JSON for Modern C++ Version 2.0.2

• Release date: 2016-07-31
• SHA-256: 8e97b7965b4594b00998d6704465412360e1a0ed927badb51ded8b82291a8f3d

Summary

This release combines a lot of small fixes and improvements. The release is backwards compatible.

Changes

• The parser has been overworked, and a lot of small issues have been fixed:
  • Improved parser performance by avoiding recursion and using move semantics for the return value.
  • Unescaped control charaters \x10-\x1f are not accepted any more.
  • Fixed a bug in the parser when reading from an input stream.
  • Improved test case coverage for UTF-8 parsing: now, all valid Unicode code points are tested both escaped and unescaped.
  • The precision of output streams is now preserved by the parser.
• Started to check the code correctness by proving termination of important loops. Furthermore, individual assertions have been replaced by a more systematic function which checks the class invariants. Note that assertions should be switched off in production by defining the preprocessor macro NDEBUG, see the documentation of assert.
• A lot of code cleanup: removed unused headers, fixed some compiler warnings, and fixed a build error for Windows-based Clang builds.
• Added some compile-time checks:
  • Unsupported compilers are rejected during compilation with an #error command.
  • Static assertion prohibits code with incompatible pointer types used in get_ptr().
• Improved the documentation, and adjusted the documentation script to choose the correct version of sed.
• Replaced a lot of "raw loops" by STL functions like std::all_of, std::for_each, or std::accumulate. This facilitates reasoning about termination of loops and sometimes allowed to simplify functions to a single return statement.
• Implemented a value() function for JSON pointers (similar to at function).
• The Homebrew formula (see Integration) is now tested for all Xcode builds (6.1 - 8.x) with Travis.
• Avoided output to std::cout in the test cases.