From ee72c84d4bf9e2404e02fe20155efb502ceaee1b Mon Sep 17 00:00:00 2001 From: Matt Corallo Date: Tue, 5 Sep 2023 03:17:09 +0000 Subject: [PATCH] [C#] Add marshaling logic for array C# -> C conversion --- csharp_strings.py | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/csharp_strings.py b/csharp_strings.py index 15be359b..c08fc2eb 100644 --- a/csharp_strings.py +++ b/csharp_strings.py @@ -32,11 +32,42 @@ class Consts: self.bindings_header = """ using org.ldk.enums; using org.ldk.impl; +using System; using System.Runtime.InteropServices; namespace org { namespace ldk { namespace impl { internal class bindings { + internal class ArrayCoder : ICustomMarshaler { + int size = 0; + GCHandle pinnedArray; + public static ICustomMarshaler GetInstance(string pstrCookie) { + return new ArrayCoder(); + } + + public Object MarshalNativeToManaged(IntPtr pNativeData) { throw new NotImplementedException(); } + public IntPtr MarshalManagedToNative(Object obj) { + if (obj.GetType() == typeof(byte[])) { + byte[] inp = (byte[])obj; + IntPtr data = Marshal.AllocHGlobal(inp.Length + 8); + Marshal.WriteInt64(data, inp.Length); + Marshal.Copy(inp, 0, data + 8, inp.Length); + this.size = inp.Length + 8; + return data; + } else { + throw new NotImplementedException(); + } + } + public void CleanUpNativeData(IntPtr pNativeData) { + Marshal.FreeHGlobal(pNativeData); + } + public void CleanUpManagedData(Object ManagedObj) { } + public int GetNativeDataSize() { + // Blindly guess based on the last allocation, no idea how else to implement this. + return this.size; + } + } + /*static { init(java.lang.Enum.class, VecOrSliceDef.class); init_class_cache(); @@ -1129,6 +1160,8 @@ namespace org { namespace ldk { namespace structs { out_c += (", ") if arg_conv_info.c_ty != "void": out_c += (arg_conv_info.c_ty + " " + arg_conv_info.arg_name) + if "[]" in arg_conv_info.java_ty: + out_java += "[MarshalAs(UnmanagedType.CustomMarshaler, MarshalType=\"org.ldk.impl.ArrayCoder\")] " out_java += (arg_conv_info.java_ty + " _" + arg_conv_info.arg_name) # Add a _ to avoid using reserved words out_java_struct = "" -- 2.39.5