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417 lines
17 KiB
417 lines
17 KiB
"""The glue between the Python debugger interface and the Active Debugger interface
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"""
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from win32com.axdebug.util import trace, _wrap, _wrap_remove
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from win32com.server.util import unwrap
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import win32com.client.connect
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from . import gateways
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import sys, bdb, traceback
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import axdebug, stackframe
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import win32api, pythoncom
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import _thread, os
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def fnull(*args):
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pass
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try:
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os.environ["DEBUG_AXDEBUG"]
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debugging = 1
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except KeyError:
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debugging = 0
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traceenter = fnull # trace enter of functions
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tracev = fnull # verbose trace
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if debugging:
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traceenter = trace # trace enter of functions
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tracev = trace # verbose trace
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class OutputReflector:
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def __init__(self, file, writefunc):
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self.writefunc = writefunc
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self.file = file
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def __getattr__(self,name):
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return getattr(self.file, name)
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def write(self,message):
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self.writefunc(message)
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self.file.write(message)
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def _dumpf(frame):
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if frame is None:
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return "<None>"
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else:
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addn = "(with trace!)"
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if frame.f_trace is None:
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addn = " **No Trace Set **"
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return "Frame at %d, file %s, line: %d%s" % (id(frame), frame.f_code.co_filename, frame.f_lineno, addn)
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g_adb = None
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def OnSetBreakPoint(codeContext, breakPointState, lineNo):
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try:
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fileName = codeContext.codeContainer.GetFileName()
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# inject the code into linecache.
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import linecache
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linecache.cache[fileName] = 0, 0, codeContext.codeContainer.GetText(), fileName
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g_adb._OnSetBreakPoint(fileName, codeContext, breakPointState, lineNo+1)
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except:
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traceback.print_exc()
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class Adb(bdb.Bdb,gateways.RemoteDebugApplicationEvents):
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def __init__(self):
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self.debugApplication = None
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self.debuggingThread = None
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self.debuggingThreadStateHandle = None
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self.stackSnifferCookie = self.stackSniffer = None
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self.codeContainerProvider = None
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self.debuggingThread = None
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self.breakFlags = None
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self.breakReason = None
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self.appDebugger = None
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self.appEventConnection = None
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self.logicalbotframe = None # Anything at this level or below does not exist!
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self.currentframe = None # The frame we are currently in.
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self.recursiveData = [] # Data saved for each reentery on this thread.
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bdb.Bdb.__init__(self)
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self._threadprotectlock = _thread.allocate_lock()
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self.reset()
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def canonic(self, fname):
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if fname[0]=='<':
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return fname
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return bdb.Bdb.canonic(self, fname)
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def reset(self):
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traceenter("adb.reset")
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bdb.Bdb.reset(self)
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def __xxxxx__set_break(self, filename, lineno, cond = None):
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# As per standard one, except no linecache checking!
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if filename not in self.breaks:
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self.breaks[filename] = []
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list = self.breaks[filename]
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if lineno in list:
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return 'There is already a breakpoint there!'
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list.append(lineno)
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if cond is not None: self.cbreaks[filename, lineno]=cond
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def stop_here(self, frame):
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traceenter("stop_here", _dumpf(frame), _dumpf(self.stopframe))
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# As per bdb.stop_here, except for logicalbotframe
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## if self.stopframe is None:
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## return 1
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if frame is self.stopframe:
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return 1
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tracev("stop_here said 'No'!")
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return 0
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def break_here(self, frame):
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traceenter("break_here", self.breakFlags, _dumpf(frame))
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self.breakReason = None
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if self.breakFlags==axdebug.APPBREAKFLAG_DEBUGGER_HALT:
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self.breakReason = axdebug.BREAKREASON_DEBUGGER_HALT
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elif self.breakFlags==axdebug.APPBREAKFLAG_DEBUGGER_BLOCK:
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self.breakReason = axdebug.BREAKREASON_DEBUGGER_BLOCK
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elif self.breakFlags==axdebug.APPBREAKFLAG_STEP:
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self.breakReason = axdebug.BREAKREASON_STEP
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else:
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print("Calling base 'break_here' with", self.breaks)
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if bdb.Bdb.break_here(self, frame):
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self.breakReason = axdebug.BREAKREASON_BREAKPOINT
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return self.breakReason is not None
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def break_anywhere(self, frame):
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traceenter("break_anywhere", _dumpf(frame))
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if self.breakFlags==axdebug.APPBREAKFLAG_DEBUGGER_HALT:
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self.breakReason = axdebug.BREAKREASON_DEBUGGER_HALT
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return 1
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rc = bdb.Bdb.break_anywhere(self, frame)
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tracev("break_anywhere",_dumpf(frame),"returning",rc)
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return rc
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def dispatch_return(self, frame, arg):
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traceenter("dispatch_return", _dumpf(frame), arg)
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if self.logicalbotframe is frame:
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# We dont want to debug parent frames.
