VhYdZddlmZddlZddlZddlZddlZddlZddlm Z ddlm Z ddl m Z ddl mZmZmZddlmZdd lmZdd lmZed ed ef ZdadZGddeZd$dZdZGddeZdZ GddZ!GddZ"GddZ#gZ$d%dZ%Gdde&Z'dZ(d Z)dddd!e'jTfd"Z+d#Z,y)&z9 Asynchronous-friendly error mechanism. See L{Failure}. ) annotationsN)partial)getmro)StringIO)CallableNoReturnTypeVar)Version)reflect)deprecatedProperty _T_Callable.)boundc eZdZy)DefaultExceptionN)__name__ __module__ __qualname__F/home/dcms/DCMS/lib/python3.12/site-packages/twisted/python/failure.pyrr&srrc V|dvrtd|d|}|dk(r|D]\}}}}}||d|d|dy|dk(rM|D]G\}}}}}|d|d |d |d|d tj||jzIy|d k(r$|D]\}}}}}|d |||fz|dy|dk(rp|D]j\}}}}}|d |||fz|d|D]\} } |d| dt | d|d|D]\} } |d| dt | dlyy)a Format and write frames. @param frames: is a list of frames as used by Failure.frames, with each frame being a list of (funcName, fileName, lineNumber, locals.items(), globals.items()) @type frames: list @param write: this will be called with formatted strings. @type write: callable @param detail: Four detail levels are available: default, brief, verbose, and verbose-vars-not-captured. C{Failure.printDetailedTraceback} uses the latter when the caller asks for verbose, but no vars were captured, so that an explicit warning about the missing data is shown. @type detail: string )defaultbriefverboseverbose-vars-not-capturedzKDetail must be default, brief, verbose, or verbose-vars-not-captured. (not )r: rz File "z", line z, in z %s rz%s:%d: %s(...) zA [Capture of Locals and Globals disabled (use captureVars=True)] rz [ Locals ] z z : z ( Globals ) N) ValueError linecachegetlinestriprepr) frameswritedetailwmethodfilenamelineno localVars globalVarsnamevals r format_framesr0*s"QQ5; >   A ?E 1 ;FHfi  !F81VHB/ 0 1 9 ?E H ;FHfi  (6(%xrB C j9,,Xv>DDFF G H . .?E ? ;FHfi  Hff#== > ? NO 9 ?E / ;FHfi  Hff#== > o & / cBtfCS {"-. /  ' / cBtfCS {"-. / / rz--- ---ceZdZdZy)NoCurrentExceptionErrorz Raised when trying to create a Failure from the current interpreter exception state and there is no current exception state. N)rrr__doc__rrrr2r2\srr2ct|dkDsJdd}t|d|}t|x}}|ddD]*}t||}t||_|j},|S)z Construct a fake traceback object using a list of frames. It should have the same API as stdlib to allow interaction with other tools. @param tbFrames: [(methodname, filename, lineno, locals, globals), ...] rzMust pass some framesN)len_Frame_TracebackFrametb_next)tbFramesstackfirstTbtbsfs r _Tracebackr?cs x=1 555  E 8A; &E"5))Gbqrlr5!$U+ ZZ NrceZdZdZdZy)r8zq Fake traceback object which can be passed to functions in the standard library L{traceback} module. cd||_|j|_|j|_d|_y)z- @param frame: _Frame object N)tb_framef_lineno tb_linenof_lastitb_lastir9)selfframes r__init__z_TracebackFrame.__init__s(    rNrrrr3rIrrrr8r8s  rr8ceZdZdZdZy)r7aD A fake frame object, used by L{_Traceback}. @ivar f_code: fake L{code} object @ivar f_lineno: line number @ivar f_globals: fake f_globals dictionary (usually empty) @ivar f_locals: fake f_locals dictionary (usually empty) @ivar f_back: previous stack frame (towards the caller) c|\}}}}}t|||_||_t|xsi|_t|xsi|_||_d|_ttj|_ d|_ y)z @param frameinfo: (methodname, filename, lineno, locals, globals) @param back: previous (older) stack frame @type back: C{frame} rN) _Codef_coderCdict f_globalsf_localsf_backrEvarsbuiltinscopy f_builtinsf_trace)rG frameinfobackr.r*r+localzglobalzs rrIz_Frame.