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use crate::prelude::*;

macro_rules! get_any_value_unchecked {
    ($self:ident, $index:expr) => {{
        let (chunk_idx, idx) = $self.index_to_chunked_index($index);
        debug_assert!(chunk_idx < $self.chunks.len());
        let arr = &**$self.chunks.get_unchecked(chunk_idx);
        debug_assert!(idx < arr.len());
        $self.arr_to_any_value(arr, idx)
    }};
}

macro_rules! get_any_value {
    ($self:ident, $index:expr) => {{
        let (chunk_idx, idx) = $self.index_to_chunked_index($index);
        let arr = &*$self.chunks[chunk_idx];
        assert!(idx < arr.len());
        // SAFETY
        // bounds are checked
        unsafe { $self.arr_to_any_value(arr, idx) }
    }};
}

impl<T> ChunkAnyValue for ChunkedArray<T>
where
    T: PolarsNumericType,
{
    #[inline]
    unsafe fn get_any_value_unchecked(&self, index: usize) -> AnyValue {
        get_any_value_unchecked!(self, index)
    }

    fn get_any_value(&self, index: usize) -> AnyValue {
        get_any_value!(self, index)
    }
}

impl ChunkAnyValue for BooleanChunked {
    #[inline]
    unsafe fn get_any_value_unchecked(&self, index: usize) -> AnyValue {
        get_any_value_unchecked!(self, index)
    }

    fn get_any_value(&self, index: usize) -> AnyValue {
        get_any_value!(self, index)
    }
}

impl ChunkAnyValue for Utf8Chunked {
    #[inline]
    unsafe fn get_any_value_unchecked(&self, index: usize) -> AnyValue {
        get_any_value_unchecked!(self, index)
    }

    fn get_any_value(&self, index: usize) -> AnyValue {
        get_any_value!(self, index)
    }
}

impl ChunkAnyValue for ListChunked {
    #[inline]
    unsafe fn get_any_value_unchecked(&self, index: usize) -> AnyValue {
        get_any_value_unchecked!(self, index)
    }

    fn get_any_value(&self, index: usize) -> AnyValue {
        get_any_value!(self, index)
    }
}

impl ChunkAnyValue for CategoricalChunked {
    #[inline]
    unsafe fn get_any_value_unchecked(&self, index: usize) -> AnyValue {
        get_any_value_unchecked!(self, index)
    }

    fn get_any_value(&self, index: usize) -> AnyValue {
        get_any_value!(self, index)
    }
}

#[cfg(feature = "object")]
impl<T: PolarsObject> ChunkAnyValue for ObjectChunked<T> {
    #[inline]
    unsafe fn get_any_value_unchecked(&self, index: usize) -> AnyValue {
        match self.get_object_unchecked(index) {
            None => AnyValue::Null,
            Some(v) => AnyValue::Object(v),
        }
    }

    fn get_any_value(&self, index: usize) -> AnyValue {
        match self.get_object(index) {
            None => AnyValue::Null,
            Some(v) => AnyValue::Object(v),
        }
    }
}