forked from qt-creator/qt-creator
aa4485af85
The (re-)enables basic stepping, data display, frame selection etc for Python 2 and 3. Arguments passing, jump to line etc. don't work yet. Change-Id: I8af03e5905092360eb268ba3081a1236b1f8577f Reviewed-by: Christian Stenger <christian.stenger@theqtcompany.com>
2049 lines
72 KiB
Python
2049 lines
72 KiB
Python
import os
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import re
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import sys
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import dis
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import code
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import glob
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import base64
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import signal
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import string
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import inspect
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import traceback
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import linecache
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import fnmatch
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class QuitException(Exception):
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pass
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class Breakpoint:
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"""Breakpoint class.
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Breakpoints are indexed by number through bpbynumber and by
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the file,line tuple using bplist. The former points to a
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single instance of class Breakpoint. The latter points to a
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list of such instances since there may be more than one
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breakpoint per line.
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"""
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next = 1 # Next bp to be assigned
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bplist = {} # indexed by (file, lineno) tuple
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bpbynumber = [None] # Each entry is None or an instance of Bpt
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# index 0 is unused, except for marking an
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# effective break .... see effective()
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def __init__(self, file, line, temporary=False, cond=None, funcname=None):
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self.funcname = funcname
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# Needed if funcname is not None.
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self.func_first_executable_line = None
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self.file = file # This better be in canonical form!
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self.line = line
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self.temporary = temporary
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self.cond = cond
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self.enabled = True
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self.ignore = 0
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self.hits = 0
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self.number = Breakpoint.next
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Breakpoint.next += 1
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# Build the two lists
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self.bpbynumber.append(self)
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if (file, line) in self.bplist:
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self.bplist[file, line].append(self)
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else:
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self.bplist[file, line] = [self]
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def deleteMe(self):
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index = (self.file, self.line)
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self.bpbynumber[self.number] = None # No longer in list
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self.bplist[index].remove(self)
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if not self.bplist[index]:
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# No more bp for this f:l combo
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del self.bplist[index]
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def enable(self):
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self.enabled = True
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def disable(self):
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self.enabled = False
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def __str__(self):
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return 'breakpoint %s at %s:%s' % (self.number, self.file, self.line)
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def checkfuncname(b, frame):
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"""Check whether we should break here because of `b.funcname`."""
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if not b.funcname:
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# Breakpoint was set via line number.
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if b.line != frame.f_lineno:
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# Breakpoint was set at a line with a def statement and the function
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# defined is called: don't break.
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return False
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return True
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# Breakpoint set via function name.
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if frame.f_code.co_name != b.funcname:
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# It's not a function call, but rather execution of def statement.
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return False
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# We are in the right frame.
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if not b.func_first_executable_line:
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# The function is entered for the 1st time.
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b.func_first_executable_line = frame.f_lineno
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if b.func_first_executable_line != frame.f_lineno:
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# But we are not at the first line number: don't break.
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return False
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return True
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# Determines if there is an effective (active) breakpoint at this
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# line of code. Returns breakpoint number or 0 if none
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def effective(file, line, frame):
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"""Determine which breakpoint for this file:line is to be acted upon.
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Called only if we know there is a bpt at this
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location. Returns breakpoint that was triggered and a flag
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that indicates if it is ok to delete a temporary bp.
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"""
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possibles = Breakpoint.bplist[file, line]
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for b in possibles:
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if not b.enabled:
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continue
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if not checkfuncname(b, frame):
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continue
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# Count every hit when bp is enabled
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b.hits += 1
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if not b.cond:
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# If unconditional, and ignoring go on to next, else break
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if b.ignore > 0:
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b.ignore -= 1
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continue
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else:
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# breakpoint and marker that it's ok to delete if temporary
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return (b, True)
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else:
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# Conditional bp.
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# Ignore count applies only to those bpt hits where the
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# condition evaluates to true.
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try:
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val = eval(b.cond, frame.f_globals, frame.f_locals)
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if val:
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if b.ignore > 0:
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b.ignore -= 1
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# continue
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else:
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return (b, True)
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# else:
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# continue
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except:
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# if eval fails, most conservative thing is to stop on
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# breakpoint regardless of ignore count. Don't delete
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# temporary, as another hint to user.
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return (b, False)
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return (None, None)
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#__all__ = ["Dumper"]
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def find_function(funcname, filename):
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cre = re.compile(r'def\s+%s\s*[(]' % re.escape(funcname))
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try:
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fp = open(filename)
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except OSError:
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return None
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# consumer of this info expects the first line to be 1
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with fp:
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for lineno, line in enumerate(fp, start=1):
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if cre.match(line):
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return funcname, filename, lineno
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return None
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def getsourcelines(obj):
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lines, lineno = inspect.findsource(obj)
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if inspect.isframe(obj) and obj.f_globals is obj.f_locals:
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# must be a module frame: do not try to cut a block out of it
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return lines, 1
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elif inspect.ismodule(obj):
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return lines, 1
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return inspect.getblock(lines[lineno:]), lineno+1
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def lasti2lineno(code, lasti):
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linestarts = list(dis.findlinestarts(code))
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linestarts.reverse()
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for i, lineno in linestarts:
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if lasti >= i:
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return lineno
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return 0
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class _rstr(str):
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"""String that doesn't quote its repr."""
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def __repr__(self):
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return self
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class Dumper:
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prompt = '(Cmd) '
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identchars = string.ascii_letters + string.digits + '_'
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lastcmd = ''
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doc_leader = ""
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doc_header = "Documented commands (type help <topic>):"
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misc_header = "Miscellaneous help topics:"
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undoc_header = "Undocumented commands:"
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nohelp = "*** No help on %s"
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use_rawinput = 1
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def __init__(self, stdin=None, stdout=None):
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self.skip = None
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self.breaks = {}
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self.fncache = {}
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self.frame_returning = None
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nosigint = False
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if stdin is not None:
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self.stdin = stdin
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else:
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self.stdin = sys.stdin
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if stdout is not None:
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self.stdout = stdout
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else:
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self.stdout = sys.stdout
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self.cmdqueue = []
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if stdout:
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self.use_rawinput = 0
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self.prompt = '(Pdb) '
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self.aliases = {}
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self.displaying = {}
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self.mainpyfile = ''
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self._wait_for_mainpyfile = False
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self.tb_lineno = {}
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# Try to load readline if it exists
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try:
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import readline
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# remove some common file name delimiters
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readline.set_completer_delims(' \t\n`@#$%^&*()=+[{]}\\|;:\'",<>?')
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except ImportError:
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pass
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self.allow_kbdint = False
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self.nosigint = nosigint
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self.commands = {} # associates a command list to breakpoint numbers
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self.commands_doprompt = {} # for each bp num, tells if the prompt
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# must be disp. after execing the cmd list
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self.commands_silent = {} # for each bp num, tells if the stack trace
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# must be disp. after execing the cmd list
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self.commands_bnum = None # The breakpoint number for which we are
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# defining a list
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def canonic(self, filename):
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if filename == "<" + filename[1:-1] + ">":
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return filename
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canonic = self.fncache.get(filename)
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if not canonic:
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canonic = os.path.abspath(filename)
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canonic = os.path.normcase(canonic)
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self.fncache[filename] = canonic
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return canonic
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def reset(self):
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import linecache
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linecache.checkcache()
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self.botframe = None
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self._set_stopinfo(None, None)
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self.forget()
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def trace_dispatch(self, frame, event, arg):
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if self.quitting:
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return # None
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if event == 'line':
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return self.dispatch_line(frame)
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if event == 'call':
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return self.dispatch_call(frame, arg)
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if event == 'return':
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return self.dispatch_return(frame, arg)
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if event == 'exception':
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return self.dispatch_exception(frame, arg)
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if event == 'c_call':
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return self.trace_dispatch
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if event == 'c_exception':
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return self.trace_dispatch
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if event == 'c_return':
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return self.trace_dispatch
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print('Bdb.dispatch: unknown debugging event:', repr(event))
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return self.trace_dispatch
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def dispatch_line(self, frame):
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if self.stop_here(frame) or self.break_here(frame):
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self.user_line(frame)
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if self.quitting: raise QuitException
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return self.trace_dispatch
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def dispatch_call(self, frame, arg):
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# XXX 'arg' is no longer used
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if self.botframe is None:
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# First call of dispatch since reset()
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self.botframe = frame.f_back # (CT) Note that this may also be None!
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return self.trace_dispatch
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if not (self.stop_here(frame) or self.break_anywhere(frame)):
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# No need to trace this function
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return # None
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# Ignore call events in generator except when stepping.
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if self.stopframe and frame.f_code.co_flags & inspect.CO_GENERATOR:
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return self.trace_dispatch
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self.user_call(frame, arg)
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if self.quitting: raise QuitException
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return self.trace_dispatch
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def dispatch_return(self, frame, arg):
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if self.stop_here(frame) or frame == self.returnframe:
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# Ignore return events in generator except when stepping.
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if self.stopframe and frame.f_code.co_flags & inspect.CO_GENERATOR:
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return self.trace_dispatch
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try:
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self.frame_returning = frame
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self.user_return(frame, arg)
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finally:
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self.frame_returning = None
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if self.quitting: raise QuitException
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# The user issued a 'next' or 'until' command.
