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use std::ops::Index;
pub trait Record: Clone + Index<usize, Output = [u8]> {
fn new() -> Self;
// fn len(&self) -> usize;
fn iter(&self) -> impl DoubleEndedIterator<Item = &[u8]> + ExactSizeIterator;
// fn get(&self, index: usize) -> Option<&[u8]>;
// fn clear(&mut self);
// fn truncate(&mut self, len: usize);
fn push_field(&mut self, cell: &[u8]);
// #[inline(always)]
// fn is_empty(&self) -> bool {
// self.len() == 0
// }
#[must_use]
fn replace_at<'a>(&'a self, column_index: usize, new_value: &'a [u8]) -> Self
where
Self: FromIterator<&'a [u8]>,
{
self.iter()
.enumerate()
.map(|(i, v)| if i == column_index { new_value } else { v })
.collect()
}
#[must_use]
fn prepend<'a>(&'a self, cell_value: &[u8]) -> Self
where
Self: Extend<&'a [u8]>,
{
let mut new_record = Self::new();
new_record.push_field(cell_value);
new_record.extend(self.iter());
new_record
}
#[must_use]
fn append(&self, cell_value: &[u8]) -> Self {
let mut new_record = self.clone();
new_record.push_field(cell_value);
new_record
}
#[must_use]
fn remove<'a>(&'a self, column_index: usize) -> Self
where
Self: FromIterator<&'a [u8]>,
{
self.iter()
.enumerate()
.filter_map(|(i, c)| if i == column_index { None } else { Some(c) })
.collect()
}
}
impl Record for csv::ByteRecord {
#[inline(always)]
fn new() -> Self {
Self::new()
}
// #[inline(always)]
// fn len(&self) -> usize {
// self.len()
// }
#[inline(always)]
fn iter(&self) -> impl DoubleEndedIterator<Item = &[u8]> + ExactSizeIterator {
self.iter()
}
// #[inline(always)]
// fn get(&self, index: usize) -> Option<&[u8]> {
// self.get(index)
// }
// #[inline(always)]
// fn clear(&mut self) {
// self.clear();
// }
// #[inline(always)]
// fn truncate(&mut self, len: usize) {
// self.truncate(len);
// }
#[inline(always)]
fn push_field(&mut self, cell: &[u8]) {
self.push_field(cell);
}
}
impl Record for simd_csv::ByteRecord {
#[inline(always)]
fn new() -> Self {
Self::new()
}
// #[inline(always)]
// fn len(&self) -> usize {
// self.len()
// }
#[inline(always)]
fn iter(&self) -> impl DoubleEndedIterator<Item = &[u8]> + ExactSizeIterator {
self.iter()
}
// #[inline(always)]
// fn get(&self, index: usize) -> Option<&[u8]> {
// self.get(index)
// }
// #[inline(always)]
// fn clear(&mut self) {
// self.clear();
// }
// #[inline(always)]
// fn truncate(&mut self, len: usize) {
// self.truncate(len);
// }
#[inline(always)]
fn push_field(&mut self, cell: &[u8]) {
self.push_field(cell);
}
}