ó -òPPc@`sXdZddlmZmZddlZddlZddlZddlZddlmZddl m Z m Z ddl mZdadZdefd „ƒYZd d „Zd Zd efd„ƒYZdefd„ƒYZdefd„ƒYZdefd„ƒYZdfd„ƒYZd„ZeZeeee ej!d„Z"d„Z#dS(s9 Asynchronous-friendly error mechanism. See L{Failure}. i(tdivisiontabsolute_importN(tgetmro(t_PY3tNativeStringIO(t _reflectpy3itDefaultExceptioncB`seZRS((t__name__t __module__(((sH/var/www/html/hlstest/hls-proxy/Twisted-13.2.0/twisted/python/failure.pyRstdefaultc C`sä|dkr"td|fƒ‚n|}|dkrnx©|D],\}}}}}|d|||fƒq;Wnr|dkrÔxc|D]L\}}}}}|d|||fƒ|dtj||ƒjƒƒqWn |dkr$x4|D],\}}}}}|d |||fƒqçW|d ƒn¼|dkràx­|D]¢\}}}}}|d |||fƒ|d ƒx.|D]&\} } |d | t| ƒfƒqtW|d ƒx.|D]&\} } |d | t| ƒfƒq¯Wq7WndS(s“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 R tbrieftverbosesverbose-vars-not-capturedsNDetail must be default, brief, verbose, or verbose-vars-not-captured. (not %r)s %s:%s:%s s File "%s", line %s, in %s s %s s%s:%d: %s(...) sA [Capture of Locals and Globals disabled (use captureVars=True)] s [ Locals ] s %s : %s s ( Globals ) N(sdefaultR sverbosesverbose-vars-not-captured(t ValueErrort linecachetgetlinetstriptrepr( tframestwritetdetailtwtmethodtfilenametlinenot localVarst globalVarstnametval((sH/var/www/html/hlstest/hls-proxy/Twisted-13.2.0/twisted/python/failure.pyt format_frames s4   '     s--- ---tNoCurrentExceptionErrorcB`seZdZRS(sŠ Raised when trying to create a Failure from the current interpreter exception state and there is no current exception state. (RRt__doc__(((sH/var/www/html/hlstest/hls-proxy/Twisted-13.2.0/twisted/python/failure.pyRRst _TracebackcB`seZdZd„ZRS(sq Fake traceback object which can be passed to functions in the standard library L{traceback} module. cC`s”t|ƒdkstdƒ‚|d|d}}|\}}}}}t||ƒ|_||_t|ƒdkrd|_nt|ƒ|_dS(s] Construct a fake traceback object using a list of frames. Note that although frames generally include locals and globals, this information is not kept by this object, since locals and globals are not used in standard tracebacks. @param frames: [(methodname, filename, lineno, locals, globals), ...] isMust pass some framesiN(tlentAssertionErrort_Framettb_framet tb_linenotNonettb_nextR(tselfRtheadRRRtlocalztglobalz((sH/var/www/html/hlstest/hls-proxy/Twisted-13.2.0/twisted/python/failure.pyt__init___s   (RRRR+(((sH/var/www/html/hlstest/hls-proxy/Twisted-13.2.0/twisted/python/failure.pyRYsR"cB`seZdZd„ZRS(sè A fake frame object, used by L{_Traceback}. @ivar f_code: fake L{code} object @ivar f_globals: fake f_globals dictionary (usually empty) @ivar f_locals: fake f_locals dictionary (usually empty) cC`s(t||ƒ|_i|_i|_dS(s« @param name: method/function name for this frame. @type name: C{str} @param filename: filename for this frame. @type name: C{str} N(t_Codetf_codet f_globalstf_locals(R'RR((sH/var/www/html/hlstest/hls-proxy/Twisted-13.2.0/twisted/python/failure.pyR+|s (RRRR+(((sH/var/www/html/hlstest/hls-proxy/Twisted-13.2.0/twisted/python/failure.pyR"ssR,cB`seZdZd„ZRS(sB A fake code object, used by L{_Traceback} via L{_Frame}. cC`s||_||_dS(N(tco_namet co_filename(R'RR((sH/var/www/html/hlstest/hls-proxy/Twisted-13.2.0/twisted/python/failure.pyR+Œs (RRRR+(((sH/var/www/html/hlstest/hls-proxy/Twisted-13.2.0/twisted/python/failure.pyR,ˆstFailurecB`seZdZdZdZeejdƒZ ddde d„Z d„Z d„Z erdd„ZnddUd e_d „Zd „ZeeƒZd „Zd „Zd„Zd„Zd„Zd„Zd„Zddd„Zde dd„Zddd„Zddd„ZRS(sì 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{stack} and C{frame} attributes contain 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. @ivar value: The exception instance responsible for this failure. @ivar type: The exception's class. @ivar stack: list of frames, innermost last, excluding C{Failure.