advent-of-code/2018/04/src/types.rs

120 lines
2.6 KiB
Rust

use std::{cmp,fmt};
pub struct Event {
pub datetime: DateTime,
pub action: GuardAction,
}
pub enum GuardAction {
BeginShift(i32),
FallAsleep,
WakeUp,
}
pub struct Guard {
pub id: i32,
}
pub struct Shift {
pub guard: Guard,
pub events: Vec<Event>,
}
#[derive(Eq)]
pub struct DateTime {
pub year: i32,
pub month: i32,
pub day: i32,
pub hour: i32,
pub minute: i32,
pub sortable_time: i32,
}
// Calculate the absolute minute count relative to 01/01 0:00. Months are assumed to have 31
// days because we just want to ensure that a higher month always results in a higher
// timestamp. Think of this as a primitive and less correct unix epoch.
pub fn get_sortable_time(year: i32, month: i32, day: i32, hour: i32, minute: i32) -> i32 {
return minute + hour * 60 + day * 60 * 24 + month * 60 * 24 * 31 + year * 60 * 24 * 31 * 12;
}
impl Shift {
pub fn new(gid: i32) -> Self {
Shift {
guard: Guard::new(gid),
events: Vec::new()
}
}
}
impl Guard {
pub fn new(id: i32) -> Self {
Guard { id }
}
}
impl DateTime {
pub fn new(year: i32, month: i32, day: i32, hour: i32, minute: i32) -> Self {
DateTime {
year,
month,
day,
hour,
minute,
sortable_time: get_sortable_time(year, month, day, hour, minute)
}
}
}
impl fmt::Display for DateTime {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{}.{}.{} {}:{}", self.day, self.month, self.year, self.hour, self.minute)
}
}
impl Ord for DateTime {
fn cmp(&self, other: &DateTime) -> cmp::Ordering {
self.sortable_time.cmp(&other.sortable_time)
}
}
impl PartialOrd for DateTime {
fn partial_cmp(&self, other: &DateTime) -> Option<cmp::Ordering> {
Some(other.cmp(self))
}
}
impl PartialEq for DateTime {
fn eq(&self, other: &DateTime) -> bool {
self.sortable_time == other.sortable_time
}
}
impl Event {
pub fn new(datetime: DateTime, action: GuardAction) -> Self {
Event {
datetime,
action
}
}
}
impl Eq for Event {}
impl Ord for Event {
fn cmp(&self, other: &Event) -> cmp::Ordering {
self.datetime.cmp(&other.datetime)
}
}
impl PartialOrd for Event {
fn partial_cmp(&self, other: &Event) -> Option<cmp::Ordering> {
Some(self.cmp(other))
}
}
impl PartialEq for Event {
fn eq(&self, other: &Event) -> bool {
self.datetime == other.datetime
}
}