json_ld_expansion_next/
expanded.rs

1use json_ld_core_next::IndexedObject;
2
3pub enum Expanded<T, B> {
4	Null,
5	Object(IndexedObject<T, B>),
6	Array(Vec<IndexedObject<T, B>>),
7}
8
9impl<T, B> Expanded<T, B> {
10	pub fn len(&self) -> usize {
11		match self {
12			Expanded::Null => 0,
13			Expanded::Object(_) => 1,
14			Expanded::Array(ary) => ary.len(),
15		}
16	}
17
18	pub fn is_empty(&self) -> bool {
19		self.len() == 0
20	}
21
22	pub fn is_null(&self) -> bool {
23		matches!(self, Expanded::Null)
24	}
25
26	pub fn is_list(&self) -> bool {
27		match self {
28			Expanded::Object(o) => o.is_list(),
29			_ => false,
30		}
31	}
32
33	pub fn iter(&self) -> Iter<T, B> {
34		match self {
35			Expanded::Null => Iter::Null,
36			Expanded::Object(ref o) => Iter::Object(Some(o)),
37			Expanded::Array(ary) => Iter::Array(ary.iter()),
38		}
39	}
40}
41
42impl<T, B> IntoIterator for Expanded<T, B> {
43	type Item = IndexedObject<T, B>;
44	type IntoIter = IntoIter<T, B>;
45
46	fn into_iter(self) -> IntoIter<T, B> {
47		match self {
48			Expanded::Null => IntoIter::Null,
49			Expanded::Object(o) => IntoIter::Object(Some(o)),
50			Expanded::Array(ary) => IntoIter::Array(ary.into_iter()),
51		}
52	}
53}
54
55impl<'a, T, B> IntoIterator for &'a Expanded<T, B> {
56	type Item = &'a IndexedObject<T, B>;
57	type IntoIter = Iter<'a, T, B>;
58
59	fn into_iter(self) -> Iter<'a, T, B> {
60		self.iter()
61	}
62}
63
64pub enum Iter<'a, T, B> {
65	Null,
66	Object(Option<&'a IndexedObject<T, B>>),
67	Array(std::slice::Iter<'a, IndexedObject<T, B>>),
68}
69
70impl<'a, T, B> Iterator for Iter<'a, T, B> {
71	type Item = &'a IndexedObject<T, B>;
72
73	fn next(&mut self) -> Option<&'a IndexedObject<T, B>> {
74		match self {
75			Iter::Null => None,
76			Iter::Object(ref mut o) => {
77				let mut result = None;
78				std::mem::swap(o, &mut result);
79				result
80			}
81			Iter::Array(ref mut it) => it.next(),
82		}
83	}
84}
85
86pub enum IntoIter<T, B> {
87	Null,
88	Object(Option<IndexedObject<T, B>>),
89	Array(std::vec::IntoIter<IndexedObject<T, B>>),
90}
91
92impl<T, B> Iterator for IntoIter<T, B> {
93	type Item = IndexedObject<T, B>;
94
95	fn next(&mut self) -> Option<IndexedObject<T, B>> {
96		match self {
97			IntoIter::Null => None,
98			IntoIter::Object(ref mut o) => {
99				let mut result = None;
100				std::mem::swap(o, &mut result);
101				result
102			}
103			IntoIter::Array(ref mut it) => it.next(),
104		}
105	}
106}
107
108impl<T, B> From<IndexedObject<T, B>> for Expanded<T, B> {
109	fn from(obj: IndexedObject<T, B>) -> Expanded<T, B> {
110		Expanded::Object(obj)
111	}
112}
113
114impl<T, B> From<Vec<IndexedObject<T, B>>> for Expanded<T, B> {
115	fn from(list: Vec<IndexedObject<T, B>>) -> Expanded<T, B> {
116		Expanded::Array(list)
117	}
118}
json_ld_expansion_next/expanded.rs

json_ld_expansion_next/
expanded.rs
