Merge pull request #44 from meilisearch/clippy

Fix some clippy warnings

src/mdfs.rs

@@ -25,7 +25,7 @@ impl<'a> Mdfs<'a> {
     ) -> Mdfs<'a>
     {
         // Compute the number of pairs (windows) we have for this list of words.
-        let mana = words.len().checked_sub(1).unwrap_or(0) as u32;
+        let mana = words.len().saturating_sub(1) as u32;
         let max_mana = mana * 8;
         Mdfs { index, rtxn, words, union_cache: HashMap::new(), candidates, mana, max_mana }
     }
@@ -59,7 +59,7 @@ impl<'a> Iterator for Mdfs<'a> {
                 Ok(()) => {
                     // We always increase the mana for the next loop.
                     let proximity = self.mana;
-                    self.mana = self.mana + 1;
+                    self.mana += 1;
 
                     // If no documents were found we must not return and continue
                     // the search with more mana.

src/search/facet/mod.rs

@@ -224,7 +224,7 @@ impl FacetCondition {
             FacetType::String => {
                 Err(PestError::<Rule>::new_from_span(
                     ErrorVariant::CustomError {
-                        message: format!("invalid operator on a faceted string"),
+                        message: "invalid operator on a faceted string".to_string(),
                     },
                     item_span,
                 ).into())
@@ -264,7 +264,7 @@ impl FacetCondition {
             FacetType::String => {
                 Err(PestError::<Rule>::new_from_span(
                     ErrorVariant::CustomError {
-                        message: format!("invalid operator on a faceted string"),
+                        message: "invalid operator on a faceted string".to_string(),
                     },
                     item_span,
                 ).into())
@@ -288,7 +288,7 @@ impl FacetCondition {
             FacetType::String => {
                 Err(PestError::<Rule>::new_from_span(
                     ErrorVariant::CustomError {
-                        message: format!("invalid operator on a faceted string"),
+                        message: "invalid operator on a faceted string".to_string(),
                     },
                     item_span,
                 ).into())
@@ -312,7 +312,7 @@ impl FacetCondition {
             FacetType::String => {
                 Err(PestError::<Rule>::new_from_span(
                     ErrorVariant::CustomError {
-                        message: format!("invalid operator on a faceted string"),
+                        message: "invalid operator on a faceted string".to_string(),
                     },
                     item_span,
                 ).into())
@@ -336,7 +336,7 @@ impl FacetCondition {
             FacetType::String => {
                 Err(PestError::<Rule>::new_from_span(
                     ErrorVariant::CustomError {
-                        message: format!("invalid operator on a faceted string"),
+                        message: "invalid operator on a faceted string".to_string(),
                     },
                     item_span,
                 ).into())
@@ -508,7 +508,7 @@ impl FacetCondition {
                 let all_documents_ids = index.faceted_documents_ids(rtxn, field_id)?;
                 let op = FacetStringOperator::Equal(string.clone());
                 let docids = Self::evaluate_string_operator(rtxn, index, db, field_id, &op)?;
-                return Ok(all_documents_ids - docids);
+                Ok(all_documents_ids - docids)
             },
         }
     }

src/subcommand/search.rs

@@ -49,7 +49,7 @@ pub fn run(opt: Opt) -> anyhow::Result<()> {
 
     let stdin = io::stdin();
     let lines = match opt.query {
-        Some(query) => Box::new(once(Ok(query.to_string()))),
+        Some(query) => Box::new(once(Ok(query))),
         None => Box::new(stdin.lock().lines()) as Box<dyn Iterator<Item = _>>,
     };
 

src/tokenizer.rs

@@ -66,14 +66,13 @@ impl CharCategory {
     fn new(c: char) -> Self {
         if c.is_alphanumeric() {
             if is_chinese(c) { Chinese } else { Alphanumeric }
-        } else {
-            if c.is_whitespace() { Space } else { Other }
-        }
+        } else if c.is_whitespace() { Space } else { Other }
     }
 }
 
 fn is_chinese(c: char) -> bool {
-    match u32::from(c) {
+    matches!(
+        u32::from(c),
           0x4E00..=0x9FEF
         | 0x3400..=0x4DBF
         | 0x20000..=0x2A6DF
@@ -81,9 +80,8 @@ fn is_chinese(c: char) -> bool {
         | 0x2B740..=0x2B81F
         | 0x2B820..=0x2CEAF
         | 0x2CEB0..=0x2EBEF
-        | 0x3007..=0x3007 => true,
-        _ => false,
-    }
+        | 0x3007..=0x3007
+    )
 }
 
