dmitryb-dev / waiter Goto Github PK

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

Rust 100.00%

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

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khooj inexorgame-obsolete unshakable-horse mcsafety daheige vnaki hapejot ltouati

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 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`

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`

`#[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 People

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waiter's Issues

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

Support traits defined in crate

Support async factory functions

`#[component]` cannot handle empty struct types

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