fkYAML version 0.4.0

Summary

This release adds new features: parsing multi-line plain scalars & reverse iterations over sequence/mapping node elements.
See the related pull requests and documentations for more details.

A number of bugs (mostly in the deserialization feature) have also been resolved.
Note that a breaking change has been made in the way of error handling when deserializing an int or float scalar fail. The library now emits no error on such a scalar and treats it as a string scalar instead.

What's Changed

💥 Breaking Changes

• Stop throwing parse_error on string-to-int/float conversion failures if not forced with tag (#431, @fktn-k)
  • reported by @tomwpid in the issue #428
  • The library used to throw a fkyaml::parse_error upon conversion failures from a scalar to an integer or floating point value while parsing a YAML like this:

    id: 6E-578 # "6E-578" is interpreted as a floating point value but not expressible as a `double`
               # --> `fkyaml::parse_error` gets thrown due to the conversion failure.

  • Such a conversion failure is now internally recovered by treating the scalar as a string scalar instead.

✨ New Features

• Support parsing multiline plain scalars (#432, @fktn-k)
  • Parsing a YAML which contains multi-line plain (unquoted) scalars are now supported.

    foo: this is 
      a multi-line
        plain scalar # interpreted as "this is a multi-line plain scalar"

• Support reverse iterations over sequence/mapping nodes (#440, @fktn-k)
  • You can now iterate over sequence/mapping elements in a reversed order like this:

    // node is [1, 2, 3]
    for (auto rit = node.rbegin(); rit != node.rend(); ++rit) {
        std::cout << *rit << std::endl;
    }
    
    // output:
    // 3
    // 2
    // 1

⚡ Improvements

• Resolve the C4800 warning when compiled with MSVC (#430, @fktn-k)
  • reported by tomwpid in the issue #429
• Make node iterators compatible with different value type const-ness (#438, @fktn-k)
  • fkyaml::node::iterator and fkyaml::node::const_iterator are compatible in constructions, assignments and comparisons.

🐛 Bug Fixes

• Emit error if an anchor is specified to an alias (#434, @fktn-k)
• Fixed bugs in parsing block scalars (#435, @fktn-k)
• Fix parsing input which begins with a newline & indentation (#437, @fktn-k)
• Fix round-trip issue in float serialization using scientific notation (#439, @fktn-k)
  • reported by @dyerbod in the issue #405

🤖 CI

• Update GitHub Actions workflow jobs using macOS related runner images (#433, @fktn-k)
• Add more GCC & Clang versions to use in GitHub Actions workflows (#436, @fktn-k)

Full Changelog

v0.3.14...v0.4.0