[GR-19220] Implement rb_define_class_id, rb_module_new and rb_define_module_id (#1876).

PullRequest: truffleruby/1235

Author: aardvark179

CHANGELOG.md

@@ -75,6 +75,7 @@ Compatibility:
 * Include the major kernel version in `RUBY_PLATFORM` on macOS like MRI (#1860, @eightbitraptor).
 * Implemented `Enumerator::Chain`, `Enumerator#+`, and `Enumerable#chain` (#1859, #1858).
 * Implemented `Thread#backtrace_locations` and `Exception#backtrace_locations` (#1556).
+* Implemented `rb_module_new`, `rb_define_class_id`, `rb_define_module_id`, (#1876, @chrisseaton).
 
 Performance:
 

lib/truffle/truffle/cext.rb

@@ -1524,6 +1524,10 @@ def rb_block_call(object, method, args, func, data)
     end
   end
 
+  def rb_module_new
+    Module.new
+  end
+
   def rb_ensure(b_proc, data1, e_proc, data2)
     begin
       TrufflePrimitive.cext_unwrap(TrufflePrimitive.call_with_c_mutex(b_proc, [data1]))

src/main/c/cext/ruby.c

@@ -3532,15 +3532,20 @@ VALUE rb_class_inherited(VALUE super, VALUE klass) {
 }
 
 VALUE rb_define_class_id(ID id, VALUE super) {
-  rb_tr_error("rb_define_class_id not implemented");
+  // id is deliberately ignored - see MRI
+  if (super == NULL) {
+    super = rb_cObject;
+  }
+  return rb_class_new(super);
 }
 
 VALUE rb_module_new(void) {
-  rb_tr_error("rb_module_new not implemented");
+  return RUBY_CEXT_INVOKE("rb_module_new");
 }
 
 VALUE rb_define_module_id(ID id) {
-  rb_tr_error("rb_define_module_id not implemented");
+  // id is deliberately ignored - see MRI
+  return rb_module_new();
 }
 
 VALUE rb_define_module_id_under(VALUE outer, ID id) {