IsInstanceOfInterface()

static unsafe object System.Runtime.CompilerServices.CastHelpers.IsInstanceOfInterface ( void * toTypeHnd, object obj )

inlinestaticprivate

Definition at line 142 of file CastHelpers.cs.

    {
        MethodTable* methodTable;
        nint num;
        MethodTable** ptr;
        if (obj != null)
        {
            methodTable = RuntimeHelpers.GetMethodTable(obj);
            num = methodTable->InterfaceCount;
            if (num == 0)
            {
                goto IL_0083;
            }
            ptr = methodTable->InterfaceMap;
            if (num < 4)
            {
                goto IL_006c;
            }
            while (*ptr != toTypeHnd && ptr[1] != toTypeHnd && ptr[2] != toTypeHnd && ptr[3] != toTypeHnd)
            {
                ptr += 4;
                num -= 4;
                if (num >= 4)
                {
                    continue;
                }
                goto IL_0069;
            }
        }
        goto IL_008e;
        IL_006c:
        while (*ptr != toTypeHnd)
        {
            ptr++;
            num--;
            if (num > 0)
            {
                continue;
            }
            goto IL_0083;
        }
        goto IL_008e;
        IL_0083:
        if (!methodTable->NonTrivialInterfaceCast)
        {
            obj = null;
            goto IL_008e;
        }
        return IsInstance_Helper(toTypeHnd, obj);
        IL_008e:
        return obj;
        IL_0069:
        if (num != 0)
        {
            goto IL_006c;
        }
        goto IL_0083;
    }

References System.Runtime.CompilerServices.RuntimeHelpers.GetMethodTable(), System.Runtime.CompilerServices.MethodTable.InterfaceCount, System.Runtime.CompilerServices.MethodTable.InterfaceMap, System.Runtime.CompilerServices.CastHelpers.IsInstance_Helper(), System.Runtime.CompilerServices.MethodTable.NonTrivialInterfaceCast, and System.obj.