diff options
Diffstat (limited to 'lib/jython/Lib/bdb.py')
| -rw-r--r-- | lib/jython/Lib/bdb.py | 565 |
1 files changed, 0 insertions, 565 deletions
diff --git a/lib/jython/Lib/bdb.py b/lib/jython/Lib/bdb.py deleted file mode 100644 index 8f1367def..000000000 --- a/lib/jython/Lib/bdb.py +++ /dev/null @@ -1,565 +0,0 @@ -"""Debugger basics"""
-
-import sys
-import os
-import types
-
-__all__ = ["BdbQuit","Bdb","Breakpoint"]
-
-BdbQuit = 'bdb.BdbQuit' # Exception to give up completely
-
-
-class Bdb:
-
- """Generic Python debugger base class.
-
- This class takes care of details of the trace facility;
- a derived class should implement user interaction.
- The standard debugger class (pdb.Pdb) is an example.
- """
-
- def __init__(self):
- self.breaks = {}
- self.fncache = {}
-
- def canonic(self, filename):
- canonic = self.fncache.get(filename)
- if not canonic:
- canonic = os.path.abspath(filename)
- self.fncache[filename] = canonic
- return canonic
-
- def reset(self):
- import linecache
- linecache.checkcache()
- self.botframe = None
- self.stopframe = None
- self.returnframe = None
- self.quitting = 0
-
- def trace_dispatch(self, frame, event, arg):
- if self.quitting:
- return # None
- if event == 'line':
- return self.dispatch_line(frame)
- if event == 'call':
- return self.dispatch_call(frame, arg)
- if event == 'return':
- return self.dispatch_return(frame, arg)
- if event == 'exception':
- return self.dispatch_exception(frame, arg)
- print 'bdb.Bdb.dispatch: unknown debugging event:', `event`
- return self.trace_dispatch
-
- def dispatch_line(self, frame):
- if self.stop_here(frame) or self.break_here(frame):
- self.user_line(frame)
- if self.quitting: raise BdbQuit
- return self.trace_dispatch
-
- def dispatch_call(self, frame, arg):
- # XXX 'arg' is no longer used
- if self.botframe is None:
- # First call of dispatch since reset()
- self.botframe = frame
- return self.trace_dispatch
- if not (self.stop_here(frame) or self.break_anywhere(frame)):
- # No need to trace this function
- return # None
- self.user_call(frame, arg)
- if self.quitting: raise BdbQuit
- return self.trace_dispatch
-
- def dispatch_return(self, frame, arg):
- if self.stop_here(frame) or frame == self.returnframe:
- self.user_return(frame, arg)
- if self.quitting: raise BdbQuit
-
- def dispatch_exception(self, frame, arg):
- if self.stop_here(frame):
- self.user_exception(frame, arg)
- if self.quitting: raise BdbQuit
- return self.trace_dispatch
-
- # Normally derived classes don't override the following
- # methods, but they may if they want to redefine the
- # definition of stopping and breakpoints.
-
- def stop_here(self, frame):
- if self.stopframe is None:
- return 1
- if frame is self.stopframe:
- return 1
- while frame is not None and frame is not self.stopframe:
- if frame is self.botframe:
- return 1
- frame = frame.f_back
- return 0
-
- def break_here(self, frame):
- filename = self.canonic(frame.f_code.co_filename)
- if not self.breaks.has_key(filename):
- return 0
- lineno = frame.f_lineno
- if not lineno in self.breaks[filename]:
- return 0
- # flag says ok to delete temp. bp
- (bp, flag) = effective(filename, lineno, frame)
- if bp:
- self.currentbp = bp.number
- if (flag and bp.temporary):
- self.do_clear(str(bp.number))
- return 1
- else:
- return 0
-
- def do_clear(self, arg):
- raise NotImplementedError, "subclass of bdb must implement do_clear()"
-
- def break_anywhere(self, frame):
- return self.breaks.has_key(
- self.canonic(frame.f_code.co_filename))
-
- # Derived classes should override the user_* methods
- # to gain control.
-
- 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."""
- pass
-
- def user_line(self, frame):
- """This method is called when we stop or break at this line."""
- pass
-
- def user_return(self, frame, return_value):
- """This method is called when a return trap is set here."""
- pass
-
- def user_exception(self, frame, (exc_type, exc_value, exc_traceback)):
- """This method is called if an exception occurs,
- but only if we are to stop at or just below this level."""
- pass
-
- # Derived classes and clients can call the following methods
- # to affect the stepping state.
-
- def set_step(self):
- """Stop after one line of code."""
- self.stopframe = None
- self.returnframe = None
- self.quitting = 0
-
- def set_next(self, frame):
- """Stop on the next line in or below the given frame."""
- self.stopframe = frame
- self.returnframe = None
- self.quitting = 0
-
- def set_return(self, frame):
- """Stop when returning from the given frame."""
- self.stopframe = frame.f_back
- self.returnframe = frame
- self.quitting = 0
-
- def set_trace(self):
- """Start debugging from here."""
