public override MethodIL EmitIL()
{
TypeDesc owningType = _owningType.InstantiateAsOpen();
ILEmitter emitter = new ILEmitter();
TypeDesc eeTypePtrType = Context.SystemModule.GetKnownType("System", "EETypePtr");
MethodDesc eeTypePtrOfMethod = eeTypePtrType.GetKnownMethod("EETypePtrOf", null);
ILToken eeTypePtrToken = emitter.NewToken(eeTypePtrType);
var switchStream = emitter.NewCodeStream();
var getFieldStream = emitter.NewCodeStream();
ArrayBuilder <ILCodeLabel> fieldGetters = new ArrayBuilder <ILCodeLabel>();
foreach (FieldDesc field in owningType.GetFields())
{
if (field.IsStatic)
{
continue;
}
ILCodeLabel label = emitter.NewCodeLabel();
fieldGetters.Add(label);
getFieldStream.EmitLabel(label);
getFieldStream.EmitLdArg(2);
// We need something we can instantiate EETypePtrOf over. Also, the classlib
// code doesn't handle pointers.
TypeDesc boxableFieldType = field.FieldType;
if (boxableFieldType.IsPointer || boxableFieldType.IsFunctionPointer)
{
boxableFieldType = Context.GetWellKnownType(WellKnownType.IntPtr);
}
// The fact that the type is a reference type is sufficient for the callers.
// Don't unnecessarily create an MethodTable for the field type.
if (!boxableFieldType.IsSignatureVariable && !boxableFieldType.IsValueType)
{
boxableFieldType = Context.GetWellKnownType(WellKnownType.Object);
}
// If this is an enum, it's okay to Equals/GetHashCode the underlying type.
// Don't unnecessarily create an MethodTable for the enum.
boxableFieldType = boxableFieldType.UnderlyingType;
MethodDesc ptrOfField = eeTypePtrOfMethod.MakeInstantiatedMethod(boxableFieldType);
getFieldStream.Emit(ILOpcode.call, emitter.NewToken(ptrOfField));
getFieldStream.Emit(ILOpcode.stobj, eeTypePtrToken);
getFieldStream.EmitLdArg(0);
getFieldStream.Emit(ILOpcode.ldflda, emitter.NewToken(field));
getFieldStream.EmitLdArg(0);
getFieldStream.Emit(ILOpcode.sub);
getFieldStream.Emit(ILOpcode.ret);
}
if (fieldGetters.Count > 0)
{
switchStream.EmitLdArg(1);
switchStream.EmitSwitch(fieldGetters.ToArray());
}
switchStream.EmitLdc(fieldGetters.Count);
switchStream.Emit(ILOpcode.ret);
return(emitter.Link(this));
}
public override MethodIL EmitIL()
{
TypeDesc owningType = _owningType.InstantiateAsOpen();
ILEmitter emitter = new ILEmitter();
TypeDesc eeTypePtrType = Context.SystemModule.GetKnownType("System", "EETypePtr");
MethodDesc eeTypePtrOfMethod = eeTypePtrType.GetKnownMethod("EETypePtrOf", null);
ILToken eeTypePtrToken = emitter.NewToken(eeTypePtrType);
var switchStream = emitter.NewCodeStream();
var getFieldStream = emitter.NewCodeStream();
ArrayBuilder <ILCodeLabel> fieldGetters = new ArrayBuilder <ILCodeLabel>();
foreach (FieldDesc field in owningType.GetFields())
{
if (field.IsStatic)
{
continue;
}
ILCodeLabel label = emitter.NewCodeLabel();
fieldGetters.Add(label);
getFieldStream.EmitLabel(label);
getFieldStream.EmitLdArg(2);
// We need something we can instantiate EETypePtrOf over. Also, the classlib
// code doesn't handle pointers.
TypeDesc boxableFieldType = field.FieldType;
if (boxableFieldType.IsPointer || boxableFieldType.IsFunctionPointer)
{
boxableFieldType = Context.GetWellKnownType(WellKnownType.IntPtr);
}
MethodDesc ptrOfField = eeTypePtrOfMethod.MakeInstantiatedMethod(boxableFieldType);
getFieldStream.Emit(ILOpcode.call, emitter.NewToken(ptrOfField));
getFieldStream.Emit(ILOpcode.stobj, eeTypePtrToken);
getFieldStream.EmitLdArg(0);
getFieldStream.Emit(ILOpcode.ldflda, emitter.NewToken(field));
getFieldStream.EmitLdArg(0);
getFieldStream.Emit(ILOpcode.sub);
getFieldStream.Emit(ILOpcode.ret);
}
if (fieldGetters.Count > 0)
{
switchStream.EmitLdArg(1);
switchStream.EmitSwitch(fieldGetters.ToArray());
}
switchStream.EmitLdc(fieldGetters.Count);
switchStream.Emit(ILOpcode.ret);
return(emitter.Link(this));
}
