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U �SSVCD � @ s d Z ddlZddlZddlZddlZddlT ddlmZ ddddd d d d d ddg e Z[ejej ej e e e fZed ZdedfedfedffZed ZdZdd� ZdVddd�dd�ZdWdd�d d�Zd d d d d!d"d#d$d%d&d'� Zd(d)� Zd*d+� Z d,d� Z d-d.� Z dd�d/d �Z e� d0d1�Z!d2e!j"_ d3e!j_ d4e!j#_ d5e!j$_ d6e!j%_ d7e!j&_ d8e!j'_ d9e!j(_ d:Z)d;Z*G d<d� de!�Z+dd=�d>d �Z,d?d@� Z-dAdB� Z.dXdCdD�Z/dYdd�dFd�Z0ddd�dGdH�Z1dZdddI�dJdK�Z2dLdM� Z3e0Z4dNdO� Z5dPd � Z6dQd � Z7G dRd� d�Z8dSdT� Z9e:dUk�re9� dS )[z0Disassembler of Python byte code into mnemonics.� N)�*)�__all__� code_info�dis� disassemble�distb�disco�findlinestarts� findlabels� show_code�get_instructions� Instruction�Bytecode� FORMAT_VALUE)N� �str�repr�ascii� MAKE_FUNCTION)�defaultsZ kwdefaultsZ annotationsZclosurec C s6 zt | |d�}W n tk r0 t | |d�}Y nX |S )z�Attempts to compile the given source, first as an expression and then as a statement if the first approach fails. 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N�r! �__func__�__code__�gi_code�ag_code�cr_code�__dict__zDisassembly of %s:r zSorry:�co_code�(don't know how to disassemble %s objects)r �hasattrr$ r% r& r' r( �sortedr) �items� isinstance� _have_code�printr � TypeError�_disassemble_recursive�bytes� bytearray�_disassemble_bytesr �_disassemble_str�type�__name__)�xr! r" r. r Zx1�msgr r r r + s@ �r# c C sX | dkr@z t j} W n tk r0 td�d�Y nX | jr@| j} q2t| jj| j|d� dS )z2Disassemble a traceback (default: last traceback).Nz no last traceback to disassembler# ) �sys�last_traceback�AttributeError� RuntimeError�tb_nextr �tb_frame�f_code�tb_lasti)�tbr! r r r r X s Z OPTIMIZEDZ NEWLOCALSZVARARGSZ VARKEYWORDSZNESTEDZ GENERATORZNOFREEZ COROUTINEZITERABLE_COROUTINEZASYNC_GENERATOR) � � � � � � �@ � � i c C s` g }t d�D ]:}d|> }| |@ r |�t�|t|��� | |N } | s qVq |�t| �� d�|�S )z+Return pretty representation of code flags.rJ rE �, )�range�append�COMPILER_FLAG_NAMES�get�hex�join)�flags�names�i�flagr r r � pretty_flagsr s rY c C s� t | d�r| j} t | d�r"| j} n4t | d�r4| j} n"t | d�rF| j} nt | d�rV| j} t| t�rjt| d�} t | d�rx| S t dt | �j ��d S ) zDHelper to handle methods, compiled or raw code objects, and strings.r$ r% r& r' r( z <disassembly>r* r+ N) r, r$ r% r& r' r( r/ r r r2 r8 r9 �r: r r r �_get_code_object� s" �r[ c C s t t| ��S )z1Formatted details of methods, functions, or code.)�_format_code_infor[ rZ r r r r � s c C s� g }|� d| j � |� d| j � |� d| j � |� d| j � |� d| j � |� d| j � |� d| j � |� dt| j � � | j r�|� d � t | j �D ]}|� d | � q�| j r�|� d � t | j �D ]}|� d | � q�| j �r|� d � t | j �D ]}|� d | � �q | j�rH|� d� t | j�D ]}|� d | � �q2| j�rz|� d� t | j�D ]}|� d | � �qdd�|�S )NzName: %szFilename: %szArgument count: %sz Positional-only arguments: %szKw-only arguments: %szNumber of locals: %szStack size: %szFlags: %sz Constants:z%4d: %rzNames:z%4d: %szVariable names:zFree variables:zCell variables:� )rP �co_name� co_filename� co_argcount�co_posonlyargcount�co_kwonlyargcount� co_nlocals� co_stacksizerY �co_flags� co_consts� enumerate�co_names� co_varnames� co_freevars� co_cellvarsrT )�co�linesZi_cZi_nr r r r\ � s< r\ c C s t t| �|d� dS )z}Print details of methods, functions, or code to *file*. If *file* is not provided, the output is printed on stdout. r# N)r1 r )rl r! r r r r � s � _InstructionzBopname