Merge pull request #165 from hsbt/support-ruby24

Support to Integer unification for Ruby 2.4

Author: brianmario

.travis.yml

@@ -8,6 +8,7 @@ rvm:
   - rbx-2
   - ree
   - ruby-head
+before_install: gem install bundler --no-document
 matrix:
   allow_failures:
     - rvm: rbx-2

ext/yajl/yajl_ext.c

@@ -878,7 +878,11 @@ static VALUE rb_yajl_json_ext_nil_to_json(int argc, VALUE * argv, VALUE self) {
 static VALUE rb_yajl_encoder_enable_json_gem_ext(VALUE klass) {
     rb_define_method(rb_cHash, "to_json", rb_yajl_json_ext_hash_to_json, -1);
     rb_define_method(rb_cArray, "to_json", rb_yajl_json_ext_array_to_json, -1);
+#ifdef RUBY_INTEGER_UNIFICATION
+    rb_define_method(rb_cInteger, "to_json", rb_yajl_json_ext_fixnum_to_json, -1);
+#else
     rb_define_method(rb_cFixnum, "to_json", rb_yajl_json_ext_fixnum_to_json, -1);
+#endif
     rb_define_method(rb_cFloat, "to_json", rb_yajl_json_ext_float_to_json, -1);
     rb_define_method(rb_cString, "to_json", rb_yajl_json_ext_string_to_json, -1);
     rb_define_method(rb_cTrueClass, "to_json", rb_yajl_json_ext_true_to_json, -1);