__init__}. @ivar frames: list of frames, innermost first. it YIELD_VALUEc C`stdat|_d|_|_}||_t|tƒrZ|dkrZtdƒ‚nd}|dkr{|jƒ}n|dkrÆt j ƒ\|_|_}|jdkr½t ƒ‚nd}nW|dkr t|t ƒrð|j |_nt|ƒ|_||_n||_||_t|jtƒrB|jj|_dS|dkru|r]|}qutru|jj}qung}|_g}|_||_|rª|j} nt|jtƒsÉd} }nx#|rî| rî| j} |d8}qÌWxÒ| rÃ|r| jjƒ} | j| jkr(i} n| jjƒ} x*| | fD]} d| krD| d=qDqDW| jƒ} | jƒ} n d} } |jd| jj| jj| j| | fƒ| j} qòWxê|dk r°|j} |ro| jjƒ} | j| jkr i} n| jjƒ} x*| | fD]} d| kr(| d=q(q(Wt | jƒƒ} t | jƒƒ} n d} } |j!| jj| jj|j"| | fƒ|j#}qÇWt$j%|jƒrt&|jt ƒrt'|jƒ} t t(t)j*| ƒƒ|_+n|jg|_+dS(s- 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 C{None} are allowed. If C{None} is supplied for C{exc_value}, the value of C{exc_tb} is ignored, otherwise if C{exc_tb} is C{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}. is$Strings are not supported by FailureiNt __builtins__(((,tcountR%ttypetvaluet captureVarst isinstancetstrt TypeErrort _findFailuretsystexc_infoRt Exceptiont __class__R2t__dict__Rt __traceback__RtstackttbR#tf_backR/tcopyR.titemstinsertR-R0R1tf_linenotlisttappendR$R&tinspecttisclasst issubclassRtmaptreflecttqualtparents(R't exc_valuetexc_typetexc_tbR8RDt stackOffsetRRCtfR)R*tdtparentCs((sH/var/www/html/hlstest/hls-proxy/Twisted-13.2.0/twisted/python/failure.pyR+¬s¤                                     $cG`s5|j|Œ}|s1tr(|jƒq1|‚n|S(stTrap 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} (tcheckRtraiseException(R't errorTypesterror((sH/var/www/html/hlstest/hls-proxy/Twisted-13.2.0/twisted/python/failure.pyttrap<s   cG`s^xW|D]O}|}tj|ƒrCt|tƒrCtj|ƒ}n||jkr|SqWdS(súCheck 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(RLRMRNR?RPRQRRR%(R'R\R]terr((sH/var/www/html/hlstest/hls-proxy/Twisted-13.2.0/twisted/python/failure.pyRZ[s cC`s|jj|jƒ‚dS(N(R7twith_tracebackRD(R'((sH/var/www/html/hlstest/hls-proxy/Twisted-13.2.0/twisted/python/failure.pyR[ossBdef raiseException(self): raise self.type, self.value, self.tbNsf raise the original exception, preserving traceback information if available. cC`s|j|j|j|jƒS(sJ 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. (tthrowR6R7RD(R'tg((sH/var/www/html/hlstest/hls-proxy/Twisted-13.2.0/twisted/python/failure.pytthrowExceptionIntoGenerator|s cC`stjƒd}|sdSd}|}x|jrD|}|j}q)W|j}|j|jjkrs|jj dƒS|jj sœ|jj |j |j kr dS|r×|j}|j|j jkr×|jj dƒSn|jj}|r|j|j jkr|jj dƒSdS(sV Find the failure that represents the exception currently in context. iÿÿÿÿNR'(R=R>R%R&R#R-R[t__code__R/tgettco_codettb_lastit _yieldOpcodeRcRE(tclsRDt secondLastTbtlastTbt lastFrametframe((sH/var/www/html/hlstest/hls-proxy/Twisted-13.2.0/twisted/python/failure.pyR<ˆs*      cC`sd|j|jfS(Ns<%s %s>(R@R6(R'((sH/var/www/html/hlstest/hls-proxy/Twisted-13.2.0/twisted/python/failure.pyt__repr__ÂscC`sd|jƒS(Ns[Failure instance: %s](tgetBriefTraceback(R'((sH/var/www/html/hlstest/hls-proxy/Twisted-13.2.0/twisted/python/failure.pyt__str__Åsc C`sç|jr|jS|jjƒ}g|jD];}|d|d|dt|dƒt|dƒg^q)|dR@tDO_POST_MORTEMR:tpdbt post_mortem( R'RSRTRUR8tFailure__init__texctstrreprR•((sH/var/www/html/hlstest/hls-proxy/Twisted-13.2.0/twisted/python/failure.pyt _debuginitys    cC`s tt_dS(s Enable debug hooks for Failures.N(RšR2R+(((sH/var/www/html/hlstest/hls-proxy/Twisted-13.2.0/twisted/python/failure.pytstartDebugModeŒs($Rt __future__RRR=R RLRRttwisted.python.compatRRR{R…RRPR5R‡R?RRRˆRtobjectRR"R,R2RrtTrueR”R%RR+RšR›(((sH/var/www/html/hlstest/hls-proxy/Twisted-13.2.0/twisted/python/failure.pyt s2     . ÿ×