mruby playing

mrbtest.c

#include "mruby.h"

#include "mruby/proc.h"
#include "mruby/data.h"
#include "mruby/compile.h"

mrb_value class_func(mrb_state *mrb, mrb_value self)
{
	// Ruby method params
	char* strVal;
	int strLen;

	mrb_int intVal;
	mrb_float floatVal;
	// ---

	int argc = mrb_get_args(mrb, "sif", &strVal, &strLen, &intVal, &floatVal);

	printf("C Function Params (%i):\n", argc);
	printf("1: %s (%i)\n", strVal, strLen);
	printf("2: %i\n", intVal);
	printf("3: %f\n", floatVal);
}

mrb_value add(mrb_state *mrb, mrb_value self)
{
	mrb_int first, second;

	int argc = mrb_get_args(mrb, "ii", &first, &second);

	return mrb_fixnum_value(first + second);
}

int main(int argc, char** argv)
{
	mrb_state *mrb = mrb_open();

	// Define a ruby class
	struct RClass *cclass = mrb_define_class(mrb, "CClass", mrb->object_class);
	// aspec = 0 doesn't seem to be used in mrb_define_method_id (below)
	mrb_define_method(mrb, cclass, "c_func", class_func, ARGS_REQ(3));
	mrb_define_method(mrb, cclass, "add", add, ARGS_REQ(2));

	FILE *file;

	file = fopen("some_class.rb", "r");
	mrb_load_file(mrb, file);
	fclose(file);

	file = fopen("test.rb", "r");
	mrb_load_file(mrb, file);
	fclose(file);

	mrb_close(mrb);
}

some_class.rb

class SomeClass
  def do_stuff
    print "This is SomeClass.do_stuff\n"
  end
end

test.rb

class Test
  def foo
    print "This is foo!\n"
  end
end

t = Test.new
t.foo

sc = SomeClass.new
sc.do_stuff

cc = CClass.new
cc.c_func "string", 12, 43.21

print "Adding from c class: " + (cc.add(1, 1) + cc.add(2, 2)).to_s + "\n"

What is we want to define the function in mruby and call it from C?