1 files changed, 25 insertions, 0 deletions
diff --git a/lib/pry/warning.rb b/lib/pry/warning.rb
new file mode 100644
index 00000000..6f7bee76
--- /dev/null
+++ b/lib/pry/warning.rb
@@ -0,0 +1,25 @@
+class Pry
+  # @api private
+  # @since ?.?.?
+  module Warning
+    # Prints a warning message with exact file and line location, similar to how
+    # Ruby's -W prints warnings.
+    #
+    # @param [String] message
+    # @return [void]
+    def self.warn(message)
+      if Kernel.respond_to?(:caller_locations)
+        location = caller_locations(1..1).first
+        path = location.path
+        lineno = location.lineno
+      else
+        # Ruby 1.9.3 support.
+        frame = caller.first.split(':') # rubocop:disable Performance/Caller
+        path = frame.first
+        lineno = frame[1]
+      end
+
+      Kernel.warn("#{path}:#{lineno}: warning: #{message}")
+    end
+  end
+end