Пример #1
0
        public static void Fill_TypeDef(tMD_TypeDef *pTypeDef,
                                        tMD_TypeDef **ppClassTypeArgs, tMD_TypeDef **ppMethodTypeArgs,
                                        uint resolve = Type.TYPE_FILL_ALL)
        {
            /*IDX_TABLE*/ uint firstIdx, lastIdx, token;
            uint         instanceMemSize, staticMemSize, virtualOfs, isDeferred, i, j;
            tMetaData *  pMetaData = pTypeDef->pMetaData;
            tMD_TypeDef *pParent;

            if (pTypeDef->fillState >= resolve)
            {
                return;
            }

            if (pTypeDef->monoType != null)
            {
                MonoType.Fill_TypeDef(pTypeDef, ppClassTypeArgs, ppMethodTypeArgs, resolve);
                return;
            }

//            Sys.printf("FILLING TYPE: %s\n", (PTR)pTypeDef->name);
//            string name = System.Runtime.InteropServices.Marshal.PtrToStringAnsi((System.IntPtr)pTypeDef->name);


            if (typesToFill == null)
            {
                Fill_StartDefer();
                isDeferred = 1;
            }
            else
            {
                isDeferred = 0;
            }

            if (resolve < Type.TYPE_FILL_ALL)
            {
                MetaData.Fill_Defer(pTypeDef, ppClassTypeArgs, ppMethodTypeArgs);
            }

            MetaData.Fill_GetDeferredTypeArgs(pTypeDef, ref ppClassTypeArgs, ref ppMethodTypeArgs);

            // Fill parent info
            if (pTypeDef->fillState < Type.TYPE_FILL_PARENTS)
            {
                pTypeDef->fillState = Type.TYPE_FILL_PARENTS;

                pTypeDef->pTypeDef = pTypeDef;
                if (pTypeDef->alignment == 0)
                {
                    pTypeDef->alignment = 1;
                }

                if (pTypeDef->pParent == null)
                {
                    pTypeDef->pParent = MetaData.GetTypeDefFromDefRefOrSpec(pMetaData, pTypeDef->extends, ppClassTypeArgs, ppMethodTypeArgs);
                }
                pParent = pTypeDef->pParent;

                if (pParent != null)
                {
                    if (pParent->fillState < Type.TYPE_FILL_PARENTS)
                    {
                        MetaData.Fill_TypeDef(pParent, null, null, Type.TYPE_FILL_PARENTS);
                    }
                    else if (pParent->fillState < Type.TYPE_FILL_ALL)
                    {
                        MetaData.Fill_Defer(pParent, null, null);
                    }
                    pTypeDef->hasMonoBase = pParent->hasMonoBase;
                    if (pParent->hasMonoBase == 0)
                    {
                        // If we have a mono base type, we have at least 1 non-blittable field
                        pTypeDef->blittable      = pParent->blittable;
                        pTypeDef->fixedBlittable = pParent->fixedBlittable;
                    }
                    else
                    {
                        pTypeDef->blittable = pTypeDef->fixedBlittable = 0;
                    }
                }
                else
                {
                    pTypeDef->blittable = pTypeDef->fixedBlittable = 1;
                }

                // If this type is an interface, then return 0
                if (pTypeDef->stackSize != 0)
                {
                    pTypeDef->isValueType = (byte)(pTypeDef->stackType != EvalStack.EVALSTACK_O ? 1 : 0);
                }
                else if (MetaData.TYPE_ISINTERFACE(pTypeDef))
                {
                    pTypeDef->isValueType = 0;
                }
                else if (pTypeDef->nameSpace[0] == 'S' && S.strcmp(pTypeDef->nameSpace, new S(ref scSystem, "System")) == 0)
                {
                    if ((pTypeDef->name[0] == 'V' && S.strcmp(pTypeDef->name, new S(ref scValueType, "ValueType")) == 0) ||
                        (pTypeDef->name[0] == 'E' && S.strcmp(pTypeDef->name, new S(ref scEnum, "Enum")) == 0))
                    {
                        pTypeDef->isValueType = 1;
                    }
                    else if (pTypeDef->name[0] == 'O' && S.strcmp(pTypeDef->name, new S(ref scObject, "Object")) == 0)
                    {
                        pTypeDef->isValueType = 0;
                    }
                    else if (pParent != null)
                    {
                        pTypeDef->isValueType = pParent->isValueType;
                    }
                }
                else if (pParent != null)
                {
                    pTypeDef->isValueType = pParent->isValueType;
                }

