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Optimize storage of tiny strings (up to 3 characters)

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This commit is contained in:
Benoit Blanchon
2025-04-09 08:55:08 +02:00
parent 7f75985e47
commit 91397f9f06
16 changed files with 229 additions and 57 deletions
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extras/tests/JsonDeserializer/object.cpp
+10 -9
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@@ -292,22 +292,23 @@ TEST_CASE("deserialize JSON object") {
}
SECTION("Repeated key") {
DeserializationError err = deserializeJson(doc, "{a:{b:{c:1}},a:2}");
DeserializationError err =
deserializeJson(doc, "{alfa:{bravo:{charlie:1}},alfa:2}");
REQUIRE(err == DeserializationError::Ok);
REQUIRE(doc.as<std::string>() == "{\"a\":2}");
REQUIRE(doc.as<std::string>() == "{\"alfa\":2}");
REQUIRE(spy.log() ==
AllocatorLog{
Allocate(sizeofStringBuffer()),
Allocate(sizeofPool()),
Reallocate(sizeofStringBuffer(), sizeofString("a")),
Reallocate(sizeofStringBuffer(), sizeofString("alfa")),
Allocate(sizeofStringBuffer()),
Reallocate(sizeofStringBuffer(), sizeofString("b")),
Reallocate(sizeofStringBuffer(), sizeofString("bravo")),
Allocate(sizeofStringBuffer()),
Reallocate(sizeofStringBuffer(), sizeofString("c")),
Reallocate(sizeofStringBuffer(), sizeofString("charlie")),
Allocate(sizeofStringBuffer()),
Deallocate(sizeofString("b")),
Deallocate(sizeofString("c")),
Deallocate(sizeofString("bravo")),
Deallocate(sizeofString("charlie")),
Deallocate(sizeofStringBuffer()),
Reallocate(sizeofPool(), sizeofObject(2) + sizeofObject(1)),
});
@@ -389,11 +390,11 @@ TEST_CASE("deserialize JSON object under memory constraints") {
SECTION("string allocation fails") {
timebomb.setCountdown(3);
char input[] = "{\"a\":\"b\"}";
char input[] = "{\"alfa\":\"bravo\"}";
DeserializationError err = deserializeJson(doc, input);
REQUIRE(err == DeserializationError::NoMemory);
REQUIRE(doc.as<std::string>() == "{\"a\":null}");
REQUIRE(doc.as<std::string>() == "{\"alfa\":null}");
}
}