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use super::{Bitmap64, Deserializer, Serializer, Statistics};
use core::mem::MaybeUninit;
use core::ops::{Bound, RangeBounds};
use core::prelude::v1::*;
use core::ptr::{self, NonNull};
#[cfg(feature = "alloc")]
use alloc::vec::Vec;
impl Bitmap64 {
#[inline]
pub(crate) unsafe fn take_heap(p: *mut ffi::roaring64_bitmap_t) -> Self {
let raw = NonNull::new(p).expect("non-null ptr");
Self { raw }
}
/// Create a new empty bitmap
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
/// let bitmap = Bitmap64::new();
/// assert_eq!(bitmap.cardinality(), 0);
/// ```
#[inline]
#[must_use]
#[doc(alias = "roaring64_bitmap_create")]
pub fn new() -> Self {
unsafe { Self::take_heap(ffi::roaring64_bitmap_create()) }
}
/// Creates a new bitmap from a slice of u64 integers
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
/// let bitmap = Bitmap64::of(&[1, 2, 3]);
/// assert_eq!(bitmap.cardinality(), 3);
/// ```
#[inline]
#[doc(alias = "roaring64_bitmap_of_ptr")]
#[must_use]
pub fn of(slice: &[u64]) -> Self {
unsafe { Self::take_heap(ffi::roaring64_bitmap_of_ptr(slice.len(), slice.as_ptr())) }
}
/// Create a new bitmap containing all the values in a range
#[inline]
#[doc(alias = "roaring64_bitmap_from_range")]
#[must_use]
pub fn from_range<R: RangeBounds<u64>>(range: R) -> Self {
Self::from_range_with_step(range, 1)
}
/// Create a new bitmap containing all the values in `range` which are a multiple of `step` away from the lower
/// bound
///
/// If `step` is 0 or there are no values which are a multiple of `step` away from the lower bound within range,
/// an empty bitmap is returned
///
/// # Examples
///
/// ```
/// use std::ops::Bound;
/// use croaring::Bitmap64;
/// let bitmap = Bitmap64::from_range_with_step(0..10, 3);
/// assert_eq!(bitmap.iter().collect::<Vec<_>>(), vec![0, 3, 6, 9]);
///
/// // empty ranges
/// assert_eq!(Bitmap64::from_range_with_step(0..0, 1), Bitmap64::new());
/// assert_eq!(Bitmap64::from_range_with_step(100..=0, 0), Bitmap64::new());
///
/// // step is 0
/// assert_eq!(Bitmap64::from_range_with_step(0..10, 0), Bitmap64::new());
///
/// // No values of step in range
/// let bitmap = Bitmap64::from_range_with_step((Bound::Excluded(0), Bound::Included(10)), 100);
/// assert_eq!(bitmap, Bitmap64::new());
/// let bitmap = Bitmap64::from_range_with_step((Bound::Excluded(u64::MAX), Bound::Included(u64::MAX)), 1);
/// assert_eq!(bitmap, Bitmap64::new());
///
/// // Exclusive ranges still step from the start, but do not include it
/// let bitmap = Bitmap64::from_range_with_step((Bound::Excluded(10), Bound::Included(30)), 10);
/// assert_eq!(bitmap.iter().collect::<Vec<_>>(), vec![20, 30]);
///
/// // Ranges including max value
/// let bitmap = Bitmap64::from_range_with_step((u64::MAX - 1)..=u64::MAX, 1);
/// assert_eq!(bitmap.iter().collect::<Vec<_>>(), vec![u64::MAX - 1, u64::MAX]);
/// let bitmap = Bitmap64::from_range_with_step((u64::MAX - 1)..=u64::MAX, 3);
/// assert_eq!(bitmap.iter().collect::<Vec<_>>(), vec![u64::MAX - 1]);
/// ```
#[inline]
#[doc(alias = "roaring64_bitmap_from_range")]
#[must_use]
pub fn from_range_with_step<R: RangeBounds<u64>>(range: R, step: u64) -> Self {
// This can't use `range_to_exclusive` because when the start is excluded, we want
// to start at the next step, not one more
let start = match range.start_bound() {
Bound::Included(&i) => i,
Bound::Excluded(&i) => match i.checked_add(step) {
Some(i) => i,
None => return Self::new(),
},
Bound::Unbounded => 0,
};
let end_inclusive = match range.end_bound() {
Bound::Included(&i) => i,
Bound::Excluded(&i) => match i.checked_sub(1) {
Some(i) => i,
None => return Self::new(),
},
Bound::Unbounded => u64::MAX,
};
// roaring64_bitmap_from_range takes an exclusive range,
// so we need to handle the case where the range should include u64::MAX,
// and manually add it in afterwards since there's no way to set it with an exclusive range
let (end, add_max) = match end_inclusive.checked_add(1) {
Some(i) => (i, false),
None => (u64::MAX, (u64::MAX - start) % step == 0),
};
unsafe {
let result = ffi::roaring64_bitmap_from_range(start, end, step);
if result.is_null() {
Self::new()
} else {
let mut result = Self::take_heap(result);
if add_max {
result.add(u64::MAX);
}
result
}
}
}
/// Add a value to the bitmap
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
/// let mut bitmap = Bitmap64::new();
/// bitmap.add(1);
/// assert!(bitmap.contains(1));
/// ```
#[inline]
#[doc(alias = "roaring64_bitmap_add")]
pub fn add(&mut self, value: u64) {
unsafe { ffi::roaring64_bitmap_add(self.raw.as_ptr(), value) }
}
/// Add the integer element to the bitmap. Returns true if the value was
/// added, false if the value was already in the bitmap.
