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dis.cpython-34.pyc
� e fC � @ s` d Z d d l Z d d l Z d d l Z d d l Z d d l Td d l m Z d d d d d d d d d d d g e Z [ e j e j e j e f Z d d � Z d d d d d �Z d d d d d �Z i d d 6d d 6d d 6d d 6d d 6d d 6d! d" 6Z d# d$ � Z d% d& � Z d' d � Z d( d) � Z d d d* d � Z e j d+ d, � Z Gd- d � d e � Z d. d d/ d � Z d0 d1 � Z d2 d3 � Z d d d d d d d4 d5 � Z dB d d d6 d �Z dC d d d d d d d d7 d d8 d9 �Z d d d: d; � Z e Z d< d � Z! d= d � Z" Gd> d � d � Z# d? d@ � Z$ e% dA k r\e$ � n d S)Dz0Disassembler of Python byte code into mnemonics.� N)�*)�__all__� code_info�dis� disassemble�distb�disco�findlinestarts� findlabels� show_code�get_instructions� Instruction�Bytecodec C sA y t | | d � } Wn$ t k r< t | | d � } Yn X| S)z�Attempts to compile the given source, first as an expression and then as a statement if the first approach fails. Utility function to accept strings in functions that otherwise expect code objects �eval�exec)�compile� SyntaxError)�source�name�c� r �(/opt/alt/python34/lib64/python3.4/dis.py� _try_compile s r �filec C s� | d k r t d | � d St | d � r8 | j } n t | d � rS | j } n t | d � rt | j j � � } x | D]� \ } } t | t � r~ t d | d | �y t | d | �Wn8 t k r� } z t d | d | �WYd d } ~ Xn Xt d | � q~ q~ Wn� t | d � r5t | d | �nc t | t t f � r]t | d | �n; t | t � rt | d | �n t d t | � j � � d S) znDisassemble classes, methods, functions, or code. With no argument, disassemble the last traceback. Nr �__func__�__code__�__dict__zDisassembly of %s:zSorry:�co_codez(don't know how to disassemble %s objects)r �hasattrr r �sortedr �items� isinstance� _have_code�printr � TypeErrorr �bytes� bytearray�_disassemble_bytes�str�_disassemble_str�type�__name__)�xr r r Zx1�msgr r r r s2 &c C sv | d k rV y t j } Wn t k r9 t d � � Yn Xx | j rR | j } q= Wn t | j j | j d | �d S)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 @ s Z OPTIMIZED� Z NEWLOCALS� ZVARARGS� Z VARKEYWORDS� ZNESTED� Z GENERATOR� ZNOFREE�@ c C s� g } xq t d � D]P } d | >} | | @r | j t j | t | � � � | | N} | sc Pqc q q W| j t | � � d j | � S)z+Return pretty representation of code flags.r< r7 z, )�range�append�COMPILER_FLAG_NAMES�get�hex�join)�flags�names�iZflagr r r � pretty_flagsW s rG c C s� t | d � r | j } n t | d � r6 | j } n t | t � rW t | d � } n t | d � rj | St d t | � j � � d S)zAHelper to handle methods, functions, strings and raw code objectsr r z <disassembly>r z(don't know how to disassemble %s objectsN) r r r r! r( r r$ r* r+ )r, r r r �_get_code_objecte s rH c C s t t | � � S)z1Formatted details of methods, functions, or code.)�_format_code_inforH )r, r r r r r s c C s� g } | j d | j � | j d | j � | j d | j � | j d | j � | j d | j � | j d | j � | j d t | j � � | j r� | j d � x+ t | j � D] } | j d | � q� Wn | j r | j d � x+ t | j � D] } | j d | � qWn | j rd| j d � x+ t | j � D] } | j d | � qFWn | j r�| j d � x+ t | j � D] } | j d | � q�Wn | j r�| j d � x+ t | j � D] } | j d | � q�Wn d j | � S)NzName: %szFilename: %szArgument count: %szKw-only arguments: %szNumber of locals: %szStack size: %szFlags: %sz Constants:z%4d: %rzNames:z%4d: %szVariable names:zFree variables:zCell variables:� )r? �co_name� co_filename� co_argcount�co_kwonlyargcount� co_nlocals� co_stacksizerG �co_flags� co_consts� enumerate�co_names� co_varnames� co_freevars� co_cellvarsrC )�co�linesZi_cZi_nr r r rI v s: rI c C s t t | � d | �d S)z}Print details of methods, functions, or code to *file*. If *file* is not provided, the output is printed on stdout. r N)r# r )rX r r r r r � s � _InstructionzBopname opcode arg argval argrepr offset starts_line is_jump_targetc @ s( e Z d Z d Z d d d d � Z d S)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 � Fc C s9 g } | rP | j d k r< d | } | j | | j � qP | j d | � n | rf | j d � n | j d � | j r� | j d � n | j d � | j t | j � j d � � | j | j j d � � | j d k r&| j t | j � j d � � | j r&| j d | j d � q&n d j | � j � S) z�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 Nz%%%dd� z-->z z>>z r9 � � �(�)) � starts_liner? �is_jump_target�repr�offset�rjust�opname�ljust�arg�argreprrC �rstrip)�self� lineno_widthZmark_as_currentZfieldsZ lineno_fmtr r r � _disassemble� s& zInstruction._disassembleN)r+ � __module__� __qualname__�__doc__rm r r r r r � s � first_linec C sx t | � } | j | j } t t | � � } | d k rJ | | j } n d } 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. If *first_line* is not None, it indicates the line number that should be reported for the first source line in the disassembled code. Otherwise, the source line information (if any) is taken directly