module intern

@[heap]
pub struct InternPool {
pub mut:
	strings map[string]string
}

pub fn (mut ip InternPool) intern(s string) string {
	if s in ip.strings {
		return ip.strings[s]
	}
	ip.strings[s] = s
	return s
}

pub fn (mut ip InternPool) count() int {
	return ip.strings.len
}

pub fn (mut ip InternPool) clear() {
	ip.strings.clear()
}