Properly handle java refs in traits returning traits

[ldk-java] / src / main / java / org / ldk / structs / FeeEstimator.java

diff --git a/src/main/java/org/ldk/structs/FeeEstimator.java b/src/main/java/org/ldk/structs/FeeEstimator.java
index 13c16315a47745dee7b01e08832b77afc1d8e960..910edae72d6ab5cc0ad9c6a3cedc3514252fb299 100644 (file)
--- a/src/main/java/org/ldk/structs/FeeEstimator.java
+++ b/src/main/java/org/ldk/structs/FeeEstimator.java
@@ -7,16 +7,32 @@ import java.util.Arrays;
 
 @SuppressWarnings("unchecked") // We correctly assign various generic arrays
 public class FeeEstimator extends CommonBase {
-       FeeEstimator(Object _dummy, long ptr) { super(ptr); }
-       public FeeEstimator(bindings.LDKFeeEstimator arg) {
+       final bindings.LDKFeeEstimator bindings_instance;
+       FeeEstimator(Object _dummy, long ptr) { super(ptr); bindings_instance = null; }
+       private FeeEstimator(bindings.LDKFeeEstimator arg) {
                super(bindings.LDKFeeEstimator_new(arg));
                this.ptrs_to.add(arg);
+               this.bindings_instance = arg;
        }
        @Override @SuppressWarnings("deprecation")
        protected void finalize() throws Throwable {
-               bindings.FeeEstimator_free(ptr); super.finalize();
+               if (ptr != 0) { bindings.FeeEstimator_free(ptr); } super.finalize();
        }
 
+       public static interface FeeEstimatorInterface {
+               int get_est_sat_per_1000_weight(LDKConfirmationTarget confirmation_target);
+       }
+       private static class LDKFeeEstimatorHolder { FeeEstimator held; }
+       public static FeeEstimator new_impl(FeeEstimatorInterface arg) {
+               final LDKFeeEstimatorHolder impl_holder = new LDKFeeEstimatorHolder();
+               impl_holder.held = new FeeEstimator(new bindings.LDKFeeEstimator() {
+                       @Override public int get_est_sat_per_1000_weight(LDKConfirmationTarget confirmation_target) {
+                               int ret = arg.get_est_sat_per_1000_weight(confirmation_target);
+                               return ret;
+                       }
+               });
+               return impl_holder.held;
+       }
        public int get_est_sat_per_1000_weight(LDKConfirmationTarget confirmation_target) {
                int ret = bindings.FeeEstimator_get_est_sat_per_1000_weight(this.ptr, confirmation_target);
                return ret;