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
///
/// let mut bitmap = Bitmap64::new();
/// assert!(bitmap.add_checked(1));
/// assert!(!bitmap.add_checked(1));
/// ```
#[inline]
#[doc(alias = "roaring64_bitmap_add_checked")]
pub fn add_checked(&mut self, value: u64) -> bool {
unsafe { ffi::roaring64_bitmap_add_checked(self.raw.as_ptr(), value) }
}
/// Add many values to the bitmap
///
/// See also [`Bitmap64::extend`]
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
///
/// let mut bitmap = Bitmap64::new();
/// bitmap.add_many(&[1, 2, 3]);
///
/// assert!(bitmap.contains(1));
/// assert!(bitmap.contains(2));
/// assert!(bitmap.contains(3));
/// ```
#[inline]
#[doc(alias = "roaring64_bitmap_add_many")]
pub fn add_many(&mut self, values: &[u64]) {
unsafe { ffi::roaring64_bitmap_add_many(self.raw.as_ptr(), values.len(), values.as_ptr()) }
}
/// Add all values in range
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
///
/// let mut bitmap = Bitmap64::new();
/// bitmap.add_range(1..3);
///
/// assert!(bitmap.contains(1));
/// assert!(bitmap.contains(2));
/// assert!(!bitmap.contains(3));
///
/// let mut bitmap2 = Bitmap64::new();
/// bitmap2.add_range(3..1);
/// assert!(bitmap2.is_empty());
///
/// let mut bitmap3 = Bitmap64::new();
/// bitmap3.add_range(3..3);
/// assert!(bitmap3.is_empty());
///
/// let mut bitmap4 = Bitmap64::new();
/// bitmap4.add_range(..=2);
/// bitmap4.add_range(u64::MAX..=u64::MAX);
/// assert!(bitmap4.contains(0));
/// assert!(bitmap4.contains(1));
/// assert!(bitmap4.contains(2));
/// assert!(bitmap4.contains(u64::MAX));
/// assert_eq!(bitmap4.cardinality(), 4);
/// ```
#[inline]
#[doc(alias = "roaring64_bitmap_add_range_closed")]
pub fn add_range<R: RangeBounds<u64>>(&mut self, range: R) {
let (start, end) = range_to_inclusive(range);
unsafe { ffi::roaring64_bitmap_add_range_closed(self.raw.as_ptr(), start, end) }
}
/// Remove a value from the bitmap if present
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
/// let mut bitmap = Bitmap64::of(&[1, 2, 3]);
/// bitmap.remove(2);
/// assert!(!bitmap.contains(2));
/// bitmap.remove(99); // It is not an error to remove a value not in the bitmap
/// ```
#[inline]
#[doc(alias = "roaring64_bitmap_remove")]
pub fn remove(&mut self, value: u64) {
unsafe { ffi::roaring64_bitmap_remove(self.raw.as_ptr(), value) }
}
/// Remove a value from the bit map if present, and return if the value was previously present
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
/// let mut bitmap = Bitmap64::of(&[1, 2, 3]);
/// assert!(bitmap.remove_checked(2));
/// assert!(!bitmap.remove_checked(2));
/// ```
#[inline]
#[doc(alias = "roaring64_bitmap_remove_checked")]
pub fn remove_checked(&mut self, value: u64) -> bool {
unsafe { ffi::roaring64_bitmap_remove_checked(self.raw.as_ptr(), value) }
}
/// Remove many values from the bitmap
///
/// This should be faster than calling `remove` multiple times.
///
/// In order to exploit this optimization, the caller should attempt to keep values with the same high 48 bits of
/// the value as consecutive elements in `vals`
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
/// let mut bitmap = Bitmap64::of(&[1, 2, 3, 4, 5, 6, 7, 8, 9]);
/// bitmap.remove_many(&[1, 2, 3, 4, 5, 6, 7, 8]);
/// assert_eq!(bitmap.iter().collect::<Vec<_>>(), vec![9]);
/// ```
#[inline]
#[doc(alias = "roaring64_bitmap_remove_many")]
pub fn remove_many(&mut self, vals: &[u64]) {
unsafe { ffi::roaring64_bitmap_remove_many(self.raw.as_ptr(), vals.len(), vals.as_ptr()) }
}
/// Remove all values from the specified iterator
///
/// This should be faster than calling `remove` multiple times.
///
/// In order to exploit this optimization, the caller should attempt to keep values with the same high 48 bits of
/// the value as consecutive elements in `it`
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
/// let mut bitmap = Bitmap64::of(&[1, 2, 3, 4, 5, 6, 7, 8, 9]);
/// bitmap.remove_all(1..=8); // Remove all values from iterator
/// assert_eq!(bitmap.iter().collect::<Vec<_>>(), vec![9]);
/// ```
#[inline]
#[doc(alias = "roaring64_bitmap_remove_bulk")]
pub fn remove_all<It>(&mut self, it: It)
where
It: IntoIterator<Item = u64>,
{
let mut ctx = MaybeUninit::<ffi::roaring64_bulk_context_t>::zeroed();
it.into_iter().for_each(|value| unsafe {
ffi::roaring64_bitmap_remove_bulk(self.raw.as_ptr(), ctx.as_mut_ptr(), value);
});
}
/// Remove all values in range
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
/// let mut bitmap = Bitmap64::new();
/// bitmap.add_range(1..4);
/// assert_eq!(bitmap.iter().collect::<Vec<_>>(), vec![1, 2, 3]);
///
/// bitmap.remove_range(1..=2);
/// assert_eq!(bitmap.iter().collect::<Vec<_>>(), vec![3]);
/// ```
#[inline]
#[doc(alias = "roaring64_bitmap_remove_range_closed")]
pub fn remove_range<R: RangeBounds<u64>>(&mut self, range: R) {
let (start, end) = range_to_inclusive(range);
unsafe { ffi::roaring64_bitmap_remove_range_closed(self.raw.as_ptr(), start, end) }
}
/// Empty the bitmap
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
///
/// let mut bitmap = Bitmap64::from([1, 2, 3]);
/// assert!(!bitmap.is_empty());
/// bitmap.clear();
/// assert!(bitmap.is_empty());
/// ```
#[inline]
#[doc(alias = "roaring64_bitmap_clear")]
pub fn clear(&mut self) {
unsafe { ffi::roaring64_bitmap_clear(self.raw.as_ptr()) }
}
/// Returns the number of values in the bitmap
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
/// let mut bitmap = Bitmap64::new();
/// assert_eq!(bitmap.cardinality(), 0);
/// bitmap.add(1);
/// assert_eq!(bitmap.cardinality(), 1);
/// ```
#[inline]
#[must_use]
#[doc(alias = "roaring64_bitmap_get_cardinality")]
pub fn cardinality(&self) -> u64 {
unsafe { ffi::roaring64_bitmap_get_cardinality(self.raw.as_ptr()) }
}
