diff --git a/src/main/java/TP2/llvm/Interface.java b/src/main/java/TP2/llvm/Interface.java
index 72e0662..3dff36b 100644
--- a/src/main/java/TP2/llvm/Interface.java
+++ b/src/main/java/TP2/llvm/Interface.java
@@ -1,44 +1,58 @@
 package TP2.llvm;
+import TP2.asd.Program.AssignImp;
+import TP2.asd.Program.BinopExpressionImp;
+import TP2.asd.Program.ConstImp;
 import TP2.asd.Program.ProgramImp;
+import TP2.asd.Program.Return_instrImp;
 import TP2.llvm.ProgramLLVM.*;
 
 public interface Interface {
-    //////////ProgramLLVM
+    //////////ProgramLLVM (Program)
     public interface ProgLLVM{
         public <H,S> S accept(ProgramLLVMVisitor<H,S> v, H h);
         public String prettyprinter(); 
     }
 
     public interface ProgramLLVMVisitor<H,S> {
-        public S visitProgramLLVM(ProgramLLVMImpl programImp, H h);
+        public S visitProgramLLVM(ProgramLLVMImpl e, H h);
     }
 
-    //////////DefineLLVM
+    //////////DefineLLVM (function)
     public interface DefineLLVM{
         public <H,S> S accept(DefineLLVMVisitor<H,S> v, H h);
         public String prettyprinter(); 
     }
 
     public interface DefineLLVMVisitor<H,S> {
-        public S visitProgramLLVM(DefineLLVMImpl defineLLVMImp, H h);
+        public S visitProgramLLVM(DefineLLVMImpl e, H h);
     }
 
+    public interface InstructionLLVM{
+        public <H,S> S accept(InstructionLLVMVisitor<H,S> v, H h);
+        public String prettyprinter(); 
+    }
+
+    public interface InstructionLLVMVisitor<H,S> {
+        public S visitReturnLLVM(ReturnLLVMImp e, H h);
+        public S visitAssignLLVM(AssignLVMImp e, H h);
+    }
+
+    //////////ExpressionLLVM (expression)
+    public interface ExpressionLLVM{
+        public String prettyprinter(); 
+    }
+
+    public interface ExpressionLLVMVisitor<H,S> {
+        public S visitConstLLVM(ConstLLVMImp e,H h);
+        public S visitBinOpLLVM(BinOpLLVMImp e, H h);
+    }
+
+    public interface Val{
+        public String prettyprinter(); 
+    }  
 
     public interface IdentifierLLVM{ //globaux @ et local %
         public String prettyprinter(); 
     }
 
-    public interface InstructionLLVM{
-        public String prettyprinter(); 
-    }
-
-    public interface ExpressionLLVM{
-        public String prettyprinter(); 
-    }
-
-    public interface Val{
-        public String prettyprinter(); 
-    }        
-
-
 }