Is your feature request related to a problem or challenge? Please describe what you are trying to do.
For now row group filter in datafusion pass a closure to arrow-rs

fn build_row_group_predicate(
    pruning_predicate: &PruningPredicate,
    metrics: ParquetFileMetrics,
) -> Box<dyn FnMut(&RowGroupMetaData, usize) -> bool> {

https://github.com/apache/arrow-datafusion/blob/585bc3a629b92ea7a86ebfe8bf762dbef4155710/datafusion/core/src/physical_plan/file_format/parquet.rs#L559-L562

So for page filter in datafusion, define filter_predicate

 Box<dyn FnMut(&[pageIndex], &[pageLocation], usize) -> &[bool]>

datafusion will send a mask(&[bool]) to arrow-rs,
then use mask call compute_row_ranges to construct RowRanges : row ranges in a row-group (one col) if col is sorted vec size will be 1.
For multi filter combine:
if there are two filters use and connect，use RowRanges::intersection to get the final rowRange; two filters use or connect，use RowRanges::union to get the final rowRange.

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