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Allow overriding how scripted objects are converted to strings

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solves #26796

- ADD `String to_string()` method to Object which can be overriden by `String _to_string()` in scripts
- ADD `String to_string(r_valid)` method to ScriptInstance to allow langauges to control how scripted objects are converted to strings
- IMPLEMENT to_string for GDScriptInstance, VisualScriptInstance, and NativeScriptInstance
- ADD Documentation about `Object.to_string` and `Object._to_string`
- Changed `Variant::operator String` to use `obj->to_string()`
This commit is contained in:
Leonard Meagher
2019-04-09 22:07:40 -07:00
parent 5772f60f96
commit f7eb426e2e
14 changed files with 107 additions and 1 deletions
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5
core/script_language.h
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@@ -173,6 +173,11 @@ public:
virtual void call_multilevel(const StringName &p_method, const Variant **p_args, int p_argcount);
virtual void call_multilevel_reversed(const StringName &p_method, const Variant **p_args, int p_argcount);
virtual void notification(int p_notification) = 0;
virtual String to_string(bool *r_valid) {
if (r_valid)
*r_valid = false;
return String();
}
//this is used by script languages that keep a reference counter of their own
//you can make make Ref<> not die when it reaches zero, so deleting the reference