From f0692ff5f9e39cbd1c203e9d5abebf55a3d0f6fc Mon Sep 17 00:00:00 2001
From: Emanuele Grasso <96300448+L0P0P@users.noreply.github.com>
Date: Sat, 6 Jul 2024 09:47:25 +0200
Subject: Fixed the print of the ast and some warnings (#19)

Co-authored-by: Santo Cariotti <santo@dcariotti.me>
---
 src/ast/nodes/ExprNode.java | 23 +++++++++++++----------
 1 file changed, 13 insertions(+), 10 deletions(-)

(limited to 'src/ast/nodes/ExprNode.java')

diff --git a/src/ast/nodes/ExprNode.java b/src/ast/nodes/ExprNode.java
index 873d537..693176a 100644
--- a/src/ast/nodes/ExprNode.java
+++ b/src/ast/nodes/ExprNode.java
@@ -52,7 +52,7 @@ public class ExprNode implements Node {
 
     @Override
     public ArrayList<SemanticError> checkSemantics(SymbolTable ST, int _nesting) {
-        ArrayList<SemanticError> errors = new ArrayList();
+        ArrayList<SemanticError> errors = new ArrayList<>();
 
         // check if the atom is a function
         if (atom != null && !trailers.isEmpty()) {
@@ -130,19 +130,22 @@ public class ExprNode implements Node {
         if (atom != null) {
             str += atom.toPrint(prefix);
         }
-
         if (compOp != null) {
             str += compOp.toPrint(prefix);
         }
-
-        for (var expr : exprs) {
-            str = expr.toPrint(prefix);
-        }
-
-        for (var trailer : trailers) {
-            str = trailer.toPrint(prefix);
+        
+        if (exprs != null) {
+            for (var expr : exprs) {
+                str += expr.toPrint(prefix);
+            }
         }
-
+        
+        if (trailers != null) {
+            for (var trailer : trailers) {
+                str += trailer.toPrint(prefix);
+            }
+        } 
+        
         if (op != null) {
             str += prefix + "Op(" + op + ")\n";
         }
-- 
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