 /// Find the longest key that is prefix of the given value.

src/update/index_documents/mod.rs

@@ -273,9 +273,9 @@ impl<'t, 'u, 'i, 'a> IndexDocuments<'t, 'u, 'i, 'a> {
         };
 
         let output = match self.update_format {
-            UpdateFormat::Csv => transform.from_csv(reader, &progress_callback)?,
-            UpdateFormat::Json => transform.from_json(reader, &progress_callback)?,
-            UpdateFormat::JsonStream => transform.from_json_stream(reader, &progress_callback)?,
+            UpdateFormat::Csv => transform.output_from_csv(reader, &progress_callback)?,
+            UpdateFormat::Json => transform.output_from_json(reader, &progress_callback)?,
+            UpdateFormat::JsonStream => transform.output_from_json_stream(reader, &progress_callback)?,
         };
 
         info!("Update transformed in {:.02?}", before_transform.elapsed());

src/update/index_documents/store.rs

@@ -440,7 +440,7 @@ impl Store {
             }
 
             // Compute the document id of the next document.
-            count = count + 1;
+            count += 1;
         }
 
         progress_callback(UpdateIndexingStep::IndexDocuments {
@@ -527,12 +527,10 @@ fn compute_words_pair_proximities(
             let prox = u8::try_from(prox).unwrap();
             // We don't care about a word that appear at the
             // same position or too far from the other.
-            if prox >= 1 && prox <= 7 {
-                if min_prox.map_or(true, |mp| prox < mp) {
+            if prox >= 1 && prox <= 7 && min_prox.map_or(true, |mp| prox < mp) {
                 min_prox = Some(prox)
             }
         }
-        }
 
         if let Some(min_prox) = min_prox {
             words_pair_proximities.insert((w1.as_str(), w2.as_str()), min_prox);
@@ -569,18 +567,28 @@ fn parse_facet_value(ftype: FacetType, value: &Value) -> anyhow::Result<SmallVec
     {
         match value {
             Value::Null => Ok(()),
-            Value::Bool(b) => Ok(output.push(Integer(*b as i64))),
+            Value::Bool(b) => {
+                output.push(Integer(*b as i64));
+                Ok(())
+            },
             Value::Number(number) => match ftype {
                 FacetType::String => {
                     let string = SmallString32::from(number.to_string());
-                    Ok(output.push(String(string)))
+                    output.push(String(string));
+                    Ok(())
                 },
                 FacetType::Float => match number.as_f64() {
-                    Some(float) => Ok(output.push(Float(OrderedFloat(float)))),
+                    Some(float) => {
+                        output.push(Float(OrderedFloat(float)));
+                        Ok(())
+                    },
                     None => bail!("invalid facet type, expecting {} found integer", ftype),
                 },
                 FacetType::Integer => match number.as_i64() {
-                    Some(integer) => Ok(output.push(Integer(integer))),
+                    Some(integer) => {
+                        output.push(Integer(integer));
+                        Ok(())
+                    },
                     None => if number.is_f64() {
                         bail!("invalid facet type, expecting {} found float", ftype)
                     } else {
@@ -594,14 +602,21 @@ fn parse_facet_value(ftype: FacetType, value: &Value) -> anyhow::Result<SmallVec
                 match ftype {
                     FacetType::String => {
                         let string = SmallString32::from(string);
-                        Ok(output.push(String(string)))
+                        output.push(String(string));
+                        Ok(())
                     },
                     FacetType::Float => match string.parse() {
-                        Ok(float) => Ok(output.push(Float(OrderedFloat(float)))),
+                        Ok(float) => {
+                            output.push(Float(OrderedFloat(float)));
+                            Ok(())
+                        },
                         Err(_err) => bail!("invalid facet type, expecting {} found string", ftype),
                     },
                     FacetType::Integer => match string.parse() {
-                        Ok(integer) => Ok(output.push(Integer(integer))),
+                        Ok(integer) => {
+                            output.push(Integer(integer));
+                            Ok(())
+                        },
                         Err(_err) => bail!("invalid facet type, expecting {} found string", ftype),
                     },
                 }

