← Back
Editing: bdb.cpython-37.pyc
B � f�{ � @ s� d Z ddlZddlZddlZddlmZmZmZ dddgZeeB eB Z G dd� de �Z G dd� d�Z d d � Z G d d� d�Zd d � Zdd� ZG dd� de �Zdd� Zdd� Zdd� ZdS )zDebugger basics� N)� CO_GENERATOR� CO_COROUTINE�CO_ASYNC_GENERATOR�BdbQuit�Bdb� Breakpointc @ s e Zd ZdZdS )r z Exception to give up completely.N)�__name__� __module__� __qualname__�__doc__� r r �(/opt/alt/python37/lib64/python3.7/bdb.pyr s c @ sp e Zd ZdZdZdd�Zdd� Zdd� Zd d � Zd d � Zd d� Z dd� Z dd� Z dd� Z dd� Z dd� Zdd� Zdd � Zd d � Zd d � Zd!d"� Zd#d$� Zd[d&d'�Zd\d(d)�Zd*d+� Zd,d-� Zd.d/� Zd]d0d1�Zd2d3� Zd4d5� Z d^d7d8�Z d9d:� Z d;d<� Z d=d>� Z d?d@� Z!dAdB� Z"dCdD� Z#dEdF� Z$dGdH� Z%dIdJ� Z&dKdL� Z'dMdN� Z(d_dPdQ�Z)d`dRdS�Z*dadTdU�Z+dVdW� Z,dXdY� Z-dS )br a 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. The optional skip argument must be an iterable of glob-style module name patterns. The debugger will not step into frames that originate in a module that matches one of these patterns. Whether a frame is considered to originate in a certain module is determined by the __name__ in the frame globals. Nc C s( |r t |�nd | _i | _i | _d | _d S )N)�set�skip�breaks�fncache�frame_returning)�selfr r r r �__init__ s z Bdb.__init__c C sR |d|dd� d kr |S | j �|�}|sNtj�|�}tj�|�}|| j |< |S )a$ Return canonical form of filename. For real filenames, the canonical form is a case-normalized (on case insenstive filesystems) absolute path. 'Filenames' with angle brackets, such as "<stdin>", generated in interactive mode, are returned unchanged. �<� ����>)r �get�os�path�abspath�normcase)r �filename�canonicr r r r % s z Bdb.canonicc C s& ddl }|�� d| _| �dd� dS )z5Set values of attributes as ready to start debugging.r N)� linecache� checkcache�botframe� _set_stopinfo)r r r r r �reset6 s z Bdb.resetc C s� | j r dS |dkr | �|�S |dkr0| �||�S |dkrD| �||�S |dkrX| �||�S |dkrf| jS |dkrt| jS |dkr�| jS td t|�� | jS ) aO Dispatch a trace function for debugged frames based on the event. This function is installed as the trace function for debugged frames. Its return value is the new trace function, which is usually itself. The default implementation decides how to dispatch a frame, depending on the type of event (passed in as a string) that is about to be executed. The event can be one of the following: line: A new line of code is going to be executed. call: A function is about to be called or another code block is entered. return: A function or other code block is about to return. exception: An exception has occurred. c_call: A C function is about to be called. c_return: A C function has returned. c_exception: A C function has raised an exception. For the Python events, specialized functions (see the dispatch_*() methods) are called. For the C events, no action is taken. The arg parameter depends on the previous event. N�lineZcall�returnZ exceptionZc_callZ c_exceptionZc_returnz*bdb.Bdb.dispatch: unknown debugging event:)�quitting� dispatch_line� dispatch_call�dispatch_return�dispatch_exception�trace_dispatch�print�repr)r �frameZevent�argr r r r, = s$ zBdb.trace_dispatchc C s. | � |�s| �|�r(| �|� | jr(t�| jS )a Invoke user function and return trace function for line event. If the debugger stops on the current line, invoke self.user_line(). Raise BdbQuit if self.quitting is set. Return self.trace_dispatch to continue tracing in this scope. )� stop_here� break_here� user_liner' r