from the disassembled code object. Nr ) rH rW rV �dictr �co_firstlineno�_get_instructions_bytesr rU rT rR )r, rq rX � cell_names� linestarts� line_offsetr r r r � s c C s/ | } | d k r | | } n | t | � f S)z�Helper to get optional details about const references Returns the dereferenced constant and its repr if the constant list is defined. Otherwise returns the constant index and its repr(). N)rc )Z const_indexZ const_list�argvalr r r �_get_const_info� s ry c C s; | } | d k r% | | } | } n t | � } | | f S)z�Helper to get optional details about named references Returns the dereferenced name as both value and repr if the name list is defined. Otherwise returns the name index and its repr(). N)rc )Z name_indexZ name_listrx ri r r r �_get_name_info� s rz c c s@ t | � } d } d } d } t | � } d } x | | k r;| | } | } | d k r� | j | d � } | d k r� | | 7} q� n | | k } | d } d } d } d } | t k r| | | | d d | } d } | d } | t k r| d } n | } | t k r.t | | � \ } } q| t k rRt | | � \ } } q| t k r{| | } d t | � } q| t k r�t | | � \ } } q| t k r�t | } | } q| t k r�t | | � \ } } q| t k rd | | d | | d f } qn t t | | | | | | | | � Vq3 Wd S) 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. r Nr7 � � r8 i zto z %d positional, %d keyword pair)r �lenrA � HAVE_ARGUMENTZ EXTENDED_ARGZhasconstry Zhasnamerz �hasjrelrc ZhaslocalZ hascompareZcmp_opZhasfreeZhasnargsr rf )�code�varnamesrE � constants�cellsrv rw �labelsZ extended_argra Zfree�nrF �oprd rb rh rx ri r r r rt sX & rt c C sT | j | j } t t | � � } t | j | | j | j | j | | d | �d S)zDisassemble a code object.r N) rW rV rr r r' r rU rT rR )rX �lastir ru rv r r r r A s rw c C s� | d k } | r d n d } x� t | | | | | | d | �D]k } | og | j d k og | j d k } | r� t d | � n | j | k } t | j | | � d | �q@ Wd S)Nr[ r rw r )rt ra rd r# rm )r� r� r� rE r� r� rv r rw Z show_linenorl ZinstrZnew_source_lineZis_current_instrr r r r' H s r' c C s t t | d � d | �d S)z<Compile the source string, then disassemble the code object.z<dis>r N)r r )r r r r r r) Z s r) c C s� g } t | � } d } x� | | k r� | | } | d } | t k r | | | | d d } | d } d } | t k r� | | } n | t k r� | } n | d k r� | | k r� | j | � q� q� q q W| S)z`Detect all offsets in a byte code which are jump targets. Return the list of offsets. r r7 r| r8 ���)r} r~ r Zhasjabsr? )r� r� r� rF r� rh Zlabelr r r r ` s$ c c s� t | j d d d � � } t | j d d d � � } d } | j } d } xZ t | | � D]I \ } } | r� | | k r� | | f V| } n | | 7} n | | 7} q] W| | k r� | | f Vn d S)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 Nr8 r7 )�list� co_lnotabrs �zip)r� Zbyte_incrementsZline_incrementsZ lastlineno�linenoZaddrZ byte_incrZ line_incrr r r r { s c @ sp e Z d Z d Z d d d d d d � Z d d � Z d d � Z e d d � � Z d d � Z d d � Z d S)r z�The bytecode operations of a piece of code Instantiate this with a function, method, string of code, or a code object (as returned by compile()). Iterating over this yields the bytecode operations as Instruction instances. rq N�current_offsetc C s� t | � | _ } | d k r7 | j | _ d | _ n | | _ | | j | _ | j | j | _ t t | � � | _ | | _ | | _ d S)Nr ) rH �codeobjrs rq � _line_offsetrW rV � _cell_namesrr r � _linestarts�_original_objectr� )rk r, rq r� rX r r r �__init__� s zBytecode.__init__c C s= | j } t | j | j | j | j | j | j d | j �S)Nrw ) r� rt r rU rT rR r� r� r� )rk rX r r r �__iter__� s zBytecode.__iter__c C s d j | j j | j � S)Nz{}({!r}))�format� __class__r+ r� )rk r r r �__repr__� s zBytecode.__repr__c C s2 x | j r | j } q W| | j j d | j �S)z/ Construct a Bytecode from the given traceback r� )r2 r3 r4 r5 )�clsr6 r r r �from_traceback� s zBytecode.from_tracebackc C s t | j � S)z3Return formatted information about the code object.)rI r� )rk r r r �info� s z Bytecode.infoc C s� | j } | j d k r$ | j } n d } t j � �` } t | j d | j d | j d | j d | j d | j d | j d | d | �| j � SWd QXd S) z3Return a formatted view of the bytecode operations.Nr7 r� rE r� r� rv rw r r� r� ) r� r� �io�StringIOr' r rU rT rR r� r� r� �getvalue)rk rX rd �outputr r r r � s z Bytecode.dis) r+ rn ro rp r� r� r� � classmethodr� r� r r r r r r � s c C s� d d l } | j � } | j d d | j � d d d d �| j � } | j � } | j � } Wd QXt | | j j d � } t | � d S) z*Simple test program to disassemble a file.r N�infiler* �nargs�?�default�-r ) �argparse�ArgumentParser� add_argumentZFileType� parse_argsr� �readr r r )r� �parser�argsr� r r� r r r �_test� s % r� �__main__r� r� )&rp r. �types� collectionsr� Zopcoder Z _opcodes_all� MethodType� FunctionType�CodeTyper* r" r r r r@ rG rH r rI r � namedtuplerZ r r ry rz rt r r' r) r r r r r� r+ r r r r �<module> s^ ! 3 < =