Bind grn_obj_type_to_string()

GitHub: #116

ext/groonga/rb-grn-object.c

@@ -1718,6 +1718,34 @@ rb_grn_object_key_accessor_p (VALUE self)
     return CBOOL2RVAL(key_accessor_p);
 }
 
+/**
+ * Returns the object type string.
+ *
+ * @example Groonga::Database
+ *   Groonga::Database.create(:path => "/path/to/db") do |database|
+ *     p database.type_string # => "db"
+ *   end
+ *
+ * @example Groonga::Hash
+ *   users = Groonga::Hash.create(:name => "Users")
+ *   p users.type_string # => "table:hash_key"
+ *
+ * @overload type_string
+ *   @return [String] The object type string.
+ *
+ * @since 6.0.0
+ */
+static VALUE
+rb_grn_object_type_to_string (VALUE self)
+{
+    grn_obj *object;
+
+    rb_grn_object_deconstruct(SELF(self), &object, NULL,
+                              NULL, NULL, NULL, NULL);
+
+    return rb_str_new_cstr(grn_obj_type_to_string(object->header.type));
+}
+
 void
 rb_grn_init_object (VALUE mGrn)
 {
@@ -1767,4 +1795,7 @@ rb_grn_init_object (VALUE mGrn)
                      rb_grn_object_accessor_p, 0);
     rb_define_method(rb_cGrnObject, "key_accessor?",
                      rb_grn_object_key_accessor_p, 0);
+
+    rb_define_method(rb_cGrnObject, "type_string",
+                     rb_grn_object_type_to_string, 0);
 }

test/test-database.rb

@@ -276,6 +276,12 @@ def test_reindex
                  terms.collect(&:_key).sort)
   end
 
+  def test_type_string
+    Groonga::Database.create(:path => @database_path.to_s) do |database|
+      assert_equal("db", database.type_string)
+    end
+  end
+
   class RemoveTest < self
     setup :setup_database
 

test/test-hash.rb

@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
 #
-# Copyright (C) 2014  Masafumi Yokoyama <[email protected]>
 # Copyright (C) 2009-2014  Kouhei Sutou <[email protected]>
+# Copyright (C) 2014-2016  Masafumi Yokoyama <[email protected]>
 #
 # This library is free software; you can redistribute it and/or
 # modify it under the terms of the GNU Lesser General Public
@@ -443,4 +443,9 @@ def test_each_without_block
     user_names = users.each.collect(&:key)
     assert_equal(["Alice", "Bob", "Carl"], user_names)
   end
+
+  def test_type_string
+    users = Groonga::Hash.create(:name => "Users")
+    assert_equal("table:hash_key", users.type_string)
+  end
 end