fix: Use wildcard type in CtUnaryOperator get/setOperand (#5399)

spoon-dataflow/src/main/java/fr/inria/spoon/dataflow/scanners/DataFlowScanner.java

@@ -1399,7 +1399,7 @@ public <T> void visitCtUnaryOperator(CtUnaryOperator<T> operator)
  case PREINC:
  case POSTDEC:
  case PREDEC:
- CtExpression<T> operand = operator.getOperand();
+ CtExpression<?> operand = operator.getOperand();
  Expr prevExpr;
  if (operand instanceof CtArrayWrite)
  {

src/main/java/spoon/reflect/code/CtUnaryOperator.java

@@ -31,13 +31,13 @@ public interface CtUnaryOperator<T> extends CtExpression<T>, CtStatement {
  * Gets the expression to which the operator is applied.
  */
  @PropertyGetter(role = EXPRESSION)
- CtExpression<T> getOperand();
+ CtExpression<?> getOperand();
 
  /**
  * Sets the expression to which the operator is applied.
  */
  @PropertySetter(role = EXPRESSION)
- <C extends CtUnaryOperator> C setOperand(CtExpression<T> expression);
+ <C extends CtUnaryOperator> C setOperand(CtExpression<?> expression);
 
  /**
  * Sets the kind of this operator.

src/main/java/spoon/support/reflect/code/CtUnaryOperatorImpl.java

@@ -29,15 +29,15 @@ public class CtUnaryOperatorImpl<T> extends CtExpressionImpl<T> implements CtUna
  String label;
 
  @MetamodelPropertyField(role = EXPRESSION)
- CtExpression<T> operand;
+ CtExpression<?> operand;
 
  @Override
  public void accept(CtVisitor visitor) {
  visitor.visitCtUnaryOperator(this);
  }
 
  @Override
- public CtExpression<T> getOperand() {
+ public CtExpression<?> getOperand() {
  return operand;
  }
 
@@ -76,7 +76,7 @@ public <C extends CtStatement> C insertBefore(CtStatementList statements) {
  }
 
  @Override
- public <C extends CtUnaryOperator> C setOperand(CtExpression<T> expression) {
+ public <C extends CtUnaryOperator> C setOperand(CtExpression<?> expression) {
  if (expression != null) {
  expression.setParent(this);
  }