Re: [ASN.1] the problem about information object class of ASN.1

[Rajul Gupta]

Hi,

Information Object Classes are not exactly like the classes of object
oriented languages. These don't support inheritance, or any static members.
However, you can define functions using information object classes (This
also is not like methods in C++ or Java classes)

For example,

FUNCTION ::= CLASS {
    &Type,
    &ResultType    DEFAULT NULL,
    &code          INTEGER UNIQUE
}

Then you can have information objects of above class just like functions.

add FUNCTION ::= {
    &Type SEQUENCE { first INTEGER, second INTEGER },
    &ResultType INTEGER,
    &code       1
}

multiply FUNCTION ::= {
    &Type SEQUENCE { first INTEGER, second INTEGER },
    &ResultType INTEGER,
    &code       2
}

...
...

You can get more information about this from lot of places on the web.
www.oss.com has two ASN.1 books available for free download, which contain
very good info about Information Object Classes.

Rajul

----- Original Message -----
From: "chuchun" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Friday, September 27, 2002 9:11 PM
Subject: [ASN.1] the problem about information object class of ASN.1


> I want to define object with ASN.1,but I am not sure whether information
object class can define object oriented.say,can information object class
show inheritance and contain static property and function? Thank you .
>
> ����������������chuchun
> ����������������[EMAIL PROTECTED]
> ��������������������2002-09-28
>
>
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>