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
162
163
164
165
166
167
168
169
170
171
172
173
174

use crate::base::EnumArrayHelper;
use crate::base::EnumFlagsHelper;
use crate::flags::EnumFlags;
use crate::map::EnumMap;
use crate::opt_map::EnumOptionMap;
use crate::vec::EnumVec;
use serde::{de, ser};
use std::convert::TryFrom;
use std::fmt;
use std::marker;

struct OptMapSerdeVisitor<T: EnumFlagsHelper + EnumArrayHelper<V>, V, R> {
  marker: marker::PhantomData<fn(EnumOptionMap<T, V>) -> R>,
}

impl<T: EnumFlagsHelper + EnumArrayHelper<V>, V, R>
  OptMapSerdeVisitor<T, V, R>
{
  fn new() -> Self {
    OptMapSerdeVisitor {
      marker: marker::PhantomData,
    }
  }
}

impl<'de, K, V, R> de::Visitor<'de> for OptMapSerdeVisitor<K, V, R>
where
  K: EnumFlagsHelper + EnumArrayHelper<V> + de::Deserialize<'de>,
  V: de::Deserialize<'de>,
  R: TryFrom<EnumOptionMap<K, V>>,
{
  type Value = R;

  fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
    formatter.write_str("Enumoid indexed container")
  }

  fn visit_map<M>(self, mut access: M) -> Result<Self::Value, M::Error>
  where
    M: de::MapAccess<'de>,
  {
    let mut map = EnumOptionMap::new();
    while let Some((key, value)) = access.next_entry::<K, V>()? {
      map.set(key, Some(value));
    }
    match R::try_from(map) {
      Ok(r) => Ok(r),
      Err(_) => Err(de::Error::custom("malformed")),
    }
  }
}

impl<T: EnumArrayHelper<V> + serde::ser::Serialize, V: serde::ser::Serialize>
  serde::ser::Serialize for EnumMap<T, V>
{
  fn serialize<S>(&self, ser: S) -> Result<S::Ok, S::Error>
  where
    S: serde::ser::Serializer,
  {
    use serde::ser::SerializeMap;
    let mut map = ser.serialize_map(Some(T::SIZE))?;
    for (k, v) in self.iter() {
      map.serialize_entry(&k, v)?;
    }
    map.end()
  }
}

impl<
    'de,
    T: EnumFlagsHelper + EnumArrayHelper<V> + de::Deserialize<'de>,
    V: de::Deserialize<'de>,
  > de::Deserialize<'de> for EnumMap<T, V>
{
  fn deserialize<D>(de: D) -> Result<Self, D::Error>
  where
    D: de::Deserializer<'de>,
  {
    de.deserialize_map(OptMapSerdeVisitor::<T, V, EnumMap<T, V>>::new())
  }
}

impl<T: EnumArrayHelper<V> + ser::Serialize, V: ser::Serialize> ser::Serialize
  for EnumVec<T, V>
{
  fn serialize<S>(&self, ser: S) -> Result<S::Ok, S::Error>
  where
    S: ser::Serializer,
  {
    use ser::SerializeMap;
    let mut map = ser.serialize_map(Some(T::uncompact_size(self.len)))?;
    for (k, v) in self.iter() {
      map.serialize_entry(&k, v)?;
    }
    map.end()
  }
}

impl<
    'de,
    T: EnumFlagsHelper + EnumArrayHelper<V> + de::Deserialize<'de>,
    V: de::Deserialize<'de>,
  > de::Deserialize<'de> for EnumVec<T, V>
{
  fn deserialize<D>(de: D) -> Result<Self, D::Error>
  where
    D: de::Deserializer<'de>,
  {
    de.deserialize_map(OptMapSerdeVisitor::<T, V, EnumVec<T, V>>::new())
  }
}

struct FlagsSerdeVisitor<T: EnumFlagsHelper, R> {
  marker: marker::PhantomData<fn(EnumFlags<T>) -> R>,
}

impl<T: EnumFlagsHelper, R> FlagsSerdeVisitor<T, R> {
  fn new() -> Self {
    FlagsSerdeVisitor {
      marker: marker::PhantomData,
    }
  }
}

impl<'de, K, R> de::Visitor<'de> for FlagsSerdeVisitor<K, R>
where
  K: EnumFlagsHelper + de::Deserialize<'de>,
  R: TryFrom<EnumFlags<K>>,
{
  type Value = R;

  fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
    formatter.write_str("Enumoid indexed container")
  }

  fn visit_map<M>(self, mut access: M) -> Result<Self::Value, M::Error>
  where
    M: de::MapAccess<'de>,
  {
    let mut map = EnumFlags::new();
    while let Some((key, value)) = access.next_entry::<K, bool>()? {
      map.set(key, value);
    }
    match R::try_from(map) {
      Ok(r) => Ok(r),
      Err(_) => Err(de::Error::custom("malformed")),
    }
  }
}

impl<T: EnumFlagsHelper + ser::Serialize> ser::Serialize for EnumFlags<T> {
  fn serialize<S>(&self, ser: S) -> Result<S::Ok, S::Error>
  where
    S: ser::Serializer,
  {
    use ser::SerializeMap;
    let mut map = ser.serialize_map(Some(T::SIZE))?;
    for (k, v) in self.iter() {
      map.serialize_entry(&k, &v)?;
    }
    map.end()
  }
}

impl<'de, T: EnumFlagsHelper + de::Deserialize<'de>> de::Deserialize<'de>
  for EnumFlags<T>
{
  fn deserialize<D>(de: D) -> Result<Self, D::Error>
  where
    D: de::Deserializer<'de>,
  {
    de.deserialize_map(FlagsSerdeVisitor::<T, EnumFlags<T>>::new())
  }
}