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tracev("dispatch_return resetting sys.trace")
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sys.settrace(None)
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return
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# self.bSetTrace = 0
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self.currentframe = frame.f_back
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return bdb.Bdb.dispatch_return(self, frame, arg)
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def dispatch_line(self, frame):
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traceenter("dispatch_line", _dumpf(frame), _dumpf(self.botframe))
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# trace("logbotframe is", _dumpf(self.logicalbotframe), "botframe is", self.botframe)
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if frame is self.logicalbotframe:
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trace("dispatch_line", _dumpf(frame), "for bottom frame returing tracer")
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# The next code executed in the frame above may be a builtin (eg, apply())
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# in which sys.trace needs to be set.
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sys.settrace(self.trace_dispatch)
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# And return the tracer incase we are about to execute Python code,
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# in which case sys tracer is ignored!
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return self.trace_dispatch
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if self.codeContainerProvider.FromFileName(frame.f_code.co_filename) is None:
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trace("dispatch_line has no document for", _dumpf(frame), "- skipping trace!")
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return None
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self.currentframe = frame # So the stack sniffer knows our most recent, debuggable code.
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return bdb.Bdb.dispatch_line(self, frame)
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def dispatch_call(self, frame, arg):
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traceenter("dispatch_call",_dumpf(frame))
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frame.f_locals['__axstack_address__'] = axdebug.GetStackAddress()
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if frame is self.botframe:
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trace("dispatch_call is self.botframe - returning tracer")
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return self.trace_dispatch
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# Not our bottom frame. If we have a document for it,
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# then trace it, otherwise run at full speed.
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if self.codeContainerProvider.FromFileName(frame.f_code.co_filename) is None:
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trace("dispatch_call has no document for", _dumpf(frame), "- skipping trace!")
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## sys.settrace(None)
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return None
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return self.trace_dispatch
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# rc = bdb.Bdb.dispatch_call(self, frame, arg)
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# trace("dispatch_call", _dumpf(frame),"returned",rc)
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# return rc
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def trace_dispatch(self, frame, event, arg):
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traceenter("trace_dispatch", _dumpf(frame), event, arg)
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if self.debugApplication is None:
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trace("trace_dispatch has no application!")
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return # None
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return bdb.Bdb.trace_dispatch(self, frame, event, arg)
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#
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# The user functions do bugger all!
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#
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# def user_call(self, frame, argument_list):
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# traceenter("user_call",_dumpf(frame))
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def user_line(self, frame):
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traceenter("user_line",_dumpf(frame))
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# Traces at line zero
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if frame.f_lineno!=0:
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breakReason = self.breakReason
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if breakReason is None:
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breakReason = axdebug.BREAKREASON_STEP
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self._HandleBreakPoint(frame, None, breakReason)
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def user_return(self, frame, return_value):
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# traceenter("user_return",_dumpf(frame),return_value)
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bdb.Bdb.user_return(self, frame, return_value)
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def user_exception(self, frame, exc_info):
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# traceenter("user_exception")
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bdb.Bdb.user_exception(self, frame, exc_info)
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def _HandleBreakPoint(self, frame, tb, reason):
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traceenter("Calling HandleBreakPoint with reason", reason,"at frame", _dumpf(frame))
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traceenter(" Current frame is", _dumpf(self.currentframe))
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try:
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resumeAction = self.debugApplication.HandleBreakPoint(reason)
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tracev("HandleBreakPoint returned with ", resumeAction)
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except pythoncom.com_error as details:
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# Eeek - the debugger is dead, or something serious is happening.
