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#[derive(Copy, Clone, Debug)]
pub enum Level {
Critical,
Error,
Warning,
Info,
Debug,
Trace
}
impl Level {
pub fn as_str(&self) -> &'static str {
match *self {
Level::Critical => "CRIT",
Level::Error => "ERRO",
Level::Warning => "WARN",
Level::Info => "INFO",
Level::Debug => "DEBG",
Level::Trace => "TRCE",
}
}
pub fn as_int(&self) -> i32 {
match *self {
Level::Critical => 0,
Level::Error => 1,
Level::Warning => 2,
Level::Info => 3,
Level::Debug => 4,
Level::Trace => 5,
}
}
}
impl fmt::Display for Level {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{}", self.as_str())
}
}
impl Level {
fn is_at_least(&self, level : Self) -> bool {
self.as_int() <= level.as_int()
}
}
#[test]
fn level_at_least() {
assert!(Level::Debug.is_at_least(Level::Debug));
assert!(Level::Debug.is_at_least(Level::Trace));
assert!(!Level::Debug.is_at_least(Level::Info));
}