- try:
- 1 + ''
- except:
- frame = sys.exc_info()[2].tb_frame.f_back
- self.reset()
- while frame:
- frame.f_trace = self.trace_dispatch
- self.botframe = frame
- frame = frame.f_back
- self.set_step()
- sys.settrace(self.trace_dispatch)
-
- def set_continue(self):
- # Don't stop except at breakpoints or when finished
- self.stopframe = self.botframe
- self.returnframe = None
- self.quitting = 0
- if not self.breaks:
- # no breakpoints; run without debugger overhead
- sys.settrace(None)
- try:
- 1 + '' # raise an exception
- except:
- frame = sys.exc_info()[2].tb_frame.f_back
- while frame and frame is not self.botframe:
- del frame.f_trace
- frame = frame.f_back
-
- def set_quit(self):
- self.stopframe = self.botframe
- self.returnframe = None
- self.quitting = 1
- sys.settrace(None)
-
- # Derived classes and clients can call the following methods
- # to manipulate breakpoints. These methods return an
- # error message is something went wrong, None if all is well.
- # Set_break prints out the breakpoint line and file:lineno.
- # Call self.get_*break*() to see the breakpoints or better
- # for bp in Breakpoint.bpbynumber: if bp: bp.bpprint().
-
- def set_break(self, filename, lineno, temporary=0, cond = None):
- filename = self.canonic(filename)
- import linecache # Import as late as possible
- line = linecache.getline(filename, lineno)
- if not line:
- return 'Line %s:%d does not exist' % (filename,
- lineno)
- if not self.breaks.has_key(filename):
- self.breaks[filename] = []
- list = self.breaks[filename]
- if not lineno in list:
- list.append(lineno)
- bp = Breakpoint(filename, lineno, temporary, cond)
-
- def clear_break(self, filename, lineno):
- filename = self.canonic(filename)
- if not self.breaks.has_key(filename):
- return 'There are no breakpoints in %s' % filename
- if lineno not in self.breaks[filename]:
- return 'There is no breakpoint at %s:%d' % (filename,
- lineno)
- # If there's only one bp in the list for that file,line
- # pair, then remove the breaks entry
- for bp in Breakpoint.bplist[filename, lineno][:]:
- bp.deleteMe()
- if not Breakpoint.bplist.has_key((filename, lineno)):
- self.breaks[filename].remove(lineno)
- if not self.breaks[filename]:
- del self.breaks[filename]
-
- def clear_bpbynumber(self, arg):
- try:
- number = int(arg)
- except:
- return 'Non-numeric breakpoint number (%s)' % arg
- try:
- bp = Breakpoint.bpbynumber[number]
- except IndexError:
- return 'Breakpoint number (%d) out of range' % number
- if not bp:
- return 'Breakpoint (%d) already deleted' % number
- self.clear_break(bp.file, bp.line)
-
- def clear_all_file_breaks(self, filename):
- filename = self.canonic(filename)
- if not self.breaks.has_key(filename):
- return 'There are no breakpoints in %s' % filename
- 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_break(self, filename, lineno):
- filename = self.canonic(filename)
- return self.breaks.has_key(filename) and \
- lineno in self.breaks[filename]
-
- def get_breaks(self, filename, lineno):
- filename = self.canonic(filename)
- return self.breaks.has_key(filename) and \
- lineno in self.breaks[filename] and \
- Breakpoint.bplist[filename, lineno] or []
-
- def get_file_breaks(self, filename):
- filename = self.canonic(filename)
- if self.breaks.has_key(filename):
- 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
- return stack, i
-
- #
-
- def format_stack_entry(self, frame_lineno, lprefix=': '):
- import linecache, repr
- frame, lineno = frame_lineno
- filename = self.canonic(frame.f_code.co_filename)
- s = filename + '(' + `lineno` + ')'
- if frame.f_code.co_name:
- s = s + frame.f_code.co_name
- else:
- s = s + "<lambda>"
- if frame.f_locals.has_key('__args__'):
- args = frame.f_locals['__args__']
- else:
- args = None
- if args:
- s = s + repr.repr(args)
- else:
- s = s + '()'
- if frame.f_locals.has_key('__return__'):
- rv = frame.f_locals['__return__']
- s = s + '->'
- s = s + repr.repr(rv)
- line = linecache.getline(filename, lineno)
- if line: s = s + lprefix + line.strip()
- return s
-
- # The following two methods can be called by clients to use
- # a debugger to debug a statement, given as a string.
-
- 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()
- sys.settrace(self.trace_dispatch)
- if not isinstance(cmd, types.CodeType):
- cmd = cmd+'\n'
- try:
- try:
- exec cmd in globals, locals
- except BdbQuit:
- pass
- finally:
- self.quitting = 1
- 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)
- if not isinstance(expr, types.CodeType):
- expr = expr+'\n'
- try:
- try:
- return eval(expr, globals, locals)
- except BdbQuit:
- pass
- finally:
- self.quitting = 1
- 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):
- self.reset()
- sys.settrace(self.trace_dispatch)
- res = None
- try:
- try:
- res = apply(func, args)
- except BdbQuit:
- pass
- finally:
- self.quitting = 1
- sys.settrace(None)
- return res
-
-
-def set_trace():
- Bdb().set_trace()
-
-
-class Breakpoint:
-
- """Breakpoint class
-
- Implements temporary breakpoints, ignore counts, disabling and
- (re)-enabling, and conditionals.
