YfC @ st 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 e e
f Z d d Z d d d d d Z d d d d d Z d d d d d d d d d d d d d! d" d# d$ d% d& i Z d' d( Z d) d* Z d+ d Z d, d- Z d d d. d Z e j d/ d0 Z Gd1 d d e Z d2 d d3 d
Z d4 d5 Z d6 d7 Z d d d d d d d8 d9 Z dH d d d: d Z dI d d d d d d d d; d d< d= Z d d d> d? Z! e Z" d@ dA Z# dB d Z$ dC d
Z% GdD d d Z& dE dF Z' e( dG k rpe' d S)Jz0Disassembler of Python byte code into mnemonics. N)*)__all__ code_infodis disassembledistbdiscofindlinestarts
findlabels show_codeget_instructions InstructionBytecodec C sA y t | | d } Wn$ t k
r< t | | d } Yn X| S)zAttempts 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
evalexec)compile SyntaxError)sourcenamec r (/opt/alt/python35/lib64/python3.5/dis.py _try_compile s
r filec C s | d k r t d | d St | d r5 | j } t | d rM | j } t | d re | j } t | d r"t | 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 Wn t | d rDt
| d | nc t | t t f rlt | d | n; t | t rt | d | n t d
t | j d S) zzDisassemble classes, methods, functions, generators, or code.
With no argument, disassemble the last traceback.
Nr __func____code__gi_code__dict__zDisassembly of %s:zSorry:co_codez(don't know how to disassemble %s objects)r hasattrr r r sortedr items
isinstance
_have_codeprintr TypeErrorr bytes bytearray_disassemble_bytesstr_disassemble_strtype__name__)xr r! r Zx1msgr r r r s6
&c
C ss | d k rS y
t j } Wn t k
r9 t d Yn Xx | j rR | j } q= Wt | j j | j d | d S)z2Disassemble a traceback (default: last traceback).Nz no last traceback to disassembler ) syslast_tracebackAttributeError RuntimeErrortb_nextr tb_framef_codetb_lasti)tbr r r r r C s
Z OPTIMIZED Z NEWLOCALS ZVARARGS Z VARKEYWORDS ZNESTED Z GENERATOR@ ZNOFREE Z COROUTINE ZITERABLE_COROUTINEc C s g } xk t d D]J } d | >} | | @r | j t j | t | | | N} | s Pq W| j t | d j | S)z+Return pretty representation of code flags.r= r8 z, )rangeappendCOMPILER_FLAG_NAMESgethexjoin)flagsnamesiZflagr r r pretty_flags\ s
rJ c C s t | d r | j } t | d r0 | j } t | d rH | j } t | t rf t | d } t | d ry | St d t | j d S)zMHelper to handle methods, functions, generators, strings and raw code objectsr r r z
r z(don't know how to disassemble %s objectsN)
r r r r r" r) r r% r+ r, )r- r r r _get_code_objectj s rK c C s t t | S)z1Formatted details of methods, functions, or code.)_format_code_inforK )r- r r r r y 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 W| j r| j d
x( t
| j D] } | j d | q W| j r[| j d x( t
| j D] } | j d | q@W| j
r| j d
x( t
| j
D] } | j d | qW| j r| j d x( t
| j D] } | j d | qWd 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:
)rB co_name co_filename co_argcountco_kwonlyargcount
co_nlocals co_stacksizerJ co_flags co_consts enumerateco_names co_varnames co_freevars co_cellvarsrF )colinesZi_cZi_nr r r rL } s:
rL 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 )r[ 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 s0 g } | rM | j d k r< d | } | j | | j n | j d | | rc | 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 d j
| j S)
zFormat 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 r: ()) starts_linerB is_jump_targetreproffsetrjustopnameljustargargreprrF rstrip)self lineno_widthZmark_as_currentZfieldsZ
lineno_fmtr r r _disassemble s&
zInstruction._disassembleN)r,
__module__ __qualname____doc__rp 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 ) rK rZ rY dictr co_firstlineno_get_instructions_bytesr rX rW rU )r- rt r[
cell_names
linestarts line_offsetr r r r s c C s, | } | d k r | | } | t | f S)zHelper 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)rf )Z const_indexZ
const_listargvalr r r _get_const_info s
r| c C s; | } | d k r% | | } | } n t | } | | f S)zHelper 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)rf )Z
name_indexZ name_listr{ rl r r r _get_name_info s
r} c
c s t | } d } d } xt | D]\ }
} } | d k rh | j |
d } | d k rh | | 7} |
| k }
d } d } | d k r| } | t k r t | | \ } } n | t k r t | | \ } } n | t k r|
d | } d t | } n | t k r+t | | \ } } ng | t
k rJt | } | } nH | t k rnt | | \ } } n$ | t
k rd | d | d f } t t | | | | | |
| |
Vq% 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.
