Implement YAML merge key behavior while reading the hardware layout tree

Laurent Petre requested to merge feature/yaml-merge-key into develop


Title says it all. This MR does not aim at implementing the full merge key support in yam-cpp, but only when reading a YAML tree.

Related Issue

How Has This Been Tested?

Code compiles, test suite passed.

Types of changes

  • Bug fix (non-breaking change which fixes an issue)
  • New feature (non-breaking change which adds functionality)
  • Breaking change (fix or feature that would cause existing functionality to change)


  • My code follows the code style of this project.
  • My change requires a change to the documentation.
  • I have updated the documentation accordingly.
  • I have read the CONTRIBUTING document.
  • I have added tests to cover my changes.
  • All new and existing tests passed.

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