Apply clippy suggestions and fixes

src/abstract_tree/assignment.rs

@@ -33,12 +33,10 @@ impl AbstractTree for Assignment {
             Some(TypeDefinition::from_syntax_node(
                 source, type_node, context,
             )?)
-        } else {
+        } else if let Some((_, r#type)) = context.variables()?.get(identifier.inner()) {
-            if let Some((_, r#type)) = context.variables()?.get(identifier.inner()) {
             Some(TypeDefinition::new(r#type.clone()))
         } else {
             None
-            }
         };
 
         let operator_node = node.child(child_count - 2).unwrap().child(0).unwrap();

src/abstract_tree/block.rs

@@ -59,10 +59,10 @@ impl AbstractTree for Block {
                 .enumerate()
                 .find_map_first(|(index, statement)| {
                     if let Statement::Return(expression) = statement {
-                        return Some(expression.run(source, &mut context.clone()));
+                        return Some(expression.run(source, context));
                     }
 
-                    let result = statement.run(source, &mut context.clone());
+                    let result = statement.run(source, context);
 
                     if result.is_err() {
                         Some(result)

src/abstract_tree/for.rs

@@ -55,11 +55,11 @@ impl AbstractTree for For {
 
         if self.is_async {
             values.par_iter().try_for_each(|value| {
-                let mut iter_context = Map::clone_from(context)?;
+                let iter_context = Map::clone_from(context)?;
 
                 iter_context.set(key.clone(), value.clone(), None)?;
 
-                self.block.run(source, &mut iter_context).map(|_value| ())
+                self.block.run(source, &iter_context).map(|_value| ())
             })?;
         } else {
             let loop_context = Map::clone_from(context)?;
@@ -67,7 +67,7 @@ impl AbstractTree for For {
             for value in values.iter() {
                 loop_context.set(key.clone(), value.clone(), None)?;
 
-                self.block.run(source, &mut loop_context.clone())?;
+                self.block.run(source, &loop_context)?;
             }
         }
 

src/abstract_tree/index_assignment.rs

@@ -51,7 +51,7 @@ impl AbstractTree for IndexAssignment {
 
     fn run(&self, source: &str, context: &Map) -> Result<Value> {
         let index_collection = self.index.collection.run(source, context)?;
-        let index_context = index_collection.as_map().unwrap_or(&context);
+        let index_context = index_collection.as_map().unwrap_or(context);
         let index_key = if let crate::Expression::Identifier(identifier) = &self.index.index {
             identifier.inner()
         } else {
@@ -60,7 +60,7 @@ impl AbstractTree for IndexAssignment {
             ));
         };
 
-        let value = self.statement.run(source, &mut context.clone())?;
+        let value = self.statement.run(source, context)?;
 
         let new_value = match self.operator {
             AssignmentOperator::PlusEqual => {

src/abstract_tree/type_definition.rs

@@ -99,7 +99,7 @@ impl Type {
             }
             (Type::Option(_), Type::None) | (Type::None, Type::Option(_)) => Ok(()),
             (Type::List(self_item_type), Type::List(other_item_type)) => {
-                if self_item_type.check(&other_item_type).is_err() {
+                if self_item_type.check(other_item_type).is_err() {
                     Err(Error::TypeCheck {
                         expected: self.clone(),
                         actual: other.clone(),
@@ -123,7 +123,7 @@ impl Type {
                     .zip(other_parameter_types.iter());
 
                 for (self_parameter_type, other_parameter_type) in parameter_type_pairs {
-                    if self_parameter_type.check(&other_parameter_type).is_err() {
+                    if self_parameter_type.check(other_parameter_type).is_err() {
                         return Err(Error::TypeCheck {
                             expected: self.clone(),
                             actual: other.clone(),
@@ -149,7 +149,7 @@ impl Type {
 }
 
 impl AbstractTree for Type {
-    fn from_syntax_node(source: &str, node: Node, context: &Map) -> Result<Self> {
+    fn from_syntax_node(source: &str, node: Node, _context: &Map) -> Result<Self> {
         Error::expect_syntax_node(source, "type", node)?;
 
         let type_node = node.child(0).unwrap();
@@ -157,7 +157,7 @@ impl AbstractTree for Type {
         let r#type = match type_node.kind() {
             "[" => {
                 let item_type_node = node.child(1).unwrap();
-                let item_type = Type::from_syntax_node(source, item_type_node, context)?;
+                let item_type = Type::from_syntax_node(source, item_type_node, _context)?;
 
