Macro match_byte 

match_byte!() { /* proc-macro */ }

Expand a TokenStream corresponding to the match_byte macro.

Example

match_byte! { tokenizer.next_byte_unchecked(),
    b'a'..b'z' => { ... }
    b'0'..b'9' => { ... }
    b'\n' | b'\\' => { ... }
    foo => { ... }
 }