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/*!
Attribute macro for less verbose creation of enums having different types as variants.
Also automatically implements `From`, `TryFrom` and `fn is<T>() -> bool` to check if its inner item is of type `T` and is able to give you trait objects depending on which arguments you specify.
## Basic Usage:
```rust
use tyenum::tyenum;
struct A;
struct B;
struct C;
#[tyenum]
enum Test {
A,
BB(B),
C(C),
}
```
results in:
```rust
enum Test {
A(A),
BB(B),
C(C),
}
```
and allows for:
```rust
assert_eq!(Test::A(A), A.into());
assert!(Test::A(A).is::<A>());
assert_eq!(Test::A(A).try_into(), Ok(A));
```
## Arguments
`tyenum` also takes 2 optional arguments:
### derive
```rust
#[tyenum(derive=[Display])]
enum Test {
A,
BB(B),
}
trait Name {
fn name(&self) -> String;
}
impl Name for A {
fn name(&self) -> String {
String::from("A")
}
}
impl Name for B {
fn name(&self) -> String {
String::from("B")
}
}
```
This implements `std::ops::Deref` and `std::ops::DerefMut` to a trait object of the derived trait for the enum, which allows you to easily call trait methods, which will be redirected to the variant:
```rust
assert_eq!("A", Test::A(A).name());
```
### trait_obj
**Requires nightly and #![feature(specialization)] and pollutes your namespace, a trait named "<YourEnumIdent>ToTraitObject" will be generated!**
```rust
#[tyenum(trait_obj=[Name])]
enum Test {
A,
BB(B),
}
trait Name {
fn name(&self) -> String;
}
impl Name for A {
fn name(&self) -> String {
String::from("A")
}
}
```
allows you to do this:
```rust
fn try_print_name(test: Test) {
if let Some(named) = test.trait_obj() {
println!("{}",named.name());
}
}
```
!*/
pub use tyenum;
;