我用pyparsing编写了一个大的（对我来说）语法来解析H248消息，这是一种文本格式，有大约500行的pypasing结构。我发现平均性能是可以接受的，如果我给解析器提供许多要解析的消息（我的电脑上每条消息大约半秒钟）。
但是我的解析器的基本用法是解析一条消息，然后转储掉某些部分，然后我把它写成一个独立的程序。现在我的x86 pc上花了12秒，（在共享的solaria服务器上1m12s！）来解析第一条消息。所以我想知道是否有任何技术可以绕过这个启动时间？我尝试过psyco，它没有帮助启动时间。
我现在要做的是编写一个长生活服务器导入解析器并接受解析请求，然后另一个独立程序（经常被触发）与该服务器进程交互，从而获得快速响应效果。这样，我就失去了将解析结果用作python对象的机会。我想知道是否有更好的方法来达到我的目的？
顺便说一句，如果我在12秒之前手动中断我的解析器，那么堆栈跟踪显示它正在递归地调用streamline（）。
谢谢！ 凯文
from pyparsing import *
ALPHA = alphas
DIGIT = nums
HEXDIG = "0123456789ABCDEF"
SafeChar = alphanums + "+-&!_'?@^`~*$\\()%+."
RestChar = ";[]{}:,#<>="
COLON = ":"
DOT = "."
SLASH = "/"
DQUOTE = '"'
SP = " "
HTAB = '\\0x09'
HTAB = ''
EOL = Suppress(lineEnd)
WSP = SP + HTAB
COMMENT = Word(";", SafeChar + RestChar + WSP + '"') + EOL
LWSP = Suppress(Word(WSP))
nonEscapeChar = "}" + srange("[\\0x01-\\0x7c]") #+ srange("[\\0x7E-\\0xFF]")
nonEscapeChar = srange("[\\0x01-\\0x7c]") #+ srange("[\\0x7E-\\0xFF]")
octetString = Word(nonEscapeChar)
quotedString = dblQuotedString
UINT16 = Word(DIGIT, min=1, max=5)
UINT32 = Word(DIGIT, min=1, max=10)
NAME = Word(ALPHA, alphanums + "_", min=1, max=64)
VALUE = quotedString | Word(SafeChar) #| srange("[\\0x80-\\0xFF]")
EQUAL = Suppress("=")
LBRKT = Suppress( "{" )
RBRKT = Suppress( "}" )
COMMA = Suppress(",")
SEP = ((WSP | EOL | COMMENT) + LWSP)
AddToken = Suppress(Literal("Add")| "A")
AndAUDITSelectToken = Suppress(Literal("ANDLgc"))
AuditToken = Suppress(Literal("Audit")| "AT")
AuditCapToken = Suppress(Literal("AuditCapability")| "AC")
AuditValueToken = Suppress(Literal("AuditValue")| "AV")
AuthToken = Suppress(Literal("Authentication")| "AU")
BothToken = Suppress(Literal("Both")| "B")
BothwayToken = Suppress(Literal("Bothway")| "BW")
BriefToken = Suppress(Literal("Brief")| "BR")
BufferToken = Suppress(Literal("Buffer")| "BF")
CtxToken = Suppress(Literal("Context")| "C")
ContextAuditToken = Suppress(Literal("ContextAudit")| "CA")
ContextAttrToken = Suppress(Literal("ContextAttr")| "CT")
ContextListToken = Suppress(Literal("ContextList")| "CLT")
DigitMapToken = Suppress(Literal("DigitMap")| "DM")
DirectionToken = Suppress(Literal("SPADirection")| "SPADI")
DisconnectedToken = Suppress(Literal("Disconnected")| "DC")
DelayToken = Suppress(Literal("Delay")| "DL")
DurationToken = Suppress(Literal("Duration")| "DR")
EmbedToken = Suppress(Literal("Embed")| "EM")
EmergencyToken = Suppress(Literal("Emergency")| "EG")
EmergencyOffToken = Suppress(Literal("EmergencyOff")| "EGO")
EmergencyValueToken = Suppress(Literal("EmergencyValue")| "EGV")
ErrorToken = Suppress(Literal("Error")| "ER")
EventBufferToken = Suppress(Literal("EventBuffer")| "EB")
EventsToken = Suppress(Literal("Events")| "E")
ExternalToken = Suppress(Literal("External")| "EX")
FailoverToken = Suppress(Literal("Failover")| "FL")
ForcedToken = Suppress(Literal("Forced")| "FO")
GracefulToken = Suppress(Literal("Graceful")| "GR")
H221Token = Suppress(Literal("H221"))
H223Token = Suppress(Literal("H223"))
H226Token = Suppress(Literal("H226"))
HandOffToken = Suppress(Literal("HandOff")| "HO")
IEPSToken = Suppress(Literal("IEPSCall")| "IEPS")
ImmAckRequiredToken = Suppress(Literal("ImmAckRequired")| "IA")
InternalToken = Suppress(Literal("Internal")| "IT")
IntsigDelayToken = Suppress(Literal("Intersignal")| "SPAIS")
IsolateToken = Suppress(Literal("Isolate")| "IS")
InSvcToken = Suppress(Literal("InService")| "IV")
InterruptByEventToken = Suppress(Literal("IntByEvent")| "IBE")
InterruptByNewSignalsDescrToken = Suppress(Literal("IntBySigDescr")| "IBS")
IterationToken = Suppress(Literal("Iteration")| "IR")
KeepActiveToken = Suppress(Literal("KeepActive")| "KA")
LocalToken = Suppress(Literal("Local")| "L")
LocalControlToken = Suppress(Literal("LocalControl")| "O")
LockStepToken = Suppress(Literal("LockStep")| "SP")
MediaToken = Suppress(Literal("Media")| "M")
MegacopToken = Suppress(Literal("MEGACO")| "!")
