C# ClassFile.GetRetType方法代码示例

		internal static bool Emit(DynamicTypeWrapper.FinishContext context, ClassFile classFile, int constantPoolIndex, ClassFile.ConstantPoolItemInvokeDynamic cpi, CodeEmitter ilgen)
		{
			ClassFile.BootstrapMethod bsm = classFile.GetBootstrapMethod(cpi.BootstrapMethod);
			if (!IsLambdaMetafactory(classFile, bsm) && !IsLambdaAltMetafactory(classFile, bsm))
			{
				return false;
			}
			LambdaMetafactory lmf = context.GetValue<LambdaMetafactory>(constantPoolIndex);
			if (lmf.ctor == null && !lmf.EmitImpl(context, classFile, cpi, bsm, ilgen))
			{
#if STATIC_COMPILER
				if (context.TypeWrapper.GetClassLoader().DisableDynamicBinding)
				{
					StaticCompiler.IssueMessage(Message.UnableToCreateLambdaFactory);
				}
#endif
				return false;
			}
			ilgen.Emit(OpCodes.Newobj, lmf.ctor);
			// the CLR verification rules about type merging mean we have to explicitly cast to the interface type here
			ilgen.Emit(OpCodes.Castclass, cpi.GetRetType().TypeAsBaseType);
			return true;
		}

 internal ReplacedMethodWrapper(ClassFile.ConstantPoolItemMI cpi, IKVM.Internal.MapXml.InstructionList code)
     : base(cpi.GetClassType(), cpi.Name, cpi.Signature, null, cpi.GetRetType(), cpi.GetArgTypes(), Modifiers.Public, MemberFlags.None)
 {
     this.code = code;
 }

		private static bool MatchSignatures(MethodWrapper interfaceMethod, ClassFile.ConstantPoolItemMethodType samMethodType)
		{
			return interfaceMethod.ReturnType == samMethodType.GetRetType()
				&& MatchTypes(interfaceMethod.GetParameters(), samMethodType.GetArgTypes());
		}

