fix json = json_ref #12615
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fix json = json_ref #12615
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OhadMeir
reviewed
Jan 28, 2024
| // operator=() get called. But the implementation is a copy-and-swap one, meaning it attempts to construct a json value | ||
| // from the argument. Since the argument isn't a json object (doesn't matter that it has a conversion operator), it does | ||
| // this by attempting to deserialize it with to_json()! We need to avoid this, for this usage and others... | ||
| inline void to_json( rsutils::json & j, json_ref const & jr ) |
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This gets called automatically by the json constructor?
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Yes, they have a constructor to take any unknown type and convert it to json. It does this via to_json.
OhadMeir
approved these changes
Jan 28, 2024
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This didn't work... :(
The nesting returns a json_ref, correctly.
operator=()gets called. But the implementation is a copy-and-swap one, meaning it attempts to construct a json value from the argument. Since the argument isn't a json object (doesn't matter that it has a conversion operator), it does this by attempting to deserialize it with to_json()!Can also be fixed by:
But this requires handling at every usage.
So we provide a simple to_json() implementation...
Related to #12555.