MessageSegmentToken = Suppress(Literal("Segment")| "SM")
MethodToken = Suppress(Literal("Method")| "MT")
MgcIdToken = Suppress(Literal("MgcIdToTry")| "MG")
ModeToken = Suppress(Literal("Mode")| "MO")
ModifyToken = Suppress(Literal("Modify")| "MF")
ModemToken = Suppress(Literal("Modem")| "MD")
MoveToken = Suppress(Literal("Move")| "MV")
MTPToken = Suppress(Literal("MTP"))
MuxToken = Suppress(Literal("Mux")| "MX")
NeverNotifyToken = Suppress(Literal("NeverNotify")| "NBNN")
NotifyToken = Suppress(Literal("Notify")| "N")
NotifyCompletionToken = Suppress(Literal("NotifyCompletion")| "NC")
NotifyImmediateToken = Suppress(Literal("ImmediateNotify")| "NBIN")
NotifyRegulatedToken = Suppress(Literal("RegulatedNotify")| "NBRN")
Nx64kToken = Suppress(Literal("Nx64Kservice")| "N64")
ObservedEventsToken = Suppress(Literal("ObservedEvents")| "OE")
OnewayToken = Suppress(Literal("Oneway")| "OW")
OnewayBothToken = Suppress(Literal("OnewayBoth")| "OWB")
OnewayExternalToken = Suppress(Literal("OnewayExternal")| "OWE")
OnOffToken = Suppress(Literal("OnOff")| "OO")
OrAUDITselectToken = Suppress(Literal("ORLgc"))
OtherReasonToken = Suppress(Literal("OtherReason")| "OR")
OutOfSvcToken = Suppress(Literal("OutOfService")| "OS")
PackagesToken = Suppress(Literal("Packages")| "PG")
#...many literal tokens
TestToken = Suppress(Literal("Test")| "TE")
TimeOutToken = Suppress(Literal("TimeOut")| "TO")
TopologyToken = Suppress(Literal("Topology") | "TP")
TransToken = Suppress(Literal("Transaction") | "T")
ResponseAckToken = Suppress(Literal("TransactionResponseAck")| "K")
V18Token = Suppress(Literal("V18"))
V22Token = Suppress(Literal("V22"))
V22bisToken = Suppress(Literal("V22b"))
V32Token = Suppress(Literal("V32"))
V32bisToken = Suppress(Literal("V32b"))
V34Token = Suppress(Literal("V34"))
V76Token = Suppress(Literal("V76"))
V90Token = Suppress(Literal("V90"))
V91Token = Suppress(Literal("V91"))
VersionToken = Suppress(Literal("Version") | "V")
RSBRKT=Suppress("]")
LSBRKT=Suppress("]")
INEQUAL=Suppress(LWSP+(Literal(">")|"<"|"#")+LWSP)("INEQUAL")
ContextID=Combine((UINT32|"*"|"-"|"$"))("ContextID")
ItemID=NAME("ItemID")
PackageName=NAME("PackageName")
StreamID=UINT16("StreamID")
Time=(Word(DIGIT, exact=8))("Time")
Date=(Word(DIGIT, exact=8))("Date")
RequestID=(UINT32|"*")("RequestID")
digitMapName=NAME("digitMapName")
sigParameterName=NAME("sigParameterName")
signalListId=UINT16("signalListId")
pathDomainName=Group(Word(alphanums+"*",alphanums+"-"+"*"+".",max=64))("pathDomainName")
pathNAME=Combine(Optional("*")+NAME+Word("/"+"*"+alphanums+"_"+"$")+Optional("@"+pathDomainName))("pathNAME")
pkgdName=Combine((PackageName+SLASH+ItemID)|(PackageName+SLASH+"*")|("*"+SLASH+"*"))
alternativeValue=Combine((VALUE|LSBRKT+delimitedList(VALUE, COMMA)+RSBRKT|LBRKT+delimitedList(VALUE, COMMA) +RBRKT|LSBRKT+VALUE+COLON+VALUE+RSBRKT))("alternativeValue")
parmValue=((EQUAL+alternativeValue|INEQUAL+VALUE))("parmValue")
propertyParm=Group(pkgdName+parmValue)("propertyParm")
extensionParameter=Group(Literal("X")+(Literal("-")|"+")+Word(ALPHA+DIGIT,min=1,max=6))("extensionParameter")
contextIdList=Group(ContextListToken+EQUAL+LBRKT+delimitedList(ContextID, COMMA) +RBRKT)("contextIdList")
contextAttrDescriptor=Group(ContextAttrToken+LBRKT+(contextIdList|delimitedList(propertyParm, COMMA))+RBRKT)("contextAttr")
