That's the approach we've taken with Renjin and GNU R's C API.
You can basically tell the compiler to map a C struct to a given java
class, for example, mapping CRuby's VALUE to org.jruby.RubyBasicObject and
import
GimpleCompiler compiler = new GimpleCompiler();
compiler.addRecordClass("__VALUE", RubyBasicObject.class);
compiler.addMethod("TYPE", CRuby.class, "TYPE");
You can then define:
class CRuby {
public static int TYPE(RubyBasicObject obj) {
if(obj instance of RubyBoolean) return 1;
if(obj instance of RubyHash) return 2;
// etc...
}
}
We monkey with the GNU R header files to make replace macros with function
declarations so they can mapped to JVM methods.
-Alex
On Monday, February 1, 2016 at 2:31:37 PM UTC+1, Charles Nutter wrote:
>
> Yay! I will have to look into this. We have an interest in compiling Ruby
> C extensions to Java and providing a JVM-level implementation of Ruby's C
> API.
>
> - Charlie (mobile)
> On Feb 1, 2016 1:09 PM, "Alexander Bertram" <[email protected]
> <javascript:>> wrote:
>
>> Hi all,
>>
>> I've finally gotten around to writing a bit about GCC-Bridge, the
>> C/Fortran compiler used by Renjin to compile R packages with "native" code
>> to the JVM.
>> http://www.renjin.org/blog/2016-01-31-introducing-gcc-bridge.html
>>
>> The compiler's recently benefited from a near total rewrite to target
>> Java 1.7 (including using MethodHandles for function pointers, which are a
>> great fit) and
>> we are looking to support C++ code in the near future, which is a
>> actually not such a big step as we are using GCC as a frontend.
>>
>> We've been careful to keep gcc-bridge usable apart from Renjin, so would
>> welcome collaboration with other J* languages interested in a better
>> supporting native
>> extensions/gems/modules!
>>
>> All the best,
>> Alex
>>
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