r, )r r/ r r r r( h s zBdb.dispatch_linec C sd | j dkr|j| _ | jS | �|�s0| �|�s0dS | jrH|jjt@ rH| jS | � ||� | j r^t �| jS )a Invoke user function and return trace function for call event. If the debugger stops on this function call, invoke self.user_call(). Raise BbdQuit if self.quitting is set. Return self.trace_dispatch to continue tracing in this scope. N) r" �f_backr, r1 �break_anywhere� stopframe�f_code�co_flags� GENERATOR_AND_COROUTINE_FLAGS� user_callr' r )r r/ r0 r r r r) t s zBdb.dispatch_callc C s| | � |�s|| jkrv| jr,|jjt@ r,| jS z|| _| �||� W dd| _X | j rVt �| j|krv| j dkrv| � dd� | jS )a Invoke user function and return trace function for return event. If the debugger stops on this function return, invoke self.user_return(). Raise BdbQuit if self.quitting is set. Return self.trace_dispatch to continue tracing in this scope. Nr ) r1 � returnframer6 r7 r8 r9 r, r � user_returnr' r � stoplinenor# )r r/ r0 r r r r* � s zBdb.dispatch_returnc C s� | � |�rF|jjt@ r.|d tkr.|d dks�| �||� | jr�t�nD| jr�|| jk r�| jjjt@ r�|d tt fkr�| �||� | jr�t�| j S )a Invoke user function and return trace function for exception event. If the debugger stops on this exception, invoke self.user_exception(). Raise BdbQuit if self.quitting is set. Return self.trace_dispatch to continue tracing in this scope. r � N) r1 r7 r8 r9 � StopIteration�user_exceptionr' r r6 � GeneratorExitr, )r r/ r0 r r r r+ � s zBdb.dispatch_exceptionc C s$ x | j D ]}t�||�rdS qW dS )z4Return True if module_name matches any skip pattern.TF)r �fnmatch)r Z module_name�patternr r r �is_skipped_module� s zBdb.is_skipped_modulec C sN | j r | �|j�d��r dS || jkr@| jdkr4dS |j| jkS | jsJdS dS )z>Return True if frame is below the starting frame in the stack.r Fr T)r rD � f_globalsr r6 r= �f_lineno)r r/ r r r r1 � s z Bdb.stop_herec C s� | � |jj�}|| jkr dS |j}|| j| krJ|jj}|| j| krJdS t|||�\}}|r�|j| _|r�|j r�| � t |j�� dS dS dS )z�Return True if there is an effective breakpoint for this line. Check for line or function breakpoint and if in effect. Delete temporary breakpoints if effective() says to. FTN) r r7 � co_filenamer rF �co_firstlineno� effective�numberZ currentbp� temporary�do_clear�str)r r/ r �lineno�bp�flagr r r r2 � s zBdb.break_herec C s t d��dS )zlRemove temporary breakpoint. Must implement in derived classes or get NotImplementedError. z)subclass of bdb must implement do_clear()N)�NotImplementedError)r r0 r r r rL � s z Bdb.do_clearc C s | � |jj�| jkS )zEReturn True if there is any breakpoint for frame's filename. )r r7 rG r )r r/ r r r r5 � s zBdb.break_anywherec C s dS )z&Called if we might stop in a function.Nr )r r/ Z argument_listr r r r: � s z Bdb.user_callc C s dS )z'Called when we stop or break at a line.Nr )r r/ r r r r3 s z Bdb.user_linec C s dS )z&Called when a return trap is set here.Nr )r r/ Z return_valuer r r r< s zBdb.user_returnc C s dS )z$Called when we stop on an exception.Nr )r r/ �exc_infor r r r@ s zBdb.user_exceptionr c C s || _ || _d| _|| _dS )z�Set the attributes for stopping. If stoplineno is greater than or equal to 0, then stop at line greater than or equal to the stopline. If stoplineno is -1, then don't stop at all. FN)r6 r; r' r= )r r6 r; r= r r r r# s zBdb._set_stopinfoc C s$ |dkr|j d }| �|||� dS )zxStop when the line with the lineno greater than the current one is reached or when returning from current frame.Nr )rF r# )r r/ rN