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# Assume we should continue
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resumeAction = axdebug.BREAKRESUMEACTION_CONTINUE
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trace("HandleBreakPoint FAILED with", details)
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self.stack = []
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self.curindex = 0
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if resumeAction == axdebug.BREAKRESUMEACTION_ABORT:
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self.set_quit()
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elif resumeAction == axdebug.BREAKRESUMEACTION_CONTINUE:
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tracev("resume action is continue")
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self.set_continue()
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elif resumeAction == axdebug.BREAKRESUMEACTION_STEP_INTO:
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tracev("resume action is step")
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self.set_step()
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elif resumeAction == axdebug.BREAKRESUMEACTION_STEP_OVER:
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tracev("resume action is next")
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self.set_next(frame)
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elif resumeAction == axdebug.BREAKRESUMEACTION_STEP_OUT:
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tracev("resume action is stop out")
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self.set_return(frame)
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else:
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raise ValueError("unknown resume action flags")
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self.breakReason = None
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def set_trace(self):
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self.breakReason = axdebug.BREAKREASON_LANGUAGE_INITIATED
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bdb.Bdb.set_trace(self)
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def CloseApp(self):
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traceenter("ClosingApp")
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self.reset()
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self.logicalbotframe = None
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if self.stackSnifferCookie is not None:
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try:
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self.debugApplication.RemoveStackFrameSniffer(self.stackSnifferCookie)
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except pythoncom.com_error:
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trace("*** Could not RemoveStackFrameSniffer %d" % (self.stackSnifferCookie))
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if self.stackSniffer:
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_wrap_remove(self.stackSniffer)
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self.stackSnifferCookie = self.stackSniffer = None
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if self.appEventConnection is not None:
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self.appEventConnection.Disconnect()
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self.appEventConnection = None
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self.debugApplication = None
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self.appDebugger = None
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if self.codeContainerProvider is not None:
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self.codeContainerProvider.Close()
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self.codeContainerProvider = None
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def AttachApp(self, debugApplication, codeContainerProvider):
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# traceenter("AttachApp", debugApplication, codeContainerProvider)
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self.codeContainerProvider = codeContainerProvider
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self.debugApplication = debugApplication
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self.stackSniffer = _wrap(stackframe.DebugStackFrameSniffer(self), axdebug.IID_IDebugStackFrameSniffer)
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self.stackSnifferCookie = debugApplication.AddStackFrameSniffer(self.stackSniffer)
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# trace("StackFrameSniffer added (%d)" % self.stackSnifferCookie)
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# Connect to the application events.
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self.appEventConnection = win32com.client.connect.SimpleConnection(self.debugApplication, self, axdebug.IID_IRemoteDebugApplicationEvents)
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def ResetAXDebugging(self):
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traceenter("ResetAXDebugging", self, "with refcount", len(self.recursiveData))
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if win32api.GetCurrentThreadId()!=self.debuggingThread:
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trace("ResetAXDebugging called on other thread")
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return
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if len(self.recursiveData)==0:
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# print "ResetAXDebugging called for final time."
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self.logicalbotframe = None
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self.debuggingThread = None
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self.currentframe = None
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self.debuggingThreadStateHandle = None
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return
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self.logbotframe, self.stopframe, self.currentframe, self.debuggingThreadStateHandle = self.recursiveData[0]
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self.recursiveData = self.recursiveData[1:]
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def SetupAXDebugging(self, baseFrame = None, userFrame = None):
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"""Get ready for potential debugging. Must be called on the thread
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that is being debugged.
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"""
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# userFrame is for non AXScript debugging. This is the first frame of the
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# users code.
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if userFrame is None:
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userFrame = baseFrame
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else:
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# We have missed the "dispatch_call" function, so set this up now!
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userFrame.f_locals['__axstack_address__'] = axdebug.GetStackAddress()
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traceenter("SetupAXDebugging", self)
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self._threadprotectlock.acquire()
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try:
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thisThread = win32api.GetCurrentThreadId()
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if self.debuggingThread is None:
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self.debuggingThread = thisThread
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else:
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if self.debuggingThread!=thisThread:
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trace("SetupAXDebugging called on other thread - ignored!")
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return
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# push our context.
