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<h1>eric5.DebugClients.Python3.DebugBase</h1>
<p>
Module implementing the debug base class.
</p>
<h3>Global Attributes</h3>
<table>
<tr><td>gRecursionLimit</td></tr>
</table>
<h3>Classes</h3>
<table>
<tr>
<td><a href="#DebugBase">DebugBase</a></td>
<td>Class implementing base class of the debugger.</td>
</tr>
</table>
<h3>Functions</h3>
<table>
<tr>
<td><a href="#printerr">printerr</a></td>
<td>Module function used for debugging the debug client.</td>
</tr><tr>
<td><a href="#setRecursionLimit">setRecursionLimit</a></td>
<td>Module function to set the recursion limit.</td>
</tr>
</table>
<hr /><hr />
<a NAME="DebugBase" ID="DebugBase"></a>
<h2>DebugBase</h2>
<p>
    Class implementing base class of the debugger.
</p><p>
    Provides simple wrapper methods around bdb for the 'owning' client to
    call to step etc.
</p>
<h3>Derived from</h3>
bdb.Bdb
<h3>Class Attributes</h3>
<table>
<tr><td>None</td></tr>
</table>
<h3>Class Methods</h3>
<table>
<tr><td>None</td></tr>
</table>
<h3>Methods</h3>
<table>
<tr>
<td><a href="#DebugBase.__init__">DebugBase</a></td>
<td>Constructor</td>
</tr><tr>
<td><a href="#DebugBase.__do_clear">__do_clear</a></td>
<td>Private method called to clear a temporary breakpoint.</td>
</tr><tr>
<td><a href="#DebugBase.__do_clearWatch">__do_clearWatch</a></td>
<td>Private method called to clear a temporary watch expression.</td>
</tr><tr>
<td><a href="#DebugBase.__effective">__effective</a></td>
<td>Private method to determine, if a watch expression is effective.</td>
</tr><tr>
<td><a href="#DebugBase.__extractExceptionName">__extractExceptionName</a></td>
<td>Private method to extract the exception name given the exception type object.</td>
</tr><tr>
<td><a href="#DebugBase.__extract_stack">__extract_stack</a></td>
<td>Private member to return a list of stack frames.</td>
</tr><tr>
<td><a href="#DebugBase.__sendCallTrace">__sendCallTrace</a></td>
<td>Private method to send a call/return trace.</td>
</tr><tr>
<td><a href="#DebugBase.__skip_it">__skip_it</a></td>
<td>Private method to filter out debugger files.</td>
</tr><tr>
<td><a href="#DebugBase.break_anywhere">break_anywhere</a></td>
<td>Reimplemented from bdb.py to do some special things.</td>
</tr><tr>
<td><a href="#DebugBase.break_here">break_here</a></td>
<td>Reimplemented from bdb.py to fix the filename from the frame.</td>
</tr><tr>
<td><a href="#DebugBase.clear_watch">clear_watch</a></td>
<td>Public method to clear a watch expression.</td>
</tr><tr>
<td><a href="#DebugBase.dispatch_exception">dispatch_exception</a></td>
<td>Reimplemented from bdb.py to always call user_exception.</td>
</tr><tr>
<td><a href="#DebugBase.dispatch_line">dispatch_line</a></td>
<td>Reimplemented from bdb.py to do some special things.</td>
</tr><tr>
<td><a href="#DebugBase.dispatch_return">dispatch_return</a></td>
<td>Reimplemented from bdb.py to handle passive mode cleanly.</td>
</tr><tr>
<td><a href="#DebugBase.fix_frame_filename">fix_frame_filename</a></td>
<td>Public method used to fixup the filename for a given frame.</td>
</tr><tr>
<td><a href="#DebugBase.getCurrentFrame">getCurrentFrame</a></td>
<td>Public method to return the current frame.</td>
</tr><tr>
<td><a href="#DebugBase.getCurrentFrameLocals">getCurrentFrameLocals</a></td>
