cpython/Lib/idlelib/StackViewer.py at 3.5 · python/cpython · GitHub

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import os

import sys

import linecache

import re

import tkinter as tk

from idlelib.TreeWidget import TreeNode, TreeItem, ScrolledCanvas

from idlelib.ObjectBrowser import ObjectTreeItem, make_objecttreeitem

from idlelib.PyShell import PyShellFileList

def StackBrowser(root, flist=None, tb=None, top=None):

if top is None:

top = tk.Toplevel(root)

sc = ScrolledCanvas(top, bg="white", highlightthickness=0)

sc.frame.pack(expand=1, fill="both")

item = StackTreeItem(flist, tb)

node = TreeNode(sc.canvas, None, item)

node.expand()

class StackTreeItem(TreeItem):

def __init__(self, flist=None, tb=None):

self.flist = flist

self.stack = self.get_stack(tb)

self.text = self.get_exception()

def get_stack(self, tb):

if tb is None:

tb = sys.last_traceback

stack = []

if tb and tb.tb_frame is None:

tb = tb.tb_next

while tb is not None:

stack.append((tb.tb_frame, tb.tb_lineno))

tb = tb.tb_next

return stack

def get_exception(self):

type = sys.last_type

value = sys.last_value

if hasattr(type, "__name__"):

type = type.__name__

s = str(type)

if value is not None:

s = s + ": " + str(value)

return s

def GetText(self):

return self.text

def GetSubList(self):

sublist = []

for info in self.stack:

item = FrameTreeItem(info, self.flist)

sublist.append(item)

return sublist

class FrameTreeItem(TreeItem):

def __init__(self, info, flist):

self.info = info

self.flist = flist

def GetText(self):

frame, lineno = self.info

try:

modname = frame.f_globals["__name__"]

except:

modname = "?"

code = frame.f_code

filename = code.co_filename

funcname = code.co_name

sourceline = linecache.getline(filename, lineno)

sourceline = sourceline.strip()

if funcname in ("?", "", None):

item = "%s, line %d: %s" % (modname, lineno, sourceline)

else:

item = "%s.%s(...), line %d: %s" % (modname, funcname,

lineno, sourceline)

return item

def GetSubList(self):

frame, lineno = self.info

sublist = []

if frame.f_globals is not frame.f_locals:

item = VariablesTreeItem("<locals>", frame.f_locals, self.flist)

sublist.append(item)

item = VariablesTreeItem("<globals>", frame.f_globals, self.flist)

sublist.append(item)

return sublist

def OnDoubleClick(self):

if self.flist:

frame, lineno = self.info

filename = frame.f_code.co_filename

if os.path.isfile(filename):

self.flist.gotofileline(filename, lineno)

class VariablesTreeItem(ObjectTreeItem):

def GetText(self):

return self.labeltext

def GetLabelText(self):

return None

def IsExpandable(self):

return len(self.object) > 0

def GetSubList(self):

sublist = []

for key in self.object.keys():

try:

value = self.object[key]

except KeyError:

continue

def setfunction(value, key=key, object=self.object):

object[key] = value

item = make_objecttreeitem(key + " =", value, setfunction)

sublist.append(item)

return sublist

def keys(self): # unused, left for possible 3rd party use

return list(self.object.keys())

def _stack_viewer(parent):

root = tk.Tk()

root.title("Test StackViewer")

width, height, x, y = list(map(int, re.split('[x+]', parent.geometry())))

root.geometry("+%d+%d"%(x, y + 150))

flist = PyShellFileList(root)

try: # to obtain a traceback object

intentional_name_error

except NameError:

exc_type, exc_value, exc_tb = sys.exc_info()

# inject stack trace to sys

sys.last_type = exc_type

sys.last_value = exc_value

sys.last_traceback = exc_tb

StackBrowser(root, flist=flist, top=root, tb=exc_tb)

# restore sys to original state

del sys.last_type

del sys.last_value

del sys.last_traceback

if __name__ == '__main__':

from idlelib.idle_test.htest import run

run(_stack_viewer)

cpython/Lib/idlelib/StackViewer.py at 3.5 · python/cpython · GitHub

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