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self.recursiveData.insert(0, (self.logicalbotframe,self.stopframe, self.currentframe,self.debuggingThreadStateHandle))
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finally:
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self._threadprotectlock.release()
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trace("SetupAXDebugging has base frame as", _dumpf(baseFrame))
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self.botframe = baseFrame
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self.stopframe = userFrame
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self.logicalbotframe = baseFrame
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self.currentframe = None
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self.debuggingThreadStateHandle = axdebug.GetThreadStateHandle()
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self._BreakFlagsChanged()
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# RemoteDebugApplicationEvents
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def OnConnectDebugger(self, appDebugger):
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traceenter("OnConnectDebugger", appDebugger)
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self.appDebugger = appDebugger
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# Reflect output to appDebugger
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writefunc = lambda s: appDebugger.onDebugOutput(s)
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sys.stdout = OutputReflector(sys.stdout, writefunc)
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sys.stderr = OutputReflector(sys.stderr, writefunc)
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def OnDisconnectDebugger(self):
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traceenter("OnDisconnectDebugger")
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# Stop reflecting output
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if isinstance(sys.stdout, OutputReflector):
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sys.stdout = sys.stdout.file
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if isinstance(sys.stderr, OutputReflector):
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sys.stderr = sys.stderr.file
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self.appDebugger = None
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self.set_quit()
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def OnSetName(self, name):
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traceenter("OnSetName", name)
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def OnDebugOutput(self, string):
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traceenter("OnDebugOutput", string)
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def OnClose(self):
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traceenter("OnClose")
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def OnEnterBreakPoint(self, rdat):
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traceenter("OnEnterBreakPoint", rdat)
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def OnLeaveBreakPoint(self, rdat):
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traceenter("OnLeaveBreakPoint", rdat)
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def OnCreateThread(self, rdat):
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traceenter("OnCreateThread", rdat)
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def OnDestroyThread(self, rdat):
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traceenter("OnDestroyThread", rdat)
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def OnBreakFlagChange(self, abf, rdat):
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traceenter("Debugger OnBreakFlagChange", abf, rdat)
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self.breakFlags = abf
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self._BreakFlagsChanged()
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def _BreakFlagsChanged(self):
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traceenter("_BreakFlagsChanged to %s with our thread = %s, and debugging thread = %s" % (self.breakFlags, self.debuggingThread, win32api.GetCurrentThreadId()))
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trace("_BreakFlagsChanged has breaks", self.breaks)
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# If a request comes on our debugging thread, then do it now!
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# if self.debuggingThread!=win32api.GetCurrentThreadId():
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# return
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if len(self.breaks) or self.breakFlags:
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if self.logicalbotframe:
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trace("BreakFlagsChange with bot frame", _dumpf(self.logicalbotframe))
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# We have frames not to be debugged (eg, Scripting engine frames
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# (sys.settrace will be set when out logicalbotframe is hit -
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# this may not be the right thing to do, as it may not cause the
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# immediate break we desire.)
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self.logicalbotframe.f_trace = self.trace_dispatch
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else:
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trace("BreakFlagsChanged, but no bottom frame")
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if self.stopframe is not None:
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self.stopframe.f_trace = self.trace_dispatch
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# If we have the thread-state for the thread being debugged, then
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# we dynamically set its trace function - it is possible that the thread
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# being debugged is in a blocked call (eg, a message box) and we
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# want to hit the debugger the instant we return
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if self.debuggingThreadStateHandle is not None and \
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self.breakFlags and \
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self.debuggingThread != win32api.GetCurrentThreadId():
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axdebug.SetThreadStateTrace(self.debuggingThreadStateHandle, self.trace_dispatch)
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def _OnSetBreakPoint(self, key, codeContext, bps, lineNo):
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traceenter("_OnSetBreakPoint", self, key, codeContext, bps, lineNo)
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if bps==axdebug.BREAKPOINT_ENABLED:
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problem = self.set_break(key, lineNo)
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if problem:
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print("*** set_break failed -", problem)
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trace("_OnSetBreakPoint just set BP and has breaks", self.breaks)
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else:
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self.clear_break(key, lineNo)
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self._BreakFlagsChanged()
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trace("_OnSetBreakPoint leaving with breaks", self.breaks)
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def Debugger():
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global g_adb
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if g_adb is None:
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g_adb = Adb()
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return g_adb
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