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

use typenum::Unsigned;
use bm::{Error, ValueOf, ReadBackend, WriteBackend};
use core::marker::PhantomData;
use core::ops::{Deref, DerefMut};
use alloc::vec::Vec;
#[cfg(feature = "serde")]
use serde::{Serialize, Deserialize, de::DeserializeOwned};
use crate::{ElementalVariableVecRef, ElementalVariableVec,
            IntoTree, IntoCompactListTree, IntoCompositeListTree,
            FromTree, FromCompactListTree, FromCompositeListTree,
            Compact, CompactRef, CompatibleConstruct};

/// Vec value with maximum length.
#[derive(Debug, Clone, Eq, PartialEq)]
#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
#[cfg_attr(feature = "serde", serde(from = "Vec<T>", into = "Vec<T>"))]
#[cfg_attr(feature = "serde", serde(bound = "T: Clone + Serialize + DeserializeOwned + 'static, ML: Clone"))]
pub struct MaxVec<T, ML>(pub Vec<T>, PhantomData<ML>);

impl<T, ML> Deref for MaxVec<T, ML> {
    type Target = Vec<T>;

    fn deref(&self) -> &Vec<T> {
        &self.0
    }
}

impl<T, ML> DerefMut for MaxVec<T, ML> {
    fn deref_mut(&mut self) -> &mut Vec<T> {
        &mut self.0
    }
}

impl<T, ML> AsRef<[T]> for MaxVec<T, ML> {
    fn as_ref(&self) -> &[T] {
        &self.0
    }
}

impl<T, ML> Default for MaxVec<T, ML> {
    fn default() -> Self {
        Self(Vec::new(), PhantomData)
    }
}

impl<T, ML> From<Vec<T>> for MaxVec<T, ML> {
    fn from(vec: Vec<T>) -> Self {
        Self(vec, PhantomData)
    }
}

impl<T, ML> Into<Vec<T>> for MaxVec<T, ML> {
    fn into(self) -> Vec<T> {
        self.0
    }
}

impl<T, ML: Unsigned> IntoTree for MaxVec<T, ML> where
    for<'b> ElementalVariableVecRef<'b, T>: IntoCompositeListTree,
{
    fn into_tree<DB: WriteBackend>(&self, db: &mut DB) -> Result<ValueOf<DB::Construct>, Error<DB::Error>> where
        DB::Construct: CompatibleConstruct,
    {
        ElementalVariableVecRef(&self.0).into_composite_list_tree(db, Some(ML::to_usize()))
    }
}

impl<T, ML: Unsigned> FromTree for MaxVec<T, ML> where
    for<'a> ElementalVariableVec<T>: FromCompositeListTree,
{
    fn from_tree<DB: ReadBackend>(root: &ValueOf<DB::Construct>, db: &mut DB) -> Result<Self, Error<DB::Error>> where
        DB::Construct: CompatibleConstruct,
    {
        let value = ElementalVariableVec::<T>::from_composite_list_tree(
            root, db, Some(ML::to_usize())
        )?;
        Ok(MaxVec(value.0, PhantomData))
    }
}

impl<'a, T, ML: Unsigned> IntoTree for CompactRef<'a, MaxVec<T, ML>> where
    for<'b> ElementalVariableVecRef<'b, T>: IntoCompactListTree,
{
    fn into_tree<DB: WriteBackend>(&self, db: &mut DB) -> Result<ValueOf<DB::Construct>, Error<DB::Error>> where
        DB::Construct: CompatibleConstruct,
    {
        ElementalVariableVecRef(&self.0).into_compact_list_tree(db, Some(ML::to_usize()))
    }
}

impl<T, ML: Unsigned> IntoTree for Compact<MaxVec<T, ML>> where
    for<'b> ElementalVariableVecRef<'b, T>: IntoCompactListTree,
{
    fn into_tree<DB: WriteBackend>(&self, db: &mut DB) -> Result<ValueOf<DB::Construct>, Error<DB::Error>> where
        DB::Construct: CompatibleConstruct,
    {
        ElementalVariableVecRef(&self.0).into_compact_list_tree(db, Some(ML::to_usize()))
    }
}

impl<T, ML: Unsigned> FromTree for Compact<MaxVec<T, ML>> where
    for<'a> ElementalVariableVec<T>: FromCompactListTree,
{
    fn from_tree<DB: ReadBackend>(root: &ValueOf<DB::Construct>, db: &mut DB) -> Result<Self, Error<DB::Error>> where
        DB::Construct: CompatibleConstruct,
    {
        let value = ElementalVariableVec::<T>::from_compact_list_tree(
            root, db, Some(ML::to_usize())
        )?;
        Ok(Self(MaxVec(value.0, PhantomData)))
    }
}

impl<T> IntoTree for [T] where
    for<'a> ElementalVariableVecRef<'a, T>: IntoCompositeListTree,
{
    fn into_tree<DB: WriteBackend>(&self, db: &mut DB) -> Result<ValueOf<DB::Construct>, Error<DB::Error>> where
        DB::Construct: CompatibleConstruct,
    {
        ElementalVariableVecRef(&self).into_composite_list_tree(db, None)
    }
}

impl<T> IntoTree for Vec<T> where
    for<'a> ElementalVariableVecRef<'a, T>: IntoCompositeListTree,
{
    fn into_tree<DB: WriteBackend>(&self, db: &mut DB) -> Result<ValueOf<DB::Construct>, Error<DB::Error>> where
        DB::Construct: CompatibleConstruct,
    {
        ElementalVariableVecRef(&self).into_composite_list_tree(db, None)
    }
}

impl<T> FromTree for Vec<T> where
    ElementalVariableVec<T>: FromCompositeListTree,
{
    fn from_tree<DB: ReadBackend>(root: &ValueOf<DB::Construct>, db: &mut DB) -> Result<Self, Error<DB::Error>> where
        DB::Construct: CompatibleConstruct,
    {
        ElementalVariableVec::from_composite_list_tree(root, db, None).map(|ret| ret.0)
    }
}