pub trait Printer {
fn print(&mut self, text: &str);
fn wait(&mut self);
}
pub struct DummyPrinter;
impl Printer for DummyPrinter {
fn print(&mut self, _: &str) {}
fn wait(&mut self) {}
}
pub struct RecordPrinter(String);
impl RecordPrinter {
pub fn new() -> Self {
Self(String::with_capacity(8196))
}
pub fn text(&self) -> &str {
&self.0
}
}
impl Printer for RecordPrinter {
fn print(&mut self, text: &str) {
self.0 += text;
}
fn wait(&mut self) {
self.0.push('#');
}
}