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cemu-idapython/swig/graph.i
elias.bachaalany 8e78513e91 - minor code cleanup 
- updated CHANGES.txt
- nalt.i: forgot to release reference for callback result (in py_import_enum_cb())
2010-03-05 11:35:28 +00:00

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%{
//<code(py_graph)>
class py_graph_t
{
private:
enum
{
GR_HAVE_USER_HINT = 0x00000001,
GR_HAVE_CLICKED = 0x00000002,
GR_HAVE_DBL_CLICKED = 0x00000004,
GR_HAVE_GOTFOCUS = 0x00000008,
GR_HAVE_LOSTFOCUS = 0x00000010,
GR_HAVE_CHANGED_CURRENT = 0x00000020,
GR_HAVE_CLOSE = 0x00000040,
GR_HAVE_COMMAND = 0x00000080
};
struct nodetext_cache_t
{
qstring text;
bgcolor_t bgcolor;
nodetext_cache_t(const nodetext_cache_t &rhs): text(rhs.text), bgcolor(rhs.bgcolor) { }
nodetext_cache_t(const char *t, bgcolor_t c): text(t), bgcolor(c) { }
nodetext_cache_t() { }
};
class nodetext_cache_map_t: public std::map<int, nodetext_cache_t>
{
public:
nodetext_cache_t *get(int node_id)
{
iterator it = find(node_id);
if (it == end())
return NULL;
return &it->second;
}
nodetext_cache_t *add(const int node_id, const char *text, bgcolor_t bgcolor = DEFCOLOR)
{
return &(insert(std::make_pair(node_id, nodetext_cache_t(text, bgcolor))).first->second);
}
};
class tform_pygraph_map_t: public std::map<TForm *, py_graph_t *>
{
public:
py_graph_t *get(TForm *form)
{
iterator it = find(form);
return it == end() ? NULL : it->second;
}
void add(TForm *form, py_graph_t *py)
{
(*this)[form] = py;
}
};
class cmdid_map_t: public std::map<Py_ssize_t, py_graph_t *>
{
private:
Py_ssize_t uid;
public:
cmdid_map_t()
{
uid = 1; // we start by one and keep zero for error id
}
void add(py_graph_t *pyg)
{
(*this)[uid] = pyg;
++uid;
}
const Py_ssize_t id() const { return uid; }
void clear(py_graph_t *pyg)
{
iterator e = end();
for (iterator it=begin();it!=end();)
{
if (it->second == pyg)
{
iterator temp = it++;
erase(temp);
}
else
++it;
}
}
py_graph_t *get(Py_ssize_t id)
{
iterator it = find(id);
return it == end() ? NULL : it->second;
}
};
static tform_pygraph_map_t tform_pyg;
static cmdid_map_t cmdid_pyg;
int cb_flags;
TForm *form;
graph_viewer_t *gv;
bool refresh_needed;
PyObject *self;
nodetext_cache_map_t node_cache;
// static callback
static int idaapi s_callback(void *obj, int code, va_list va)
{
return ((py_graph_t *)obj)->gr_callback(code, va);
}
static bool idaapi s_menucb(void *ud)
{
Py_ssize_t id = (Py_ssize_t)ud;
py_graph_t *_this = cmdid_pyg.get(id);
if (_this != NULL)
_this->on_command(id);
return true;
}
void on_command(Py_ssize_t id)
{
// Check return value to OnRefresh() call
PyObject *ret = PyObject_CallMethod(self, (char *)S_ON_COMMAND, "n", id);
Py_XDECREF(ret);
}
// Refresh user-defined graph node number and edges
// It calls Python method and expects that the user already filled
// the nodes and edges. The nodes and edges are retrieved and passed to IDA
void on_user_refresh(mutable_graph_t *g)
{
if (!refresh_needed)
return;
// Check return value to OnRefresh() call
PyObject *ret = PyObject_CallMethod(self, (char *)S_ON_REFRESH, NULL);
if (ret == NULL || !PyBool_Check(ret) || ret != Py_True)
{
Py_XDECREF(ret);
return;
}
// Refer to the nodes
PyObject *nodes = PyObject_TryGetAttrString(self, S_M_NODES);
if (ret == NULL || !PyList_Check(nodes))
{
Py_XDECREF(nodes);
return;
}
// Refer to the edges
PyObject *edges = PyObject_TryGetAttrString(self, S_M_EDGES);
if (ret == NULL || !PyList_Check(nodes))
{
Py_DECREF(nodes);
Py_XDECREF(edges);
return;
}
// Resize the nodes
int max_nodes = abs(int(PyList_Size(nodes)));
g->clear();
g->resize(max_nodes);
// Mark that we refreshed already
refresh_needed = false;
// Clear cached nodes
node_cache.clear();
// Get the edges
for (int i=(int)PyList_Size(edges)-1;i>=0;i--)
{
// Each list item is a sequence (id1, id2)
PyObject *item = PyList_GetItem(edges, i);
if (!PySequence_Check(item))
continue;
// Get and validate each of the two elements in the sequence
int edge_ids[2];
int j;
for (j=0;j<qnumber(edge_ids);j++)
{
PyObject *id = PySequence_GetItem(item, j);
if (id == NULL || !PyInt_Check(id))
{
Py_XDECREF(id);
break;
}
int v = int(PyInt_AS_LONG(id));
Py_DECREF(id);
if (v > max_nodes)
break;
edge_ids[j] = v;
}
// Incomplete?
