error 3

src/main/java/TP2/Main.java

@@ -8,7 +8,7 @@ import org.antlr.runtime.CharStream;
 import org.antlr.runtime.CommonTokenStream;
 import org.antlr.runtime.RecognitionException;
 
-import TP2.asd.*;
+import TP2.asd.Program.*;
 import java.util.*;
 
 public class Main {
@@ -32,7 +32,7 @@ public class Main {
       VSLParser parser = new VSLParser(tokens);
 
       // Parse
-      ProgramImpl ast = parser.program();
+      ProgramImp ast = parser.program();
 
       // Pretty-print the program (to debug parsing)
       System.err.println("todo " + ast);

src/main/java/TP2/asd/Interface.java

@@ -1,6 +1,7 @@
 package TP2.asd;
 
 import java.util.Map;
+import TP2.asd.Program.*;
 
 public interface Interface{
     public interface Expression {
@@ -12,17 +13,17 @@ public interface Interface{
     }
 
     public interface ProgramVisitor<H,S> {
-        public S visitProgram(Program p, H h);
-        public S visitFunction(Program.Function f, H h);
+        public S visitProgram(ProgramImp p, H h);
+        public S visitFunction(Function f, H h);
     }
 
     public interface InstrVisitor<H,S>{
-        public S visitReturn(Program.Return_instr e, H h);
+        public S visitReturn(Return_instr e, H h);
     }
 
     public interface ExprVisitor<H,S> {
-        public S visitConst(Program.Const e,H h);
-        public S visitBinOp(Program.BinopExpression e, H h);
+        public S visitConst(Const e,H h);
+        public S visitBinOp(BinopExpression e, H h);
     }
 
     public interface Type{

src/main/java/TP2/asd/Program.java

@@ -1,9 +1,17 @@
 package TP2.asd;
 
 import java.util.ArrayList;
+import java.util.List;
+
 import TP2.asd.Interface.*;
 
 public class Program{
+    public static record ProgramImp(ArrayList<Instruction> instructions){
+        public <H, S> S accept(ProgramVisitor<H, S> v, H h) {
+            return v.visitProgram(this, h);
+        }
+    }
+
     public static record Function(Type type, String nom, ArrayList<Instruction> instructions){
         public Function(Type type, String name, Instruction instruction) {
             this(type, name, new ArrayList<>() {{ add(instruction); }});