Question 1

How does sajson compare to RapidJSON in performance?

Accepted Answer

sajson often benchmarks faster than RapidJSON due to its in-place parsing and contiguous AST structure, making it a top choice for speed-critical C++ applications, though trade-offs include input modification.

Question 2

How to parse JSON from a memory-mapped file with sajson?

Accepted Answer

Map the file into memory and pass the buffer to sajson's parse function; it doesn't require null termination, so it works directly, but note that the input will be modified during parsing.

Question 3

Does sajson support keeping the original JSON string intact?

Accepted Answer

No, sajson modifies the input string in-place to convert values to UTF-8, so if preservation is needed, you must copy the data before parsing, which adds overhead.

Question 4

What are the allocation modes in sajson and when should I use each?

Accepted Answer

Single mode is fastest but allocates worst-case memory; dynamic mode is slower but grows as needed; bounded mode uses a fixed buffer for no allocations. Choose based on your memory and performance requirements.

Question 5

Can sajson handle UTF-16 encoded JSON files?

Accepted Answer

No, sajson only supports UTF-8 natively; you must transcode UTF-16 data to UTF-8 first, which can be an extra step in your pipeline.

Question 6

Is sajson suitable for embedded systems with tight memory?

Accepted Answer

Yes, its bounded allocation mode allows parsing without dynamic allocations, and small code size makes it a good fit, but the lack of 64-bit integer support might be a limitation.

sajson

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