/// <summary>
/// Read a method that describes the type system to metadata mappings.
/// </summary>
private void ReadMetadataMethod(MethodIL methodOfMappings, Dictionary <MetadataType, int> typeMappings, Dictionary <MethodDesc, int> methodMappings, Dictionary <FieldDesc, int> fieldMappings, HashSet <ModuleDesc> metadataModules)
{
ILStreamReader il = new ILStreamReader(methodOfMappings);
// structure is
// REPEAT N TIMES
// ldtoken type/method/field OR ldc.i4 0. If ldtoken instruction is replaced with a ldc.i4, skip this entry
// ldc.i4 metadata value
// pop
// pop
while (true)
{
if (il.TryReadRet()) // ret
{
break;
}
TypeSystemEntity tse;
if (il.TryReadLdtokenAsTypeSystemEntity(out tse))
{
int metadataTokenValue = il.ReadLdcI4();
il.ReadPop();
il.ReadPop();
if (tse is MetadataType)
{
MetadataType type = (MetadataType)tse;
metadataModules.Add(type.Module);
typeMappings.Add(type, metadataTokenValue);
}
else if (tse is MethodDesc)
{
MethodDesc method = (MethodDesc)tse;
// Finalizers are called via a field on the EEType. They should not be reflectable.
if (!method.IsFinalizer)
{
metadataModules.Add(((MetadataType)method.OwningType).Module);
methodMappings.Add(method, metadataTokenValue);
}
}
else if (tse is FieldDesc)
{
FieldDesc field = (FieldDesc)tse;
metadataModules.Add(((MetadataType)field.OwningType).Module);
fieldMappings.Add(field, metadataTokenValue);
}
}
else
{
int deadLdtokenSignifier = il.ReadLdcI4();
Debug.Assert(deadLdtokenSignifier == 0);
il.ReadLdcI4();
il.ReadPop();
il.ReadPop();
}
}
}
/// <summary>
/// Read a method that describes the type system to metadata mappings.
/// </summary>
private void ReadMetadataMethod(MethodIL methodOfMappings, out List <MetadataMapping <MetadataType> > typeMappings, out List <MetadataMapping <MethodDesc> > methodMappings, out List <MetadataMapping <FieldDesc> > fieldMappings, ref HashSet <ModuleDesc> metadataModules)
{
typeMappings = new List <MetadataMapping <MetadataType> >();
methodMappings = new List <MetadataMapping <MethodDesc> >();
fieldMappings = new List <MetadataMapping <FieldDesc> >();
ILStreamReader il = new ILStreamReader(methodOfMappings);
// structure is
// REPEAT N TIMES
// ldtoken type/method/field OR ldc.i4 0. If ldtoken instruction is replaced with a ldc.i4, skip this entry
// ldc.i4 metadata value
// pop
// pop
while (true)
{
if (il.TryReadRet()) // ret
{
break;
}
TypeSystemEntity tse;
if (il.TryReadLdtokenAsTypeSystemEntity(out tse))
{
int metadataTokenValue = il.ReadLdcI4();
il.ReadPop();
il.ReadPop();
if (tse is MetadataType)
{
MetadataType type = (MetadataType)tse;
metadataModules.Add(type.Module);
typeMappings.Add(new MetadataMapping <MetadataType>(type, metadataTokenValue));
}
else if (tse is MethodDesc)
{
MethodDesc method = (MethodDesc)tse;
metadataModules.Add(((MetadataType)method.OwningType).Module);
methodMappings.Add(new MetadataMapping <MethodDesc>(method, metadataTokenValue));
}
else if (tse is FieldDesc)
{
FieldDesc field = (FieldDesc)tse;
metadataModules.Add(((MetadataType)field.OwningType).Module);
fieldMappings.Add(new MetadataMapping <FieldDesc>(field, metadataTokenValue));
}
}
else
{
int deadLdtokenSignifier = il.ReadLdcI4();
Debug.Assert(deadLdtokenSignifier == 0);
il.ReadLdcI4();
il.ReadPop();
il.ReadPop();
}
}
}