r r r � set_until s z Bdb.set_untilc C s0 | j r | j j}|r |js | j|_| �dd� dS )z Stop after one line of code.N)r r4 �f_tracer, r# )r Z caller_framer r r �set_step( s z Bdb.set_stepc C s | � |d� dS )z2Stop on the next line in or below the given frame.N)r# )r r/ r r r �set_next4 s z Bdb.set_nextc C s. |j jt@ r | �|dd� n| �|j|� dS )z)Stop when returning from the given frame.Nr )r7 r8 r9 r# r4 )r r/ r r r � set_return8 s zBdb.set_returnc C sP |dkrt �� j}| �� x |r6| j|_|| _|j}q W | �� t �| j� dS )znStart debugging from frame. If frame is not specified, debugging starts from caller's frame. N) �sys� _getframer4 r$ r, rT r" rU �settrace)r r/ r r r � set_trace? s z Bdb.set_tracec C sL | � | jdd� | jsHt�d� t�� j}x |rF|| jk rF|`|j}q,W dS )z�Stop only at breakpoints or when finished. If there are no breakpoints, set the system trace function to None. Nr )r# r" r rX rZ rY r4 rT )r r/ r r r � set_continueN s zBdb.set_continuec C s" | j | _d| _d| _t�d� dS )zuSet quitting attribute to True. Raises BdbQuit exception in the next call to a dispatch_*() method. NT)r" r6 r; r' rX rZ )r r r r �set_quit] s z Bdb.set_quitFc C sb | � |�}ddl}|�||�}|s.d||f S | j�|g �}||krN|�|� t|||||�} dS )z�Set a new breakpoint for filename:lineno. If lineno doesn't exist for the filename, return an error message. The filename should be in canonical form. r NzLine %s:%d does not exist)r r �getliner � setdefault�appendr ) r r rN rK �cond�funcnamer r% �listrO r r r � set_breakn s z Bdb.set_breakc C s4 ||ft jkr | j| �|� | j| s0| j|= dS )a Prune breakpoints for filname:lineno. A list of breakpoints is maintained in the Bdb instance and in the Breakpoint class. If a breakpoint in the Bdb instance no longer exists in the Breakpoint class, then it's removed from the Bdb instance. N)r �bplistr �remove)r r rN r r r � _prune_breaks� s zBdb._prune_breaksc C sn | � |�}|| jkr d| S || j| kr6d||f S x&tj||f dd� D ] }|�� qNW | �||� dS )znDelete breakpoints for filename:lineno. If no breakpoints were set, return an error message. z There are no breakpoints in %sz There is no breakpoint at %s:%dN)r r r re �deleteMerg )r r rN rO r r r � clear_break� s zBdb.clear_breakc C sR y| � |�}W n& tk r4 } zt|�S d}~X Y nX |�� | �|j|j� dS )zxDelete a breakpoint by its index in Breakpoint.bpbynumber. If arg is invalid, return an error message. N)�get_bpbynumber� ValueErrorrM rh rg �filer% )r r0 rO �errr r r �clear_bpbynumber� s zBdb.clear_bpbynumberc C s` | � |�}|| jkr d| S x6| j| D ](}tj||f }x|D ] }|�� q@W q(W | j|= dS )z`Delete all breakpoints in filename. If none were set, return an error message. z There are no breakpoints in %sN)r r r re rh )r r r% ZblistrO r r r �clear_all_file_breaks� s zBdb.clear_all_file_breaksc C s0 | j s dS xtjD ]}|r|�� qW i | _ dS )z]Delete all existing breakpoints. If none were set, return an error message. zThere are no breakpointsN)r r � bpbynumberrh )r rO r r r �clear_all_breaks� s zBdb.clear_all_breaksc C s� |s t d��y t|�}W n" t k r: t d| �d�Y nX ytj| }W n" tk rl t d| �d�Y nX |dkr�t d| ��|S )z�Return a breakpoint by its index in Breakpoint.bybpnumber. For invalid arg values or if the breakpoint doesn't exist, raise a ValueError. zBreakpoint number expectedz Non-numeric breakpoint number %sNz!Breakpoint number %d out of rangez Breakpoint %d already deleted)rk �intr rp � IndexError)r r0 rJ rO r r r rj � s zBdb.get_bpbynumberc C s" | � |�}|| jko || j| kS )z9Return True