Fedor Isakov a240246daa Ensure failures don't stop program evaluation, recover failure always at top level (when processing "main/0" constraint). ... Keep track of principal origins to be used as points of failure. Minor code cleanup/refactoring.		2019-02-06 12:57:47 +01:00
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jetbrains.mps.lang.coderules.eval.mps	Ensure failures don't stop program evaluation, recover failure always at top level (when processing "main/0" constraint).	2019-02-06 12:57:47 +01:00