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vtkWrapPythonEnum.c
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vtkWrapPythonEnum.c
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/*=========================================================================
Program: Visualization Toolkit
Module: vtkWrapPythonEnum.c
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include "vtkWrapPythonEnum.h"
#include "vtkWrap.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
/* -------------------------------------------------------------------- */
/* check whether an enum type will be wrapped */
int vtkWrapPython_IsEnumWrapped(
HierarchyInfo *hinfo, const char *enumname)
{
int rval = 0;
HierarchyEntry *entry;
if (hinfo && enumname)
{
entry = vtkParseHierarchy_FindEntry(hinfo, enumname);
if (entry && entry->IsEnum)
{
rval = 1;
}
}
return rval;
}
/* -------------------------------------------------------------------- */
/* find and mark all enum parameters by setting IsEnum=1 */
void vtkWrapPython_MarkAllEnums(
NamespaceInfo *contents, HierarchyInfo *hinfo)
{
FunctionInfo *currentFunction;
int i, j, n, m, ii, nn;
ClassInfo *data;
ValueInfo *val;
nn = contents->NumberOfClasses;
for (ii = 0; ii < nn; ii++)
{
data = contents->Classes[ii];
n = data->NumberOfFunctions;
for (i = 0; i < n; i++)
{
currentFunction = data->Functions[i];
if (currentFunction->Access == VTK_ACCESS_PUBLIC)
{
/* we start with the return value */
val = currentFunction->ReturnValue;
m = vtkWrap_CountWrappedParameters(currentFunction);
/* the -1 is for the return value */
for (j = (val ? -1 : 0); j < m; j++)
{
if (j >= 0)
{
val = currentFunction->Parameters[j];
}
if (vtkWrap_IsEnumMember(data, val) ||
vtkWrapPython_IsEnumWrapped(hinfo, val->Class))
{
val->IsEnum = 1;
}
}
}
}
}
}
/* -------------------------------------------------------------------- */
/* generate a wrapped enum type */
void vtkWrapPython_AddEnumType(
FILE *fp, const char *indent, const char *dictvar, const char *objvar,
const char *scope, EnumInfo *cls)
{
/* Don't add anonymous enums */
fprintf(fp,
"%sPyType_Ready(&Py%s%s%s_Type);\n"
"%sPy%s%s%s_Type.tp_new = NULL;\n"
"%svtkPythonUtil::AddEnumToMap(&Py%s%s%s_Type);\n"
"\n",
indent, (scope ? scope : ""), (scope ? "_" : ""), cls->Name,
indent, (scope ? scope : ""), (scope ? "_" : ""), cls->Name,
indent, (scope ? scope : ""), (scope ? "_" : ""), cls->Name);
fprintf(fp,
"%s%s = (PyObject *)&Py%s%s%s_Type;\n"
"%sif (PyDict_SetItemString(%s, \"%s\", %s) != 0)\n"
"%s{\n"
"%s Py_DECREF(%s);\n"
"%s}\n",
indent, objvar,
(scope ? scope : ""), (scope ? "_" : ""), cls->Name,
indent, dictvar, cls->Name, objvar,
indent,
indent, objvar,
indent);
}
/* -------------------------------------------------------------------- */
/* write out an enum type object */
void vtkWrapPython_GenerateEnumType(
FILE *fp, const char *module, const char *classname, EnumInfo *data)
{
char enumname[512];
char tpname[512];
if (classname)
{
/* join with "_" for identifier, and with "." for type name */
sprintf(enumname, "%.200s_%.200s", classname, data->Name);
sprintf(tpname, "%.200s.%.200s", classname, data->Name);
}
else
{
sprintf(enumname, "%.200s", data->Name);
sprintf(tpname, "%.200s", data->Name);
}
/* generate all functions and protocols needed for the type */
/* generate the TypeObject */
fprintf(fp,
"static PyTypeObject Py%s_Type = {\n"
" PyVarObject_HEAD_INIT(&PyType_Type, 0)\n"
" \"%sPython.%s\", // tp_name\n"
" sizeof(PyIntObject), // tp_basicsize\n"
" 0, // tp_itemsize\n"
" 0, // tp_dealloc\n"
" 0, // tp_print\n"
" 0, // tp_getattr\n"
" 0, // tp_setattr\n"
" 0, // tp_compare\n"
" 0, // tp_repr\n",
enumname, module, tpname);
fprintf(fp,
" 0, // tp_as_number\n"
" 0, // tp_as_sequence\n"
" 0, // tp_as_mapping\n"
" 0, // tp_hash\n"
" 0, // tp_call\n"
" 0, // tp_str\n"
" 0, // tp_getattro\n"
" 0, // tp_setattro\n"
" 0, // tp_as_buffer\n"
" Py_TPFLAGS_DEFAULT, // tp_flags\n"
" 0, // tp_doc\n"
" 0, // tp_traverse\n"
" 0, // tp_clear\n"
" 0, // tp_richcompare\n"
" 0, // tp_weaklistoffset\n");
fprintf(fp,
" 0, // tp_iter\n"
" 0, // tp_iternext\n"
" 0, // tp_methods\n"
" 0, // tp_members\n"
" 0, // tp_getset\n"
" &PyInt_Type, // tp_base\n"
" 0, // tp_dict\n"
" 0, // tp_descr_get\n"
" 0, // tp_descr_set\n"
" 0, // tp_dictoffset\n"
" 0, // tp_init\n"
" 0, // tp_alloc\n"
" 0, // tp_new\n"
" PyObject_Del, // tp_free\n"
" 0, // tp_is_gc\n");
/* fields set by python itself */
fprintf(fp,
" 0, // tp_bases\n"
" 0, // tp_mro\n"
" 0, // tp_cache\n"
" 0, // tp_subclasses\n"
" 0, // tp_weaklist\n");
/* internal struct members */
fprintf(fp,
" VTK_WRAP_PYTHON_SUPPRESS_UNINITIALIZED\n"
"};\n"
"\n");
/* conversion method: construct from enum value */
/* XXX the PY3K implementation is horridly inefficient */
fprintf(fp,
"PyObject *Py%s_FromEnum(int val)\n"
"{\n"
"#ifdef VTK_PY3K\n"
" PyObject *args = Py_BuildValue(\"(i)\", val);\n"
" PyObject *obj = PyLong_Type.tp_new(&Py%s_Type, args, NULL);\n"
" Py_DECREF(args);\n"
" return obj;\n"
"#else\n"
" PyIntObject *self = PyObject_New(PyIntObject,\n"
" &Py%s_Type);\n"
" self->ob_ival = val;\n"
" return (PyObject *)self;\n"
"#endif\n"
"}\n"
"\n",
enumname, enumname, enumname);
}
/* generate code that adds all public enum types to a python dict */
void vtkWrapPython_AddPublicEnumTypes(
FILE *fp, const char *indent, const char *dictvar, const char *objvar,
NamespaceInfo *data)
{
int i;
for (i = 0; i < data->NumberOfEnums; i++)
{
if (data->Enums[i]->Access == VTK_ACCESS_PUBLIC)
{
vtkWrapPython_AddEnumType(
fp, indent, dictvar, objvar, data->Name, data->Enums[i]);
fprintf(fp, "\n");
}
}
}