Hi,

When I tried compiling the test project with Clang 10, both on Windows and in WSL Ubuntu 20.04, I got the error template parameter redefines default argument:

D:\Projects\TestASN1\TestASN1\external\asn1cpp\Encoding.hpp(29,42): error : template parameter redefines default argument
          template <typename T, typename = typename std::enable_if<is_asn1_wrapper<T>::value>::type>
                                           ^
D:\Projects\TestASN1\TestASN1\external\asn1cpp\Seq.hpp(18,42): note: previous default template argument defined here
          template <typename T, typename = typename std::enable_if<is_asn1_wrapper<T>::value>::type>
                                           ^

However, the same code compiled just fine with MSVC 19.26 on Windows and GCC 9.3 on Ubuntu. Is this the intended behavior? I just want to ask so that I can make a note in my readme later.

Thank you so much for your time and help.

Help me to make it work using Visual Studio. When I import the headers I receive some compilation errors.

My code:

auto sigPolHash = asn1cpp::makeSeq(SigPolicyHash);
asn1cpp::setField(sigPolHash->hashAlgorithm, "1.2.840.113549.1.9.16.2.15");
asn1cpp::setField(sigPolHash->hashValue, "\x89\xA5\xEA\x68\xCC\x0F\x7E\x4E\x89\xA6\x23\xBF\xA6\xC8\x40\x75\xCB\xAF\x44\x35\x35\x5B\x82\x84\x56\xFF\xD1\x44\x8E\x5B\xA3\x52");
auto value = asn1cpp::getField(sigPolHash->hashAlgorithm, std::string);

Compilation error:

1>c:\project\include\asn1cpp\view.hpp(285): error C2976: 'asn1cpp::Impl::Setter': too few template arguments
1>c:\project\include\asn1cpp\view.hpp(14): note: see declaration of 'asn1cpp::Impl::Setter'
1>c:\project\include\asn1cpp\view.hpp(289): note: see reference to class template instantiation 'asn1cpp::View<T>' being compiled
1>c:\project\include\asn1cpp\setter.hpp(35): error C2976: 'asn1cpp::Impl::Setter': too few template arguments
1>c:\project\include\asn1cpp\setter.hpp(29): note: see declaration of 'asn1cpp::Impl::Setter'
1>c:\project\include\asn1cpp\setter.hpp(43): error C2913: explicit specialization; 'asn1cpp::Impl::Setter' is not a specialization of a class template
1>c:\project\include\asn1cpp\setter.hpp(59): error C2913: explicit specialization; 'asn1cpp::Impl::Setter' is not a specialization of a class template
1>c:\project\include\asn1cpp\setter.hpp(72): error C2913: explicit specialization; 'asn1cpp::Impl::Setter' is not a specialization of a class template

I am using Microsoft Windows 2017 with toolset v141.

Hi,

I'm making use of asn1cpp for a project and so far everything has been working perfectly. Recently, I have encountered an issue when trying to create a sequence of CHOICE that looks like this:

ISO14823Attributes::= SEQUENCE (SIZE(1..8,...)) OF CHOICE{
	dtm DTM, 	-- Date/Time/Period	
	edt	EDT,	-- Exemption status of Date/Time/Period	
	dfl	DFL,	-- Directional Flow of Lane	
	ved	VED, 	-- Vehicle Dimensions
	spe	SPE, 	-- Speed
	roi	ROI,	-- Rate of Incline
	dbv	DBV,	-- Distance Between Vehicles
	ddd	DDD 	-- Destination/Direction/Distance
	}

With this sequence the asn1c generated ISO14823Attributes.h defines the sequence as: A_SEQUENCE_OF(ISO14823Attributes__Member) list; and with the ISO14823Attributes__Member struct defined in the same .h file(I'm attaching the file for better understanding).
The issue is that when trying to create a sequence of the member struct with asn1cpp::makeSeq(ISO14823Attributes__Member) I get an error because it doesn't have an asn type descriptor. On the other hand, a problem arises when trying to manually set the fields
inside the member struct and then trying to do sequenceof::pushList() like this:

auto attr = asn1cpp::makeSeq(ISO14823Attributes);

ISO14823Attributes__Member attr_m;
attr_m.present = ISO14823Attributes__Member_PR_spe;
attr_m.choice.spe = spe_content;

asn1ccp::sequenceOf::pushList(*attr,attr_m);

The error that I get when trying to build says that there is no match for the call to (asn1cpp::Impl::Setter<ISO14823Attributes__Member, void>) (ISO14823Attributes__Member*&, const ISO14823Attributes__Member&).

In an attempt to solve the issue, I added a new macro based on pushList that avoids the use of asn1cpp::setterField() like it is done in asn1cpp::setOf::adderElement() that look like this:

 template <typename T, typename V>
        bool adderChoice(T & field, const V & value) {
            V *ptr = static_cast<V*>(calloc(1,sizeof(V)));

            if(!ptr) {
                return false;
            }

            *ptr=value;

            return ASN_SET_ADD(&field, ptr) == 0;
        } 

With this, I was able to successfully create the sequence but another error comes up when the destructor of the Seq<ISO14823Attributes> object is destroyed and the line def_->op->free_struct(def_, seq_, ASFM_FREE_EVERYTHING); in Seq.hpp, is called. As far as I understand this issue has to do with the fact that avoiding the use of asn1cpp::setterField() also means avoiding the use of the View object that takes care of some memory handling but I don't fully understand how it works.

I would like to ask if there is something I'm missing or if there is any other way to treat this kind of structure "SEQUENCE OF CHOICE". I also let you the .asn containing this structure in case it serves of any help.

Thank you very much in advance for your time and help.
files.zip

Hi,

I'm trying out the asn1cpp for my project and everything seems to be working fine. However, I'm having problem with creating an optional sequence. The schema is something like this:

Message ::= SEQUENCE
{
       header MessageHeader,
       content MessageContent,
       content-seqOf SEQUENCE SIZE (1..4) OF MessageContent OPTIONAL
}

I can create the header and the main content sequence using asn1cpp::makeSeq just fine. However, when I tried to create another MessageContent to push it into the content-seqOf, the pushList macro always return false.

auto encode_message = asn1cpp::makeSeq(Message);
auto sub_content= asn1cpp::makeSeq(MessageContent);
auto result = asn1cpp::sequenceof::pushList(*encode_message->content-seqOf, sub_content);

I tried both setOf and sequenceOf but none succeeded.

Thank you so much for your time and help.

BIT_STRING_t define like this:
DriveBehavior ::= BIT STRING {
goStraightForward(0),
laneChangingToLeft(1),
laneChangingToRight(2)
} (SIZE(14,...))

What can I get/set bitstring by getField or setField?