emergencyValue=Group(EmergencyValueToken+EQUAL+(EmergencyToken|EmergencyOffToken))("emergencyValue")
iepsValue=Group(IEPSToken+EQUAL+(Literal("ON")|"OFF"))("iepsValue")
priority=Group(PriorityToken+EQUAL+UINT16)("priority")
topologyDirection=Group(BothwayToken|IsolateToken|OnewayToken|OnewayExternalToken|OnewayBothToken)("topologyDirection")
TerminationID=(Literal("ROOT")|pathNAME|"$"|"*")("TerminationID")
terminationB=(TerminationID)("terminationB")
terminationA=(TerminationID)("terminationA")
eventStream=Group(StreamToken+EQUAL+StreamID)("eventStream")
topologyTriple=Group(terminationA+COMMA+terminationB+COMMA+topologyDirection+Optional(COMMA+eventStream))("topologyTriple")
topologyDescriptor=Group(TopologyToken+LBRKT+delimitedList(topologyTriple, COMMA)+RBRKT)("topology")
statisticsParameter=Group(pkgdName+Optional(EQUAL+VALUE|(LSBRKT+delimitedList(VALUE, COMMA)+RSBRKT)))("statisticsParameter")
statisticsDescriptor=Group(StatsToken+LBRKT+delimitedList(statisticsParameter, COMMA)+RBRKT)("statistics")
TimeStamp=Group(Date+"T"+Time)("TimeStamp")
packagesItem=Group(NAME+"-"+UINT16)("packagesItem")
Version=Group(Word(DIGIT,min=1,max=2))("Version")
packagesDescriptor=Group(PackagesToken+LBRKT+delimitedList(packagesItem, COMMA)+RBRKT)("packages")
extension=Group(extensionParameter+parmValue)("extension")
serviceChangeVersion=Group(VersionToken+EQUAL+Version)("serviceChangeVersion")
serviceChangeProfile=Group(ProfileToken+EQUAL+NAME+SLASH+Version)("serviceChangeProfile")
deviceName=Group(pathNAME)("deviceName")
TransactionID=UINT32("TransactionID")
ErrorCode=Word(DIGIT,min=1,max=4)("ErrorCode")
mtpAddress=Group(MTPToken+LBRKT+Word(HEXDIG,min=4,max=8)+RBRKT)("mtpAddress")
portNumber=Group(UINT16)("portNumber")
hex4=Group(Word(HEXDIG,min=1,max=4))("hex4")
hexseq=Group(hex4+ZeroOrMore(":"+hex4))("hexseq")
hexpart=Group(hexseq+"::"+Optional(hexseq)|"::"+Optional(hexseq)|hexseq)("hexpart")
V4hex=Group(Word(DIGIT,min=1,max=3))("V4hex")
IPv4address=Group(V4hex+DOT+V4hex+DOT+V4hex+DOT+V4hex)("IPv4address")
IPv6address=Group(hexpart+Optional(":"+IPv4address))("IPv6address")
domainAddress=Group(Literal("[")+(IPv4address|IPv6address)+"]")("domainAddress")
domainName=Group("<"+Word(ALPHA+DIGIT,ALPHA+DIGIT+"-"+".",max=64)+">")("domainName")
mId=(((domainAddress|domainName)+Optional(":"+portNumber))|mtpAddress|deviceName)("mId")
sigIntsigDelay=Group(IntsigDelayToken+EQUAL+UINT16)("sigIntsigDelay")
sigRequestID=(RequestIDToken+EQUAL+RequestID)("sigRequestID")
direction=Group(ExternalToken|InternalToken|BothToken)("direction")
sigDirection=Group(DirectionToken+EQUAL+direction)("sigDirection")
sigDuration=Group(DurationToken+EQUAL+UINT16)("sigDuration")
signalType=Group((OnOffToken|TimeOutToken|BriefToken))("signalType")
sigSignalType=Group(SignalTypeToken+EQUAL+signalType)("sigSignalType")
sigOther=Group(sigParameterName+parmValue)("sigOther")
sigStream=Group(StreamToken+EQUAL+StreamID)("sigStream")
signalName=Group(pkgdName)("signalName")
notificationReason=Group(TimeOutToken|InterruptByEventToken|InterruptByNewSignalsDescrToken|OtherReasonToken|IterationToken)("notificationReason")
notifyCompletion=Group(NotifyCompletionToken+EQUAL+(LBRKT+delimitedList(notificationReason, COMMA)+RBRKT))("notifyCompletion")
sigParameter=Group(sigStream|sigSignalType|sigDuration|sigOther|notifyCompletion|KeepActiveToken|sigDirection|sigRequestID|sigIntsigDelay)("sigParameter")