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if self.stopframe is frame and self.stoplineno != -1:
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self._set_stopinfo(None, None)
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return self.trace_dispatch
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def dispatch_exception(self, frame, arg):
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if self.stop_here(frame):
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# When stepping with next/until/return in a generator frame, skip
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# the internal StopIteration exception (with no traceback)
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# triggered by a subiterator run with the 'yield from' statement.
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if not (frame.f_code.co_flags & inspect.CO_GENERATOR
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and arg[0] is StopIteration and arg[2] is None):
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self.user_exception(frame, arg)
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if self.quitting: raise QuitException
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# Stop at the StopIteration or GeneratorExit exception when the user
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# has set stopframe in a generator by issuing a return command, or a
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# next/until command at the last statement in the generator before the
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# exception.
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elif (self.stopframe and frame is not self.stopframe
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and self.stopframe.f_code.co_flags & inspect.CO_GENERATOR
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and arg[0] in (StopIteration, GeneratorExit)):
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self.user_exception(frame, arg)
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if self.quitting: raise QuitException
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return self.trace_dispatch
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# Normally derived classes don't override the following
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# methods, but they may if they want to redefine the
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# definition of stopping and breakpoints.
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def is_skipped_module(self, module_name):
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for pattern in self.skip:
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if fnmatch.fnmatch(module_name, pattern):
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return True
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return False
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def stop_here(self, frame):
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# (CT) stopframe may now also be None, see dispatch_call.
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# (CT) the former test for None is therefore removed from here.
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if self.skip and \
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self.is_skipped_module(frame.f_globals.get('__name__')):
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return False
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if frame is self.stopframe:
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if self.stoplineno == -1:
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return False
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return frame.f_lineno >= self.stoplineno
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if not self.stopframe:
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return True
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return False
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def break_here(self, frame):
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filename = self.canonic(frame.f_code.co_filename)
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if filename not in self.breaks:
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return False
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lineno = frame.f_lineno
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if lineno not in self.breaks[filename]:
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# The line itself has no breakpoint, but maybe the line is the
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# first line of a function with breakpoint set by function name.
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lineno = frame.f_code.co_firstlineno
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if lineno not in self.breaks[filename]:
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return False
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# flag says ok to delete temp. bp
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(bp, flag) = effective(filename, lineno, frame)
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if bp:
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self.currentbp = bp.number
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if (flag and bp.temporary):
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self.do_clear(str(bp.number))
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return True
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else:
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return False
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def break_anywhere(self, frame):
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return self.canonic(frame.f_code.co_filename) in self.breaks
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def _set_stopinfo(self, stopframe, returnframe, stoplineno=0):
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self.stopframe = stopframe
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self.returnframe = returnframe
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self.quitting = False
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# stoplineno >= 0 means: stop at line >= the stoplineno
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# stoplineno -1 means: don't stop at all
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self.stoplineno = stoplineno
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# Derived classes and clients can call the following methods
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# to affect the stepping state.
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def set_until(self, frame, lineno=None):
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"""Stop when the line with the line no greater than the current one is
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reached or when returning from current frame"""
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# the name "until" is borrowed from gdb
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if lineno is None:
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lineno = frame.f_lineno + 1
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self._set_stopinfo(frame, frame, lineno)
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def set_step(self):
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"""Stop after one line of code."""
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# Issue #13183: pdb skips frames after hitting a breakpoint and running
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# step commands.
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# Restore the trace function in the caller (that may not have been set
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# for performance reasons) when returning from the current frame.
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if self.frame_returning:
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caller_frame = self.frame_returning.f_back
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if caller_frame and not caller_frame.f_trace:
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caller_frame.f_trace = self.trace_dispatch
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self._set_stopinfo(None, None)
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def set_next(self, frame):
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"""Stop on the next line in or below the given frame."""
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self._set_stopinfo(frame, None)
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def set_return(self, frame):
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"""Stop when returning from the given frame."""
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if frame.f_code.co_flags & inspect.CO_GENERATOR:
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self._set_stopinfo(frame, None, -1)
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else:
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self._set_stopinfo(frame.f_back, frame)
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def set_trace(self, frame=None):
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"""Start debugging from `frame`.
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If frame is not specified, debugging starts from caller's frame.
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"""
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if frame is None:
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frame = sys._getframe().f_back
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self.reset()
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while frame:
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frame.f_trace = self.trace_dispatch
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self.botframe = frame
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frame = frame.f_back
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self.set_step()
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sys.settrace(self.trace_dispatch)
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def set_continue(self):
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# Don't stop except at breakpoints or when finished
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self._set_stopinfo(self.botframe, None, -1)
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if not self.breaks:
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# no breakpoints; run without debugger overhead
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sys.settrace(None)
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frame = sys._getframe().f_back
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while frame and frame is not self.botframe:
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del frame.f_trace
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frame = frame.f_back
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def set_quit(self):
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self.stopframe = self.botframe
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self.returnframe = None
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self.quitting = True
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sys.settrace(None)
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# Derived classes and clients can call the following methods
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# to manipulate breakpoints. These methods return an
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# error message if something went wrong, None if all is well.
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# Set_break prints out the breakpoint line and file:lineno.
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# Call self.get_*break*() to see the breakpoints or better
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# for bp in Breakpoint.bpbynumber: if bp: bp.bpprint().
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def set_break(self, filename, lineno, temporary=False, cond=None,
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funcname=None):
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filename = self.canonic(filename)
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import linecache # Import as late as possible
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line = linecache.getline(filename, lineno)
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if not line:
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return 'Line %s:%d does not exist' % (filename, lineno)
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list = self.breaks.setdefault(filename, [])
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if lineno not in list:
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list.append(lineno)
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bp = Breakpoint(filename, lineno, temporary, cond, funcname)
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def _prune_breaks(self, filename, lineno):
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if (filename, lineno) not in Breakpoint.bplist:
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self.breaks[filename].remove(lineno)
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if not self.breaks[filename]:
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del self.breaks[filename]
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def clear_break(self, filename, lineno):
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filename = self.canonic(filename)
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if filename not in self.breaks:
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return 'There are no breakpoints in %s' % filename
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if lineno not in self.breaks[filename]:
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return 'There is no breakpoint at %s:%d' % (filename, lineno)
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# If there's only one bp in the list for that file,line
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# pair, then remove the breaks entry
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for bp in Breakpoint.bplist[filename, lineno][:]:
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bp.deleteMe()
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self._prune_breaks(filename, lineno)
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def clear_bpbynumber(self, arg):
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try:
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bp = self.get_bpbynumber(arg)
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except ValueError as err:
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return str(err)
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bp.deleteMe()
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self._prune_breaks(bp.file, bp.line)
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def clear_all_file_breaks(self, filename):
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filename = self.canonic(filename)
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if filename not in self.breaks:
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return 'There are no breakpoints in %s' % filename
|
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for line in self.breaks[filename]:
|
|
blist = Breakpoint.bplist[filename, line]
|
|
for bp in blist:
|
|
bp.deleteMe()
|
|
del self.breaks[filename]
|
|
|
|
def clear_all_breaks(self):
|
|
if not self.breaks:
|
|
return 'There are no breakpoints'
|
|
for bp in Breakpoint.bpbynumber:
|
|
if bp:
|
|
bp.deleteMe()
|
|
self.breaks = {}
|
|
|
|
def get_bpbynumber(self, arg):
|
|
if not arg:
|
|
raise ValueError('Breakpoint number expected')
|
|
try:
|
|
number = int(arg)
|
|
except ValueError:
|
|
raise ValueError('Non-numeric breakpoint number %s' % arg)
|
|
try:
|
|
bp = Breakpoint.bpbynumber[number]
|
|
except IndexError:
|
|
raise ValueError('Breakpoint number %d out of range' % number)
|
|
if bp is None:
|
|
raise ValueError('Breakpoint %d already deleted' % number)
|
|
return bp
|
|
|
|
def get_break(self, filename, lineno):
|
|
filename = self.canonic(filename)
|
|
return filename in self.breaks and \
|
|
lineno in self.breaks[filename]
|
|
|
|
def get_breaks(self, filename, lineno):
|
|
filename = self.canonic(filename)
|
|
return filename in self.breaks and \
|
|
lineno in self.breaks[filename] and \
|
|
Breakpoint.bplist[filename, lineno] or []
|
|
|
|
def get_file_breaks(self, filename):
|
|
filename = self.canonic(filename)
|
|
if filename in self.breaks:
|
|
return self.breaks[filename]
|
|
else:
|
|
return []
|
|
|
|
def get_all_breaks(self):
|
|
return self.breaks
|
|
|
|
# Derived classes and clients can call the following method
|
|
# to get a data structure representing a stack trace.
|
|
|
|
def get_stack(self, f, t):
|
|
stack = []
|
|
if t and t.tb_frame is f:
|
|
t = t.tb_next
|
|
while f is not None:
|
|
stack.append((f, f.f_lineno))
|
|
if f is self.botframe:
|
|
break
|
|
f = f.f_back
|
|
stack.reverse()
|
|
i = max(0, len(stack) - 1)
|
|
while t is not None:
|
|
stack.append((t.tb_frame, t.tb_lineno))
|
|
t = t.tb_next
|
|
if f is None:
|
|
i = max(0, len(stack) - 1)
|
|
return stack, i
|
|
|
|
def format_stack_entry(self, frame_lineno, lprefix=': '):
|
|
import linecache
|
|
#import reprlib
|
|
frame, lineno = frame_lineno
|
|
filename = self.canonic(frame.f_code.co_filename)
|
|
s = '%s(%r)' % (filename, lineno)
|
|
if frame.f_code.co_name:
|
|
s += frame.f_code.co_name
|
|
else:
|
|
s += "<lambda>"
|
|
if '__args__' in frame.f_locals:
|
|
args = frame.f_locals['__args__']
|
|
else:
|
|
args = None
|
|
#if args:
|
|
# s += reprlib.repr(args)
|
|
#else:
|
|
s += '(...)'
