View file File name : pyassem.pyc Content :� �bc @ s d Z d d l Z d d l Z d d l Z d d l m Z d d l m Z m Z m Z m Z d f d � � YZ d � Z d f d � � YZ d Z d Z d Z d Z d e f d � � YZ d � Z d f d � � YZ d � Z d � Z d f d � � YZ d f d � � YZ e � j Z d S( s/ A flow graph representation for Python bytecodei����N( t misc( t CO_OPTIMIZEDt CO_NEWLOCALSt CO_VARARGSt CO_VARKEYWORDSt FlowGraphc B s} e Z d � Z d � Z d d � Z d � Z d � Z d Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z RS( c C s[ t � | _ | _ t d � | _ t j � | _ | j j | j � | j j | j � d S( Nt exit( t Blockt currentt entryR R t Sett blockst add( t self( ( s& /usr/lib/python2.7/compiler/pyassem.pyt __init__ s c C sr | j re | j rW d Gt | j � GHd G| j j GHd G| j j GHd G| j j � GHn t | � GHn | | _ d S( Nt ends nexts prevs ( t _debugR t reprt nextt prevt get_children( R t block( ( s& /usr/lib/python2.7/compiler/pyassem.pyt startBlock s c C s< | d k r | j � } n | j j | � | j | � d S( N( t Nonet newBlockR t addNextR ( R R ( ( s& /usr/lib/python2.7/compiler/pyassem.pyt nextBlock s c C s t � } | j j | � | S( N( R R R ( R t b( ( s& /usr/lib/python2.7/compiler/pyassem.pyR 5 s c C s | j | j � d S( N( R R ( R ( ( s& /usr/lib/python2.7/compiler/pyassem.pyt startExitBlock: s i c C s d | _ d S( Ni ( R ( R ( ( s& /usr/lib/python2.7/compiler/pyassem.pyt _enable_debug? s c C s d | _ d S( Ni ( R ( R ( ( s& /usr/lib/python2.7/compiler/pyassem.pyt _disable_debugB s c G se | j r d G| GHn t | � d k rQ t | d t � rQ | j j | d � n | j j | � d S( Ns i i ( R t lent isinstanceR R t addOutEdget emit( R t inst( ( s& /usr/lib/python2.7/compiler/pyassem.pyR" E s %c C s t | j | j � } | S( sl Return the blocks in reverse postorder i.e. each node appears before all of its successors ( t order_blocksR R ( R t order( ( s& /usr/lib/python2.7/compiler/pyassem.pyt getBlocksInOrderL s c C s | j j � S( N( R t elements( R ( ( s& /usr/lib/python2.7/compiler/pyassem.pyt getBlocksT s c C s | j S( s/ Return nodes appropriate for use with dominator( R ( R ( ( s& /usr/lib/python2.7/compiler/pyassem.pyt getRootW s c C s4 g } x' | j � D] } | j | j � � q W| S( N( R( t extendt getContainedGraphs( R t lR ( ( s& /usr/lib/python2.7/compiler/pyassem.pyR+ [ s N( t __name__t __module__R R R R R R R R R R" R& R( R) R+ ( ( ( s& /usr/lib/python2.7/compiler/pyassem.pyR s c s� g } t � � | g } xh | r� | j � } | � k r? q n � j | � x0 | j � D]" } | � k rY | j | � qY qY Wq Wi � x� � D]� } t r� | j r� | | j d j d k s� t | | j f � � n � j | t � � xd | j � D]V } xM � j | t � � j | � | j rH| j d | k rH| j d } q Pq Wq� Wq� W� � f d � } | } xv | j | � � j | � | j r�| j d } qpn) | | k r�| j � r�| j | � n � s�Pn | � } qpW| S( s8 Order blocks so that they are emitted in the right orderi c sP x7 � D]/ } x& � | D] } | � k r Pq q W| Sq Wd sL t d � � d S( Ni s+ circular dependency, cannot find