From fcbf63e62c627deae76c1b8cb8c0876c536ed811 Mon Sep 17 00:00:00 2001
From: Jari Vetoniemi <jari.vetoniemi@indooratlas.com>
Date: Mon, 16 Mar 2020 18:49:26 +0900
Subject: Fresh start

---
 jni/ruby/lib/rake/ext/core.rb | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 jni/ruby/lib/rake/ext/core.rb

(limited to 'jni/ruby/lib/rake/ext/core.rb')

diff --git a/jni/ruby/lib/rake/ext/core.rb b/jni/ruby/lib/rake/ext/core.rb
new file mode 100644
index 0000000..7575df1
--- /dev/null
+++ b/jni/ruby/lib/rake/ext/core.rb
@@ -0,0 +1,25 @@
+class Module
+  # Check for an existing method in the current class before extending.  If
+  # the method already exists, then a warning is printed and the extension is
+  # not added.  Otherwise the block is yielded and any definitions in the
+  # block will take effect.
+  #
+  # Usage:
+  #
+  #   class String
+  #     rake_extension("xyz") do
+  #       def xyz
+  #         ...
+  #       end
+  #     end
+  #   end
+  #
+  def rake_extension(method) # :nodoc:
+    if method_defined?(method)
+      $stderr.puts "WARNING: Possible conflict with Rake extension: " +
+        "#{self}##{method} already exists"
+    else
+      yield
+    end
+  end
+end
-- 
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