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use crate::{
    DecodeError, EncodeError, NestedDecode, NestedDecodeInput, NestedEncode, NestedEncodeOutput,
    TopDecode, TopDecodeInput, TopEncode, TopEncodeOutput,
};
use alloc::boxed::Box;

impl<T: TopEncode> TopEncode for &T {
    #[inline]
    fn top_encode<O: TopEncodeOutput>(&self, output: O) -> Result<(), EncodeError> {
        (*self).top_encode(output)
    }

    #[inline]
    fn top_encode_or_exit<O: TopEncodeOutput, ExitCtx: Clone>(
        &self,
        output: O,
        c: ExitCtx,
        exit: fn(ExitCtx, EncodeError) -> !,
    ) {
        (*self).top_encode_or_exit(output, c, exit);
    }
}

impl<T: TopEncode> TopEncode for Box<T> {
    #[inline]
    fn top_encode<O: TopEncodeOutput>(&self, output: O) -> Result<(), EncodeError> {
        self.as_ref().top_encode(output)
    }

    #[inline]
    fn top_encode_or_exit<O: TopEncodeOutput, ExitCtx: Clone>(
        &self,
        output: O,
        c: ExitCtx,
        exit: fn(ExitCtx, EncodeError) -> !,
    ) {
        self.as_ref().top_encode_or_exit(output, c, exit);
    }
}

impl<T: TopDecode> TopDecode for Box<T> {
    fn top_decode<I: TopDecodeInput>(input: I) -> Result<Self, DecodeError> {
        T::top_decode_boxed(input)
    }

    fn top_decode_or_exit<I: TopDecodeInput, ExitCtx: Clone>(
        input: I,
        c: ExitCtx,
        exit: fn(ExitCtx, DecodeError) -> !,
    ) -> Self {
        T::top_decode_boxed_or_exit(input, c, exit)
    }
}

impl<T: NestedEncode> NestedEncode for &T {
    #[inline]
    fn dep_encode<O: NestedEncodeOutput>(&self, dest: &mut O) -> Result<(), EncodeError> {
        (*self).dep_encode(dest)
    }

    fn dep_encode_or_exit<O: NestedEncodeOutput, ExitCtx: Clone>(
        &self,
        dest: &mut O,
        c: ExitCtx,
        exit: fn(ExitCtx, EncodeError) -> !,
    ) {
        (*self).dep_encode_or_exit(dest, c, exit);
    }
}

impl<T: NestedEncode> NestedEncode for Box<T> {
    #[inline(never)]
    fn dep_encode<O: NestedEncodeOutput>(&self, dest: &mut O) -> Result<(), EncodeError> {
        self.as_ref().dep_encode(dest)
    }

    fn dep_encode_or_exit<O: NestedEncodeOutput, ExitCtx: Clone>(
        &self,
        dest: &mut O,
        c: ExitCtx,
        exit: fn(ExitCtx, EncodeError) -> !,
    ) {
        self.as_ref().dep_encode_or_exit(dest, c, exit);
    }
}

impl<T: NestedDecode> NestedDecode for Box<T> {
    fn dep_decode<I: NestedDecodeInput>(input: &mut I) -> Result<Self, DecodeError> {
        Ok(Box::new(T::dep_decode(input)?))
    }

    fn dep_decode_or_exit<I: NestedDecodeInput, ExitCtx: Clone>(
        input: &mut I,
        c: ExitCtx,
        exit: fn(ExitCtx, DecodeError) -> !,
    ) -> Self {
        Box::new(T::dep_decode_or_exit(input, c, exit))
    }
}