                // If not primed, then work out how many methods & fields there are.
                if (pTypeDef->isPrimed == 0)
                {
                    // Methods
                    lastIdx = (pTypeDef->isLast != 0) ?
                              MetaData.MAKE_TABLE_INDEX(MetaDataTable.MD_TABLE_METHODDEF, pTypeDef->pMetaData->tables.numRows[MetaDataTable.MD_TABLE_METHODDEF]) :
                              (pTypeDef[1].methodList - 1);
                    pTypeDef->numMethods = lastIdx - pTypeDef->methodList + 1;
                    // Fields
                    lastIdx = (pTypeDef->isLast != 0) ?
                              MetaData.MAKE_TABLE_INDEX(MetaDataTable.MD_TABLE_FIELDDEF, pTypeDef->pMetaData->tables.numRows[MetaDataTable.MD_TABLE_FIELDDEF]) :
                              (pTypeDef[1].fieldList - 1);
                    pTypeDef->numFields = lastIdx - pTypeDef->fieldList + 1;
                }

                // If this is a nested type, then find the namespace of it
                if (pTypeDef->pNestedIn != null)
                {
                    tMD_TypeDef *pRootTypeDef = pTypeDef->pNestedIn;
                    while (pRootTypeDef->pNestedIn != null)
                    {
                        pRootTypeDef = pRootTypeDef->pNestedIn;
                    }
                    pTypeDef->nameSpace = pRootTypeDef->nameSpace;
                }

                // If this is an enum type, then pretend its stack type is its underlying type
                if (pTypeDef->pParent == Type.types[Type.TYPE_SYSTEM_ENUM])
                {
                    pTypeDef->stackType        = EvalStack.EVALSTACK_INT32;
                    pTypeDef->stackSize        = sizeof(PTR);
                    pTypeDef->instanceMemSize  = 4;
                    pTypeDef->arrayElementSize = 4;
                    pTypeDef->blittable        = pTypeDef->fixedBlittable = 1;
                }

                if (pTypeDef->fillState >= resolve)
                {
                    return;
                }
            }
            else
            {
                pParent = pTypeDef->pParent;
            }

            if (pTypeDef->fillState < Type.TYPE_FILL_LAYOUT)
            {
                pTypeDef->fillState = Type.TYPE_FILL_LAYOUT;

                if (pParent != null)
                {
                    if (pParent->fillState < Type.TYPE_FILL_LAYOUT)
                    {
                        MetaData.Fill_TypeDef(pParent, null, null, Type.TYPE_FILL_LAYOUT);
                    }
                    else if (pParent->fillState < Type.TYPE_FILL_ALL)
                    {
                        MetaData.Fill_Defer(pParent, null, null);
                    }
                }

                if (pTypeDef->isGenericDefinition == 0)
                {
                    // Resolve fields, members, interfaces.
                    // Only needs to be done if it's not a generic definition type

                    // It it's not a value-type and the stack-size is not preset, then set it up now.
                    // It needs to be done here as non-static fields in non-value type can point to the containing type
                    if (pTypeDef->stackSize == 0 && pTypeDef->isValueType == 0)
                    {
                        pTypeDef->stackType = EvalStack.EVALSTACK_O;
                        pTypeDef->stackSize = sizeof(PTR);
                        pTypeDef->alignment = sizeof(PTR);
                    }

