1 files changed, 33 insertions, 0 deletions
diff --git a/src/macros.rs b/src/macros.rs
new file mode 100644
index 0000000..558a4a9
--- /dev/null
+++ b/src/macros.rs
@@ -0,0 +1,33 @@
+// Copyright 2014-2017 The html5ever Project Developers. See the
+// COPYRIGHT file at the top-level directory of this distribution.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+macro_rules! unwrap_or_else {
+    ($opt:expr, $else_block:block) => {
+        match $opt {
+            None => $else_block,
+            Some(x) => x,
+        }
+    };
+}
+
+macro_rules! unwrap_or_return {
+    ($opt:expr, $retval:expr) => {
+        unwrap_or_else!($opt, { return $retval })
+    };
+}
+
+macro_rules! time {
+    ($e:expr) => {{
+        let now = ::std::time::Instant::now();
+        let result = $e;
+        let d = now.elapsed();
+        let dt = d.as_secs() * 1_000_000_000 + u64::from(d.subsec_nanos());
+        (result, dt)
+    }};
+}