Preset for HCC

[almson]

I'm trying to create a preset for AMD's new GPGPU effort, particularly for the HCC interface. (Honestly, the alphabet soup is such a mess that I'm not going to even begin to explain all of the moving parts. Suffice it to say that I'm targeting hc.hpp).

The first stumbling block I've hit is Unexpected token '::' for the following line:

// namespace alias
// namespace hc::fast_math is an alias of namespace Kalmar::fast_math
namespace fast_math = Kalmar::fast_math;

I'd appreciate any pointers. Does the Parser support this syntax? Is there a workaround?

[saudet]

It probably doesn't support that exact syntax, yes.

[almson]

So is there a way I can ignore this line? I'm assuming I can emulate the alias with new Info ("fast_math").cppText ("Kalmar::fast_math"). Sorry, I'm totally new to this and would appreciate pointers.

[almson]

From reading the code, it seems there is no facility to do simple find&replace. cppText seems to only work in specific cases of #define. Am I correct?

If you like, I can post the code I have now. Currently, I have a cppbuild.sh that downloads the HCC header files (no install needed) and a skeleton of a pom and an hc.java.

[saudet]

cppText expects #define yes, but works with any identifier, it's used by the preprocessor, though you won't be able to do anything that the C++ preprocessor can't do in the first place.

We'll likely have to fix JavaCPP's Parser, but it should be pretty easy. There's someone who a few minutes ago has just fixed a similar bug: https://github.com/bytedeco/javacpp-presets/issues/264

If you could help in a similar way, it would be very much appreciated.

[almson]

May I ask why you chose to write your own C++ parser instead of using one of many third-party ones? The Eclipse parser opens hc.hpp without problems (try it: https://github.com/almson/eclipse-cdt-standalone-astparser). There's other options too: https://stackoverflow.com/questions/12865587/parsing-c-source-code-in-java-environment

[saudet]

Because no existing parser was designed to output a Java interface. Of course that's the long term plan, enhancing some existing parser so it supports what we need. As usual, your help would be very welcome.

[saudet]

Fixed the namespace alias issue. Let me know if you encounter any other issues. Thanks for reporting!

[saudet]

I've fixed the parsing issue you were having. Any other issues with HCC?

[saudet]

FYI, JetBrains chose to create their own C++ parser, instead of using an existing one as well: https://blog.jetbrains.com/clion/2015/07/clion-1-1-eap-starts/#comment-13321 If you just keep complaining and don't actually do anything, nothing will get done! Please consider actually doing something. Thank you :)