		private bool EmitImpl(DynamicTypeWrapper.FinishContext context, ClassFile classFile, ClassFile.ConstantPoolItemInvokeDynamic cpi, ClassFile.BootstrapMethod bsm, CodeEmitter ilgen)
		{
			if (HasUnloadable(cpi))
			{
				Fail("cpi has unloadable");
				return false;
			}
			bool serializable = false;
			TypeWrapper[] markers = TypeWrapper.EmptyArray;
			ClassFile.ConstantPoolItemMethodType[] bridges = null;
			if (bsm.ArgumentCount > 3)
			{
				AltFlags flags = (AltFlags)classFile.GetConstantPoolConstantInteger(bsm.GetArgument(3));
				serializable = (flags & AltFlags.Serializable) != 0;
				int argpos = 4;
				if ((flags & AltFlags.Markers) != 0)
				{
					markers = new TypeWrapper[classFile.GetConstantPoolConstantInteger(bsm.GetArgument(argpos++))];
					for (int i = 0; i < markers.Length; i++)
					{
						if ((markers[i] = classFile.GetConstantPoolClassType(bsm.GetArgument(argpos++))).IsUnloadable)
						{
							Fail("unloadable marker");
							return false;
						}
					}
				}
				if ((flags & AltFlags.Bridges) != 0)
				{
					bridges = new ClassFile.ConstantPoolItemMethodType[classFile.GetConstantPoolConstantInteger(bsm.GetArgument(argpos++))];
					for (int i = 0; i < bridges.Length; i++)
					{
						bridges[i] = classFile.GetConstantPoolConstantMethodType(bsm.GetArgument(argpos++));
						if (HasUnloadable(bridges[i]))
						{
							Fail("unloadable bridge");
							return false;
						}
					}
				}
			}
			ClassFile.ConstantPoolItemMethodType samMethodType = classFile.GetConstantPoolConstantMethodType(bsm.GetArgument(0));
			ClassFile.ConstantPoolItemMethodHandle implMethod = classFile.GetConstantPoolConstantMethodHandle(bsm.GetArgument(1));
			ClassFile.ConstantPoolItemMethodType instantiatedMethodType = classFile.GetConstantPoolConstantMethodType(bsm.GetArgument(2));
			if (HasUnloadable(samMethodType)
				|| HasUnloadable((ClassFile.ConstantPoolItemMI)implMethod.MemberConstantPoolItem)
				|| HasUnloadable(instantiatedMethodType))
			{
				Fail("bsm args has unloadable");
				return false;
			}
			TypeWrapper interfaceType = cpi.GetRetType();
			MethodWrapper[] methodList;
			if (!CheckSupportedInterfaces(context.TypeWrapper, interfaceType, markers, bridges, out methodList))
			{
				Fail("unsupported interface");
				return false;
			}
			if (serializable && Array.Exists(methodList, delegate(MethodWrapper mw) { return mw.Name == "writeReplace" && mw.Signature == "()Ljava.lang.Object;"; }))
			{
				Fail("writeReplace");
				return false;
			}
			if (!IsSupportedImplMethod(implMethod, context.TypeWrapper, cpi.GetArgTypes(), instantiatedMethodType))
			{
				Fail("implMethod " + implMethod.MemberConstantPoolItem.Class + "::" + implMethod.MemberConstantPoolItem.Name + implMethod.MemberConstantPoolItem.Signature);
				return false;
			}
			TypeWrapper[] implParameters = GetImplParameters(implMethod);
			CheckConstraints(instantiatedMethodType, samMethodType, cpi.GetArgTypes(), implParameters);
			if (bridges != null)
			{
				foreach (ClassFile.ConstantPoolItemMethodType bridge in bridges)
				{
					if (bridge.Signature == samMethodType.Signature)
					{
						Fail("bridge signature matches sam");
						return false;
					}
					if (!CheckConstraints(instantiatedMethodType, bridge, cpi.GetArgTypes(), implParameters))
					{
						Fail("bridge constraints");
						return false;
					}
				}
			}
			if (instantiatedMethodType.GetRetType() != PrimitiveTypeWrapper.VOID)
			{
				TypeWrapper Rt = instantiatedMethodType.GetRetType();
				TypeWrapper Ra = GetImplReturnType(implMethod);
				if (Ra == PrimitiveTypeWrapper.VOID || !IsAdaptable(Ra, Rt, true))
				{
					Fail("The return type Rt is void, or the return type Ra is not void and is adaptable to Rt");
					return false;
				}
			}
			MethodWrapper interfaceMethod = null;
			List<MethodWrapper> methods = new List<MethodWrapper>();
			foreach (MethodWrapper mw in methodList)
			{
//.........这里部分代码省略.........

