try_or_wrap_s 0.2.0

`?` or `try!` macro, with an additional wrapping of the error in something else
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# try_or_wrap

[![Crates.io](https://img.shields.io/crates/v/try_or_wrap_s.svg)](https://crates.io/crates/try_or_wrap_s)
[![License](https://img.shields.io/github/license/Ten0/rust-try_or_wrap_s)](LICENSE)

This crate provides a macro similar to the old `try!` macro, or to the `?`, except it wraps
the error in something else.

This is useful if you want to use a `?` for easily returning say, invalid input errors,
but you can't do so because you have an additional `Result` level for handling internal errors of a different nature.

This macro allows you to do so:

```rust
fn foo(input: Input) -> Result<Result<FinalOutput, InvalidInputError>, DatabaseError> {
    let validated_input: ValidatedInput = try_or_wrap!(validate_input_with_database(input)?, Ok);
    Ok(Ok(do_stuff_with_validated_input(validated_input)?))
}

fn validate_input_with_database(input: Input) -> Result<Result<ValidatedInput, InvalidInputError>, DatabaseError>;
```