|
|
#if '__return__' in frame.f_locals:
|
|
# rv = frame.f_locals['__return__']
|
|
# s += '->'
|
|
# s += reprlib.repr(rv)
|
|
line = linecache.getline(filename, lineno, frame.f_globals)
|
|
if line:
|
|
s += lprefix + line.strip()
|
|
return s
|
|
|
|
# The following methods can be called by clients to use
|
|
# a debugger to debug a statement or an expression.
|
|
# Both can be given as a string, or a code object.
|
|
|
|
def run(self, cmd, globals=None, locals=None):
|
|
if globals is None:
|
|
import __main__
|
|
globals = __main__.__dict__
|
|
if locals is None:
|
|
locals = globals
|
|
self.reset()
|
|
if isinstance(cmd, str):
|
|
cmd = compile(cmd, "<string>", "exec")
|
|
sys.settrace(self.trace_dispatch)
|
|
try:
|
|
exec(cmd, globals, locals)
|
|
except QuitException:
|
|
pass
|
|
finally:
|
|
self.quitting = True
|
|
sys.settrace(None)
|
|
|
|
def runeval(self, expr, globals=None, locals=None):
|
|
if globals is None:
|
|
import __main__
|
|
globals = __main__.__dict__
|
|
if locals is None:
|
|
locals = globals
|
|
self.reset()
|
|
sys.settrace(self.trace_dispatch)
|
|
try:
|
|
return eval(expr, globals, locals)
|
|
except QuitException:
|
|
pass
|
|
finally:
|
|
self.quitting = True
|
|
sys.settrace(None)
|
|
|
|
def runctx(self, cmd, globals, locals):
|
|
# B/W compatibility
|
|
self.run(cmd, globals, locals)
|
|
|
|
# This method is more useful to debug a single function call.
|
|
|
|
def runcall(self, func, *args, **kwds):
|
|
self.reset()
|
|
sys.settrace(self.trace_dispatch)
|
|
res = None
|
|
try:
|
|
res = func(*args, **kwds)
|
|
except QuitException:
|
|
pass
|
|
finally:
|
|
self.quitting = True
|
|
sys.settrace(None)
|
|
return res
|
|
|
|
|
|
def cmdloop(self):
|
|
"""Repeatedly issue a prompt, accept input, parse an initial prefix
|
|
off the received input, and dispatch to action methods, passing them
|
|
the remainder of the line as argument.
|
|
|
|
"""
|
|
|
|
# Handle display expressions
|
|
displaying = self.displaying.get(self.curframe)
|
|
if displaying:
|
|
for expr, oldvalue in displaying.items():
|
|
newvalue = self._getval_except(expr)
|
|
# check for identity first; this prevents custom __eq__ to
|
|
# be called at every loop, and also prevents instances whose
|
|
# fields are changed to be displayed
|
|
if newvalue is not oldvalue and newvalue != oldvalue:
|
|
displaying[expr] = newvalue
|
|
self.message('display %s: %r [old: %r]' %
|
|
(expr, newvalue, oldvalue))
|
|
|
|
try:
|
|
stop = None
|
|
while not stop:
|
|
if self.cmdqueue:
|
|
line = self.cmdqueue.pop(0)
|
|
else:
|
|
if self.use_rawinput:
|
|
try:
|
|
if sys.version_info[0] == 2:
|
|
line = raw_input(self.prompt)
|
|
else:
|
|
line = input(self.prompt)
|
|
except EOFError:
|
|
line = 'EOF'
|
|
else:
|
|
self.stdout.write(self.prompt)
|
|
self.stdout.flush()
|
|
line = self.stdin.readline()
|
|
if not len(line):
|
|
line = 'EOF'
|
|
else:
|
|
line = line.rstrip('\r\n')
|
|
print("LINE: %s" % line)
|
|
#line = self.precmd(line)
|
|
stop = self.onecmd(line)
|
|
#stop = self.postcmd(stop, line)
|
|
finally:
|
|
pass
|
|
|
|
|
|
def precmd(self, line):
|
|
"""Hook method executed just before the command line is
|
|
interpreted, but after the input prompt is generated and issued.
|
|
|
|
"""
|
|
return line
|
|
|
|
def postcmd(self, stop, line):
|
|
"""Hook method executed just after a command dispatch is finished."""
|
|
return stop
|
|
|
|
def parseline(self, line):
|
|
"""Parse the line into a command name and a string containing
|
|
the arguments. Returns a tuple containing (command, args, line).
|
|
'command' and 'args' may be None if the line couldn't be parsed.
|
|
"""
|
|
line = line.strip()
|
|
if not line:
|
|
return None, None, line
|
|
elif line[0] == '?':
|
|
line = 'help ' + line[1:]
|
|
elif line[0] == '!':
|
|
if hasattr(self, 'do_shell'):
|
|
line = 'shell ' + line[1:]
|
|
else:
|
|
return None, None, line
|
|
i, n = 0, len(line)
|
|
while i < n and line[i] in self.identchars: i = i+1
|
|
cmd, arg = line[:i], line[i:].strip()
|
|
return cmd, arg, line
|
|
|
|
def onecmd(self, line):
|
|
"""Interpret the argument as though it had been typed in response
|
|
to the prompt.
|
|
|
|
This may be overridden, but should not normally need to be;
|
|
see the precmd() and postcmd() methods for useful execution hooks.
|
|
The return value is a flag indicating whether interpretation of
|
|
commands by the interpreter should stop.
|
|
|
|
"""
|
|
line = str(line)
|
|
print("LINE 0: %s" % line)
|
|
cmd, arg, line = self.parseline(line)
|
|
print("LINE 1: %s" % line)
|
|
if cmd is None:
|
|
return self.default(line)
|
|
self.lastcmd = line
|
|
if line == 'EOF' :
|
|
self.lastcmd = ''
|
|
if cmd == '':
|
|
return self.default(line)
|
|
else:
|
|
func = getattr(self, 'do_' + cmd, None)
|
|
if func:
|
|
return func(arg)
|
|
else:
|
|
return self.default(line)
|
|
|
|
def runit(self):
|
|
|
|
print("DIR: %s" % dir())
|
|
print("ARGV: %s" % sys.argv)
|
|
mainpyfile = sys.argv[1] # Get script filename
|
|
sys.path.append(os.path.dirname(mainpyfile))
|
|
self.savedArgv = sys.argv[1:]
|
|
print("SARGV: %s" % self.savedArgv)
|
|
print("MAIN: %s" % mainpyfile)
|
|
|
|
while True:
|
|
try:
|
|
# The script has to run in __main__ namespace (or imports from
|
|
# __main__ will break).
|
|
#
|
|
# So we clear up the __main__ and set several special variables
|
|
# (this gets rid of pdb's globals and cleans old variables on restarts).
|
|
|
|
#import __main__
|
|
#__main__.__dict__.clear()
|
|
#__main__.__dict__.update({"__name__" : "__main__",
|
|
# "__file__" : mainpyfile,
|
|
# "__builtins__": __builtins__,
|
|
# })
|
|
|
|
# When bdb sets tracing, a number of call and line events happens
|
|
# BEFORE debugger even reaches user's code (and the exact sequence of
|
|
# events depends on python version). So we take special measures to
|
|
# avoid stopping before we reach the main script (see user_line and
|
|
# user_call for details).
|
|
self._wait_for_mainpyfile = True
|
|
self.mainpyfile = self.canonic(mainpyfile)
|
|
self._user_requested_quit = False
|
|
with open(mainpyfile, "rb") as fp:
|
|
statement = "exec(compile(%r, %r, 'exec'))" % \
|
|
(fp.read(), self.mainpyfile)
|
|
self.run(statement)
|
|
|
|
if self._user_requested_quit:
|
|
break
|
|
print("The program finished")
|
|
except SystemExit:
|
|
# In most cases SystemExit does not warrant a post-mortem session.
|
|
print("The program exited via sys.exit(). Exit status:")
|
|
print(sys.exc_info()[1])
|
|
except:
|
|
traceback.print_exc()
|
|
print("Uncaught exception. Entering post mortem debugging")
|
|
print("Running 'cont' or 'step' will restart the program")
|
|
t = sys.exc_info()[2]
|
|
self.interaction(None, t)
|
|
print("Post mortem debugger finished. The " + mainpyfile +
|
|
" will be restarted")
|
|
|
|
def sigint_handler(self, signum, frame):
|
|
if self.allow_kbdint:
|
|
raise KeyboardInterrupt
|
|
self.message("\nProgram interrupted. (Use 'cont' to resume).")
