fix code warnings

3 files changed, 4 insertions, 4 deletions

diff --git a/src/main/java/no/eliashaugsbakk/kompilator/parsing/node/Program.java b/src/main/java/no/eliashaugsbakk/kompilator/parsing/node/Program.java
index 0c7cd32..d61654f 100644
--- a/src/main/java/no/eliashaugsbakk/kompilator/parsing/node/Program.java
+++ b/src/main/java/no/eliashaugsbakk/kompilator/parsing/node/Program.java
@@ -8,7 +8,7 @@ import no.eliashaugsbakk.kompilator.parsing.node.statement.Statement;
  * Root node of the AST. Contains all top-level statements.
  */
 public class Program extends ASTNode {
-  public List<Statement> statements = new ArrayList<>();
+  public final List<Statement> statements = new ArrayList<>();
 
   public void addStatement(Statement statement) {
     this.statements.add(statement);
diff --git a/src/main/java/no/eliashaugsbakk/kompilator/parsing/node/expression/FunctionCall.java b/src/main/java/no/eliashaugsbakk/kompilator/parsing/node/expression/FunctionCall.java
index 2537d9c..e18063b 100644
--- a/src/main/java/no/eliashaugsbakk/kompilator/parsing/node/expression/FunctionCall.java
+++ b/src/main/java/no/eliashaugsbakk/kompilator/parsing/node/expression/FunctionCall.java
@@ -7,8 +7,8 @@ import no.eliashaugsbakk.kompilator.parsing.Type;
  * Represents a function call statement (e.g., print("Hello, world")).
  */
 public class FunctionCall extends Expression {
-  public String functionName;
-  public List<Expression> arguments;
+  public final String functionName;
+  public final List<Expression> arguments;
 
   public FunctionCall(String functionName, List<Expression> arguments) {
     this.functionName = functionName;
diff --git a/src/main/java/no/eliashaugsbakk/kompilator/parsing/node/statement/ExpressionStatement.java b/src/main/java/no/eliashaugsbakk/kompilator/parsing/node/statement/ExpressionStatement.java
index b810a04..e46b691 100644
--- a/src/main/java/no/eliashaugsbakk/kompilator/parsing/node/statement/ExpressionStatement.java
+++ b/src/main/java/no/eliashaugsbakk/kompilator/parsing/node/statement/ExpressionStatement.java
@@ -8,7 +8,7 @@ import no.eliashaugsbakk.kompilator.parsing.node.expression.Expression;
  *    function call.
  */
 public class ExpressionStatement extends Statement {
-  public Expression expression;
+  public final Expression expression;
   public ExpressionStatement(Expression expression) {
     this.expression = expression;
   }