//
// Generated by JTB 1.3.2
//

package piglet.visitor;
import java.util.Enumeration;

import piglet.syntaxtree.BinOp;
import piglet.syntaxtree.CJumpStmt;
import piglet.syntaxtree.Call;
import piglet.syntaxtree.ErrorStmt;
import piglet.syntaxtree.Exp;
import piglet.syntaxtree.Goal;
import piglet.syntaxtree.HAllocate;
import piglet.syntaxtree.HLoadStmt;
import piglet.syntaxtree.HStoreStmt;
import piglet.syntaxtree.IntegerLiteral;
import piglet.syntaxtree.JumpStmt;
import piglet.syntaxtree.Label;
import piglet.syntaxtree.MoveStmt;
import piglet.syntaxtree.NoOpStmt;
import piglet.syntaxtree.Node;
import piglet.syntaxtree.NodeList;
import piglet.syntaxtree.NodeListOptional;
import piglet.syntaxtree.NodeOptional;
import piglet.syntaxtree.NodeSequence;
import piglet.syntaxtree.NodeToken;
import piglet.syntaxtree.Operator;
import piglet.syntaxtree.PrintStmt;
import piglet.syntaxtree.Procedure;
import piglet.syntaxtree.Stmt;
import piglet.syntaxtree.StmtExp;
import piglet.syntaxtree.StmtList;
import piglet.syntaxtree.Temp;

/**
 * Provides default methods which visit each node in the tree in depth-first
 * order.  Your visitors may extend this class.
 */
public class GJDepthFirst<R,A> implements GJVisitor<R,A> {
   //
   // Auto class visitors--probably don't need to be overridden.
   //
   public R visit(NodeList n, A argu) {
      R _ret=null;
      int _count=0;
      for ( Enumeration<Node> e = n.elements(); e.hasMoreElements(); ) {
         e.nextElement().accept(this,argu);
         _count++;
      }
      return _ret;
   }

   public R visit(NodeListOptional n, A argu) {
      if ( n.present() ) {
         R _ret=null;
         int _count=0;
         for ( Enumeration<Node> e = n.elements(); e.hasMoreElements(); ) {
            e.nextElement().accept(this,argu);
            _count++;
         }
         return _ret;
      }
      else
         return null;
   }

   public R visit(NodeOptional n, A argu) {
      if ( n.present() )
         return n.node.accept(this,argu);
      else
         return null;
   }

   public R visit(NodeSequence n, A argu) {
      R _ret=null;
      int _count=0;
      for ( Enumeration<Node> e = n.elements(); e.hasMoreElements(); ) {
         e.nextElement().accept(this,argu);
         _count++;
      }
      return _ret;
   }

   public R visit(NodeToken n, A argu) { return null; }

   //
   // User-generated visitor methods below
   //

   /**
    * f0 -> "MAIN"
    * f1 -> StmtList()
    * f2 -> "END"
    * f3 -> ( Procedure() )*
    * f4 -> <EOF>
    */
   public R visit(Goal n, A argu) {
      R _ret=null;
      n.f0.accept(this, argu);
      n.f1.accept(this, argu);
      n.f2.accept(this, argu);
      n.f3.accept(this, argu);
      n.f4.accept(this, argu);
      return _ret;
   }

   /**
    * f0 -> ( ( Label() )? Stmt() )*
    */
   public R visit(StmtList n, A argu) {
      R _ret=null;
      n.f0.accept(this, argu);
      return _ret;
   }

   /**
    * f0 -> Label()
    * f1 -> "["
    * f2 -> IntegerLiteral()
    * f3 -> "]"
    * f4 -> StmtExp()
    */
   public R visit(Procedure n, A argu) {
      R _ret=null;
      n.f0.accept(this, argu);
      n.f1.accept(this, argu);
      n.f2.accept(this, argu);
      n.f3.accept(this, argu);
      n.f4.accept(this, argu);
      return _ret;
   }

   /**
    * f0 -> NoOpStmt()
    *       | ErrorStmt()
    *       | CJumpStmt()
    *       | JumpStmt()
    *       | HStoreStmt()
    *       | HLoadStmt()
    *       | MoveStmt()
    *       | PrintStmt()
    */
   public R visit(Stmt n, A argu) {
      R _ret=null;
      n.f0.accept(this, argu);
      return _ret;
   }

   /**
    * f0 -> "NOOP"
    */
   public R visit(NoOpStmt n, A argu) {
      R _ret=null;
      n.f0.accept(this, argu);
      return _ret;
   }

   /**
    * f0 -> "ERROR"
    */
   public R visit(ErrorStmt n, A argu) {
      R _ret=null;
      n.f0.accept(this, argu);
      return _ret;
   }

