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path: root/lib/asn1/src/asn1rtt_ber.erl
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2016-03-15update copyright-yearHenrik Nord
2015-11-30BER: Fix encoding of empty named BIT STRINGBjörn Gustavsson
Encoding an empty named BIT STRING would fail for BER. Noticed-by: Svilen Ivanov
2015-06-18Change license text to APLv2Bruce Yinhe
2014-06-05BER: Eliminate dialyzer warning for encoding of BIT STRINGsBjörn Gustavsson
2014-06-05BER: Optimize encoding of ENUMERATEDBjörn Gustavsson
This will also eliminate a dialyzer warning.
2014-06-05BER: Remove a redundant clause in encoding of open typesBjörn Gustavsson
The clause is just an optimization for a (extremly rare) special case. Removing it will eliminate a dialyzer warning.
2014-05-06BER: Optimize decoding of ENUMERATEDBjörn Gustavsson
2014-04-29BER: Inline testing of constraints when decodingBjörn Gustavsson
Calling library routines for validation of constraints may cause dialyzer warnings if some type of constraints handled by the library routine are not used in a specific ASN.1 module. To avoid those warnings (and slightly speed up the decoding), inline the constraint checking.
2014-01-24Fix OCTET STRINGBjörn Gustavsson
2014-01-24Fix BIT STRINGBjörn Gustavsson
2013-08-30Refactor encoding of REALBjörn Gustavsson
To facilitate optimizing PER encoding using an intermediate format, we must change asn1rtt_real_common:encode_real/1 so that it only returns the encoded binary.
2013-05-31BER: Remove special case handling of certain string typesBjörn Gustavsson
ObjectDescriptor, UTCTime, and GeneralizedTime are not special and can be handled in the same way as all other restricted string types.
2013-05-31BER: Optimize handling of constraints for INTEGERsBjörn Gustavsson
This slight optimization will also eliminate some Dialyzer warnings.
2013-05-31Normalize SIZE constraints to simplify backendsBjörn Gustavsson
2013-05-31Correct encoding (decoding) of lengths less than the root rangeBjörn Gustavsson
Given the type: S ::= IA5String (SIZE (5, ...)) attempting to encode (to PER/UPER) a string shorter than 5 characters would fail. Similarly, attempting to decode such string in the BER format would fail. In the case of BER, we can do no range checks if the size constraint is extensible.
2013-02-16Eliminate use of obsolete size/1 in generated codeBjörn Gustavsson
It is recommended to use byte_size/1 or tuple_size/1 instead of size/1.
2013-01-25Update copyright yearsBjörn-Egil Dahlberg
2013-01-23By default, encode BIT STRING to bitstringsBjörn Gustavsson
Add the option 'legacy_bit_string' to decode to the old list format.
2013-01-22Teach encode functions to accept a bitstring term for a BIT STRINGBjörn Gustavsson
We do it in the simplest possible way by converting the bitstring to a compact bitstring tuple. The encoding of BIT STRINGs should be cleaned up and optimized.
2013-01-22BER run-time: Refactor decoding of string data typesBjörn Gustavsson
In the BER run-time code (asn1rtt_ber), there is a general function for decoding a string: decode_restricted_string(Tlv, Range, StringType, TagsIn) But the StringType argument is not important. It is only used internally in asn1rtt_ber to distinguish universal strings and BMP strings from other strings. By slightly refactoring the string decoding code, we can eliminate the StringType argument and a subsequent run-time test on the string type. That will slightly reduce code size, slightly increase speed, and eliminate Dialyzer warnings.
2013-01-22Refactor decoding of BIT STRINGsBjörn Gustavsson
Refactor decoding of BIT STRINGs so that the run-time code does not spend testing conditions that are known already at compile-time (which wastes time and produces unnecessary Dialyzer warnings). There are three ways to decode BIT STRINGs: 1) To a list of bit names (and {bit,Position} for unnamed positions) if the BIT STRING type has any bit names. 2a) To a list of ones and zeros if there are no named bits, and the compact_bit_string option was NOT given. 2b) To a {Unused,Bin} tuple if there are no named bits compact_bit_string option WAS given. Structure the decoding functions in the same way.
2013-01-22Correct error handling for the NIF functionsBjörn Gustavsson
Also make sure that the error handling is contained within the asn1rt_nif module and does not leak out to generated code.
2013-01-22Add run-time library templates and use themBjörn Gustavsson
The template modules (asn1rtt_*.erl) are based on the existing run-time modules, but with some simplifications and improvements, for example: The run-time functions for BER encoding took a Constraint argument which was not used. It has been eliminated, along with the unused StringType argument for the encode_restricted_string function. The Range argument for decode_enumerated() has been dropped since it was not used.