parser + asd non testé non builder

src/main/java/TP2/asd/ExprEval.java

@@ -0,0 +1,23 @@
+package TP2.asd;
+
+import java.util.Map;
+
+public class ExprEval implements ExprVisitor<Map<String, Type>,Integer> {
+
+    @Override
+    public Integer visitConst(Const c, Map<String, Type> h) {
+        return c.c();
+    }
+
+    @Override
+    public Integer visitBinOp(BinopExpression e, Map<String, Type> h) {
+        switch(e.op()){
+            case Op.PLUS: return e.e1().accept(this, h)+e.e2().accept(this, h);
+            case Op.MINUS: return e.e1().accept(this, h)-e.e2().accept(this, h);
+            case Op.TIMES: return e.e1().accept(this, h)*e.e2().accept(this, h);
+            case Op.DIV: return e.e1().accept(this, h)/e.e2().accept(this, h);
+            default: throw new IllegalArgumentException();
+        }
+    }
+    
+}