binserde 0.1.7

A crate for serializing data structures into a binary format
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

use std::io;
use std::io::Write;

use crate::dedup::DedupContext;
use crate::serde::Mode;
use crate::Result;

pub trait BinSerialize {
    fn serialize<S: BinSerializer>(&self, serializer: S) -> Result<()>;
}

pub trait BinSerializer: Sized {
    type Pipe: Write;

    fn pipe(&mut self) -> &mut Self::Pipe;

    fn dedup(&mut self) -> &mut DedupContext;

    fn mode(&self) -> Mode;

    fn with_mode(self, mode: Mode) -> WithMode<Self> {
        WithMode {
            serializer: self,
            mode,
        }
    }

    fn change_mode<F>(self, op: F) -> WithMode<Self>
    where
        F: FnOnce(&mut Mode),
    {
        let mut new_mode = self.mode();
        op(&mut new_mode);
        self.with_mode(new_mode)
    }

    fn disable_dedup(self) -> WithMode<Self> {
        self.change_mode(|mode| mode.use_dedup = false)
    }
}

impl<T> BinSerializer for &mut T
where
    T: BinSerializer,
{
    type Pipe = T::Pipe;

    fn pipe(&mut self) -> &mut Self::Pipe {
        (**self).pipe()
    }

    fn dedup(&mut self) -> &mut DedupContext {
        (**self).dedup()
    }

    fn mode(&self) -> Mode {
        (**self).mode()
    }
}

pub struct BinSerializerBase<W> {
    pipe: W,
    dedup: DedupContext,
}

impl<W> BinSerializerBase<W> {
    pub fn new(pipe: W) -> Self {
        BinSerializerBase {
            pipe,
            dedup: DedupContext::new(),
        }
    }

    pub fn into_pipe(self) -> W {
        self.pipe
    }
}

impl<W> BinSerializer for BinSerializerBase<W>
where
    W: Write,
{
    type Pipe = W;
    fn pipe(&mut self) -> &mut Self::Pipe {
        &mut self.pipe
    }

    fn dedup(&mut self) -> &mut DedupContext {
        &mut self.dedup
    }

    fn mode(&self) -> Mode {
        Mode::default()
    }
}

pub struct WithMode<S> {
    serializer: S,
    mode: Mode,
}

impl<S> BinSerializer for WithMode<S>
where
    S: BinSerializer,
{
    type Pipe = S::Pipe;

    fn pipe(&mut self) -> &mut Self::Pipe {
        self.serializer.pipe()
    }

    fn dedup(&mut self) -> &mut DedupContext {
        self.serializer.dedup()
    }

    fn mode(&self) -> Mode {
        self.mode
    }
}

pub struct PrescanSerializer {
    pipe: NullWrite,
    dedup: DedupContext,
}

impl PrescanSerializer {
    pub fn new() -> Self {
        PrescanSerializer {
            pipe: NullWrite,
            dedup: DedupContext::new(),
        }
    }
}

impl BinSerializer for PrescanSerializer {
    type Pipe = NullWrite;

    fn pipe(&mut self) -> &mut Self::Pipe {
        &mut self.pipe
    }

    fn dedup(&mut self) -> &mut DedupContext {
        &mut self.dedup
    }

    fn mode(&self) -> Mode {
        Mode::default()
    }
}

pub struct NullWrite;

impl Write for NullWrite {
    fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
        Ok(buf.len())
    }

    fn flush(&mut self) -> io::Result<()> {
        Ok(())
    }
}