/// Returns the number of values in the bitmap in the given `range`
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
/// let mut bitmap = Bitmap64::of(&[1, 3, 4, u64::MAX]);
///
/// assert_eq!(bitmap.range_cardinality(..1), 0);
/// assert_eq!(bitmap.range_cardinality(..2), 1);
/// assert_eq!(bitmap.range_cardinality(2..5), 2);
/// assert_eq!(bitmap.range_cardinality(..5), 3);
/// assert_eq!(bitmap.range_cardinality(1..=4), 3);
///
/// assert_eq!(bitmap.range_cardinality(4..=u64::MAX), 2);
/// ```
#[inline]
#[must_use]
#[doc(alias = "roaring64_bitmap_range_cardinality")]
pub fn range_cardinality<R: RangeBounds<u64>>(&self, range: R) -> u64 {
let (start, end) = range_to_inclusive(range);
unsafe { ffi::roaring64_bitmap_range_closed_cardinality(self.raw.as_ptr(), start, end) }
}
/// Returns true if the bitmap is empty
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
/// let mut bitmap = Bitmap64::new();
/// assert!(bitmap.is_empty());
/// bitmap.add(1);
/// assert!(!bitmap.is_empty());
/// ```
#[inline]
#[must_use]
#[doc(alias = "roaring64_bitmap_is_empty")]
pub fn is_empty(&self) -> bool {
unsafe { ffi::roaring64_bitmap_is_empty(self.raw.as_ptr()) }
}
/// Returns true if all the elements of self are in other
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
///
/// let bitmap1: Bitmap64 = (5..10).collect();
/// let bitmap2: Bitmap64 = (5..8).collect();
/// let bitmap3: Bitmap64 = (5..10).collect();
/// let bitmap4: Bitmap64 = (9..11).collect();
///
/// assert!(bitmap2.is_subset(&bitmap1));
/// assert!(bitmap3.is_subset(&bitmap1));
/// assert!(!bitmap4.is_subset(&bitmap1));
/// ```
#[inline]
#[must_use]
#[doc(alias = "roaring64_bitmap_is_subset")]
pub fn is_subset(&self, other: &Self) -> bool {
unsafe { ffi::roaring64_bitmap_is_subset(self.raw.as_ptr(), other.raw.as_ptr()) }
}
/// Returns true if all the elements of self are in other and self is not equal to other
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
///
/// let bitmap1: Bitmap64 = (5..9).collect();
/// let bitmap2: Bitmap64 = (5..8).collect();
/// let bitmap3: Bitmap64 = (5..10).collect();
/// let bitmap4: Bitmap64 = (9..11).collect();
///
/// assert!(bitmap2.is_strict_subset(&bitmap1));
/// assert!(!bitmap3.is_strict_subset(&bitmap1));
/// assert!(!bitmap4.is_strict_subset(&bitmap1));
/// assert!(!bitmap1.is_strict_subset(&bitmap1));
///
#[inline]
#[must_use]
#[doc(alias = "roaring64_bitmap_is_strict_subset")]
pub fn is_strict_subset(&self, other: &Self) -> bool {
unsafe { ffi::roaring64_bitmap_is_strict_subset(self.raw.as_ptr(), other.raw.as_ptr()) }
}
/// Returns the smallest value in the bitmap, or None if the bitmap is empty
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
/// let mut bitmap: Bitmap64 = (5..10).collect();
/// let empty_bitmap: Bitmap64 = Bitmap64::new();
///
/// assert_eq!(bitmap.minimum(), Some(5));
/// assert_eq!(empty_bitmap.minimum(), None);
///
/// bitmap.add(3);
///
/// assert_eq!(bitmap.minimum(), Some(3));
/// ```
#[inline]
#[must_use]
#[doc(alias = "roaring64_bitmap_minimum")]
pub fn minimum(&self) -> Option<u64> {
if self.is_empty() {
None
} else {
Some(unsafe { ffi::roaring64_bitmap_minimum(self.raw.as_ptr()) })
}
}
/// Returns the largest value in the bitmap, or None if the bitmap is empty
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
/// let mut bitmap: Bitmap64 = (5..10).collect();
/// let empty_bitmap: Bitmap64 = Bitmap64::new();
///
/// assert_eq!(bitmap.maximum(), Some(9));
/// assert_eq!(empty_bitmap.maximum(), None);
///
/// bitmap.add(15);
///
/// assert_eq!(bitmap.maximum(), Some(15));
/// ```
#[inline]
#[must_use]
#[doc(alias = "roaring64_bitmap_maximum")]
pub fn maximum(&self) -> Option<u64> {
if self.is_empty() {
None
} else {
Some(unsafe { ffi::roaring64_bitmap_maximum(self.raw.as_ptr()) })
}
}
/// Attempt to compress the bitmap by finding runs of consecutive values
///
/// Returns true if the bitmap has at least one run container after optimization
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
/// let mut bitmap: Bitmap64 = (100..1000).collect();
/// assert_eq!(bitmap.cardinality(), 900);
/// assert!(bitmap.run_optimize());
/// ```
#[inline]
#[doc(alias = "roaring64_bitmap_run_optimize")]
pub fn run_optimize(&mut self) -> bool {
unsafe { ffi::roaring64_bitmap_run_optimize(self.raw.as_ptr()) }
}
/// Remove run-length encoding even when it is more space efficient
///
/// Returns true if a change was applied
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
///
/// let mut bitmap: Bitmap64 = (100..1000).collect();
///
/// bitmap.run_optimize();
///
/// assert!(bitmap.remove_run_compression());
/// assert!(!bitmap.remove_run_compression());
/// ```
#[inline]
#[doc(alias = "roaring64_bitmap_remove_run_compression")]
pub fn remove_run_compression(&mut self) -> bool {
unsafe { ffi::roaring64_bitmap_remove_run_compression(self.raw.as_ptr()) }
}
/// Returns true if the element is contained in the bitmap
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
/// let mut bitmap = Bitmap64::new();
/// assert!(!bitmap.contains(1));
/// bitmap.add(1);
/// assert!(bitmap.contains(1));
/// ```
#[inline]
#[must_use]
#[doc(alias = "roaring64_bitmap_contains")]
pub fn contains(&self, value: u64) -> bool {
unsafe { ffi::roaring64_bitmap_contains(self.raw.as_ptr(), value) }
}
/// Check whether a range of values of range are ALL present
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
///
/// let bitmap = Bitmap64::of(&[1, 2, 4]);
/// assert!(bitmap.contains_range(1..=2));
/// assert!(!bitmap.contains_range(1..=4));
///
/// let mut bitmap = bitmap.clone();
/// bitmap.add(u64::MAX - 1);
/// bitmap.add(u64::MAX);
/// assert!(bitmap.contains_range((u64::MAX - 1)..=u64::MAX));
///
/// // Empty ranges are always contained