next block( t AssertionError( R t c( t dominatorst remaining( s& /usr/lib/python2.7/compiler/pyassem.pyt find_next� s ( t sett popR R t appendt __debug__R R R/ t setdefaultt get_followerst discardt has_unconditional_transfer( t start_blockt exit_blockR% t todoR R0 R3 ( ( R1 R2 s& /usr/lib/python2.7/compiler/pyassem.pyR$ b sH 2 R c B sz e Z d Z d d � Z d � Z d � Z d � Z d � Z d � Z d � Z d Z d � Z d � Z d � Z d � Z RS( i t c C sP g | _ t � | _ | | _ t j | _ g | _ g | _ t j d t _ d S( Ni ( t instsR4 t outEdgest labelR t _countt bidR R ( R RB ( ( s& /usr/lib/python2.7/compiler/pyassem.pyR � s c C s, | j r d | j | j f Sd | j Sd S( Ns <block %s id=%d>s <block id=%d>( RB RD ( R ( ( s& /usr/lib/python2.7/compiler/pyassem.pyt __repr__� s c C s2 t t | j � } d | j | j d j | � f S( Ns <block %s %d: %s>s ( t mapt strR@ RB RD t join( R R@ ( ( s& /usr/lib/python2.7/compiler/pyassem.pyt __str__� s c C s | d } | j j | � d S( Ni ( R@ R6 ( R R# t op( ( s& /usr/lib/python2.7/compiler/pyassem.pyR" � s c C s | j S( N( R@ ( R ( ( s& /usr/lib/python2.7/compiler/pyassem.pyt getInstructions� s c C s | j j | � d S( N( RA R ( R R ( ( s& /usr/lib/python2.7/compiler/pyassem.pyR! � s c C s~ | j j | � t | j � d k s= t t t | j � � � | j j | � t | j � d k sz t t t | j � � � d S( Ni ( R R6 R R/ RF RG R ( R R ( ( s& /usr/lib/python2.7/compiler/pyassem.pyR � s -t RETURN_VALUEt RAISE_VARARGSt JUMP_ABSOLUTEt JUMP_FORWARDt CONTINUE_LOOPc C s? y | j d \ } } Wn t t f k r1 d SX| | j k S( s� Returns True if there is an unconditional transfer to an other block at the end of this block. This means there is no risk for the bytecode executer to go past this block's bytecode.i����N( R@ t IndexErrort ValueErrort _uncond_transfer( R RJ t arg( ( s& /usr/lib/python2.7/compiler/pyassem.pyR; � s c C s t | j � | j S( N( t listRA R ( R ( ( s& /usr/lib/python2.7/compiler/pyassem.pyR � s c C sN t | j � } x8 | j D]- } | d t j k r | j | d � q q W| S( s: Get the whole list of followers, including the next block.i i ( R4 R R@ t PyFlowGrapht hasjrelR ( R t followersR# ( ( s& /usr/lib/python2.7/compiler/pyassem.pyR9 � s c C sb g } xU | j D]J } t | � d k r. q n | d } t | d � r | j | j � q q W| S( s� Return all graphs contained within this block. For example, a MAKE_FUNCTION block will contain a reference to the graph for the function body. i t graph( R@ R t hasattrR6 RY ( R t containedR# RJ ( ( s& /usr/lib/python2.7/compiler/pyassem.pyR+ � s ( RL RM RN RO RP ( R- R. RC R RE RI R" RK R! R RS R; R R9 R+ ( ( ( s& /usr/lib/python2.7/compiler/pyassem.pyR � s t RAWt FLATt CONVt DONERV c B sA e Z e j Z d d d d � Z d � Z d � Z d � Z d � Z d � Z d � Z d d � Z d � Z d � Z e � Z x% e j D] Z e j e j e � q� We � Z x% e j D] Z e j e j e � q� Wd � Z d � Z d � Z i Z d � Z d � Z e Z e Z d � Z d � Z e Z e Z! e Z" e Z# e Z$ e Z% e Z& e Z' e Z( e Z) d � Z* e* Z+ e* Z, d � Z- e. e j/ � Z0 d � Z1 xD e2 � j3 � D]3 \ Z4 Z5 e4 d d k r�e4 d Z e5 e e <q�q�W[4 [5 [ d � Z6 i Z7 x. e8 e9 e j � � D] Z: e: e7 e j e: <qW[: d � Z; d � Z< RS( i c C s | j � | | _ | | _ d | _ | | _ t | � | _ | | _ | r\ t t B| _ n d | _ g | _ g | _ g | _ g | _ g | _ t | � p� g | _ xO t t | j � � D]8 } | j | } t | t � r� | j � | j | <q� q� Wt | _ d S( Ni ( t super_initt namet filenameR t docstringt argst getArgCountt argcountt klassR R t flagst constst namest freevarst cellvarst closureRU t varnamest rangeR R t TupleArgt getNameR\ t stage( R Ra Rb Rd t optimizedRg t it var( ( s& /usr/lib/python2.7/compiler/pyassem.pyR s* c C s | | _ d S( N( Rc ( R t doc( ( s& /usr/lib/python2.7/compiler/pyassem.pyt setDocstring s c C s3 | j | B| _ | t k r/ | j d | _ n d S( Ni ( Rh R Rf ( R t flag( ( s& /usr/lib/python2.7/compiler/pyassem.pyt setFlag" s c C s | j | @r d Sd S( Ni ( Rh ( R Rx ( ( s& /usr/lib/python2.7/compiler/pyassem.pyt checkFlag' s c C s t | � | _ d S( N( RU Rk ( R Rj ( ( s& /usr/lib/python2.7/compiler/pyassem.pyt setFreeVars+ s c C s | | _ d S( N( Rl ( R Rj ( ( s& /usr/lib/python2.7/compiler/pyassem.pyt setCellVars. s c C s� | j t k s t � | j � | j � | j t k s> t � | j � | j t k s] t � | j � | j t k s| t � | j � S( s Get a Python code object( Rr R\ R/ t computeStackDeptht flattenGraphR] t convertArgsR^ t makeByteCodeR_ t newCodeObject( R ( ( s& /usr/lib/python2.7/compiler/pyassem.pyt getCode1 s c C s� | r t j } | t _ n d } x~ | j D]s } | d } | d k rK Hn t | � d k r{ d Gd | G| GH| d } q+ d Gd | G| G| d GH| d } q+ W| r� | t _ n d S( Ni t SET_LINENOi s s %3di ( t syst stdoutR@ R ( R t iot savet pct tt opname( ( s& /usr/lib/python2.7/compiler/pyassem.pyt dump= s c sp i � d } x* � j � D] } t | j � � � | <q Wi � � � � � f d � � � � j d � � _ d S( s� Compute the max stack depth. Approach is to compute the stack effect of each basic block. Then find the path through the code with the largest total effect. c s� | � k r | Sd � | <| � | } | j � } | r` t g | D] } � | | � ^ qD � S| j d k s � � j | � S| Sd S( Ni R ( R t maxRB R ( R t dt childrenR0 ( t deptht max_deptht seenR ( s& /usr/lib/python2.7/compiler/pyassem.pyR� ] s &i N( R R( t findDepthRK R t stacksize( R R R ( ( R� R� R� R s& /usr/lib/python2.7/compiler/pyassem.pyR} O s c C s� | j t k s t � g | _ } d } i } i } x� | j � D]z } | | | <x] | j � D]O } | j | � t | � d k r� | d } q^ | d d k r^ | d } q^ q^ W| | | <qA Wd } x� t t | � � D]� } | | } t | � d k r| d } n | d d k r$| d } n | d } | | j k rh| d } | | | } | | f | | <q� | | j k r� | | | d f | | <q� q� Wt | _ d S( s- Arrange the blocks in order and resolve jumpsi i R� i N( Rr R\ R/ R@ R& RK R6 R Ro RW t hasjabsR] ( R R@ R� t beginR R R# Rt R� t opargt offset( ( s& /usr/lib/python2.7/compiler/pyassem.pyR~ m s: c C s� | j t k s t � | j j d | j � | j � x� t t | j � � D]n } | j | } t | � d k rK | \ } } | j j | d � } | r� | | | | � f | j | <q� qK qK Wt | _ d S( s0 Convert arguments from symbolic to concrete formi i N( Rr R] R/ Ri t insertRc t sort_cellvarsRo R R@ t _converterst getR R^ ( R Rt R� R� R� t conv( ( s& /usr/lib/python2.7/compiler/pyassem.pyR � s &c C s� i } x | j D] } d | | <q Wg | j D] } | | k r. | ^ q. | _ x | j D] } | | =qY W| j | j � | _ | j | j | _ d S( sH Sort cellvars in the order of varnames and prune from freevars. i N( Rl Rn t keysRk Rm ( R t cellsRa ( ( s& /usr/lib/python2.7/compiler/pyassem.pyR� � s c C sp t | � } xD t t | � � D]0 } | t | | � k r | | | k r | Sq Wt | � } | j | � | S( s� Return index of name in list, appending if necessary This routine uses a list instead of a dictionary, because a dictionary can't store two different keys if the keys have the same value but different types, e.g. 2 and 2L. The compiler must treat these two separately, so it does an explicit type comparison before comparing the values. ( t typeRo R R6 ( R Ra RU R� Rt R ( ( s& /usr/lib/python2.7/compiler/pyassem.pyt _lookupName� s & c C s1 t | d � r | j � } n | j | | j � S( NR� ( RZ R� R� Ri ( R RT ( ( s& /usr/lib/python2.7/compiler/pyassem.pyt _convert_LOAD_CONST� s c C s& | j | | j � | j | | j � S( N( R� Rj Rn ( R RT ( ( s& /usr/lib/python2.7/compiler/pyassem.pyt _convert_LOAD_FAST� s c C s8 | j d k r% | j | | j � n | j | | j � S( N( Rg R R� Rn Rj ( R RT ( ( s& /usr/lib/python2.7/compiler/pyassem.pyt _convert_LOAD_NAME� s c C s8 | j d k r% | j | | j � n | j | | j � S( N( Rg R R� Rn Rj ( R RT ( ( s& /usr/lib/python2.7/compiler/pyassem.pyt _convert_NAME� s c C s9 | j | | j � | j | | j � | j | | j � S( N( R� Rj Rn Rm ( R RT ( ( s& /usr/lib/python2.7/compiler/pyassem.pyt _convert_DEREF� s c C s& | j | | j � | j | | j � S( N( R� Rn Rm ( R RT ( ( s& /usr/lib/python2.7/compiler/pyassem.pyt _convert_LOAD_CLOSURE� s c C s | j j | � S( N( t _cmpt index( R RT ( ( s& /usr/lib/python2.7/compiler/pyassem.pyt _convert_COMPARE_OP� s i t _convert_c C s | j t k s t � t � | _ } x� | j D]� } | d } t | � d k rh | j | j | � q/ | d } | d k r� | j | � q/ n t | � \ } } y | j | j | | | � Wq/ t k r� | G| GH| j | G| G| GH� q/ Xq/ Wt | _ d S( Ni i R� ( Rr R^ R/ t LineAddrTablet lnotabR@ R t addCodet opnumt nextLinet twobyteRR R_ ( R R� R� R� R� t hit lo( ( s& /usr/lib/python2.7/compiler/pyassem.pyR� � s$ c C s� | j t k s t � | j t @d k r1 d } n t | j � } | j } | j t @rc | d } n t j | | | j | j | j j � | j � t | j � t | j � | j | j | j j | j j � t | j � t | j � � S( Ni i ( Rr R_ R/ Rh R R Rn Rf R t typest CodeTypeR� R� R� t getConstst tupleRj Rb Ra t firstlinet getTableRk Rl ( R t nlocalsRf ( ( s& /usr/lib/python2.7/compiler/pyassem.pyR� s c C sO g } x< | j D]1 } t | t � r4 | j � } n | j | � q Wt | � S( s� Return a tuple for the const slot of the code