mirror of https://github.com/sbt/sbt.git
d77930394f
Incremental compiler didn't have any explicit logic to handle cancelled compilation so it would go into inconsistent state. Specifically, what would happen is that it would treat cancelled compilation as a compilation that finished normally and try to produce a new Analysis object out of partial information collected in AnalysisCallback. The most obvious outcome would be that the new Analysis would contain latest hashes for source files. The next time incremental compiler was asked to recompile the same files that it didn't recompile due to cancelled compilation it would think they were already successfully compiled and would do nothing. We fix that problem by following the same logic that handles compilation errors, cleans up partial results (produced class files) and makes sure that no Analysis is created out of broken state. We do that by introducing a new exception `CompileCancelled` and throwing it at the same spot as an exception signalizing compilation errors is being thrown. We also modify `IncrementalCompile` to catch that exception and gracefully return as there was no compilation invoked. NOTE: In case there were compilation errors reported _before_ compilation cancellations was requested we'll still report them using an old mechanism so partial errors are not lost in case of cancelled compilation. |
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