[C#] Check in initial auto-generated C# bindings

[ldk-java] / c_sharp / src / org / ldk / structs / Filter.cs

diff --git a/c_sharp/src/org/ldk/structs/Filter.cs b/c_sharp/src/org/ldk/structs/Filter.cs
new file mode 100644 (file)
index 0000000..239fb06
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+++ b/c_sharp/src/org/ldk/structs/Filter.cs
@@ -0,0 +1,105 @@
+using org.ldk.impl;
+using org.ldk.enums;
+using org.ldk.util;
+using System;
+
+namespace org { namespace ldk { namespace structs {
+
+/**
+ * The `Filter` trait defines behavior for indicating chain activity of interest pertaining to
+ * channels.
+ * 
+ * This is useful in order to have a [`Watch`] implementation convey to a chain source which
+ * transactions to be notified of. Notification may take the form of pre-filtering blocks or, in
+ * the case of [BIP 157]/[BIP 158], only fetching a block if the compact filter matches. If
+ * receiving full blocks from a chain source, any further filtering is unnecessary.
+ * 
+ * After an output has been registered, subsequent block retrievals from the chain source must not
+ * exclude any transactions matching the new criteria nor any in-block descendants of such
+ * transactions.
+ * 
+ * Note that use as part of a [`Watch`] implementation involves reentrancy. Therefore, the `Filter`
+ * should not block on I/O. Implementations should instead queue the newly monitored data to be
+ * processed later. Then, in order to block until the data has been processed, any [`Watch`]
+ * invocation that has called the `Filter` must return [`InProgress`].
+ * 
+ * [`InProgress`]: ChannelMonitorUpdateStatus::InProgress
+ * [BIP 157]: https://github.com/bitcoin/bips/blob/master/bip-0157.mediawiki
+ * [BIP 158]: https://github.com/bitcoin/bips/blob/master/bip-0158.mediawiki
+ */
+public class Filter : CommonBase {
+       internal readonly bindings.LDKFilter bindings_instance;
+       internal Filter(object _dummy, long ptr) : base(ptr) { bindings_instance = null; }
+       private Filter(bindings.LDKFilter arg) : base(bindings.LDKFilter_new(arg)) {
+               this.ptrs_to.AddLast(arg);
+               this.bindings_instance = arg;
+       }
+       ~Filter() {
+               if (ptr != 0) { bindings.Filter_free(ptr); }
+       }
+
+       public interface FilterInterface {
+               /**
+                * Registers interest in a transaction with `txid` and having an output with `script_pubkey` as
+                * a spending condition.
+                */
+               void register_tx(byte[] _txid, byte[] _script_pubkey);
+               /**
+                * Registers interest in spends of a transaction output.
+                * 
+                * Note that this method might be called during processing of a new block. You therefore need
+                * to ensure that also dependent output spents within an already connected block are correctly
+                * handled, e.g., by re-scanning the block in question whenever new outputs have been
+                * registered mid-processing.
+                */
+               void register_output(WatchedOutput _output);
+       }
+       private class LDKFilterHolder { internal Filter held; }
+       private class LDKFilterImpl : bindings.LDKFilter {
+               internal LDKFilterImpl(FilterInterface arg, LDKFilterHolder impl_holder) { this.arg = arg; this.impl_holder = impl_holder; }
+               private FilterInterface arg;
+               private LDKFilterHolder impl_holder;
+               public void register_tx(byte[] _txid, byte[] _script_pubkey) {
+                       arg.register_tx(_txid, _script_pubkey);
+                               GC.KeepAlive(arg);
+               }
+               public void register_output(long _output) {
+                       org.ldk.structs.WatchedOutput _output_hu_conv = null; if (_output < 0 || _output > 4096) { _output_hu_conv = new org.ldk.structs.WatchedOutput(null, _output); }
+                       if (_output_hu_conv != null) { _output_hu_conv.ptrs_to.AddLast(this); };
+                       arg.register_output(_output_hu_conv);
+                               GC.KeepAlive(arg);
+               }
+       }
+       public static Filter new_impl(FilterInterface arg) {
+               LDKFilterHolder impl_holder = new LDKFilterHolder();
+               impl_holder.held = new Filter(new LDKFilterImpl(arg, impl_holder));
+               return impl_holder.held;
+       }
+       /**
+        * Registers interest in a transaction with `txid` and having an output with `script_pubkey` as
+        * a spending condition.
+        */
+       public void register_tx(byte[] txid, byte[] script_pubkey) {
+               bindings.Filter_register_tx(this.ptr, InternalUtils.check_arr_len(txid, 32), script_pubkey);
+               GC.KeepAlive(this);
+               GC.KeepAlive(txid);
+               GC.KeepAlive(script_pubkey);
+       }
+
+       /**
+        * Registers interest in spends of a transaction output.
+        * 
+        * Note that this method might be called during processing of a new block. You therefore need
+        * to ensure that also dependent output spents within an already connected block are correctly
+        * handled, e.g., by re-scanning the block in question whenever new outputs have been
+        * registered mid-processing.
+        */
+       public void register_output(org.ldk.structs.WatchedOutput output) {
+               bindings.Filter_register_output(this.ptr, output == null ? 0 : output.ptr);
+               GC.KeepAlive(this);
+               GC.KeepAlive(output);
+               if (this != null) { this.ptrs_to.AddLast(output); };
+       }
+
+}
+} } }