N r^ zto z %d positional, %d keyword pairr@ )r
_unpack_opargsrD Zhasconstr| Zhasnamer} hasjrelrf ZhaslocalZ
hascompareZcmp_opZhasfreeZhasnargsr
ri )codevarnamesrH constantscellsry rz labelsrd Zfreerg oprk re r{ rl r r r rw s@
rw c
C sT | j | j } t t | } t | j | | j | j | j | | d | d S)zDisassemble a code object.r N) rZ rY ru r r( r rX rW rU )r[ lastir rx ry r r r r : s rz c C s | d k } | r d n d }
x t | | | | | | d | D]h } | og | j d k og | j d k } | r} t d | | j | k }
t | j |
|
d | q@ Wd S)Nr^ r rz r )rw rd rg r$ rp )r r r rH r r ry r rz Z show_linenoro ZinstrZnew_source_lineZis_current_instrr r r r( A s
r( c C s t t | d d | d S)zr N)r r )r r r r r r* S s r* c c s d } t | } d } x | | k r | | } | } | d } d } | t k r | | | | d d | } d } | d } | t k r | d } | | | f Vq Wd S)Nr r8 r@ r9 i )lenZ
HAVE_ARGUMENTZ EXTENDED_ARG)r Z extended_argnrI r rg rk r r r r Y s
r c C s g } x t | D]u \ } } } | d k r d } | t k rQ | d | } n | t k rc | } | d k r | | k r | j | q W| S)z`Detect all offsets in a byte code which are jump targets.
Return the list of offsets.
Nr8 r^ r )r r ZhasjabsrB )r r rg r rk Zlabelr r r r
l s c c s t | j d d d } t | j d d d } d } | j } d } xT t | | D]C \ } } | r | | k r | | f V| } | | 7} | | 7} q] W| | k r | | f Vd S)zFind 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 Nr9 r8 )list co_lnotabrv zip)r Zbyte_incrementsZline_incrementsZ
lastlinenolinenoZaddrZ 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 zThe 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.
rt Ncurrent_offsetc C s t | | _ } | d k r7 | j | _ d | _ n | | _ | | j | _ | j | j | _ t t | | _
| | _ | | _ d S)Nr )
rK codeobjrv rt _line_offsetrZ rY _cell_namesru r _linestarts_original_objectr )rn r- rt r r[ r r r __init__ s zBytecode.__init__c C s= | j } t | j | j | j | j | j | j d | j S)Nrz ) r rw r rX rW rU r r r )rn r[ r r r __iter__ s
zBytecode.__iter__c C s d j | j j | j S)Nz{}({!r}))format __class__r, r )rn 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 )r3 r4 r5 r6 )clsr7 r r r from_traceback s
zBytecode.from_tracebackc C s
t | j S)z3Return formatted information about the code object.)rL r )rn 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 QRXd S) z3Return a formatted view of the bytecode operations.Nr8 r rH r r ry rz r r r )
r r ioStringIOr( r rX rW rU r r r getvalue)rn r[ rg outputr r r r s z Bytecode.dis) r, rq rr rs 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 QRXt | | j j d } t | d S)
z*Simple test program to disassemble a file.r Ninfiler+ nargs?default-r )
argparseArgumentParser add_argumentZFileType
parse_argsr readr r r )r parserargsr r r r r r _test s % r __main__r r ))rs r/ types collectionsr Zopcoder Z _opcodes_all
MethodType FunctionTypeCodeTyper staticmethodr+ r# r r r rC rJ rK r rL r
namedtupler] r
r r| r} rw r r( r* r r r
r r r r, r r r r sd
# 3 . =