avoid output assignability if ItemIO.BOTH output

gselzer · ctrueden · commit 6616aabca3ea · 2019-09-22T17:26:38.000+02:00
diff --git a/src/main/java/org/scijava/ops/matcher/DefaultOpTypeMatchingService.java b/src/main/java/org/scijava/ops/matcher/DefaultOpTypeMatchingService.java
@@ -339,6 +339,7 @@ private boolean outputsMatch(final OpCandidate candidate, HashMap<TypeVariable<?
 		if (refOutType == null)
 			return true; // no constraints on output types
 
+		if(candidate.opInfo().output().isInput()) return true;
 		final Type candidateOutType = OpUtils.outputType(candidate);
 		final int conflictingIndex = MatchingUtils.checkGenericOutputsAssignability(new Type[] { candidateOutType },
 			new Type[] { refOutType }, typeBounds);
