private void CreateField(TypeInfo type, TypeAttr attr, VarDesc var, ref bool isConversionLoss)
{
TypeDesc fieldTypeDesc = var.elemdescVar.tdesc;
TypeConverter typeConverter = new TypeConverter(m_info, type, fieldTypeDesc, ConversionType.Field);
Type fieldType = typeConverter.ConvertedType;
string fieldName = type.GetDocumentation(var.memid);
FieldBuilder field = m_typeBuilder.DefineField(fieldName, fieldType, FieldAttributes.Public);
typeConverter.ApplyAttributes(field);
isConversionLoss |= typeConverter.IsConversionLoss;
//
// Emit ComConversionLossAttribute for fields if necessary
//
if (typeConverter.IsConversionLoss)
{
field.SetCustomAttribute(CustomAttributeHelper.GetBuilderForComConversionLoss());
//
// Emit Wrn_UnconvertableField warning
//
m_info.ReportEvent(
WarningCode.Wrn_UnconvertableField,
Resource.FormatString("Wrn_UnconvertableField", type.GetDocumentation(), fieldName));
}
//
// Emit TypeLibVarAttribute if necessary
//
if (var.wVarFlags != 0)
{
field.SetCustomAttribute(CustomAttributeHelper.GetBuilderForTypeLibVar((TypeLibVarFlags)var.wVarFlags));
}
}
public override void OnCreate()
{
string name = ManagedName;
if (m_type != null)
{
return;
}
TypeInfo typeInfo = RefNonAliasedTypeInfo;
using (TypeAttr typeAttr = typeInfo.GetTypeAttr())
{
//
// Create fields
//
int cVars = typeAttr.cVars;
bool isConversionLoss = false;
for (int n = 0; n < cVars; ++n)
{
using (VarDesc var = typeInfo.GetVarDesc(n))
{
CreateField(typeInfo, typeAttr, var, ref isConversionLoss);
}
}
//
// Emit StructLayout(LayoutKind.Sequential, Pack=cbAlignment)
//
m_typeBuilder.SetCustomAttribute(CustomAttributeHelper.GetBuilderForStructLayout(LayoutKind.Explicit, typeAttr.cbAlignment, typeAttr.cbSizeInstance));
//
// Emit ComConversionLossAttribute if necessary
//
if (isConversionLoss)
{
m_typeBuilder.SetCustomAttribute(CustomAttributeHelper.GetBuilderForComConversionLoss());
}
//
// Emit SerializableAttribute for /transform:serializablevalueclasses
//
if ((m_info.Settings.m_flags & TypeLibImporterFlags.SerializableValueClasses) != 0)
{
m_typeBuilder.SetCustomAttribute(CustomAttributeHelper.GetBuilderForSerializable());
}
m_type = m_typeBuilder.CreateType();
}
}
/// <summary>
/// Test whether the specified VT_RECORD contains any field that can be converted to a managed reference type
/// </summary>
private bool HasObjectFields(TypeInfo typeInfo)
{
TypeAttr typeAttr = typeInfo.GetTypeAttr();
for (int i = 0; i < typeAttr.cVars; ++i)
{
VarDesc var = typeInfo.GetVarDesc(i);
if (IsObjectType(typeInfo, var.elemdescVar.tdesc))
{
return(true);
}
}
return(false);
}
private void CreateField(TypeInfo type, TypeAttr attr, VarDesc var, ref bool isConversionLoss)
{
if (IsObjectType(type, var.elemdescVar.tdesc))
{
isConversionLoss = true;
}
else
{
TypeConverter typeConverter = new TypeConverter(m_info, type, var.elemdescVar.tdesc, ConversionType.Field);
Type fieldType = typeConverter.ConvertedType;
// TlbImp2 will only skip reference types, instead of skipping every field
// Also, TlbImp1 will skip ValueType *, which doesn't make any sense. TlbImp2 will keep ValueType * as IntPtr
string fieldName = type.GetDocumentation(var.memid);
// Generates the [FieldOffset(0)] layout declarations that approximate unions in managed code
FieldBuilder field = m_typeBuilder.DefineField(fieldName, fieldType, FieldAttributes.Public);
field.SetCustomAttribute(CustomAttributeHelper.GetBuilderForFieldOffset(0));
typeConverter.ApplyAttributes(field);
isConversionLoss |= typeConverter.IsConversionLoss;
//
// Emit ComConversionLossAttribute for fields if necessary
//
if (typeConverter.IsConversionLoss)
{
field.SetCustomAttribute(CustomAttributeHelper.GetBuilderForComConversionLoss());
//
// Emit Wrn_UnconvertableField warning
//
m_info.ReportEvent(
WarningCode.Wrn_UnconvertableField,
Resource.FormatString("Wrn_UnconvertableField", type.GetDocumentation(), fieldName));
}
}
}
public ElemDesc(VarDesc varDesc, ELEMDESC elemdesc)
{
m_parent = varDesc;
Init(elemdesc);
}
