feat: Introduce the Criterion::name to allow better debugging

meilidb-core/src/criterion/document_id.rs

@@ -9,4 +9,8 @@ impl Criterion for DocumentId {
     fn evaluate(&self, lhs: &RawDocument, rhs: &RawDocument) -> Ordering {
         lhs.id.cmp(&rhs.id)
     }
+
+    fn name(&self) -> &'static str {
+        "DocumentId"
+    }
 }

meilidb-core/src/criterion/exact.rs

@@ -36,4 +36,8 @@ impl Criterion for Exact {
 
         lhs.cmp(&rhs).reverse()
     }
+
+    fn name(&self) -> &'static str {
+        "Exact"
+    }
 }

meilidb-core/src/criterion/mod.rs

@@ -22,6 +22,9 @@ pub use self::{
 pub trait Criterion: Send + Sync {
     fn evaluate(&self, lhs: &RawDocument, rhs: &RawDocument) -> Ordering;
 
+    #[inline]
+    fn name(&self) -> &'static str;
+
     #[inline]
     fn eq(&self, lhs: &RawDocument, rhs: &RawDocument) -> bool {
         self.evaluate(lhs, rhs) == Ordering::Equal
@@ -33,6 +36,10 @@ impl<'a, T: Criterion + ?Sized + Send + Sync> Criterion for &'a T {
         (**self).evaluate(lhs, rhs)
     }
 
+    fn name(&self) -> &'static str {
+        (**self).name()
+    }
+
     fn eq(&self, lhs: &RawDocument, rhs: &RawDocument) -> bool {
         (**self).eq(lhs, rhs)
     }
@@ -43,6 +50,10 @@ impl<T: Criterion + ?Sized> Criterion for Box<T> {
         (**self).evaluate(lhs, rhs)
     }
 
+    fn name(&self) -> &'static str {
+        (**self).name()
+    }
+
     fn eq(&self, lhs: &RawDocument, rhs: &RawDocument) -> bool {
         (**self).eq(lhs, rhs)
     }

meilidb-core/src/criterion/number_of_words.rs

@@ -24,4 +24,8 @@ impl Criterion for NumberOfWords {
 
         lhs.cmp(&rhs).reverse()
     }
+
+    fn name(&self) -> &'static str {
+        "NumberOfWords"
+    }
 }

meilidb-core/src/criterion/sum_of_typos.rs

@@ -53,6 +53,10 @@ impl Criterion for SumOfTypos {
 
         lhs.cmp(&rhs).reverse()
     }
+
+    fn name(&self) -> &'static str {
+        "SumOfTypos"
+    }
 }
 
 #[cfg(test)]

meilidb-core/src/criterion/sum_of_words_attribute.rs

@@ -35,4 +35,8 @@ impl Criterion for SumOfWordsAttribute {
 
         lhs.cmp(&rhs)
     }
+
+    fn name(&self) -> &'static str {
+        "SumOfWordsAttribute"
+    }
 }

meilidb-core/src/criterion/sum_of_words_position.rs

@@ -35,4 +35,8 @@ impl Criterion for SumOfWordsPosition {
 
         lhs.cmp(&rhs)
     }
+
+    fn name(&self) -> &'static str {
+        "SumOfWordsPosition"
+    }
 }

meilidb-core/src/criterion/words_proximity.rs

@@ -98,6 +98,10 @@ impl Criterion for WordsProximity {
 
         lhs.cmp(&rhs)
     }
+
+    fn name(&self) -> &'static str {
+        "WordsProximity"
+    }
 }
 
 #[cfg(test)]