musli-core 0.1.4

Core traits and types for the Müsli serialization framework.
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

//! Implementations for variously lengthed tuples.

use crate::Allocator;
use crate::de::{Decode, DecodePacked, Decoder, SequenceDecoder};
use crate::en::{Encode, EncodePacked, Encoder, SequenceEncoder};

macro_rules! count {
    (_) => { 1 };
    (_ _) => { 2 };
    (_ _ _) => { 3 };
    (_ _ _ _) => { 4 };
    (_ _ _ _ _) => { 5 };
    (_ _ _ _ _ _) => { 6 };
    (_ _ _ _ _ _ _) => { 7 };
    (_ _ _ _ _ _ _ _) => { 8 };
    (_ _ _ _ _ _ _ _ _) => { 9 };
    (_ _ _ _ _ _ _ _ _ _) => { 10 };
    (_ _ _ _ _ _ _ _ _ _ _) => { 11 };
    (_ _ _ _ _ _ _ _ _ _ _ _) => { 12 };
    (_ _ _ _ _ _ _ _ _ _ _ _ _) => { 13 };
    (_ _ _ _ _ _ _ _ _ _ _ _ _ _) => { 14 };
    (_ _ _ _ _ _ _ _ _ _ _ _ _ _ _) => { 15 };
    (_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _) => { 16 };

    (( $($s:tt)* ) $_:ident $($tail:tt)*) => {
        count!(( $($s)* _ ) $($tail)*)
    };

    (( $($s:tt)* )) => {
        count!( $($s)* )
    };

    ($($ident:ident)*) => {
        count!(() $($ident)*)
    };
}

macro_rules! declare {
    () => {
    };

    (($ty0:ident, $ident0:ident) $(, ($ty:ident, $ident:ident))* $(,)?) => {
        impl<M, $ty0 $(, $ty)*> Encode<M> for ($ty0, $($ty),*)
        where
            $ty0: Encode<M>,
            $($ty: Encode<M>),*
        {
            // It is harder to check that a tuple is packed, because we have to
            // ensure it doesn't contain any padding.
            const IS_BITWISE_ENCODE: bool = false;

            #[inline]
            fn encode<E>(&self, encoder: E) -> Result<(), E::Error>
            where
                E: Encoder<Mode = M>,
            {
                encoder.encode_sequence_fn(count!($ident0 $($ident)*), |tuple| {
                    let ($ident0, $($ident),*) = self;
                    tuple.encode_next()?.encode($ident0)?;
                    $(tuple.encode_next()?.encode($ident)?;)*
                    Ok(())
                })
            }

            type Encode = Self;

            #[inline]
            fn as_encode(&self) -> &Self::Encode {
                self
            }
        }

        impl<'de, M, A, $ty0, $($ty,)*> Decode<'de, M, A> for ($ty0, $($ty),*)
        where
            A: Allocator,
            $ty0: Decode<'de, M, A>,
            $($ty: Decode<'de, M, A>),*
        {
            // It is harder to check that a tuple is packed, because we have to
            // ensure it doesn't contain any padding.
            const IS_BITWISE_DECODE: bool = false;

            #[inline]
            fn decode<D>(decoder: D) -> Result<Self, D::Error>
            where
                D: Decoder<'de, Mode = M, Allocator = A>,
            {
                decoder.decode_sequence_hint(count!($ident0 $($ident)*), |tuple| {
                    let $ident0 = tuple.next()?;
                    $(let $ident = tuple.next()?;)*
                    Ok(($ident0, $($ident),*))
                })
            }
        }

        impl<M, $ty0 $(,$ty)*> EncodePacked<M> for ($ty0, $($ty),*)
        where
            $ty0: Encode<M>,
            $($ty: Encode<M>),*
        {
            #[inline]
            fn encode_packed<E>(&self, encoder: E) -> Result<(), E::Error>
            where
                E: Encoder<Mode = M>,
            {
                let ($ident0, $($ident),*) = self;
                encoder.encode_pack_fn(|pack| {
                    pack.encode_next()?.encode($ident0)?;
                    $(pack.encode_next()?.encode($ident)?;)*
                    Ok(())
                })
            }
        }

        impl<'de, M, A, $ty0, $($ty,)*> DecodePacked<'de, M, A> for ($ty0, $($ty),*)
        where
            A: Allocator,
            $ty0: Decode<'de, M, A>,
            $($ty: Decode<'de, M, A>),*
        {
            #[inline]
            fn decode_packed<D>(decoder: D) -> Result<Self, D::Error>
            where
                D: Decoder<'de, Mode = M, Allocator = A>,
            {
                decoder.decode_pack(|pack| {
                    let $ident0 = pack.next()?;
                    $(let $ident = pack.next()?;)*
                    Ok(($ident0, $($ident),*))
                })
            }
        }

        declare!($(($ty, $ident)),*);
    };
}

declare! {
    (T0, t0),
    (T1, t1),
    (T2, t2),
    (T3, t3),
    (T4, t4),
    (T5, t5),
    (T6, t6),
    (T7, t7),
    (T8, t8),
    (T9, t9),
    (T10, t10),
    (T11, t11),
    (T12, t12),
    (T13, t13),
    (T14, t14),
    (T15, t15),
}