signalRequest=Group(signalName+Optional(LBRKT+delimitedList(sigParameter, COMMA)+RBRKT))("signalRequest")
signalListParm=Group(signalRequest)("signalListParm")
signalList=Group(SignalListToken+EQUAL+signalListId+LBRKT+delimitedList(signalListParm,COMMA)+RBRKT)("signalList")
signalParm=Group(signalList|signalRequest)("signalParm")
signalsDescriptor=Group(SignalsToken+Optional(LBRKT+delimitedList(signalParm,COMMA)+RBRKT))("signals")
serviceChangeMgcId=(MgcIdToken+EQUAL+mId)("serviceChangeMgcId")
serviceChangeAddress=Group(ServiceChangeAddressToken+EQUAL+(mId|portNumber))("serviceChangeAddress")
serviceChangeDelay=Group(DelayToken+EQUAL+UINT32)("serviceChangeDelay")
serviceChangeReason=Group(ReasonToken+EQUAL+VALUE)("serviceChangeReason")
serviceChangeMethod=Group(MethodToken+EQUAL+(FailoverToken|ForcedToken|GracefulToken|RestartToken|DisconnectedToken|HandOffToken|extensionParameter))("serviceChangeMethod")
servChgReplyParm=Group(serviceChangeAddress|serviceChangeMgcId|serviceChangeProfile|serviceChangeVersion|TimeStamp)("servChgReplyParm")
serviceChangeReplyDescriptor=Group(ServicesToken+LBRKT+delimitedList(servChgReplyParm, COMMA)+RBRKT)("serviceChangeReply")
auditReturnItem=Group((MuxToken|ModemToken|MediaToken|DigitMapToken|StatsToken|ObservedEventsToken|PackagesToken))("auditReturnItem")
indAudpackagesDescriptor=Group(PackagesToken+LBRKT+packagesItem+RBRKT)("indAudpackages")
indAudstatisticsDescriptor=Group(StatsToken+LBRKT+pkgdName+RBRKT)("indAudstatistics")
indAuddigitMapDescriptor=Group(DigitMapToken+EQUAL+(digitMapName))("indAuddigitMap")
indAudsignalRequestParm=Group(sigStream|sigRequestID)("indAudsignalRequestParm")
indAudsignalRequest=Group(signalName+Optional(LBRKT+delimitedList(indAudsignalRequestParm, COMMA)+RBRKT))("indAudsignalRequest")
indAudsignalListParm=Group(indAudsignalRequest)("indAudsignalListParm")
indAudsignalList=Group(SignalListToken+EQUAL+signalListId+Optional(LBRKT+indAudsignalListParm+RBRKT))("indAudsignalList")
indAudsignalParm=Group(indAudsignalList|indAudsignalRequest)("indAudsignalParm")
indAudsignalsDescriptor=Group(SignalsToken+LBRKT+Optional(indAudsignalParm)+RBRKT)("indAudsignals")
indAudrequestedEvent=Group(pkgdName)("indAudrequestedEvent")
indAudeventsDescriptor=Group(EventsToken+Optional(EQUAL+RequestID)+LBRKT+indAudrequestedEvent+RBRKT)("indAudevents")
eventParameterName=Group(NAME)("eventParameterName")
eventOther=Group(eventParameterName+parmValue)("eventOther")
indAudeventSpecParameter=Group(eventStream|eventParameterName)("indAudeventSpecParameter")
indAudeventSpec=Group(pkgdName+Optional(LBRKT+indAudeventSpecParameter+RBRKT))("indAudeventSpec")
indAudeventBufferDescriptor=Group(EventBufferToken+LBRKT+indAudeventSpec+RBRKT)("indAudeventBuffer")
serviceStatesValue=Group((TestToken|OutOfSvcToken|InSvcToken))("serviceStatesValue")
indAudterminationStateParm=Group(pkgdName|propertyParm|ServiceStatesToken+Optional((EQUAL|INEQUAL)+serviceStatesValue)|BufferToken)("indAudterminationStateParm")
indAudterminationStateDescriptor=Group(TerminationStateToken+LBRKT+indAudterminationStateParm+RBRKT)("indAudterminationState")
streamModes=(SendonlyToken|RecvonlyToken|SendrecvToken|InactiveToken|LoopbackToken)("Mode")
indAudlocalParm=Group(ModeToken+Optional((EQUAL|INEQUAL)+streamModes)|pkgdName|propertyParm|ReservedValueToken|ReservedGroupToken)("indAudlocalParm")
