Avoid making top-level `env` in initialization code; ref #4581

mrbgems/mruby-complex/mrblib/complex.rb

@@ -104,18 +104,18 @@ class Complex < Numeric
   end
 
   alias_method :imag, :imaginary
-end
 
-[Fixnum, Float].each do |cls|
-  [:+, :-, :*, :/, :==].each do |op|
-    cls.instance_exec do
-      original_operator_name = "__original_operator_#{op}_complex"
-      alias_method original_operator_name, op
-      define_method op do |rhs|
-        if rhs.is_a? Complex
-          Complex(self).send(op, rhs)
-        else
-          send(original_operator_name, rhs)
+  [Fixnum, Float].each do |cls|
+    [:+, :-, :*, :/, :==].each do |op|
+      cls.instance_exec do
+        original_operator_name = "__original_operator_#{op}_complex"
+        alias_method original_operator_name, op
+        define_method op do |rhs|
+          if rhs.is_a? Complex
+            Complex(self).send(op, rhs)
+          else
+            send(original_operator_name, rhs)
+          end
         end
       end
     end

mrbgems/mruby-rational/mrblib/rational.rb

@@ -89,28 +89,29 @@ module Kernel
     a, b = b, a % b until b == 0
     Rational._new(numerator.div(a), denominator.div(a))
   end
-end
 
-[:+, :-, :*, :/, :<=>, :==, :<, :<=, :>, :>=].each do |op|
-  Fixnum.instance_eval do
-    original_operator_name = "__original_operator_#{op}_rational"
-    alias_method original_operator_name, op
-    define_method op do |rhs|
-      if rhs.is_a? Rational
-        Rational(self).__send__(op, rhs)
-      else
-        __send__(original_operator_name, rhs)
+  [:+, :-, :*, :/, :<=>, :==, :<, :<=, :>, :>=].each do |op|
+    Fixnum.instance_eval do
+      original_operator_name = "__original_operator_#{op}_rational"
+      alias_method original_operator_name, op
+      define_method op do |rhs|
+        if rhs.is_a? Rational
+          Rational(self).__send__(op, rhs)
+        else
+          __send__(original_operator_name, rhs)
+        end
       end
     end
-  end
-  Float.instance_eval do
-    original_operator_name = "__original_operator_#{op}_rational"
-    alias_method original_operator_name, op
-    define_method op do |rhs|
-      if rhs.is_a? Rational
-        rhs = rhs.to_f
+    Float.instance_eval do
+      original_operator_name = "__original_operator_#{op}_rational"
+      alias_method original_operator_name, op
+      define_method op do |rhs|
+        if rhs.is_a? Rational
+          rhs = rhs.to_f
+        end
+        __send__(original_operator_name, rhs)
       end
-      __send__(original_operator_name, rhs)
-    end
-  end if Object.const_defined?(:Float)
+    end if Object.const_defined?(:Float)
+  end
 end
+