validate.gno

 1package game
 2
 3// validAddress is the one string rule of this realm: the addresses it keys
 4// on. Everything else it prints is a number, a param key from its own
 5// registry or an address checked here.
 6
 7// validAddress reports whether addr is a valid address in its canonical,
 8// lowercase form.
 9//
10// Bech32 can also be written in all capitals, and address.IsValid accepts
11// that. To this realm the capitals would be a second key for the same
12// account: a second player record, a second line on a leaderboard, an admin
13// who can never be matched to a caller. Bech32 does not allow mixing cases,
14// so looking at the first character is enough.
15func validAddress(addr address) bool {
16	return addr.IsValid() && addr[0] == 'g'
17}