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Simplify implementation of UserOrgType::cmp()

Also move `UserOrgType::from_str()` closer to the definition of `UserOrgType`
since it references specific enum values.
This commit is contained in:
Jeremy Lin 2020-09-13 02:03:16 -07:00
parent a0d92a167c
commit 0eee907c88

View file

@ -44,24 +44,28 @@ pub enum UserOrgType {
Manager = 3, Manager = 3,
} }
impl UserOrgType {
pub fn from_str(s: &str) -> Option<Self> {
match s {
"0" | "Owner" => Some(UserOrgType::Owner),
"1" | "Admin" => Some(UserOrgType::Admin),
"2" | "User" => Some(UserOrgType::User),
"3" | "Manager" => Some(UserOrgType::Manager),
_ => None,
}
}
}
impl Ord for UserOrgType { impl Ord for UserOrgType {
fn cmp(&self, other: &UserOrgType) -> Ordering { fn cmp(&self, other: &UserOrgType) -> Ordering {
if self == other { // For easy comparison, map each variant to an access level (where 0 is lowest).
Ordering::Equal static ACCESS_LEVEL: [i32; 4] = [
} else { 3, // Owner
match self { 2, // Admin
UserOrgType::Owner => Ordering::Greater, 0, // User
UserOrgType::Admin => match other { 1, // Manager
UserOrgType::Owner => Ordering::Less, ];
_ => Ordering::Greater, ACCESS_LEVEL[*self as usize].cmp(&ACCESS_LEVEL[*other as usize])
},
UserOrgType::Manager => match other {
UserOrgType::Owner | UserOrgType::Admin => Ordering::Less,
_ => Ordering::Greater,
},
UserOrgType::User => Ordering::Less,
}
}
} }
} }
@ -129,18 +133,6 @@ impl PartialOrd<UserOrgType> for i32 {
} }
} }
impl UserOrgType {
pub fn from_str(s: &str) -> Option<Self> {
match s {
"0" | "Owner" => Some(UserOrgType::Owner),
"1" | "Admin" => Some(UserOrgType::Admin),
"2" | "User" => Some(UserOrgType::User),
"3" | "Manager" => Some(UserOrgType::Manager),
_ => None,
}
}
}
/// Local methods /// Local methods
impl Organization { impl Organization {
pub fn new(name: String, billing_email: String) -> Self { pub fn new(name: String, billing_email: String) -> Self {
@ -533,3 +525,16 @@ impl UserOrganization {
}} }}
} }
} }
#[cfg(test)]
mod tests {
use super::*;
#[test]
#[allow(non_snake_case)]
fn partial_cmp_UserOrgType() {
assert!(UserOrgType::Owner > UserOrgType::Admin);
assert!(UserOrgType::Admin > UserOrgType::Manager);
assert!(UserOrgType::Manager > UserOrgType::User);
}
}