<td>Public method to return the locals dictionary of the current frame.</td>
</tr><tr>
<td><a href="#DebugBase.getEvent">getEvent</a></td>
<td>Public method to return the last debugger event.</td>
</tr><tr>
<td><a href="#DebugBase.getStack">getStack</a></td>
<td>Public method to get the stack.</td>
</tr><tr>
<td><a href="#DebugBase.get_break">get_break</a></td>
<td>Reimplemented from bdb.py to get the first breakpoint of a particular line.</td>
</tr><tr>
<td><a href="#DebugBase.get_watch">get_watch</a></td>
<td>Public method to get a watch expression.</td>
</tr><tr>
<td><a href="#DebugBase.go">go</a></td>
<td>Public method to resume the thread.</td>
</tr><tr>
<td><a href="#DebugBase.isBroken">isBroken</a></td>
<td>Public method to return the broken state of the debugger.</td>
</tr><tr>
<td><a href="#DebugBase.profile">profile</a></td>
<td>Public method used to trace some stuff independent of the debugger trace function.</td>
</tr><tr>
<td><a href="#DebugBase.setRecursionDepth">setRecursionDepth</a></td>
<td>Public method to determine the current recursion depth.</td>
</tr><tr>
<td><a href="#DebugBase.set_continue">set_continue</a></td>
<td>Reimplemented from bdb.py to always get informed of exceptions.</td>
</tr><tr>
<td><a href="#DebugBase.set_quit">set_quit</a></td>
<td>Public method to quit.</td>
</tr><tr>
<td><a href="#DebugBase.set_trace">set_trace</a></td>
<td>Overridden method of bdb.py to do some special setup.</td>
</tr><tr>
<td><a href="#DebugBase.set_watch">set_watch</a></td>
<td>Public method to set a watch expression.</td>
</tr><tr>
<td><a href="#DebugBase.step">step</a></td>
<td>Public method to perform a step operation in this thread.</td>
</tr><tr>
<td><a href="#DebugBase.stepOut">stepOut</a></td>
<td>Public method to perform a step out of the current call.</td>
</tr><tr>
<td><a href="#DebugBase.stop_here">stop_here</a></td>
<td>Reimplemented to filter out debugger files.</td>
</tr><tr>
<td><a href="#DebugBase.trace_dispatch">trace_dispatch</a></td>
<td>Reimplemented from bdb.py to do some special things.</td>
</tr><tr>
<td><a href="#DebugBase.user_exception">user_exception</a></td>
<td>Reimplemented to report an exception to the debug server.</td>
</tr><tr>
<td><a href="#DebugBase.user_line">user_line</a></td>
<td>Reimplemented to handle the program about to execute a particular line.</td>
</tr><tr>
<td><a href="#DebugBase.user_return">user_return</a></td>
<td>Reimplemented to report program termination to the debug server.</td>
</tr>
</table>
<h3>Static Methods</h3>
<table>
<tr><td>None</td></tr>
</table>
<a NAME="DebugBase.__init__" ID="DebugBase.__init__"></a>
<h4>DebugBase (Constructor)</h4>
<b>DebugBase</b>(<i>dbgClient</i>)
<p>
        Constructor
</p><dl>
<dt><i>dbgClient</i></dt>
<dd>
the owning client
</dd>
</dl><a NAME="DebugBase.__do_clear" ID="DebugBase.__do_clear"></a>
<h4>DebugBase.__do_clear</h4>
<b>__do_clear</b>(<i>filename, lineno</i>)
<p>
        Private method called to clear a temporary breakpoint.
</p><dl>
<dt><i>filename</i></dt>
<dd>
name of the file the bp belongs to
</dd><dt><i>lineno</i></dt>
<dd>
linenumber of the bp
</dd>
</dl><a NAME="DebugBase.__do_clearWatch" ID="DebugBase.__do_clearWatch"></a>
<h4>DebugBase.__do_clearWatch</h4>
<b>__do_clearWatch</b>(<i>cond</i>)
<p>
        Private method called to clear a temporary watch expression.
