private void InitEnumData()
{
if (!IsEnum)
throw new InvalidOperationException("Type is not an Enum.");
_enumData = new EnumData();
ICorDebug.IMetadataImport import = null;
if (DesktopModule != null)
import = DesktopModule.GetMetadataImport();
if (import == null)
{
_enumData = new EnumData();
return;
}
IntPtr hnd = IntPtr.Zero;
int tokens;
List<string> names = new List<string>();
int[] fields = new int[64];
do
{
int res = import.EnumFields(ref hnd, (int)_token, fields, fields.Length, out tokens);
for (int i = 0; i < tokens; ++i)
{
FieldAttributes attr;
int mdTypeDef, pchField, pcbSigBlob, pdwCPlusTypeFlag, pcchValue;
IntPtr ppvSigBlob, ppValue = IntPtr.Zero;
StringBuilder builder = new StringBuilder(256);
res = import.GetFieldProps(fields[i], out mdTypeDef, builder, builder.Capacity, out pchField, out attr, out ppvSigBlob, out pcbSigBlob, out pdwCPlusTypeFlag, out ppValue, out pcchValue);
if ((int)attr == 0x606 && builder.ToString() == "value__")
{
SigParser parser = new SigParser(ppvSigBlob, pcbSigBlob);
int sigType, elemType;
if (parser.GetCallingConvInfo(out sigType) && parser.GetElemType(out elemType))
_enumData.ElementType = (ClrElementType)elemType;
}
// public, static, literal, has default
int intAttr = (int)attr;
if ((int)attr == 0x8056)
{
string name = builder.ToString();
names.Add(name);
int ccinfo;
SigParser parser = new SigParser(ppvSigBlob, pcbSigBlob);
parser.GetCallingConvInfo(out ccinfo);
int elemType;
parser.GetElemType(out elemType);
Type type = ClrRuntime.GetTypeForElementType((ClrElementType)pdwCPlusTypeFlag);
if (type != null)
{
object o = System.Runtime.InteropServices.Marshal.PtrToStructure(ppValue, type);
_enumData.NameToValue[name] = o;
_enumData.ValueToName[o] = name;
}
}
}
} while (fields.Length == tokens);
import.CloseEnum(hnd);
}
public DesktopInstanceField(DesktopGCHeap heap, IFieldData data, string name, FieldAttributes attributes, IntPtr sig, int sigLen)
{
_name = name;
_field = data;
_attributes = attributes;
ulong mt = data.TypeMethodTable;
if (mt != 0)
_type = (BaseDesktopHeapType)heap.GetTypeByTypeHandle(mt, 0);
if (_type == null)
{
if (sig != IntPtr.Zero && sigLen > 0)
{
SigParser sigParser = new SigParser(sig, sigLen);
bool res;
int sigType, etype = 0;
if (res = sigParser.GetCallingConvInfo(out sigType))
Debug.Assert(sigType == SigParser.IMAGE_CEE_CS_CALLCONV_FIELD);
res = res && sigParser.SkipCustomModifiers();
res = res && sigParser.GetElemType(out etype);
if (res)
{
ClrElementType type = (ClrElementType)etype;
if (type == ClrElementType.Array)
{
res = sigParser.PeekElemType(out etype);
res = res && sigParser.SkipExactlyOne();
int ranks = 0;
res = res && sigParser.GetData(out ranks);
if (res)
_type = heap.GetArrayType((ClrElementType)etype, ranks, null);
}
else if (type == ClrElementType.SZArray)
{
res = sigParser.PeekElemType(out etype);
type = (ClrElementType)etype;
if (DesktopRuntimeBase.IsObjectReference(type))
_type = (BaseDesktopHeapType)heap.GetBasicType(ClrElementType.SZArray);
else
_type = (BaseDesktopHeapType)heap.GetArrayType(type, -1, null);
}
else if (type == ClrElementType.Pointer)
{
// Only deal with single pointers for now and types that have already been constructed
res = sigParser.GetElemType(out etype);
type = (ClrElementType)etype;
int token;
sigParser.GetToken(out token);
BaseDesktopHeapType innerType = (BaseDesktopHeapType)heap.GetGCHeapTypeFromModuleAndToken(data.Module, Convert.ToUInt32(token));
if (innerType == null)
{
innerType = (BaseDesktopHeapType)heap.GetBasicType(type);
}
_type = heap.CreatePointerType(innerType, type, null);
}
}
}
if (_type == null)
_type = (BaseDesktopHeapType)heap.GetBasicType(ElementType);
}
else if (ElementType != ClrElementType.Class)
{
_type.ElementType = ElementType;
}
}