                    // Resolve all fields - instance ONLY at this point,
                    // because static fields in value-Type.types can be of the containing type, and the size is not yet known.
                    firstIdx      = pTypeDef->fieldList;
                    lastIdx       = firstIdx + pTypeDef->numFields - 1;
                    staticMemSize = 0;
                    if (pTypeDef->numFields > 0)
                    {
                        pTypeDef->ppFields = (tMD_FieldDef **)Mem.mallocForever((SIZE_T)(pTypeDef->numFields * sizeof(tMD_FieldDef *)));
                    }
                    instanceMemSize = (pParent == null ? 0 : pTypeDef->pParent->instanceMemSize);
                    if (pTypeDef->hasMonoBase != 0 && pParent->hasMonoBase == 0)
                    {
                        // Some DNA types like String are actually wrappers around mono objects.  In those cases, we need to allocate the
                        // space in the instance memory for the GCHandle to the mono object.  We distinguish this case from the case
                        // where we're just extending a Mono Type object by checking if the parent also has the hasMonoBase flag set.
                        instanceMemSize += (uint)sizeof(void *);
                    }
                    for (token = firstIdx, i = 0; token <= lastIdx; token++, i++)
                    {
                        tMD_FieldDef *pFieldDef;

                        pFieldDef = MetaData.GetFieldDefFromDefOrRef(pMetaData, token, ppClassTypeArgs, ppMethodTypeArgs);
                        if (!MetaData.FIELD_ISSTATIC(pFieldDef))
                        {
                            // Only handle non-static fields at the moment
                            if (pTypeDef->pGenericDefinition != null)
                            {
                                // If this is a generic instantiation type, then all field defs need to be copied,
                                // as there will be lots of different instantiations.
                                tMD_FieldDef *pFieldCopy = ((tMD_FieldDef *)Mem.mallocForever((SIZE_T)sizeof(tMD_FieldDef)));
                                Mem.memcpy(pFieldCopy, pFieldDef, (SIZE_T)sizeof(tMD_FieldDef));
                                pFieldDef = pFieldCopy;
                            }
                            if (MetaData.FIELD_ISLITERAL(pFieldDef) || MetaData.FIELD_HASFIELDRVA(pFieldDef))
                            {
                                // If it's a literal, then analyse the field, but don't include it in any memory allocation
                                // If is has an RVA, then analyse the field, but don't include it in any memory allocation
                                MetaData.Fill_FieldDef(pTypeDef, pFieldDef, 0, null, ppClassTypeArgs);
                            }
                            else
                            {
                                MetaData.Fill_FieldDef(pTypeDef, pFieldDef, instanceMemSize, &(pTypeDef->alignment), ppClassTypeArgs);
                                instanceMemSize = pFieldDef->memOffset + pFieldDef->memSize;
                            }
                            // Update blittable and fixedBlittable status for type - if any non-blittable fields are included set to 0
                            if (pTypeDef->blittable != 0 || pTypeDef->fixedBlittable != 0)
                            {
                                if (pFieldDef->pType->isValueType == 0 || pFieldDef->pType->blittable == 0)
                                {
                                    pTypeDef->blittable = pTypeDef->fixedBlittable = 0;
                                }
                                else if (pFieldDef->pType->typeInitId == Type.TYPE_SYSTEM_INTPTR ||
                                         pFieldDef->pType->typeInitId == Type.TYPE_SYSTEM_UINTPTR)
                                {
                                    pTypeDef->fixedBlittable = 0;
                                }
                            }
                            pTypeDef->ppFields[i] = pFieldDef;
                        }
                    }
                    if (pTypeDef->instanceMemSize == 0)
                    {
                        pTypeDef->instanceMemSize = (instanceMemSize + (pTypeDef->alignment - 1)) & ~(pTypeDef->alignment - 1);
                    }

                    // Sort out stack type and size.
                    // Note that this may already be set, as some basic type have this preset;
                    // or if it's not a value-type it'll already be set
                    if (pTypeDef->stackSize == 0)
                    {
                        // if it gets here then it must be a value type
                        pTypeDef->stackType = EvalStack.EVALSTACK_VALUETYPE;
                        pTypeDef->stackSize = pTypeDef->instanceMemSize;
                    }

                    // Sort out array element size. Note that some basic type will have this preset.
                    if (pTypeDef->arrayElementSize == 0)
                    {
                        pTypeDef->arrayElementSize = pTypeDef->stackSize;
                    }

