Revert "fix: add function must return on all paths check"

This reverts commit a71045867a9de128b2458cd332d97a09c49c2b4a.

src/main/wacc/ast.scala

@@ -1,9 +1,7 @@
 package wacc
 
-import parsley.errors.combinator._
 import parsley.generic._
 import cats.data.NonEmptyList
-import parsley.Parsley
 
 object ast {
   // Expressions
@@ -98,24 +96,7 @@ object ast {
       params: List[Param],
       body: NonEmptyList[Stmt]
   )
-  object FuncDecl extends ParserBridge4[Type, Ident, List[Param], NonEmptyList[Stmt], FuncDecl] {
-    override def apply(
-        x1: Parsley[Type],
-        x2: => Parsley[Ident],
-        x3: => Parsley[List[Param]],
-        x4: => Parsley[NonEmptyList[Stmt]]
-    ): Parsley[FuncDecl] =
-      super.apply(
-        x1,
-        x2,
-        x3,
-        x4.guardAgainst {
-          case body if !body.isReturning =>
-            println(body)
-            Seq("All functions must end in a returning statement")
-        }
-      )
-  }
+  object FuncDecl extends ParserBridge4[Type, Ident, List[Param], NonEmptyList[Stmt], FuncDecl]
 
   case class Param(paramType: Type, name: Ident)
   object Param extends ParserBridge2[Type, Ident, Param]
@@ -159,14 +140,4 @@ object ast {
   object Fst extends ParserBridge1[LValue, Fst]
   case class Snd(elem: LValue) extends PairElem
   object Snd extends ParserBridge1[LValue, Snd]
-
-  extension (stmts: NonEmptyList[Stmt]) {
-    def isReturning: Boolean = stmts.last match {
-      case Return(_) | Exit(_)       => true
-      case If(_, thenStmt, elseStmt) => thenStmt.isReturning && elseStmt.isReturning
-      case While(_, body)            => body.isReturning
-      case Block(body)               => body.isReturning
-      case _                         => false
-    }
-  }
 }