Home | History | Annotate | Download | only in idlelib 
      1 import os
      2 import sys
      3 import linecache
      4 
      5 from idlelib.TreeWidget import TreeNode, TreeItem, ScrolledCanvas
      6 from idlelib.ObjectBrowser import ObjectTreeItem, make_objecttreeitem
      7 
      8 def StackBrowser(root, flist=None, tb=None, top=None):
      9     if top is None:
     10         from Tkinter import Toplevel
     11         top = Toplevel(root)
     12     sc = ScrolledCanvas(top, bg="white", highlightthickness=0)
     13     sc.frame.pack(expand=1, fill="both")
     14     item = StackTreeItem(flist, tb)
     15     node = TreeNode(sc.canvas, None, item)
     16     node.expand()
     17 
     18 class StackTreeItem(TreeItem):
     19 
     20     def __init__(self, flist=None, tb=None):
     21         self.flist = flist
     22         self.stack = self.get_stack(tb)
     23         self.text = self.get_exception()
     24 
     25     def get_stack(self, tb):
     26         if tb is None:
     27             tb = sys.last_traceback
     28         stack = []
     29         if tb and tb.tb_frame is None:
     30             tb = tb.tb_next
     31         while tb is not None:
     32             stack.append((tb.tb_frame, tb.tb_lineno))
     33             tb = tb.tb_next
     34         return stack
     35 
     36     def get_exception(self):
     37         type = sys.last_type
     38         value = sys.last_value
     39         if hasattr(type, "__name__"):
     40             type = type.__name__
     41         s = str(type)
     42         if value is not None:
     43             s = s + ": " + str(value)
     44         return s
     45 
     46     def GetText(self):
     47         return self.text
     48 
     49     def GetSubList(self):
     50         sublist = []
     51         for info in self.stack:
     52             item = FrameTreeItem(info, self.flist)
     53             sublist.append(item)
     54         return sublist
     55 
     56 class FrameTreeItem(TreeItem):
     57 
     58     def __init__(self, info, flist):
     59         self.info = info
     60         self.flist = flist
     61 
     62     def GetText(self):
     63         frame, lineno = self.info
     64         try:
     65             modname = frame.f_globals["__name__"]
     66         except:
     67             modname = "?"
     68         code = frame.f_code
     69         filename = code.co_filename
     70         funcname = code.co_name
     71         sourceline = linecache.getline(filename, lineno)
     72         sourceline = sourceline.strip()
     73         if funcname in ("?", "", None):
     74             item = "%s, line %d: %s" % (modname, lineno, sourceline)
     75         else:
     76             item = "%s.%s(...), line %d: %s" % (modname, funcname,
     77                                              lineno, sourceline)
     78         return item
     79 
     80     def GetSubList(self):
     81         frame, lineno = self.info
     82         sublist = []
     83         if frame.f_globals is not frame.f_locals:
     84             item = VariablesTreeItem("<locals>", frame.f_locals, self.flist)
     85             sublist.append(item)
     86         item = VariablesTreeItem("<globals>", frame.f_globals, self.flist)
     87         sublist.append(item)
     88         return sublist
     89 
     90     def OnDoubleClick(self):
     91         if self.flist:
     92             frame, lineno = self.info
     93             filename = frame.f_code.co_filename
     94             if os.path.isfile(filename):
     95                 self.flist.gotofileline(filename, lineno)
     96 
     97 class VariablesTreeItem(ObjectTreeItem):
     98 
     99     def GetText(self):
    100         return self.labeltext
    101 
    102     def GetLabelText(self):
    103         return None
    104 
    105     def IsExpandable(self):
    106         return len(self.object) > 0
    107 
    108     def keys(self):
    109         return self.object.keys()
    110 
    111     def GetSubList(self):
    112         sublist = []
    113         for key in self.keys():
    114             try:
    115                 value = self.object[key]
    116             except KeyError:
    117                 continue
    118             def setfunction(value, key=key, object=self.object):
    119                 object[key] = value
    120             item = make_objecttreeitem(key + " =", value, setfunction)
    121             sublist.append(item)
    122         return sublist
    123 
    124 
    125 def _test():
    126     try:
    127         import testcode
    128         reload(testcode)
    129     except:
    130         sys.last_type, sys.last_value, sys.last_traceback = sys.exc_info()
    131     from Tkinter import Tk
    132     root = Tk()
    133     StackBrowser(None, top=root)
    134     root.mainloop()
    135 
    136 if __name__ == "__main__":
    137     _test()
    138