provided code

src/main/wacc/lexer.scala

@@ -0,0 +1,16 @@
+package wacc
+
+import parsley.Parsley
+import parsley.token.Lexer
+import parsley.token.descriptions.*
+
+object lexer {
+    private val desc = LexicalDesc.plain.copy(
+        // your configuration goes here
+    )
+    private val lexer = Lexer(desc)
+
+    val integer = lexer.lexeme.integer.decimal
+    val implicits = lexer.lexeme.symbol.implicits
+    def fully[A](p: Parsley[A]): Parsley[A] = lexer.fully(p)
+}