package org.jruby.ext.ffi;
import org.jruby.Ruby;
import org.jruby.RubyModule;
import org.jruby.anno.JRubyMethod;
import org.jruby.runtime.ThreadContext;
import org.jruby.runtime.builtin.IRubyObject;
/**
* Converts data from one FFI type to another.
*/
public class DataConverter {
public static RubyModule createDataConverterModule(Ruby runtime, RubyModule module) {
RubyModule result = module.defineModuleUnder("DataConverter");
result.defineAnnotatedMethods(DataConverter.class);
result.defineAnnotatedConstants(DataConverter.class);
return result;
}
@JRubyMethod(name = "native_type", module=true, optional = 1)
public static IRubyObject native_type(ThreadContext context, IRubyObject self, IRubyObject[] args) {
if (!(self instanceof RubyModule)) {
throw context.getRuntime().newRuntimeError("not a module");
}
RubyModule m = (RubyModule) self;
if (args.length == 0) {
if (!m.hasInternalVariable("native_type")) {
throw context.getRuntime().newNotImplementedError("native_type method not overridden and no native_type set");
}
return (Type) m.fastGetInternalVariable("native_type");
} else if (args.length == 1) {
Type type = Util.findType(context, args[0]);
m.fastSetInternalVariable("native_type", type);
return type;
} else {
throw context.getRuntime().newArgumentError("incorrect arguments");
}
}
@JRubyMethod(name = "to_native", module=true)
public static IRubyObject to_native(ThreadContext context, IRubyObject self, IRubyObject value, IRubyObject ctx) {
return value;
}
@JRubyMethod(name = "from_native", module=true)
public static IRubyObject from_native(ThreadContext context, IRubyObject self, IRubyObject value, IRubyObject ctx) {
return value;
}
}