</p><dl>
<dt><i>cond</i></dt>
<dd>
expression of the watch expression to be cleared (string)
</dd>
</dl><a NAME="DebugBase.__effective" ID="DebugBase.__effective"></a>
<h4>DebugBase.__effective</h4>
<b>__effective</b>(<i>frame</i>)
<p>
        Private method to determine, if a watch expression is effective.
</p><dl>
<dt><i>frame</i></dt>
<dd>
the current execution frame
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
tuple of watch expression and a flag to indicate, that a
            temporary watch expression may be deleted (bdb.Breakpoint, boolean)
</dd>
</dl><a NAME="DebugBase.__extractExceptionName" ID="DebugBase.__extractExceptionName"></a>
<h4>DebugBase.__extractExceptionName</h4>
<b>__extractExceptionName</b>(<i>exctype</i>)
<p>
        Private method to extract the exception name given the exception
        type object.
</p><dl>
<dt><i>exctype</i></dt>
<dd>
type of the exception
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
exception name (string)
</dd>
</dl><a NAME="DebugBase.__extract_stack" ID="DebugBase.__extract_stack"></a>
<h4>DebugBase.__extract_stack</h4>
<b>__extract_stack</b>(<i>exctb</i>)
<p>
        Private member to return a list of stack frames.
</p><dl>
<dt><i>exctb</i></dt>
<dd>
exception traceback
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
list of stack frames
</dd>
</dl><a NAME="DebugBase.__sendCallTrace" ID="DebugBase.__sendCallTrace"></a>
<h4>DebugBase.__sendCallTrace</h4>
<b>__sendCallTrace</b>(<i>event, fromFrame, toFrame</i>)
<p>
        Private method to send a call/return trace.
</p><dl>
<dt><i>event</i></dt>
<dd>
trace event (string)
</dd><dt><i>fromFrame</i></dt>
<dd>
originating frame (frame)
</dd><dt><i>toFrame</i></dt>
<dd>
destination frame (frame)
</dd>
</dl><a NAME="DebugBase.__skip_it" ID="DebugBase.__skip_it"></a>
<h4>DebugBase.__skip_it</h4>
<b>__skip_it</b>(<i>frame</i>)
<p>
        Private method to filter out debugger files.
</p><p>
        Tracing is turned off for files that are part of the
        debugger that are called from the application being debugged.
</p><dl>
<dt><i>frame</i></dt>
<dd>
the frame object
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
flag indicating whether the debugger should skip this frame
</dd>
</dl><a NAME="DebugBase.break_anywhere" ID="DebugBase.break_anywhere"></a>
<h4>DebugBase.break_anywhere</h4>
<b>break_anywhere</b>(<i>frame</i>)
<p>
        Reimplemented from bdb.py to do some special things.
</p><p>
        These speciality is to fix the filename from the frame
        (see fix_frame_filename for more info).
</p><dl>
<dt><i>frame</i></dt>
<dd>
the frame object
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
flag indicating the break status (boolean)
</dd>
</dl><a NAME="DebugBase.break_here" ID="DebugBase.break_here"></a>
<h4>DebugBase.break_here</h4>
<b>break_here</b>(<i>frame</i>)
<p>
        Reimplemented from bdb.py to fix the filename from the frame.
</p><p>
        See fix_frame_filename for more info.
</p><dl>
<dt><i>frame</i></dt>
<dd>
the frame object
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
flag indicating the break status (boolean)
</dd>
</dl><a NAME="DebugBase.clear_watch" ID="DebugBase.clear_watch"></a>
<h4>DebugBase.clear_watch</h4>
<b>clear_watch</b>(<i>cond</i>)
<p>
        Public method to clear a watch expression.
</p><dl>
<dt><i>cond</i></dt>
<dd>
expression of the watch expression to be cleared (string)
</dd>
</dl><a NAME="DebugBase.dispatch_exception" ID="DebugBase.dispatch_exception"></a>
<h4>DebugBase.dispatch_exception</h4>
<b>dispatch_exception</b>(<i>frame, arg</i>)
<p>
        Reimplemented from bdb.py to always call user_exception.
