1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170

//! `HumanAddr`<->`CanonicalAddr` conversion

use crate::cosmwasm_std::{
    self,
    StdResult, HumanAddr, CanonicalAddr, Api, Uint128, Coin, Binary, Decimal,
    ContractInfo, BlockInfo, MessageInfo, Validator, Delegation, FullDelegation,
    Empty
};

pub trait Canonize {
    type Output: Humanize;

    fn canonize(self, api: &impl Api) -> StdResult<Self::Output>;
}

pub trait Humanize {
    type Output: Canonize;

    fn humanize(self, api: &impl Api) -> StdResult<Self::Output>;
}

/// Attempting to canonicalize an empty address will fail. 
/// This function skips calling `canonical_address` if the input is empty
/// and returns `CanonicalAddr::default()` instead.
pub fn canonize_maybe_empty(api: &impl Api, addr: &HumanAddr) -> StdResult<CanonicalAddr> {
    Ok(
        if *addr == HumanAddr::default() {
            CanonicalAddr::default()
        } else {
            api.canonical_address(addr)?
        }
    )
}

/// Attempting to humanize an empty address will fail. 
/// This function skips calling `human_address` if the input is empty
/// and returns `HumanAddr::default()` instead.
pub fn humanize_maybe_empty(api: &impl Api, addr: &CanonicalAddr) -> StdResult<HumanAddr> {
    Ok(
        if *addr == CanonicalAddr::default() {
            HumanAddr::default()
        } else {
            api.human_address(addr)?
        }
    )
}

impl Humanize for CanonicalAddr {
    type Output = HumanAddr;

    fn humanize(self, api: &impl Api) -> StdResult<Self::Output> {
        humanize_maybe_empty(api, &self)
    }
}

impl Canonize for HumanAddr {
    type Output = CanonicalAddr;

    fn canonize(self, api: &impl Api) -> StdResult<Self::Output> {
        canonize_maybe_empty(api, &self)
    }
}

impl Humanize for &CanonicalAddr {
    type Output = HumanAddr;

    fn humanize(self, api: &impl Api) -> StdResult<Self::Output> {
        humanize_maybe_empty(api, self)
    }
}

impl Canonize for &HumanAddr {
    type Output = CanonicalAddr;

    fn canonize(self, api: &impl Api) -> StdResult<Self::Output> {
        canonize_maybe_empty(api, self)
    }
}

impl<T: Humanize> Humanize for Vec<T> {
    type Output = Vec<T::Output>;

    fn humanize(self, api: &impl Api) -> StdResult<Self::Output> {
        self.into_iter().map(|x| x.humanize(api)).collect()
    }
}

impl<T: Canonize> Canonize for Vec<T> {
    type Output = Vec<T::Output>;

    fn canonize(self, api: &impl Api) -> StdResult<Self::Output> {
        self.into_iter().map(|x| x.canonize(api)).collect()
    }
}

impl<T: Humanize> Humanize for Option<T> {
    type Output = Option<T::Output>;

    fn humanize(self, api: &impl Api) -> StdResult<Self::Output> {
        match self {
            Some(item) => Ok(Some(item.humanize(api)?)),
            None => Ok(None)
        }
    }
}

impl<T: Canonize> Canonize for Option<T> {
    type Output = Option<T::Output>;

    fn canonize(self, api: &impl Api) -> StdResult<Self::Output> {
        match self {
            Some(item) => Ok(Some(item.canonize(api)?)),
            None => Ok(None)
        }
    }
}

#[macro_export]
macro_rules! impl_canonize_default {
    ($ty: ty) => {
        impl Humanize for $ty {
            type Output = Self;
        
            #[inline(always)]
            fn humanize(self, _api: &impl cosmwasm_std::Api) -> cosmwasm_std::StdResult<Self::Output> {
                Ok(self)
            }
        }
        
        impl Canonize for $ty {
            type Output = Self;
        
            #[inline(always)]
            fn canonize(self, _api: &impl cosmwasm_std::Api) -> cosmwasm_std::StdResult<Self::Output> {
                Ok(self)
            }
        }
    }
}

impl_canonize_default!(u8);
impl_canonize_default!(u16);
impl_canonize_default!(u32);
impl_canonize_default!(u64);
impl_canonize_default!(u128);
impl_canonize_default!(Uint128);
impl_canonize_default!(Decimal);

impl_canonize_default!(i8);
impl_canonize_default!(i16);
impl_canonize_default!(i32);
impl_canonize_default!(i64);
impl_canonize_default!(i128);

impl_canonize_default!(String);
impl_canonize_default!(char);
impl_canonize_default!(bool);
impl_canonize_default!(isize);
impl_canonize_default!(usize);
impl_canonize_default!(&str);

impl_canonize_default!(Binary);
impl_canonize_default!(Coin);
impl_canonize_default!(BlockInfo);
impl_canonize_default!(ContractInfo);
impl_canonize_default!(MessageInfo);
impl_canonize_default!(Validator);
impl_canonize_default!(Delegation);
impl_canonize_default!(FullDelegation);
impl_canonize_default!(Empty);