binator 0.1.1

Parser Combinator
Documentation 
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

#[cfg(feature = "alloc")]
use alloc::collections::{
  BTreeMap,
  BTreeSet,
  BinaryHeap,
  LinkedList,
  VecDeque,
};
#[cfg(feature = "hashmap")]
use core::hash::{
  BuildHasher,
  Hash,
};
#[cfg(feature = "hashmap")]
use std::collections::{
  HashMap,
  HashSet,
};

#[cfg(feature = "smallvec")]
use smallvec::SmallVec;

/// Abstracts something which can extend an `&mut self`.
pub trait Extend {
  /// item of the collection
  type Item;

  /// Used to extend a collection with an IntoIterator object.
  fn extend<Items>(&mut self, items: Items)
  where
    Items: IntoIterator<Item = Self::Item>;
}

#[cfg(feature = "alloc")]
impl<Item> Extend for alloc::vec::Vec<Item> {
  type Item = Item;

  fn extend<Items>(&mut self, items: Items)
  where
    Items: IntoIterator<Item = Item>,
  {
    core::iter::Extend::extend(self, items);
  }
}

#[cfg(feature = "alloc")]
impl<Item> Extend for VecDeque<Item> {
  type Item = Item;

  fn extend<Items>(&mut self, items: Items)
  where
    Items: IntoIterator<Item = Self::Item>,
  {
    core::iter::Extend::extend(self, items);
  }
}

#[cfg(feature = "alloc")]
impl<Key: Ord, Value> Extend for BTreeMap<Key, Value> {
  type Item = (Key, Value);

  fn extend<Items>(&mut self, items: Items)
  where
    Items: IntoIterator<Item = Self::Item>,
  {
    core::iter::Extend::extend(self, items);
  }
}

#[cfg(feature = "alloc")]
impl<Item: Ord> Extend for BinaryHeap<Item> {
  type Item = Item;

  fn extend<Items>(&mut self, items: Items)
  where
    Items: IntoIterator<Item = Self::Item>,
  {
    core::iter::Extend::extend(self, items);
  }
}

#[cfg(feature = "hashmap")]
impl<Key: Eq + Hash, Value, Seed: BuildHasher> Extend for HashMap<Key, Value, Seed> {
  type Item = (Key, Value);

  fn extend<Items>(&mut self, items: Items)
  where
    Items: IntoIterator<Item = Self::Item>,
  {
    core::iter::Extend::extend(self, items);
  }
}

#[cfg(feature = "hashmap")]
impl<Item: Eq + Hash, Seed: BuildHasher> Extend for HashSet<Item, Seed> {
  type Item = Item;

  fn extend<Items>(&mut self, items: Items)
  where
    Items: IntoIterator<Item = Self::Item>,
  {
    core::iter::Extend::extend(self, items);
  }
}

#[cfg(feature = "alloc")]
impl<Item: Ord> Extend for BTreeSet<Item> {
  type Item = Item;

  fn extend<Items>(&mut self, items: Items)
  where
    Items: IntoIterator<Item = Self::Item>,
  {
    core::iter::Extend::extend(self, items);
  }
}

#[cfg(feature = "alloc")]
impl<Item> Extend for LinkedList<Item> {
  type Item = Item;

  fn extend<Items>(&mut self, items: Items)
  where
    Items: IntoIterator<Item = Self::Item>,
  {
    core::iter::Extend::extend(self, items);
  }
}

#[cfg(feature = "alloc")]
impl Extend for alloc::string::String {
  type Item = char;

  fn extend<Items>(&mut self, items: Items)
  where
    Items: IntoIterator<Item = Self::Item>,
  {
    core::iter::Extend::extend(self, items);
  }
}

#[cfg(feature = "smallvec")]
impl<Item, const N: usize> Extend for SmallVec<[Item; N]> {
  type Item = Item;

  fn extend<Items>(&mut self, items: Items)
  where
    Items: IntoIterator<Item = Self::Item>,
  {
    core::iter::Extend::extend(self, items)
  }
}

impl Extend for () {
  type Item = ();

  fn extend<Items>(&mut self, _items: Items)
  where
    Items: IntoIterator<Item = Self::Item>,
  {
  }
}