toml_edit 0.23.4

Yet another format-preserving TOML parser.
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

use std::ops;

use crate::key::Key;
use crate::DocumentMut;
use crate::{value, InlineTable, Item, Table, Value};

// copied from
// https://github.com/serde-rs/json/blob/master/src/value/index.rs

pub trait Index: crate::private::Sealed {
    #[doc(hidden)]
    fn index<'v>(&self, val: &'v Item) -> Option<&'v Item>;
    #[doc(hidden)]
    fn index_mut<'v>(&self, val: &'v mut Item) -> Option<&'v mut Item>;
}

impl Index for usize {
    fn index<'v>(&self, v: &'v Item) -> Option<&'v Item> {
        match *v {
            Item::ArrayOfTables(ref aot) => aot.values.get(*self),
            Item::Value(ref a) if a.is_array() => a.as_array().and_then(|a| a.values.get(*self)),
            _ => None,
        }
    }
    fn index_mut<'v>(&self, v: &'v mut Item) -> Option<&'v mut Item> {
        match *v {
            Item::ArrayOfTables(ref mut vec) => vec.values.get_mut(*self),
            Item::Value(ref mut a) => a.as_array_mut().and_then(|a| a.values.get_mut(*self)),
            _ => None,
        }
    }
}

impl Index for str {
    fn index<'v>(&self, v: &'v Item) -> Option<&'v Item> {
        match *v {
            Item::Table(ref t) => t.get(self),
            Item::Value(ref v) => v
                .as_inline_table()
                .and_then(|t| t.items.get(self))
                .and_then(|value| if !value.is_none() { Some(value) } else { None }),
            _ => None,
        }
    }
    fn index_mut<'v>(&self, v: &'v mut Item) -> Option<&'v mut Item> {
        if let Item::None = *v {
            let mut t = InlineTable::default();
            t.items.insert(Key::new(self), Item::None);
            *v = value(Value::InlineTable(t));
        }
        match *v {
            Item::Table(ref mut t) => Some(t.entry(self).or_insert(Item::None)),
            Item::Value(ref mut v) => v
                .as_inline_table_mut()
                .map(|t| t.items.entry(Key::new(self)).or_insert_with(|| Item::None)),
            _ => None,
        }
    }
}

impl Index for String {
    fn index<'v>(&self, v: &'v Item) -> Option<&'v Item> {
        self[..].index(v)
    }
    fn index_mut<'v>(&self, v: &'v mut Item) -> Option<&'v mut Item> {
        self[..].index_mut(v)
    }
}

impl<T: ?Sized> Index for &T
where
    T: Index,
{
    fn index<'v>(&self, v: &'v Item) -> Option<&'v Item> {
        (**self).index(v)
    }
    fn index_mut<'v>(&self, v: &'v mut Item) -> Option<&'v mut Item> {
        (**self).index_mut(v)
    }
}

impl<I> ops::Index<I> for Item
where
    I: Index,
{
    type Output = Self;

    fn index(&self, index: I) -> &Self {
        index.index(self).expect("index not found")
    }
}

impl<I> ops::IndexMut<I> for Item
where
    I: Index,
{
    fn index_mut(&mut self, index: I) -> &mut Self {
        index.index_mut(self).expect("index not found")
    }
}

impl<'s> ops::Index<&'s str> for Table {
    type Output = Item;

    fn index(&self, key: &'s str) -> &Item {
        self.get(key).expect("index not found")
    }
}

impl<'s> ops::IndexMut<&'s str> for Table {
    fn index_mut(&mut self, key: &'s str) -> &mut Item {
        self.entry(key).or_insert(Item::None)
    }
}

impl<'s> ops::Index<&'s str> for InlineTable {
    type Output = Value;

    fn index(&self, key: &'s str) -> &Value {
        self.get(key).expect("index not found")
    }
}

impl<'s> ops::IndexMut<&'s str> for InlineTable {
    fn index_mut(&mut self, key: &'s str) -> &mut Value {
        self.get_mut(key).expect("index not found")
    }
}

impl<'s> ops::Index<&'s str> for DocumentMut {
    type Output = Item;

    fn index(&self, key: &'s str) -> &Item {
        self.root.index(key)
    }
}

impl<'s> ops::IndexMut<&'s str> for DocumentMut {
    fn index_mut(&mut self, key: &'s str) -> &mut Item {
        self.root.index_mut(key)
    }
}