Recursive struct do not work

Templates/Scripts
1

Documentation claims they are supported with forward declaration but it is not the case:

typedef struct
{
    EPropertyType MappingType;
    if (MappingType != 0xFF)
    {
        if (MappingType == EnumProperty)
        {
            Property Inner;  // ERROR
        }
        elsef if (MappingType == EPropertyType::EnumAsByteProperty)
        {
        }
        
    };
} Property <optimize=false>;
2

010 Editor does support recursive structs but you have to do a forward declaration by including this line before the struct declaration:

struct Property;

For example:

struct Property;
    
typedef struct
{
    ...
    Property inner;
    ...
} Property <optimize=false>;

Let us know if you can’t get it to work. Cheers!

Graeme
SweetScape Software

3

I am glad that I came across this post, as it isn’t exactly clear how to forward-delare a typedef from the docs.

I also want to add that trying to do the following, which I tried before, crashes the whole editor:

typedef struct Property;
    
typedef struct
{
    ...
    Property inner;
    ...
} Property <optimize=false>;

Generally, I prefer the typdef variant because I can add attributes etc. to the value, which does not seem to work for “normal” structs.

4

We are missing an example in the help file about using recursive structs and typedefs and we’ll get one added. I believe we have the crash fixed now for the code you sent and we’ll get the fix into our next release.

Graeme
SweetScape Software

1 Like