1 files changed, 34 insertions, 0 deletions
diff --git a/puppet/modules/stdlib/lib/puppet/parser/functions/validate_bool.rb b/puppet/modules/stdlib/lib/puppet/parser/functions/validate_bool.rb
new file mode 100644
index 00000000..59a08056
--- /dev/null
+++ b/puppet/modules/stdlib/lib/puppet/parser/functions/validate_bool.rb
@@ -0,0 +1,34 @@
+module Puppet::Parser::Functions
+
+  newfunction(:validate_bool, :doc => <<-'ENDHEREDOC') do |args|
+    Validate that all passed values are either true or false. Abort catalog
+    compilation if any value fails this check.
+
+    The following values will pass:
+
+        $iamtrue = true
+        validate_bool(true)
+        validate_bool(true, true, false, $iamtrue)
+
+    The following values will fail, causing compilation to abort:
+
+        $some_array = [ true ]
+        validate_bool("false")
+        validate_bool("true")
+        validate_bool($some_array)
+
+    ENDHEREDOC
+
+    unless args.length > 0 then
+      raise Puppet::ParseError, ("validate_bool(): wrong number of arguments (#{args.length}; must be > 0)")
+    end
+
+    args.each do |arg|
+      unless function_is_bool([arg])
+        raise Puppet::ParseError, ("#{arg.inspect} is not a boolean.  It looks to be a #{arg.class}")
+      end
+    end
+
+  end
+
+end