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extern crate prototty_monolithic_storage;
extern crate serde;
extern crate wasm_bindgen;
use serde::de::DeserializeOwned;
use serde::ser::Serialize;
pub use prototty_monolithic_storage::{LoadError, Storage, StoreError};
use prototty_monolithic_storage::{MonoStorage, StoreBytes};
use wasm_bindgen::prelude::*;
#[wasm_bindgen]
extern "C" {
pub type JsByteStorage;
#[wasm_bindgen(method)]
fn js_load(this: &JsByteStorage) -> Vec<u8>;
#[wasm_bindgen(method)]
fn js_store(this: &JsByteStorage, data: &[u8]);
}
impl StoreBytes for JsByteStorage {
fn store(&mut self, bytes: &[u8]) {
self.js_store(bytes);
}
}
pub struct WasmStorage(MonoStorage<JsByteStorage>);
impl WasmStorage {
pub fn new(js_byte_storage: JsByteStorage) -> Self {
let existing_data = js_byte_storage.js_load();
WasmStorage(MonoStorage::from_bytes_or_empty(
&existing_data,
js_byte_storage,
))
}
}
impl Storage for WasmStorage {
fn load_raw<K>(&self, key: K) -> Result<Vec<u8>, LoadError>
where
K: AsRef<str>,
{
self.0.load_raw(key)
}
fn store_raw<K, V>(&mut self, key: K, value: V) -> Result<(), StoreError>
where
K: AsRef<str>,
V: AsRef<[u8]>,
{
self.0.store_raw(key, value)
}
fn remove_raw<K>(&mut self, key: K) -> Result<Vec<u8>, LoadError>
where
K: AsRef<str>,
{
self.0.remove_raw(key)
}
fn exists<K>(&self, key: K) -> bool
where
K: AsRef<str>,
{
self.0.exists(key)
}
fn clear(&mut self) {
self.0.clear();
}
fn load<K, T>(&self, key: K) -> Result<T, LoadError>
where
K: AsRef<str>,
T: DeserializeOwned,
{
self.0.load(key)
}
fn store<K, T>(&mut self, key: K, value: &T) -> Result<(), StoreError>
where
K: AsRef<str>,
T: Serialize,
{
self.0.store(key, value)
}
fn remove<K, T>(&mut self, key: K) -> Result<T, LoadError>
where
K: AsRef<str>,
T: DeserializeOwned,
{
self.0.remove(key)
}
}