ReducedOpInfo: cache modified hints

hinerm · hinerm · commit b331bbfc0418 · 2022-11-17T14:47:55.000-06:00
Hints are immutable so instead of creating a new set each time they're
requested, let's cache them once.
diff --git a/scijava/scijava-ops-engine/src/main/java/org/scijava/ops/engine/reduce/ReducedOpInfo.java b/scijava/scijava-ops-engine/src/main/java/org/scijava/ops/engine/reduce/ReducedOpInfo.java
@@ -27,13 +27,15 @@ public class ReducedOpInfo implements OpInfo {
 	private final Type reducedOpType;
 	private final int paramsReduced;
 
+	private final Hints hints;
 	private final Struct struct;
 	private ValidityException validityException;
 
 	public ReducedOpInfo(OpInfo src, Type reducedOpType, int paramsReduced) {
 		this.srcInfo = src;
 		this.reducedOpType = reducedOpType;
 		this.paramsReduced = paramsReduced;
+		this.hints = srcInfo.declaredHints().plus(BaseOpHints.Reduction.FORBIDDEN);
 		List<ValidityProblem> problems = new ArrayList<>();
 
 		RetypingRequest r = retypingRequest();
@@ -126,7 +128,7 @@ public Struct struct() {
 	}
 
 	@Override public Hints declaredHints() {
-		return srcInfo().declaredHints().plus(BaseOpHints.Reduction.FORBIDDEN);
+		return hints;
 	}
 
 	@Override