                    // Make sure stack size is even multiple of stack alignment
                    pTypeDef->stackSize = (pTypeDef->stackSize + (STACK_ALIGNMENT - 1)) & ~(STACK_ALIGNMENT - 1);

                    // Handle static fields
                    for (token = firstIdx, i = 0; token <= lastIdx; token++, i++)
                    {
                        tMD_FieldDef *pFieldDef;

                        pFieldDef = MetaData.GetFieldDefFromDefOrRef(pMetaData, token, ppClassTypeArgs, ppMethodTypeArgs);
                        if (MetaData.FIELD_ISSTATIC(pFieldDef))
                        {
                            // Only handle static fields here
                            if (pTypeDef->pGenericDefinition != null)
                            {
                                // If this is a generic instantiation type, then all field defs need to be copied,
                                // as there will be lots of different instantiations.
                                tMD_FieldDef *pFieldCopy = ((tMD_FieldDef *)Mem.mallocForever((SIZE_T)sizeof(tMD_FieldDef)));
                                Mem.memcpy(pFieldCopy, pFieldDef, (SIZE_T)sizeof(tMD_FieldDef));
                                pFieldDef = pFieldCopy;
                            }
                            if (MetaData.FIELD_ISLITERAL(pFieldDef) || MetaData.FIELD_HASFIELDRVA(pFieldDef))
                            {
                                // If it's a literal, then analyse the field, but don't include it in any memory allocation
                                // If is has an RVA, then analyse the field, but don't include it in any memory allocation
                                MetaData.Fill_FieldDef(pTypeDef, pFieldDef, 0, null, ppClassTypeArgs);
                            }
                            else
                            {
                                MetaData.Fill_FieldDef(pTypeDef, pFieldDef, staticMemSize, null, ppClassTypeArgs);
                                staticMemSize += pFieldDef->memSize;
                            }
                            pTypeDef->ppFields[i] = pFieldDef;
                        }
                    }

                    if (staticMemSize > 0)
                    {
                        pTypeDef->pStaticFields = (byte *)Mem.mallocForever((SIZE_T)staticMemSize);
                        Mem.memset(pTypeDef->pStaticFields, 0, staticMemSize);
                        // Set the field addresses (->pMemory) of all static fields
                        for (i = 0; i < pTypeDef->numFields; i++)
                        {
                            tMD_FieldDef *pFieldDef;

                            pFieldDef = pTypeDef->ppFields[i];
                            if (MetaData.FIELD_ISSTATIC(pFieldDef) && pFieldDef->pMemory == null)
                            {
                                // Only set it if it isn't already set. It will be already set if this field has an RVA
                                pFieldDef->pMemory = pTypeDef->pStaticFields + pFieldDef->memOffset;
                            }
                        }
                        pTypeDef->staticFieldSize = staticMemSize;
                    }
                }

                if (pTypeDef->fillState >= resolve)
                {
                    return;
                }
            }

            // This only needs to be done for non-generic Type.types, or for generic type that are not a definition
            // I.e. Fully instantiated generic Type.types
            if (pTypeDef->fillState < Type.TYPE_FILL_VTABLE)
            {
                pTypeDef->fillState = Type.TYPE_FILL_VTABLE;

                if (pParent != null)
                {
                    if (pParent->fillState < Type.TYPE_FILL_VTABLE)
                    {
                        MetaData.Fill_TypeDef(pParent, null, null, Type.TYPE_FILL_VTABLE);
                    }
                    else if (pParent->fillState < Type.TYPE_FILL_ALL)
                    {
                        MetaData.Fill_Defer(pParent, null, null);
                    }
                }

                if (pTypeDef->isGenericDefinition == 0)
                {
                    virtualOfs = (pParent != null) ? pParent->numVirtualMethods : 0;

                    // Must create the virtual method table BEFORE any other type resolution is done
                    // Note that this must not do ANY filling of type or methods.
                    // This is to ensure that the parent object(s) in any type inheritance hierachy are allocated
                    // their virtual method offset before derived Type.types.
                    firstIdx = pTypeDef->methodList;
                    lastIdx  = firstIdx + pTypeDef->numMethods - 1;
                    for (token = firstIdx; token <= lastIdx; token++)
                    {
                        tMD_MethodDef *pMethodDef;