</p><dl>
<dt><i>frame</i></dt>
<dd>
The current stack frame.
</dd><dt><i>arg</i></dt>
<dd>
The arguments
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
local trace function
</dd>
</dl><dl>
<dt>Raises <b>bdb.BdbQuit</b>:</dt>
<dd>
raised to indicate the end of the debug session
</dd>
</dl><a NAME="DebugBase.dispatch_line" ID="DebugBase.dispatch_line"></a>
<h4>DebugBase.dispatch_line</h4>
<b>dispatch_line</b>(<i>frame</i>)
<p>
        Reimplemented from bdb.py to do some special things.
</p><p>
        This speciality is to check the connection to the debug server
        for new events (i.e. new breakpoints) while we are going through
        the code.
</p><dl>
<dt><i>frame</i></dt>
<dd>
The current stack frame.
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
local trace function
</dd>
</dl><dl>
<dt>Raises <b>bdb.BdbQuit</b>:</dt>
<dd>
raised to indicate the end of the debug session
</dd>
</dl><a NAME="DebugBase.dispatch_return" ID="DebugBase.dispatch_return"></a>
<h4>DebugBase.dispatch_return</h4>
<b>dispatch_return</b>(<i>frame, arg</i>)
<p>
        Reimplemented from bdb.py to handle passive mode cleanly.
</p><dl>
<dt><i>frame</i></dt>
<dd>
The current stack frame.
</dd><dt><i>arg</i></dt>
<dd>
The arguments
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
local trace function
</dd>
</dl><dl>
<dt>Raises <b>bdb.BdbQuit</b>:</dt>
<dd>
raised to indicate the end of the debug session
</dd>
</dl><a NAME="DebugBase.fix_frame_filename" ID="DebugBase.fix_frame_filename"></a>
<h4>DebugBase.fix_frame_filename</h4>
<b>fix_frame_filename</b>(<i>frame</i>)
<p>
        Public method used to fixup the filename for a given frame.
</p><p>
        The logic employed here is that if a module was loaded
        from a .pyc file, then the correct .py to operate with
        should be in the same path as the .pyc. The reason this
        logic is needed is that when a .pyc file is generated, the
        filename embedded and thus what is readable in the code object
        of the frame object is the fully qualified filepath when the
        pyc is generated. If files are moved from machine to machine
        this can break debugging as the .pyc will refer to the .py
        on the original machine. Another case might be sharing
        code over a network... This logic deals with that.
</p><dl>
<dt><i>frame</i></dt>
<dd>
the frame object
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
fixed up file name (string)
</dd>
</dl><a NAME="DebugBase.getCurrentFrame" ID="DebugBase.getCurrentFrame"></a>
<h4>DebugBase.getCurrentFrame</h4>
<b>getCurrentFrame</b>(<i></i>)
<p>
        Public method to return the current frame.
</p><dl>
<dt>Returns:</dt>
<dd>
the current frame
</dd>
</dl><a NAME="DebugBase.getCurrentFrameLocals" ID="DebugBase.getCurrentFrameLocals"></a>
<h4>DebugBase.getCurrentFrameLocals</h4>
<b>getCurrentFrameLocals</b>(<i></i>)
<p>
        Public method to return the locals dictionary of the current frame.
</p><dl>
<dt>Returns:</dt>
<dd>
locals dictionary of the current frame
</dd>
</dl><a NAME="DebugBase.getEvent" ID="DebugBase.getEvent"></a>
<h4>DebugBase.getEvent</h4>
<b>getEvent</b>(<i></i>)
<p>
        Public method to return the last debugger event.
</p><dl>
<dt>Returns:</dt>
<dd>
last debugger event (string)
</dd>
</dl><a NAME="DebugBase.getStack" ID="DebugBase.getStack"></a>
<h4>DebugBase.getStack</h4>
<b>getStack</b>(<i></i>)
<p>
        Public method to get the stack.