-
- Breakpoints are indexed by number through bpbynumber and by
- the file,line tuple using bplist. The former points to a
- single instance of class Breakpoint. The latter points to a
- list of such instances since there may be more than one
- breakpoint per line.
-
- """
-
- # XXX Keeping state in the class is a mistake -- this means
- # you cannot have more than one active Bdb instance.
-
- next = 1 # Next bp to be assigned
- bplist = {} # indexed by (file, lineno) tuple
- bpbynumber = [None] # Each entry is None or an instance of Bpt
- # index 0 is unused, except for marking an
- # effective break .... see effective()
-
- def __init__(self, file, line, temporary=0, cond = None):
- self.file = file # This better be in canonical form!
- self.line = line
- self.temporary = temporary
- self.cond = cond
- self.enabled = 1
- self.ignore = 0
- self.hits = 0
- self.number = Breakpoint.next
- Breakpoint.next = Breakpoint.next + 1
- # Build the two lists
- self.bpbynumber.append(self)
- if self.bplist.has_key((file, line)):
- self.bplist[file, line].append(self)
- else:
- self.bplist[file, line] = [self]
-
-
- def deleteMe(self):
- index = (self.file, self.line)
- self.bpbynumber[self.number] = None # No longer in list
- self.bplist[index].remove(self)
- if not self.bplist[index]:
- # No more bp for this f:l combo
- del self.bplist[index]
-
- def enable(self):
- self.enabled = 1
-
- def disable(self):
- self.enabled = 0
-
- def bpprint(self):
- if self.temporary:
- disp = 'del '
- else:
- disp = 'keep '
- if self.enabled:
- disp = disp + 'yes'
- else:
- disp = disp + 'no '
- print '%-4dbreakpoint %s at %s:%d' % (self.number, disp,
- self.file, self.line)
- if self.cond:
- print '\tstop only if %s' % (self.cond,)
- if self.ignore:
- print '\tignore next %d hits' % (self.ignore)
- if (self.hits):
- if (self.hits > 1): ss = 's'
- else: ss = ''
- print ('\tbreakpoint already hit %d time%s' %
- (self.hits, ss))
-
-# -----------end of Breakpoint class----------
-
-# Determines if there is an effective (active) breakpoint at this
-# line of code. Returns breakpoint number or 0 if none
-def effective(file, line, frame):
- """Determine which breakpoint for this file:line is to be acted upon.
-
- Called only if we know there is a bpt at this
- location. Returns breakpoint that was triggered and a flag
- that indicates if it is ok to delete a temporary bp.
-
- """
- possibles = Breakpoint.bplist[file,line]
- for i in range(0, len(possibles)):
- b = possibles[i]
- if b.enabled == 0:
- continue
- # Count every hit when bp is enabled
- b.hits = b.hits + 1
- if not b.cond:
- # If unconditional, and ignoring,
- # go on to next, else break
- if b.ignore > 0:
- b.ignore = b.ignore -1
- continue
- else:
- # breakpoint and marker that's ok
- # to delete if temporary
- return (b,1)
- else:
- # Conditional bp.
- # Ignore count applies only to those bpt hits where the
- # condition evaluates to true.
- try:
- val = eval(b.cond, frame.f_globals,
- frame.f_locals)
- if val:
- if b.ignore > 0:
- b.ignore = b.ignore -1
- # continue
- else:
- return (b,1)
- # else:
- # continue
- except:
- # if eval fails, most conservative
- # thing is to stop on breakpoint
- # regardless of ignore count.
- # Don't delete temporary,
- # as another hint to user.
- return (b,0)
- return (None, None)
-
-# -------------------- testing --------------------
-
-class Tdb(Bdb):
- def user_call(self, frame, args):
- name = frame.f_code.co_name
- if not name: name = '???'
- print '+++ call', name, args
- def user_line(self, frame):
- import linecache
- name = frame.f_code.co_name
- if not name: name = '???'
- fn = self.canonic(frame.f_code.co_filename)
- line = linecache.getline(fn, frame.f_lineno)
- print '+++', fn, frame.f_lineno, name, ':', line.strip()
- def user_return(self, frame, retval):
- print '+++ return', retval
- def user_exception(self, frame, exc_stuff):
- print '+++ exception', exc_stuff
- self.set_continue()
-
-def foo(n):
- print 'foo(', n, ')'
- x = bar(n*10)
- print 'bar returned', x
-
-def bar(a):
- print 'bar(', a, ')'
- return a/2
-
-def test():
- t = Tdb()
- t.run('import bdb; bdb.foo(10)')
-
-# end
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