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diff --git a/lib/asn1/src/notes_history.sgml b/lib/asn1/src/notes_history.sgml new file mode 100644 index 0000000000..107459b37d --- /dev/null +++ b/lib/asn1/src/notes_history.sgml @@ -0,0 +1,100 @@ +<!doctype chapter PUBLIC "-//Stork//DTD chapter//EN"> +<!-- + ``The contents of this file are subject to the Erlang Public License, + Version 1.1, (the "License"); you may not use this file except in + compliance with the License. You should have received a copy of the + Erlang Public License along with this software. If not, it can be + retrieved via the world wide web at http://www.erlang.org/. + + Software distributed under the License is distributed on an "AS IS" + basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See + the License for the specific language governing rights and limitations + under the License. + + The Initial Developer of the Original Code is Ericsson Utvecklings AB. + Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings + AB. All Rights Reserved.'' + + $Id$ +--> +<chapter> + <header> + <title>ASN1 Release Notes (Old)</title> + <prepared>Kenneth Lundin</prepared> + <responsible>Kenneth Lundin</responsible> + <docno></docno> + <approved>Kenneth Lundin</approved> + <checked>Kenneth Lundin</checked> + <date>98-02-02</date> + <rev>A</rev> + <file>notes_history.sgml</file> + </header> + + <p>This document describes the changes made to old versions of the <c>asn1</c> application. + + <section> + <title>ASN1 0.8.1</title> + <p>This is the first release of the ASN1 application. This version is released + for beta-testing. Some functionality will be added until the 1.0 version is + released. A list of missing features and restrictions can be found in the + chapter below. + + <section> + <title>Missing features and other restrictions</title> + <list> + <item> + <p>The encoding rules BER and PER (aligned) is supported. <em>PER (unaligned) + IS NOT SUPPORTED</em>. + <item> + <p>NOT SUPPORTED types <c>ANY</c> and <c>ANY DEFINED BY</c> + (is not in the standard any more). + <item> + <p>NOT SUPPORTED types <c>EXTERNAL</c> and <c>EMBEDDED-PDV</c>. + <item> + <p>NOT SUPPORTED type <c>REAL</c> (planned to be implemented). + <item> + <p>The code generation support for value definitions in the ASN.1 notation is very limited + (planned to be enhanced). + <item> + <p>The support for constraints is limited to: + <list> + <item><p> + SizeConstraint SIZE(X) + <item><p> + SingleValue (1) + <item><p> + ValueRange (X..Y) + <item><p> + PermittedAlpabet FROM (but not for BMPString and UniversalString when generating PER). + </list> + <p>Complex expressions in constraints is not supported (planned to be extended). + <item> + <p>The current version of the compiler has very limited error checking: + <list> + <item><p>Stops at first syntax error. + <item><p>Does not stop when a reference to an undefined type is found , + but prints an error message. Compilation of the generated + Erlang module will then fail. + <item><p>A whole number of other semantical controls is currently missing. This + means that the compiler will give little or bad help to detect what's wrong + with an ASN.1 specification, but will mostly work very well when the + ASN.1 specification is correct. + </list> + <item> + <p>The maximum INTEGER supported in this version is a signed 64 bit integer. This + limitation is probably quite reasonable. (Planned to be extended). + <item> + <p>Only AUTOMATIC TAGS supported for PER. + <item> + <p>Only EXPLICIT and IMPLICIT TAGS supported for BER. + <item> + <p>The compiler supports decoding of BER-data with indefinite length but it is + not possible to produce data with indefinite length with the encoder. + </list> + </section> + + </section> +</chapter> + + + |