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use std::marker::PhantomData;
use crate::query::CustomQuery;
use crate::results::Empty;
use crate::traits::{Api, Querier, Storage};
use crate::QuerierWrapper;
pub struct OwnedDeps<S: Storage, A: Api, Q: Querier, C: CustomQuery = Empty> {
pub storage: S,
pub api: A,
pub querier: Q,
pub custom_query_type: PhantomData<C>,
}
pub struct DepsMut<'a, C: CustomQuery = Empty> {
pub storage: &'a mut dyn Storage,
pub api: &'a dyn Api,
pub querier: QuerierWrapper<'a, C>,
}
#[derive(Clone)]
pub struct Deps<'a, C: CustomQuery = Empty> {
pub storage: &'a dyn Storage,
pub api: &'a dyn Api,
pub querier: QuerierWrapper<'a, C>,
}
impl<'a, C: CustomQuery> Copy for Deps<'a, C> {}
impl<S: Storage, A: Api, Q: Querier, C: CustomQuery> OwnedDeps<S, A, Q, C> {
pub fn as_ref(&'_ self) -> Deps<'_, C> {
Deps {
storage: &self.storage,
api: &self.api,
querier: QuerierWrapper::new(&self.querier),
}
}
pub fn as_mut(&'_ mut self) -> DepsMut<'_, C> {
DepsMut {
storage: &mut self.storage,
api: &self.api,
querier: QuerierWrapper::new(&self.querier),
}
}
}
impl<'a, C: CustomQuery> DepsMut<'a, C> {
pub fn as_ref(&'_ self) -> Deps<'_, C> {
Deps {
storage: self.storage,
api: self.api,
querier: self.querier,
}
}
pub fn branch(&'_ mut self) -> DepsMut<'_, C> {
DepsMut {
storage: self.storage,
api: self.api,
querier: self.querier,
}
}
}
#[cfg(test)]
mod tests {
use super::*;
use crate::testing::{mock_dependencies, MockApi, MockQuerier, MockStorage};
use serde::{Deserialize, Serialize};
fn execute(mut deps: DepsMut) {
execute2(deps.branch());
query(deps.as_ref());
execute2(deps.branch());
}
fn execute2(_deps: DepsMut) {}
fn query(deps: Deps) {
query2(deps);
query2(deps);
}
fn query2(_deps: Deps) {}
#[test]
fn ensure_easy_reuse() {
let mut deps = mock_dependencies();
execute(deps.as_mut());
query(deps.as_ref())
}
#[test]
fn deps_implements_copy() {
impl CustomQuery for u64 {}
#[derive(Clone, Serialize, Deserialize)]
struct MyQuery;
impl CustomQuery for MyQuery {}
let owned = OwnedDeps::<_, _, _, u64> {
storage: MockStorage::default(),
api: MockApi::default(),
querier: MockQuerier::<u64>::new(&[]),
custom_query_type: PhantomData,
};
let deps: Deps<u64> = owned.as_ref();
let _copy1 = deps;
let _copy2 = deps;
let owned = OwnedDeps::<_, _, _, MyQuery> {
storage: MockStorage::default(),
api: MockApi::default(),
querier: MockQuerier::<MyQuery>::new(&[]),
custom_query_type: PhantomData,
};
let deps: Deps<MyQuery> = owned.as_ref();
let _copy1 = deps;
let _copy2 = deps;
}
}