if there is a breakpoint for filename:lineno.)r r )r r rN r r r � get_break� s z Bdb.get_breakc C s4 | � |�}|| jkr0|| j| kr0tj||f p2g S )znReturn all breakpoints for filename:lineno. If no breakpoints are set, return an empty list. )r r r re )r r rN r r r � get_breaks� s zBdb.get_breaksc C s& | � |�}|| jkr | j| S g S dS )zrReturn all lines with breakpoints for filename. If no breakpoints are set, return an empty list. N)r r )r r r r r �get_file_breaks� s zBdb.get_file_breaksc C s | j S )z$Return all breakpoints that are set.)r )r r r r �get_all_breaks� s zBdb.get_all_breaksc C s� g }|r|j |kr|j}x.|dk rF|�||jf� || jkr>P |j}qW |�� tdt|�d �}x$|dk r�|�|j |j f� |j}qdW |dkr�tdt|�d �}||fS )z�Return a list of (frame, lineno) in a stack trace and a size. List starts with original calling frame, if there is one. Size may be number of frames above or below f. Nr r ) �tb_frame�tb_nextr` rF r" r4 �reverse�max�len� tb_lineno)r �f�t�stack�ir r r � get_stack� s z Bdb.get_stack�: c C s� ddl }ddl}|\}}| �|jj�}d||f }|jjrH||jj7 }n|d7 }|d7 }d|jkr�|jd } |d7 }||�| �7 }|�|||j �} | r�||| � � 7 }|S )a: Return a string with information about a stack entry. The stack entry frame_lineno is a (frame, lineno) tuple. The return string contains the canonical filename, the function name or '<lambda>', the input arguments, the return value, and the line of code (if it exists). r Nz%s(%r)z<lambda>z()Z __return__z->) r �reprlibr r7 rG �co_name�f_localsr. r^ rE �strip) r Z frame_linenoZlprefixr r� r/ rN r �s�rvr% r r r �format_stack_entry s zBdb.format_stack_entryc C s� |dkrddl }|j}|dkr"|}| �� t|t�r@t|dd�}t�| j� z*yt |||� W n t k rr Y nX W dd| _ t�d� X dS )z�Debug a statement executed via the exec() function. globals defaults to __main__.dict; locals defaults to globals. Nr z<string>�execT) �__main__�__dict__r$ � isinstancerM �compilerX rZ r, r� r r' )r �cmd�globals�localsr� r r r �run3 s zBdb.runc C st |dkrddl }|j}|dkr"|}| �� t�| j� z&y t|||�S tk rX Y nX W dd| _t�d� X dS )z�Debug an expression executed via the eval() function. globals defaults to __main__.dict; locals defaults to globals. Nr T) r� r� r$ rX rZ r, �evalr r' )r �exprr� r� r� r r r �runevalI s z Bdb.runevalc C s | � |||� dS )z.For backwards-compatibility. Defers to run().N)r� )r r� r� r� r r r �runctx] s z Bdb.runctxc O s� t | �dkr| ^}}} n>| s&td��n0d|krB|�d�}| ^}} ntdt | �d ��|�� t�|j� d}z(y|| |�}W n tk r� Y nX W dd|_t�d� X |S )zWDebug a single function call. Return the result of the function call. r> z6descriptor 'runcall' of 'Bdb' object needs an argument�funcz7runcall expected at least 1 positional argument, got %dr NT) r| � TypeError�popr$ rX rZ r, r r' )�args�kwdsr r� Zresr r r �runcalld s& z Bdb.runcall)N)r )N)N)FNN)r� )NN)NN).r r r r r r r$ r, r( r) r* r+ rD r1 r2 rL r5 r: r3 r< r@ r# rS rU rV rW r[ r\ r] rd rg ri rn ro rq rj rt ru rv rw r� r� r� r� r� r� r r r r r sX + c C s t � �� dS )z<Start debugging with a Bdb instance from the caller's frame.N)r r[ r r r r r[ � s r[ c @ sZ e Zd ZdZdZi ZdgZddd�Zdd� Zd d � Z d d � Z dd d�Z dd� Z dd� Z dS )r a� 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. When creating a breakpoint, its associated filename should be in canonical form. If funcname is defined, a breakpoint hit will be counted when the first line of that function is executed. A conditional breakpoint always counts a hit. r NFc C s� || _ d | _|| _|| _|| _|| _d| _d| _d| _t j | _ t j d7 _ | j � | � ||f| jkr|| j||f � | � n| g| j||f< d S )NTr r )rb �func_first_executable_linerl r% rK ra �enabled�ignore�hitsr �nextrJ rp r` re )r rl r% rK ra rb r r r r � s zBreakpoint.