runestick 0.3.0

The simple stack-based virtual machine.
Documentation 
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use crate::{
    Bytes, FromValue, OwnedMut, OwnedRef, RawOwnedMut, RawOwnedRef, Shared, ToValue,
    UnsafeFromValue, Value, ValueError,
};

value_types!(crate::BYTES_TYPE, Bytes => Bytes, &Bytes, &mut Bytes, &[u8]);

impl ToValue for Bytes {
    fn to_value(self) -> Result<Value, ValueError> {
        Ok(Value::Bytes(Shared::new(self)))
    }
}

impl FromValue for Bytes {
    fn from_value(value: Value) -> Result<Self, ValueError> {
        let bytes = value.into_bytes()?;
        Ok(bytes.borrow_ref()?.clone())
    }
}

impl<'a> UnsafeFromValue for &'a Bytes {
    type Output = *const Bytes;
    type Guard = RawOwnedRef;

    unsafe fn unsafe_from_value(value: Value) -> Result<(Self::Output, Self::Guard), ValueError> {
        let bytes = value.into_bytes()?;
        let bytes = bytes.owned_ref()?;
        Ok(OwnedRef::into_raw(bytes))
    }

    unsafe fn to_arg(output: Self::Output) -> Self {
        &*output
    }
}

impl<'a> UnsafeFromValue for &'a mut Bytes {
    type Output = *mut Bytes;
    type Guard = RawOwnedMut;

    unsafe fn unsafe_from_value(value: Value) -> Result<(Self::Output, Self::Guard), ValueError> {
        let bytes = value.into_bytes()?;
        let bytes = bytes.owned_mut()?;
        Ok(OwnedMut::into_raw(bytes))
    }

    unsafe fn to_arg(output: Self::Output) -> Self {
        &mut *output
    }
}

impl<'a> UnsafeFromValue for &'a [u8] {
    type Output = *const [u8];
    type Guard = RawOwnedRef;

    unsafe fn unsafe_from_value(value: Value) -> Result<(Self::Output, Self::Guard), ValueError> {
        let bytes = value.into_bytes()?;
        let bytes = bytes.owned_ref()?;
        let (value, guard) = OwnedRef::into_raw(bytes);
        Ok(((*value).bytes.as_slice(), guard))
    }

    unsafe fn to_arg(output: Self::Output) -> Self {
        &*output
    }
}