Fix pull request reviews

Update milli/src/fields_ids_map.rs
Update milli/src/search/criteria/exactness.rs
Update milli/src/search/criteria/mod.rs

milli/src/fields_ids_map.rs

@@ -66,12 +66,12 @@ impl FieldsIdsMap {
         self.ids_names.iter().map(|(id, name)| (*id, name.as_str()))
     }
 
-    /// Iterate over the ids in the ids order.
+    /// Iterate over the ids in the order of the ids.
     pub fn ids<'a>(&'a self) -> impl Iterator<Item=FieldId> + 'a {
         self.ids_names.keys().copied()
     }
 
-    /// Iterate over the names in the ids order.
+    /// Iterate over the names in the order of the ids.
     pub fn names(&self) -> impl Iterator<Item=&str> {
         self.ids_names.values().map(AsRef::as_ref)
     }

milli/src/search/criteria/exactness.rs

@@ -51,7 +51,7 @@ impl<'t> Criterion for Exactness<'t> {
         }
 
         loop {
-            debug!("Exactness for query {:?} at state {:?}", self.query, self.state);
+            debug!("Exactness at state {:?}", self.state);
 
             match self.state.as_mut() {
                 Some(state) if state.is_empty() => {
@@ -296,27 +296,12 @@ fn attribute_start_with_docids(ctx: &dyn Context, attribute_id: u32, query: &[Ex
     Ok(attribute_candidates_array)
 }
 
-fn intersection_of(mut to_intersect: Vec<&RoaringBitmap>) -> RoaringBitmap {
-    match to_intersect.len() {
-        0 => RoaringBitmap::new(),
-        1 => to_intersect[0].clone(),
-        2 => to_intersect[0] & to_intersect[1],
-        _ => {
-            to_intersect.sort_unstable_by(|a, b| a.len().cmp(&b.len()).reverse());
-
-            match to_intersect.pop() {
-                None => RoaringBitmap::new(),
-                Some(candidates)  => {
-                    let mut candidates = candidates.clone();
-                    while let Some(bitmap) = to_intersect.pop() {
-                        if candidates.is_empty() { break; }
-                        candidates &= bitmap;
-                    }
-
-                    candidates
-                },
-            }
-        }
+fn intersection_of(mut rbs: Vec<&RoaringBitmap>) -> RoaringBitmap {
+    rbs.sort_unstable_by_key(|rb| rb.len());
+    let mut iter = rbs.into_iter();
+    match iter.next() {
+        Some(first) => iter.fold(first.clone(), |acc, rb| acc & rb),
+        None => RoaringBitmap::new(),
     }
 }
 

milli/src/search/criteria/mod.rs

@@ -7,7 +7,7 @@ use roaring::RoaringBitmap;
 use crate::{FieldId, TreeLevel, search::{word_derivations, WordDerivationsCache}};
 use crate::{Index, DocumentId};
 
-use super::query_tree::{Operation, PrimitiveQuery, PrimitiveQueryPart, Query, QueryKind};
+use super::query_tree::{Operation, PrimitiveQueryPart, Query, QueryKind};
 use self::asc_desc::AscDesc;
 use self::attribute::Attribute;
 use self::exactness::Exactness;
@@ -188,7 +188,7 @@ impl<'c> Context<'c> for CriteriaBuilder<'c> {
         }
     }
 
-    fn field_id_len_docids(&self, field_id: FieldId, len: u32) -> heed::Result<Option<RoaringBitmap>> {
+    fn field_id_len_docids(&self, _field_id: FieldId, _len: u32) -> heed::Result<Option<RoaringBitmap>> {
         Ok(None)
     }
 
@@ -226,7 +226,6 @@ impl<'t> CriteriaBuilder<'t> {
                 Name::Exactness => Box::new(Exactness::new(self, criterion, &primitive_query)?),
                 Name::Asc(field) => Box::new(AscDesc::asc(&self.index, &self.rtxn, criterion, field)?),
                 Name::Desc(field) => Box::new(AscDesc::desc(&self.index, &self.rtxn, criterion, field)?),
-                _otherwise => criterion,
             };
         }
 
@@ -486,7 +485,7 @@ pub mod test {
             todo!()
         }
 
-        fn synonyms(&self, word: &str) -> heed::Result<Option<Vec<Vec<String>>>> {
+        fn synonyms(&self, _word: &str) -> heed::Result<Option<Vec<Vec<String>>>> {
             todo!()
         }
 
@@ -494,11 +493,11 @@ pub mod test {
             todo!()
         }
 
-        fn word_level_position_docids(&self, word: &str, level: TreeLevel, left: u32, right: u32) -> Result<Option<RoaringBitmap>, heed::Error> {
+        fn word_level_position_docids(&self, _word: &str, _level: TreeLevel, _left: u32, _right: u32) -> Result<Option<RoaringBitmap>, heed::Error> {
             todo!()
         }
 
-        fn field_id_len_docids(&self, field_id: FieldId, len: u32) -> heed::Result<Option<RoaringBitmap>> {
+        fn field_id_len_docids(&self, _field_id: FieldId, _len: u32) -> heed::Result<Option<RoaringBitmap>> {
             todo!()
         }
     }