tora 0.1.1

A lite, byte-based serialization and deserialization library.
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

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

/// An extension to the standard [Write] trait.
pub trait ToraWrite {
    /// Serialize and write the given data.
    fn writes<S>(&mut self, s: &S) -> io::Result<()>
    where
        S: SerializeIo;

    /// Write a dynamic amount of objects.
    ///
    /// Opposite of [ToraRead::read_dyn](crate::read::ToraRead::read_dyn).
    fn write_dyn<T, D>(&mut self, d: D) -> io::Result<()>
    where
        D: AsRef<[T]>,
        T: SerializeIo;
}

impl<W> ToraWrite for W
where
    W: Write,
{
    fn writes<S>(&mut self, s: &S) -> io::Result<()>
    where
        S: SerializeIo,
    {
        s.serialize(self)
    }

    fn write_dyn<T, D>(&mut self, d: D) -> io::Result<()>
    where
        D: AsRef<[T]>,
        T: SerializeIo,
    {
        let d = d.as_ref();
        self.writes(&(d.len() as u32))?;

        for obj in d {
            self.writes(obj)?;
        }
        Ok(())
    }
}

/// A trait marking a type as capable of serializing itself to a writer.
///
/// ```
/// use std::io;
/// use std::io::Write;
///
/// pub trait SerializeIo {
///     fn serialize<W>(&self, w: &mut W) -> io::Result<()>
///     where
///         W: Write;
/// }
///
/// impl SerializeIo for i32 {
///     fn serialize<W>(&self, w: &mut W) -> io::Result<()>
///     where W: Write
///     {
///         w.write_all(&self.to_le_bytes())
///     }
/// }
/// ```
pub trait SerializeIo {
    /// Serialize this type into the given writer.
    ///
    /// Should call `write_all`.
    fn serialize<W>(&self, w: &mut W) -> io::Result<()>
    where
        W: Write;
}

macro_rules! serialize_io_num {
    ($($t:ty),*) => {
        $(
        impl SerializeIo for $t {
            fn serialize<W>(&self, w: &mut W) -> io::Result<()>
            where W: Write
            {
                w.write_all(&self.to_le_bytes())
            }
        })*
    }
}

serialize_io_num!(u8, u16, u32, u64, u128, i8, i16, i32, i64, i128, f32, f64, usize);

impl SerializeIo for char {
    fn serialize<W>(&self, w: &mut W) -> io::Result<()>
    where
        W: Write,
    {
        (*self as u32).serialize(w)
    }
}

impl SerializeIo for bool {
    fn serialize<W>(&self, w: &mut W) -> io::Result<()>
    where
        W: Write,
    {
        (*self as u8).serialize(w)
    }
}

impl SerializeIo for String {
    fn serialize<W>(&self, w: &mut W) -> io::Result<()>
    where
        W: Write,
    {
        self.as_str().serialize(w)
    }
}

impl<'a> SerializeIo for &'a str {
    /// Write the given string in UTF-8.
    ///
    /// If the given string does not end in a NUL `0x00` byte, one will be appended.
    fn serialize<W>(&self, w: &mut W) -> io::Result<()>
    where
        W: Write,
    {
        w.write_all(self.as_bytes())?;

        if !self.ends_with(0u8 as char) {
            w.write_all(&[0])?;
        }
        Ok(())
    }
}

impl<T> SerializeIo for &[T]
where
    T: SerializeIo,
{
    /// Equivalent to [ToraWrite::write_dyn].
    fn serialize<W>(&self, w: &mut W) -> io::Result<()>
    where
        W: Write,
    {
        w.write_dyn(self)
    }
}