/// assert!(bitmap.contains_range(10..0));
/// ```
#[inline]
#[must_use]
#[doc(alias = "roaring64_bitmap_contains_range")]
pub fn contains_range<R: RangeBounds<u64>>(&self, range: R) -> bool {
let Some(exclusive_range) = range_to_exclusive(range) else {
return true;
};
self._contains_range(exclusive_range)
}
#[inline]
fn _contains_range(&self, exclusive_range: ExclusiveRangeRes) -> bool {
let ExclusiveRangeRes {
start,
end,
needs_max,
} = exclusive_range;
if needs_max && !self.contains(u64::MAX) {
return false;
}
unsafe { ffi::roaring64_bitmap_contains_range(self.raw.as_ptr(), start, end) }
}
/// Selects the element at index 'rank' where the smallest element is at index 0
///
/// If the size of the bitmap is strictly greater than rank, then this function returns the element of the given
/// rank, otherwise, it returns None
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
/// let bitmap: Bitmap64 = (5..10).collect();
///
/// assert_eq!(bitmap.select(0), Some(5));
/// assert_eq!(bitmap.select(1), Some(6));
/// assert_eq!(bitmap.select(2), Some(7));
/// assert_eq!(bitmap.select(3), Some(8));
/// assert_eq!(bitmap.select(4), Some(9));
/// assert_eq!(bitmap.select(5), None);
/// ```
#[inline]
#[must_use]
#[doc(alias = "roaring64_bitmap_select")]
pub fn select(&self, rank: u64) -> Option<u64> {
let mut element = 0u64;
let has_elem: bool =
unsafe { ffi::roaring64_bitmap_select(self.raw.as_ptr(), rank, &mut element) };
has_elem.then_some(element)
}
/// Returns the number of integers that are smaller or equal to x
///
/// If x is the first element, this function will return 1. If x is smaller than the smallest element, this
/// function will return 0
///
/// The indexing convention differs between [`Self::select`] and [`Self::rank`]: [`Self::select`] refers to the
/// smallest value as having index 0, whereas [`Self::rank`] returns 1 when ranking the smallest value
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
/// let mut bitmap: Bitmap64 = (5..10).collect();
///
/// assert_eq!(bitmap.rank(8), 4);
///
/// assert_eq!(bitmap.rank(11), 5);
/// assert_eq!(bitmap.rank(15), 5);
///
/// bitmap.add(15);
///
/// assert_eq!(bitmap.rank(11), 5);
/// assert_eq!(bitmap.rank(15), 6);
/// ```
#[inline]
#[must_use]
#[doc(alias = "roaring64_bitmap_rank")]
pub fn rank(&self, value: u64) -> u64 {
unsafe { ffi::roaring64_bitmap_rank(self.raw.as_ptr(), value) }
}
/// Returns the index of x in the given roaring bitmap.
///
/// If the roaring bitmap doesn't contain x, this function will return None.
/// The difference with the [rank][Self::rank] function is that this function
/// will return None when x is not the element of roaring bitmap, but the rank
/// function will return the the number of items less than x, and would require
/// a call to [contains][Self::contains] to check if x is in the roaring bitmap.
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
///
/// let mut bitmap = Bitmap64::from_range(5..10);
/// assert_eq!(bitmap.position(4), None);
/// assert_eq!(bitmap.position(5), Some(0));
/// assert_eq!(bitmap.position(9), Some(4));
/// assert_eq!(bitmap.position(10), None);
/// assert_eq!(bitmap.position(9999), None);
///
/// // rank returns the number of values smaller or equal to x, so it always returns a value, and
/// // returns `position + 1` when x is contained in the bitmap.
/// assert_eq!(bitmap.rank(4), 0);
/// assert_eq!(bitmap.rank(5), 1);
/// assert_eq!(bitmap.rank(9), 5);
/// assert_eq!(bitmap.rank(10), 5);
/// assert_eq!(bitmap.rank(9999), 5);
///
/// let pos = bitmap.position(7).unwrap();
/// assert_eq!(bitmap.select(pos), Some(7));
/// ```
#[inline]
#[must_use]
#[doc(alias = "roaring64_bitmap_get_index")]
#[doc(alias = "index")]
pub fn position(&self, value: u64) -> Option<u64> {
let mut index = 0u64;
let has_index: bool =
unsafe { ffi::roaring64_bitmap_get_index(self.raw.as_ptr(), value, &mut index) };
has_index.then_some(index)
}
/// Negates the bits in the given range
/// any integer present in this range and in the bitmap is removed.
/// Returns result as a new bitmap.
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
///
/// let bitmap1 = Bitmap64::of(&[4]);
///
/// let bitmap2 = bitmap1.flip(1..3);
///
/// assert_eq!(bitmap2.cardinality(), 3);
/// assert!(bitmap2.contains(1));
/// assert!(bitmap2.contains(2));
/// assert!(!bitmap2.contains(3));
/// assert!(bitmap2.contains(4));
///
/// let bitmap3 = bitmap1.flip(1..=5);
/// assert_eq!(bitmap3.iter().collect::<Vec<_>>(), [1, 2, 3, 5])
/// ```
#[inline]
#[doc(alias = "roaring64_bitmap_flip")]
#[doc(alias = "roaring64_bitmap_flip_closed")]
#[must_use]
pub fn flip<R: RangeBounds<u64>>(&self, range: R) -> Self {
let (start, end) = range_to_inclusive(range);
unsafe {
Self::take_heap(ffi::roaring64_bitmap_flip_closed(
self.raw.as_ptr(),
start,
end,
))
}
}
/// Negates the bits in the given range
/// any integer present in this range and in the bitmap is removed.
/// Stores the result in the current bitmap.
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
///
/// let mut bitmap1 = Bitmap64::of(&[4]);
/// bitmap1.flip_inplace(1..3);
///
/// assert_eq!(bitmap1.cardinality(), 3);
/// assert!(bitmap1.contains(1));
/// assert!(bitmap1.contains(2));
/// assert!(!bitmap1.contains(3));
/// assert!(bitmap1.contains(4));
/// bitmap1.flip_inplace(4..=4);
/// assert_eq!(bitmap1.iter().collect::<Vec<_>>(), [1, 2]);
/// ```
#[inline]
#[doc(alias = "roaring64_bitmap_flip_inplace")]
pub fn flip_inplace<R: RangeBounds<u64>>(&mut self, range: R) {
let (start, end) = range_to_inclusive(range);
unsafe { ffi::roaring64_bitmap_flip_closed_inplace(self.raw.as_ptr(), start, end) };
}
/// Returns a new bitmap with all values shifted by the given offset
///
/// Any values which would underflow or overflow `u64` are dropped.