__init__c C s> | j | jf}d| j| j< | j| �| � | j| s:| j|= dS )z�Delete the breakpoint from the list associated to a file:line. If it is the last breakpoint in that position, it also deletes the entry for the file:line. N)rl r% rp rJ re rf )r �indexr r r rh � s zBreakpoint.deleteMec C s d| _ dS )z Mark the breakpoint as enabled.TN)r� )r r r r �enable� s zBreakpoint.enablec C s d| _ dS )z Mark the breakpoint as disabled.FN)r� )r r r r �disable� s zBreakpoint.disablec C s" |dkrt j}t| �� |d� dS )z�Print the output of bpformat(). The optional out argument directs where the output is sent and defaults to standard output. N)rl )rX �stdoutr- �bpformat)r �outr r r �bpprint� s zBreakpoint.bpprintc C s� | j r d}nd}| jr |d }n|d }d| j|| j| jf }| jrT|d| jf 7 }| jrj|d| jf 7 }| jr�| jdkr�d }nd }|d | j|f 7 }|S ) z�Return a string with information about the breakpoint. The information includes the breakpoint number, temporary status, file:line position, break condition, number of times to ignore, and number of times hit. zdel zkeep zyes zno z %-4dbreakpoint %s at %s:%dz stop only if %sz ignore next %d hitsr r� � z" breakpoint already hit %d time%s)rK r� rJ rl r% ra r� r� )r ZdispZretZssr r r r� � s$ zBreakpoint.bpformatc C s d| j | j| jf S )z1Return a condensed description of the breakpoint.zbreakpoint %s at %s:%s)rJ rl r% )r r r r �__str__� s zBreakpoint.__str__)FNN)N)r r r r r� re rp r rh r� r� r� r� r� r r r r r � s c C sN | j s| j|jkrdS dS |jj| j kr,dS | js:|j| _| j|jkrJdS dS )aV Return True if break should happen here. Whether a break should happen depends on the way that b (the breakpoint) was set. If it was set via line number, check if b.line is the same as the one in the frame. If it was set via function name, check if this is the right function and if it is on the first executable line. FT)rb r% rF r7 r� r� )�br/ r r r � checkfuncname� s r� c C s� t j| |f }x�|D ]�}|js qt||�s,q| jd7 _|jsf|jdkr\| jd8 _qq�|dfS qy<t|j|j|j �}|r�|jdkr�| jd8 _n|dfS W q |dfS qW dS )aE Determine which breakpoint for this file:line is to be acted upon. Called only if we know there is a breakpoint at this location. Return the breakpoint that was triggered and a boolean that indicates if it is ok to delete a temporary breakpoint. Return (None, None) if there is no matching breakpoint. r r TF)NN) r re r� r� r� ra r� r� rE r� )rl r% r/ Z possiblesr� �valr r r rI s* rI c @ s, e Zd Zdd� Zdd� Zdd� Zdd� Zd S ) �Tdbc C s |j j}|sd}td||� d S )Nz???z+++ call)r7 r� r- )r r/ r� �namer r r r: N s z Tdb.user_callc C sT dd l }|jj}|sd}| �|jj�}|�||j|j�}td||j|d|� � � d S )Nr z???z+++�:) r r7 r� r rG r^ rF rE r- r� )r r/ r r� �fnr% r r r r3 R s z Tdb.user_linec C s t d|� d S )Nz +++ return)r- )r r/ Zretvalr r r r< Y s zTdb.user_returnc C s t d|� | �� d S )Nz +++ exception)r- r\ )r r/ Z exc_stuffr r r r@ [ s zTdb.user_exceptionN)r r r r: r3 r< r@ r r r r r� M s r� c C s& t d| d� t| d �}t d|� d S )Nzfoo(�)� z bar returned)r- �bar)�n�xr r r �foo_ s r� c C s t d| d� | d S )Nzbar(r� r> )r- )�ar r r r� d s r� c C s t � } | �d� d S )Nzimport bdb; bdb.foo(10))r� r� )r r r r �testh s r� )r rB rX r �inspectr r r �__all__r9 � Exceptionr r r[ r r� rI r� r� r� r� r r r r �<module> s( ut"0
Save File
Cancel