internal sealed override uint GetCodedIx(CIx code) 
		{
			switch (code) {
				case (CIx.HasCustomAttr) : return 14; 
				case (CIx.HasDeclSecurity) : return 2; 
			}
			return 0;
		}

 internal override sealed uint GetCodedIx(CIx code)
 {
     switch (code) {
         case (CIx.HasCustomAttr) : return 4;
         case (CIx.HasConstant) : return 1;
         case (CIx.HasFieldMarshal) : return 1;
     }
     return 0;
 }

		internal uint CodedIndexSize(CIx code) 
		{
			if (lgeCIx[(uint)code]) return 4;
			return 2;
		}

 internal uint GetCodedIndex(CIx codedIx)
 {
     if (md.lgeCIx[(int)codedIx]) return ReadUInt32();
     return ReadUInt16();
 }

 internal uint MakeCodedIndex(CIx code, MDTable tab, uint ix)
 {
     ix <<= MetaData.CIxShiftMap[(uint)code];
     ix &= (uint)tab;
     return ix;
 }

 internal MetaDataElement GetCodedElement(CIx code, uint ix)
 {
     uint mask = (uint)MetaData.CIxBitMasks[MetaData.CIxShiftMap[(uint)code]];
     int tabIx = MetaData.CIxTables[(int)code][(ix & mask)];
     ix >>= MetaData.CIxShiftMap[(uint)code];
     if (ix == 0) return null;
     MetaDataElement elem = (MetaDataElement)tables[tabIx][(int)ix-1];
     if ((elem != null) && (elem.unresolved)) {
         elem.Resolve(this);
         elem = (MetaDataElement)tables[tabIx][(int)ix-1];
     }
     return elem;
 }

 internal MDTable CodedTable(CIx code, uint ix)
 {
     uint mask = (uint)MetaData.CIxBitMasks[MetaData.CIxShiftMap[(uint)code]];
     return (MDTable)MetaData.CIxTables[(int)code][(ix & mask)];
 }

 internal uint CodedIndex(CIx code, uint ix)
 {
     ix >>= MetaData.CIxShiftMap[(uint)code];
     return ix;
 }

 internal void WriteCodedIndex(CIx code, MetaDataElement elem) {
   metaData.WriteCodedIndex(code,elem,this);
 }

		internal void WriteCodedIndex(CIx code, MetaDataElement elem, FileImage output) 
		{
			uint ix = 0;
			if (elem != null) { 
				ix = (elem.Row << CIxShiftMap[(uint)code]) | elem.GetCodedIx(code);
				// Console.WriteLine("coded index = " + ix + " row = " + elem.Row);
				//} else {
				// Console.WriteLine("elem for coded index is null");
			}
			if (lgeCIx[(uint)code]) 
				output.Write(ix);
			else
				output.Write((ushort)ix);
		}

 internal void WriteCodedIndex(CIx code, MetaDataElement elem)
 {
     Contract.Requires(elem != null);
     metaData.WriteCodedIndex(code, elem, this);
 }