///
/// # Examples
/// ```
/// use croaring::Bitmap64;
///
/// let bitmap1 = Bitmap64::of(&[0, 1, 1000, u64::MAX]);
/// let shifted_down = bitmap1.add_offset(-1);
/// assert_eq!(shifted_down.iter().collect::<Vec<_>>(), [0, 999, u64::MAX - 1]);
/// let shifted_up = bitmap1.add_offset(1);
/// assert_eq!(shifted_up.iter().collect::<Vec<_>>(), [1, 2, 1001]);
/// let big_shifted = bitmap1.add_offset(i128::from(u64::MAX) + 1);
/// assert_eq!(big_shifted.iter().collect::<Vec<_>>(), []);
/// ```
#[inline]
#[doc(alias = "roaring64_bitmap_add_offset_signed")]
#[must_use]
pub fn add_offset(&self, offset: i128) -> Self {
let positive = offset >= 0;
let offset = offset.unsigned_abs();
let Ok(offset) = u64::try_from(offset) else {
// If the offset doesn't fit in 64 bits, we shifted everything out
return Self::new();
};
unsafe {
Self::take_heap(ffi::roaring64_bitmap_add_offset_signed(
self.raw.as_ptr(),
positive,
offset,
))
}
}
/// Returns a vector containing the values in the bitmap in sorted order
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
/// let mut bitmap = Bitmap64::of(&[1, 2, 3]);
/// assert_eq!(bitmap.to_vec(), vec![1, 2, 3]);
/// ```
#[must_use]
#[cfg(feature = "alloc")]
pub fn to_vec(&self) -> Vec<u64> {
let len = self
.cardinality()
.try_into()
.expect("cardinality must fit in a usize");
let mut vec = alloc::vec![0; len];
unsafe { ffi::roaring64_bitmap_to_uint64_array(self.raw.as_ptr(), vec.as_mut_ptr()) };
vec
}
/// Shrink the memory allocation of the bitmap if needed
///
/// Returns the number of bytes saved
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
///
/// let mut bitmap = Bitmap64::new();
/// for i in 0..100 {
/// bitmap.add(i * 0x1_0000_0000);
/// }
/// bitmap.clear();
/// let saved_bytes = bitmap.shrink_to_fit();
/// assert!(saved_bytes > 0);
/// let more_saved_bytes = bitmap.shrink_to_fit();
/// assert_eq!(more_saved_bytes, 0);
/// ```
#[inline]
pub fn shrink_to_fit(&mut self) -> usize {
unsafe { ffi::roaring64_bitmap_shrink_to_fit(self.raw.as_ptr()) }
}
/// Computes the serialized size in bytes of the Bitmap in format `S`.
///
/// Note that the [`crate::Frozen`] format requires calling [`Self::shrink_to_fit`] before
/// calling serialization functions.
#[inline]
#[must_use]
pub fn get_serialized_size_in_bytes<S: Serializer>(&self) -> usize {
S::get_serialized_size_in_bytes(self)
}
/// Serializes a bitmap to a slice of bytes in format `S`.
///
/// # Examples
///
/// ```
/// use croaring::{Bitmap64, Portable};
///
/// let original_bitmap: Bitmap64 = (1..5).collect();
///
/// let serialized_buffer = original_bitmap.serialize::<Portable>();
///
/// let deserialized_bitmap = Bitmap64::deserialize::<Portable>(&serialized_buffer);
///
/// assert_eq!(original_bitmap, deserialized_bitmap);
/// ```
#[inline]
#[must_use]
#[cfg(feature = "alloc")]
pub fn serialize<S: Serializer + crate::serialization::NoAlign>(&self) -> Vec<u8> {
let mut dst = Vec::new();
let res = self.serialize_into_vec::<S>(&mut dst);
debug_assert_eq!(res.as_ptr(), dst.as_ptr());
dst
}
/// Serializes a bitmap to a slice of bytes in format `S`, re-using existing capacity
///
/// `dst` is not cleared, data is added after any existing data. Returns the added slice of `dst`.
/// Because of alignment requirements, the serialized data may not start at the beginning of
/// `dst`: the returned slice may not start at `dst.as_ptr()`.
///
/// Note that the [`crate::Frozen`] format requires calling [`Self::shrink_to_fit`] before
/// calling serialization functions. If this is not done, this function will return an empty
/// slice.
///
/// # Examples
///
/// ```
/// use croaring::{Bitmap64, Portable};
///
/// let original_bitmap_1: Bitmap64 = (1..5).collect();
/// let original_bitmap_2: Bitmap64 = (1..10).collect();
///
/// let mut data = Vec::new();
/// for bitmap in [original_bitmap_1, original_bitmap_2] {
/// data.clear();
/// let serialized = bitmap.serialize_into_vec::<Portable>(&mut data);
/// // do something with serialized
/// # let _ = serialized;
/// }
/// ```
///
/// ```
/// use croaring::{Bitmap64, Frozen};
///
/// let original_bitmap_1: Bitmap64 = (1..5).collect();
/// let original_bitmap_2: Bitmap64 = (1..10).collect();
///
/// let mut data = Vec::new();
/// for mut bitmap in [original_bitmap_1, original_bitmap_2] {
/// data.clear();
/// bitmap.shrink_to_fit();
/// let serialized = bitmap.serialize_into_vec::<Frozen>(&mut data);
/// // do something with serialized
/// # let _ = serialized;
/// }
/// ```
#[inline]
#[must_use]
#[doc(alias = "roaring64_bitmap_portable_serialize")]
#[cfg(feature = "alloc")]
pub fn serialize_into_vec<'a, S: Serializer>(&self, dst: &'a mut Vec<u8>) -> &'a [u8] {
S::serialize_into_vec(self, dst)
}
/// Serializes a bitmap to a slice of bytes in format `S`
///
/// Returns the serialized data if the buffer was large enough, otherwise None.
///
/// See [`Self::get_serialized_size_in_bytes`] to determine the required buffer size.
/// Note also that some ([`crate::Frozen`]) formats require alignment, so the buffer size may need to
/// be larger than the serialized size.
