/Lib/idlelib/StackViewer.py

http://unladen-swallow.googlecode.com/ · Python · 137 lines · 115 code · 22 blank · 0 comment · 19 complexity · 7ecff1cdce30c5bf65384df295c4ab4b MD5 · raw file

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