                 Type::List(Box::new(item_type))
             }
@@ -172,7 +172,7 @@ impl AbstractTree for Type {
                     let child = node.child(index).unwrap();
 
                     if child.is_named() {
-                        let parameter_type = Type::from_syntax_node(source, child, context)?;
+                        let parameter_type = Type::from_syntax_node(source, child, _context)?;
 
                         parameter_types.push(parameter_type);
                     }
@@ -180,7 +180,7 @@ impl AbstractTree for Type {
 
                 let final_node = node.child(child_count - 1).unwrap();
                 let return_type = if final_node.is_named() {
-                    Type::from_syntax_node(source, final_node, context)?
+                    Type::from_syntax_node(source, final_node, _context)?
                 } else {
                     Type::None
                 };
@@ -197,7 +197,7 @@ impl AbstractTree for Type {
             "str" => Type::String,
             "option" => {
                 let inner_type_node = node.child(2).unwrap();
-                let inner_type = Type::from_syntax_node(source, inner_type_node, context)?;
+                let inner_type = Type::from_syntax_node(source, inner_type_node, _context)?;
 
                 Type::Option(Box::new(inner_type))
             }

src/built_in_functions/data_formats.rs

@@ -11,7 +11,7 @@ impl BuiltInFunction for FromJson {
         Error::expect_argument_amount(self, 1, arguments.len())?;
 
         let json_string = arguments.first().unwrap().as_string()?;
-        let value = serde_json::from_str(&json_string)?;
+        let value = serde_json::from_str(json_string)?;
 
         Ok(value)
     }

src/built_in_functions/packages.rs

@@ -15,7 +15,7 @@ impl BuiltInFunction for InstallPackages {
         let mut command = Command::new("sudo");
         let argument_list = arguments.first().unwrap().as_list()?;
 
-        command.args(&["dnf", "-y", "install"]);
+        command.args(["dnf", "-y", "install"]);
 
         for argument in argument_list.items().iter() {
             command.arg(argument.as_string()?);

src/value/list.rs

@@ -8,6 +8,12 @@ use crate::Value;
 #[derive(Debug, Clone)]
 pub struct List(Arc<RwLock<Vec<Value>>>);
 
+impl Default for List {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 impl List {
     pub fn new() -> Self {
         List(Arc::new(RwLock::new(Vec::new())))
@@ -52,9 +58,6 @@ impl Ord for List {
 
 impl PartialOrd for List {
     fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
-        let left = self.0.read().unwrap().clone().into_iter();
+        Some(self.cmp(other))
-        let right = other.0.read().unwrap().clone().into_iter();
-
-        left.partial_cmp(right)
     }
 }

src/value/map.rs

@@ -99,10 +99,7 @@ impl Ord for Map {
 
 impl PartialOrd for Map {
     fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
-        let left = self.variables.read().unwrap().clone().into_iter();
+        Some(self.cmp(other))
-        let right = other.variables.read().unwrap().clone().into_iter();
-
-        left.partial_cmp(right)
     }
 }
 

src/value/mod.rs

@@ -291,14 +291,12 @@ impl Sub for Value {
     type Output = Result<Self>;
 
     fn sub(self, other: Self) -> Self::Output {
-        match (self.as_integer(), other.as_integer()) {
+        if let (Ok(left), Ok(right)) = (self.as_integer(), other.as_integer()) {
-            (Ok(left), Ok(right)) => return Ok(Value::Integer(left - right)),
+            return Ok(Value::Integer(left - right));
-            _ => {}
         }
 
-        match (self.as_number(), other.as_number()) {
+        if let (Ok(left), Ok(right)) = (self.as_number(), other.as_number()) {
-            (Ok(left), Ok(right)) => return Ok(Value::Float(left - right)),
+            return Ok(Value::Float(left - right));
-            _ => {}
         }
 
         let non_number = if !self.is_number() { self } else { other };