text: /*
   * This program is free software; you can redistribute it and/or
   * modify it under the terms of the GNU General Public License
   * as published by the Free Software Foundation; either version 2
   * of the License, or (at your option) any later version.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, write to the Free Software Foundation,
   * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
   */
  
  /** \file
   * \ingroup freestyle
   */
  
  #include "BPy_Iterator.h"
  
  #include "BPy_Convert.h"
  #include "Iterator/BPy_AdjacencyIterator.h"
  #include "Iterator/BPy_Interface0DIterator.h"
  #include "Iterator/BPy_CurvePointIterator.h"
  #include "Iterator/BPy_StrokeVertexIterator.h"
  #include "Iterator/BPy_SVertexIterator.h"
  #include "Iterator/BPy_orientedViewEdgeIterator.h"
  #include "Iterator/BPy_ViewEdgeIterator.h"
  #include "Iterator/BPy_ChainingIterator.h"
  #include "Iterator/BPy_ChainPredicateIterator.h"
  #include "Iterator/BPy_ChainSilhouetteIterator.h"
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  ///////////////////////////////////////////////////////////////////////////////////////////
  
  //-------------------MODULE INITIALIZATION--------------------------------
  int Iterator_Init(PyObject *module)
  {
    if (module == NULL) {
      return -1;
    }
  
    if (PyType_Ready(&Iterator_Type) < 0) {
      return -1;
    }
    Py_INCREF(&Iterator_Type);
    PyModule_AddObject(module, "Iterator", (PyObject *)&Iterator_Type);
  
    if (PyType_Ready(&AdjacencyIterator_Type) < 0) {
      return -1;
    }
    Py_INCREF(&AdjacencyIterator_Type);
    PyModule_AddObject(module, "AdjacencyIterator", (PyObject *)&AdjacencyIterator_Type);
  
    if (PyType_Ready(&Interface0DIterator_Type) < 0) {
      return -1;
    }
    Py_INCREF(&Interface0DIterator_Type);
    PyModule_AddObject(module, "Interface0DIterator", (PyObject *)&Interface0DIterator_Type);
  
    if (PyType_Ready(&CurvePointIterator_Type) < 0) {
      return -1;
    }
    Py_INCREF(&CurvePointIterator_Type);
    PyModule_AddObject(module, "CurvePointIterator", (PyObject *)&CurvePointIterator_Type);
  
    if (PyType_Ready(&StrokeVertexIterator_Type) < 0) {
      return -1;
    }
    Py_INCREF(&StrokeVertexIterator_Type);
    PyModule_AddObject(module, "StrokeVertexIterator", (PyObject *)&StrokeVertexIterator_Type);
  
    if (PyType_Ready(&SVertexIterator_Type) < 0) {
      return -1;
    }
    Py_INCREF(&SVertexIterator_Type);
    PyModule_AddObject(module, "SVertexIterator", (PyObject *)&SVertexIterator_Type);
  
    if (PyType_Ready(&orientedViewEdgeIterator_Type) < 0) {
      return -1;
    }
    Py_INCREF(&orientedViewEdgeIterator_Type);
    PyModule_AddObject(
        module, "orientedViewEdgeIterator", (PyObject *)&orientedViewEdgeIterator_Type);
  
    if (PyType_Ready(&ViewEdgeIterator_Type) < 0) {
      return -1;
    }
    Py_INCREF(&ViewEdgeIterator_Type);
    PyModule_AddObject(module, "ViewEdgeIterator", (PyObject *)&ViewEdgeIterator_Type);
  
    if (PyType_Ready(&ChainingIterator_Type) < 0) {
      return -1;
    }
    Py_INCREF(&ChainingIterator_Type);
    PyModule_AddObject(module, "ChainingIterator", (PyObject *)&ChainingIterator_Type);
  
    if (PyType_Ready(&ChainPredicateIterator_Type) < 0) {
      return -1;
    }
    Py_INCREF(&ChainPredicateIterator_Type);
    PyModule_AddObject(module, "ChainPredicateIterator", (PyObject *)&ChainPredicateIterator_Type);
  
    if (PyType_Ready(&ChainSilhouetteIterator_Type) < 0) {
      return -1;
    }
    Py_INCREF(&ChainSilhouetteIterator_Type);
    PyModule_AddObject(module, "ChainSilhouetteIterator", (PyObject *)&ChainSilhouetteIterator_Type);
  
    return 0;
  }
  
  //------------------------INSTANCE METHODS ----------------------------------
  
  PyDoc_STRVAR(Iterator_doc,
               "Base class to define iterators.\n"
               "\n"
               ".. method:: __init__()\n"
               "\n"
               "   Default constructor.");
  
  static int Iterator_init(BPy_Iterator *self, PyObject *args, PyObject *kwds)
  {
    static const char *kwlist[] = {NULL};
  
    if (!PyArg_ParseTupleAndKeywords(args, kwds, "", (char **)kwlist)) {
      return -1;
    }
    self->it = new Iterator();
    return 0;
  }
  
  static void Iterator_dealloc(BPy_Iterator *self)
  {
    if (self->it) {
      delete self->it;
    }
    Py_TYPE(self)->tp_free((PyObject *)self);
  }
  
  static PyObject *Iterator_repr(BPy_Iterator *self)
  {
    return PyUnicode_FromFormat("type: %s - address: %p", Py_TYPE(self)->tp_name, self->it);
  }
  
