(maint) Explicitly unpack validate_slength args

lib/puppet/parser/functions/validate_slength.rb

@@ -23,19 +23,21 @@ module Puppet::Parser::Functions
 
     raise Puppet::ParseError, "validate_slength(): Wrong number of arguments (#{args.length}; must be 2 or 3)" unless args.length == 2 or args.length == 3
 
-    unless (args[0].is_a?(String) or args[0].is_a?(Array))
-      raise Puppet::ParseError, "validate_slength(): please pass a string, or an array of strings - what you passed didn't work for me at all - #{args[0].class}"
+    input, max_length, min_length = *args
+
+    unless (input.is_a?(String) or input.is_a?(Array))
+      raise Puppet::ParseError, "validate_slength(): please pass a string, or an array of strings - what you passed didn't work for me at all - #{input.class}"
     end
 
     begin
-      max_length = args[1].to_i
+      max_length = max_length.to_i
     rescue NoMethodError => e
       raise Puppet::ParseError, "validate_slength(): Couldn't convert whatever you passed as the max length parameter to an integer  - sorry: " + e.message
     end
 
     unless args.length == 2
       begin
-        min_length = Integer(args[2])
+        min_length = Integer(min_length)
       rescue StandardError => e
         raise Puppet::ParseError, "validate_slength(): Couldn't convert whatever you passed as the min length parameter to an integer  - sorry: " + e.message
       end
@@ -47,11 +49,11 @@ module Puppet::Parser::Functions
     raise Puppet::ParseError, "validate_slength(): please pass a positive number as min_length" unless min_length >= 0
     raise Puppet::ParseError, "validate_slength(): please pass a min length that is smaller than the maximum" unless min_length <= max_length
 
-    case args[0]
+    case input
       when String
-        raise Puppet::ParseError, "validate_slength(): #{args[0].inspect} is #{args[0].length} characters.  It should have been between #{min_length} and #{max_length} characters" unless args[0].length <= max_length and min_length <= args[0].length
+        raise Puppet::ParseError, "validate_slength(): #{input.inspect} is #{input.length} characters.  It should have been between #{min_length} and #{max_length} characters" unless input.length <= max_length and min_length <= input.length
       when Array
-        args[0].each do |arg|
+        input.each do |arg|
           if arg.is_a?(String)
             unless ( arg.is_a?(String) and arg.length <= max_length and min_length <= arg.length)
               raise Puppet::ParseError, "validate_slength(): #{arg.inspect} is #{arg.length} characters.  It should have been between #{min_length} and #{max_length} characters"
@@ -61,7 +63,7 @@ module Puppet::Parser::Functions
           end
         end
       else
-        raise Puppet::ParseError, "validate_slength(): please pass a string, or an array of strings - what you passed didn't work for me at all - #{args[0].class}"
+        raise Puppet::ParseError, "validate_slength(): please pass a string, or an array of strings - what you passed didn't work for me at all - #{input.class}"
     end
   end
 end