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path: root/lib/asn1/src/asn1ct_gen.erl
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2016-03-15update copyright-yearHenrik Nord
2016-02-12asn1: Suppress warnings for improper lists in generated codeBjörn Gustavsson
2015-06-18Change license text to APLv2Bruce Yinhe
2015-03-12Merge branch 'maint'Björn Gustavsson
* maint: asn1ct_gen: Correct generation of .hrl files for multiple ellipses Fix BER code generation
2015-03-06asn1ct_gen: Correct generation of .hrl files for multiple ellipsesBjörn Gustavsson
2015-01-12Clean up use of asn1ct_gen:gen_types()Björn Gustavsson
asn1ct_gen:gen_types/3 is called by gen_encode_constructed/4 and generates encode *and* decode functions for any nested types. To faciliate future rewriting, where we might want to tweak code generation for encode and decode separately, refactor the code so that gen_encode_constructed/4 will only encode functions for nested types, and gen_deccode_constructed/4 will generate decode functions for nested types.
2014-06-05BER: Eliminate dialyzer warnings for specialized decode functionsBjörn Gustavsson
2014-06-05Correct OCTET STRING default when legacy_erlang_types is activeBjörn Gustavsson
The default value for an OCTET STRING when legacy_erlang_types was active would be a binary instead of a list.
2014-06-05Remove old DEFAULT-checking code made obsolete in the previous commitBjörn Gustavsson
2014-05-06BER: Suppress dialyzer warnings for encode_bit_string/4Björn Gustavsson
We don't want to touch the code used for encoding BIT STRINGs when 'legacy_erl_types' is active, since it will be removed within two or three major releases. But we do want to suppress the dialyzer warnings in the meantime. The easiest way is to call encode_bit_string/4 with unknown types from an exported function that is never actually called like this: -export(['dialyzer-suppressions'/0]). 'dialyzer-suppressions'(Arg) -> {A,B,C,D} = Arg, encode_bit_string(A, B, C, D), ok.
2014-04-16Remove unused arguments for asn1ct_gen_ber_bin_v2:gen_dec_prim()Björn Gustavsson
Make the source code a little bit cleaner.
2014-04-16Add missing newline in -export()Björn Gustavsson
A newline was forgotten.
2014-03-21Protect generated .hrl files from multiple inclusionsBjörn Gustavsson
2014-01-31asn1ct_gen: Silence dialyzer warnings for unmatched returnsBjörn Gustavsson
2014-01-24Add legacy_erlang_typesBjörn Gustavsson
2014-01-20Introduce asn1ct_gen:open_output_file/1Björn Gustavsson
2013-10-01Fix broken handling of default values for BIT STRINGsBjörn Gustavsson
For DER/PER/UPER, a value equal to the DEFAULT is not supposed to be encoded. BIT STRINGs values can be represented as Erlang terms in four different ways: as an integer, as a list of zeroes and ones, as a {Unused,Binary} tuple, or as an Erlang bitstring. When encoding a BIT STRING, only certain representations of BIT STRINGs values were recognized. All representations must be recognized. When decoding a DEFAULT value for a BIT STRING, the actual value given in the decoding would be either an integer or a list of zeroes and one (depending on how the literal was written in the specification). We expect that the default value should be in the same representation as any other BIT STRING value (i.e. by default an Erlang bitstring, or a list if the 'legacy_bitstring' option has been given, or as compact bitstring if 'compact_bitstring' has been given).
2013-09-27Teach the ASN.1 compiler the no_ok_wrapper optionBjörn Gustavsson
Add the no_ok_wrapper option so that the generated M:encode/2 and M:decode/2 functions will not wrap a successful return value in an {ok,...} tuple. Errors will cause exceptions. Eliminating the wrapping tuple allows simpler nesting of calls.
2013-09-27Optimize the generated decode/2 functionBjörn Gustavsson
Use 'try' instead of 'catch', and don't match anything that cannot actually be returned from the generated encoding code.
2013-09-18asn1ct_gen: Clean up process dictionary after generatingBjörn Gustavsson
Cleanliness.
2013-09-03PER, UPER: Optimize table constraintsBjörn Gustavsson
The generated code for table constraints has several problems: * For each object set, a function for getting an encoding or decoding fun is generated, regardless of whether it is actually used. In many specifications, the object set actually used is the union of several other object sets. That means that the code can become a lot bulkier than it would need to be. * The funs are not necessary. The funs just add to the code bloat and generate more unnecessary garbage at run-time. Also, one of the arguments of the fun is the name of the field in the class which is known at compile-time, and the fun for decoding has unused arguments. How to fix the problems: At each call site where an open type should be encoded/decoded, call a specific generated function specialized for the actual object set and the name of the field in the class. When generating the specialized functions, make sure that we re-use a previously generated function if possible.
2013-08-30PER,UPER: Get rid of unused 'telltype' argument in decoding functionsBjörn Gustavsson
2013-08-30Optimize the generated encode/2 functionBjörn Gustavsson
Use 'try' instead of 'catch', and don't match anything that cannot actually be returned from the generated encoding code.
2013-08-30Remove broken support for multiple UNIQUEBjörn Gustavsson
According to the ASN.1 standard, having multiple UNIQUE in class is allowed. For example: C ::= CLASS { &id1 INTEGER UNIQUE, &id2 INTEGER UNIQUE } In practice, no one uses multiple UNIQUE. The ASN.1 compiler will crash if a class with multiple UNIQUE is used, but the backends have half-hearted support for multiple UNIQUE in that they generate helper functions similar to: getenc_OBJECT_SET(id1, 42) -> fun enc_XXX/3; ... Since we have no plans to implement support for multiple UNIQUE (no one seems to have missed it), simplify the helper functions like this: getenc_OBJECT_SET(42) -> fun enc_XXX/3; ...