|
|
self.set_step()
|
|
self.set_trace(frame)
|
|
# restore previous signal handler
|
|
signal.signal(signal.SIGINT, self._previous_sigint_handler)
|
|
|
|
def forget(self):
|
|
self.lineno = None
|
|
self.stack = []
|
|
self.curindex = 0
|
|
self.curframe = None
|
|
self.tb_lineno.clear()
|
|
|
|
def setup(self, f, tb):
|
|
self.forget()
|
|
self.stack, self.curindex = self.get_stack(f, tb)
|
|
while tb:
|
|
# when setting up post-mortem debugging with a traceback, save all
|
|
# the original line numbers to be displayed along the current line
|
|
# numbers (which can be different, e.g. due to finally clauses)
|
|
lineno = lasti2lineno(tb.tb_frame.f_code, tb.tb_lasti)
|
|
self.tb_lineno[tb.tb_frame] = lineno
|
|
tb = tb.tb_next
|
|
self.curframe = self.stack[self.curindex][0]
|
|
# The f_locals dictionary is updated from the actual frame
|
|
# locals whenever the .f_locals accessor is called, so we
|
|
# cache it here to ensure that modifications are not overwritten.
|
|
self.curframe_locals = self.curframe.f_locals
|
|
|
|
def user_call(self, frame, argument_list):
|
|
"""This method is called when there is the remote possibility
|
|
that we ever need to stop in this function."""
|
|
if self._wait_for_mainpyfile:
|
|
return
|
|
if self.stop_here(frame):
|
|
self.message('--Call--')
|
|
self.interaction(frame, None)
|
|
|
|
def user_line(self, frame):
|
|
"""This function is called when we stop or break at this line."""
|
|
if self._wait_for_mainpyfile:
|
|
if (self.mainpyfile != self.canonic(frame.f_code.co_filename)
|
|
or frame.f_lineno <= 0):
|
|
return
|
|
self._wait_for_mainpyfile = False
|
|
if self.bp_commands(frame):
|
|
self.interaction(frame, None)
|
|
|
|
def bp_commands(self, frame):
|
|
"""Call every command that was set for the current active breakpoint
|
|
(if there is one).
|
|
|
|
Returns True if the normal interaction function must be called,
|
|
False otherwise."""
|
|
# self.currentbp is set in bdb in Bdb.break_here if a breakpoint was hit
|
|
if getattr(self, "currentbp", False) and \
|
|
self.currentbp in self.commands:
|
|
currentbp = self.currentbp
|
|
self.currentbp = 0
|
|
lastcmd_back = self.lastcmd
|
|
self.setup(frame, None)
|
|
for line in self.commands[currentbp]:
|
|
self.onecmd(line)
|
|
self.lastcmd = lastcmd_back
|
|
if not self.commands_silent[currentbp]:
|
|
self.print_stack_entry(self.stack[self.curindex])
|
|
if self.commands_doprompt[currentbp]:
|
|
self._cmdloop()
|
|
self.forget()
|
|
return
|
|
return 1
|
|
|
|
def user_return(self, frame, return_value):
|
|
"""This function is called when a return trap is set here."""
|
|
if self._wait_for_mainpyfile:
|
|
return
|
|
frame.f_locals['__return__'] = return_value
|
|
self.message('--Return--')
|
|
self.interaction(frame, None)
|
|
|
|
def user_exception(self, frame, exc_info):
|
|
"""This function is called if an exception occurs,
|
|
but only if we are to stop at or just below this level."""
|
|
if self._wait_for_mainpyfile:
|
|
return
|
|
exc_type, exc_value, exc_traceback = exc_info
|
|
frame.f_locals['__exception__'] = exc_type, exc_value
|
|
|
|
# An 'Internal StopIteration' exception is an exception debug event
|
|
# issued by the interpreter when handling a subgenerator run with
|
|
# 'yield from' or a generator controled by a for loop. No exception has
|
|
# actually occurred in this case. The debugger uses this debug event to
|
|
# stop when the debuggee is returning from such generators.
|
|
prefix = 'Internal ' if (not exc_traceback
|
|
and exc_type is StopIteration) else ''
|
|
self.message('%s%s' % (prefix,
|
|
traceback.format_exception_only(exc_type, exc_value)[-1].strip()))
|
|
self.interaction(frame, exc_traceback)
|
|
|
|
# General interaction function
|
|
def _cmdloop(self):
|
|
while True:
|
|
try:
|
|
# keyboard interrupts allow for an easy way to cancel
|
|
# the current command, so allow them during interactive input
|
|
self.allow_kbdint = True
|
|
self.cmdloop()
|
|
self.allow_kbdint = False
|
|
break
|
|
except KeyboardInterrupt:
|
|
self.message('--KeyboardInterrupt--')
|
|
|
|
def interaction(self, frame, traceback):
|
|
if self.setup(frame, traceback):
|
|
# no interaction desired at this time (happens if .pdbrc contains
|
|
# a command like "continue")
|
|
self.forget()
|
|
return
|
|
self.print_stack_entry(self.stack[self.curindex])
|
|
self._cmdloop()
|
|
self.forget()
|
|
|
|
def displayhook(self, obj):
|
|
"""Custom displayhook for the exec in default(), which prevents
|
|
assignment of the _ variable in the builtins.
|
|
"""
|
|
# reproduce the behavior of the standard displayhook, not printing None
|
|
if obj is not None:
|
|
self.message(repr(obj))
|
|
|
|
def default(self, line):
|
|
if line[:1] == '!': line = line[1:]
|
|
locals = self.curframe_locals
|
|
globals = self.curframe.f_globals
|
|
try:
|
|
code = compile(line + '\n', '<stdin>', 'single')
|
|
save_stdout = sys.stdout
|
|
save_stdin = sys.stdin
|
|
save_displayhook = sys.displayhook
|
|
try:
|
|
sys.stdin = self.stdin
|
|
sys.stdout = self.stdout
|
|
sys.displayhook = self.displayhook
|
|
exec(code, globals, locals)
|
|
finally:
|
|
sys.stdout = save_stdout
|
|
sys.stdin = save_stdin
|
|
sys.displayhook = save_displayhook
|
|
except:
|
|
exc_info = sys.exc_info()[:2]
|
|
self.error(traceback.format_exception_only(*exc_info)[-1].strip())
|
|
|
|
def precmd(self, line):
|
|
"""Handle alias expansion and ';;' separator."""
|
|
line = str(line)
|
|
if not line.strip():
|
|
return line
|
|
args = line.split()
|
|
while args[0] in self.aliases:
|
|
line = self.aliases[args[0]]
|
|
ii = 1
|
|
for tmpArg in args[1:]:
|
|
line = line.replace("%" + str(ii), tmpArg)
|
|
ii += 1
|
|
line = line.replace("%*", ' '.join(args[1:]))
|
|
args = line.split()
|
|
# split into ';;' separated commands
|
|
# unless it's an alias command
|
|
if args[0] != 'alias':
|
|
marker = line.find(';;')
|
|
if marker >= 0:
|
|
# queue up everything after marker
|
|
next = line[marker+2:].lstrip()
|
|
self.cmdqueue.append(next)
|
|
line = line[:marker].rstrip()
|
|
return line
|
|
|
|
# interface abstraction functions
|
|
|
|
def message(self, msg):
|
|
print(msg)
|
|
pass
|
|
|
|
def error(self, msg):
|
|
#print('***'+ msg)
|
|
pass
|
|
|
|
# Generic completion functions. Individual complete_foo methods can be
|
|
# assigned below to one of these functions.
|
|
|
|
def _complete_expression(self, text, line, begidx, endidx):
|
|
# Complete an arbitrary expression.
|
|
if not self.curframe:
|
|
return []
|
|
# Collect globals and locals. It is usually not really sensible to also
|
|
# complete builtins, and they clutter the namespace quite heavily, so we
|
|
# leave them out.
|
|
ns = self.curframe.f_globals.copy()
|
|
ns.update(self.curframe_locals)
|
|
if '.' in text:
|
|
# Walk an attribute chain up to the last part, similar to what
|
|
# rlcompleter does. This will bail if any of the parts are not
|
|
# simple attribute access, which is what we want.
|
|
dotted = text.split('.')
|
|
try:
|
|
obj = ns[dotted[0]]
|
|
for part in dotted[1:-1]:
|
|
obj = getattr(obj, part)
|
|
except (KeyError, AttributeError):
|
|
return []
|
|
prefix = '.'.join(dotted[:-1]) + '.'
|
|
return [prefix + n for n in dir(obj) if n.startswith(dotted[-1])]
|
|
else:
|
|
# Complete a simple name.
|
|
return [n for n in ns.keys() if n.startswith(text)]
|
|
|
|
# Command definitions, called by cmdloop()
|
|
# The argument is the remaining string on the command line
|
|
# Return true to exit from the command loop
|
|
|
|
def do_commands(self, arg):
|
|
"""commands [bpnumber]
|
|
(com) ...
