1 files changed, 23 insertions, 0 deletions
diff --git a/src/lib.rs b/src/lib.rs
index 1d6e2d1..95647ff 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -18,8 +18,31 @@ pub use tendril;
 #[macro_use]
 mod macros;
 
+/// Create a [`SmallCharSet`], with each space-separated number stored in the set.
+///
+/// # Examples
+///
+/// ```
+/// # #[macro_use] extern crate markup5ever;
+/// # fn main() {
+/// let set = small_char_set!(12 54 42);
+/// assert_eq!(set.bits,
+///            0b00000000_01000000_00000100_00000000_00000000_00000000_00010000_00000000);
+/// # }
+/// ```
+///
+/// [`SmallCharSet`]: struct.SmallCharSet.html
+#[macro_export]
+macro_rules! small_char_set ( ($($e:expr)+) => (
+    $ crate ::util::smallcharset::SmallCharSet {
+        bits: $( (1 << ($e as usize)) )|+
+    }
+));
+
 mod util {
     pub mod str;
+    pub mod buffer_queue;
+    pub mod smallcharset;
 }
 
 pub mod tokenizer;