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
|
use crate::*;
use alloc::vec::Vec;
use core::convert::TryFrom;
use core::iter::FromIterator;
/// The `SET OF` object is an unordered list of homogeneous types.
///
/// # Examples
///
/// ```
/// use asn1_rs::SetOf;
/// use std::iter::FromIterator;
///
/// // build set
/// let it = [2, 3, 4].iter();
/// let set = SetOf::from_iter(it);
///
/// // `set` now contains the serialized DER representation of the array
///
/// // iterate objects
/// let mut sum = 0;
/// for item in set.iter() {
/// // item has type `Result<u32>`, since parsing the serialized bytes could fail
/// sum += *item;
/// }
/// assert_eq!(sum, 9);
///
/// ```
#[derive(Debug)]
pub struct SetOf<T> {
items: Vec<T>,
}
impl<T> SetOf<T> {
/// Builds a `SET OF` from the provided content
#[inline]
pub const fn new(items: Vec<T>) -> Self {
SetOf { items }
}
/// Returns the length of this `SET` (the number of items).
#[inline]
pub fn len(&self) -> usize {
self.items.len()
}
/// Returns `true` if this `SET` is empty.
#[inline]
pub fn is_empty(&self) -> bool {
self.items.is_empty()
}
/// Returns an iterator over the items of the `SET`.
#[inline]
pub fn iter(&self) -> impl Iterator<Item = &T> {
self.items.iter()
}
}
impl<T> AsRef<[T]> for SetOf<T> {
fn as_ref(&self) -> &[T] {
&self.items
}
}
impl<'a, T> IntoIterator for &'a SetOf<T> {
type Item = &'a T;
type IntoIter = core::slice::Iter<'a, T>;
fn into_iter(self) -> core::slice::Iter<'a, T> {
self.items.iter()
}
}
impl<'a, T> IntoIterator for &'a mut SetOf<T> {
type Item = &'a mut T;
type IntoIter = core::slice::IterMut<'a, T>;
fn into_iter(self) -> core::slice::IterMut<'a, T> {
self.items.iter_mut()
}
}
impl<T> From<SetOf<T>> for Vec<T> {
fn from(set: SetOf<T>) -> Self {
set.items
}
}
impl<T> FromIterator<T> for SetOf<T> {
fn from_iter<IT: IntoIterator<Item = T>>(iter: IT) -> Self {
let items = iter.into_iter().collect();
SetOf::new(items)
}
}
impl<'a, T> TryFrom<Any<'a>> for SetOf<T>
where
T: FromBer<'a>,
{
type Error = Error;
fn try_from(any: Any<'a>) -> Result<Self> {
any.tag().assert_eq(Self::TAG)?;
if !any.header.is_constructed() {
return Err(Error::ConstructExpected);
}
let items = SetIterator::<T, BerParser>::new(any.data).collect::<Result<Vec<T>>>()?;
Ok(SetOf::new(items))
}
}
impl<T> CheckDerConstraints for SetOf<T>
where
T: CheckDerConstraints,
{
fn check_constraints(any: &Any) -> Result<()> {
any.tag().assert_eq(Self::TAG)?;
any.header.assert_constructed()?;
for item in SetIterator::<Any, DerParser>::new(any.data) {
let item = item?;
T::check_constraints(&item)?;
}
Ok(())
}
}
impl<T> DerAutoDerive for SetOf<T> {}
impl<T> Tagged for SetOf<T> {
const TAG: Tag = Tag::Set;
}
#[cfg(feature = "std")]
impl<T> ToDer for SetOf<T>
where
T: ToDer,
{
fn to_der_len(&self) -> Result<usize> {
self.items.to_der_len()
}
fn write_der_header(&self, writer: &mut dyn std::io::Write) -> SerializeResult<usize> {
self.items.write_der_header(writer)
}
fn write_der_content(&self, writer: &mut dyn std::io::Write) -> SerializeResult<usize> {
self.items.write_der_content(writer)
}
}
|
