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#![cfg(feature = "iterator")] | ||
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use cosmwasm_std::Addr; | ||
use std::marker::PhantomData; | ||
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use crate::de::KeyDeserialize; | ||
use crate::{Prefixer, PrimaryKey}; | ||
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/// `RawBound` is used to define the two ends of a range, more explicit than `Option<u8>`. | ||
/// `None` means that we don't limit that side of the range at all. | ||
/// `Inclusive` means we use the given bytes as a limit and *include* anything at that exact key. | ||
/// `Exclusive` means we use the given bytes as a limit and *exclude* anything at that exact key. | ||
/// See `Bound` for a type safe way to build these bounds. | ||
#[derive(Clone, Debug)] | ||
pub enum RawBound { | ||
Inclusive(Vec<u8>), | ||
Exclusive(Vec<u8>), | ||
} | ||
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/// `Bound` is used to define the two ends of a range. | ||
/// `None` means that we don't limit that side of the range at all. | ||
/// `Inclusive` means we use the given value as a limit and *include* anything at that exact key. | ||
/// `Exclusive` means we use the given value as a limit and *exclude* anything at that exact key. | ||
#[derive(Clone, Debug)] | ||
pub enum Bound<'a, K: PrimaryKey<'a>> { | ||
Inclusive((K, PhantomData<&'a bool>)), | ||
Exclusive((K, PhantomData<&'a bool>)), | ||
InclusiveRaw(Vec<u8>), | ||
ExclusiveRaw(Vec<u8>), | ||
} | ||
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impl<'a, K: PrimaryKey<'a>> Bound<'a, K> { | ||
pub fn inclusive<T: Into<K>>(k: T) -> Self { | ||
Self::Inclusive((k.into(), PhantomData)) | ||
} | ||
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pub fn exclusive<T: Into<K>>(k: T) -> Self { | ||
Self::Exclusive((k.into(), PhantomData)) | ||
} | ||
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pub fn to_raw_bound(&self) -> RawBound { | ||
match self { | ||
Bound::Inclusive((k, _)) => RawBound::Inclusive(k.joined_key()), | ||
Bound::Exclusive((k, _)) => RawBound::Exclusive(k.joined_key()), | ||
Bound::ExclusiveRaw(raw_k) => RawBound::Exclusive(raw_k.clone()), | ||
Bound::InclusiveRaw(raw_k) => RawBound::Inclusive(raw_k.clone()), | ||
} | ||
} | ||
} | ||
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#[derive(Clone, Debug)] | ||
pub enum PrefixBound<'a, K: Prefixer<'a>> { | ||
Inclusive((K, PhantomData<&'a bool>)), | ||
Exclusive((K, PhantomData<&'a bool>)), | ||
} | ||
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impl<'a, K: Prefixer<'a>> PrefixBound<'a, K> { | ||
pub fn inclusive<T: Into<K>>(k: T) -> Self { | ||
Self::Inclusive((k.into(), PhantomData)) | ||
} | ||
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pub fn exclusive<T: Into<K>>(k: T) -> Self { | ||
Self::Exclusive((k.into(), PhantomData)) | ||
} | ||
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pub fn to_raw_bound(&self) -> RawBound { | ||
match self { | ||
PrefixBound::Exclusive((k, _)) => RawBound::Exclusive(k.joined_prefix()), | ||
PrefixBound::Inclusive((k, _)) => RawBound::Inclusive(k.joined_prefix()), | ||
} | ||
} | ||
} | ||
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pub trait Bounder<'a>: PrimaryKey<'a> + Sized { | ||
fn inclusive_bound(self) -> Option<Bound<'a, Self>>; | ||
fn exclusive_bound(self) -> Option<Bound<'a, Self>>; | ||
} | ||
