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use std::{
collections::{HashSet, hash_set},
ops::{Add, RangeInclusive},
sync::LazyLock,
};
use azalea_registry::{builtin::BlockKind, tags::RegistryTag};
use crate::{BlockState, block_state::BlockStateIntegerRepr};
#[derive(Clone, Debug)]
pub struct BlockStates {
pub set: HashSet<BlockState>,
}
impl From<RangeInclusive<BlockStateIntegerRepr>> for BlockStates {
fn from(range: RangeInclusive<BlockStateIntegerRepr>) -> Self {
let mut set = HashSet::with_capacity((range.end() - range.start() + 1) as usize);
for id in range {
set.insert(BlockState::try_from(id).unwrap_or_default());
}
Self { set }
}
}
impl IntoIterator for BlockStates {
type Item = BlockState;
type IntoIter = hash_set::IntoIter<BlockState>;
fn into_iter(self) -> Self::IntoIter {
self.set.into_iter()
}
}
impl BlockStates {
pub fn contains(&self, state: &BlockState) -> bool {
self.set.contains(state)
}
}
impl Add for BlockStates {
type Output = Self;
fn add(self, rhs: Self) -> Self::Output {
Self {
set: self.set.union(&rhs.set).copied().collect(),
}
}
}
impl From<HashSet<BlockKind>> for BlockStates {
fn from(set: HashSet<BlockKind>) -> Self {
Self::from(&set)
}
}
impl From<&HashSet<BlockKind>> for BlockStates {
fn from(set: &HashSet<BlockKind>) -> Self {
let mut block_states = HashSet::with_capacity(set.len());
for &block in set {
block_states.extend(BlockStates::from(block));
}
Self { set: block_states }
}
}
impl From<&[BlockKind]> for BlockStates {
fn from(arr: &[BlockKind]) -> Self {
let mut block_states = HashSet::with_capacity(arr.len());
for &block in arr {
block_states.extend(BlockStates::from(block));
}
Self { set: block_states }
}
}
impl<const N: usize> From<[BlockKind; N]> for BlockStates {
fn from(arr: [BlockKind; N]) -> Self {
Self::from(&arr[..])
}
}
impl From<&RegistryTag<BlockKind>> for BlockStates {
fn from(tag: &RegistryTag<BlockKind>) -> Self {
Self::from(&**tag)
}
}
// allows users to do like `BlockStates::from(&tags::blocks::LOGS)` instead of
// `BlockStates::from(&&tags::blocks::LOGS)`
impl From<&LazyLock<RegistryTag<BlockKind>>> for BlockStates {
fn from(tag: &LazyLock<RegistryTag<BlockKind>>) -> Self {
Self::from(&**tag)
}
}
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