opcode arg argval argrepr offset starts_line is_jump_targetz!Human readable name for operationzNumeric code for operationz6Numeric argument to operation (if any), otherwise Nonez4Resolved arg value (if known), otherwise same as argz0Human readable description of operation argumentz1Start index of operation within bytecode sequencez4Line started by this opcode (if any), otherwise Nonez1True if other code jumps to here, otherwise False� � c @ s e Zd ZdZddd�ZdS ) r aK Details for a bytecode operation Defined fields: opname - human readable name for operation opcode - numeric code for operation arg - numeric argument to operation (if any), otherwise None argval - resolved arg value (if known), otherwise same as arg argrepr - human readable description of operation argument offset - start index of operation within bytecode sequence starts_line - line started by this opcode (if any), otherwise None is_jump_target - True if other code jumps to here, otherwise False � FrG c C s� g }|r:| j dk r,d| }|�|| j � n|�d| � |rJ|�d� n |�d� | jrf|�d� n |�d� |�t| j��|�� |�| j�t�� | j dk r�|�t| j ��t �� | j r�|�d| j d � d� |�� � S ) a% Format instruction details for inclusion in disassembly output *lineno_width* sets the width of the line number field (0 omits it) *mark_as_current* inserts a '-->' marker arrow as part of the line *offset_width* sets the width of the instruction offset field Nz%%%dd� z-->z z>>z �(�))� starts_linerP �is_jump_targetr �offset�rjust�opname�ljust� _OPNAME_WIDTH�arg� _OPARG_WIDTH�argreprrT �rstrip)�self� lineno_widthZmark_as_current� offset_width�fieldsZ lineno_fmtr r r � _disassemble� s& zInstruction._disassembleN)rq FrG )r9 � __module__� __qualname__�__doc__r� r r r r r � s )� first_linec C sT t | �}|j|j }tt|��}|dk r4||j }nd}t|j|j|j |j |||�S )a� Iterator for the opcodes in methods, functions or code Generates a series of Instruction named tuples giving the details of each operations in the supplied code. 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Nr� )Z name_indexZ name_listr� r~ r r r �_get_name_info' s r� c # s� t | �}d}t| �D �]r\} } � |dk rD|�| d�}|dk rD||7 }| |k} d} d} � dk �rl� } | tkrzt� |�\} } n�| tkr�t� |�\} } n�| tkr�| d � } dt| � } n�| t kr�t� |�\} } n�| t kr�t � } | } n�| t kr�t� |�\} } nr| t k�rFt� d@ \} } | t� d@ �f} | d �rl| �r<| d7 } | d 7 } n&| tk�rld�� fd d �tt�D ��} tt| | � | | | || �V qdS ) a& Iterate over the instructions in a bytecode string. Generates a sequence of Instruction namedtuples giving the details of each opcode. Additional information about the code's runtime environment (e.g. variable names, constants) can be specified using optional arguments. Nr rF zto rq rG rE rN z with formatc 3 s" | ]\}}� d |> @ r|V qdS )rE Nr )�.0rW �s�r| r r � <genexpr>g s �z*_get_instructions_bytes.<locals>.