if (j != qnumber(edge_ids))
break;
// Add the edge
g->add_edge(edge_ids[0], edge_ids[1], NULL);
}
Py_DECREF(nodes);
Py_DECREF(edges);
}
// Retrieves the text for user-defined graph node
// It expects either a string or a tuple (string, bgcolor)
bool on_user_text(mutable_graph_t * /*g*/, int node, const char **str, bgcolor_t *bg_color)
{
// If already cached then return the value
nodetext_cache_t *c = node_cache.get(node);
if (c != NULL)
{
*str = c->text.c_str();
if (bg_color != NULL)
*bg_color = c->bgcolor;
return true;
}
// Not cached, call Python
PyObject *result = PyObject_CallMethod(self, (char *)S_ON_GETTEXT, "i", node);
if (result == NULL)
return false;
bgcolor_t cl = bg_color == NULL ? DEFCOLOR : *bg_color;
const char *s;
// User returned a string?
if (PyString_Check(result))
{
s = PyString_AsString(result);
if (s == NULL)
s = "";
c = node_cache.add(node, s, cl);
}
// User returned a sequence of text and bgcolor
else if (PySequence_Check(result) && PySequence_Size(result) == 2)
{
PyObject *py_str = PySequence_GetItem(result, 0);
PyObject *py_color = PySequence_GetItem(result, 1);
if (py_str == NULL || !PyString_Check(py_str) || (s = PyString_AsString(py_str)) == NULL)
s = "";
if (py_color != NULL && PyNumber_Check(py_color))
cl = bgcolor_t(PyLong_AsUnsignedLong(py_color));
c = node_cache.add(node, s, cl);
Py_XDECREF(py_str);
Py_XDECREF(py_color);
}
Py_DECREF(result);
*str = c->text.c_str();
if (bg_color != NULL)
*bg_color = c->bgcolor;
return true;
}
// Retrieves the hint for the user-defined graph
// Calls Python and expects a string or None
int on_user_hint(mutable_graph_t *, int mousenode, int /*mouseedge_src*/, int /*mouseedge_dst*/, char **hint)
{
// 'hint' must be allocated by qalloc() or qstrdup()
// out: 0-use default hint, 1-use proposed hint
// We dispatch hints over nodes only
if (mousenode == -1)
return 0;
PyObject *result = PyObject_CallMethod(self, (char *)S_ON_HINT, "i", mousenode);
bool ok = result != NULL && PyString_Check(result);
if (!ok)
{
Py_XDECREF(result);
return 0;
}
*hint = qstrdup(PyString_AsString(result));
Py_DECREF(result);
return 1; // use our hint
}
// graph is being destroyed
void on_destroy(mutable_graph_t * /*g*/ = NULL)
{
if (self != NULL)
{
if (cb_flags & GR_HAVE_CLOSE)
{
PyObject *result = PyObject_CallMethod(self, (char *)S_ON_CLOSE, NULL);
Py_XDECREF(result);
}
unbind();
}
// Remove the TForm from list
if (form != NULL)
tform_pyg.erase(form);
// remove all associated commands from the list
cmdid_pyg.clear(this);
// Delete this instance
delete this;
}
// graph is being clicked
int on_clicked(graph_viewer_t * /*gv*/, selection_item_t * /*item1*/, graph_item_t *item2)
{
// in: graph_viewer_t *gv
// selection_item_t *current_item1
// graph_item_t *current_item2
// out: 0-ok, 1-ignore click
// this callback allows you to ignore some clicks.