|
|
(com) end
|
|
(Pdb)
|
|
|
|
Specify a list of commands for breakpoint number bpnumber.
|
|
The commands themselves are entered on the following lines.
|
|
Type a line containing just 'end' to terminate the commands.
|
|
The commands are executed when the breakpoint is hit.
|
|
|
|
To remove all commands from a breakpoint, type commands and
|
|
follow it immediately with end; that is, give no commands.
|
|
|
|
With no bpnumber argument, commands refers to the last
|
|
breakpoint set.
|
|
|
|
You can use breakpoint commands to start your program up
|
|
again. Simply use the continue command, or step, or any other
|
|
command that resumes execution.
|
|
|
|
Specifying any command resuming execution (currently continue,
|
|
step, next, return, jump, quit and their abbreviations)
|
|
terminates the command list (as if that command was
|
|
immediately followed by end). This is because any time you
|
|
resume execution (even with a simple next or step), you may
|
|
encounter another breakpoint -- which could have its own
|
|
command list, leading to ambiguities about which list to
|
|
execute.
|
|
|
|
If you use the 'silent' command in the command list, the usual
|
|
message about stopping at a breakpoint is not printed. This
|
|
may be desirable for breakpoints that are to print a specific
|
|
message and then continue. If none of the other commands
|
|
print anything, you will see no sign that the breakpoint was
|
|
reached.
|
|
"""
|
|
if not arg:
|
|
bnum = len(Breakpoint.bpbynumber) - 1
|
|
else:
|
|
try:
|
|
bnum = int(arg)
|
|
except:
|
|
self.error("Usage: commands [bnum]\n ...\n end")
|
|
return
|
|
self.commands_bnum = bnum
|
|
# Save old definitions for the case of a keyboard interrupt.
|
|
if bnum in self.commands:
|
|
old_command_defs = (self.commands[bnum],
|
|
self.commands_doprompt[bnum],
|
|
self.commands_silent[bnum])
|
|
else:
|
|
old_command_defs = None
|
|
self.commands[bnum] = []
|
|
self.commands_doprompt[bnum] = True
|
|
self.commands_silent[bnum] = False
|
|
|
|
prompt_back = self.prompt
|
|
self.prompt = '(com) '
|
|
try:
|
|
self.cmdloop()
|
|
except KeyboardInterrupt:
|
|
# Restore old definitions.
|
|
if old_command_defs:
|
|
self.commands[bnum] = old_command_defs[0]
|
|
self.commands_doprompt[bnum] = old_command_defs[1]
|
|
self.commands_silent[bnum] = old_command_defs[2]
|
|
else:
|
|
del self.commands[bnum]
|
|
del self.commands_doprompt[bnum]
|
|
del self.commands_silent[bnum]
|
|
self.error('command definition aborted, old commands restored')
|
|
finally:
|
|
self.prompt = prompt_back
|
|
|
|
def do_break(self, arg, temporary = 0):
|
|
"""b(reak) [ ([filename:]lineno | function) [, condition] ]
|
|
Without argument, list all breaks.
|
|
|
|
With a line number argument, set a break at this line in the
|
|
current file. With a function name, set a break at the first
|
|
executable line of that function. If a second argument is
|
|
present, it is a string specifying an expression which must
|
|
evaluate to true before the breakpoint is honored.
|
|
|
|
The line number may be prefixed with a filename and a colon,
|
|
to specify a breakpoint in another file (probably one that
|
|
hasn't been loaded yet). The file is searched for on
|
|
sys.path; the .py suffix may be omitted.
|
|
"""
|
|
if not arg:
|
|
if self.breaks: # There's at least one
|
|
self.message("Num Type Disp Enb Where")
|
|
for bp in Breakpoint.bpbynumber:
|
|
if bp:
|
|
self.message(bp.bpformat())
|
|
return
|
|
# parse arguments; comma has lowest precedence
|
|
# and cannot occur in filename
|
|
filename = None
|
|
lineno = None
|
|
cond = None
|
|
comma = arg.find(',')
|
|
if comma > 0:
|
|
# parse stuff after comma: "condition"
|
|
cond = arg[comma+1:].lstrip()
|
|
arg = arg[:comma].rstrip()
|
|
# parse stuff before comma: [filename:]lineno | function
|
|
colon = arg.rfind(':')
|
|
funcname = None
|
|
if colon >= 0:
|
|
filename = arg[:colon].rstrip()
|
|
f = self.lookupmodule(filename)
|
|
if not f:
|
|
self.error('%r not found from sys.path' % filename)
|
|
return
|
|
else:
|
|
filename = f
|
|
arg = arg[colon+1:].lstrip()
|
|
try:
|
|
lineno = int(arg)
|
|
except ValueError:
|
|
self.error('Bad lineno: %s' % arg)
|
|
return
|
|
else:
|
|
# no colon; can be lineno or function
|
|
try:
|
|
lineno = int(arg)
|
|
except ValueError:
|
|
try:
|
|
func = eval(arg,
|
|
self.curframe.f_globals,
|
|
self.curframe_locals)
|
|
except:
|
|
func = arg
|
|
try:
|
|
if hasattr(func, '__func__'):
|
|
func = func.__func__
|
|
code = func.__code__
|
|
#use co_name to identify the bkpt (function names
|
|
#could be aliased, but co_name is invariant)
|
|
funcname = code.co_name
|
|
lineno = code.co_firstlineno
|
|
filename = code.co_filename
|
|
except:
|
|
# last thing to try
|
|
(ok, filename, ln) = self.lineinfo(arg)
|
|
if not ok:
|
|
self.error('The specified object %r is not a function '
|
|
'or was not found along sys.path.' % arg)
|
|
return
|
|
funcname = ok # ok contains a function name
|
|
lineno = int(ln)
|
|
if not filename:
|
|
filename = self.defaultFile()
|
|
# Check for reasonable breakpoint
|
|
line = self.checkline(filename, lineno)
|
|
if line:
|
|
# now set the break point
|
|
err = self.set_break(filename, line, temporary, cond, funcname)
|
|
if err:
|
|
self.error(err)
|
|
else:
|
|
bp = self.get_breaks(filename, line)[-1]
|
|
self.message("Breakpoint %d at %s:%d" %
|
|
(bp.number, bp.file, bp.line))
|
|
|
|
# To be overridden in derived debuggers
|
|
def defaultFile(self):
|
|
"""Produce a reasonable default."""
|
|
filename = self.curframe.f_code.co_filename
|
|
if filename == '<string>' and self.mainpyfile:
|
|
filename = self.mainpyfile
|
|
return filename
|
|
|
|
def do_tbreak(self, arg):
|
|
"""tbreak [ ([filename:]lineno | function) [, condition] ]
|
|
Same arguments as break, but sets a temporary breakpoint: it
|
|
is automatically deleted when first hit.
|
|
"""
|
|
self.do_break(arg, 1)
|
|
|
|
def lineinfo(self, identifier):
|
|
failed = (None, None, None)
|
|
# Input is identifier, may be in single quotes
|
|
idstring = identifier.split("'")
|
|
if len(idstring) == 1:
|
|
# not in single quotes
|
|
id = idstring[0].strip()
|
|
elif len(idstring) == 3:
|
|
# quoted
|
|
id = idstring[1].strip()
|
|
else:
|
|
return failed
|
|
if id == '': return failed
|
|
parts = id.split('.')
|
|
# Protection for derived debuggers
|
|
if parts[0] == 'self':
|
|
del parts[0]
|
|
if len(parts) == 0:
|
|
return failed
|
|
# Best first guess at file to look at
|
|
fname = self.defaultFile()
|
|
if len(parts) == 1:
|
|
item = parts[0]
|
|
else:
|
|
# More than one part.
|
|
# First is module, second is method/class
|
|
f = self.lookupmodule(parts[0])
|
|
if f:
|
|
fname = f
|
|
item = parts[1]
|
|
answer = find_function(item, fname)
|
|
return answer or failed
|
|
|
|
def checkline(self, filename, lineno):
|
|
"""Check whether specified line seems to be executable.
|
|
|
|
Return `lineno` if it is, 0 if not (e.g. a docstring, comment, blank
|
|
line or EOF). Warning: testing is not comprehensive.
|
|
"""
|
|
# this method should be callable before starting debugging, so default
|
|
# to "no globals" if there is no current frame
|
|
globs = self.curframe.f_globals if hasattr(self, 'curframe') else None
|
|
line = linecache.getline(filename, lineno, globs)
|
|
if not line:
|
|
self.message('End of file')
|
|
return 0
|
|
line = line.strip()
|
|
# Don't allow setting breakpoint at a blank line
|
|
if (not line or (line[0] == '#') or
|
|
(line[:3] == '"""') or line[:3] == "'''"):
|
|
self.error('Blank or comment')
|
|
return 0
|
|
return lineno
|
|
|
|
def do_enable(self, arg):
|
|
"""enable bpnumber [bpnumber ...]
|
|
Enables the breakpoints given as a space separated list of
|
|
breakpoint numbers.
