_ Git - ldk-java/blob - src/main/java/org/ldk/structs/Destination.java

   1 package org.ldk.structs;
   2
   3 import org.ldk.impl.bindings;
   4 import org.ldk.enums.*;
   5 import org.ldk.util.*;
   6 import java.util.Arrays;
   7 import java.lang.ref.Reference;
   8 import javax.annotation.Nullable;
   9
  10
  11 /**
  12  * The destination of an onion message.
  13  */
  14 @SuppressWarnings("unchecked") // We correctly assign various generic arrays
  15 public class Destination extends CommonBase {
  16         private Destination(Object _dummy, long ptr) { super(ptr); }
  17         @Override @SuppressWarnings("deprecation")
  18         protected void finalize() throws Throwable {
  19                 super.finalize();
  20                 if (ptr != 0) { bindings.Destination_free(ptr); }
  21         }
  22         static Destination constr_from_ptr(long ptr) {
  23                 bindings.LDKDestination raw_val = bindings.LDKDestination_ref_from_ptr(ptr);
  24                 if (raw_val.getClass() == bindings.LDKDestination.Node.class) {
  25                         return new Node(ptr, (bindings.LDKDestination.Node)raw_val);
  26                 }
  27                 if (raw_val.getClass() == bindings.LDKDestination.BlindedRoute.class) {
  28                         return new BlindedRoute(ptr, (bindings.LDKDestination.BlindedRoute)raw_val);
  29                 }
  30                 assert false; return null; // Unreachable without extending the (internal) bindings interface
  31         }
  32
  33         /**
  34          * We're sending this onion message to a node.
  35          */
  36         public final static class Node extends Destination {
  37                 public final byte[] node;
  38                 private Node(long ptr, bindings.LDKDestination.Node obj) {
  39                         super(null, ptr);
  40                         this.node = obj.node;
  41                 }
  42         }
  43         /**
  44          * We're sending this onion message to a blinded route.
  45          */
  46         public final static class BlindedRoute extends Destination {
  47                 public final org.ldk.structs.BlindedRoute blinded_route;
  48                 private BlindedRoute(long ptr, bindings.LDKDestination.BlindedRoute obj) {
  49                         super(null, ptr);
  50                         long blinded_route = obj.blinded_route;
  51                         org.ldk.structs.BlindedRoute blinded_route_hu_conv = null; if (blinded_route < 0 || blinded_route > 4096) { blinded_route_hu_conv = new org.ldk.structs.BlindedRoute(null, blinded_route); }
  52                         if (blinded_route_hu_conv != null) { blinded_route_hu_conv.ptrs_to.add(this); };
  53                         this.blinded_route = blinded_route_hu_conv;
  54                 }
  55         }
  56         /**
  57          * Utility method to constructs a new Node-variant Destination
  58          */
  59         public static Destination node(byte[] a) {
  60                 long ret = bindings.Destination_node(InternalUtils.check_arr_len(a, 33));
  61                 Reference.reachabilityFence(a);
  62                 if (ret >= 0 && ret <= 4096) { return null; }
  63                 org.ldk.structs.Destination ret_hu_conv = org.ldk.structs.Destination.constr_from_ptr(ret);
  64                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(ret_hu_conv); };
  65                 return ret_hu_conv;
  66         }
  67
  68         /**
  69          * Utility method to constructs a new BlindedRoute-variant Destination
  70          */
  71         public static Destination blinded_route(BlindedRoute a) {
  72                 long ret = bindings.Destination_blinded_route(a == null ? 0 : a.ptr);
  73                 Reference.reachabilityFence(a);
  74                 if (ret >= 0 && ret <= 4096) { return null; }
  75                 org.ldk.structs.Destination ret_hu_conv = org.ldk.structs.Destination.constr_from_ptr(ret);
  76                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(ret_hu_conv); };
  77                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(a); };
  78                 // Due to rust's strict-ownership memory model, in some cases we need to "move"
  79                 // an object to pass exclusive ownership to the function being called.
  80                 // In most cases, we avoid ret_hu_conv being visible in GC'd languages by cloning the object
  81                 // at the FFI layer, creating a new object which Rust can claim ownership of
  82                 // However, in some cases (eg here), there is no way to clone an object, and thus
  83                 // we actually have to pass full ownership to Rust.
  84                 // Thus, after ret_hu_conv call, a is reset to null and is now a dummy object.
  85                 a.ptr = 0;;
  86                 return ret_hu_conv;
  87         }
  88
  89 }