2 releases
0.1.1 | Dec 26, 2021 |
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0.1.0 | Dec 26, 2021 |
#2294 in Procedural macros
26 downloads per month
Used in parenthesized_c
9KB
A library providiving OuterAttribute
that implements syn::parse::Parse
trait.
At the time of writing, syn
crate doesn't offer a way to parse outer attributes (for example,
#[repr(C)]
) without declaring a struct and reinventing a wheel by implementing syn::parse::Parse
trait. Unlike syn::Attribute
,
depending on the enabled feature same_layout
or different_layout
the chosen
different_layout::OuterAttribute
or same_layout::OuterAttribute
, respectively, will have
syn::parse::Parse
available.
Example
extern crate syn;
extern crate outer_attribute;
use outer_attribute::different_layout::OuterAttribute;
fn main() {
assert!(matches!(syn::parse_str::<OuterAttribute>("#[repr(C)]"), Ok(_)));
assert!(matches!(syn::parse_str::<OuterAttribute>("Not an outer attribute"), Err(_)));
}
The default feature is different_layout
and opting for same_layout
instead can be considered when
there is some functionality that is available on syn::Attribute
but not on either OuterAttribute
.
License
Licensed under either of Apache License, Version 2.0 or MIT license at your option.Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in this crate by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.
Dependencies
~1.5MB
~36K SLoC