///
/// Note that the [`crate::Frozen`] format requires calling [`Self::shrink_to_fit`] before
/// calling serialization functions. If this is not done, this function will return None.
///
/// See also [`Self::serialize_into_vec`] for a version that uses a Vec instead, or, for
/// advanced use-cases, see [`Serializer::try_serialize_into`].
///
/// # Examples
///
/// ```
/// use croaring::{Bitmap64, Frozen};
///
/// let mut original_bitmap: Bitmap64 = (1..5).collect();
/// let mut data = [0u8; 1000];
/// original_bitmap.shrink_to_fit();
/// let serialized_data: &[u8] = original_bitmap.try_serialize_into::<Frozen>(&mut data).unwrap();
/// // do something with serialized_data
/// # let _ = serialized_data;
/// ```
#[inline]
#[must_use]
pub fn try_serialize_into<'a, S: Serializer>(&self, dst: &'a mut [u8]) -> Option<&'a mut [u8]> {
S::try_serialize_into_aligned(self, dst)
}
/// Given a serialized bitmap as slice of bytes in format `S`, returns a `Bitmap64` instance.
/// See example of [`Self::serialize`] function.
///
/// On invalid input returns None.
///
/// # Examples
///
/// ```
/// use croaring::{Bitmap64, Portable};
///
/// let original_bitmap: Bitmap64 = (1..5).collect();
/// let mut buf = [0; 1024];
/// let serialized_buffer: &[u8] = original_bitmap.try_serialize_into::<Portable>(&mut buf).unwrap();
///
/// let deserialized_bitmap = Bitmap64::try_deserialize::<Portable>(serialized_buffer);
/// assert_eq!(original_bitmap, deserialized_bitmap.unwrap());
///
/// let invalid_buffer: Vec<u8> = vec![3];
/// let deserialized_bitmap = Bitmap64::try_deserialize::<Portable>(&invalid_buffer);
/// assert!(deserialized_bitmap.is_none());
/// ```
#[inline]
#[must_use]
pub fn try_deserialize<D: Deserializer>(buffer: &[u8]) -> Option<Self> {
D::try_deserialize(buffer)
}
/// Given a serialized bitmap as slice of bytes in format `S `, returns a bitmap instance.
/// See example of [`Self::serialize`] function.
///
/// On invalid input returns empty bitmap.
#[inline]
#[must_use]
pub fn deserialize<D: Deserializer>(buffer: &[u8]) -> Self {
Self::try_deserialize::<D>(buffer).unwrap_or_default()
}
/// Iterate over the values in the bitmap in sorted order
///
/// If `f` returns `Break`, iteration will stop and the value will be returned,
/// Otherwise, iteration continues. If `f` never returns break, `None` is returned after all values are visited.
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
/// use std::ops::ControlFlow;
///
/// let bitmap = Bitmap64::of(&[1, 2, 3, 14, 20, 21, 100]);
/// let mut even_nums_under_50 = vec![];
///
/// let first_over_50 = bitmap.for_each(|value| {
/// if value > 50 {
/// return ControlFlow::Break(value);
/// }
/// if value % 2 == 0 {
/// even_nums_under_50.push(value);
/// }
/// ControlFlow::Continue(())
/// });
///
/// assert_eq!(even_nums_under_50, vec![2, 14, 20]);
/// assert_eq!(first_over_50, ControlFlow::Break(100));
/// ```
#[inline]
pub fn for_each<F, O>(&self, f: F) -> core::ops::ControlFlow<O>
where
F: FnMut(u64) -> core::ops::ControlFlow<O>,
{
#[cfg(feature = "std")]
{
let mut callback_wrapper = crate::callback::CallbackWrapper::new(f);
let (callback, context) = callback_wrapper.callback_and_ctx();
unsafe {
ffi::roaring64_bitmap_iterate(self.raw.as_ptr(), Some(callback), context);
}
match callback_wrapper.result() {
Ok(cf) => cf,
Err(e) => std::panic::resume_unwind(e),
}
}
#[cfg(not(feature = "std"))]
{
self.iter().try_for_each(f)
}
}
/// Returns statistics about the composition of a roaring bitmap64.
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
///
/// let mut bitmap: Bitmap64 = (1..100).collect();
/// let statistics = bitmap.statistics();
///
/// assert_eq!(statistics.n_containers, 1);
/// assert_eq!(statistics.n_array_containers, 1);
/// assert_eq!(statistics.n_run_containers, 0);
/// assert_eq!(statistics.n_bitset_containers, 0);
/// assert_eq!(statistics.n_values_array_containers, 99);
/// assert_eq!(statistics.n_values_run_containers, 0);
/// assert_eq!(statistics.n_values_bitset_containers, 0);
/// assert_eq!(statistics.n_bytes_array_containers, 198);
/// assert_eq!(statistics.n_bytes_run_containers, 0);
/// assert_eq!(statistics.n_bytes_bitset_containers, 0);
/// assert_eq!(statistics.max_value, 99);
/// assert_eq!(statistics.min_value, 1);
/// assert_eq!(statistics.cardinality, 99);
///
/// bitmap.run_optimize();
/// let statistics = bitmap.statistics();
///
/// assert_eq!(statistics.n_containers, 1);
/// assert_eq!(statistics.n_array_containers, 0);
/// assert_eq!(statistics.n_run_containers, 1);
/// assert_eq!(statistics.n_bitset_containers, 0);
/// assert_eq!(statistics.n_values_array_containers, 0);
/// assert_eq!(statistics.n_values_run_containers, 99);
/// assert_eq!(statistics.n_values_bitset_containers, 0);
/// assert_eq!(statistics.n_bytes_array_containers, 0);
/// assert_eq!(statistics.n_bytes_run_containers, 6);
/// assert_eq!(statistics.n_bytes_bitset_containers, 0);
/// assert_eq!(statistics.max_value, 99);
/// assert_eq!(statistics.min_value, 1);
/// assert_eq!(statistics.cardinality, 99);
/// ```
#[inline]
#[doc(alias = "roaring64_bitmap_statistics")]
#[must_use]
pub fn statistics(&self) -> Statistics {
let mut stats = MaybeUninit::<ffi::roaring64_statistics_t>::zeroed();
unsafe {
ffi::roaring64_bitmap_statistics(self.raw.as_ptr(), stats.as_mut_ptr());
stats.assume_init()
}
}
/// Ensure the bitmap is internally valid
///
/// This is useful for development, but is not needed for normal use:
/// bitmaps should _always_ be internally valid.