object Must convert references to code (MAKE_FUNCTION) to code objects recursively. ( Ri R RV R� R6 R� ( R R, t elt( ( s& /usr/lib/python2.7/compiler/pyassem.pyR� " s ( N(= R- R. R R R` R Rw Ry Rz R{ R| R� R� R} R~ R4 RW t disRt R R� R� R R� R� R� R� R� t _convert_STORE_FASTt _convert_DELETE_FASTR� R� t _convert_STORE_NAMEt _convert_DELETE_NAMEt _convert_IMPORT_NAMEt _convert_IMPORT_FROMt _convert_STORE_ATTRt _convert_LOAD_ATTRt _convert_DELETE_ATTRt _convert_LOAD_GLOBALt _convert_STORE_GLOBALt _convert_DELETE_GLOBALR� t _convert_LOAD_DEREFt _convert_STORE_DEREFR� RU t cmp_opR� R� t localst itemsRa t objR� R� Ro R t numR� R� ( ( ( s& /usr/lib/python2.7/compiler/pyassem.pyRV � sn ! c C s | d d k r d Sd S( Ni t JUMPi ( ( R� ( ( s& /usr/lib/python2.7/compiler/pyassem.pyt isJump/ s Rp c B s) e Z d Z d � Z d � Z d � Z RS( s: Helper for marking func defs with nested tuples in arglistc C s | | _ | | _ d S( N( t countRj ( R R� Rj ( ( s& /usr/lib/python2.7/compiler/pyassem.pyR 5 s c C s d | j | j f S( Ns TupleArg(%s, %s)( R� Rj ( R ( ( s& /usr/lib/python2.7/compiler/pyassem.pyRE 8 s c C s d | j S( Ns .%d( R� ( R ( ( s& /usr/lib/python2.7/compiler/pyassem.pyRq : s ( R- R. t __doc__R RE Rq ( ( ( s& /usr/lib/python2.7/compiler/pyassem.pyRp 3 s c C s^ t | � } | rZ xE | D]: } t | t � r t t j | j � � } | | } q q Wn | S( N( R R Rp R t flattenRj ( Rd Rf RT t numNames( ( s& /usr/lib/python2.7/compiler/pyassem.pyRe = s c C s( t | t t f � s t � t | d � S( s/ Convert an int argument into high and low bytesi ( R t intt longR/ t divmod( t val( ( s& /usr/lib/python2.7/compiler/pyassem.pyR� F s R� c B s; e Z d Z d � Z d � Z d � Z d � Z d � Z RS( s( lnotab This class builds the lnotab, which is documented in compile.c. Here's a brief recap: For each SET_LINENO instruction after the first one, two bytes are added to lnotab. (In some cases, multiple two-byte entries are added.) The first byte is the distance in bytes between the instruction for the last SET_LINENO and the current SET_LINENO. The second byte is offset in line numbers. If either offset is greater than 255, multiple two-byte entries are added -- see compile.c for the delicate details. c C s: g | _ d | _ d | _ d | _ d | _ g | _ d S( Ni ( t codet codeOffsetR� t lastlinet lastoffR� ( R ( ( s& /usr/lib/python2.7/compiler/pyassem.pyR Z s c G sA x$ | D] } | j j t | � � q W| j t | � | _ d S( N( R� R6 t chrR� R ( R Rd RT ( ( s& /usr/lib/python2.7/compiler/pyassem.pyR� b s c C s | j d k r$ | | _ | | _ n� | j | j } | | j } | d k r| j j } x. | d k r� | d � | d � | d 8} q\ Wx4 | d k r� | | � | d � | d 8} d } q� W| d k s� | d k r� | | � | | � n | | _ | j | _ n d S( Ni i� ( R� R� R� R� R� R6 ( R t linenot addrt linet push( ( s& /usr/lib/python2.7/compiler/pyassem.pyR� g s* c C s d j | j � S( NR? ( RH R� ( R ( ( s& /usr/lib/python2.7/compiler/pyassem.pyR� � s