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)
{
if (mw.Name == cpi.Name && mw.Signature == samMethodType.Signature)
{
interfaceMethod = mw;
methods.Add(mw);
}
else if (mw.IsAbstract && !IsObjectMethod(mw))
{
methods.Add(mw);
}
}
if (interfaceMethod == null || !interfaceMethod.IsAbstract || IsObjectMethod(interfaceMethod) || !MatchSignatures(interfaceMethod, samMethodType))
{
Fail("interfaceMethod");
return false;
}
TypeBuilder tb = context.DefineAnonymousClass();
// we're not implementing the interfaces recursively (because we don't care about .NET Compact anymore),
// but should we decide to do that, we'd need to somehow communicate to AnonymousTypeWrapper what the 'real' interface is
tb.AddInterfaceImplementation(interfaceType.TypeAsBaseType);
if (serializable && Array.IndexOf(markers, CoreClasses.java.io.Serializable.Wrapper) == -1)
{
tb.AddInterfaceImplementation(CoreClasses.java.io.Serializable.Wrapper.TypeAsBaseType);
}
foreach (TypeWrapper marker in markers)
{
tb.AddInterfaceImplementation(marker.TypeAsBaseType);
}
ctor = CreateConstructorAndDispatch(context, cpi, tb, methods, implParameters, samMethodType, implMethod, instantiatedMethodType, serializable);
AddDefaultInterfaceMethods(context, methodList, tb);
return true;
}
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)
{
ilgen.Emit(OpCodes.Conv_I1);
}
if (Ra != Ru)
{
if (Ru == PrimitiveTypeWrapper.VOID)
{
ilgen.Emit(OpCodes.Pop);
}
else if (Ra.IsGhost)
{
Ra.EmitConvSignatureTypeToStackType(ilgen);
}
else if (Ru.IsGhost)
{
Ru.EmitConvStackTypeToSignatureType(ilgen, Ra);
}
}
if (Ra != Rt)
{
if (Rt.IsPrimitive)
{
if (Rt == PrimitiveTypeWrapper.VOID)
{
// already popped
}
else if (!Ra.IsPrimitive)
{
TypeWrapper primitive = GetPrimitiveFromWrapper(Ra);
if (primitive != null)
{
Boxer.EmitUnbox(ilgen, primitive, false);
}
else
{
// If Q is not a primitive wrapper, cast Q to the base Wrapper(S); for example Number for numeric types
EmitConvertingUnbox(ilgen, Rt);
}
}
else if (Rt == PrimitiveTypeWrapper.LONG)
{
ilgen.Emit(OpCodes.Conv_I8);
}
else if (Rt == PrimitiveTypeWrapper.FLOAT)
{
ilgen.Emit(OpCodes.Conv_R4);
}
else if (Rt == PrimitiveTypeWrapper.DOUBLE)
{
ilgen.Emit(OpCodes.Conv_R8);
}
}
else if (Ra.IsPrimitive)
{
Boxer.EmitBox(ilgen, GetPrimitiveFromWrapper(Rt));
}
else
{
Rt.EmitCheckcast(ilgen);
}
}
ilgen.EmitTailCallPrevention();
ilgen.Emit(OpCodes.Ret);
ilgen.DoEmit();
}
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;
}