		private static void EmitDispatch(DynamicTypeWrapper.FinishContext context, TypeWrapper[] args, TypeBuilder tb, MethodWrapper interfaceMethod, TypeWrapper[] implParameters,
			ClassFile.ConstantPoolItemMethodHandle implMethod, ClassFile.ConstantPoolItemMethodType instantiatedMethodType, FieldBuilder[] capturedFields)
		{
			MethodBuilder mb = interfaceMethod.GetDefineMethodHelper().DefineMethod(context.TypeWrapper, tb, interfaceMethod.Name, MethodAttributes.Public | MethodAttributes.Virtual | MethodAttributes.NewSlot | MethodAttributes.Final);
			if (interfaceMethod.Name != interfaceMethod.RealName)
			{
				tb.DefineMethodOverride(mb, (MethodInfo)interfaceMethod.GetMethod());
			}
			CodeEmitter ilgen = CodeEmitter.Create(mb);
			for (int i = 0; i < capturedFields.Length; i++)
			{
				ilgen.EmitLdarg(0);
				OpCode opc = OpCodes.Ldfld;
				if (i == 0 && args[0].IsGhost)
				{
					switch (implMethod.Kind)
					{
						case ClassFile.RefKind.invokeInterface:
						case ClassFile.RefKind.invokeVirtual:
						case ClassFile.RefKind.invokeSpecial:
							opc = OpCodes.Ldflda;
							break;
					}
				}
				ilgen.Emit(opc, capturedFields[i]);
			}
			for (int i = 0, count = interfaceMethod.GetParameters().Length, k = capturedFields.Length; i < count; i++)
			{
				ilgen.EmitLdarg(i + 1);
				TypeWrapper Ui = interfaceMethod.GetParameters()[i];
				TypeWrapper Ti = instantiatedMethodType.GetArgTypes()[i];
				TypeWrapper Aj = implParameters[i + k];
				if (Ui == PrimitiveTypeWrapper.BYTE)
				{
					ilgen.Emit(OpCodes.Conv_I1);
				}
				if (Ti != Ui)
				{
					if (Ti.IsGhost)
					{
						Ti.EmitConvStackTypeToSignatureType(ilgen, Ui);
					}
					else if (Ui.IsGhost)
					{
						Ui.EmitConvSignatureTypeToStackType(ilgen);
					}
					else
					{
						Ti.EmitCheckcast(ilgen);
					}
				}
				if (Ti != Aj)
				{
					if (Ti.IsPrimitive && !Aj.IsPrimitive)
					{
						Boxer.EmitBox(ilgen, Ti);
					}
					else if (!Ti.IsPrimitive && Aj.IsPrimitive)
					{
						TypeWrapper primitive = GetPrimitiveFromWrapper(Ti);
						Boxer.EmitUnbox(ilgen, primitive, false);
						if (primitive == PrimitiveTypeWrapper.BYTE)
						{
							ilgen.Emit(OpCodes.Conv_I1);
						}
					}
					else if (Aj == PrimitiveTypeWrapper.LONG)
					{
						ilgen.Emit(OpCodes.Conv_I8);
					}
					else if (Aj == PrimitiveTypeWrapper.FLOAT)
					{
						ilgen.Emit(OpCodes.Conv_R4);
					}
					else if (Aj == PrimitiveTypeWrapper.DOUBLE)
					{
						ilgen.Emit(OpCodes.Conv_R8);
					}
				}
			}
			switch (implMethod.Kind)
			{
				case ClassFile.RefKind.invokeVirtual:
				case ClassFile.RefKind.invokeInterface:
					((MethodWrapper)implMethod.Member).EmitCallvirt(ilgen);
					break;
				case ClassFile.RefKind.newInvokeSpecial:
					((MethodWrapper)implMethod.Member).EmitNewobj(ilgen);
					break;
				case ClassFile.RefKind.invokeStatic:
				case ClassFile.RefKind.invokeSpecial:
					((MethodWrapper)implMethod.Member).EmitCall(ilgen);
					break;
				default:
					throw new InvalidOperationException();
			}
			TypeWrapper Ru = interfaceMethod.ReturnType;
			TypeWrapper Ra = GetImplReturnType(implMethod);
			TypeWrapper Rt = instantiatedMethodType.GetRetType();
			if (Ra == PrimitiveTypeWrapper.BYTE)
//.........这里部分代码省略.........

		private static MethodBuilder CreateConstructorAndDispatch(DynamicTypeWrapper.FinishContext context, ClassFile.ConstantPoolItemInvokeDynamic cpi, TypeBuilder tb,
			List<MethodWrapper> methods, TypeWrapper[] implParameters, ClassFile.ConstantPoolItemMethodType samMethodType, ClassFile.ConstantPoolItemMethodHandle implMethod,
			ClassFile.ConstantPoolItemMethodType instantiatedMethodType, bool serializable)
		{
			TypeWrapper[] args = cpi.GetArgTypes();

			// captured values
			Type[] capturedTypes = new Type[args.Length];
			FieldBuilder[] capturedFields = new FieldBuilder[capturedTypes.Length];
			for (int i = 0; i < capturedTypes.Length; i++)
			{
				capturedTypes[i] = args[i].TypeAsSignatureType;
				FieldAttributes attr = FieldAttributes.Private;
				if (i > 0 || !args[0].IsGhost)
				{
					attr |= FieldAttributes.InitOnly;
				}
				capturedFields[i] = tb.DefineField("arg$" + (i + 1), capturedTypes[i], attr);
			}

			// constructor
			MethodBuilder ctor = ReflectUtil.DefineConstructor(tb, MethodAttributes.Assembly, capturedTypes);
			CodeEmitter ilgen = CodeEmitter.Create(ctor);
			ilgen.Emit(OpCodes.Ldarg_0);
			ilgen.Emit(OpCodes.Call, Types.Object.GetConstructor(Type.EmptyTypes));
			for (int i = 0; i < capturedTypes.Length; i++)
			{
				ilgen.EmitLdarg(0);
				ilgen.EmitLdarg(i + 1);
				ilgen.Emit(OpCodes.Stfld, capturedFields[i]);
			}
			ilgen.Emit(OpCodes.Ret);
			ilgen.DoEmit();

