Help me to find an error

Help me to find an error

[Victor Porton]

I am writing open source Ada2012 bindings for Raptor library (it is about 
semantic Web).

My AUnit test case shows that there is an error.

The error is that the `Write(Str, Out_String);` 
(src/test/iostreams_test.adb:32) operator does not appends data to 
Out_String object. The bounded string inside Out_String object remains empty 
and this leads to an error.

My dispatching procedure Do_Write_Bytes (defined in src/rdf-raptor-
iostream.adb:414) is not called an I don't understand why.

Note that in src/rdf-raptor-iostream.ad:345 I create an object holding a 
raptor_iostream* C handler and pass the access to the object itself to the C 
library as user_data parameter, in order to make dispatching calls 
afterward. The callbacks I pass to the C raptor_new_iostream_from_handler 
function are just wrappers which call my object (reconstructed from the 
user_data parameter) dispatching methods.

Please help to understand the reason of the error. This will help not only 
to Raptor itself but also for my bigger project which I am going implement 
in Ada, X-former: http://freesoft.portonvictor.org/namespaces.xml - so your 
help would help to essentially advance free software.

My source is located at
https://github.com/vporton/redland-bindings/tree/ada2012/ada

Please ask me any questions.

-- 
Victor Porton - http://portonvictor.org

Re: Help me to find an error

[Victor Porton]

Victor Porton wrote:

> I am writing open source Ada2012 bindings for Raptor library (it is about
> semantic Web).
> 
> My AUnit test case shows that there is an error.
> 
> The error is that the `Write(Str, Out_String);`
> (src/test/iostreams_test.adb:32) operator does not appends data to
> Out_String object. The bounded string inside Out_String object remains
> empty and this leads to an error.
> 
> My dispatching procedure Do_Write_Bytes (defined in src/rdf-raptor-
> iostream.adb:414) is not called an I don't understand why.
> 
> Note that in src/rdf-raptor-iostream.ad:345 I create an object holding a
> raptor_iostream* C handler and pass the access to the object itself to the
> C library as user_data parameter, in order to make dispatching calls
> afterward. The callbacks I pass to the C raptor_new_iostream_from_handler
> function are just wrappers which call my object (reconstructed from the
> user_data parameter) dispatching methods.
> 
> Please help to understand the reason of the error. This will help not only
> to Raptor itself but also for my bigger project which I am going implement
> in Ada, X-former: http://freesoft.portonvictor.org/namespaces.xml - so
> your help would help to essentially advance free software.
> 
> My source is located at
> https://github.com/vporton/redland-bindings/tree/ada2012/ada
> 
> Please ask me any questions.

I have corrected the error myself (it was a bug in documentation of a C 
library).

The error what not quite what I described above.

-- 
Victor Porton - http://portonvictor.org