///
/// # Errors
///
/// Returns an error if the bitmap is not valid, with a description of the problem.
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
///
/// let bitmap = Bitmap64::from_range(0..100);
/// bitmap.internal_validate().unwrap();
/// ```
#[inline]
#[doc(alias = "roaring64_bitmap_internal_validate")]
#[doc(hidden)]
pub fn internal_validate(&self) -> Result<(), &'static str> {
let mut error_str = ptr::null();
let valid =
unsafe { ffi::roaring64_bitmap_internal_validate(self.raw.as_ptr(), &mut error_str) };
if valid {
Ok(())
} else {
if error_str.is_null() {
return Err("Unknown error");
}
let reason = unsafe { core::ffi::CStr::from_ptr(error_str) };
Err(reason.to_str().unwrap_or("Invalid UTF-8 in error message"))
}
}
}
/// Binary Operations
impl Bitmap64 {
/// Return true if self and other contain _any_ common elements
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
/// let bitmap1 = Bitmap64::of(&[1, 2, 3]);
/// let bitmap2 = Bitmap64::of(&[2, 3, 4]);
/// assert!(bitmap1.intersect(&bitmap2));
/// ```
#[inline]
#[must_use]
#[doc(alias = "roaring64_bitmap_intersect")]
pub fn intersect(&self, other: &Self) -> bool {
unsafe { ffi::roaring64_bitmap_intersect(self.raw.as_ptr(), other.raw.as_ptr()) }
}
/// Check if a bitmap has any values set in `range`
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
///
/// let bitmap = Bitmap64::of(&[1, 100, 101, u64::MAX]);
///
/// assert!(bitmap.intersect_with_range(0..10));
/// assert!(!bitmap.intersect_with_range(2..100));
/// assert!(bitmap.intersect_with_range(999..=u64::MAX));
///
/// // Empty ranges
/// assert!(!bitmap.intersect_with_range(100..100));
/// assert!(!bitmap.intersect_with_range(100..0));
/// ```
#[inline]
#[must_use]
#[doc(alias = "roaring64_bitmap_intersect_with_range")]
pub fn intersect_with_range<R: RangeBounds<u64>>(&self, range: R) -> bool {
let Some(exclusive_range) = range_to_exclusive(range) else {
return false;
};
self._intersect_with_range(exclusive_range)
}
#[inline]
fn _intersect_with_range(&self, exclusive_range: ExclusiveRangeRes) -> bool {
let ExclusiveRangeRes {
start,
end,
needs_max,
} = exclusive_range;
if needs_max && self.contains(u64::MAX) {
return true;
}
unsafe { ffi::roaring64_bitmap_intersect_with_range(self.raw.as_ptr(), start, end) }
}
/// Computes the Jaccard index between two bitmaps
///
/// This is also known as the Tanimoto distance, or the Jaccard similarity coefficient
///
/// The Jaccard index is NaN if both bitmaps are empty
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
/// let bitmap1 = Bitmap64::of(&[1, 2, 3]);
/// let bitmap2 = Bitmap64::of(&[2, 3, 4]);
/// assert_eq!(bitmap1.jaccard_index(&bitmap2), 0.5);
///
/// let empty_bitmap = Bitmap64::new();
/// assert!(empty_bitmap.jaccard_index(&empty_bitmap).is_nan());
/// ```
#[inline]
#[must_use]
#[doc(alias = "roaring64_bitmap_jaccard_index")]
pub fn jaccard_index(&self, other: &Self) -> f64 {
unsafe { ffi::roaring64_bitmap_jaccard_index(self.raw.as_ptr(), other.raw.as_ptr()) }
}
/// Computes the intersection between two bitmaps and returns the result
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
/// let bitmap1 = Bitmap64::of(&[1, 2, 3]);
/// let bitmap2 = Bitmap64::of(&[2, 3, 4]);
/// let bitmap3 = bitmap1.and(&bitmap2);
/// assert!(bitmap3.contains(2));
/// ```
#[inline]
#[doc(alias = "roaring64_bitmap_and")]
#[must_use]
pub fn and(&self, other: &Self) -> Self {
unsafe {
Self::take_heap(ffi::roaring64_bitmap_and(
self.raw.as_ptr(),
other.raw.as_ptr(),
))
}
}
/// Computes the size of the intersection between two bitmaps
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
/// let bitmap1 = Bitmap64::of(&[1, 2, 3]);
/// let bitmap2 = Bitmap64::of(&[2, 3, 4]);
/// assert_eq!(bitmap1.and_cardinality(&bitmap2), 2);
/// ```
#[inline]
#[doc(alias = "roaring64_bitmap_and_cardinality")]
#[must_use]
pub fn and_cardinality(&self, other: &Self) -> u64 {
unsafe { ffi::roaring64_bitmap_and_cardinality(self.raw.as_ptr(), other.raw.as_ptr()) }
}
/// Computes the intersection between two bitmaps and stores the result in the current bitmap
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
/// let mut bitmap1 = Bitmap64::of(&[1, 2, 3]);
/// let bitmap2 = Bitmap64::of(&[2, 3, 4]);
/// bitmap1.and_inplace(&bitmap2);
/// assert!(bitmap1.contains(2));
/// assert!(bitmap1.contains(3));
/// assert!(!bitmap1.contains(1));
/// ```
#[inline]
#[doc(alias = "roaring64_bitmap_and_inplace")]
pub fn and_inplace(&mut self, other: &Self) {
unsafe { ffi::roaring64_bitmap_and_inplace(self.raw.as_ptr(), other.raw.as_ptr()) }
}
/// Computes the union between two bitmaps and returns the result
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
/// let bitmap1 = Bitmap64::of(&[1, 2, 3]);
/// let bitmap2 = Bitmap64::of(&[2, 3, 4]);
/// let bitmap3 = bitmap1.or(&bitmap2);
/// assert_eq!(bitmap3.iter().collect::<Vec<_>>(), vec![1, 2, 3, 4]);
/// ```
#[inline]
#[doc(alias = "roaring64_bitmap_or")]
#[must_use]
pub fn or(&self, other: &Self) -> Self {
unsafe {
Self::take_heap(ffi::roaring64_bitmap_or(
self.raw.as_ptr(),
other.raw.as_ptr(),
))
}
}
