called as a free function; all ok
14  if ( ! self ) {
15  Py_INCREF( args );
16  return args;
17  }
18 
19 // otherwise, add self as part of the function arguments (means bound member)
20  Py_ssize_t sz = PyTuple_GET_SIZE( args );
21  PyObject* newArgs = PyTuple_New( sz + 1 );
22  for ( int i = 0; i < sz; ++i ) {
23  PyObject* item = PyTuple_GET_ITEM( args, i );
24  Py_INCREF( item );
25  PyTuple_SET_ITEM( newArgs, i + 1, item );
26  }
27 
28  Py_INCREF( self );
29  PyTuple_SET_ITEM( newArgs, 0, (PyObject*)self );
30 
31  return newArgs;
32 }
33 
34 ////////////////////////////////////////////////////////////////////////////////
35 /// preliminary check in case keywords are accidently used (they are ignored otherwise)
36 
38  ObjectProxy*& self, PyObject* args, PyObject* kwds, TCallContext* ctxt )
39 {
40  if ( kwds != 0 && PyDict_Size( kwds ) ) {
41  PyErr_SetString( PyExc_TypeError, "keyword arguments are not yet supported" );
42  return 0;
43  }
44 
45 // setup as necessary
46  if ( ! this->Initialize( ctxt ) )
47  return 0; // important: 0, not Py_None
48 
49 // reorder self into args, if necessary
50  if ( ! ( args = this->PreProcessArgs( self, args, kwds ) ) )
51  return 0;
52 
53 // translate the arguments
54  Bool_t bConvertOk = this->ConvertAndSetArgs( args, ctxt );
55  Py_DECREF( args );
56 
57  if ( bConvertOk == kFALSE )
58  return 0; // important: 0, not Py_None
59 
60 // execute function
61  return this->Execute( 0, 0, ctxt );
62 }
virtual PyObject * PreProcessArgs(ObjectProxy *&self, PyObject *args, PyObject *kwds)
verify existence of self, return if ok
bool Bool_t
Definition: RtypesCore.h:59
virtual Bool_t Initialize(TCallContext *ctxt=0)
done if cache is already setup
virtual PyObject * Call(ObjectProxy *&, PyObject *args, PyObject *kwds, TCallContext *ctx=0)
preliminary check in case keywords are accidently used (they are ignored otherwise) ...
virtual PyObject * Execute(void *self, ptrdiff_t offset, TCallContext *ctxt=0)
call the interface method
const Bool_t kFALSE
Definition: RtypesCore.h:88
int Py_ssize_t
Definition: PyROOT.h:156
virtual Bool_t ConvertAndSetArgs(PyObject *args, TCallContext *ctxt=0)
_object PyObject
Definition: TPyArg.h:20