decoder.py 文件源码

def indefLenValueDecoder(self, fullSubstrate, substrate, asn1Spec, tagSet,
                             length, state, decodeFun, substrateFun):
        asn1Object = self._createComponent(asn1Spec, tagSet)
        if substrateFun:
            return substrateFun(asn1Object, substrate, length)
        if asn1Object.tagSet == tagSet:  # explicitly tagged Choice
            component, substrate = decodeFun(substrate, asn1Object.componentType.tagMapUnique)
            # eat up EOO marker
            eooMarker, substrate = decodeFun(substrate, allowEoo=True)
            if eooMarker is not eoo.endOfOctets:
                raise error.PyAsn1Error('No EOO seen before substrate ends')
        else:
            component, substrate = decodeFun(
                substrate, asn1Object.componentType.tagMapUnique, tagSet, length, state
            )
        effectiveTagSet = component.effectiveTagSet
        asn1Object.setComponentByType(
            effectiveTagSet, component,
            verifyConstraints=False,
            matchTags=False, matchConstraints=False,
            innerFlag=False
        )
        return asn1Object, substrate