src/update/index_documents/transform.rs

@@ -1,5 +1,4 @@
 use std::borrow::Cow;
-use std::convert::TryFrom;
 use std::fs::File;
 use std::io::{Read, Seek, SeekFrom};
 use std::iter::Peekable;
@@ -46,23 +45,23 @@ pub struct Transform<'t, 'i> {
 }
 
 impl Transform<'_, '_> {
-    pub fn from_json<R, F>(self, reader: R, progress_callback: F) -> anyhow::Result<TransformOutput>
+    pub fn output_from_json<R, F>(self, reader: R, progress_callback: F) -> anyhow::Result<TransformOutput>
     where
         R: Read,
         F: Fn(UpdateIndexingStep) + Sync,
     {
-        self.from_generic_json(reader, false, progress_callback)
+        self.output_from_generic_json(reader, false, progress_callback)
     }
 
-    pub fn from_json_stream<R, F>(self, reader: R, progress_callback: F) -> anyhow::Result<TransformOutput>
+    pub fn output_from_json_stream<R, F>(self, reader: R, progress_callback: F) -> anyhow::Result<TransformOutput>
     where
         R: Read,
         F: Fn(UpdateIndexingStep) + Sync,
     {
-        self.from_generic_json(reader, true, progress_callback)
+        self.output_from_generic_json(reader, true, progress_callback)
     }
 
-    fn from_generic_json<R, F>(
+    fn output_from_generic_json<R, F>(
         self,
         reader: R,
         is_stream: bool,
@@ -221,7 +220,7 @@ impl Transform<'_, '_> {
 
         // Now that we have a valid sorter that contains the user id and the obkv we
         // give it to the last transforming function which returns the TransformOutput.
-        self.from_sorter(
+        self.output_from_sorter(
             sorter,
             primary_key,
             fields_ids_map,
@@ -231,7 +230,7 @@ impl Transform<'_, '_> {
         )
     }
 
-    pub fn from_csv<R, F>(self, reader: R, progress_callback: F) -> anyhow::Result<TransformOutput>
+    pub fn output_from_csv<R, F>(self, reader: R, progress_callback: F) -> anyhow::Result<TransformOutput>
     where
         R: Read,
         F: Fn(UpdateIndexingStep) + Sync,
@@ -350,7 +349,7 @@ impl Transform<'_, '_> {
 
         // Now that we have a valid sorter that contains the user id and the obkv we
         // give it to the last transforming function which returns the TransformOutput.
-        self.from_sorter(
+        self.output_from_sorter(
             sorter,
             primary_key_field_id,
             fields_ids_map,
@@ -363,7 +362,7 @@ impl Transform<'_, '_> {
     /// Generate the `TransformOutput` based on the given sorter that can be generated from any
     /// format like CSV, JSON or JSON stream. This sorter must contain a key that is the document
     /// id for the user side and the value must be an obkv where keys are valid fields ids.
-    fn from_sorter<F>(
+    fn output_from_sorter<F>(
         self,
         sorter: grenad::Sorter<MergeFn>,
         primary_key: u8,
@@ -408,7 +407,6 @@ impl Transform<'_, '_> {
                 Some(docid) => {
                     // If we find the user id in the current external documents ids map
                     // we use it and insert it in the list of replaced documents.
-                    let docid = u32::try_from(docid).expect("valid document id");
                     replaced_documents_ids.insert(docid);
 
                     // Depending on the update indexing method we will merge

src/update/update_builder.rs

@@ -134,3 +134,9 @@ impl<'a> UpdateBuilder<'a> {
         builder
     }
 }
+
+impl Default for UpdateBuilder<'_> {
+    fn default() -> Self {
+        Self::new()
+    }
+}