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Change link() to shallowCopy() (issue #1343)

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Instead of storing a pointer, the function copies the `VariantData`.

Benefits:
* smaller code
* no impact on programs that don't use this feature

Drawbacks:
* changes to the original variant are not always reflected on the copy
* modifying the original from the shallow copy leads to UB
This commit is contained in:
Benoit Blanchon
2022-07-05 17:07:43 +02:00
parent 3b3ab8c4e1
commit cd8373ad32
36 changed files with 78 additions and 543 deletions
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8
extras/tests/JsonVariant/memoryUsage.cpp
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@@ -38,12 +38,4 @@ TEST_CASE("JsonVariant::memoryUsage()") {
REQUIRE(var.memoryUsage() == 6);
REQUIRE(var.memoryUsage() == doc.memoryUsage());
}
SECTION("ignore size of linked document") {
StaticJsonDocument<128> doc2;
doc2["hello"] = "world";
var.link(doc2);
CHECK(var.memoryUsage() == 0);
CHECK(var.memoryUsage() == doc.memoryUsage());
}
}