//! [`FsMistrustErrorExt`]

use extend::ext;

use paste::paste;

use tor_error::ErrorKind;

use ErrorKind as EK;

/// Helper; `access_failed` should be `FooAccessFaile` for the appropriate `Foo`

    } else {

    }

/// Generate the extension trait and its impl

///

/// Input is the set of "kinds of thing", each of which corresponds to an `ErrorKind`.

///

/// # Input syntax

///

/// ```text

///     thing, "DESCRIPTION";           // Provide thing_error_kind(), using ThingAccessFailed

///     [Prefix] THING, "DESCRIPTION";  // uses PrefixThingAccessFAiled

/// ```

macro_rules! accesses { {

    $( $([ $prefix:ident ])? $kind:ident, $description:tt; )*

} => { paste!{

    /// Extension trait for getting a [`tor_error::ErrorKind`] from a [`fs_mistrust::Error`]

    #[ext(name = FsMistrustErrorExt, supertraits = Sealed)]

    pub impl fs_mistrust::Error {

        $(

            #[doc = concat!("The error kind if we were trying to access", $description)]

        )*

    }

} } }

/// Sealed

pub trait Sealed {}

impl Sealed for fs_mistrust::Error {}

accesses! {

    cache, "a cache directory";

    [Persistent] state, "a persistent state directory";

    keystore, "a keystore";

}