refactor: style fixes in lexer and parser

src/main/wacc/parser.scala

@@ -53,7 +53,6 @@ object parser {
   val _parensCheck =
     char('(').verifiedExplain("use keyword 'call' to call functions")
 
-
   implicit val builder: ErrorBuilder[String] = new DefaultErrorBuilder with LexToken {
     def tokens = errTokens
   }
@@ -123,9 +122,13 @@ object parser {
   // Statements
   private lazy val `<program>` = Program(
     "begin" ~> many(
-      atomic((`<type>`.label("function declaration") <~> `<ident>` <~ "(")) <**> `<partial-func-decl>`
+      atomic(
+        (`<type>`.label("function declaration") <~> `<ident>` <~ "(")
+      ) <**> `<partial-func-decl>`
     ).label("function declaration"),
-    ((`<ident>` <~ "(")*> fail("function is missing return type") | `<stmt>`.label("main program body")) <~ "end"
+    ((`<ident>` <~ "(") *> fail("function is missing return type") | `<stmt>`.label(
+      "main program body"
+    )) <~ "end"
   )
   private lazy val `<partial-func-decl>` =
     FuncDecl(
@@ -156,8 +159,11 @@ object parser {
       )
       | While("while" ~> `<expr>`.labelWithType(LabelType.Expr) <~ "do", `<stmt>` <~ "done")
       | Block("begin" ~> `<stmt>` <~ "end")
-      | VarDecl(`<type>`, `<ident>` <~ "=".explain("functions must be defined on top of the main block"),
-        `<rvalue>`.label("valid initial value for variable"))
+      | VarDecl(
+        `<type>`,
+        `<ident>` <~ "=".explain("functions must be defined on top of the main block"),
+        `<rvalue>`.label("valid initial value for variable")
+      )
       | Assign(`<lvalue>` <~ "=", `<rvalue>`)
   private lazy val `<lvalue>`: Parsley[LValue] =
     `<pair-elem>` | `<ident-or-array-elem>`