			// dispatch methods
			foreach (MethodWrapper mw in methods)
			{
				EmitDispatch(context, args, tb, mw, implParameters, implMethod, instantiatedMethodType, capturedFields);
			}

			// writeReplace method
			if (serializable)
			{
				MethodBuilder writeReplace = tb.DefineMethod("writeReplace", MethodAttributes.Private, Types.Object, Type.EmptyTypes);
				ilgen = CodeEmitter.Create(writeReplace);
				context.TypeWrapper.EmitClassLiteral(ilgen);
				ilgen.Emit(OpCodes.Ldstr, cpi.GetRetType().Name.Replace('.', '/'));
				ilgen.Emit(OpCodes.Ldstr, cpi.Name);
				ilgen.Emit(OpCodes.Ldstr, samMethodType.Signature.Replace('.', '/'));
				ilgen.EmitLdc_I4((int)implMethod.Kind);
				ilgen.Emit(OpCodes.Ldstr, implMethod.Class.Replace('.', '/'));
				ilgen.Emit(OpCodes.Ldstr, implMethod.Name);
				ilgen.Emit(OpCodes.Ldstr, implMethod.Signature.Replace('.', '/'));
				ilgen.Emit(OpCodes.Ldstr, instantiatedMethodType.Signature.Replace('.', '/'));
				ilgen.EmitLdc_I4(capturedFields.Length);
				ilgen.Emit(OpCodes.Newarr, Types.Object);
				for (int i = 0; i < capturedFields.Length; i++)
				{
					ilgen.Emit(OpCodes.Dup);
					ilgen.EmitLdc_I4(i);
					ilgen.EmitLdarg(0);
					ilgen.Emit(OpCodes.Ldfld, capturedFields[i]);
					if (args[i].IsPrimitive)
					{
						Boxer.EmitBox(ilgen, args[i]);
					}
					else if (args[i].IsGhost)
					{
						args[i].EmitConvSignatureTypeToStackType(ilgen);
					}
					ilgen.Emit(OpCodes.Stelem, Types.Object);
				}
				MethodWrapper ctorSerializedLambda = ClassLoaderWrapper.LoadClassCritical("java.lang.invoke.SerializedLambda").GetMethodWrapper(StringConstants.INIT,
					"(Ljava.lang.Class;Ljava.lang.String;Ljava.lang.String;Ljava.lang.String;ILjava.lang.String;Ljava.lang.String;Ljava.lang.String;Ljava.lang.String;[Ljava.lang.Object;)V", false);
				ctorSerializedLambda.Link();
				ctorSerializedLambda.EmitNewobj(ilgen);
				ilgen.Emit(OpCodes.Ret);
				ilgen.DoEmit();

				if (!context.TypeWrapper.GetClassLoader().NoAutomagicSerialization)
				{
					// add .NET serialization interop support
					Serialization.MarkSerializable(tb);
					Serialization.AddGetObjectData(tb);
				}
			}

			return ctor;
		}

		private static bool IsSubTypeOf(ClassFile.ConstantPoolItemMethodType instantiatedMethodType, ClassFile.ConstantPoolItemMethodType samMethodType)
		{
			TypeWrapper[] T = instantiatedMethodType.GetArgTypes();
			TypeWrapper[] U = samMethodType.GetArgTypes();
			if (T.Length != U.Length)
			{
				return false;
			}
			for (int i = 0; i < T.Length; i++)
			{
				if (!T[i].IsAssignableTo(U[i]))
				{
					return false;
				}
			}
			TypeWrapper Rt = instantiatedMethodType.GetRetType();
			TypeWrapper Ru = samMethodType.GetRetType();
			return Rt.IsAssignableTo(Ru);
		}

		private static bool HasUnloadable(ClassFile.ConstantPoolItemMI cpi)
		{
			return HasUnloadable(cpi.GetArgTypes()) || cpi.GetRetType().IsUnloadable;
		}