__init__sr 3</hD(+  gm,V\r*   x.--/ rNrJrrrr7r7s rr7ceZdZdZdZdZy)rMz A fake code object, used by L{_Traceback} via L{_Frame}. It is intended to have the same API as the stdlib code type to allow interoperation with other tools based on that interface. c||_||_d|_d|_d|_g|_d|_d|_d|_d|_ d|_ d|_ d|_ d|_ d|_d|_y)Nrrr)co_name co_filename co_lnotabco_firstlineno co_argcount co_varnamesco_code co_cellvars co_constsco_flags co_freevarsco_posonlyargcountco_kwonlyargcountco_names co_nlocals co_stacksize)rGr.r*s rrIz_Code.__init__s{ #  "#!" rcy)N))NNNNrrGs r co_positionsz_Code.co_positionss*rN)rrrr3rIrprrrrMrMs$+rrMcDtj|j|S)a Mark the given callable as extraneous to inlineCallbacks exception reporting; don't show these functions. @param f: a function that you NEVER WANT TO SEE AGAIN in ANY TRACEBACK reported by Failure. @type f: function @return: f )_inlineCallbacksExtraneousappend__code__)fs r _extraneousrvs%%ajj1 HrcveZdZdZdZdZd!dZedZejdZe e ddd dd Z e jd Z ed Z e jd Z dZed"dZdZdZd#dZedZd$dZd$dZdZdZdZdZdZd$dZd$dZd%d&dZd'dZ d(dZ!d(d Z"y))Failurea A basic abstraction for an error that has occurred. This is necessary because Python's built-in error mechanisms are inconvenient for asynchronous communication. The C{frame} attribute contain the traceback frames. Each frame is a tuple of (funcName, fileName, lineNumber, localsItems, globalsItems), where localsItems and globalsItems are the contents of C{locals().items()}/C{globals().items()} for that frame, or an empty tuple if those details were not captured. Local/global variables in C{frame} will only be captured if C{captureVars=True} when constructing the L{Failure}. @ivar value: The exception instance responsible for this failure. @ivar type: The exception's class. @ivar stack: Deprecated, always an empty list. Equivalent information can be extracted from C{import traceback; traceback.extract_stack(your_failure.tb)} @ivar frames: list of frames, innermost first. rNcRtdzat|_dx|_x|_}||_|8t j \|_|_}|jTt |:t|tr|j|_nt||_||_n||_||_t|jtr|j|jy|9|r |}||_yt|jddr|jj}||_y)a- Initialize me with an explanation of the error. By default, this will use the current C{exception} (L{sys.exc_info}()). However, if you want to specify a particular kind of failure, you can pass an exception as an argument. If no C{exc_value} is passed, then an "original" C{Failure} will be searched for. If the current exception handler that this C{Failure} is being constructed in is handling an exception raised by L{raiseException}, then this C{Failure} will act like the original C{Failure}. For C{exc_tb} only L{traceback} instances or L{None} are allowed. If L{None} is supplied for C{exc_value}, the value of C{exc_tb} is ignored, otherwise if C{exc_tb} is L{None}, it will be found from execution context (ie, L{sys.exc_info}). @param captureVars: if set, capture locals and globals of stack frames. This is pretty slow, and makes no difference unless you are going to use L{printDetailedTraceback}. r5N __traceback__)counttypevalue captureVarssysexc_infor2 isinstance Exception __class__rx _extrapolategetattrrzr=)rG exc_valueexc_typeexc_tbr~r=s rrIzFailure.