Programmatically read the definitions of a custom storage class in a custom package

Hello,

I've been trying to programatically read the custom storage class definitions of a custom package.

My first issue is that I could not find any way to directly load my package CustomDataClass but I need to create a Simulink data dictionary and then an Embedded Coder dictionary where I can load my package.

dataDictionary = Simulink.data.dictionary.create('DataDictionary.sldd');

coderDictionary = coder.dictionary.create(dataDictionary);

coderDictionary.loadPackage('CustomDataClass');

Afterwards I found all my custom storage classes and loaded one of them CustomParameter

storageClasses = getSection(coderDictionary,'StorageClasses');

entry = getEntry(storageClasses, 'CustomParameter');

I wanted to get a specific property like the HeaderFile but

entry.get('HeaderFile')

returns 'HeaderFile' is not a valid property. and

entry.getAvailableProperties

only returns {'Name'} {'Description'} {'DataSource'} even if I open Custom Storage Class Designer I can see more available properties with values.

Is it even possible what I'm trying to achieve? Am I missing something?

Answer 1

[Abhas]

Hi Andrei,

The get method and getAvailableProperties method limitations you're experiencing is beacuse all properties of a custom storage class are directly not accessible through the high-level API provided by coder.Dictionary objects. The getAvailableProperties method returns only {'Name'}, {'Description'}, and {'DataSource'}.

You can refer to the following documentation link to know more about the accessible properties: https://www.mathworks.com/help/ecoder/ref/coder.dictionary.entry-class.html

A viable workaround for accessing specific custom storage class properties that are not directly exposed through the coder dictionary API is:

Q = Simulink.Parameter;   
Q.Value = int32(5);                     
Q.CoderInfo.StorageClass = 'Custom';
Q.CoderInfo.CustomStorageClass = 'Define';
Q.CoderInfo.CustomAttributes.HeaderFile=" " % You can specify the HeaderFile here 

This method involves creating a Simulink.Parameter object (or similar), setting its storage class to your custom storage class, and then accessing the CustomAttributes field. This is more of a manual approach but can be effective for accessing or modifying properties not directly accessible through the coder dictionary entries.