public UInt32 Index; // 1 to N, not 0 to N-1.
public MetadataToken(MDTables.Tables table, UInt32 index)
{
System.Diagnostics.Contracts.Contract.Requires((index & 0xFF000000U) == 0);
Table = table;
Index = index;
}
public UInt32 Index; // 1 to N, not 0 to N-1.
public MetadataToken(MDTables.Tables table, UInt32 index)
{
System.Diagnostics.Contracts.Contract.Requires((index & 0xFF000000U) == 0);
Table = table;
Index = index;
}
private TypeInfo ParseTypeDefRefOrSpec(byte[] sig, ref uint i)
{
// The encoded version of this TypeRef token is made follows up:
// 1. encode the table that this token the indexes least significant 2 bits.
// The bit values to use are 0, 1 and 2, specifying the target table is the
// TypeDef, TypeRef or TypeSpec table, respectively
// 2. shift the 3-byte row index (0x000012 in this example) left by 2 bits
// and OR into the 2-bit encoding from step 1;
// 3. compress the resulting value (see Section 22.2)
uint compressed = DecodeInteger(sig, ref i);
uint tableCode = compressed & 0x3;
uint index = (uint)((compressed & (~0x3)) / 4);
MDTables.Tables[] mapToTable = new MDTables.Tables[] { MDTables.Tables.TypeDef, MDTables.Tables.TypeRef, MDTables.Tables.TypeSpec };
MetadataToken token = new MetadataToken(mapToTable[tableCode], index);
switch (tableCode)
{
case 0: // TypeDef
return(new TypeInfo(token, _assembly));
case 1: // TypeRef
return(new TypeInfo(token, _assembly, false)); // TypeRef-specific constructor.
case 2: // TypeSpec
throw new NotImplementedException();
default:
throw new BadImageFormatException(Res.InvalidMetadataToken);
}
}
