From 1da5dc55ee48fcd437f5b5df00a5b2f3991ec9f1 Mon Sep 17 00:00:00 2001
From: Micah <micah@leap.se>
Date: Tue, 24 May 2016 10:19:33 -0400
Subject: Squashed 'puppet/modules/stdlib/' content from commit 7112363

git-subtree-dir: puppet/modules/stdlib
git-subtree-split: 71123634744b9fe2ec7d6a3e38e9789fd84801e3
---
 lib/puppet/parser/functions/merge.rb | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 lib/puppet/parser/functions/merge.rb

(limited to 'lib/puppet/parser/functions/merge.rb')

diff --git a/lib/puppet/parser/functions/merge.rb b/lib/puppet/parser/functions/merge.rb
new file mode 100644
index 00000000..1b39f206
--- /dev/null
+++ b/lib/puppet/parser/functions/merge.rb
@@ -0,0 +1,34 @@
+module Puppet::Parser::Functions
+  newfunction(:merge, :type => :rvalue, :doc => <<-'ENDHEREDOC') do |args|
+    Merges two or more hashes together and returns the resulting hash.
+
+    For example:
+
+        $hash1 = {'one' => 1, 'two', => 2}
+        $hash2 = {'two' => 'dos', 'three', => 'tres'}
+        $merged_hash = merge($hash1, $hash2)
+        # The resulting hash is equivalent to:
+        # $merged_hash =  {'one' => 1, 'two' => 'dos', 'three' => 'tres'}
+
+    When there is a duplicate key, the key in the rightmost hash will "win."
+
+    ENDHEREDOC
+
+    if args.length < 2
+      raise Puppet::ParseError, ("merge(): wrong number of arguments (#{args.length}; must be at least 2)")
+    end
+
+    # The hash we accumulate into
+    accumulator = Hash.new
+    # Merge into the accumulator hash
+    args.each do |arg|
+      next if arg.is_a? String and arg.empty? # empty string is synonym for puppet's undef
+      unless arg.is_a?(Hash)
+        raise Puppet::ParseError, "merge: unexpected argument type #{arg.class}, only expects hash arguments"
+      end
+      accumulator.merge!(arg)
+    end
+    # Return the fully merged hash
+    accumulator
+  end
+end
-- 
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