Parse large floats as infinity (#1349) (#1353)

Return 1.9.1 functionality where values too large to fit in
double are converted to positive or negative infinity.

Commit 645cd04 changed functionality so that large floats cause
parse error, while version 1.9.1 accepted them as infinite.
This is problematic because writer outputs infinity values
as `1e+9999`, which could no longer be parsed back.

Fixed also legacy Reader even though it did not parse large values
even before breaking change, due to problematic output/parse asymmetry.

`>>` operator sets value to numeric_limits::max/lowest value if
representation is too large to fit to double. [1][2] In macos
value appears to be parsed to infinity.

> | value in *val*           | description |
> |--------------------------|-------------|
> | numeric_limits::max()    | The sequence represents a value too large for the type of val |
> | numeric_limits::lowest() | The sequence represents a value too large negative for the type of val |

[1] https://www.cplusplus.com/reference/istream/istream/operator%3E%3E/
[2] https://www.cplusplus.com/reference/locale/num_get/get/

Signed-off-by: Tero Kinnunen <tero.kinnunen@vaisala.com>

Co-authored-by: Tero Kinnunen <tero.kinnunen@vaisala.com>
3 files changed
tree: 280f3baea77726cdbd5cd93636e8523689f1cf77
  1. .github/
  2. .travis_scripts/
  3. cmake/
  4. devtools/
  5. doc/
  6. example/
  7. include/
  8. pkg-config/
  9. src/
  10. test/
  11. .clang-format
  12. .clang-tidy
  13. .gitattributes
  14. .gitignore
  15. .travis.yml
  16. amalgamate.py
  17. appveyor.yml
  18. AUTHORS
  19. BUILD.bazel
  20. CMakeLists.txt
  21. CONTRIBUTING.md
  22. CTestConfig.cmake
  23. dev.makefile
  24. doxybuild.py
  25. get_version.pl
  26. jsoncpp-namespaced-targets.cmake
  27. jsoncppConfig.cmake.in
  28. LICENSE
  29. meson.build
  30. meson_options.txt
  31. README.md
  32. reformat.sh
  33. version.in
README.md

JsonCpp

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JSON is a lightweight data-interchange format. It can represent numbers, strings, ordered sequences of values, and collections of name/value pairs.

JsonCpp is a C++ library that allows manipulating JSON values, including serialization and deserialization to and from strings. It can also preserve existing comment in unserialization/serialization steps, making it a convenient format to store user input files.

Documentation

JsonCpp documentation is generated using Doxygen.

A note on backward-compatibility

  • 1.y.z is built with C++11.
  • 0.y.z can be used with older compilers.
  • 00.11.z can be used both in old and new compilers.
  • Major versions maintain binary-compatibility.

Special note

The branch 00.11.zis a new branch, its major version number 00 is to show that it is different from 0.y.z and 1.y.z, the main purpose of this branch is to make a balance between the other two branches. Thus, users can use some new features in this new branch that introduced in 1.y.z, but can hardly applied into 0.y.z.

Using JsonCpp in your project

The vcpkg dependency manager

You can download and install JsonCpp using the vcpkg dependency manager:

git clone https://github.com/Microsoft/vcpkg.git
cd vcpkg
./bootstrap-vcpkg.sh
./vcpkg integrate install
./vcpkg install jsoncpp

The JsonCpp port in vcpkg is kept up to date by Microsoft team members and community contributors. If the version is out of date, please create an issue or pull request on the vcpkg repository.

Amalgamated source

https://github.com/open-source-parsers/jsoncpp/wiki/Amalgamated-(Possibly-outdated)

The Meson Build System

If you are using the Meson Build System, then you can get a wrap file by downloading it from Meson WrapDB, or simply use meson wrap install jsoncpp.

Other ways

If you have trouble, see the Wiki, or post a question as an Issue.

License

See the LICENSE file for details. In summary, JsonCpp is licensed under the MIT license, or public domain if desired and recognized in your jurisdiction.