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
|
use std::collections::HashSet;
use std::fmt;
use std::hash::Hash;
use std::str::FromStr;
use super::{FightOutcome, SearchField};
use chrono::Weekday;
use evtclib::statistics::gamedata::Boss;
pub trait Variants: Copy {
type Output: Iterator<Item = Self>;
fn variants() -> Self::Output;
}
macro_rules! variants {
($target:ident => $($var:ident),+) => {
impl Variants for $target {
type Output = ::std::iter::Cloned<::std::slice::Iter<'static, Self>>;
fn variants() -> Self::Output {
// Exhaustiveness check
#[allow(dead_code)]
fn exhaustiveness_check(value: $target) {
match value {
$($target :: $var => ()),+
}
}
// Actual result
[
$($target :: $var),+
].iter().cloned()
}
}
};
($target:ident => $($var:ident,)+) => {
variants!($target => $($var),+);
};
}
variants! { SearchField => Account, Character, Guild }
variants! { FightOutcome => Success, Wipe }
variants! { Weekday => Mon, Tue, Wed, Thu, Fri, Sat, Sun }
variants! { Boss =>
ValeGuardian, Gorseval, Sabetha,
Slothasor, Matthias,
KeepConstruct, Xera,
Cairn, MursaatOverseer, Samarog, Deimos,
SoullessHorror, Dhuum,
ConjuredAmalgamate, LargosTwins, Qadim,
CardinalAdina, CardinalSabir, QadimThePeerless,
IcebroodConstruct, VoiceOfTheFallen, FraenirOfJormag, Boneskinner, WhisperOfJormag,
Skorvald, Artsariiv, Arkk,
MAMA, Siax, Ensolyss,
}
/// The character that delimits items from each other.
const DELIMITER: char = ',';
/// The character that negates the result.
const NEGATOR: char = '!';
/// A list that is given as comma-separated values.
#[derive(Debug, Clone)]
pub struct CommaSeparatedList<T: Eq + Hash + fmt::Debug> {
values: HashSet<T>,
}
#[derive(Debug, Clone)]
pub enum ParseError<E> {
Underlying(E),
}
impl<E: fmt::Display> fmt::Display for ParseError<E> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
ParseError::Underlying(ref e) => e.fmt(f),
}
}
}
impl<T> FromStr for CommaSeparatedList<T>
where
T: FromStr + Variants + Hash + Eq + fmt::Debug,
{
type Err = ParseError<T::Err>;
fn from_str(input: &str) -> Result<Self, Self::Err> {
if input == "*" {
Ok(CommaSeparatedList {
values: T::variants().collect(),
})
} else if input.starts_with(NEGATOR) {
let no_csl = CommaSeparatedList::from_str(&input[1..])?;
let all_values = T::variants().collect::<HashSet<_>>();
Ok(CommaSeparatedList {
values: all_values.difference(&no_csl.values).cloned().collect(),
})
} else {
let parts = input.split(DELIMITER);
let values = parts
.map(FromStr::from_str)
.collect::<Result<HashSet<_>, _>>()
.map_err(ParseError::Underlying)?;
Ok(CommaSeparatedList { values })
}
}
}
impl<T> CommaSeparatedList<T>
where
T: Hash + Eq + fmt::Debug,
{
pub fn contains(&self, value: &T) -> bool {
self.values.contains(value)
}
pub fn values(&self) -> &HashSet<T> {
&self.values
}
}
// We allow implicit hasher because then it's a zero-cost conversion, as we're just unwrapping the
// values.
#[allow(clippy::implicit_hasher)]
impl<T> From<CommaSeparatedList<T>> for HashSet<T>
where
T: Hash + Eq + fmt::Debug,
{
fn from(csl: CommaSeparatedList<T>) -> Self {
csl.values
}
}
|
