perf: Reduce the size of PrimitiveTypesBitMapIterator

jsonschema/src/primitive_type.rs

@@ -118,7 +118,7 @@ impl IntoIterator for PrimitiveTypesBitMap {
  type IntoIter = PrimitiveTypesBitMapIterator;
  fn into_iter(self) -> Self::IntoIter {
  PrimitiveTypesBitMapIterator {
- range: 0..7,
+ idx: 0,
  bit_map: self,
  }
  }
@@ -137,23 +137,21 @@ impl From<Vec<PrimitiveType>> for PrimitiveTypesBitMap {
 /// Iterator over all `PrimitiveType` present in a `PrimitiveTypesBitMap`
 #[derive(Debug)]
 pub struct PrimitiveTypesBitMapIterator {
- range: std::ops::Range<u8>,
+ idx: u8,
  bit_map: PrimitiveTypesBitMap,
 }
 impl Iterator for PrimitiveTypesBitMapIterator {
  type Item = PrimitiveType;
  #[allow(clippy::integer_arithmetic)]
  fn next(&mut self) -> Option<Self::Item> {
- loop {
- if let Some(value) = self.range.next() {
- let bit_value = 1 << value;
- if self.bit_map.inner & bit_value != 0 {
- return Some(bit_map_representation_primitive_type(bit_value));
- }
- } else {
- return None;
+ while self.idx <= 7 {
+ let bit_value = 1 << self.idx;
+ self.idx += 1;
+ if self.bit_map.inner & bit_value != 0 {
+ return Some(bit_map_representation_primitive_type(bit_value));
  }
  }
+ None
  }
 }