print.rb: raise NotImplementedError for disabled methods

mrblib/print.rb

@@ -3,71 +3,76 @@
 #
 # ISO 15.3.1
 module Kernel
+  unless Kernel.respond_to?(:__printstr__)
+    def print(*a)
+      raise NotImplementedError.new('print not available')
+    end
+    def puts(*a)
+      raise NotImplementedError.new('puts not available')
+    end
+    def p(*a)
+      raise NotImplementedError.new('p not available')
+    end
+    def printf(*args)
+      raise NotImplementedError.new('printf not available')
+    end
+  else
+    unless Kernel.respond_to?(:sprintf)
+      def printf(*args)
+        raise NotImplementedError.new('printf not available')
+      end
+      def sprintf(*args)
+        raise NotImplementedError.new('sprintf not available')
+      end
+    end
 
-  ##
-  # Invoke method +print+ on STDOUT and passing +*args+
-  #
-  # ISO 15.3.1.2.10
-  def print(*args)
-    i = 0
-    len = args.size
-    while i < len
-      __printstr__ args[i].to_s
-      i += 1
+
+    ##
+    # Invoke method +print+ on STDOUT and passing +*args+
+    #
+    # ISO 15.3.1.2.10
+    def print(*args)
+      i = 0
+      len = args.size
+      while i < len
+        __printstr__ args[i].to_s
+        i += 1
+      end
     end
-  end
 
-  ##
-  # Invoke method +puts+ on STDOUT and passing +*args*+
-  #
-  # ISO 15.3.1.2.11
-  def puts(*args)
-    i = 0
-    len = args.size
-    while i < len
-      __printstr__ args[i].to_s
-      __printstr__ "\n"
-      i += 1
+    ##
+    # Invoke method +puts+ on STDOUT and passing +*args*+
+    #
+    # ISO 15.3.1.2.11
+    def puts(*args)
+      i = 0
+      len = args.size
+      while i < len
+        __printstr__ args[i].to_s
+        __printstr__ "\n"
+        i += 1
+      end
+      __printstr__ "\n" if len == 0
+      nil
     end
-    __printstr__ "\n" if len == 0
-    nil
-  end
 
-  ##
-  # Print human readable object description
-  #
-  # ISO 15.3.1.3.34
-  def p(*args)
-    i = 0
-    len = args.size
-    while i < len
-      __printstr__ args[i].inspect
-      __printstr__ "\n"
-      i += 1
+    ##
+    # Print human readable object description
+    #
+    # ISO 15.3.1.3.34
+    def p(*args)
+      i = 0
+      len = args.size
+      while i < len
+        __printstr__ args[i].inspect
+        __printstr__ "\n"
+        i += 1
+      end
+      args[0]
     end
-    args[0]
-  end
 
-  ##
-  # Invoke method +sprintf+ and pass +*args+ to it.
-  # Pass return value to +print+ of STDOUT.
-  if Kernel.respond_to?(:sprintf) and Kernel.respond_to?(:__printstr__)
     def printf(*args)
       __printstr__(sprintf(*args))
     end
-  else
-    def printf(*args)
-      raise NotImplementedError.new('printf not available')
-    end
-  end
-
-  ##
-  # +sprintf+ is defined in +src/sprintf.c+
-  # This stub method is only to inform the user
-  # that +sprintf+ isn't implemented.
-  unless Kernel.respond_to?(:sprintf)
-    def sprintf(*args)
-      raise NotImplementedError.new('sprintf not available')
-    end
   end
 end