How to serialize integer into string and then deserialize back from string to integer

[allan-almeida1]

What I have is

enum class Type {
A,
B,
C
};

And I want to serialize it to json but instead of using int (which is default for enum class), I want it to save to a string, so json = Type::B will produce "B" in the json.

Was able to do it successfully by implementing

void to_json(json &j, const Type &t) {
switch (t) {
case Type::A:
j = "A";
case Type::B:
.... etc

But when I try to deserialize it back from string to Type, I get an exception saying that "type must be integer, but is string".

Deserialization method follows same principle, so:

void from_json(const json &j, Type &t) {
if (json == "A") {
t = Type::A;
) else if (json == "B") {
..... etc

I was hoping it would solve the problem of converting between int and string but it doesnt. Any help would be appreciated.

[jcracine-cimeq]

There's a macro you can use to serialize enums. Check here for the documentation.

[allan-almeida1]

Works like a charm. Thank you!

[jcracine-cimeq]

Pleasure is mine! :)