internal static Attribute GetCustomAttribute(RuntimeType type)
{
if (!StructLayoutAttribute.IsDefined(type))
{
return(null);
}
int num = 0;
int size = 0;
LayoutKind layoutKind = LayoutKind.Auto;
TypeAttributes typeAttributes = type.Attributes & TypeAttributes.LayoutMask;
if (typeAttributes != TypeAttributes.NotPublic)
{
if (typeAttributes != TypeAttributes.SequentialLayout)
{
if (typeAttributes == TypeAttributes.ExplicitLayout)
{
layoutKind = LayoutKind.Explicit;
}
}
else
{
layoutKind = LayoutKind.Sequential;
}
}
else
{
layoutKind = LayoutKind.Auto;
}
CharSet charSet = CharSet.None;
typeAttributes = (type.Attributes & TypeAttributes.StringFormatMask);
if (typeAttributes != TypeAttributes.NotPublic)
{
if (typeAttributes != TypeAttributes.UnicodeClass)
{
if (typeAttributes == TypeAttributes.AutoClass)
{
charSet = CharSet.Auto;
}
}
else
{
charSet = CharSet.Unicode;
}
}
else
{
charSet = CharSet.Ansi;
}
type.GetRuntimeModule().MetadataImport.GetClassLayout(type.MetadataToken, out num, out size);
if (num == 0)
{
num = 8;
}
return(new StructLayoutAttribute(layoutKind, num, size, charSet));
}
internal static Attribute GetCustomAttribute(RuntimeType type)
{
if (!StructLayoutAttribute.IsDefined(type))
{
return((Attribute)null);
}
int packSize = 0;
int classSize = 0;
LayoutKind layoutKind = LayoutKind.Auto;
switch (type.Attributes & TypeAttributes.LayoutMask)
{
case TypeAttributes.NotPublic:
layoutKind = LayoutKind.Auto;
break;
case TypeAttributes.SequentialLayout:
layoutKind = LayoutKind.Sequential;
break;
case TypeAttributes.ExplicitLayout:
layoutKind = LayoutKind.Explicit;
break;
}
CharSet charSet = CharSet.None;
switch (type.Attributes & TypeAttributes.StringFormatMask)
{
case TypeAttributes.NotPublic:
charSet = CharSet.Ansi;
break;
case TypeAttributes.UnicodeClass:
charSet = CharSet.Unicode;
break;
case TypeAttributes.AutoClass:
charSet = CharSet.Auto;
break;
}
type.GetRuntimeModule().MetadataImport.GetClassLayout(type.MetadataToken, out packSize, out classSize);
if (packSize == 0)
{
packSize = 8;
}
return((Attribute) new StructLayoutAttribute(layoutKind, packSize, classSize, charSet));
}
private void SetStructLayoutPseudoCustomAttribute(CustomAttributeBuilder customBuilder)
{
object val = customBuilder.GetConstructorArgument(0);
LayoutKind layout;
if (val is short)
{
layout = (LayoutKind)(short)val;
}
else
{
layout = (LayoutKind)val;
}
StructLayoutAttribute attr = new StructLayoutAttribute(layout);
attr.Pack = (int?)customBuilder.GetFieldValue("Pack") ?? 0;
attr.Size = (int?)customBuilder.GetFieldValue("Size") ?? 0;
attr.CharSet = customBuilder.GetFieldValue<CharSet>("CharSet") ?? CharSet.None;
attribs &= ~TypeAttributes.LayoutMask;
switch (attr.Value)
{
case LayoutKind.Auto:
attribs |= TypeAttributes.AutoLayout;
break;
case LayoutKind.Explicit:
attribs |= TypeAttributes.ExplicitLayout;
break;
case LayoutKind.Sequential:
attribs |= TypeAttributes.SequentialLayout;
break;
}
attribs &= ~TypeAttributes.StringFormatMask;
switch (attr.CharSet)
{
case CharSet.None:
case CharSet.Ansi:
attribs |= TypeAttributes.AnsiClass;
break;
case CharSet.Auto:
attribs |= TypeAttributes.AutoClass;
break;
case CharSet.Unicode:
attribs |= TypeAttributes.UnicodeClass;
break;
}
pack = (short)attr.Pack;
size = attr.Size;
hasLayout = pack != 0 || size != 0;
}
internal StructLayoutAttribute GetStructLayoutAttribute ()
{
LayoutKind kind;
if (IsLayoutSequential)
kind = LayoutKind.Sequential;
else if (IsExplicitLayout)
kind = LayoutKind.Explicit;
else
kind = LayoutKind.Auto;
StructLayoutAttribute attr = new StructLayoutAttribute (kind);
if (IsUnicodeClass)
attr.CharSet = CharSet.Unicode;
else if (IsAnsiClass)
attr.CharSet = CharSet.Ansi;
else
attr.CharSet = CharSet.Auto;
if (kind != LayoutKind.Auto)
GetPacking (out attr.Pack, out attr.Size);
return attr;
}
internal StructLayoutAttribute GetStructLayoutAttribute ()
{
LayoutKind kind;
if (IsLayoutSequential)
kind = LayoutKind.Sequential;
else if (IsExplicitLayout)
kind = LayoutKind.Explicit;
else
kind = LayoutKind.Auto;
StructLayoutAttribute attr = new StructLayoutAttribute (kind);
if (IsUnicodeClass)
attr.CharSet = CharSet.Unicode;
else if (IsAnsiClass)
attr.CharSet = CharSet.Ansi;
else
attr.CharSet = CharSet.Auto;
if (kind != LayoutKind.Auto) {
int packing;
GetPacking (out packing, out attr.Size);
// 0 means no data provided, we end up with default value
if (packing != 0)
attr.Pack = packing;
}
return attr;
}
public static void ValidateAttribute(StructLayoutAttribute atrib, LayoutKind kind, CharSet charset, int pack)
{
Assert.Equal(atrib.Value, kind);
Assert.Equal(atrib.CharSet, charset);
Assert.Equal(atrib.Pack, pack);
}