// it occurs too early, internal graph variables are not updated yet
// current_item1, current_item2 point to the same thing
// item2 has more information.
// see also: kernwin.hpp, custom_viewer_click_t
if (item2->n == -1)
return 1;
PyObject *result = PyObject_CallMethod(self, (char *)S_ON_CLICK, "i", item2->n);
if (result == NULL || !PyBool_Check(result) || result != Py_True)
{
Py_XDECREF(result);
return 1;
}
Py_DECREF(result);
return 0;
}
// a graph node has been double clicked
int on_dblclicked(graph_viewer_t * /*gv*/, selection_item_t *item)
{
// in: graph_viewer_t *gv
// selection_item_t *current_item
// out: 0-ok, 1-ignore click
//graph_viewer_t *v = va_arg(va, graph_viewer_t *);
//selection_item_t *s = va_arg(va, selection_item_t *);
if (item == NULL || !item->is_node)
return 1;
PyObject *result = PyObject_CallMethod(self, (char *)S_ON_DBL_CLICK, "i", item->node);
if (result == NULL || !PyBool_Check(result) || result != Py_True)
{
Py_XDECREF(result);
return 1;
}
Py_DECREF(result);
return 0;
}
// a graph viewer got focus
void on_gotfocus(graph_viewer_t * /*gv*/)
{
PyObject *result = PyObject_CallMethod(self, (char *)S_ON_ACTIVATE, NULL);
Py_XDECREF(result);
}
// a graph viewer lost focus
void on_lostfocus(graph_viewer_t *gv)
{
PyObject *result = PyObject_CallMethod(self, (char *)S_ON_DEACTIVATE, NULL);
Py_XDECREF(result);
}
// a new graph node became the current node
int on_changed_current(graph_viewer_t * /*gv*/, int curnode)
{
// in: graph_viewer_t *gv
// int curnode
// out: 0-ok, 1-forbid to change the current node
//graph_viewer_t *v = va_arg(va, graph_viewer_t *);
//int curnode = va_argi(va, int);
//msg("%x: current node becomes %d\n", v, curnode);
if (curnode < 0)
return 0;
PyObject *result = PyObject_CallMethod(self, (char *)S_ON_SELECT, "i", curnode);
bool allow = (result != NULL && PyObject_IsTrue(result));
Py_XDECREF(result);
return allow ? 0 : 1;
}
int gr_callback(int code, va_list va)
{
int ret;
switch (code)
{
//
case grcode_user_text:
{
mutable_graph_t *g = va_arg(va, mutable_graph_t *);
int node = va_arg(va, int);
const char **result = va_arg(va, const char **);
bgcolor_t *bgcolor = va_arg(va, bgcolor_t *);
ret = on_user_text(g, node, result, bgcolor);
break;
}
//
case grcode_destroyed:
on_destroy(va_arg(va, mutable_graph_t *));
ret = 0;
break;
//
case grcode_clicked:
if (cb_flags & GR_HAVE_CLICKED)
{
graph_viewer_t *gv = va_arg(va, graph_viewer_t *);
selection_item_t *item = va_arg(va, selection_item_t *);
graph_item_t *gitem = va_arg(va, graph_item_t *);
ret = on_clicked(gv, item, gitem);
}
else
ret = 1; // ignore click
break;
//
case grcode_dblclicked:
if (cb_flags & GR_HAVE_DBL_CLICKED)
{
graph_viewer_t *gv = va_arg(va, graph_viewer_t *);
selection_item_t *item = va_arg(va, selection_item_t *);
ret = on_dblclicked(gv, item);
}
else
ret = 1; // ignore
break;
//
case grcode_gotfocus:
if (cb_flags & GR_HAVE_GOTFOCUS)
on_gotfocus(va_arg(va, graph_viewer_t *));
ret = 0;
break;
//
case grcode_lostfocus:
if (cb_flags & GR_HAVE_GOTFOCUS)
on_lostfocus(va_arg(va, graph_viewer_t *));
ret = 0;
break;
case grcode_user_refresh:
on_user_refresh(va_arg(va, mutable_graph_t *));
ret = 1;
break;
case grcode_user_hint:
if (cb_flags & GR_HAVE_USER_HINT)
{
mutable_graph_t *g = va_arg(va, mutable_graph_t *);