                        pMethodDef = MetaData.GetMethodDefFromDefRefOrSpec(pMetaData, token, ppClassTypeArgs, ppMethodTypeArgs);

                        //Sys.printf("Method: %s\n", (PTR)pMethodDef->name);

                        // This is needed, so array resolution can work correctly and FindVirtualOverriddenMethod() can work.
                        pMethodDef->pParentType = pTypeDef;

                        if (MetaData.METHOD_ISVIRTUAL(pMethodDef))
                        {
                            if (MetaData.METHOD_ISNEWSLOT(pMethodDef) || pTypeDef->pParent == null)
                            {
                                // Allocate a new vTable slot if method is explicitly marked as NewSlot, or
                                // this is of type Object.
                                pMethodDef->vTableOfs = virtualOfs++;
                            }
                            else
                            {
                                tMD_MethodDef *pVirtualOveriddenMethod;
                                pVirtualOveriddenMethod = FindVirtualOverriddenMethod(pTypeDef->pParent, pMethodDef);
                                if (pVirtualOveriddenMethod == null)
                                {
                                    Sys.Crash("Unable to find virtual override method for %s %s", (PTR)pTypeDef->name, (PTR)pMethodDef->name);
                                }
                                pMethodDef->vTableOfs = pVirtualOveriddenMethod->vTableOfs;
                            }
                        }
                        else
                        {
                            // Dummy value - make it obvious it's not valid!
                            pMethodDef->vTableOfs = 0xffffffff;
                        }
                    }

                    // Create the virtual method table
                    pTypeDef->numVirtualMethods = virtualOfs;

                    // Resolve all members
                    firstIdx            = pTypeDef->methodList;
                    lastIdx             = firstIdx + pTypeDef->numMethods - 1;
                    pTypeDef->ppMethods = (tMD_MethodDef **)Mem.mallocForever((SIZE_T)(pTypeDef->numMethods * sizeof(tMD_MethodDef *)));
                    pTypeDef->pVTable   = (tMD_MethodDef **)Mem.mallocForever((SIZE_T)(pTypeDef->numVirtualMethods * sizeof(tMD_MethodDef *)));
                    // Copy initial vTable from parent
                    if (pTypeDef->pParent != null)
                    {
                        if (pTypeDef->pParent->fillState != Type.TYPE_FILL_MEMBERS)
                        {
                            Fill_TypeDef(pTypeDef->pParent, null, null, Type.TYPE_FILL_MEMBERS);
                        }
                        Mem.memcpy(pTypeDef->pVTable, pTypeDef->pParent->pVTable, (SIZE_T)(pTypeDef->pParent->numVirtualMethods * sizeof(tMD_MethodDef *)));
                    }
                    for (token = firstIdx, i = 0; token <= lastIdx; token++, i++)
                    {
                        tMD_MethodDef *pMethodDef;

