Method extract_fixed_raw

nodedb-strict/src/decode.rs:110–145

Extract raw bytes for a fixed-size column. Returns `None` if null. This is the O(1) fast path: a single bounds check + pointer slice.

(
        &self,
        tuple: &'a [u8],
        col_idx: usize,
    )

    ///
    /// This is the O(1) fast path: a single bounds check + pointer slice.
    pub fn extract_fixed_raw<'a>(
        &self,
        tuple: &'a [u8],
        col_idx: usize,
    ) -> Result<Option<&'a [u8]>, StrictError> {
        self.check_bounds(col_idx)?;
        self.check_min_size(tuple)?;

        if self.is_null_unchecked(tuple, col_idx) {
            return Ok(None);
        }

        let offset = self.fixed_offsets[col_idx].ok_or(StrictError::TypeMismatch {
            column: self.schema.columns[col_idx].name.clone(),
            expected: self.schema.columns[col_idx].column_type,
        })?;

        let size = self.schema.columns[col_idx]
            .column_type
            .fixed_size()
            .ok_or(StrictError::TypeMismatch {
                column: self.schema.columns[col_idx].name.clone(),
                expected: self.schema.columns[col_idx].column_type,
            })?;
        let start = self.header_size + offset;
        let end = start + size;

        if end > tuple.len() {
            return Err(StrictError::TruncatedTuple {
                expected: end,
                got: tuple.len(),
            });
        }

        Ok(Some(&tuple[start..end]))
    }

    /// Extract raw bytes for a variable-length column. Returns `None` if null.
    ///