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impl<'a> Bounder<'a> for () { | ||
fn inclusive_bound(self) -> Option<Bound<'a, Self>> { | ||
None | ||
} | ||
fn exclusive_bound(self) -> Option<Bound<'a, Self>> { | ||
None | ||
} | ||
} | ||
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impl<'a> Bounder<'a> for &'a [u8] { | ||
fn inclusive_bound(self) -> Option<Bound<'a, Self>> { | ||
Some(Bound::inclusive(self)) | ||
} | ||
fn exclusive_bound(self) -> Option<Bound<'a, Self>> { | ||
Some(Bound::exclusive(self)) | ||
} | ||
} | ||
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impl< | ||
'a, | ||
T: PrimaryKey<'a> + KeyDeserialize + Prefixer<'a> + Clone, | ||
U: PrimaryKey<'a> + KeyDeserialize + Clone, | ||
> Bounder<'a> for (T, U) | ||
{ | ||
fn inclusive_bound(self) -> Option<Bound<'a, Self>> { | ||
Some(Bound::inclusive(self)) | ||
} | ||
fn exclusive_bound(self) -> Option<Bound<'a, Self>> { | ||
Some(Bound::exclusive(self)) | ||
} | ||
} | ||
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impl< | ||
'a, | ||
T: PrimaryKey<'a> + Prefixer<'a> + Clone, | ||
U: PrimaryKey<'a> + Prefixer<'a> + KeyDeserialize + Clone, | ||
V: PrimaryKey<'a> + KeyDeserialize + Clone, | ||
> Bounder<'a> for (T, U, V) | ||
{ | ||
fn inclusive_bound(self) -> Option<Bound<'a, Self>> { | ||
Some(Bound::inclusive(self)) | ||
} | ||
fn exclusive_bound(self) -> Option<Bound<'a, Self>> { | ||
Some(Bound::exclusive(self)) | ||
} | ||
} | ||
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impl<'a> Bounder<'a> for &'a str { | ||
fn inclusive_bound(self) -> Option<Bound<'a, Self>> { | ||
Some(Bound::inclusive(self)) | ||
} | ||
fn exclusive_bound(self) -> Option<Bound<'a, Self>> { | ||
Some(Bound::exclusive(self)) | ||
} | ||
} | ||
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impl<'a> Bounder<'a> for String { | ||
fn inclusive_bound(self) -> Option<Bound<'a, Self>> { | ||
Some(Bound::inclusive(self)) | ||
} | ||
fn exclusive_bound(self) -> Option<Bound<'a, Self>> { | ||
Some(Bound::exclusive(self)) | ||
} | ||
} | ||
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impl<'a> Bounder<'a> for Vec<u8> { | ||
fn inclusive_bound(self) -> Option<Bound<'a, Self>> { | ||
Some(Bound::inclusive(self)) | ||
} | ||
fn exclusive_bound(self) -> Option<Bound<'a, Self>> { | ||
Some(Bound::exclusive(self)) | ||
} | ||
} | ||
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impl<'a> Bounder<'a> for &'a Addr { | ||
fn inclusive_bound(self) -> Option<Bound<'a, Self>> { | ||
Some(Bound::inclusive(self)) | ||
} | ||
fn exclusive_bound(self) -> Option<Bound<'a, Self>> { | ||
Some(Bound::exclusive(self)) | ||
} | ||
} | ||
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impl<'a> Bounder<'a> for Addr { | ||
fn inclusive_bound(self) -> Option<Bound<'a, Self>> { | ||
Some(Bound::inclusive(self)) | ||
} | ||
fn exclusive_bound(self) -> Option<Bound<'a, Self>> { | ||
Some(Bound::exclusive(self)) | ||
} | ||
} | ||
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macro_rules! integer_bound { | ||
(for $($t:ty),+) => { | ||
$(impl<'a> Bounder<'a> for $t { | ||
fn inclusive_bound(self) -> Option<Bound<'a, Self>> { | ||
Some(Bound::inclusive(self)) | ||
} | ||
fn exclusive_bound(self) -> Option<Bound<'a, Self>> { | ||
Some(Bound::exclusive(self)) | ||
} | ||
})* | ||
} | ||
} | ||
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integer_bound!(for i8, u8, i16, u16, i32, u32, i64, u64); |
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