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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
use crate::Error;
/// List of possible interests for a domain. Domains can have be associated with one or multiple
/// interests. `Inconclusive` is used for domains in the user's top sites that we can't classify
/// because there's no corresponding entry in the interest database.
#[derive(Clone, Copy, Debug, Hash, PartialEq, Eq, PartialOrd, Ord)]
#[repr(u32)]
pub enum Interest {
// Note: if you change these codes, make sure to update the `TryFrom<u32>` implementation and
// the `test_interest_code_conversion` test.
Inconclusive = 0,
Animals = 1,
Arts = 2,
Autos = 3,
Business = 4,
Career = 5,
Education = 6,
Fashion = 7,
Finance = 8,
Food = 9,
Government = 10,
//Disable this per policy consultation
// Health = 11,
Hobbies = 12,
Home = 13,
News = 14,
RealEstate = 15,
Society = 16,
Sports = 17,
Tech = 18,
Travel = 19,
}
impl From<Interest> for u32 {
fn from(interest: Interest) -> Self {
interest as u32
}
}
impl From<Interest> for usize {
fn from(interest: Interest) -> Self {
interest as usize
}
}
impl TryFrom<u32> for Interest {
// On error, return the invalid code back
type Error = Error;
fn try_from(code: u32) -> Result<Self, Self::Error> {
match code {
0 => Ok(Self::Inconclusive),
1 => Ok(Self::Animals),
2 => Ok(Self::Arts),
3 => Ok(Self::Autos),
4 => Ok(Self::Business),
5 => Ok(Self::Career),
6 => Ok(Self::Education),
7 => Ok(Self::Fashion),
8 => Ok(Self::Finance),
9 => Ok(Self::Food),
10 => Ok(Self::Government),
//Disable this per policy consultation
// 11 => Ok(Self::Health),
12 => Ok(Self::Hobbies),
13 => Ok(Self::Home),
14 => Ok(Self::News),
15 => Ok(Self::RealEstate),
16 => Ok(Self::Society),
17 => Ok(Self::Sports),
18 => Ok(Self::Tech),
19 => Ok(Self::Travel),
n => Err(Error::InvalidInterestCode(n)),
}
}
}
impl Interest {
const COUNT: usize = 19;
pub fn all() -> [Interest; Self::COUNT] {
[
Self::Inconclusive,
Self::Animals,
Self::Arts,
Self::Autos,
Self::Business,
Self::Career,
Self::Education,
Self::Fashion,
Self::Finance,
Self::Food,
Self::Government,
// Self::Health,
Self::Hobbies,
Self::Home,
Self::News,
Self::RealEstate,
Self::Society,
Self::Sports,
Self::Tech,
Self::Travel,
]
}
}
/// Vector storing a count value for each interest
///
/// Here "vector" refers to the mathematical object, not a Rust `Vec`. It always has a fixed
/// number of elements.
#[derive(Debug, Default, PartialEq, Eq)]
pub struct InterestVector {
pub inconclusive: u32,
pub animals: u32,
pub arts: u32,
pub autos: u32,
pub business: u32,
pub career: u32,
pub education: u32,
pub fashion: u32,
pub finance: u32,
pub food: u32,
pub government: u32,
// pub health: u32,
pub hobbies: u32,
pub home: u32,
pub news: u32,
pub real_estate: u32,
pub society: u32,
pub sports: u32,
pub tech: u32,
pub travel: u32,
}
impl std::ops::Add for InterestVector {
type Output = Self;
fn add(self, other: Self) -> Self {
Self {
inconclusive: self.inconclusive + other.inconclusive,
animals: self.animals + other.animals,
arts: self.arts + other.arts,
autos: self.autos + other.autos,
business: self.business + other.business,
career: self.career + other.career,
education: self.education + other.education,
fashion: self.fashion + other.fashion,
finance: self.finance + other.finance,
food: self.food + other.food,
government: self.government + other.government,
hobbies: self.hobbies + other.hobbies,
home: self.home + other.home,
news: self.news + other.news,
real_estate: self.real_estate + other.real_estate,
society: self.society + other.society,
sports: self.sports + other.sports,
tech: self.tech + other.tech,
travel: self.travel + other.travel,
}
}
}
impl std::ops::Index<Interest> for InterestVector {
type Output = u32;
fn index(&self, index: Interest) -> &u32 {
match index {
Interest::Inconclusive => &self.inconclusive,
Interest::Animals => &self.animals,
Interest::Arts => &self.arts,
Interest::Autos => &self.autos,
Interest::Business => &self.business,
Interest::Career => &self.career,
Interest::Education => &self.education,
Interest::Fashion => &self.fashion,
Interest::Finance => &self.finance,
Interest::Food => &self.food,
Interest::Government => &self.government,
// Interest::Health => &self.health,
Interest::Hobbies => &self.hobbies,
Interest::Home => &self.home,
Interest::News => &self.news,
Interest::RealEstate => &self.real_estate,
Interest::Society => &self.society,
Interest::Sports => &self.sports,
Interest::Tech => &self.tech,
Interest::Travel => &self.travel,
}
}
}
impl std::ops::IndexMut<Interest> for InterestVector {
fn index_mut(&mut self, index: Interest) -> &mut u32 {
match index {
Interest::Inconclusive => &mut self.inconclusive,
Interest::Animals => &mut self.animals,
Interest::Arts => &mut self.arts,
Interest::Autos => &mut self.autos,
Interest::Business => &mut self.business,
Interest::Career => &mut self.career,
Interest::Education => &mut self.education,
Interest::Fashion => &mut self.fashion,
Interest::Finance => &mut self.finance,
Interest::Food => &mut self.food,
Interest::Government => &mut self.government,
// Interest::Health => &mut self.health,
Interest::Hobbies => &mut self.hobbies,
Interest::Home => &mut self.home,
Interest::News => &mut self.news,
Interest::RealEstate => &mut self.real_estate,
Interest::Society => &mut self.society,
Interest::Sports => &mut self.sports,
Interest::Tech => &mut self.tech,
Interest::Travel => &mut self.travel,
}
}
}
#[cfg(test)]
mod test {
use super::*;
#[test]
fn test_interest_code_conversion() {
for interest in Interest::all() {
assert_eq!(Interest::try_from(u32::from(interest)).unwrap(), interest)
}
// try_from() for out of bounds codes should return an error
assert!(matches!(
Interest::try_from(20),
Err(Error::InvalidInterestCode(20))
));
assert!(matches!(
Interest::try_from(100),
Err(Error::InvalidInterestCode(100))
));
// Health is currently disabled, so it's code should return None for now
assert!(matches!(
Interest::try_from(11),
Err(Error::InvalidInterestCode(11))
));
}
}
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