Fix clippy issues

valuescript_compiler/src/asm.rs

@@ -336,8 +336,9 @@ impl std::fmt::Display for LabelRef {
   }
 }
 
-#[derive(Debug, Clone, PartialEq, Eq, Hash)]
+#[derive(Debug, Clone, PartialEq, Eq, Hash, Default)]
 pub enum Value {
+  #[default]
   Void,
   Undefined,
   Null,
@@ -352,12 +353,6 @@ pub enum Value {
   Builtin(Builtin),
 }
 
-impl Default for Value {
-  fn default() -> Self {
-    Value::Void
-  }
-}
-
 #[derive(Debug, Clone)]
 pub struct Number(pub f64);
 

valuescript_compiler/src/assembly_parser.rs

@@ -1007,11 +1007,11 @@ pub fn parse_module(content: &str) -> Module {
 }
 
 fn is_leading_identifier_char(c: char) -> bool {
-  c == '_' || ('a'..='z').contains(&c) || ('A'..='Z').contains(&c)
+  c == '_' || c.is_ascii_alphabetic()
 }
 
 fn is_identifier_char(c: char) -> bool {
-  c == '_' || ('0'..='9').contains(&c) || ('a'..='z').contains(&c) || ('A'..='Z').contains(&c)
+  c == '_' || c.is_ascii_alphanumeric()
 }
 
 fn advance_chars(iter: &mut std::iter::Peekable<std::str::Chars>, len: usize) {

valuescript_compiler/src/optimization/kal.rs

@@ -33,8 +33,9 @@ use super::try_to_kal::TryToKal;
  * change program behavior due to believing false things), whereas sometimes type systems (notably
  * TypeScript) are not.
  */
-#[derive(Clone)]
+#[derive(Clone, Default)]
 pub enum Kal {
+  #[default]
   Unknown,
   Void,
   Undefined,
@@ -50,12 +51,6 @@ pub enum Kal {
   Builtin(Builtin),
 }
 
-impl Default for Kal {
-  fn default() -> Self {
-    Kal::Unknown
-  }
-}
-
 #[derive(Clone)]
 pub struct Array {
   pub values: Vec<Kal>,

valuescript_compiler/src/target_accessor.rs

@@ -56,7 +56,7 @@ impl TargetAccessor {
   ) -> TargetAccessor {
     use swc_ecma_ast::Expr::*;
 
-    return match expr {
+    match expr {
       Ident(ident) => TargetAccessor::compile_ident(ec, &CrateIdent::from_swc_ident(ident)),
       This(this) => TargetAccessor::compile_ident(ec, &CrateIdent::this(this.span)),
       Member(member) => {
@@ -98,7 +98,7 @@ impl TargetAccessor {
 
         TargetAccessor::make_bad(ec)
       }
-    };
+    }
   }
 
   pub fn compile_ident(ec: &mut ExpressionCompiler, ident: &CrateIdent) -> TargetAccessor {