|
|
"""
|
|
args = arg.split()
|
|
for i in args:
|
|
try:
|
|
bp = self.get_bpbynumber(i)
|
|
except ValueError as err:
|
|
self.error(err)
|
|
else:
|
|
bp.enable()
|
|
self.message('Enabled %s' % bp)
|
|
|
|
def do_disable(self, arg):
|
|
"""disable bpnumber [bpnumber ...]
|
|
Disables the breakpoints given as a space separated list of
|
|
breakpoint numbers. Disabling a breakpoint means it cannot
|
|
cause the program to stop execution, but unlike clearing a
|
|
breakpoint, it remains in the list of breakpoints and can be
|
|
(re-)enabled.
|
|
"""
|
|
args = arg.split()
|
|
for i in args:
|
|
try:
|
|
bp = self.get_bpbynumber(i)
|
|
except ValueError as err:
|
|
self.error(err)
|
|
else:
|
|
bp.disable()
|
|
self.message('Disabled %s' % bp)
|
|
|
|
def do_condition(self, arg):
|
|
"""condition bpnumber [condition]
|
|
Set a new condition for the breakpoint, an expression which
|
|
must evaluate to true before the breakpoint is honored. If
|
|
condition is absent, any existing condition is removed; i.e.,
|
|
the breakpoint is made unconditional.
|
|
"""
|
|
args = arg.split(' ', 1)
|
|
try:
|
|
cond = args[1]
|
|
except IndexError:
|
|
cond = None
|
|
try:
|
|
bp = self.get_bpbynumber(args[0].strip())
|
|
except IndexError:
|
|
self.error('Breakpoint number expected')
|
|
except ValueError as err:
|
|
self.error(err)
|
|
else:
|
|
bp.cond = cond
|
|
if not cond:
|
|
self.message('Breakpoint %d is now unconditional.' % bp.number)
|
|
else:
|
|
self.message('New condition set for breakpoint %d.' % bp.number)
|
|
|
|
def do_ignore(self, arg):
|
|
"""ignore bpnumber [count]
|
|
Set the ignore count for the given breakpoint number. If
|
|
count is omitted, the ignore count is set to 0. A breakpoint
|
|
becomes active when the ignore count is zero. When non-zero,
|
|
the count is decremented each time the breakpoint is reached
|
|
and the breakpoint is not disabled and any associated
|
|
condition evaluates to true.
|
|
"""
|
|
args = arg.split()
|
|
try:
|
|
count = int(args[1].strip())
|
|
except:
|
|
count = 0
|
|
try:
|
|
bp = self.get_bpbynumber(args[0].strip())
|
|
except IndexError:
|
|
self.error('Breakpoint number expected')
|
|
except ValueError as err:
|
|
self.error(err)
|
|
else:
|
|
bp.ignore = count
|
|
if count > 0:
|
|
if count > 1:
|
|
countstr = '%d crossings' % count
|
|
else:
|
|
countstr = '1 crossing'
|
|
self.message('Will ignore next %s of breakpoint %d.' %
|
|
(countstr, bp.number))
|
|
else:
|
|
self.message('Will stop next time breakpoint %d is reached.'
|
|
% bp.number)
|
|
|
|
def do_clear(self, arg):
|
|
"""cl(ear) filename:lineno\ncl(ear) [bpnumber [bpnumber...]]
|
|
With a space separated list of breakpoint numbers, clear
|
|
those breakpoints. Without argument, clear all breaks (but
|
|
first ask confirmation). With a filename:lineno argument,
|
|
clear all breaks at that line in that file.
|
|
"""
|
|
if not arg:
|
|
try:
|
|
reply = input('Clear all breaks? ')
|
|
except EOFError:
|
|
reply = 'no'
|
|
reply = reply.strip().lower()
|
|
if reply in ('y', 'yes'):
|
|
bplist = [bp for bp in Breakpoint.bpbynumber if bp]
|
|
self.clear_all_breaks()
|
|
for bp in bplist:
|
|
self.message('Deleted %s' % bp)
|
|
return
|
|
if ':' in arg:
|
|
# Make sure it works for "clear C:\foo\bar.py:12"
|
|
i = arg.rfind(':')
|
|
filename = arg[:i]
|
|
arg = arg[i+1:]
|
|
try:
|
|
lineno = int(arg)
|
|
except ValueError:
|
|
err = "Invalid line number (%s)" % arg
|
|
else:
|
|
bplist = self.get_breaks(filename, lineno)
|
|
err = self.clear_break(filename, lineno)
|
|
if err:
|
|
self.error(err)
|
|
else:
|
|
for bp in bplist:
|
|
self.message('Deleted %s' % bp)
|
|
return
|
|
numberlist = arg.split()
|
|
for i in numberlist:
|
|
try:
|
|
bp = self.get_bpbynumber(i)
|
|
except ValueError as err:
|
|
self.error(err)
|
|
else:
|
|
self.clear_bpbynumber(i)
|
|
self.message('Deleted %s' % bp)
|
|
|
|
def _select_frame(self, number):
|
|
assert 0 <= number < len(self.stack)
|
|
self.curindex = number
|
|
self.curframe = self.stack[self.curindex][0]
|
|
self.curframe_locals = self.curframe.f_locals
|
|
self.print_stack_entry(self.stack[self.curindex])
|
|
self.lineno = None
|
|
|
|
def do_up(self, arg):
|
|
"""u(p) [count]
|
|
Move the current frame count (default one) levels up in the
|
|
stack trace (to an older frame).
|
|
"""
|
|
if self.curindex == 0:
|
|
self.error('Oldest frame')
|
|
return
|
|
try:
|
|
count = int(arg or 1)
|
|
except ValueError:
|
|
self.error('Invalid frame count (%s)' % arg)
|
|
return
|
|
if count < 0:
|
|
newframe = 0
|
|
else:
|
|
newframe = max(0, self.curindex - count)
|
|
self._select_frame(newframe)
|
|
|
|
def do_down(self, arg):
|
|
"""d(own) [count]
|
|
Move the current frame count (default one) levels down in the
|
|
stack trace (to a newer frame).
|
|
"""
|
|
if self.curindex + 1 == len(self.stack):
|
|
self.error('Newest frame')
|
|
return
|
|
try:
|
|
count = int(arg or 1)
|
|
except ValueError:
|
|
self.error('Invalid frame count (%s)' % arg)
|
|
return
|
|
if count < 0:
|
|
newframe = len(self.stack) - 1
|
|
else:
|
|
newframe = min(len(self.stack) - 1, self.curindex + count)
|
|
self._select_frame(newframe)
|
|
|
|
def do_until(self, arg):
|
|
"""unt(il) [lineno]
|
|
Without argument, continue execution until the line with a
|
|
number greater than the current one is reached. With a line
|
|
number, continue execution until a line with a number greater
|
|
or equal to that is reached. In both cases, also stop when
|
|
the current frame returns.
|
|
"""
|
|
if arg:
|
|
try:
|
|
lineno = int(arg)
|
|
except ValueError:
|
|
self.error('Error in argument: %r' % arg)
|
|
return
|
|
if lineno <= self.curframe.f_lineno:
|
|
self.error('"until" line number is smaller than current '
|
|
'line number')
|
|
return
|
|
else:
|
|
lineno = None
|
|
self.set_until(self.curframe, lineno)
|
|
return 1
|
|
|
|
def do_step(self, arg):
|
|
"""s(tep)
|
|
Execute the current line, stop at the first possible occasion
|
|
(either in a function that is called or in the current
|
|
function).
|
|
"""
|
|
self.set_step()
|
|
return 1
|
|
|
|
def do_next(self, arg):
|
|
"""n(ext)
|
|
Continue execution until the next line in the current function
|
|
is reached or it returns.
|
|
"""
|
|
self.set_next(self.curframe)
|
|
return 1
|
|
|
|
def do_return(self, arg):
|
|
"""r(eturn)
|
|
Continue execution until the current function returns.
|
|
"""
|
|
self.set_return(self.curframe)
|
|
return 1
|
|
|
|
def do_continue(self, arg):
|
|
"""c(ont(inue))
|
|
Continue execution, only stop when a breakpoint is encountered.
|
|
"""
|
|
if not self.nosigint:
|
|
try:
|
|
self._previous_sigint_handler = \
|
|
signal.signal(signal.SIGINT, self.sigint_handler)
|
|
except ValueError:
|
|
# ValueError happens when do_continue() is invoked from
|
|
# a non-main thread in which case we just continue without
|
|
# SIGINT set. Would printing a message here (once) make
|
|
# sense?
|
|
pass
|
|
self.set_continue()
|
|
return 1
|
|
|
|
def do_jump(self, arg):
|
|
"""j(ump) lineno
|
|
Set the next line that will be executed. Only available in
|
|
the bottom-most frame. This lets you jump back and execute
|
|
code again, or jump forward to skip code that you don't want
|
|
to run.
|
|
|
|
It should be noted that not all jumps are allowed -- for
|
|
instance it is not possible to jump into the middle of a
|
|
for loop or out of a finally clause.
