Invert match_byte feature flag

Signed-off-by: Nico Burns <nico@nicoburns.com>

Author: nicoburns

Cargo.toml

@@ -33,8 +33,9 @@ inherits = "release"
 debug = true
 
 [features]
+default = ["fast_match_byte"]
 bench = []
-dummy_match_byte = []
+fast_match_byte = []
 # Useful for skipping tests when execution is slow, e.g., under miri
 skip_long_tests = []
 

src/lib.rs

@@ -84,7 +84,39 @@ pub use crate::serializer::{serialize_identifier, serialize_name, serialize_stri
 pub use crate::serializer::{CssStringWriter, ToCss, TokenSerializationType};
 pub use crate::tokenizer::{SourceLocation, SourcePosition, Token};
 pub use crate::unicode_range::UnicodeRange;
-pub use cssparser_macros::*;
+pub use cssparser_macros::_cssparser_internal_max_len;
+
+#[cfg(feature = "fast_match_byte")]
+pub use cssparser_macros::match_byte;
+
+#[cfg(not(feature = "fast_match_byte"))]
+#[macro_use]
+mod mac {
+    /// Expand a TokenStream corresponding to the `match_byte` macro.
+    ///
+    /// ## Example
+    ///
+    /// ```rust,ignore
+    /// match_byte! { tokenizer.next_byte_unchecked(),
+    ///     b'a'..b'z' => { ... }
+    ///     b'0'..b'9' => { ... }
+    ///     b'\n' | b'\\' => { ... }
+    ///     foo => { ... }
+    ///  }
+    ///  ```
+    ///
+    #[macro_export]
+    macro_rules! match_byte {
+      ($value:expr, $($rest:tt)* ) => {
+          match $value {
+              $(
+                  $rest
+              )+
+          }
+      };
+  }
+}
+
 #[doc(hidden)]
 pub use phf as _cssparser_internal_phf;
 

src/serializer.rs

@@ -2,10 +2,12 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-use crate::match_byte;
 use std::fmt::{self, Write};
 use std::str;
 
+#[cfg(feature = "fast_match_byte")]
+pub use crate::match_byte;
+
 use super::Token;
 
 /// Trait for things the can serialize themselves in CSS syntax.

src/tokenizer.rs

@@ -10,19 +10,8 @@ use crate::parser::{ArbitrarySubstitutionFunctions, ParserState};
 use std::char;
 use std::ops::Range;
 
-#[cfg(not(feature = "dummy_match_byte"))]
-use cssparser_macros::match_byte;
-
-#[cfg(feature = "dummy_match_byte")]
-macro_rules! match_byte {
-    ($value:expr, $($rest:tt)* ) => {
-        match $value {
-            $(
-                $rest
-            )+
-        }
-    };
-}
+#[cfg(feature = "fast_match_byte")]
+pub use crate::match_byte;
 
 /// One of the pieces the CSS input is broken into.
 ///