Function check_decoded_size

nodedb-array/src/codec/limits.rs:45–54

Reject a length value that exceeds `cap`. Used everywhere a `usize` length is decoded from segment bytes.

(value: usize, cap: usize, what: &str)

/// Reject a length value that exceeds `cap`. Used everywhere a `usize`
/// length is decoded from segment bytes.
pub fn check_decoded_size(value: usize, cap: usize, what: &str) -> ArrayResult<()> {
    if value > cap {
        return Err(ArrayError::SegmentCorruption {
            detail: format!(
                "decoded {what} = {value} exceeds hard cap {cap} (segment likely corrupt)"
            ),
        });
    }
    Ok(())
}