<genexpr>)r �_unpack_opargsrR Zhasconstr� Zhasnamer� �hasjrelr ZhaslocalZ hascompareZcmp_opZhasfreer �FORMAT_VALUE_CONVERTERS�boolr rT rg �MAKE_FUNCTION_FLAGSr ry )�code�varnamesrV � constants�cellsr� r� �labelsru rw �oprv r� r~ r r� r r� 7 sV �r� ���c C s< | j | j }tt| ��}t| j|| j| j| j|||d� dS )zDisassemble a code object.r# N) rk rj r� r r6 r* ri rh rf )rl �lastir! r� r� r r r r m s �c C sp t | |d� |d ks |dkrl|d k r,|d }| jD ]8}t|d�r2t|d� td|f |d� t|||d� q2d S )Nr# r rE r* zDisassembly of %r:r )r rf r, r1 r3 )rl r! r" r: r r r r3 t s r3 )r! r� c C s� |d k } | r8t |�� �| } | dkr2tt| ��} q<d} nd} t| �d } | dkr^tt| ��} nd} t| ||||||d�D ]J}| o�|jd k o�|jdk}|r�t|d� |j|k}t|�| || �|d� qxd S ) Ni� rq r rF i' rG �r� r# ) �max�values�lenr r� ru rw r1 r� )r� r� r� rV r� r� r� r! r� Z show_linenoZ maxlinenor� Z maxoffsetr� ZinstrZnew_source_lineZis_current_instrr r r r6 s8 � �� �r6 c K s t t| d�f|� dS )z<Compile the source string, then disassemble the code object.z<dis>N)r3 r )r �kwargsr r r r7 � s r7 c c sd d}t dt| �d�D ]J}| | }|tkrN| |d |B }|tkrH|d> nd}nd }|||fV qd S )Nr rF rE rH )rO r� Z HAVE_ARGUMENTZ EXTENDED_ARG)r� Z extended_argrW r� r| r r r r� � s r� c C s\ g }t | �D ]J\}}}|dk r |tkr4|d | }n|tkr |}nq ||kr |�|� q |S )z`Detect all offsets in a byte code which are jump targets. Return the list of offsets. NrF )r� r� ZhasjabsrP )r� r� rw r� r| Zlabelr r r r � s c c s� | j ddd� }| j ddd� }t| j�}d}| j}d}t||�D ]P\}}|rz||krd||fV |}||7 }||krz dS |dkr�|d8 }||7 }qB||kr�||fV dS )z�Find the offsets in a byte code which are start of lines in the source. Generate pairs (offset, lineno) as described in Python/compile.c. r NrF rE rL rM )� co_lnotabr� r* r� �zip) r� Zbyte_incrementsZline_incrementsZ bytecode_lenZ lastlineno�lineno�addrZ byte_incrZ line_incrr r r r � s& c @ sL e Zd ZdZddd�dd�Zdd� Zdd � Zed d � �Zd d � Z dd� Z dS )r a The bytecode operations of a piece of code Instantiate this with a function, method, other compiled object, string of code, or a code object (as returned by compile()). Iterating over this yields the bytecode operations as Instruction instances. N)r� �current_offsetc C sd t |� | _}|d kr&|j| _d| _n|| _||j | _|j|j | _tt |��| _ || _ || _ d S )Nr ) r[ �codeobjr� r� � _line_offsetrk rj � _cell_namesr� r � _linestarts�_original_objectr� )r� r: r� r� rl r r r �__init__� s zBytecode.__init__c C s* | j }t|j|j|j|j| j| j| jd�S )Nr� ) r� r� r* ri rh rf r� r� r� )r� rl r r r �__iter__� s �zBytecode.__iter__c C s d� | jj| j�S )Nz{}({!r}))�format� __class__r9 r� �r� r r r �__repr__� s �zBytecode.__repr__c C s |j r|j }q | |jj|jd�S )z/ Construct a Bytecode from the given traceback )r� )r@ rA rB rC )�clsrD r r r �from_traceback� s zBytecode.from_tracebackc C s t | j�S )z3Return formatted information about the code object.)r\ r� r� r r r �info s z Bytecode.infoc C sl | j }| jdk r| j}nd}t�� �>}t|j|j|j|j| j | j | j ||d� |� � W 5 Q R � S Q R X dS )z3Return a formatted view of the bytecode operations.Nr� )r� rV r� r� r� r� r! r� ) r� r� �io�StringIOr6 r* ri rh rf r� r� r� �getvalue)r� rl rw �outputr r r r s �z Bytecode.dis) r9 r� r� r� r� r� r� � classmethodr� r� r r r r r r � s c C sd ddl } | �� }|jd| �� ddd� |�� }|j�}|�� }W 5 Q R X t||jjd�}t |� dS )z*Simple test program to disassemble a file.r N�infile�?�-)r8 �nargs�defaultr ) �argparse�ArgumentParser� add_argument�FileType� parse_argsr� �readr r r )r� �parser�argsr� r r� r r r �_test s r� �__main__)N)N)NNNNNr )r� )r� NNNNN);r� r< �types� collectionsr� Zopcoder Z _opcodes_all� MethodType� FunctionType�CodeTyper� � staticmethodr8 r0 Zopmapr r r r r� r r� r r r rQ rY r[ r r\ r � namedtuplern ry r| r� r~ rw ru rv r{ r} r r r� r� r� r r3 r6 r7 r r� r r r r� r9 r r r r �<module> s� �� �� -� �4 � 6 � � =