* Can someone who doesn't know C ever hope to write thick bindings for a C library to Ada?
@ 2013-09-29 20:28 Kevin Keith
2013-09-30 0:36 ` Shark8
2013-09-30 14:01 ` Marius Amado-Alves
0 siblings, 2 replies; 3+ messages in thread
From: Kevin Keith @ 2013-09-29 20:28 UTC (permalink / raw)
Okay, so I *sort of* know C, but I'm by no means an expert or proficient in it. I sort of know it in that I can kinda sort follow well commented C code. Earlier I posted about thick SDL bindings, and another person asked if it were possible to utilize C2Ada without knowing C, my question is sort of in between. Is it possible to write thick bindings from auto-generated C bindings (using GNAT) without really knowing C very well?
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Can someone who doesn't know C ever hope to write thick bindings for a C library to Ada?
2013-09-29 20:28 Can someone who doesn't know C ever hope to write thick bindings for a C library to Ada? Kevin Keith
@ 2013-09-30 0:36 ` Shark8
2013-09-30 14:01 ` Marius Amado-Alves
1 sibling, 0 replies; 3+ messages in thread
From: Shark8 @ 2013-09-30 0:36 UTC (permalink / raw)
On Sunday, September 29, 2013 2:28:45 PM UTC-6, Kevin Keith wrote:
> Okay, so I *sort of* know C, but I'm by no means an expert or proficient in it. I sort of know it in that I can kinda sort follow well commented C code. Earlier I posted about thick SDL bindings, and another person asked if it were possible to utilize C2Ada without knowing C, my question is sort of in between. Is it possible to write thick bindings from auto-generated C bindings (using GNAT) without really knowing C very well?
Yes. I'm certainly no C expert and I'm doing it.
See https://github.com/OneWingedShark/TAO-GL
Several things to watch out for:
1) Using pointers/addresses for arrays, get those to proper Ada arrays ASAP.
2) Keep an eye out for subtyping possibilities. [esp null exclusion or non-numeric exclusions for IEEE754 floats.]
3) It can get kind of tedious, if you don't autogenerate stuff and/or have a clear idea in mind for the interface.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Can someone who doesn't know C ever hope to write thick bindings for a C library to Ada?
2013-09-29 20:28 Can someone who doesn't know C ever hope to write thick bindings for a C library to Ada? Kevin Keith
2013-09-30 0:36 ` Shark8
@ 2013-09-30 14:01 ` Marius Amado-Alves
1 sibling, 0 replies; 3+ messages in thread
From: Marius Amado-Alves @ 2013-09-30 14:01 UTC (permalink / raw)
You have to understand C types including function prototypes and their mapping to Ada types. Make a thin binding first using Interfaces, System, etc. Then a thick binding that uses only that. Example:
http://sourceforge.net/p/aquaterm/git/ci/master/tree/adapters/ada/
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