状态管理推导宏

概述

sycamore-state 是一个用于利用 sycamore 的响应式原语进行更好的状态管理的实用库

此crate的主要功能是 State 推导宏和 Rc/Ref 集合信号类型

目前，为了生命周期管理，此crate广泛使用 sycamore::reactive::create_signal_unsafe，如果您认为可能存在不安全的错误，请随时打开一个 issue

当前功能

• 泛型状态支持
• 生命周期支持

计划功能

• 更好的编译错误
• 闭包绑定支持
• 派生状态支持
• 自动上下文提供的宏

使用方法

#[derive(Debug, State, Clone)]
#[state(clone, eq, debug)] // avaliable derive macros are: (clone, debug, eq, ord)
pub struct MyState<'a> {
    pub field_1: String,
    pub field_2: u32,
    #[state]
    pub field_3: MyInnerState<'a>,
    #[state]
    #[collection]
    pub state_collection: Vec<MyInnerState<'a>>
}

#[derive(Debug, State, Clone)]
#[state(clone, eq, debug)]
pub struct MyInnerState<'a> {
    pub field_1: i64,
    #[collection]
    pub collection: Vec<&'a str>
}


let ref_state = RefMyState::new(cx, MyState {
    field_1: "my_string".into(),
    field_2: 5,
    field_3: MyInnerState {
        field_1: 20,
        collection: vec!["my", "string", "collection"],
    },
    state_collection: Default::default()
});  

生成的结构体

pub struct RcMyState<'a> {
    pub field_1: RcSignal<String>,
    pub field_2: RcSignal<u32>,
    pub field_3: RcSignal<RcMyInnerState<'a>>,
    pub state_collection: RcCollectionSignal<RcMyInnerState<'a>>,
}

pub struct RcMyInnerState<'a> {
    pub field_1: RcSignal<i64>,
    pub collection: RcCollectionSignal<&'a str>,
}

pub struct RefMyState<'a, 'stateful> {
    pub field_1: &'stateful Signal<String>,
    pub field_2: &'stateful Signal<u32>,
    pub field_3: &'stateful Signal<RefMyInnerState<'a, 'stateful>>,
    pub state_collection: RefCollectionSignal<'stateful, RefMyInnerState<'a, 'stateful>>,
}

pub struct RefMyInnerState<'a, 'stateful> {
    pub field_1: &'stateful Signal<i64>,
    pub collection: RefCollectionSignal<'stateful, &'a str>,
}