vortex-array 0.21.1

Vortex in memory columnar data format
Documentation 
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mod boolean;
mod compare;
mod invert;
mod search_sorted;

use vortex_error::VortexResult;
use vortex_scalar::Scalar;

use crate::array::constant::ConstantArray;
use crate::array::ConstantEncoding;
use crate::compute::{
    BinaryBooleanFn, CompareFn, ComputeVTable, FilterFn, FilterMask, InvertFn, ScalarAtFn,
    SearchSortedFn, SliceFn, TakeFn,
};
use crate::{ArrayData, IntoArrayData};

impl ComputeVTable for ConstantEncoding {
    fn binary_boolean_fn(&self) -> Option<&dyn BinaryBooleanFn<ArrayData>> {
        Some(self)
    }

    fn compare_fn(&self) -> Option<&dyn CompareFn<ArrayData>> {
        Some(self)
    }

    fn filter_fn(&self) -> Option<&dyn FilterFn<ArrayData>> {
        Some(self)
    }

    fn invert_fn(&self) -> Option<&dyn InvertFn<ArrayData>> {
        Some(self)
    }

    fn scalar_at_fn(&self) -> Option<&dyn ScalarAtFn<ArrayData>> {
        Some(self)
    }

    fn search_sorted_fn(&self) -> Option<&dyn SearchSortedFn<ArrayData>> {
        Some(self)
    }

    fn slice_fn(&self) -> Option<&dyn SliceFn<ArrayData>> {
        Some(self)
    }

    fn take_fn(&self) -> Option<&dyn TakeFn<ArrayData>> {
        Some(self)
    }
}

impl ScalarAtFn<ConstantArray> for ConstantEncoding {
    fn scalar_at(&self, array: &ConstantArray, _index: usize) -> VortexResult<Scalar> {
        Ok(array.scalar())
    }
}

impl TakeFn<ConstantArray> for ConstantEncoding {
    fn take(&self, array: &ConstantArray, indices: &ArrayData) -> VortexResult<ArrayData> {
        Ok(ConstantArray::new(array.scalar(), indices.len()).into_array())
    }
}

impl SliceFn<ConstantArray> for ConstantEncoding {
    fn slice(&self, array: &ConstantArray, start: usize, stop: usize) -> VortexResult<ArrayData> {
        Ok(ConstantArray::new(array.scalar(), stop - start).into_array())
    }
}

impl FilterFn<ConstantArray> for ConstantEncoding {
    fn filter(&self, array: &ConstantArray, mask: FilterMask) -> VortexResult<ArrayData> {
        Ok(ConstantArray::new(array.scalar(), mask.true_count()).into_array())
    }
}