int mousenode = va_arg(va, int);
int mouseedge_src = va_arg(va, int);
int mouseedge_dest = va_arg(va, int);
char **hint = va_arg(va, char **);
ret = on_user_hint(g, mousenode, mouseedge_src, mouseedge_dest, hint);
}
else
{
ret = 0;
}
break;
case grcode_changed_current:
if (cb_flags & GR_HAVE_CHANGED_CURRENT)
{
graph_viewer_t *gv = va_arg(va, graph_viewer_t *);
int cur_node = va_arg(va, int);
ret = on_changed_current(gv, cur_node);
}
else
ret = 0; // allow selection change
break;
default:
ret = 0;
break;
}
//grcode_changed_graph, // new graph has been set
//grcode_creating_group, // a group is being created
//grcode_deleting_group, // a group is being deleted
//grcode_group_visibility, // a group is being collapsed/uncollapsed
//grcode_user_size, // calculate node size for user-defined graph
//grcode_user_title, // render node title of a user-defined graph
//grcode_user_draw, // render node of a user-defined graph
return ret;
}
void unbind()
{
if (self == NULL)
return;
// Unbind this object from the python object
PyObject *py_cobj = PyCObject_FromVoidPtr(NULL, NULL);
PyObject_SetAttrString(self, S_M_THIS, py_cobj);
Py_DECREF(py_cobj);
Py_XDECREF(self);
self = NULL;
}
void show()
{
open_tform(form, FORM_MDI|FORM_TAB|FORM_MENU);
}
static py_graph_t *extract_this(PyObject *self)
{
// Try to extract "this" from the python object
PyObject *py_this = PyObject_TryGetAttrString(self, S_M_THIS);
if (py_this == NULL || !PyCObject_Check(py_this))
{
Py_XDECREF(py_this);
return NULL;
}
py_graph_t *ret = (py_graph_t *) PyCObject_AsVoidPtr(py_this);
Py_DECREF(py_this);
return ret;
}
void jump_to_node(int nid)
{
viewer_center_on(gv, nid);
int x, y;
// will return a place only when a node was previously selected
place_t *old_pl = get_custom_viewer_place(gv, false, &x, &y);
if ( old_pl != NULL )
{
#ifdef __BORLANDC__
user_graph_place_t *new_pl = (user_graph_place_t *) old_pl->clone();
#else
// although this works, it may not work in the future
user_graph_place_t *new_pl = (user_graph_place_t *) qalloc(sizeof(user_graph_place_t));
memcpy(new_pl, old_pl, sizeof(user_graph_place_t));
#endif
new_pl->node = nid;
jumpto(gv, new_pl, x, y);
#ifdef __BORLANDC__
delete new_pl;
#else
qfree(new_pl);
#endif
}
}
void refresh()
{
refresh_needed = true;
refresh_viewer(gv);
}
static bool extract_title(PyObject *self, qstring *title)
{
PyObject *py_title = PyObject_TryGetAttrString(self, S_M_TITLE);
if ( py_title == NULL )
return false;
*title = PyString_AsString(py_title);
Py_DECREF(py_title);
return true;
}
int create(PyObject *self, const char *title)
{
// check what callbacks we have
static const struct
{
const char *name;
int have;
} callbacks[] =
{
{S_ON_REFRESH, 0}, // 0 = mandatory callback
{S_ON_GETTEXT, 0},
{S_M_EDGES, -1}, // -1 = mandatory attributes
{S_M_NODES, -1},
{S_ON_HINT, GR_HAVE_USER_HINT},
{S_ON_CLICK, GR_HAVE_CLICKED},
{S_ON_DBL_CLICK, GR_HAVE_DBL_CLICKED},
{S_ON_CLOSE, GR_HAVE_CLOSE},
{S_ON_COMMAND, GR_HAVE_COMMAND},
{S_ON_SELECT, GR_HAVE_CHANGED_CURRENT},
{S_ON_ACTIVATE, GR_HAVE_GOTFOCUS},
{S_ON_DEACTIVATE, GR_HAVE_LOSTFOCUS}
};
cb_flags = 0;
for (int i=0;i<qnumber(callbacks);i++)
{
PyObject *attr = PyObject_TryGetAttrString(self, callbacks[i].name);
int have = callbacks[i].have;
// Mandatory fields not present?
