1use candid::CandidType;
2use canic_memory::impl_storable_bounded;
3use serde::{Deserialize, Serialize};
4use std::{borrow::Borrow, borrow::Cow, fmt, str::FromStr};
5
6const ROOT_ROLE: &str = "root";
7const WASM_STORE_ROLE: &str = "wasm_store";
8
9#[derive(
14 CandidType, Clone, Debug, Eq, Ord, PartialOrd, Deserialize, Serialize, PartialEq, Hash,
15)]
16#[serde(transparent)]
17pub struct CanisterRole(pub Cow<'static, str>);
18
19impl CanisterRole {
20 pub const ROOT: Self = Self(Cow::Borrowed(ROOT_ROLE));
21 pub const WASM_STORE: Self = Self(Cow::Borrowed(WASM_STORE_ROLE));
22
23 #[must_use]
24 pub const fn new(s: &'static str) -> Self {
25 Self(Cow::Borrowed(s))
26 }
27
28 #[must_use]
29 pub const fn owned(s: String) -> Self {
30 Self(Cow::Owned(s))
31 }
32
33 #[must_use]
34 pub fn as_str(&self) -> &str {
35 &self.0
36 }
37
38 #[must_use]
39 pub fn is_root(&self) -> bool {
40 self.0.as_ref() == ROOT_ROLE
41 }
42
43 #[must_use]
44 pub fn is_wasm_store(&self) -> bool {
45 self.0.as_ref() == WASM_STORE_ROLE
46 }
47
48 #[must_use]
49 pub fn into_string(self) -> String {
50 self.0.into_owned()
51 }
52}
53
54impl FromStr for CanisterRole {
55 type Err = String;
56
57 fn from_str(s: &str) -> Result<Self, Self::Err> {
58 Ok(Self::owned(s.to_string()))
59 }
60}
61
62impl From<&'static str> for CanisterRole {
63 fn from(s: &'static str) -> Self {
64 Self(Cow::Borrowed(s))
65 }
66}
67
68impl From<&String> for CanisterRole {
69 fn from(s: &String) -> Self {
70 Self(Cow::Owned(s.clone()))
71 }
72}
73
74impl From<String> for CanisterRole {
75 fn from(s: String) -> Self {
76 Self(Cow::Owned(s))
77 }
78}
79
80impl From<CanisterRole> for String {
81 fn from(role: CanisterRole) -> Self {
82 role.into_string()
83 }
84}
85
86impl AsRef<str> for CanisterRole {
87 fn as_ref(&self) -> &str {
88 self.as_str()
89 }
90}
91
92impl Borrow<str> for CanisterRole {
93 fn borrow(&self) -> &str {
94 self.as_str()
95 }
96}
97
98impl fmt::Display for CanisterRole {
99 fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
100 f.write_str(self.as_str())
101 }
102}
103
104impl_storable_bounded!(CanisterRole, 64, false);