/// Computes the size of the union between two bitmaps
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
/// let bitmap1 = Bitmap64::of(&[1, 2, 3]);
/// let bitmap2 = Bitmap64::of(&[2, 3, 4]);
/// assert_eq!(bitmap1.or_cardinality(&bitmap2), 4);
/// ```
#[inline]
#[doc(alias = "roaring64_bitmap_or_cardinality")]
#[must_use]
pub fn or_cardinality(&self, other: &Self) -> u64 {
unsafe { ffi::roaring64_bitmap_or_cardinality(self.raw.as_ptr(), other.raw.as_ptr()) }
}
/// Computes the union between two bitmaps and stores the result in the current bitmap
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
/// let mut bitmap1 = Bitmap64::of(&[1, 2, 3]);
/// let bitmap2 = Bitmap64::of(&[2, 3, 4]);
/// bitmap1.or_inplace(&bitmap2);
/// assert_eq!(bitmap1.iter().collect::<Vec<_>>(), vec![1, 2, 3, 4]);
/// ```
#[inline]
#[doc(alias = "roaring64_bitmap_or_inplace")]
pub fn or_inplace(&mut self, other: &Self) {
unsafe { ffi::roaring64_bitmap_or_inplace(self.raw.as_ptr(), other.raw.as_ptr()) }
}
/// Computes the symmetric difference (xor) between two bitmaps and returns the result
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
/// let bitmap1 = Bitmap64::of(&[1, 2, 3]);
/// let bitmap2 = Bitmap64::of(&[2, 3, 4]);
/// let bitmap3 = bitmap1.xor(&bitmap2);
/// assert_eq!(bitmap3.iter().collect::<Vec<_>>(), vec![1, 4]);
/// ```
#[inline]
#[doc(alias = "roaring64_bitmap_xor")]
#[must_use]
pub fn xor(&self, other: &Self) -> Self {
unsafe {
Self::take_heap(ffi::roaring64_bitmap_xor(
self.raw.as_ptr(),
other.raw.as_ptr(),
))
}
}
/// Computes the size of the symmetric difference (xor) between two bitmaps
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
/// let bitmap1 = Bitmap64::of(&[1, 2, 3]);
/// let bitmap2 = Bitmap64::of(&[2, 3, 4]);
/// assert_eq!(bitmap1.xor_cardinality(&bitmap2), 2);
/// ```
#[inline]
#[doc(alias = "roaring64_bitmap_xor_cardinality")]
#[must_use]
pub fn xor_cardinality(&self, other: &Self) -> u64 {
unsafe { ffi::roaring64_bitmap_xor_cardinality(self.raw.as_ptr(), other.raw.as_ptr()) }
}
/// Computes the symmetric difference (xor) between two bitmaps and stores the result in the current bitmap
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
/// let mut bitmap1 = Bitmap64::of(&[1, 2, 3]);
/// let bitmap2 = Bitmap64::of(&[2, 3, 4]);
/// bitmap1.xor_inplace(&bitmap2);
/// assert_eq!(bitmap1.iter().collect::<Vec<_>>(), vec![1, 4]);
/// ```
#[inline]
#[doc(alias = "roaring64_bitmap_xor_inplace")]
pub fn xor_inplace(&mut self, other: &Self) {
unsafe { ffi::roaring64_bitmap_xor_inplace(self.raw.as_ptr(), other.raw.as_ptr()) }
}
/// Computes the difference between two bitmaps and returns the result
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
/// let bitmap1 = Bitmap64::of(&[1, 2, 3]);
/// let bitmap2 = Bitmap64::of(&[2, 3, 4]);
/// let bitmap3 = bitmap1.andnot(&bitmap2);
/// assert_eq!(bitmap3.iter().collect::<Vec<_>>(), vec![1]);
/// ```
#[inline]
#[doc(alias = "roaring64_bitmap_andnot")]
#[must_use]
pub fn andnot(&self, other: &Self) -> Self {
unsafe {
Self::take_heap(ffi::roaring64_bitmap_andnot(
self.raw.as_ptr(),
other.raw.as_ptr(),
))
}
}
/// Computes the size of the difference between two bitmaps
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
/// let bitmap1 = Bitmap64::of(&[1, 2, 3]);
/// let bitmap2 = Bitmap64::of(&[2, 3, 4]);
/// assert_eq!(bitmap1.andnot_cardinality(&bitmap2), 1);
/// ```
#[inline]
#[doc(alias = "roaring64_bitmap_andnot_cardinality")]
#[must_use]
pub fn andnot_cardinality(&self, other: &Self) -> u64 {
unsafe { ffi::roaring64_bitmap_andnot_cardinality(self.raw.as_ptr(), other.raw.as_ptr()) }
}
/// Computes the difference between two bitmaps and stores the result in the current bitmap
///
/// # Examples
///
/// ```
/// use croaring::Bitmap64;
/// let mut bitmap1 = Bitmap64::of(&[1, 2, 3]);
/// let bitmap2 = Bitmap64::of(&[2, 3, 4]);
/// bitmap1.andnot_inplace(&bitmap2);
/// assert_eq!(bitmap1.iter().collect::<Vec<_>>(), vec![1]);
/// ```
#[inline]
#[doc(alias = "roaring64_bitmap_andnot_inplace")]
pub fn andnot_inplace(&mut self, other: &Self) {
unsafe { ffi::roaring64_bitmap_andnot_inplace(self.raw.as_ptr(), other.raw.as_ptr()) }
}
}
/// Returns start, end, and whether the range also includes u64::MAX
struct ExclusiveRangeRes {
start: u64,
end: u64,
needs_max: bool,
}
fn range_to_exclusive<R: RangeBounds<u64>>(range: R) -> Option<ExclusiveRangeRes> {
let (start, inclusive_end) = range_to_inclusive(range);
if inclusive_end < start {
return None;
}
let (end, needs_max) = match inclusive_end.checked_add(1) {
Some(i) => (i, false),
None => (u64::MAX, true),
};
Some(ExclusiveRangeRes {
start,
end,
needs_max,
})
}
fn range_to_inclusive<R: RangeBounds<u64>>(range: R) -> (u64, u64) {
let start = match range.start_bound() {
Bound::Included(&i) => i,
Bound::Excluded(&i) => match i.checked_add(1) {
Some(i) => i,
None => return (1, 0),
},
Bound::Unbounded => 0,
};
let end = match range.end_bound() {
Bound::Included(&i) => i,
Bound::Excluded(&i) => match i.checked_sub(1) {
Some(i) => i,
None => return (1, 0),
},
Bound::Unbounded => u64::MAX,
};
(start, end)
}