stupid-simple-kv 0.1.0

A dead-simple, pluggable, binary-sorted key-value store for Rust with FoundationDB-style keys. In-memory and SQLite backends. Zero-boilerplate and easy iteration.
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

/// Encoding primitives for building binary keys.
pub trait KeyEncoder {
    fn encode_key(&self, out: &mut Vec<u8>);
}

impl KeyEncoder for &str {
    #[inline(always)]
    fn encode_key(&self, out: &mut Vec<u8>) {
        let bytes = self.as_bytes();
        out.push(0x01);
        out.extend_from_slice(&(bytes.len() as u32).to_be_bytes());
        out.extend_from_slice(bytes);
    }
}
impl KeyEncoder for String {
    #[inline(always)]
    fn encode_key(&self, out: &mut Vec<u8>) {
        self.as_str().encode_key(out);
    }
}
impl KeyEncoder for u64 {
    #[inline(always)]
    fn encode_key(&self, out: &mut Vec<u8>) {
        out.push(0x02);
        out.extend_from_slice(&self.to_be_bytes());
    }
}
impl KeyEncoder for i64 {
    #[inline(always)]
    fn encode_key(&self, out: &mut Vec<u8>) {
        out.push(0x03);
        out.extend_from_slice(&self.to_be_bytes());
    }
}

impl KeyEncoder for i8 {
    #[inline(always)]
    fn encode_key(&self, out: &mut Vec<u8>) {
        out.push(0x03);
        out.extend_from_slice(&(i64::from(*self)).to_be_bytes());
    }
}
impl KeyEncoder for i16 {
    #[inline(always)]
    fn encode_key(&self, out: &mut Vec<u8>) {
        out.push(0x03);
        out.extend_from_slice(&(i64::from(*self)).to_be_bytes());
    }
}
impl KeyEncoder for i32 {
    #[inline(always)]
    fn encode_key(&self, out: &mut Vec<u8>) {
        out.push(0x03);
        out.extend_from_slice(&(i64::from(*self)).to_be_bytes());
    }
}
impl KeyEncoder for u8 {
    #[inline(always)]
    fn encode_key(&self, out: &mut Vec<u8>) {
        out.push(0x02);
        out.extend_from_slice(&(u64::from(*self)).to_be_bytes());
    }
}
impl KeyEncoder for u16 {
    #[inline(always)]
    fn encode_key(&self, out: &mut Vec<u8>) {
        out.push(0x02);
        out.extend_from_slice(&(u64::from(*self)).to_be_bytes());
    }
}
impl KeyEncoder for u32 {
    #[inline(always)]
    fn encode_key(&self, out: &mut Vec<u8>) {
        out.push(0x02);
        out.extend_from_slice(&(u64::from(*self)).to_be_bytes());
    }
}
impl KeyEncoder for bool {
    #[inline(always)]
    fn encode_key(&self, out: &mut Vec<u8>) {
        out.push(0x05);
        out.push(if *self { 1 } else { 0 });
    }
}