                        pMethodDef = MetaData.GetMethodDefFromDefRefOrSpec(pMetaData, token, ppClassTypeArgs, ppMethodTypeArgs);
                        if (pTypeDef->pGenericDefinition != null)
                        {
                            // If this is a generic instantiation type, then all method defs need to be copied,
                            // as there will be lots of different instantiations.
                            tMD_MethodDef *pMethodCopy = ((tMD_MethodDef *)Mem.mallocForever((SIZE_T)sizeof(tMD_MethodDef)));
                            Mem.memcpy(pMethodCopy, pMethodDef, (SIZE_T)sizeof(tMD_MethodDef));
                            pMethodDef = pMethodCopy;
                        }
                        if (MetaData.METHOD_ISSTATIC(pMethodDef) && S.strcmp(pMethodDef->name, ".cctor") == 0)
                        {
                            // This is a static constructor
                            pTypeDef->pStaticConstructor = pMethodDef;
                        }
                        if (!MetaData.METHOD_ISSTATIC(pMethodDef) && pTypeDef->pParent != null &&
                            S.strcmp(pMethodDef->name, "Finalize") == 0)
                        {
                            // This is a Finalizer method, but not for Object.
                            // Delibrately miss out Object's Finalizer because it's empty and will cause every object
                            // of any type to have a Finalizer which will be terrible for performance.
                            pTypeDef->pFinalizer = pMethodDef;
                        }
                        if (MetaData.METHOD_ISVIRTUAL(pMethodDef))
                        {
                            // This is a virtual method, so enter it in the vTable
                            pTypeDef->pVTable[pMethodDef->vTableOfs] = pMethodDef;
                        }
                        pTypeDef->ppMethods[i] = pMethodDef;
                    }
                    // Find inherited Finalizer, if this type doesn't have an explicit Finalizer, and if there is one
                    if (pTypeDef->pFinalizer == null)
                    {
                        tMD_TypeDef *pInheritedType = pTypeDef->pParent;
                        while (pInheritedType != null)
                        {
                            if (pInheritedType->pFinalizer != null)
                            {
                                pTypeDef->pFinalizer = pInheritedType->pFinalizer;
                                break;
                            }
                            pInheritedType = pInheritedType->pParent;
                        }
                    }
                }

                if (pTypeDef->fillState >= resolve)
                {
                    return;
                }
            }

            if (pTypeDef->fillState < Type.TYPE_FILL_MEMBERS)
            {
                pTypeDef->fillState = Type.TYPE_FILL_MEMBERS;

                if (pParent != null)
                {
                    if (pParent->fillState < Type.TYPE_FILL_MEMBERS)
                    {
                        MetaData.Fill_TypeDef(pParent, null, null, Type.TYPE_FILL_MEMBERS);
                    }
                    else if (pParent->fillState < Type.TYPE_FILL_ALL)
                    {
                        MetaData.Fill_Defer(pParent, null, null);
                    }
                }

                if (pTypeDef->isGenericDefinition == 0)
                {
                    // Fill all method definitions for this type
                    for (i = 0; i < pTypeDef->numMethods; i++)
                    {
                        MetaData.Fill_MethodDef(pTypeDef, pTypeDef->ppMethods[i], ppClassTypeArgs, ppMethodTypeArgs);
                    }
                }

                if (pTypeDef->fillState >= resolve)
                {
                    return;
                }
            }

            if (pTypeDef->fillState < Type.TYPE_FILL_INTERFACES)
            {
                pTypeDef->fillState = Type.TYPE_FILL_INTERFACES;

                if (pParent != null)
                {
                    if (pParent->fillState < Type.TYPE_FILL_INTERFACES)
                    {
                        MetaData.Fill_TypeDef(pParent, null, null, Type.TYPE_FILL_INTERFACES);
                    }
                    else if (pParent->fillState < Type.TYPE_FILL_ALL)
                    {
                        MetaData.Fill_Defer(pParent, null, null);
                    }
                }

                if (pTypeDef->isGenericDefinition == 0 && !MetaData.TYPE_ISINTERFACE(pTypeDef))
                {
                    if (pParent != null && pParent->fillState < Type.TYPE_FILL_INTERFACES)
                    {
                        MetaData.Fill_TypeDef(pParent, null, null, Type.TYPE_FILL_INTERFACES);
                    }

                    // Map all interface method calls. This only needs to be done for Classes, not Interfaces
                    // And is not done for generic definitions.
                    firstIdx = 0;
                    if (pTypeDef->pParent != null)
                    {
                        j = pTypeDef->numInterfaces = pTypeDef->pParent->numInterfaces;
                    }
                    else
                    {
                        j = 0;
                    }

