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/*
* SPDX-FileCopyrightText: 2023 The Refinery Authors <https://refinery.tools/>
*
* SPDX-License-Identifier: EPL-2.0
*/
package tools.refinery.language.web.semantics;
import tools.refinery.store.map.AnyVersionedMap;
import tools.refinery.store.map.Cursor;
import tools.refinery.store.reasoning.representation.PartialSymbol;
import tools.refinery.store.reasoning.seed.ModelSeed;
import tools.refinery.store.reasoning.seed.Seed;
import tools.refinery.store.tuple.Tuple;
import tools.refinery.viatra.runtime.CancellationToken;
import java.util.Set;
class CancellableSeed<T> implements Seed<T> {
private final CancellationToken cancellationToken;
private final Seed<T> seed;
private CancellableSeed(CancellationToken cancellationToken, Seed<T> seed) {
this.cancellationToken = cancellationToken;
this.seed = seed;
}
@Override
public int arity() {
return seed.arity();
}
@Override
public Class<T> valueType() {
return seed.valueType();
}
@Override
public T reducedValue() {
return seed.reducedValue();
}
@Override
public T get(Tuple key) {
return seed.get(key);
}
@Override
public Cursor<Tuple, T> getCursor(T defaultValue, int nodeCount) {
return new CancellableCursor<>(cancellationToken, seed.getCursor(defaultValue, nodeCount));
}
public static ModelSeed wrap(CancellationToken cancellationToken, ModelSeed modelSeed) {
var builder = ModelSeed.builder(modelSeed.getNodeCount());
for (var partialSymbol : modelSeed.getSeededSymbols()) {
wrap(cancellationToken, (PartialSymbol<?, ?>) partialSymbol, modelSeed, builder);
}
return builder.build();
}
private static <A, C> void wrap(CancellationToken cancellationToken, PartialSymbol<A, C> partialSymbol,
ModelSeed originalModelSeed, ModelSeed.Builder builder) {
var originalSeed = originalModelSeed.getSeed(partialSymbol);
builder.seed(partialSymbol, new CancellableSeed<>(cancellationToken, originalSeed));
}
private record CancellableCursor<T>(CancellationToken cancellationToken, Cursor<Tuple, T> cursor)
implements Cursor<Tuple, T> {
@Override
public Tuple getKey() {
return cursor.getKey();
}
@Override
public T getValue() {
return cursor.getValue();
}
@Override
public boolean isTerminated() {
return cursor.isTerminated();
}
@Override
public boolean move() {
cancellationToken.checkCancelled();
return cursor.move();
}
@Override
public boolean isDirty() {
return cursor.isDirty();
}
@Override
public Set<AnyVersionedMap> getDependingMaps() {
return cursor.getDependingMaps();
}
}
}
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