Support MRB_WIHTOUT_FLOAT to mruby-object-ext

mrbgems/mruby-object-ext/src/object.c

@@ -16,6 +16,7 @@ nil_to_a(mrb_state *mrb, mrb_value obj)
   return mrb_ary_new(mrb);
 }
 
+#ifndef MRB_WITHOUT_FLOAT
 /*
  *  call-seq:
  *     nil.to_f    -> 0.0
@@ -28,6 +29,7 @@ nil_to_f(mrb_state *mrb, mrb_value obj)
 {
   return mrb_float_value(mrb, 0.0);
 }
+#endif
 
 /*
  *  call-seq:
@@ -77,7 +79,9 @@ mrb_obj_instance_exec(mrb_state *mrb, mrb_value self)
   switch (mrb_type(self)) {
   case MRB_TT_SYMBOL:
   case MRB_TT_FIXNUM:
+#ifndef MRB_WITHOUT_FLOAT
   case MRB_TT_FLOAT:
+#endif
     c = NULL;
     break;
   default:
@@ -94,7 +98,9 @@ mrb_mruby_object_ext_gem_init(mrb_state* mrb)
   struct RClass * n = mrb->nil_class;
 
   mrb_define_method(mrb, n, "to_a", nil_to_a,       MRB_ARGS_NONE());
+#ifndef MRB_WITHOUT_FLOAT
   mrb_define_method(mrb, n, "to_f", nil_to_f,       MRB_ARGS_NONE());
+#endif
   mrb_define_method(mrb, n, "to_i", nil_to_i,       MRB_ARGS_NONE());
 
   mrb_define_method(mrb, mrb->kernel_module, "instance_exec", mrb_obj_instance_exec, MRB_ARGS_ANY() | MRB_ARGS_BLOCK());

mrbgems/mruby-object-ext/test/nil.rb

@@ -4,7 +4,7 @@ end
 
 assert('NilClass#to_f') do
   assert_equal 0.0, nil.to_f
-end
+end if class_defined?("Float")
 
 assert('NilClass#to_i') do
   assert_equal 0, nil.to_i