LLVM + interface visitor

src/main/java/TP2/asd/SymTable.java

@@ -1,7 +1,48 @@
 package TP2.asd;
+import java.util.Stack;
+
+
+import org.pcollections.*;
+import TP2.asd.Interface.Type;
 
 public class SymTable {
+    private Stack<PMap<String,Type>> stackMap;
+
     public SymTable(){
-        
+        this.stackMap= new Stack<>();
+    }
+
+    public void next_layer(){
+        stackMap.push(HashTreePMap.empty());
+    }
+
+    public void quit_layer() throws Exception{
+        if(stackMap.isEmpty()){
+            throw new Exception();
+        }
+        stackMap.pop();
+    }
+    public PMap<String,Type> peppapeek(){
+        return stackMap.peek();
+    }
+
+    public void addVar(String s, Type t){
+        //Save temporary if not PMap wont save
+        PMap<String, Type> pmap = this.peppapeek();
+        pmap= pmap.plus(s,t);
+        //Delete old ones
+        stackMap.pop();
+        //Push the new one
+        stackMap.push(pmap);
+    }
+    
+    //Usually look for var in highest level , if not found research.
+    public boolean searchVar(String s){
+        for(int i= stackMap.size()-1; i>=0; i--){
+            if(stackMap.get(i).containsKey(s)){
+                return true;
+            }
+        }
+        return false;
     }
 }