|
|
"""
|
|
if self.curindex + 1 != len(self.stack):
|
|
self.error('You can only jump within the bottom frame')
|
|
return
|
|
try:
|
|
arg = int(arg)
|
|
except ValueError:
|
|
self.error("The 'jump' command requires a line number")
|
|
else:
|
|
try:
|
|
# Do the jump, fix up our copy of the stack, and display the
|
|
# new position
|
|
self.curframe.f_lineno = arg
|
|
self.stack[self.curindex] = self.stack[self.curindex][0], arg
|
|
self.print_stack_entry(self.stack[self.curindex])
|
|
except ValueError as e:
|
|
self.error('Jump failed: %s' % e)
|
|
|
|
def do_debug(self, arg):
|
|
"""debug code
|
|
Enter a recursive debugger that steps through the code
|
|
argument (which is an arbitrary expression or statement to be
|
|
executed in the current environment).
|
|
"""
|
|
sys.settrace(None)
|
|
globals = self.curframe.f_globals
|
|
locals = self.curframe_locals
|
|
p = Dumper(self.stdin, self.stdout)
|
|
p.prompt = "(%s) " % self.prompt.strip()
|
|
self.message("ENTERING RECURSIVE DEBUGGER")
|
|
sys.call_tracing(p.run, (arg, globals, locals))
|
|
self.message("LEAVING RECURSIVE DEBUGGER")
|
|
sys.settrace(self.trace_dispatch)
|
|
self.lastcmd = p.lastcmd
|
|
|
|
def do_quit(self, arg):
|
|
"""q(uit)\nexit
|
|
Quit from the debugger. The program being executed is aborted.
|
|
"""
|
|
self._user_requested_quit = True
|
|
self.set_quit()
|
|
return 1
|
|
|
|
def do_EOF(self, arg):
|
|
"""EOF
|
|
Handles the receipt of EOF as a command.
|
|
"""
|
|
self.message('')
|
|
self._user_requested_quit = True
|
|
self.set_quit()
|
|
return 1
|
|
|
|
def do_args(self, arg):
|
|
"""a(rgs)
|
|
Print the argument list of the current function.
|
|
"""
|
|
co = self.curframe.f_code
|
|
dict = self.curframe_locals
|
|
n = co.co_argcount
|
|
if co.co_flags & 4: n = n+1
|
|
if co.co_flags & 8: n = n+1
|
|
for i in range(n):
|
|
name = co.co_varnames[i]
|
|
if name in dict:
|
|
self.message('%s = %r' % (name, dict[name]))
|
|
else:
|
|
self.message('%s = *** undefined ***' % (name,))
|
|
|
|
def do_retval(self, arg):
|
|
"""retval
|
|
Print the return value for the last return of a function.
|
|
"""
|
|
if '__return__' in self.curframe_locals:
|
|
self.message(repr(self.curframe_locals['__return__']))
|
|
else:
|
|
self.error('Not yet returned!')
|
|
|
|
def _getval(self, arg):
|
|
try:
|
|
return eval(arg, self.curframe.f_globals, self.curframe_locals)
|
|
except:
|
|
exc_info = sys.exc_info()[:2]
|
|
self.error(traceback.format_exception_only(*exc_info)[-1].strip())
|
|
raise
|
|
|
|
def _getval_except(self, arg, frame=None):
|
|
try:
|
|
if frame is None:
|
|
return eval(arg, self.curframe.f_globals, self.curframe_locals)
|
|
else:
|
|
return eval(arg, frame.f_globals, frame.f_locals)
|
|
except:
|
|
exc_info = sys.exc_info()[:2]
|
|
err = traceback.format_exception_only(*exc_info)[-1].strip()
|
|
return _rstr('** raised %s **' % err)
|
|
|
|
def do_source(self, arg):
|
|
"""source expression
|
|
Try to get source code for the given object and display it.
|
|
"""
|
|
try:
|
|
obj = self._getval(arg)
|
|
except:
|
|
return
|
|
try:
|
|
lines, lineno = getsourcelines(obj)
|
|
except (OSError, TypeError) as err:
|
|
self.error(err)
|
|
return
|
|
self._print_lines(lines, lineno)
|
|
|
|
def _print_lines(self, lines, start, breaks=(), frame=None):
|
|
"""Print a range of lines."""
|
|
if frame:
|
|
current_lineno = frame.f_lineno
|
|
exc_lineno = self.tb_lineno.get(frame, -1)
|
|
else:
|
|
current_lineno = exc_lineno = -1
|
|
for lineno, line in enumerate(lines, start):
|
|
s = str(lineno).rjust(3)
|
|
if len(s) < 4:
|
|
s += ' '
|
|
if lineno in breaks:
|
|
s += 'B'
|
|
else:
|
|
s += ' '
|
|
if lineno == current_lineno:
|
|
s += '->'
|
|
elif lineno == exc_lineno:
|
|
s += '>>'
|
|
self.message(s + '\t' + line.rstrip())
|
|
|
|
def do_whatis(self, arg):
|
|
"""whatis arg
|
|
Print the type of the argument.
|
|
"""
|
|
try:
|
|
value = self._getval(arg)
|
|
except:
|
|
# _getval() already printed the error
|
|
return
|
|
code = None
|
|
# Is it a function?
|
|
try:
|
|
code = value.__code__
|
|
except Exception:
|
|
pass
|
|
if code:
|
|
self.message('Function %s' % code.co_name)
|
|
return
|
|
# Is it an instance method?
|
|
try:
|
|
code = value.__func__.__code__
|
|
except Exception:
|
|
pass
|
|
if code:
|
|
self.message('Method %s' % code.co_name)
|
|
return
|
|
# Is it a class?
|
|
if value.__class__ is type:
|
|
self.message('Class %s.%s' % (value.__module__, value.__name__))
|
|
return
|
|
# None of the above...
|
|
self.message(type(value))
|
|
|
|
def do_display(self, arg):
|
|
"""display [expression]
|
|
|
|
Display the value of the expression if it changed, each time execution
|
|
stops in the current frame.
|
|
|
|
Without expression, list all display expressions for the current frame.
|
|
"""
|
|
if not arg:
|
|
self.message('Currently displaying:')
|
|
for item in self.displaying.get(self.curframe, {}).items():
|
|
self.message('%s: %r' % item)
|
|
else:
|
|
val = self._getval_except(arg)
|
|
self.displaying.setdefault(self.curframe, {})[arg] = val
|
|
self.message('display %s: %r' % (arg, val))
|
|
|
|
def do_undisplay(self, arg):
|
|
"""undisplay [expression]
|
|
|
|
Do not display the expression any more in the current frame.
|
|
|
|
Without expression, clear all display expressions for the current frame.
|
|
"""
|
|
if arg:
|
|
try:
|
|
del self.displaying.get(self.curframe, {})[arg]
|
|
except KeyError:
|
|
self.error('not displaying %s' % arg)
|
|
else:
|
|
self.displaying.pop(self.curframe, None)
|
|
|
|
def complete_undisplay(self, text, line, begidx, endidx):
|
|
return [e for e in self.displaying.get(self.curframe, {})
|
|
if e.startswith(text)]
|
|
|
|
def do_interact(self, arg):
|
|
"""interact
|
|
|
|
Start an interactive interpreter whose global namespace
|
|
contains all the (global and local) names found in the current scope.
|
|
"""
|
|
ns = self.curframe.f_globals.copy()
|
|
ns.update(self.curframe_locals)
|
|
code.interact("*interactive*", local=ns)
|
|
|
|
# List of all the commands making the program resume execution.
|
|
commands_resuming = ['do_continue', 'do_step', 'do_next', 'do_return',
|
|
'do_quit', 'do_jump']
|
|
|
|
def print_stack_entry(self, frame_lineno):
|
|
frame, lineno = frame_lineno
|
|
if frame is self.curframe:
|
|
prefix = '> '
|
|
else:
|
|
prefix = ' '
|
|
prompt_prefix = '\n-> '
|
|
self.message(prefix + self.format_stack_entry(frame_lineno, prompt_prefix))
|
|
|
|
# other helper functions
|
|
|
|
def lookupmodule(self, filename):
|
|
"""Helper function for break/clear parsing -- may be overridden.
|
|
|
|
lookupmodule() translates (possibly incomplete) file or module name
|
|
into an absolute file name.
