From d896e42306c5c7761a14a2d88b6d2ed04401b03c Mon Sep 17 00:00:00 2001
From: Steve Kemp <steve@steve.org.uk>
Date: Thu, 15 Nov 2012 08:17:13 +0000
Subject:   Throw an exception if we attempt to redefine a macro.

---
 lib/custodian/parser.rb | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'lib/custodian')

diff --git a/lib/custodian/parser.rb b/lib/custodian/parser.rb
index 7ed7a51..268dd3b 100755
--- a/lib/custodian/parser.rb
+++ b/lib/custodian/parser.rb
@@ -190,6 +190,10 @@ class MonitorConfig
 
     end
 
+    if ( is_macro?( name ) )
+      raise ArgumentError, "The macro #{name} is already defined"
+    end
+
     @MACROS[name] = val
   end
 
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