feat: implement CLI for parser

src/main/wacc/Main.scala

@@ -31,14 +31,18 @@ val cliParser = {
 
 def compile(contents: String): Int = {
   parser.parse(contents) match {
-    case Success(x)   => 0
-    case Failure(msg) => 100
+    case Success(ast) =>
+      // TODO: Do semantics things
+      0
+    case Failure(msg) =>
+      println(msg)
+      100
   }
 }
 
 def main(args: Array[String]): Unit =
   OParser.parse(cliParser, args, CliConfig()) match {
     case Some(config) =>
-      System.exit(scala.util.Random.between(0, 3) * 100)
+      System.exit(compile(os.read(os.Path(config.file.getAbsolutePath))))
     case None =>
   }