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
171
172
173
174
175
176
177
178
179
180
#![allow(clippy::missing_errors_doc)]
use super::{Error, ScMap, ScVal};
pub trait Validate {
type Error;
fn validate(&self) -> Result<(), Self::Error>;
}
impl Validate for ScVal {
type Error = Error;
fn validate(&self) -> Result<(), <Self as Validate>::Error> {
match self {
ScVal::U32(_)
| ScVal::I32(_)
| ScVal::Error(_)
| ScVal::Bool(_)
| ScVal::Void
| ScVal::U64(_)
| ScVal::I64(_)
| ScVal::Timepoint(_)
| ScVal::Duration(_)
| ScVal::U128(_)
| ScVal::I128(_)
| ScVal::U256(_)
| ScVal::I256(_)
| ScVal::Bytes(_)
| ScVal::String(_)
| ScVal::Address(_)
| ScVal::LedgerKeyContractInstance
| ScVal::LedgerKeyNonce(_)
| ScVal::ContractInstance(_) => Ok(()),
ScVal::Vec(Some(v)) => {
for e in v.iter() {
e.validate()?;
}
Ok(())
}
ScVal::Symbol(s) => {
// Symbol is defined as valid per https://github.com/stellar/rs-stellar-contract-env/blob/94c1717516c8fad4ad65caa148183b9fcbc408db/stellar-contract-env-common/src/symbol.rs#L107-L111.
if s.iter()
.all(|c| matches!(*c as char, '_' | '0'..='9' | 'A'..='Z' | 'a'..='z'))
{
Ok(())
} else {
Err(Error::Invalid)
}
}
ScVal::Vec(None) | ScVal::Map(None) => Err(Error::Invalid),
ScVal::Map(Some(m)) => m.validate(),
}
}
}
impl Validate for ScMap {
type Error = Error;
fn validate(&self) -> Result<(), Self::Error> {
// Check every element for validity itself.
for pair in self.iter() {
pair.key.validate()?;
pair.val.validate()?;
}
// Check the map is sorted by key, and there are no keys that are
// duplicates.
if self.windows(2).all(|w| w[0].key < w[1].key) {
Ok(())
} else {
Err(Error::Invalid)
}
}
}
#[cfg(test)]
mod test {
use crate::curr::ScSymbol;
use super::{Error, ScVal, Validate};
#[test]
fn symbol() {
assert_eq!(
ScVal::Symbol(ScSymbol("".try_into().unwrap())).validate(),
Ok(())
);
assert_eq!(
ScVal::Symbol(ScSymbol("a0A_".try_into().unwrap())).validate(),
Ok(())
);
assert_eq!(
ScVal::Symbol(ScSymbol("]".try_into().unwrap())).validate(),
Err(Error::Invalid)
);
}
#[test]
#[cfg(feature = "alloc")]
fn map() {
use super::super::{ScMap, ScMapEntry};
extern crate alloc;
use alloc::vec;
// Maps should be sorted by key and have no duplicates. The sort order
// is just the "normal" sort order on ScVal emitted by derive(PartialOrd).
assert_eq!(
ScVal::Map(Some(ScMap(
vec![
ScMapEntry {
key: ScVal::I64(0),
val: ScVal::U32(1),
},
ScMapEntry {
key: ScVal::I64(1),
val: ScVal::I64(1),
}
]
.try_into()
.unwrap()
)))
.validate(),
Ok(())
);
assert_eq!(
ScVal::Map(Some(ScMap(
vec![
ScMapEntry {
key: ScVal::I64(0),
val: ScVal::I64(1),
},
ScMapEntry {
key: ScVal::I64(1),
val: ScVal::I64(1),
}
]
.try_into()
.unwrap()
)))
.validate(),
Ok(())
);
assert_eq!(
ScVal::Map(Some(ScMap(
vec![
ScMapEntry {
key: ScVal::I64(2),
val: ScVal::I64(1),
},
ScMapEntry {
key: ScVal::I64(1),
val: ScVal::I64(1),
}
]
.try_into()
.unwrap()
)))
.validate(),
Err(Error::Invalid)
);
assert_eq!(
ScVal::Map(Some(ScMap(
vec![
ScMapEntry {
key: ScVal::I64(2),
val: ScVal::I64(1),
},
ScMapEntry {
key: ScVal::U32(1),
val: ScVal::I64(1),
},
]
.try_into()
.unwrap()
)))
.validate(),
Err(Error::Invalid)
);
}
}