indAudlocalControlDescriptor=Group(LocalControlToken+LBRKT+delimitedList(indAudlocalParm, COMMA)+RBRKT)("indAudlocalControl")
indAudstreamParm=Forward()
indAudstreamDescriptor=Group(StreamToken+EQUAL+StreamID+LBRKT+indAudstreamParm+RBRKT)("indAudstream")
indAudlocalDescriptor=Group(LocalToken+LBRKT+octetString+RBRKT)("indAudlocal")
indAudremoteDescriptor=Group(RemoteToken+LBRKT+octetString+RBRKT)("indAudremote")
indAudstreamParm<<(indAudlocalControlDescriptor|indAudstatisticsDescriptor|indAudremoteDescriptor|indAudlocalDescriptor)
indAudmediaParm=indAudstreamParm|indAudstreamDescriptor|indAudterminationStateDescriptor
indAudmediaDescriptor=Group(MediaToken+LBRKT+delimitedList(indAudmediaParm, COMMA)+RBRKT)("indAudmedia")
indAudauditReturnParameter=indAudmediaDescriptor|indAudeventsDescriptor|indAudsignalsDescriptor|indAuddigitMapDescriptor|indAudeventBufferDescriptor|indAudstatisticsDescriptor|indAudpackagesDescriptor
indAudterminationAudit=Group(delimitedList(indAudauditReturnParameter, COMMA))("indAudterminationAudit")
auditItem=Group(auditReturnItem|SignalsToken|EventBufferToken|EventsToken|indAudterminationAudit)("auditItem")
serviceChangeParm=Group(serviceChangeMethod|serviceChangeReason|serviceChangeDelay|serviceChangeAddress|serviceChangeProfile|extension|TimeStamp|serviceChangeMgcId|serviceChangeVersion|ServiceChangeIncompleteToken|auditItem)("serviceChangeParm")
serviceChangeDescriptor=Group(ServicesToken+LBRKT+delimitedList(serviceChangeParm,COMMA)+RBRKT)("serviceChange")
digitMapLetter=DIGIT+srange("[\\0x41-\\0x4B]")+srange("[\\0x61-\\0x6B]")+"L"+"S"+"T"+"Z"
digitLetter=Group(Word(DIGIT+"-"+DIGIT)|Word(digitMapLetter))("digitLetter")
digitMapRange=Group((Literal("x")|(LWSP+"["+LWSP+digitLetter+LWSP+"]"+LWSP)))("digitMapRange")
digitPosition=Group(digitMapLetter|digitMapRange)("digitPosition")
digitStringElement=Group(digitPosition+Optional(DOT))("digitStringElement")
digitString=Group(OneOrMore(digitStringElement))("digitString")
digitStringList=Group(digitString+ZeroOrMore(LWSP+"|"+LWSP+digitString))("digitStringList")
digitMap=Group((digitString|LWSP+"("+LWSP+digitStringList+LWSP+")"+LWSP))("digitMap")
Timer=Group(Word(DIGIT,min=1,max=2))("Timer")
digitMapValue=Group(Optional("T"+COLON+Timer+COMMA)+Optional("S"+COLON+Timer+COMMA)+Optional("L"+COLON+Timer+COMMA)+Optional("Z"+COLON+Timer+COMMA)+digitMap)("digitMapValue")
digitMapDescriptor=Group(DigitMapToken+EQUAL+((LBRKT+digitMapValue+RBRKT)| (digitMapName+Optional(LBRKT+digitMapValue+RBRKT))))("digitMap")
modemType=Group(V32bisToken|V22bisToken|V18Token|V22Token|V32Token|V34Token|V90Token|V91Token|SynchISDNToken|extensionParameter)("modemType")
modemDescriptor=Group(ModemToken+((EQUAL+modemType)|(LSBRKT+delimitedList(modemType, COMMA)+RSBRKT))+Optional(LBRKT+delimitedList(propertyParm, COMMA)+RBRKT))("modem")
observedEventParameter=(eventStream|eventOther)
observedEvent=Group(Optional(TimeStamp+LWSP+COLON)+LWSP+pkgdName+Optional(LBRKT+delimitedList(observedEventParameter,COMMA)+RBRKT))("observedEvent")
observedEventsDescriptor=Group(ObservedEventsToken+EQUAL+RequestID+LBRKT+SkipTo(RBRKT)+RBRKT)("observedEvents")
eventDM=Group(DigitMapToken+EQUAL((digitMapName)|(LBRKT+digitMapValue+RBRKT)))("eventDM")
embedSig=Group(EmbedToken+LBRKT+signalsDescriptor+RBRKT)("embedSig")
secondEventParameter=Forward()