</p><dl>
<dt>Returns:</dt>
<dd>
list of lists with file name (string), line number (integer)
            and function name (string)
</dd>
</dl><a NAME="DebugBase.get_break" ID="DebugBase.get_break"></a>
<h4>DebugBase.get_break</h4>
<b>get_break</b>(<i>filename, lineno</i>)
<p>
        Reimplemented from bdb.py to get the first breakpoint of a particular
        line.
</p><p>
        Because eric5 supports only one breakpoint per line, this overwritten
        method will return this one and only breakpoint.
</p><dl>
<dt><i>filename</i></dt>
<dd>
the filename of the bp to retrieve (string)
</dd><dt><i>lineno</i></dt>
<dd>
the linenumber of the bp to retrieve (integer)
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
breakpoint or None, if there is no bp
</dd>
</dl><a NAME="DebugBase.get_watch" ID="DebugBase.get_watch"></a>
<h4>DebugBase.get_watch</h4>
<b>get_watch</b>(<i>cond</i>)
<p>
        Public method to get a watch expression.
</p><dl>
<dt><i>cond</i></dt>
<dd>
expression of the watch expression to be cleared (string)
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
reference to the watch point
</dd>
</dl><a NAME="DebugBase.go" ID="DebugBase.go"></a>
<h4>DebugBase.go</h4>
<b>go</b>(<i>special</i>)
<p>
        Public method to resume the thread.
</p><p>
        It resumes the thread stopping only at breakpoints or exceptions.
</p><dl>
<dt><i>special</i></dt>
<dd>
flag indicating a special continue operation
</dd>
</dl><a NAME="DebugBase.isBroken" ID="DebugBase.isBroken"></a>
<h4>DebugBase.isBroken</h4>
<b>isBroken</b>(<i></i>)
<p>
        Public method to return the broken state of the debugger.
</p><dl>
<dt>Returns:</dt>
<dd>
flag indicating the broken state (boolean)
</dd>
</dl><a NAME="DebugBase.profile" ID="DebugBase.profile"></a>
<h4>DebugBase.profile</h4>
<b>profile</b>(<i>frame, event, arg</i>)
<p>
        Public method used to trace some stuff independent of the debugger
        trace function.
</p><dl>
<dt><i>frame</i></dt>
<dd>
current stack frame.
</dd><dt><i>event</i></dt>
<dd>
trace event (string)
</dd><dt><i>arg</i></dt>
<dd>
arguments
</dd>
</dl><dl>
<dt>Raises <b>RuntimeError</b>:</dt>
<dd>
raised to indicate too many recursions
</dd>
</dl><a NAME="DebugBase.setRecursionDepth" ID="DebugBase.setRecursionDepth"></a>
<h4>DebugBase.setRecursionDepth</h4>
<b>setRecursionDepth</b>(<i>frame</i>)
<p>
        Public method to determine the current recursion depth.
</p><dl>
<dt><i>frame</i></dt>
<dd>
The current stack frame.
</dd>
</dl><a NAME="DebugBase.set_continue" ID="DebugBase.set_continue"></a>
<h4>DebugBase.set_continue</h4>
<b>set_continue</b>(<i>special</i>)
<p>
        Reimplemented from bdb.py to always get informed of exceptions.
</p><dl>
<dt><i>special</i></dt>
<dd>
flag indicating a special continue operation
</dd>
</dl><a NAME="DebugBase.set_quit" ID="DebugBase.set_quit"></a>
<h4>DebugBase.set_quit</h4>
<b>set_quit</b>(<i></i>)
<p>
        Public method to quit.
</p><p>
        It wraps call to bdb to clear the current frame properly.
</p><a NAME="DebugBase.set_trace" ID="DebugBase.set_trace"></a>
<h4>DebugBase.set_trace</h4>
<b>set_trace</b>(<i>frame=None</i>)
<p>
        Overridden method of bdb.py to do some special setup.
</p><dl>
<dt><i>frame</i></dt>
<dd>
frame to start debugging from
</dd>
</dl><a NAME="DebugBase.set_watch" ID="DebugBase.set_watch"></a>
<h4>DebugBase.set_watch</h4>
<b>set_watch</b>(<i>cond, temporary=False</i>)
<p>
        Public method to set a watch expression.
