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For each ASN.1 production defined in the ASN.1 source file, a decode method may be generated. This method will decode an ASN.1 message into public member variables within the Java object.
As was the case for encode methods, a decode method is only generated if it is required to alter the behavior of the base class. The Java model is built on inheritance from a set of common run-time base classes. These run-time classes contain default implementations of encode/decode methods that handle the encoding/decoding of the basic types.
As of version 7.3, ASN1C supports ITU-T X.697 JER. BACKWARD COMPATIBILITY: Prior versions (starting with asn1c 6.6) used proprietary encoding rules for JSON, as this work predated the development of ITU-T X.697. If you need to work with our proprietary encoding rules, you must use the command-line arguments -compat 729 (or an older version number). We urge you to upgrade to using X.697 JER.
Our proprietary rules, and differences with X.697, are available on our website.