                    lastIdx = firstIdx;
                    for (i = 1; i <= pMetaData->tables.numRows[MetaDataTable.MD_TABLE_INTERFACEIMPL]; i++)
                    {
                        tMD_InterfaceImpl *pInterfaceImpl;
                        pInterfaceImpl = (tMD_InterfaceImpl *)MetaData.GetTableRow(pMetaData, MetaData.MAKE_TABLE_INDEX(MetaDataTable.MD_TABLE_INTERFACEIMPL, i));
                        if (pInterfaceImpl->class_ == pTypeDef->tableIndex)
                        {
                            // count how many interfaces are implemented
                            pTypeDef->numInterfaces++;
                            if (firstIdx == 0)
                            {
                                firstIdx = MetaData.MAKE_TABLE_INDEX(MetaDataTable.MD_TABLE_INTERFACEIMPL, i);
                            }
                            lastIdx = MetaData.MAKE_TABLE_INDEX(MetaDataTable.MD_TABLE_INTERFACEIMPL, i);
                        }
                    }

                    if (pTypeDef->numInterfaces > 0)
                    {
                        uint mapNum;

                        pTypeDef->pInterfaceMaps = (tInterfaceMap *)Mem.mallocForever((SIZE_T)(pTypeDef->numInterfaces * sizeof(tInterfaceMap)));
                        // Copy interface maps from parent type
                        if (j > 0)
                        {
                            Mem.memcpy(pTypeDef->pInterfaceMaps, pTypeDef->pParent->pInterfaceMaps, (SIZE_T)(j * sizeof(tInterfaceMap)));
                        }
                        mapNum = j;
                        if (firstIdx > 0)
                        {
                            for (token = firstIdx; token <= lastIdx; token++, mapNum++)
                            {
                                tMD_InterfaceImpl *pInterfaceImpl;

                                pInterfaceImpl = (tMD_InterfaceImpl *)MetaData.GetTableRow(pMetaData, token);
                                if (pInterfaceImpl->class_ == pTypeDef->tableIndex)
                                {
                                    tMD_TypeDef *  pInterface;
                                    tInterfaceMap *pMap;

                                    // Get the interface that this type implements
                                    pInterface = MetaData.GetTypeDefFromDefRefOrSpec(pMetaData, pInterfaceImpl->interface_, ppClassTypeArgs, ppMethodTypeArgs);
                                    MetaData.Fill_TypeDef(pInterface, null, null, Type.TYPE_FILL_INTERFACES);
                                    pMap                  = &pTypeDef->pInterfaceMaps[mapNum];
                                    pMap->pInterface      = pInterface;
                                    pMap->pVTableLookup   = (uint *)Mem.mallocForever((SIZE_T)(pInterface->numVirtualMethods * sizeof(uint)));
                                    pMap->ppMethodVLookup = (tMD_MethodDef **)Mem.mallocForever((SIZE_T)(pInterface->numVirtualMethods * sizeof(tMD_MethodDef *)));
                                    // Discover interface mapping for each interface method
                                    for (i = 0; i < pInterface->numVirtualMethods; i++)
                                    {
                                        tMD_MethodDef *pInterfaceMethod;
                                        tMD_MethodDef *pOverriddenMethod;
                                        pInterfaceMethod         = pInterface->pVTable[i];
                                        pOverriddenMethod        = FindVirtualOverriddenMethod(pTypeDef, pInterfaceMethod);
                                        pMap->pVTableLookup[i]   = pOverriddenMethod->vTableOfs;
                                        pMap->ppMethodVLookup[i] = pOverriddenMethod;
                                    }
                                }
                                else
                                {
                                    Sys.Crash("Problem with interface class");
                                }
                            }
                        }
                    }
                }

                if (pTypeDef->fillState >= resolve)
                {
                    return;
                }
            }

            if (pTypeDef->fillState < Type.TYPE_FILL_ALL)
            {
                pTypeDef->fillState = Type.TYPE_FILL_ALL;

                if (pTypeDef->isGenericDefinition == 0 && pTypeDef->stackSize == 0)
                {
                    j = 0;
                }

                if (pParent != null && pParent->fillState < Type.TYPE_FILL_ALL)
                {
                    MetaData.Fill_TypeDef(pParent, null, null, Type.TYPE_FILL_ALL);
                }

                if (isDeferred != 0)
                {
                    Fill_ResolveDeferred();
                }
            }

            Sys.log_f(2, "Type:  %s.%s\n", (PTR)pTypeDef->nameSpace, (PTR)pTypeDef->name);
        }