</p><dl>
<dt><i>cond</i></dt>
<dd>
expression of the watch expression (string)
</dd><dt><i>temporary</i></dt>
<dd>
flag indicating a temporary watch expression (boolean)
</dd>
</dl><a NAME="DebugBase.step" ID="DebugBase.step"></a>
<h4>DebugBase.step</h4>
<b>step</b>(<i>traceMode</i>)
<p>
        Public method to perform a step operation in this thread.
</p><dl>
<dt><i>traceMode</i></dt>
<dd>
If it is True, then the step is a step into,
              otherwise it is a step over.
</dd>
</dl><a NAME="DebugBase.stepOut" ID="DebugBase.stepOut"></a>
<h4>DebugBase.stepOut</h4>
<b>stepOut</b>(<i></i>)
<p>
        Public method to perform a step out of the current call.
</p><a NAME="DebugBase.stop_here" ID="DebugBase.stop_here"></a>
<h4>DebugBase.stop_here</h4>
<b>stop_here</b>(<i>frame</i>)
<p>
        Reimplemented to filter out debugger files.
</p><p>
        Tracing is turned off for files that are part of the
        debugger that are called from the application being debugged.
</p><dl>
<dt><i>frame</i></dt>
<dd>
the frame object
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
flag indicating whether the debugger should stop here
</dd>
</dl><a NAME="DebugBase.trace_dispatch" ID="DebugBase.trace_dispatch"></a>
<h4>DebugBase.trace_dispatch</h4>
<b>trace_dispatch</b>(<i>frame, event, arg</i>)
<p>
        Reimplemented from bdb.py to do some special things.
</p><p>
        This specialty is to check the connection to the debug server
        for new events (i.e. new breakpoints) while we are going through
        the code.
</p><dl>
<dt><i>frame</i></dt>
<dd>
The current stack frame.
</dd><dt><i>event</i></dt>
<dd>
The trace event (string)
</dd><dt><i>arg</i></dt>
<dd>
The arguments
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
local trace function
</dd>
</dl><a NAME="DebugBase.user_exception" ID="DebugBase.user_exception"></a>
<h4>DebugBase.user_exception</h4>
<b>user_exception</b>(<i>frame, excinfo, unhandled=False</i>)
<p>
        Reimplemented to report an exception to the debug server.
</p><dl>
<dt><i>frame</i></dt>
<dd>
the frame object
</dd><dt><i>excinfo</i></dt>
<dd>
information about the exception
</dd><dt><i>unhandled</i></dt>
<dd>
flag indicating an uncaught exception
</dd>
</dl><a NAME="DebugBase.user_line" ID="DebugBase.user_line"></a>
<h4>DebugBase.user_line</h4>
<b>user_line</b>(<i>frame</i>)
<p>
        Reimplemented to handle the program about to execute a particular line.
</p><dl>
<dt><i>frame</i></dt>
<dd>
the frame object
</dd>
</dl><a NAME="DebugBase.user_return" ID="DebugBase.user_return"></a>
<h4>DebugBase.user_return</h4>
<b>user_return</b>(<i>frame, retval</i>)
<p>
        Reimplemented to report program termination to the debug server.
</p><dl>
<dt><i>frame</i></dt>
<dd>
the frame object
</dd><dt><i>retval</i></dt>
<dd>
the return value of the program
</dd>
</dl>
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<a NAME="printerr" ID="printerr"></a>
<h2>printerr</h2>
<b>printerr</b>(<i>s</i>)
<p>
    Module function used for debugging the debug client.
</p><dl>
<dt><i>s</i></dt>
<dd>
data to be printed
</dd>
</dl>
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<a NAME="setRecursionLimit" ID="setRecursionLimit"></a>
<h2>setRecursionLimit</h2>
<b>setRecursionLimit</b>(<i>limit</i>)
<p>
    Module function to set the recursion limit.
</p><dl>
<dt><i>limit</i></dt>
<dd>
recursion limit (integer)
</dd>
</dl>
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