Macro count_tts::count_tts

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

Expands to the number of token trees in the macro arguments

Example:

use count_tts::count_tts;

assert_eq!(count_tts!(), 0);
assert_eq!(count_tts!(a b c), 3);
assert_eq!(count_tts!(a (b c)), 2);
assert_eq!(count_tts!(a, b, c), 5);