secondRequestedEvent=Group(pkgdName+Optional(LBRKT+delimitedList(secondEventParameter, COMMA)+RBRKT))("secondRequestedEvent")
embedFirst=Group(EventsToken+Optional(EQUAL+RequestID+LBRKT+delimitedList(secondRequestedEvent,COMMA)+RBRKT))("embedFirst")
embedNoSig=Group(EmbedToken+LBRKT+embedFirst+RBRKT)("embedNoSig")
embedWithSig=Group(EmbedToken+LBRKT+signalsDescriptor+Optional(COMMA+embedFirst)+RBRKT)("embedWithSig")
notifyRegulated=Group(NotifyRegulatedToken+Optional(LBRKT+(embedWithSig|embedNoSig)+RBRKT))("notifyRegulated")
notifyBehaviour=Group(NotifyImmediateToken|notifyRegulated|NeverNotifyToken)("notifyBehaviour")
eventParameter=Group((embedWithSig|embedNoSig|KeepActiveToken|eventDM|eventStream|eventOther|notifyBehaviour|ResetEventsDescriptorToken))("eventParameter")
secondEventParameter<<(embedSig|KeepActiveToken|eventDM|eventStream|eventOther|notifyBehaviour|ResetEventsDescriptorToken)
requestedEvent=Group(pkgdName+Optional(LBRKT+delimitedList(eventParameter, COMMA)+RBRKT))("requestedEvent")
eventsDescriptor=Group(EventsToken+Optional(EQUAL+RequestID+LBRKT+delimitedList(requestedEvent,COMMA)+RBRKT))("events")
MuxType=Group((H221Token|H223Token|H226Token|V76Token|extensionParameter|Nx64kToken))("MuxType")
serviceStates=Group(ServiceStatesToken+EQUAL+serviceStatesValue)("serviceStates")
eventBufferControlValue=Group(("OFF"|LockStepToken))("eventBufferControlValue")
eventBufferControl=Group(BufferToken+EQUAL+eventBufferControlValue)("eventBufferControl")
terminationStateParm=Group((propertyParm|serviceStates|eventBufferControl))("terminationStateParm")
terminationStateDescriptor=Group(TerminationStateToken+LBRKT+delimitedList(terminationStateParm, COMMA)+RBRKT)("terminationState")
eventSpecParameter=Group((eventStream|eventOther))("eventSpecParameter")
eventSpec=Group(pkgdName+Optional(LBRKT+delimitedList(eventSpecParameter,COMMA)+RBRKT))("eventSpec")
eventBufferDescriptor=Group(EventBufferToken+Optional(LBRKT+delimitedList(eventSpec, COMMA)+RBRKT))("eventBuffer")
remoteDescriptor=(RemoteToken+LBRKT+octetString+RBRKT)("Remote")
localDescriptor=(LocalToken+LBRKT+octetString+RBRKT)("Local")
streamMode=(ModeToken+EQUAL+streamModes)
reservedGroupMode=Group(ReservedGroupToken+EQUAL+(Literal("ON")|"OFF"))("reservedGroupMode")
reservedValueMode=Group(ReservedValueToken+EQUAL+(Literal("ON")|"OFF"))("reservedValueMode")
localParm=(streamMode|propertyParm|reservedValueMode|reservedGroupMode)
localControlDescriptor=Group(LocalControlToken+LBRKT+delimitedList(localParm,COMMA)+RBRKT)("LocalControl")
localControlDescriptor=Group(LocalControlToken+LBRKT+octetString+RBRKT)("LocalControl")
streamParm=(localDescriptor|remoteDescriptor|localControlDescriptor|statisticsDescriptor)
streamDescriptor=Group(StreamToken+EQUAL+StreamID+LBRKT+delimitedList(streamParm, COMMA)+RBRKT)("Stream")
mediaParm=streamParm|streamDescriptor|terminationStateDescriptor
mediaDescriptor=Group(MediaToken+LBRKT+delimitedList(mediaParm, COMMA)+RBRKT)("Media")
terminationIDList=Group(LBRKT+delimitedList(TerminationID, COMMA)+RBRKT)("terminationIDList")
muxDescriptor=Group(MuxToken+EQUAL+MuxType+terminationIDList)("mux")
termIDList=Group((TerminationID|LSBRKT+TerminationID+OneOrMore(COMMA+TerminationID)+RSBRKT))("termIDList")
errorDescriptor=Group(ErrorToken+EQUAL+ErrorCode+LBRKT+Optional(quotedString)+RBRKT)("error")