__init__s2  &** *DJ&  (+  %DItz2yy -//  )Y/%// !O "DJ DI"DJ djj' *   djj )  :_d;ZZ--rctt|dr |jSgx}|_|j}||j}|jr|j j }|j |juri}n|jj }||fD] }d|vs|d= t|j}t|j}ndx}}|j|jj|jj|j||f|j}||S)N_frames __builtins__r)hasattrrr=rBr~rQrUrPlistitemsrsrNr^r_rDr9)rGr%r=rurZr[ds rr%zFailure.frames8s 4 #<<  "" WWn A*::, Gkk..0G &.A%*n-.flln-w}}/#%% MMHH$$HH((LL  B1n2 rc||_yN)r)rGr%s rr%zFailure.frames[s  rTwisted cgSrrros rr;z Failure.stack_s rc~yrr)rGr;s rr;z Failure.stackcs rcr|j |jStj|jrct |jt rIt |j}tttj||_|jS|jg|_|jSr) _parentsinspectisclassr| issubclassrrrmapr qual)rGparentCss rparentszFailure.parentsgs} == $== ??499 %*TYY *Jdii(H W\\8!<=DM}}"YYKDM}}rc||_yr)r)rGrs rrzFailure.parentsss  rcLtj|j|_y)a, Extrapolate from one failure into another, copying its stack frames. @param otherFailure: Another L{Failure}, whose traceback information, if any, should be preserved as part of the stack presented by this one. @type otherFailure: L{Failure} N)rU__dict__)rG otherFailures rrzFailure._extrapolatews ,"7"78 rctjt}tdz ad|_t|_||_|j |_d|_|S)z Create a L{Failure} for an exception without a traceback. By restricting the inputs significantly, this constructor runs much faster. r5FN)rx__new__r{r~r}rr|r=)r}results r_withoutTracebackzFailure._withoutTracebacksH)  "  oo   rcH|j|}|s|j|S)a Trap this failure if its type is in a predetermined list. This allows you to trap a Failure in an error callback. It will be automatically re-raised if it is not a type that you expect. The reason for having this particular API is because it's very useful in Deferred errback chains:: def _ebFoo(self, failure): r = failure.trap(Spam, Eggs) print('The Failure is due to either Spam or Eggs!') if r == Spam: print('Spam did it!') elif r == Eggs: print('Eggs did it!') If the failure is not a Spam or an Eggs, then the Failure will be 'passed on' to the next errback. In Python 2 the Failure will be raised; in Python 3 the underlying exception will be re-raised. @type errorTypes: L{Exception} )checkraiseException)rG errorTypeserrors rtrapz Failure.traps(0 J'    ! rc|D]P}|}tj|r%t|trt j |}||j vsN|cSy)a Check if this failure's type is in a predetermined list. @type errorTypes: list of L{Exception} classes or fully-qualified class names. @returns: the matching L{Exception} type, or None if no match. N)rrrrr rr)rGrrerrs rrz Failure.checksQ  ECu%*UI*Fll5)dll"   rcL|jj|j)zf raise the original exception, preserving traceback information if available. )r}with_tracebackr=ros rrzFailure.raiseExceptions jj''00rcj|j|jj|jS)aJ Throw the original exception into the given generator, preserving traceback information if available. @return: The next value yielded from the generator. @raise StopIteration: If there are no more values in the generator. @raise anything else: Anything that the generator raises. )throwr}rr=)rGgs rthrowExceptionIntoGeneratorz#Failure.throwExceptionIntoGenerators&wwtzz009::rcdjtj|jtj|j|j S)Nz <{} {}: {}>)formatr rrr|getErrorMessageros r__repr__zFailure.__repr__sA## LL ( LL #  "  rc(d|jzS)Nz[Failure instance: %s])getBriefTracebackros r__str__zFailure.