Replace the QString* errorMessage out-parameter with std::expected<RigFormationNames, QString> in RifFormationNamesReader, and propagate the pattern to RimFormationNames::readFormationNamesFile() which now returns std::expected<void, QString>.
Fatal errors (file cannot be opened, FMU line-parse failure) return std::unexpected. Malformed .lyr lines are still skipped so the rest of the file loads, with warnings logged via RiaLogging instead of collected in the out-parameter. RimFormationNamesCollection::readAllFormationNames() now logs errors it previously discarded.
- Rename RifColorLegendData to RifFormationNamesReader to better reflect the
class purpose of reading formation names from .lyr files.
- Remove inheritance of cvf::Object
- Improve const correctness
Kristian Bendiksen
Magne Sjaastad