silence some warnings from evma_httpserver

1 files changed, 28 insertions, 0 deletions

diff --git a/lib/kernel_ext.rb b/lib/kernel_ext.rb
new file mode 100644
index 0000000..b5b58e0
--- /dev/null
+++ b/lib/kernel_ext.rb
@@ -0,0 +1,28 @@
+module Kernel
+  # Sets $VERBOSE to nil for the duration of the block and back to its original
+  # value afterwards.
+  #
+  #   silence_warnings do
+  #     value = noisy_call # no warning voiced
+  #   end
+  #
+  #   noisy_call # warning voiced
+  def silence_warnings
+    with_warnings(nil) { yield }
+  end
+
+  # Sets $VERBOSE to +true+ for the duration of the block and back to its
+  # original value afterwards.
+  def enable_warnings
+    with_warnings(true) { yield }
+  end
+
+  # Sets $VERBOSE for the duration of the block and back to its original
+  # value afterwards.
+  def with_warnings(flag)
+    old_verbose, $VERBOSE = $VERBOSE, flag
+    yield
+  ensure
+    $VERBOSE = old_verbose
+  end
+end