c C s d j t t | j � � S( NR? ( RH RF R� R� ( R ( ( s& /usr/lib/python2.7/compiler/pyassem.pyR� � s ( R- R. R� R R� R� R� R� ( ( ( s& /usr/lib/python2.7/compiler/pyassem.pyR� K s t StackDepthTrackerc B s� e Z d d � Z i& d d 6d d 6d d 6d d 6d d 6d d 6d d 6d d 6d d 6d d 6d d 6d d 6d d 6d d 6d d 6d d 6d d 6d d 6d d 6d d 6d d 6d d 6d d 6d d 6d d 6d d 6d d 6d d! 6d d" 6d d# 6d d$ 6d d% 6d d& 6d d' 6d( d) 6d( d* 6d d+ 6d d, 6Z d; d< g Z d/ � Z d0 � Z d1 � Z d2 � Z d3 � Z d4 � Z d5 � Z d6 � Z d7 � Z d8 � Z d9 � Z d: � Z RS(= i c C s d } d } x| D]� } | d } | r0 | Gn | j j | d � } | d k r^ | | } n� xA | j D]6 \ } } | t | � | k rh | } | | } Pqh qh W| d k r� t | | d � } | d k r� | | | d � } q� n | | k r� | } n | r | G| GHq q W| S( Ni i ( t effectR� R t patternsR t getattr( R R@ t debugR� t maxDepthRt R� t deltat patt pat_deltat meth( ( s& /usr/lib/python2.7/compiler/pyassem.pyR� � s. i����t POP_TOPi t DUP_TOPt LIST_APPENDt SET_ADDi����t MAP_ADDs SLICE+1s SLICE+2s SLICE+3s STORE_SLICE+0s STORE_SLICE+1s STORE_SLICE+2i����s STORE_SLICE+3s DELETE_SLICE+0s DELETE_SLICE+1s DELETE_SLICE+2s DELETE_SLICE+3t STORE_SUBSCRt DELETE_SUBSCRt PRINT_ITEMRL t YIELD_VALUEt EXEC_STMTt BUILD_CLASSt STORE_NAMEt STORE_ATTRt DELETE_ATTRt STORE_GLOBALt BUILD_MAPt COMPARE_OPt STORE_FASTt IMPORT_STARt IMPORT_NAMEt IMPORT_FROMt LOAD_ATTRi t SETUP_EXCEPTt SETUP_FINALLYt FOR_ITERt WITH_CLEANUPt BINARY_t LOAD_c C s | d S( Ni ( ( R R� ( ( s& /usr/lib/python2.7/compiler/pyassem.pyt UNPACK_SEQUENCE� s c C s | d S( Ni ( ( R R� ( ( s& /usr/lib/python2.7/compiler/pyassem.pyt BUILD_TUPLE� s c C s | d S( Ni ( ( R R� ( ( s& /usr/lib/python2.7/compiler/pyassem.pyt BUILD_LIST� s c C s | d S( Ni ( ( R R� ( ( s& /usr/lib/python2.7/compiler/pyassem.pyt BUILD_SET� s c C s" t | d � \ } } | | d S( Ni i ( R� ( R t argcR� R� ( ( s& /usr/lib/python2.7/compiler/pyassem.pyt CALL_FUNCTION� s c C s | j | � d S( Ni ( R ( R R ( ( s& /usr/lib/python2.7/compiler/pyassem.pyt CALL_FUNCTION_VAR� s c C s | j | � d S( Ni ( R ( R R ( ( s& /usr/lib/python2.7/compiler/pyassem.pyt CALL_FUNCTION_KW� s c C s | j | � d S( Ni ( R ( R R ( ( s& /usr/lib/python2.7/compiler/pyassem.pyt CALL_FUNCTION_VAR_KW� s c C s | S( N( ( R R ( ( s& /usr/lib/python2.7/compiler/pyassem.pyt MAKE_FUNCTION� s c C s | S( N( ( R R ( ( s& /usr/lib/python2.7/compiler/pyassem.pyt MAKE_CLOSURE� s c C s$ | d k r d S| d k r d Sd S( Ni i����i i����( ( R R ( ( s& /usr/lib/python2.7/compiler/pyassem.pyt BUILD_SLICE� s c C s | S( N( ( R R ( ( s& /usr/lib/python2.7/compiler/pyassem.pyt DUP_TOPX� s ( R i����( R i ( R- R. R� R� R� R R R R R R R R R R R R ( ( ( s& /usr/lib/python2.7/compiler/pyassem.pyR� � sl ( R� R� R� R� t compilerR t compiler.constsR R R R R R$ R R\ R] R^ R_ RV R� Rp Re R� R� R� R� ( ( ( s& /usr/lib/python2.7/compiler/pyassem.pyt <module> s* "W CT� 2 Bn