serviceChangeReply=Group(ServiceChangeToken+EQUAL+termIDList+Optional(LBRKT+(errorDescriptor|serviceChangeReplyDescriptor)+RBRKT))("serviceChangeReply")
serviceChangeRequest=Group(ServiceChangeToken+EQUAL+termIDList+LBRKT+serviceChangeDescriptor+RBRKT)("serviceChangeRequest")
notifyReply=Group(NotifyToken+EQUAL+termIDList+Optional(LBRKT+errorDescriptor+RBRKT))("notifyReply")
notifyRequest=Group(NotifyToken+EQUAL+termIDList+LBRKT+(observedEventsDescriptor+Optional(COMMA+errorDescriptor))+RBRKT)("notifyRequest")
auditDescriptor=Group(AuditToken+LBRKT+Optional(delimitedList(auditItem,COMMA))+RBRKT)("audit")
auditReturnParameter=(mediaDescriptor|modemDescriptor|muxDescriptor|eventsDescriptor|signalsDescriptor|digitMapDescriptor|observedEventsDescriptor|eventBufferDescriptor|statisticsDescriptor|packagesDescriptor|errorDescriptor|auditReturnItem)
contextTerminationAudit=Group(EQUAL+CtxToken+(terminationIDList|LBRKT+errorDescriptor+RBRKT))("contextTerminationAudit")
terminationAudit=Group(delimitedList(auditReturnParameter,COMMA))("terminationAudit")
auditOther=Group(EQUAL+termIDList+Optional(LBRKT+terminationAudit+RBRKT))("auditOther")
auditReply=Group((AuditValueToken|AuditCapToken)+(contextTerminationAudit|auditOther))("auditReply")
auditRequest=Group((AuditValueToken|AuditCapToken)+EQUAL+termIDList+LBRKT+auditDescriptor+RBRKT)("auditRequest")
subtractRequest=Group(SubtractToken+EQUAL+termIDList+Optional(LBRKT+auditDescriptor+RBRKT))("subtractRequest")
ammsReply=Group((AddToken|MoveToken|ModifyToken|SubtractToken)+EQUAL+termIDList+Optional(LBRKT+terminationAudit+RBRKT))("ammsReply")
ammParameter=mediaDescriptor|modemDescriptor|muxDescriptor|eventsDescriptor|signalsDescriptor|digitMapDescriptor|eventBufferDescriptor|auditDescriptor|statisticsDescriptor
ammRequestBody=EQUAL+termIDList+Optional(LBRKT+delimitedList(ammParameter, COMMA)+RBRKT)
ammRequest=Group((MoveToken|ModifyToken)+ ammRequestBody )("ammRequest")
addRequest=Group(AddToken + ammRequestBody)("Add")
segmentNumber=UINT16("segmentNumber")
segmentReply=Group(MessageSegmentToken+EQUAL+TransactionID+SLASH+segmentNumber+Optional(SLASH+SegmentationCompleteToken))("segmentReply")
commandRequest=addRequest| ammRequest | subtractRequest|auditRequest|notifyRequest|serviceChangeRequest
commandRequestList=delimitedList(Optional("O-")+Optional("W-")+commandRequest, COMMA)
AndAUDITselectToken=Group(Literal("TODO"))("AndAUDITselectToken")
OrAUDITselectToken=Group(Literal("TODO"))("OrAUDITselectToken")
auditSelectLogic=Group(Optional(AndAUDITselectToken|OrAUDITselectToken))("auditSelectLogic")
contextAuditSelector=Group(priority|emergencyValue|iepsValue|contextAttrDescriptor|auditSelectLogic)("contextAuditSelector")
contextAuditProperties=Group((TopologyToken|EmergencyToken|PriorityToken|IEPSToken|pkgdName|contextAuditSelector))("contextAuditProperties")
indAudcontextAttrDescriptor=Group(ContextAttrToken+LBRKT+delimitedList(contextAuditProperties, COMMA)+RBRKT)("indAudcontextAttr")
contextAudit=Group(ContextAuditToken+LBRKT+(delimitedList(contextAuditProperties,COMMA))|indAudcontextAttrDescriptor+RBRKT)("contextAudit")
contextProperty=Group((topologyDescriptor|priority|EmergencyToken|EmergencyOffToken|iepsValue|contextAttrDescriptor))("contextProperty")
contextProperties=Group(delimitedList(contextProperty,COMMA))("contextProperties")
