decoder.py 文件源码

def indefLenValueDecoder(self, fullSubstrate, substrate, asn1Spec, tagSet,
                     length, state, decodeFun, substrateFun):
        r = self._createComponent(asn1Spec, tagSet)
        if substrateFun:
            return substrateFun(r, substrate, length)
        if r.getTagSet() == tagSet: # explicitly tagged Choice
            component, substrate = decodeFun(substrate, r.getComponentTagMap())
            # eat up EOO marker
            eooMarker, substrate = decodeFun(substrate, allowEoo=True)
            if not eoo.endOfOctets.isSameTypeWith(eooMarker) or \
                    eooMarker != eoo.endOfOctets:
                raise error.PyAsn1Error('No EOO seen before substrate ends')
        else:
            component, substrate= decodeFun(
                substrate, r.getComponentTagMap(), tagSet, length, state
            )
        if isinstance(component, univ.Choice):
            effectiveTagSet = component.getEffectiveTagSet()
        else:
            effectiveTagSet = component.getTagSet()
        r.setComponentByType(effectiveTagSet, component, 0, asn1Spec is None)
        return r, substrate