Your IP : 18.191.68.112
�
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 < =