Freeing up memory from a reused pointer

Projects Programming
1

I have a very text heavy project.

Currently I have the text stored as JSON files on an SD. The user reads through the spells (it's for D&D) one at a time on a screen. I only need to hold 1 spell, and then free up the memory from that object when it's time for the new one. I incorrectly thought that it would free up the memory for the object when it's "orphaned."

void parseSpellJson(int spellNum) {
  File spellJSON = SD.open(fileNames[spellNum]);
  const size_t capacity = JSON_OBJECT_SIZE(12) + 1240;
  DynamicJsonDocument root(capacity);
  deserializeJson(root,spellJSON);

  
   Spell* newSpell = new Spell(root["name"], root["casting_time"], root["components"], root["duration"], root["level"], root["range"], root["ritual"], root["school"], root["page1"], root["page2"], root["page3"], root["page4"]);
   tome.push(newSpell);
    
  
}
2

Is there a question?

3

gfvalvo:
Is there a question?

How do I free up the memory?

4

Hard to tell given the limited info you've provided. I don't see definitions/declarations of all the variables. I don't see any #include directives. I don't see github links to the source code of the libraries you've used.

5

Here is the full project: https://github.com/bridge2nowhere/SpellBook/tree/memory-management

6 
CircularBuffer<Spell*, 1> tome;

What's the point of a circular buffer that only holds one element? Just return a pointer to the object you dynamically created.

Regardless, did you try delete?