   /**
    * f0 -> "CJUMP"
    * f1 -> Exp()
    * f2 -> Label()
    */
   public R visit(CJumpStmt n, A argu) {
      R _ret=null;
      n.f0.accept(this, argu);
      n.f1.accept(this, argu);
      n.f2.accept(this, argu);
      return _ret;
   }

   /**
    * f0 -> "JUMP"
    * f1 -> Label()
    */
   public R visit(JumpStmt n, A argu) {
      R _ret=null;
      n.f0.accept(this, argu);
      n.f1.accept(this, argu);
      return _ret;
   }

   /**
    * f0 -> "HSTORE"
    * f1 -> Exp()
    * f2 -> IntegerLiteral()
    * f3 -> Exp()
    */
   public R visit(HStoreStmt n, A argu) {
      R _ret=null;
      n.f0.accept(this, argu);
      n.f1.accept(this, argu);
      n.f2.accept(this, argu);
      n.f3.accept(this, argu);
      return _ret;
   }

   /**
    * f0 -> "HLOAD"
    * f1 -> Temp()
    * f2 -> Exp()
    * f3 -> IntegerLiteral()
    */
   public R visit(HLoadStmt n, A argu) {
      R _ret=null;
      n.f0.accept(this, argu);
      n.f1.accept(this, argu);
      n.f2.accept(this, argu);
      n.f3.accept(this, argu);
      return _ret;
   }

   /**
    * f0 -> "MOVE"
    * f1 -> Temp()
    * f2 -> Exp()
    */
   public R visit(MoveStmt n, A argu) {
      R _ret=null;
      n.f0.accept(this, argu);
      n.f1.accept(this, argu);
      n.f2.accept(this, argu);
      return _ret;
   }

   /**
    * f0 -> "PRINT"
    * f1 -> Exp()
    */
   public R visit(PrintStmt n, A argu) {
      R _ret=null;
      n.f0.accept(this, argu);
      n.f1.accept(this, argu);
      return _ret;
   }

   /**
    * f0 -> StmtExp()
    *       | Call()
    *       | HAllocate()
    *       | BinOp()
    *       | Temp()
    *       | IntegerLiteral()
    *       | Label()
    */
   public R visit(Exp n, A argu) {
      R _ret=null;
      n.f0.accept(this, argu);
      return _ret;
   }

   /**
    * f0 -> "BEGIN"
    * f1 -> StmtList()
    * f2 -> "RETURN"
    * f3 -> Exp()
    * f4 -> "END"
    */
   public R visit(StmtExp n, A argu) {
      R _ret=null;
      n.f0.accept(this, argu);
      n.f1.accept(this, argu);
      n.f2.accept(this, argu);
      n.f3.accept(this, argu);
      n.f4.accept(this, argu);
      return _ret;
   }

   /**
    * f0 -> "CALL"
    * f1 -> Exp()
    * f2 -> "("
    * f3 -> ( Exp() )*
    * f4 -> ")"
    */
   public R visit(Call n, A argu) {
      R _ret=null;
      n.f0.accept(this, argu);
      n.f1.accept(this, argu);
      n.f2.accept(this, argu);
      n.f3.accept(this, argu);
      n.f4.accept(this, argu);
      return _ret;
   }

   /**
    * f0 -> "HALLOCATE"
    * f1 -> Exp()
    */
   public R visit(HAllocate n, A argu) {
      R _ret=null;
      n.f0.accept(this, argu);
      n.f1.accept(this, argu);
      return _ret;
   }

   /**
    * f0 -> Operator()
    * f1 -> Exp()
    * f2 -> Exp()
    */
   public R visit(BinOp n, A argu) {
      R _ret=null;
      n.f0.accept(this, argu);
      n.f1.accept(this, argu);
      n.f2.accept(this, argu);
      return _ret;
   }

   /**
    * f0 -> "LT"
    *       | "PLUS"
    *       | "MINUS"
    *       | "TIMES"
    */
   public R visit(Operator n, A argu) {
      R _ret=null;
      n.f0.accept(this, argu);
      return _ret;
   }

   /**
    * f0 -> "TEMP"
    * f1 -> IntegerLiteral()
    */
   public R visit(Temp n, A argu) {
      R _ret=null;
      n.f0.accept(this, argu);
      n.f1.accept(this, argu);
      return _ret;
   }

   /**
    * f0 -> <INTEGER_LITERAL>
    */
   public R visit(IntegerLiteral n, A argu) {
      R _ret=null;
      n.f0.accept(this, argu);
      return _ret;
   }

   /**
    * f0 -> <IDENTIFIER>
    */
   public R visit(Label n, A argu) {
      R _ret=null;
      n.f0.accept(this, argu);
      return _ret;
   }

}