1 files changed, 22 insertions, 7 deletions
diff --git a/src/ast/nodes/TrailerNode.java b/src/ast/nodes/TrailerNode.java
index b0a0ee7..aaa72f3 100644
--- a/src/ast/nodes/TrailerNode.java
+++ b/src/ast/nodes/TrailerNode.java
@@ -11,22 +11,25 @@ import org.antlr.v4.runtime.tree.TerminalNode;
  * Node for the `trailer` statement of the grammar.
  */
 public class TrailerNode implements Node {
-    private Node arglist;
-    private ArrayList<Node> exprs;
-    private TerminalNode methodCall;
-    private boolean isEmpty;
 
-    public TrailerNode(Node arglist, ArrayList<Node> exprs, TerminalNode methodCall) {
+    private final Node arglist;
+    private final ArrayList<Node> exprs;
+    private final TerminalNode methodCall;
+    private final boolean isParenthesis;
+    private final boolean isEmpty;
+
+    public TrailerNode(Node arglist, ArrayList<Node> exprs, TerminalNode methodCall, boolean isParenthesis) {
         this.arglist = arglist;
         this.exprs = exprs;
         this.methodCall = methodCall;
+        this.isParenthesis = isParenthesis;
 
-        this.isEmpty = (this.arglist == null && this.exprs.size() == 0 && this.methodCall == null);
+        this.isEmpty = (this.arglist == null && this.exprs.isEmpty() && this.methodCall == null);
     }
 
     @Override
     public ArrayList<SemanticError> checkSemantics(SymbolTable ST, int _nesting) {
-        ArrayList<SemanticError> errors = new ArrayList<SemanticError>();
+        ArrayList<SemanticError> errors = new ArrayList();
 
         if (arglist != null) {
             errors.addAll(arglist.checkSemantics(ST, _nesting));
@@ -39,6 +42,18 @@ public class TrailerNode implements Node {
         return errors;
     }
 
+    public int getArgumentNumber() {
+        if (arglist == null) {
+            return 0;
+        }
+
+        return ((ArglistNode) arglist).getArgumentNumber();
+    }
+
+    public boolean isParenthesis() {
+        return this.isParenthesis;
+    }
+
     @Override
     public Type typeCheck() {
         return new VoidType();