|
|
"""
|
|
if os.path.isabs(filename) and os.path.exists(filename):
|
|
return filename
|
|
f = os.path.join(sys.path[0], filename)
|
|
if os.path.exists(f) and self.canonic(f) == self.mainpyfile:
|
|
return f
|
|
root, ext = os.path.splitext(filename)
|
|
if ext == '':
|
|
filename = filename + '.py'
|
|
if os.path.isabs(filename):
|
|
return filename
|
|
for dirname in sys.path:
|
|
while os.path.islink(dirname):
|
|
dirname = os.readlink(dirname)
|
|
fullname = os.path.join(dirname, filename)
|
|
if os.path.exists(fullname):
|
|
return fullname
|
|
return None
|
|
|
|
def evaluateTooltip(self, args):
|
|
self.updateData(args)
|
|
|
|
def updateData(self, args):
|
|
self.expandedINames = set(args.get("expanded", []))
|
|
self.typeformats = args.get("typeformats", {})
|
|
self.formats = args.get("formats", {})
|
|
self.watchers = args.get("watchers", {})
|
|
self.output = ""
|
|
|
|
frameNr = args.get("frame", 0)
|
|
if frameNr == -1:
|
|
frameNr = 0
|
|
|
|
frame_lineno = self.stack[-1-frameNr]
|
|
frame, lineno = frame_lineno
|
|
filename = self.canonic(frame.f_code.co_filename)
|
|
|
|
self.output += "data={"
|
|
for var in frame.f_locals.keys():
|
|
if var in ("__file__", "__name__", "__package__", "__spec__",
|
|
"__doc__", "__loader__", "__cached__", "__the_dumper__"):
|
|
continue
|
|
value = frame.f_locals[var]
|
|
self.dumpValue(value, var, "local.%s" % var)
|
|
self.output += '}'
|
|
self.output += '{frame="%s"}' % frameNr
|
|
self.flushOutput()
|
|
|
|
def flushOutput(self):
|
|
sys.stdout.write(self.output)
|
|
self.output = ""
|
|
|
|
def put(self, value):
|
|
#sys.stdout.write(value)
|
|
self.output += value
|
|
|
|
def putField(self, name, value):
|
|
self.put('%s="%s",' % (name, value))
|
|
|
|
def putItemCount(self, count):
|
|
self.put('value="<%s items>",numchild="%s",' % (count, count))
|
|
|
|
def cleanType(self, type):
|
|
t = str(type)
|
|
if t.startswith("<type '") and t.endswith("'>"):
|
|
t = t[7:-2]
|
|
if t.startswith("<class '") and t.endswith("'>"):
|
|
t = t[8:-2]
|
|
return t
|
|
|
|
def putType(self, type, priority = 0):
|
|
self.putField("type", self.cleanType(type))
|
|
|
|
def putNumChild(self, numchild):
|
|
self.put('numchild="%s",' % numchild)
|
|
|
|
def putValue(self, value, encoding = None, priority = 0):
|
|
self.putField("value", value)
|
|
|
|
def putName(self, name):
|
|
self.put('name="%s",' % name)
|
|
|
|
def isExpanded(self, iname):
|
|
#self.warn("IS EXPANDED: %s in %s" % (iname, self.expandedINames))
|
|
if iname.startswith("None"):
|
|
raise "Illegal iname '%s'" % iname
|
|
#self.warn(" --> %s" % (iname in self.expandedINames))
|
|
return iname in self.expandedINames
|
|
|
|
def isExpandedIName(self, iname):
|
|
return iname in self.expandedINames
|
|
|
|
def itemFormat(self, item):
|
|
format = self.formats.get(str(cleanAddress(item.value.address)))
|
|
if format is None:
|
|
format = self.typeformats.get(self.stripClassTag(str(item.value.type)))
|
|
return format
|
|
|
|
# Hex encoding operating on str or bytes, return str.
|
|
def hexencode(self, s):
|
|
if sys.version_info[0] == 2:
|
|
return s.encode("hex")
|
|
if isinstance(s, str):
|
|
s = s.encode("utf8")
|
|
return base64.b16encode(s).decode("utf8")
|
|
|
|
def dumpValue(self, value, name, iname):
|
|
t = type(value)
|
|
tt = self.cleanType(t)
|
|
if tt == "module" or tt == "function":
|
|
return
|
|
if str(value).startswith("<class '"):
|
|
return
|
|
# FIXME: Should we?
|
|
if str(value).startswith("<enum-item "):
|
|
return
|
|
self.put("{")
|
|
self.putField("iname", iname)
|
|
self.putName(name)
|
|
self.putType(tt)
|
|
if tt == "NoneType":
|
|
self.putValue("None")
|
|
self.putNumChild(0)
|
|
elif tt == "list" or tt == "tuple":
|
|
self.putItemCount(len(value))
|
|
#self.putValue(value)
|
|
self.put("children=[")
|
|
for i in range(len(value)):
|
|
self.dumpValue(value[i], str(i), "%s.%d" % (iname, i))
|
|
self.put("]")
|
|
elif tt == "str":
|
|
v = value
|
|
self.putValue(self.hexencode(v))
|
|
self.putField("valueencoded", 6)
|
|
self.putNumChild(0)
|
|
elif tt == "unicode":
|
|
v = value
|
|
self.putValue(self.hexencode(v))
|
|
self.putField("valueencoded", 6)
|
|
self.putNumChild(0)
|
|
elif tt == "buffer":
|
|
v = str(value)
|
|
self.putValue(self.hexencode(v))
|
|
self.putField("valueencoded", 6)
|
|
self.putNumChild(0)
|
|
elif tt == "xrange":
|
|
b = iter(value).next()
|
|
e = b + len(value)
|
|
self.putValue("(%d, %d)" % (b, e))
|
|
self.putNumChild(0)
|
|
elif tt == "dict":
|
|
self.putItemCount(len(value))
|
|
self.putField("childnumchild", 2)
|
|
self.put("children=[")
|
|
i = 0
|
|
if sys.version_info[0] >= 3:
|
|
vals = value.items()
|
|
else:
|
|
vals = value.iteritems()
|
|
for (k, v) in vals:
|
|
self.put("{")
|
|
self.putType(" ")
|
|
self.putValue("%s: %s" % (k, v))
|
|
if self.isExpanded(iname):
|
|
self.put("children=[")
|
|
self.dumpValue(k, "key", "%s.%d.k" % (iname, i))
|
|
self.dumpValue(v, "value", "%s.%d.v" % (iname, i))
|
|
self.put("]")
|
|
self.put("},")
|
|
i += 1
|
|
self.put("]")
|
|
elif tt == "class":
|
|
pass
|
|
elif tt == "module":
|
|
pass
|
|
elif tt == "function":
|
|
pass
|
|
elif str(value).startswith("<enum-item "):
|
|
# FIXME: Having enums always shown like this is not nice.
|
|
self.putValue(str(value)[11:-1])
|
|
self.putNumChild(0)
|
|
else:
|
|
v = str(value)
|
|
p = v.find(" object at ")
|
|
if p > 1:
|
|
v = "@" + v[p + 11:-1]
|
|
self.putValue(v)
|
|
if self.isExpanded(iname):
|
|
self.put("children=[")
|
|
for child in dir(value):
|
|
if child == "__dict__":
|
|
continue
|
|
if child == "__doc__":
|
|
continue
|
|
if child == "__module__":
|
|
continue
|
|
attr = getattr(value, child)
|
|
if callable(attr):
|
|
continue
|
|
try:
|
|
self.dumpValue(attr, child, "%s.%s" % (iname, child))
|
|
except:
|
|
pass
|
|
self.put("],")
|
|
self.put("},")
|
|
|
|
|
|
def warn(self, msg):
|
|
self.putField("warning", msg)
|
|
|
|
def listModules(self, args):
|
|
self.put("modules=[");
|
|
for name in sys.modules:
|
|
self.put("{")
|
|
self.putName(name)
|
|
self.putValue(sys.modules[name])
|
|
self.put("},")
|
|
self.put("]")
|
|
self.flushOutput()
|
|
|
|
def listSymbols(self, args):
|
|
moduleName = args['module']
|
|
module = sys.modules.get(moduleName, None)
|
|
self.put("symbols={module='%s',symbols='%s'}"
|
|
% (module, dir(module) if module else []))
|
|
self.flushOutput()
|
|
|
|
def assignValue(self, args):
|
|
exp = args['expression']
|
|
value = args['value']
|
|
cmd = "%s=%s" % (exp, exp, value)
|
|
eval(cmd, {})
|
|
self.put("CMD: '%s'" % cmd)
|
|
self.flushOutput()
|
|
|
|
def stackListFrames(self, args):
|
|
#result = 'stack={current-thread="%s"' % thread.GetThreadID()
|
|
result = 'stack={current-thread="%s"' % 1
|
|
|
|
result += ',frames=['
|
|
try:
|
|
level = 0
|
|
frames = list(reversed(self.stack))
|
|
frames = frames[:-2] # Drop "pdbbridge" and "<string>" levels
|
|
for frame_lineno in frames:
|
|
frame, lineno = frame_lineno
|
|
filename = self.canonic(frame.f_code.co_filename)
|
|
level += 1
|
|
result += '{'
|
|
result += 'file="%s",' % filename
|
|
result += 'line="%s",' % lineno
|
|
result += 'level="%s",' % level
|
|
result += '}'
|
|
except KeyboardInterrupt:
|
|
pass
|
|
result += ']'
|
|
|
|
#result += ',hasmore="%d"' % isLimited
|
|
#result += ',limit="%d"' % limit
|
|
result += '}'
|
|
self.report(result)
|
|
|
|
def report(self, stuff):
|
|
sys.stdout.write("@\n" + stuff + "@\n")
|
|
sys.stdout.flush()
|
|
|
|
|
|
def qdebug(cmd, args):
|
|
global __the_dumper__
|
|
method = getattr(__the_dumper__, cmd)
|
|
method(args)
|
|
|
|
__the_dumper__=Dumper()
|
|
__the_dumper__.runit()
|