dmitryb-dev / waiter Goto Github PK

Dependency injection, Inversion of control container for rust with compile time binding.

Rust 100.00%

container dependency-injection di inversion-of-control ioc rust

waiter's Issues

cargo build: waiter_codegen v1.6.4: could not find `export` in `syn`

I get this error when building my project, where I try to add waiter_ci in Cargo.toml:

   Compiling waiter_codegen v1.6.4
error[E0432]: unresolved import `syn::export`
 --> /home/yves/.cargo/registry/src/github.com-1ecc6299db9ec823/waiter_codegen-1.6.4/src/lib.rs:7:10
  |
7 | use syn::export::{TokenStream2, ToTokens};
  |          ^^^^^^ could not find `export` in `syn`

[× many times…]

error: cannot determine resolution for the macro `quote::quote`
  --> /home/yves/.cargo/registry/src/github.com-1ecc6299db9ec823/waiter_codegen-1.6.4/src/component/mod.rs:80:18
   |
80 |     let result = quote::quote! {
   |                  ^^^^^^^^^^^^
   |
   = note: import resolution is stuck, try simplifying macro imports

[× many times…]

Support async factory functions

I'm testing the following async factory function:

struct Dependency {
    msg: &'static str
}

impl Dependency {
    async fn dep(&self) {
        println!("Dep {}", self.msg);
    }
}

#[provides]
async fn create_dependency() -> Dependency {
    async {
        println!("dep factory");
    }.await;
    Dependency { msg: "Hello, World!" }
}

#[async_std::main]
async fn main() {
    let mut container = Container::<profiles::Default>::new();

    let comp = Provider::<Dependency>::get_ref(&mut container);
    comp.dep().await;
}

I get the following compiling error:

cargo run --color=always --package async_example --bin async_example
   Compiling async_example v0.0.1 (/home/steve/workspaces/forks/waiter/crates/async_example)
error[E0308]: mismatched types
  --> crates/async_example/src/main.rs:30:1
   |
30 | #[provides]
   | ^^^^^^^^^^^
   | |
   | expected struct `Dependency`, found opaque type
   | expected `Dependency` because of return type
31 | async fn create_dependency() -> Dependency {
   |                                 ---------- the `Output` of this `async fn`'s found opaque type
   |
   = note:   expected struct `Dependency`
           found opaque type `impl Future`
   = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)

error: aborting due to previous error

For more information about this error, try `rustc --explain E0308`.
error: could not compile `async_example`

Support traits defined in crate

I extended the 3_inject_options_list.rs example to implement Interface4 from crate test_def.

use test_def::Interface4;

#[provides]
impl Interface4 for Comp {
    fn int4(&self) {
        println!("Interface 4");
    }
}

I get the following compiling error:

cargo run --color=always --package waiter_di --example 3_inject_options_list
   Compiling waiter_di v1.6.4 (/home/steve/workspaces/playground/rust/waiter)
error[E0117]: only traits defined in the current crate can be implemented for arbitrary types
   --> examples/3_inject_options_list.rs:116:1
    |
116 | #[provides]
    | ^^^^^^^^^^^
    | |
    | impl doesn't use only types from inside the current crate
    | `waiter_di::Container` is not defined in the current crate
    | `dyn Interface4` is not defined in the current crate
    |
    = note: define and implement a trait or new type instead
    = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)

error: aborting due to previous error

For more information about this error, try `rustc --explain E0117`.
error: could not compile `waiter_di`

`#[component]` cannot handle empty struct types

this works:

#[component]
struct SpecificDuck {}

this does not work:

#[component]
struct SpecificDuck;

the error is:

error[E0618]: expected function, found struct `SpecificDuck`
  --> examples/01-waiter-di.rs:11:8
   |
10 | #[component]
   | ------------ call expression requires function
11 | struct SpecificDuck;
   | -------^^^^^^^^^^^^
   | |
   | struct `SpecificDuck` defined here
   |
help: `SpecificDuck` is a unit struct, and does not take parentheses to be constructed
   |
10 - #[component]
10 + #[component]

dmitryb-dev / waiter Goto Github PK

waiter's Issues

cargo build: waiter_codegen v1.6.4: could not find `export` in `syn`

Support async factory functions

Support traits defined in crate

`#[component]` cannot handle empty struct types

Recommend Projects

React

Vue.js

Typescript

TensorFlow

Django

Laravel

D3

Recommend Topics

javascript

web

server

Machine learning

Visualization

Game

Recommend Org

Facebook

Microsoft

Google

Alibaba

D3

Tencent