Macro quote_token 

#[doc(hidden)]
macro_rules! quote_token {
    ($ident:ident $tokens:ident) => { ... };
    (:: $tokens:ident) => { ... };
    (( $($inner:tt)* ) $tokens:ident) => { ... };
    ([ $($inner:tt)* ] $tokens:ident) => { ... };
    ({ $($inner:tt)* } $tokens:ident) => { ... };
    (# $tokens:ident) => { ... };
    (, $tokens:ident) => { ... };
    (. $tokens:ident) => { ... };
    (; $tokens:ident) => { ... };
    (: $tokens:ident) => { ... };
    (+ $tokens:ident) => { ... };
    (+= $tokens:ident) => { ... };
    (& $tokens:ident) => { ... };
    (&& $tokens:ident) => { ... };
    (&= $tokens:ident) => { ... };
    (@ $tokens:ident) => { ... };
    (! $tokens:ident) => { ... };
    (^ $tokens:ident) => { ... };
    (^= $tokens:ident) => { ... };
    (/ $tokens:ident) => { ... };
    (/= $tokens:ident) => { ... };
    (.. $tokens:ident) => { ... };
    (... $tokens:ident) => { ... };
    (..= $tokens:ident) => { ... };
    (= $tokens:ident) => { ... };
    (== $tokens:ident) => { ... };
    (>= $tokens:ident) => { ... };
    (> $tokens:ident) => { ... };
    (<= $tokens:ident) => { ... };
    (< $tokens:ident) => { ... };
    (*= $tokens:ident) => { ... };
    (!= $tokens:ident) => { ... };
    (| $tokens:ident) => { ... };
    (|= $tokens:ident) => { ... };
    (|| $tokens:ident) => { ... };
    (? $tokens:ident) => { ... };
    (-> $tokens:ident) => { ... };
    (<- $tokens:ident) => { ... };
    (% $tokens:ident) => { ... };
    (%= $tokens:ident) => { ... };
    (=> $tokens:ident) => { ... };
    (<< $tokens:ident) => { ... };
    (<<= $tokens:ident) => { ... };
    (>> $tokens:ident) => { ... };
    (>>= $tokens:ident) => { ... };
    (* $tokens:ident) => { ... };
    (- $tokens:ident) => { ... };
    (-= $tokens:ident) => { ... };
    ($lifetime:lifetime $tokens:ident) => { ... };
    (_ $tokens:ident) => { ... };
    ($other:tt $tokens:ident) => { ... };
}