Merge pull request #2138 from take-cheeze/struct_to_a

Implement Struct#to_a and Struct#values .

mrbgems/mruby-struct/src/struct.c

@@ -792,6 +792,19 @@ mrb_struct_len(mrb_state *mrb, mrb_value self)
   return mrb_fixnum_value(RSTRUCT_LEN(self));
 }
 
+/*
+ * call-seq:
+ *    struct.to_a    -> array
+ *    struct.values  -> array
+ *
+ * Create an array from struct values.
+ */
+static mrb_value
+mrb_struct_to_a(mrb_state *mrb, mrb_value self)
+{
+  return mrb_ary_new_from_values(mrb, RSTRUCT_LEN(self), RSTRUCT_PTR(self));
+}
+
 /*
  *  A <code>Struct</code> is a convenient way to bundle a number of
  *  attributes together, using accessor methods, without having to write
@@ -827,6 +840,8 @@ mrb_mruby_struct_gem_init(mrb_state* mrb)
 
   mrb_define_method(mrb, st,        "size",           mrb_struct_len,         MRB_ARGS_NONE());
   mrb_define_method(mrb, st,        "length",         mrb_struct_len,         MRB_ARGS_NONE());
+  mrb_define_method(mrb, st,        "to_a",           mrb_struct_to_a,        MRB_ARGS_NONE());
+  mrb_define_method(mrb, st,        "values",         mrb_struct_to_a,        MRB_ARGS_NONE());
 }
 
 void

mrbgems/mruby-struct/test/struct.rb

@@ -112,3 +112,9 @@ assert('Struct#length, Struct#size') do
   assert_equal 2, s.size
   assert_equal 2, s.length
 end
+
+assert('Struct#to_a, Struct#values') do
+  s = Struct.new(:mem1, :mem2).new('a', 'b')
+  assert_equal ['a', 'b'], s.to_a
+  assert_equal ['a', 'b'], s.values
+end