套件： rapidjson-dev (1.1.0+dfsg2-5ubuntu1)

fast JSON parser/generator for C++ with 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 RFC7159 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.