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Comments (4)

vivkin avatar vivkin commented on July 21, 2024

All JsonValue's valid until JsonAllocator alive. In this situation allocating buffer from allocator and copy string to them can solve the problem

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qicosmos avatar qicosmos commented on July 21, 2024

hi, thanks for your reply, could you give some sample about the solution?

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vivkin avatar vivkin commented on July 21, 2024
std::string source = "{\"foo\" : \"bar\"}";

JsonAllocator allocator;
memcpy(allocator.allocate(source.size() + 1), source.c_str(), source.size() + 1);

char *endptr;
JsonValue value;
int status = jsonParse(source, &endptr, &value, allocator);
// ... and use value as usual

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qicosmos avatar qicosmos commented on July 21, 2024

thanks for your reply, however the solution is a little complicated, indeed i want to make a dynamic type by nan-boxing, actually lua, js, use nan-boxing to create dynamic type, so i think c++ also can do this. just like this:
dynamic a = 1;
dynamic b = 2.5;
dynamic c = "hello world"; //more natural and easy to use
it is a problem for string, cause the address maybe invalid, maybe need reference count to solve the problem.

from gason.

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