import org.jf.dexlib2.iface.instruction.SwitchPayload; //导入依赖的package包/类
private boolean parseDestinations(BasicBlockInstruction bbinsn, List<Integer> leaders, Map<Integer, Integer> switchMap) {
	int offset = -1;
	switch(bbinsn.instruction.getOpcode()) {
    	case PACKED_SWITCH_PAYLOAD:		// switch payloads
    	case SPARSE_SWITCH_PAYLOAD:	
    		Integer sourceAddress = switchMap.get(bbinsn.address);
    		if(sourceAddress != null) {
				for(SwitchElement switchElement : ((SwitchPayload) bbinsn.instruction).getSwitchElements()){
					offset = switchElement.getOffset() + (int)sourceAddress;
					if(bbinsn.destinations == null)
						bbinsn.destinations = new ArrayList<Integer>();
					bbinsn.destinations.add(offset);
					if(!leaders.contains(offset))
						leaders.add(offset);
				}
			}
			break;
		case RETURN_VOID:				// returns
		case RETURN:
		case RETURN_WIDE:
		case RETURN_OBJECT:
			break;
		case GOTO:						// gotos
		case GOTO_16:
		case GOTO_32:
			if(bbinsn.destinations == null)
				bbinsn.destinations = new ArrayList<Integer>();
			offset = ((OffsetInstruction) bbinsn.instruction).getCodeOffset() + bbinsn.address;
			bbinsn.destinations.add(offset);
			if(!leaders.contains(offset))
				leaders.add(offset);

			break;
		case PACKED_SWITCH:				// switches (to payload)
		case SPARSE_SWITCH:
			offset = ((OffsetInstruction) bbinsn.instruction).getCodeOffset();
			switchMap.put(bbinsn.address+offset, bbinsn.address);
		case IF_EQ:						// ifs reg cmp reg
		case IF_NE:
		case IF_LT:
		case IF_GE:
		case IF_GT:
		case IF_LE:
		case IF_EQZ: 					// ifs reg cmp zero
		case IF_NEZ:
		case IF_LTZ:
		case IF_GEZ:
		case IF_GTZ:
		case IF_LEZ:
			if(bbinsn.destinations == null)
				bbinsn.destinations = new ArrayList<Integer>();

			offset = ((OffsetInstruction) bbinsn.instruction).getCodeOffset() + bbinsn.address;
			if(!leaders.contains(offset))
				leaders.add(offset);
			bbinsn.destinations.add(offset);
			
			offset = bbinsn.address + bbinsn.instruction.getCodeUnits();
			if(!leaders.contains(offset))
				leaders.add(offset);
			bbinsn.destinations.add(offset);
			
			break;
	}

	return true;
}