A fast JSON parser/generator for C++ with both SAX/DOM style API
Rapidjson is an attempt to create the fastest JSON parser and generator.
- Small but complete. Supports both SAX and DOM style API. SAX parser only a few hundred lines of code.
- Fast. In the order of magnitude of strlen(). Optionally supports SSE2/SSE4.2 for acceleration.
- Self-contained. Minimal dependency on standard libraries. No BOOST, not even STL.
- Compact. Each JSON value is 16 or 20 bytes for 32 or 64-bit machines respectively (excluding text string storage). With the custom memory allocator, parser allocates memory compactly during parsing.
- Full RFC4627 compliance. Supports UTF-8, UTF-16 and UTF-32.
- Support both in-situ parsing (directly decode strings into the source JSON text) and non-destructive parsing (decode strings into new buffers).
- Parse number to int/unsigned/int64_t/uint64_t/double depending on input
- Support custom memory allocation. Also, the default memory pool allocator can also be supplied with a user buffer (such as a buffer allocated on user's heap or programme stack) to minimize allocation.
As the name implies, rapidjson is inspired by rapidxml.