__str__s'$*@*@*BBBrcd|vr|jd|jd|d<|jd|d<|jj|y)Nr;rrr%r)poprupdaterGstates r __setstate__zFailure.__setstate__sN e  IIg !IIi0j 99X.i U#rc |j}|jj}|jd|d<g|d<d|vr|jd|jrD|j Dcgc]*}|d|d|dt |dt |d g,c}|d <n|j |d <d |d <d|d <|Scc}w)z Avoid pickling objects in the traceback. This is not called direclty by pickle, since C{BaseException} implements reduce; instead, pickle calls C{Failure.__reduce__} which then calls this API. rrr;rrr5rr%Nr=pickled)rrrUrr~r% _safeReprVars)rG_cvs r __getstate__zFailure.__getstate__s LL MM   uuZ() ' > EE)      aDaDaD!!A$'!!A$'  AhK++AhK$) # s//Cc`ttjtd|jfS)Nr)rrxrrros r __reduce__zFailure.__reduce__s%12t7H7H7JKKrc|j}|jd|d<||_t|jddrd|j_yy)z Remove references to other objects, replacing them with strings. On Python 3, this will also set the C{__traceback__} attribute of the exception instance to L{None}. r%rrzN)rrrrr}rzrs r cleanFailurezFailure.cleanFailuresM!!# 99X.i 4:: 5'+DJJ $ 6rc|j |jSt|jdkDrt|jSy)a Get an object that represents this Failure's stack that can be passed to traceback.extract_tb. If the original traceback object is still present, return that. If this traceback object has been lost but we still have the information, return a fake traceback object (see L{_Traceback}). If there is no traceback information at all, return None. Nr)r=r6r%r?ros rgetTracebackObjectzFailure.getTracebackObject!s: 77 77N   !dkk* *rct|jtr|jjSt j |jS)zJ Get a string of the exception which caused this Failure. )rr}rxrr safe_strros rrzFailure.getErrorMessage2s: djj' *::--/ / ++rcZt}|j||jS)N)file)rprintBriefTracebackgetvalue)rGios rrzFailure.getBriefTraceback:s& Z   b ){{}rc^t}|j||||jS)N)relideFrameworkCoder')rprintTracebackr)rGrr'rs r getTracebackzFailure.getTraceback?s2 Z (:6  {{}rc d|ddlm}|j}|j}|dk(r|jsd}n|}|dk(r*|d|j |j xrdxsdfznj|d k(r]|jrd }nd }||d tj|jd tj|jd n|d|jrt|j||n |d k(s|d|d k(sH|tj|jd tj|jd t|jtr.|jd|jj!||||dk(r|d|j zyy)a Emulate Python's standard error reporting mechanism. @param file: If specified, a file-like object to which to write the traceback. @param elideFrameworkCode: Deprecated, ignored. @param detail: A string indicating how much information to include in the traceback. Must be one of C{'brief'}, C{'default'}, or C{'verbose'}. Nr)logrrz*--- Failure #%d%s--- z (pickled)  r Tracebackz"Traceback (failure with no frames)z: rz#Traceback (most recent call last): z Failure: z (chained Failure) z*--- End of Failure #%d --- )twisted.pythonrlogerrr&r~r{rr%r rr|r}r0rrrxr)rGrrr'rr( formatDetail hasFramess rrzFailure.printTracebackFs < *::D JJ Y t'7'77L!L Y  ):: >F3GH w {{' @ g..tyy97;K;KDJJ;WY  4 5 ;; $++q, 77" kN dii()G,<, G Y  - : ; rc,|j||dy)z; Print a traceback as densely as possible. rr'NrrGrrs rrzFailure.printBriefTracebacks D"4WErc,|j||dy)zQ Print a traceback with detailed locals and globals information. rrNrrs rprintDetailedTracebackzFailure.printDetailedTracebacks D"4YGr)NNNF)r} BaseExceptionreturnrx)rr)rstr)rr)rintr'rrr)NFr)Nr)#rrrr3rrrIpropertyr%setterr r r;rr staticmethodrrrrrvrrrrrrrrrrrrrrrrrrxrxs14GH7r  D ]] 2r1567 \\   ^^   9": 1 ; ; C$&PL ,", ?r s #  .."7m8CK+@A    y +/^:iB   8++<   pHmpHf M    $$ D:"r