Method validate_range

crates/wiggle/src/lib.rs:274–298

(&self, offset: u32, len: u32)

    }

    fn validate_range<T>(&self, offset: u32, len: u32) -> Result<Range<usize>, GuestError>
    where
        T: GuestTypeTransparent,
    {
        let byte_len = len
            .checked_mul(T::guest_size())
            .ok_or(GuestError::PtrOverflow)?;
        let region = Region {
            start: offset,
            len: byte_len,
        };
        let offset = usize::try_from(offset)?;
        let byte_len = usize::try_from(byte_len)?;

        let range = offset..offset + byte_len;
        let oob = match self {
            GuestMemory::Unshared(b) => b.get(range.clone()).is_none(),
            GuestMemory::Shared(b) => b.get(range.clone()).is_none(),
        };
        if oob {
            Err(GuestError::PtrOutOfBounds(region))
        } else {
            Ok(range)
        }
    }

    /// Returns whether this is a shared memory or not.
    pub fn is_shared_memory(&self) -> bool {