2013-05-31PER: Generate code for deep table constraints at compile-timeBjörn Gustavsson
For the PER backends, generate code for accessing deep table constraints at compile-time in the same way as is done for BER. While at it, remove the complicated indentation code. Also modernize the test suite and add a test for a deeper nested constraint.
2013-05-31Eliminate the {notype,_} return value from asn1ct_gen:type/1Björn Gustavsson
The last clause in asn1ct_gen:type/1 does a catched call to type2/1. If the type2/1 fails {notype,X} is returned. Since the body of type2/1 essentially is: case lists:member(X, [...]) of true -> {primitive,bif}; false -> case lists:member(X, [...]) of true -> {constructed,bif}; false -> {undefined,user} end end there is no way that type2/1 can fail. Therefore, we can eliminate the catch and put the body of type2/1 into the last clause of type/1. We can also eliminate the code in the callers of type/1 that match {notype,X}.
2013-05-31asn1ct, asn1ct_gen: Eliminate unused exportsBjörn Gustavsson
Stop export functions that are not called from outside their module. If the functions are not used at all, remove the functions too. The unused exports were found by running: xref:start(s). xref:add_application(s, code:lib_dir(asn1)). io:format("~p\n", [xref:analyze(s, exports_not_used)]).
2013-05-31Open the output file in raw mode with delayed writeBjörn Gustavsson
This change brings down the execution time on my computer for the entire asn1 test suite from about 340 seconds to 310 seconds.
2013-05-31Generate one call to io:put_chars/2 for each call to asn1ct_gen:emit/1Björn Gustavsson
asn1ct_gen:emit/1 used to make one call to io:put_chars/2 for each part of the term passed emit/1. By collecting all output into one iolist for each call emit/1 the time for running the entire asn1 test suite is reduced from about 460 seconds to 340 seconds on my computer.
2013-05-31Get rid of 'ANY' in the backendsBjörn Gustavsson
asn1ct_check has translated all occurrences of 'ANY' to 'ASN1_OPEN_TYPE'.
2013-05-31Eliminate general use of #typereference{}Björn Gustavsson
The record #typereference{} is only used internally within the asn1ct_parser2 module (the parser translates it to an #'Externaltypereference{} record).
2013-05-31PER/UPER: Share all code except encoding of primitivesBjörn Gustavsson
The only code that is really different between the PER and UPER backends is encoding of primitive types.
2013-02-14der: Correct code generation for checking of empty setsBjörn Gustavsson
The ASN.1 compiler would generate an Erlang module with incorrect syntax for: T DEFINITIONS AUTOMATIC TAGS ::= BEGIN Empty ::= SET { } S ::= SEQUENCE { e Empty DEFAULT {} } END
2013-01-25Update copyright yearsBjörn-Egil Dahlberg
2013-01-24Don't export encode_disp/2 and decode_disp/2 in generated modulesBjörn Gustavsson
Those functions were exported for no good reason.
2013-01-23By default, encode BIT STRING to bitstringsBjörn Gustavsson
Add the option 'legacy_bit_string' to decode to the old list format.
2013-01-22Remove the 'inline' and '{inline,OutputFile}' optionsBjörn Gustavsson
2013-01-22Add and use asn1rtt_checkBjörn Gustavsson
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.
2013-01-22Add a mechanism for embedding run-time functions into the generated codeBjörn Gustavsson
2012-12-06Suppress warnings for unused variables using a compiler optionBjörn Gustavsson
Currently, the generated code suppresses warnings for unusued variables by assigning to the "_Val" variable, for example: _Val = Tmpval5 To be completely safe, that should have been: _ = Tmpval5 in case there happens to more than one such assignment in the same scope. However, a better way to suppress warnings is to simply use the 'nowarn_unused_vars' compiler option. That method will also work for more complicated expressions there it would be cumbersome to suppress warnings by assignment to "_".
2012-11-26Simplify the code for the generated info/0 functionBjörn Gustavsson
While at it, also make the generated code for the attributes more readable.
2012-11-23Remove obsolete back-ends and simplify the optionsBjörn Gustavsson
It is time to clean up the mess of back-ends. Remove all the obsolete back-ends and simplify the options used to select them. New Option Old Equivalent ---------- -------------- ber ber_bin,optimize,nif per per,optimize,nif uper uper_bin The old options will still be recognized and translated to the new options, but will also print a warning. That implies that deprecated features that only are implemented in the old 'ber' back-end will no longer work (e.g. the {Typename,Value} notation). Also make the return type for the generated encode/2 function consistent. It used to be a binary for per and uper, and an iolist for ber. Always make it a binary.
2012-11-22Make the specialized decodes work with the 'nif' optionBjörn Gustavsson
2012-07-11Add support for extensible enumeration types in n2nGustav Simonsson
generated functions. OTP-10144
2012-07-11Make n2n option work for enumerated types without extensionGustav Simonsson
markers. Add test enumeration types for testing n2n option when using the name2num and num2name functions on an enumeration value not in the extension root of an enumeration type with extension marker.
2012-02-28[asn1] Abstract out table access to new moduleAdam Lindberg
All table access is now performed in a separate module. This will allow changes to how ETS is handled by changing only this module. Note that the module exports a very ETS-like interface for now which would have to be maintained even if the data format would change (to a hash map for example).
2011-08-02Remove some superflous includes which caused inlined modules to have lots of ↵Lukas Larsson
compile warnings
2011-08-01Update decode_open_type to use nifs if configured to do soLukas Larsson
2011-08-01Remove driver support for per encodingLukas Larsson
Handle the new error messages from the asn1 nifs Remove dead code for erlang optimized per decode