if ((attr == NULL && have <= 0)
// Mandatory callback fields present but not callable?
|| (attr != NULL && have >= 0 && PyCallable_Check(attr) == 0))
{
Py_XDECREF(attr);
return -1;
}
if (have > 0 && attr != NULL)
cb_flags |= have;
Py_XDECREF(attr);
}
// Keep a reference
this->self = self;
Py_INCREF(self);
// Bind py_graph_t to python object
PyObject *py_cobj = PyCObject_FromVoidPtr(this, NULL);
PyObject_SetAttrString(self, S_M_THIS, py_cobj);
Py_DECREF(py_cobj);
// Create form
HWND hwnd = NULL;
form = create_tform(title, &hwnd);
// Link "form" and "py_graph"
tform_pyg.add(form, this);
if (hwnd != NULL)
{
// get a unique graph id
netnode id;
id.create();
gv = create_graph_viewer(form, id, s_callback, this, 0);
open_tform(form, FORM_MDI|FORM_TAB|FORM_MENU);
if (gv != NULL)
viewer_fit_window(gv);
}
else
{
show();
}
viewer_fit_window(gv);
return 0;
}
Py_ssize_t add_command(const char *title, const char *hotkey)
{
if ( (cb_flags & GR_HAVE_COMMAND) == 0 || gv == NULL)
return 0;
Py_ssize_t cmd_id = cmdid_pyg.id();
bool ok = viewer_add_menu_item(gv, title, s_menucb, (void *)cmd_id, hotkey, 0);
if (!ok)
return 0;
cmdid_pyg.add(this);
return cmd_id;
}
public:
py_graph_t()
{
form = NULL;
gv = NULL;
refresh_needed = true;
self = NULL;
}
static void SelectNode(PyObject *self, int nid)
{
py_graph_t *_this = extract_this(self);
if (_this == NULL || _this->form == NULL)
return;
_this->jump_to_node(0);
}
static Py_ssize_t AddCommand(PyObject *self, const char *title, const char *hotkey)
{
py_graph_t *_this = extract_this(self);
if (_this == NULL || _this->form == NULL)
return 0;
return _this->add_command(title, hotkey);
}
static void Close(PyObject *self)
{
py_graph_t *_this = extract_this(self);
if (_this == NULL || _this->form == NULL)
return;
close_tform(_this->form, 0);
}
static void Refresh(PyObject *self)
{
py_graph_t *_this = extract_this(self);
if (_this == NULL)
return;
_this->refresh();
}
static py_graph_t *Show(PyObject *self)
{
py_graph_t *ret = extract_this(self);
if (ret == NULL)
{
qstring title;
if (!extract_title(self, &title))
return NULL;
// Form already created? try to get associated py_graph instance
// so that we reuse it
ret = tform_pyg.get(find_tform(title.c_str()));
// Instance not found? create a new one
if (ret == NULL)
ret = new py_graph_t();
else
{
// unbind so we are rebound
ret->unbind();
ret->refresh_needed = true;
}
if (ret->create(self, title.c_str()) < 0)
{
delete ret;
ret = NULL;
}
}
else
{
ret->show();
}
return ret;
}
};
py_graph_t::tform_pygraph_map_t py_graph_t::tform_pyg;
py_graph_t::cmdid_map_t py_graph_t::cmdid_pyg;
bool pyg_show(PyObject *self)
{
return py_graph_t::Show(self) != NULL;
}
void pyg_refresh(PyObject *self)
{
py_graph_t::Refresh(self);
}
void pyg_close(PyObject *self)
{
py_graph_t::Close(self);
}
Py_ssize_t pyg_add_command(PyObject *self, const char *title, const char *hotkey)
{
return py_graph_t::AddCommand(self, title, hotkey);
}
void pyg_select_node(PyObject *self, int nid)
{
py_graph_t::SelectNode(self, nid);
}
//</code(py_graph)>
%}
%pythoncode %{
#<pycode(py_graph)>
class GraphViewer:
"""This class wraps the user graphing facility provided by the graph.hpp file"""
def __init__(self, title, close_open = False):
"""
Constructs the GraphView object.