commandReplys=(serviceChangeReply|auditReply|ammsReply|notifyReply)
commandReplyList=Group(delimitedList(commandReplys,COMMA))("commandReplyList")
commandReply=Group(((contextProperties+Optional(COMMA+commandReplyList))|commandReplyList))("commandReply")
actionReply=Group(CtxToken+EQUAL+ContextID+Optional(LBRKT+(errorDescriptor|commandReply|(commandReply+COMMA+errorDescriptor))+RBRKT))("actionReply")
actionReplyList=Group(delimitedList(actionReply,COMMA))("actionReplyList")
transactionReply=Group(ReplyToken+EQUAL+TransactionID+Optional(SLASH+segmentNumber+Optional(SLASH+SegmentationCompleteToken))+LBRKT+Optional(ImmAckRequiredToken+COMMA)+(errorDescriptor|actionReplyList)+RBRKT)("TransactionReply")
contextRequest=Group(((contextProperties+Optional(COMMA+contextAudit))|contextAudit))("contextRequest")
actionRequest=Group(CtxToken+EQUAL+ContextID+LBRKT+((contextRequest+Optional(COMMA+commandRequestList))|commandRequestList)+RBRKT)("actionRequest")
transactionRequest=Group(TransToken+EQUAL+TransactionID+LBRKT+delimitedList(actionRequest, COMMA)+RBRKT)("TransactionRequest")
transactionAck=Group(TransactionID|(TransactionID+"-"+TransactionID))("TransactionAck")
transactionResponseAck=Group(ResponseAckToken+LBRKT+transactionAck+ZeroOrMore(COMMA+transactionAck)+RBRKT)("transactionResponseAck")
transactionPending=Group(PendingToken+EQUAL+TransactionID+LBRKT+RBRKT)("transactionPending")
transactionList=OneOrMore(transactionRequest|transactionReply|transactionPending|transactionResponseAck|segmentReply)
messageBody=(transactionList | errorDescriptor)
Message=Group(MegacopToken+SLASH+Version+SkipTo(lineEnd)+messageBody)("Message")
AuthData=Group("0x"+Word(HEXDIG,min=24,max=64))("AuthData")
SequenceNum=Group("0x"+Word(HEXDIG,exact=8))("SequenceNum")
SecurityParmIndex=Group("0x"+Word(HEXDIG,exact=8))("SecurityParmIndex")
authenticationHeader=Group(AuthToken+EQUAL+SecurityParmIndex+COLON+SequenceNum+COLON+AuthData)("authenticationHeader")
megacoMessage=Group(LWSP+Optional(authenticationHeader+SEP)+Message)("megacoMessage").streamline()
答案 0 :(得分：1)
您是否尝试过腌制解析器？我之前使用复杂的解析器（对于Python本身）已经完成了这项工作，并且在启动时间方面得到了合理的改进。将pickle解析器保存到文件中，然后解析单个消息，从文件中取消解析器而不是显式构建它。如果简化是设置的一个昂贵的部分，那么一定要在酸洗之前调用parser.streamline() - 然后在实际解析消息时，可以跳过这个昂贵的简化步骤。
如果您没有定义低级基元，而是一遍又一遍地显式重新定义相同的表达式，那么构建解析器也可能效率低下。例如，重复使用Word(nums)，而不是定义低级表达式integer = Word(nums)，然后在需要整数的位置引用integer。这很难在解析器构建时产生影响（我只看到另一个人实际上有这个问题），但它可能会发生。
您是否正在使用函数来定义遵循模式的复杂子解析器？尝试记住该函数，以便使用相同参数的重复调用返回相同的解析表达式而不是新表达式。然后，这些重复的表达式只会简化一次。
您是否有一个复杂的低级表达式，用于许多具有不同结果名称的地方？这实际上将创建该表达式的副本。您可以显式调用streamline作为定义步骤的一部分，并且副本将提前简化。如果你有一个真实数字的表达式，我可以设想这种事情。事实上，如果你用一个正则表达式（Combine(Optional(oneOf('- +')) + Word(nums) + Optional('.' + Word(nums)) + Optional(oneOf('E e') + Optional(oneOf('- +')) + Word(nums))组装pyparsing位（类似Regex(r'[-+]?\d+(\.\d*)?([Ee][-+]?\d+)?')）来替换一个实数定义，我已经看到了显着的分析时间改进（AddToken = Suppress(Literal("Add")| "A")
将对应于前一个表达）。不需要过分关注这一点，pyparsing将解析器表达式的许多内部表示作为正则表达式。
嗯，这就是我所能提出的所有问题 - 对于更具体的建议，你需要将你的500线路贴在某个地方的贴纸上，这样我们就可以看到正在发生的事情的细节。
编辑： 你可以做的一件事是尝试替换所有的文字定义，如：
AddToken = oneOf("Add A").suppress()
带
digitLetter=Group(Word(DIGIT+"-"+DIGIT)|Word(digitMapLetter))("digitLetter")
这将大大减少解析器中元素的数量，因此可以简化或腌制的位数更少。
这看起来像是一个错误：
Word(WSP)没有理由在Word定义中重复DIGIT字符串。
不要创建包含空格的单词，您很可能会阅读超出预期的内容。您对LWSP的使用看起来也不合适，因为您正在尝试自己的空白跳过。如果必须执行此操作，请将White(WSP)更改为COMMENT = ';' + restOfLine + lineEnd
。但实际上，你为什么要自己进行空白跳过？
将评论更改为：
{{1}}