  PyDoc_STRVAR(Iterator_increment_doc,
               ".. method:: increment()\n"
               "\n"
               "   Makes the iterator point the next element.");
  
  static PyObject *Iterator_increment(BPy_Iterator *self)
  {
    if (self->it->isEnd()) {
      PyErr_SetString(PyExc_RuntimeError, "cannot increment any more");
      return NULL;
    }
    self->it->increment();
    Py_RETURN_NONE;
  }
  
  PyDoc_STRVAR(Iterator_decrement_doc,
               ".. method:: decrement()\n"
               "\n"
               "   Makes the iterator point the previous element.");
  
  static PyObject *Iterator_decrement(BPy_Iterator *self)
  {
    if (self->it->isBegin()) {
      PyErr_SetString(PyExc_RuntimeError, "cannot decrement any more");
      return NULL;
    }
    self->it->decrement();
    Py_RETURN_NONE;
  }
  
  static PyMethodDef BPy_Iterator_methods[] = {
      {"increment", (PyCFunction)Iterator_increment, METH_NOARGS, Iterator_increment_doc},
      {"decrement", (PyCFunction)Iterator_decrement, METH_NOARGS, Iterator_decrement_doc},
      {NULL, NULL, 0, NULL},
  };
  
  /*----------------------Iterator get/setters ----------------------------*/
  
  PyDoc_STRVAR(Iterator_name_doc,
               "The string of the name of this iterator.\n"
               "\n"
               ":type: str");
  
  static PyObject *Iterator_name_get(BPy_Iterator *self, void *UNUSED(closure))
  {
    return PyUnicode_FromString(Py_TYPE(self)->tp_name);
  }
  
  PyDoc_STRVAR(Iterator_is_begin_doc,
               "True if the iterator points to the first element.\n"
               "\n"
               ":type: bool");
  
  static PyObject *Iterator_is_begin_get(BPy_Iterator *self, void *UNUSED(closure))
  {
    return PyBool_from_bool(self->it->isBegin());
  }
  
  PyDoc_STRVAR(Iterator_is_end_doc,
               "True if the iterator points to the last element.\n"
               "\n"
               ":type: bool");
  
  static PyObject *Iterator_is_end_get(BPy_Iterator *self, void *UNUSED(closure))
  {
    return PyBool_from_bool(self->it->isEnd());
  }
  
  static PyGetSetDef BPy_Iterator_getseters[] = {
      {(char *)"name", (getter)Iterator_name_get, (setter)NULL, (char *)Iterator_name_doc, NULL},
      {(char *)"is_begin",
       (getter)Iterator_is_begin_get,
       (setter)NULL,
       (char *)Iterator_is_begin_doc,
       NULL},
      {(char *)"is_end",
       (getter)Iterator_is_end_get,
       (setter)NULL,
       (char *)Iterator_is_end_doc,
       NULL},
      {NULL, NULL, NULL, NULL, NULL} /* Sentinel */
  };
  
  /*-----------------------BPy_Iterator type definition ------------------------------*/
  
  PyTypeObject Iterator_Type = {
      PyVarObject_HEAD_INIT(NULL, 0) "Iterator", /* tp_name */
      sizeof(BPy_Iterator),                      /* tp_basicsize */
      0,                                         /* tp_itemsize */
      (destructor)Iterator_dealloc,              /* tp_dealloc */
      0,                                         /* tp_print */
      0,                                         /* tp_getattr */
      0,                                         /* tp_setattr */
      0,                                         /* tp_reserved */
      (reprfunc)Iterator_repr,                   /* tp_repr */
      0,                                         /* tp_as_number */
      0,                                         /* tp_as_sequence */
      0,                                         /* tp_as_mapping */
      0,                                         /* tp_hash  */
      0,                                         /* tp_call */
      0,                                         /* tp_str */
      0,                                         /* tp_getattro */
      0,                                         /* tp_setattro */
      0,                                         /* tp_as_buffer */
      Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,  /* tp_flags */
      Iterator_doc,                              /* tp_doc */
      0,                                         /* tp_traverse */
      0,                                         /* tp_clear */
      0,                                         /* tp_richcompare */
      0,                                         /* tp_weaklistoffset */
      0,                                         /* tp_iter */
      0,                                         /* tp_iternext */
      BPy_Iterator_methods,                      /* tp_methods */
      0,                                         /* tp_members */
      BPy_Iterator_getseters,                    /* tp_getset */
      0,                                         /* tp_base */
      0,                                         /* tp_dict */
      0,                                         /* tp_descr_get */
      0,                                         /* tp_descr_set */
      0,                                         /* tp_dictoffset */
      (initproc)Iterator_init,                   /* tp_init */
      0,                                         /* tp_alloc */
      PyType_GenericNew,                         /* tp_new */
  };
  
  ///////////////////////////////////////////////////////////////////////////////////////////
  
  #ifdef __cplusplus
  }
  #endif
  