thank you! I want us YACC or Antlr tools to translate the ASN.1 desciption to C data structures. So I want some text of ASN.1 which can be the input of YACC or Antlr.
----- Original Message ----- From: Rick Reed TSE <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, January 21, 2002 10:51 PM Subject: Re: [ASN.1] bnf of ASN.1 > QinPeng at [EMAIL PROTECTED] wrote on 21/01/2002 04:50: > > > Hi,all! > > Where can I find the BNF description of ASN.1? > > the BNF description of X.680 is not a gathered one. > > > > The answer to this question depends on exactly what YOU mean by "bnf". > > Unlike ASN.1, there is no single bnf standard (as far as I am aware). > > The notation used for specifying the collection of sequences of items > which form valid instances of the ASN.1 notation is defined in X.680 clause > 5. > > Whether this is "bnf" is a matter of opinion, but it should be possible to > extract the text of the production rules from the X.680 series and > systematically process these into other forms. > > It is under discussion within ITU-T SG17 whether to define a standard for > syntax production rules (possibly in a form that can be directly processed > by a parser generator) to be used within SG17 standards, so that there is at > least some consistency within (part) of ITU-T. However, even if it is agreed > to proceed with such a standard, it would be a separate decision for each > existing notation whether to change the production rules in the > Recommendation(s) for the notation to this form. > > -- > Rick Reed - [EMAIL PROTECTED] > Tel:+44 1455 55 96 55 Fax:+44 1455 55 96 58 Mob.:+44 7970 50 96 50 > >
