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� Zdd� ZG dd� de �Zdd� Zdd� Zdd� ZdS )zDebugger basics� N)� CO_GENERATOR� CO_COROUTINE�CO_ASYNC_GENERATOR�BdbQuit�Bdb�
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s c @ sp e Zd ZdZdZdd�Zdd� Zdd� Zd d
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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.
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�__init__ s z Bdb.__init__c C sR |d|dd� d kr |S | j �|�}|sNtj�|�}tj�|�}|| j |< |S )a$ Return canonical form of filename.
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aO Dispatch a trace function for debugged frames based on the event.
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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_*()
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zBdb.trace_dispatchc C s. | � |�s| �|�r(| �|� | jr(t�| jS )a Invoke user function and return trace function for line event.
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zBdb.dispatch_linec C sd | j dkr|j| _ | jS | �|�s0| �|�s0dS | jrH|jjt@ rH| jS | � ||� | j
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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
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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.
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Nr )
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S )a Invoke user function and return trace function for exception event.
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�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
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t |j�� dS dS dS )z�Return True if there is an effective breakpoint for this line.
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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
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r< s zBdb.user_returnc C s dS )z$Called when we stop on an exception.Nr )r r/ �exc_infor r r
r@ s zBdb.user_exceptionr c C s || _ || _d| _|| _dS )z�Set the attributes for stopping.
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r# s zBdb._set_stopinfoc C s$ |dkr|j d }| �|||� dS )zxStop when the line with the lineno greater than the current one is
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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
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N) �sys� _getframer4 r$ r, rT r" rU �settrace)r r/ r r r
� set_trace? s
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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.
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zBdb.set_continuec C s" | j | _d| _d| _t�d� dS )zuSet quitting attribute to True.
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NT)r" r6 r; r' rX rZ )r r r r
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C sb | � |�}ddl}|�||�}|s.d||f S | j�|g �}||krN|�|� t|||||�} dS )z�Set a new breakpoint for filename:lineno.
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Bdb.set_breakc C s4 ||ft jkr | j| �|� | j| s0| j|= dS )a Prune breakpoints for filname:lineno.
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longer exists in the Breakpoint class, then it's removed from the
Bdb instance.
N)r �bplistr �remove)r r rN r r r
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zBdb._prune_breaksc C sn | � |�}|| jkr d| S || j| kr6d||f S x&tj||f dd� D ] }|�� qNW | �||� dS )znDelete breakpoints for filename:lineno.
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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
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�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.
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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
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rl t d| �d�Y nX |dkr�t d| ��|S )z�Return a breakpoint by its index in Breakpoint.bybpnumber.
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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
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Bdb.get_breakc C s4 | � |�}|| jkr0|| j| kr0tj||f p2g S )znReturn all breakpoints for filename:lineno.
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zBdb.get_breaksc C s& | � |�}|| jkr | j| S g S dS )zrReturn all lines with breakpoints for filename.
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N)r r )r r r r r
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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.
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Nr r )
�tb_frame�tb_nextr` rF r" r4 �reverse�max�len� tb_lineno)r �f�t�stack�ir r r
� get_stack� s
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|
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� 7 }|S )a: Return a string with information about a stack entry.
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or '<lambda>', the input arguments, the return value, and the
line of code (if it exists).
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__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
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zBdb.format_stack_entryc C s� |dkrddl }|j}|dkr"|}| �� t|t�r@t|dd�}t�| j� z*yt |||� W n t
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rr Y nX W dd| _ t�d� X dS )z�Debug a statement executed via the exec() function.
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r� Y nX W dd|_t�d� X |S )zWDebug a single function call.
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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
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dS )r a� Breakpoint class.
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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.
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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.
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d| _ dS )z Mark the breakpoint as enabled.TN)r� )r r r r
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�disable� s zBreakpoint.disablec C s" |dkrt j}t| �� |d� dS )z�Print the output of bpformat().
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�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
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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.
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