clippy

src/atrule/function.rs

@@ -69,19 +69,18 @@ impl Function {
             match stmt {
                 Stmt::AtRule(AtRule::Return(toks)) => {
                     return Value::from_tokens(
-                        &mut toks.clone().into_iter().peekable(),
+                        &mut toks.into_iter().peekable(),
                         &self.scope,
                         super_selector,
                     )
                 }
                 Stmt::AtRule(AtRule::For(..)) => todo!("@for in function"),
                 Stmt::AtRule(AtRule::If(i)) => {
-                    match self.call(
+                    if let Ok(v) = self.call(
                         super_selector,
                         i.eval(&mut self.scope.clone(), super_selector)?,
                     ) {
-                        Ok(v) => return Ok(v),
-                        Err(..) => {}
+                        return Ok(v);
                     }
                 }
                 _ => return Err("This at-rule is not allowed here.".into()),

src/atrule/mod.rs

@@ -132,7 +132,7 @@ impl AtRule {
                                 'h' => {
                                     let r = toks.next().unwrap();
                                     these_toks.push(r);
-                                    if &r.kind != &'r' {
+                                    if r.kind != 'r' {
                                         from_toks.extend(these_toks);
                                         continue;
                                     }

src/builtin/map.rs

@@ -15,7 +15,7 @@ pub(crate) fn register(f: &mut HashMap<String, Builtin>) {
                 Value::List(v, ..) if v.is_empty() => SassMap::new(),
                 v => return Err(format!("$map: {} is not a map.", v).into()),
             };
-            Ok(map.get(key)?.unwrap_or(Value::Null).clone())
+            Ok(map.get(&key)?.unwrap_or(Value::Null))
         }),
     );
     f.insert(
@@ -28,7 +28,7 @@ pub(crate) fn register(f: &mut HashMap<String, Builtin>) {
                 Value::List(v, ..) if v.is_empty() => SassMap::new(),
                 v => return Err(format!("$map: {} is not a map.", v).into()),
             };
-            Ok(Value::bool(map.get(key)?.is_some()))
+            Ok(Value::bool(map.get(&key)?.is_some()))
         }),
     );
     f.insert(

src/selector.rs

@@ -201,7 +201,7 @@ impl<'a> SelectorParser<'a> {
                     let s = format!(
                         "{}{}",
                         v,
-                        eat_ident(tokens, &self.scope, &self.super_selector)?
+                        eat_ident(tokens, self.scope, self.super_selector)?
                     );
                     if let Some(Token { kind: '(', .. }) = tokens.peek() {
                         tokens.next();
@@ -225,7 +225,7 @@ impl<'a> SelectorParser<'a> {
                     }
                 }
                 ':' => {
-                    let s = eat_ident(tokens, &self.scope, &self.super_selector)?;
+                    let s = eat_ident(tokens, self.scope, self.super_selector)?;
                     self.selectors.push(SelectorKind::PseudoElement(s))
                 }
                 _ => return Err("Expected identifier.".into()),

src/style.rs

@@ -192,7 +192,7 @@ impl<'a> StyleParser<'a> {
         mut super_property: String,
     ) -> SassResult<String> {
         devour_whitespace(toks);
-        let property = eat_ident(toks, &self.scope, &self.super_selector)?;
+        let property = eat_ident(toks, self.scope, self.super_selector)?;
         devour_whitespace_or_comment(toks)?;
         if toks.peek().is_some() && toks.peek().unwrap().kind == ':' {
             toks.next();

src/utils.rs

@@ -515,7 +515,7 @@ pub(crate) fn eat_number<I: Iterator<Item = Token>>(toks: &mut Peekable<I>) -> S
 ///
 /// The newline is consumed
 pub(crate) fn read_until_newline<I: Iterator<Item = Token>>(toks: &mut Peekable<I>) {
-    while let Some(tok) = toks.next() {
+    for tok in toks {
         if tok.kind == '\n' {
             break;
         }
@@ -534,11 +534,9 @@ pub(crate) fn eat_comment<I: Iterator<Item = Token>>(
 ) -> SassResult<String> {
     let mut comment = String::new();
     while let Some(tok) = toks.next() {
-        if tok.kind == '*' {
-            if toks.peek().unwrap().kind == '/' {
-                toks.next();
-                break;
-            }
+        if tok.kind == '*' && toks.peek().unwrap().kind == '/' {
+            toks.next();
+            break;
         }
         comment.push(tok.kind);
     }

src/value/map.rs

@@ -8,11 +8,11 @@ use crate::error::SassResult;
 pub(crate) struct SassMap(Vec<(Value, Value)>);
 
 impl SassMap {
-    pub fn new() -> SassMap {
+    pub const fn new() -> SassMap {
         SassMap(Vec::new())
     }
 
-    pub fn get(self, key: Value) -> SassResult<Option<Value>> {
+    pub fn get(self, key: &Value) -> SassResult<Option<Value>> {
         for (k, v) in self.0 {
             if k.equals(key.clone())? {
                 return Ok(Some(v));
@@ -31,7 +31,7 @@ impl SassMap {
     }
 
     pub fn merge(&mut self, other: SassMap) {
-        for (key, value) in other.into_iter() {
+        for (key, value) in other {
             self.insert(key, value);
         }
     }

src/value/mod.rs

@@ -228,7 +228,7 @@ impl Value {
         Ok(match self {
             Self::Dimension(num, ref unit) => match other {
                 Self::Dimension(num2, unit2) => {
-                    if !unit.comparable(&unit2) {
+                    if !unit.comparable(unit2) {
                         return Err(format!("Incompatible units {} and {}.", unit2, unit).into());
                     }
                     if unit == unit2 {

src/value/ops.rs

@@ -170,7 +170,7 @@ impl Sub for Value {
                     format!("{}-{}{}{}", self, q.normalize(), s, q.normalize()),
                     QuoteKind::None,
                 ),
-                Self::Paren(..) => (self + other.eval()?)?,
+                Self::Paren(..) => (self - other.eval()?)?,
                 _ => Value::Ident(format!("{}-{}", self, other), QuoteKind::None),
             },
             _ => match other {

src/value/parse.rs

@@ -186,7 +186,7 @@ impl Value {
                     let right = Self::from_tokens(toks, scope, super_selector)?;
                     Ok(Value::BinaryOp(Box::new(left), Op::Equal, Box::new(right)))
                 } else {
-                    return Err("expected \"=\".".into());
+                    Err("expected \"=\".".into())
                 }
             }
             q @ '>' | q @ '<' => {
@@ -231,7 +231,7 @@ impl Value {
                         Brackets::None,
                     ))
                 } else {
-                    return Err("Expected \"important\".".into());
+                    Err("Expected \"important\".".into())
                 }
             }
             '-' => {

tests/map.rs

@@ -113,11 +113,9 @@ test!(
 );
 error!(
     map_get_one_arg,
-    "a {\n  color: map-get(1);\n}\n",
-    "Error: Missing argument $key."
+    "a {\n  color: map-get(1);\n}\n", "Error: Missing argument $key."
 );
 error!(
     map_has_key_one_arg,
-    "a {\n  color: map-has-key(1);\n}\n",
-    "Error: Missing argument $key."
+    "a {\n  color: map-has-key(1);\n}\n", "Error: Missing argument $key."
 );