pub trait DatabaseManager<T: Database> {
fn get_database(&mut self, name: &str) -> T;
fn remove_database(&mut self, name: &str);
fn clear_database(&mut self, name: &str);
}
pub trait Database {
fn get_key(&self, name: &str) -> Option<StringOrArray>;
fn write_key(&mut self, name: String, value: StringOrArray);
fn remove_key(&mut self, name: &str);
fn key_exists(&self, name: &str) -> bool;
}
pub struct Placeholder;
impl Database for Placeholder {
fn get_key(&self, _name: &str) -> Option<StringOrArray> {
unimplemented!("`Placeholder is a placeholder")
}
fn write_key(&mut self, _name: String, _value: StringOrArray) {
unimplemented!("`Placeholder is a placeholder")
}
fn remove_key(&mut self, _name: &str) {
unimplemented!("`Placeholder is a placeholder")
}
fn key_exists(&self, _name: &str) -> bool {
unimplemented!("`Placeholder is a placeholder")
}
}
impl DatabaseManager<Placeholder> for Placeholder {
fn get_database(&mut self, _name: &str) -> Placeholder {
unimplemented!("`Placeholder is a placeholder")
}
fn remove_database(&mut self, _name: &str) {
unimplemented!("`Placeholder is a placeholder")
}
fn clear_database(&mut self, _name: &str) {
unimplemented!("`Placeholder is a placeholder")
}
}
#[derive(Debug, PartialEq, Clone)]
pub enum StringOrArray {
String(String),
Array(Vec<String>),
}