Please do not remove or rename the private fields
@param title: The title of the graph window
@param close_open: Should it attempt to close an existing graph (with same title) before creating this graph?
"""
self._title = title
self._nodes = []
self._edges = []
self._close_open = close_open
def AddNode(self, obj):
"""Creates a node associated with the given object and returns the node id"""
id = len(self._nodes)
self._nodes.append(obj)
return id
def AddEdge(self, src_node, dest_node):
"""Creates an edge between two given node ids"""
self._edges.append( (src_node, dest_node) )
def Clear(self):
"""Clears all the nodes and edges"""
self._nodes = []
self._edges = []
def __getitem__(self, idx):
"""Returns a reference to the object associated with this node id"""
if idx > len(self._nodes):
raise StopIteration
return self._nodes[idx]
def Count(self):
"""Returns the node count"""
return len(self._nodes)
def Close(self):
"""
Closes the graph.
It is possible to call Show() again (which will recreate the graph)
"""
_idaapi.pyg_close(self)
def Refresh(self):
"""
Refreshes the graph. This causes the OnRefresh() to be called
"""
_idaapi.pyg_refresh(self)
def Show(self):
"""
Shows an existing graph or creates a new one
@return: Boolean
"""
if self._close_open:
frm = _idaapi.find_tform(self._title)
if frm:
_idaapi.close_tform(frm, 0)
return _idaapi.pyg_show(self)
def Select(self, node_id):
"""Selects a node on the graph"""
_idaapi.pyg_select_node(self, node_id)
def AddCommand(self, title, hotkey):
"""
Adds a menu command to the graph.
Once a command is added, a command id is returned. The commands are handled inside the OnCommand() handler
@return: 0 or the command id
"""
return _idaapi.pyg_add_command(self, title, hotkey)
def OnRefresh(self):
"""
Event called when the graph is refreshed or first created.
From this event you are supposed to create nodes and edges.
@note: ***It is important to clear previous nodes before adding nodes.***
@return: Returning true tells the graph viewer to use the items. Otherwise old items will be used.
"""
self.Clear()
return True
# def OnActivate(self):
# """Triggered when the graph window gets the focus"""
# print "Activated...."
# def OnDeactivate(self):
# """Triggered when the graph window loses the focus"""
# print "Deactivated...."
# def OnSelect(self, node_id):
# """
# Triggered when a node is being selected
# @return: Return True to allow the node to be selected or False to disallow node selection change
# """
# # allow selection change
# return True
# def OnGetText(self, node_id):
# """
# Triggered when the graph viewer wants the text and color for a given node.
# This callback is triggered one time for a given node (the value will be cached and used later without calling Python).
# When you call refresh then again this callback will be called for each node.
#
# @return: Return a string to describe the node text or return a tuple (node_text, node_color) to describe both text and color
# """
# return str(self[node_id])
# def OnHint(self, node_id):
# """
# Triggered when the graph viewer wants to retrieve hint text associated with a given node
#
# @return: None if no hint is avail or a string designating the hint
# """
# return "hint for " + str(node_id)
# def OnClose(self):
# """Triggered when the graph viewer window is being closed"""
# print "Closing......."
# def OnClick(self, node_id):
# """
# Triggered when a node is clicked
# @return: False to ignore the click and true otherwise
# """
# print "clicked on", self[node_id]
# return True
# def OnDblClick(self, node_id):
# """
# Triggerd when a node is double-clicked.
# @note: check OnClick() event
# """
# print "dblclicked on", self[node_id]
# return True
# def OnCommand(self, cmd_id):
# """
# Triggered when a menu command is selected through the menu or its hotkey
# """
# print "command:", cmd_id
#</pycode(py_graph)>
%}
%inline %{
//<inline(py_graph)>
void pyg_refresh(PyObject *self);
void pyg_close(PyObject *self);
Py_ssize_t pyg_add_command(PyObject *self, const char *title, const char *hotkey);
void pyg_select_node(PyObject *self, int nid);
bool pyg_show(PyObject *self);
//</inline(py_graph)>
%}
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