use std::{
fmt::{self, Debug},
ops::Deref,
result::Result as StdResult,
};
use serde::{Deserialize, Deserializer, Serialize, Serializer};
use crate::{
Result,
storage::{Cow, DataBitVec, DataVec, Storage},
util::cowvec::CowVec,
value::{Value, blob::Blob, r#type::Type},
};
pub struct BlobContainer<S: Storage = Cow> {
data: S::Vec<Blob>,
}
impl<S: Storage> Clone for BlobContainer<S> {
fn clone(&self) -> Self {
Self {
data: self.data.clone(),
}
}
}
impl<S: Storage> Debug for BlobContainer<S>
where
S::Vec<Blob>: Debug,
{
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
f.debug_struct("BlobContainer").field("data", &self.data).finish()
}
}
impl<S: Storage> PartialEq for BlobContainer<S>
where
S::Vec<Blob>: PartialEq,
{
fn eq(&self, other: &Self) -> bool {
self.data == other.data
}
}
impl Serialize for BlobContainer<Cow> {
fn serialize<Ser: Serializer>(&self, serializer: Ser) -> StdResult<Ser::Ok, Ser::Error> {
#[derive(Serialize)]
struct Helper<'a> {
data: &'a CowVec<Blob>,
}
Helper {
data: &self.data,
}
.serialize(serializer)
}
}
impl<'de> Deserialize<'de> for BlobContainer<Cow> {
fn deserialize<D: Deserializer<'de>>(deserializer: D) -> StdResult<Self, D::Error> {
#[derive(Deserialize)]
struct Helper {
data: CowVec<Blob>,
}
let h = Helper::deserialize(deserializer)?;
Ok(BlobContainer {
data: h.data,
})
}
}
impl<S: Storage> Deref for BlobContainer<S> {
type Target = [Blob];
fn deref(&self) -> &Self::Target {
self.data.as_slice()
}
}
impl BlobContainer<Cow> {
pub fn new(data: Vec<Blob>) -> Self {
Self {
data: CowVec::new(data),
}
}
pub fn with_capacity(capacity: usize) -> Self {
Self {
data: CowVec::with_capacity(capacity),
}
}
pub fn from_vec(data: Vec<Blob>) -> Self {
Self {
data: CowVec::new(data),
}
}
}
impl<S: Storage> BlobContainer<S> {
pub fn from_parts(data: S::Vec<Blob>) -> Self {
Self {
data,
}
}
pub fn len(&self) -> usize {
DataVec::len(&self.data)
}
pub fn capacity(&self) -> usize {
DataVec::capacity(&self.data)
}
pub fn is_empty(&self) -> bool {
DataVec::is_empty(&self.data)
}
pub fn clear(&mut self) {
DataVec::clear(&mut self.data);
}
pub fn push(&mut self, value: Blob) {
DataVec::push(&mut self.data, value);
}
pub fn push_default(&mut self) {
DataVec::push(&mut self.data, Blob::new(vec![]));
}
pub fn get(&self, index: usize) -> Option<&Blob> {
if index < self.len() {
DataVec::get(&self.data, index)
} else {
None
}
}
pub fn is_defined(&self, idx: usize) -> bool {
idx < self.len()
}
pub fn data(&self) -> &S::Vec<Blob> {
&self.data
}
pub fn data_mut(&mut self) -> &mut S::Vec<Blob> {
&mut self.data
}
pub fn as_string(&self, index: usize) -> String {
if index < self.len() {
self.data[index].to_string()
} else {
"none".to_string()
}
}
pub fn get_value(&self, index: usize) -> Value {
if index < self.len() {
Value::Blob(self.data[index].clone())
} else {
Value::none_of(Type::Blob)
}
}
pub fn extend(&mut self, other: &Self) -> Result<()> {
DataVec::extend_iter(&mut self.data, other.data.iter().cloned());
Ok(())
}
pub fn iter(&self) -> impl Iterator<Item = Option<&Blob>> + '_ {
self.data.iter().map(Some)
}
pub fn slice(&self, start: usize, end: usize) -> Self {
let count = (end - start).min(self.len().saturating_sub(start));
let mut new_data = DataVec::spawn(&self.data, count);
for i in start..(start + count) {
DataVec::push(&mut new_data, self.data[i].clone());
}
Self {
data: new_data,
}
}
pub fn filter(&mut self, mask: &S::BitVec) {
let mut new_data = DataVec::spawn(&self.data, DataBitVec::count_ones(mask));
for (i, keep) in DataBitVec::iter(mask).enumerate() {
if keep && i < self.len() {
DataVec::push(&mut new_data, self.data[i].clone());
}
}
self.data = new_data;
}
pub fn reorder(&mut self, indices: &[usize]) {
let mut new_data = DataVec::spawn(&self.data, indices.len());
for &idx in indices {
if idx < self.len() {
DataVec::push(&mut new_data, self.data[idx].clone());
} else {
DataVec::push(&mut new_data, Blob::new(vec![]));
}
}
self.data = new_data;
}
pub fn take(&self, num: usize) -> Self {
Self {
data: DataVec::take(&self.data, num),
}
}
}
impl Default for BlobContainer<Cow> {
fn default() -> Self {
Self::with_capacity(0)
}
}
#[cfg(test)]
pub mod tests {
use super::*;
#[test]
fn test_new() {
let blob1 = Blob::new(vec![1, 2, 3]);
let blob2 = Blob::new(vec![4, 5, 6]);
let blobs = vec![blob1.clone(), blob2.clone()];
let container = BlobContainer::new(blobs);
assert_eq!(container.len(), 2);
assert_eq!(container.get(0), Some(&blob1));
assert_eq!(container.get(1), Some(&blob2));
}
#[test]
fn test_from_vec() {
let blob1 = Blob::new(vec![10, 20, 30]);
let blob2 = Blob::new(vec![40, 50]);
let blobs = vec![blob1.clone(), blob2.clone()];
let container = BlobContainer::from_vec(blobs);
assert_eq!(container.len(), 2);
assert_eq!(container.get(0), Some(&blob1));
assert_eq!(container.get(1), Some(&blob2));
for i in 0..2 {
assert!(container.is_defined(i));
}
}
#[test]
fn test_with_capacity() {
let container = BlobContainer::with_capacity(10);
assert_eq!(container.len(), 0);
assert!(container.is_empty());
assert!(container.capacity() >= 10);
}
#[test]
fn test_push_with_default() {
let mut container = BlobContainer::with_capacity(3);
let blob1 = Blob::new(vec![1, 2, 3]);
let blob2 = Blob::new(vec![7, 8, 9]);
container.push(blob1.clone());
container.push_default();
container.push(blob2.clone());
assert_eq!(container.len(), 3);
assert_eq!(container.get(0), Some(&blob1));
assert_eq!(container.get(1), Some(&Blob::new(vec![]))); assert_eq!(container.get(2), Some(&blob2));
assert!(container.is_defined(0));
assert!(container.is_defined(1));
assert!(container.is_defined(2));
}
#[test]
fn testault() {
let container = BlobContainer::default();
assert_eq!(container.len(), 0);
assert!(container.is_empty());
}
}