fastly 0.6.0-beta1

Fastly Compute@Edge API
Documentation 
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macro_rules! convert_stringy {
    ( $type:path, $trait:ident, $sealed:ident, $fail_msg:literal $(, $extra_bound:path )* ) => {
        #[allow(unused)]
        use std::str::FromStr;

        impl Borrowable<$type> for $type {
            fn as_ref(&self) -> &$type {
                self
            }
        }

        impl Borrowable<$type> for &$type {
            fn as_ref(&self) -> &$type {
                &*self
            }
        }

        impl $trait for $type {}
        impl<'a> $trait for &'a $type {}
        impl $trait for &str {}
        impl $trait for String {}
        impl $trait for &String {}

        pub trait $sealed {
            type Borrowable: Borrowable<$type> $(+ $extra_bound )*;

            fn into_borrowable(self) -> Self::Borrowable;
            fn into_owned(self) -> $type;
        }

        impl $sealed for $type {
            type Borrowable = $type;

            fn into_borrowable(self) -> Self::Borrowable {
                self
            }

            fn into_owned(self) -> $type {
                self
            }
        }

        impl<'a> $sealed for &'a $type {
            type Borrowable = &'a $type;

            fn into_borrowable(self) -> Self::Borrowable {
                self
            }

            fn into_owned(self) -> $type {
                self.clone()
            }
        }

        impl $sealed for &str {
            type Borrowable = $type;

            fn into_borrowable(self) -> Self::Borrowable {
                <$type>::from_str(self).unwrap_or_else(|_| panic!(concat!($fail_msg, ": {}"), self))
            }

            fn into_owned(self) -> $type {
                $sealed::into_borrowable(self)
            }
        }

        impl $sealed for String {
            type Borrowable = $type;

            fn into_borrowable(self) -> Self::Borrowable {
                $sealed::into_borrowable(self.as_str())
            }

            fn into_owned(self) -> $type {
                $sealed::into_owned(self.as_str())
            }
        }

        impl $sealed for &String {
            type Borrowable = $type;

            fn into_borrowable(self) -> Self::Borrowable {
                $sealed::into_borrowable(self.as_str())
            }

            fn into_owned(self) -> $type {
                $sealed::into_owned(self.as_str())
            }
        }
    };
    ( @with_byte_impls, $type:path, $trait:ident, $sealed:ident, $fail_msg:literal $(, $extra_bound:path )* ) => {
        convert_stringy!($type, $trait, $sealed, $fail_msg $(, $extra_bound )*);

        impl $trait for &[u8] {}
        impl $trait for Vec<u8> {}
        impl $trait for &Vec<u8> {}

        impl $sealed for &[u8] {
            type Borrowable = $type;

            fn into_borrowable(self) -> Self::Borrowable {
                <$type>::try_from(self).unwrap_or_else(|_| panic!(concat!($fail_msg, ": {:?}"), self))
            }

            fn into_owned(self) -> $type {
                $sealed::into_borrowable(self)
            }
        }

        impl $sealed for Vec<u8> {
            type Borrowable = $type;

            fn into_borrowable(self) -> Self::Borrowable {
                $sealed::into_borrowable(self.as_slice())
            }

            fn into_owned(self) -> $type {
                $sealed::into_owned(self.as_slice())
            }
        }

        impl $sealed for &Vec<u8> {
            type Borrowable = $type;

            fn into_borrowable(self) -> Self::Borrowable {
                $sealed::into_borrowable(self.as_slice())
            }

            fn into_owned(self) -> $type {
                $sealed::into_owned(self.as_slice())
            }
        }
    };
}