void EmitFieldSize(int buffer_size)
{
int type_size = BuiltinTypeSpec.GetSize(MemberType);
if (buffer_size > int.MaxValue / type_size)
{
Report.Error(1664, Location, "Fixed size buffer `{0}' of length `{1}' and type `{2}' exceeded 2^31 limit",
GetSignatureForError(), buffer_size.ToString(), MemberType.GetSignatureForError());
return;
}
AttributeEncoder encoder;
MethodSpec ctor;
var char_set = CharSetValue ?? Module.DefaultCharSet ?? 0;
#if STATIC
//
// Set struct layout without resolving StructLayoutAttribute which is not always available
//
TypeAttributes attribs = TypeAttributes.SequentialLayout;
switch (char_set)
{
case CharSet.None:
case CharSet.Ansi:
attribs |= TypeAttributes.AnsiClass;
break;
case CharSet.Auto:
attribs |= TypeAttributes.AutoClass;
break;
case CharSet.Unicode:
attribs |= TypeAttributes.UnicodeClass;
break;
}
fixed_buffer_type.__SetAttributes(fixed_buffer_type.Attributes | attribs);
fixed_buffer_type.__SetLayout(0, buffer_size * type_size);
#else
ctor = Module.PredefinedMembers.StructLayoutAttributeCtor.Resolve(Location);
if (ctor == null)
{
return;
}
var field_size = Module.PredefinedMembers.StructLayoutSize.Resolve(Location);
var field_charset = Module.PredefinedMembers.StructLayoutCharSet.Resolve(Location);
if (field_size == null || field_charset == null)
{
return;
}
encoder = new AttributeEncoder();
encoder.Encode((short)LayoutKind.Sequential);
encoder.EncodeNamedArguments(
new [] { field_size, field_charset },
new Constant [] {
new IntConstant(Compiler.BuiltinTypes, buffer_size * type_size, Location),
new IntConstant(Compiler.BuiltinTypes, (int)char_set, Location)
}
);
fixed_buffer_type.SetCustomAttribute((ConstructorInfo)ctor.GetMetaInfo(), encoder.ToArray(out _));
#endif
//
// Don't emit FixedBufferAttribute attribute for private types
//
if ((ModFlags & Modifiers.PRIVATE) != 0)
{
return;
}
ctor = Module.PredefinedMembers.FixedBufferAttributeCtor.Resolve(Location);
if (ctor == null)
{
return;
}
encoder = new AttributeEncoder();
encoder.EncodeTypeName(MemberType);
encoder.Encode(buffer_size);
encoder.EncodeEmptyNamedArguments();
FieldBuilder.SetCustomAttribute((ConstructorInfo)ctor.GetMetaInfo(), encoder.ToArray(out var references));
Module.AddAssemblyReferences(references);
}
