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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,184 @@ | ||
| #![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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