[new] add Managed2NativeFunctionPointer MethodBridge functions

Author: pirunxi

Editor/Commands/MethodBridgeGeneratorCommand.cs

@@ -31,7 +31,7 @@ public static void CleanIl2CppBuildCache()
             Directory.Delete(il2cppBuildCachePath, true);
         }
 
-        private static void GenerateMethodBridgeCppFile(IReadOnlyCollection<GenericMethod> genericMethods, List<RawReversePInvokeMethodInfo> reversePInvokeMethods,  string outputFile)
+        private static void GenerateMethodBridgeCppFile(IReadOnlyCollection<GenericMethod> genericMethods, List<RawReversePInvokeMethodInfo> reversePInvokeMethods, IReadOnlyCollection<RawCalliMethodSignatureInfo> calliMethodSignatures,  string outputFile)
         {
             string templateCode = File.ReadAllText(outputFile, Encoding.UTF8);
             var g = new Generator(new Generator.Options()
@@ -40,6 +40,7 @@ private static void GenerateMethodBridgeCppFile(IReadOnlyCollection<GenericMetho
                 OutputFile = outputFile,
                 GenericMethods = genericMethods,
                 ReversePInvokeMethods = reversePInvokeMethods,
+                CalliMethodSignatures = calliMethodSignatures,
                 Development = EditorUserBuildSettings.development,
             });
 
@@ -80,9 +81,12 @@ public static void GenerateMethodBridgeAndReversePInvokeWrapper(BuildTarget targ
             var reversePInvokeAnalyzer = new ReversePInvokeWrap.Analyzer(cache, hotUpdateDlls);
             reversePInvokeAnalyzer.Run();
 
+            var calliAnalyzer = new CalliAnalyzer(cache, hotUpdateDlls);
+            calliAnalyzer.Run();
+
             string outputFile = $"{SettingsUtil.GeneratedCppDir}/MethodBridge.cpp";
 
-            GenerateMethodBridgeCppFile(methodBridgeAnalyzer.GenericMethods, reversePInvokeAnalyzer.ReversePInvokeMethods, outputFile);
+            GenerateMethodBridgeCppFile(methodBridgeAnalyzer.GenericMethods, reversePInvokeAnalyzer.ReversePInvokeMethods, calliAnalyzer.CalliMethodSignatures, outputFile);
 
             CleanIl2CppBuildCache();
         }

Editor/MethodBridge/CalliAnalyzer.cs

@@ -0,0 +1,70 @@
+using dnlib.DotNet;
+using HybridCLR.Editor.Meta;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using UnityEngine;
+
+namespace HybridCLR.Editor.MethodBridge
+{
+
+    public class RawCalliMethodSignatureInfo
+    {
+        public MethodSig MethodSig { get; set; }
+    }
+
+    public class CalliAnalyzer
+    {
+        private readonly List<ModuleDefMD> _rootModules = new List<ModuleDefMD>();
+
+        private readonly List<RawCalliMethodSignatureInfo> _calliMethodSignatures = new List<RawCalliMethodSignatureInfo>();
+
+        public List<RawCalliMethodSignatureInfo> CalliMethodSignatures => _calliMethodSignatures;
+
+        public CalliAnalyzer(AssemblyCache cache, List<string> assemblyNames)
+        {
+            foreach (var assemblyName in assemblyNames)
+            {
+                _rootModules.Add(cache.LoadModule(assemblyName));
+            }
+        }
+
+        private void CollectCalli()
+        {
+            foreach (var mod in _rootModules)
+            {
+                Debug.Log($"ass:{mod.FullName} methodcount:{mod.Metadata.TablesStream.MethodTable.Rows}");
+                for (uint rid = 1, n = mod.Metadata.TablesStream.MethodTable.Rows; rid <= n; rid++)
+                {
+                    var method = mod.ResolveMethod(rid);
+                    //Debug.Log($"method:{method}");
+                    if (!method.HasBody)
+                    {
+                        continue;
+                    }
+
+                    foreach (var il in method.Body.Instructions)
+                    {
+                        if (il.OpCode.Code == dnlib.DotNet.Emit.Code.Calli)
+                        {
+                            MethodSig methodSig = (MethodSig)il.Operand;
+
+                            _calliMethodSignatures.Add(new RawCalliMethodSignatureInfo()
+                            {
+                                MethodSig = methodSig,
+                            });
+                            Debug.Log($"method:{method}  calli method signature:{methodSig}");
+                        }
+                    }
+                }
+            }
+        }
+
+        public void Run()
+        {
+            CollectCalli();
+        }
+    }
+}