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/*
* SPDX-FileCopyrightText: 2023-2024 The Refinery Authors <https://refinery.tools/>
*
* SPDX-License-Identifier: EPL-2.0
*/
package tools.refinery.store.reasoning.seed;
import tools.refinery.logic.AbstractValue;
import tools.refinery.store.map.Cursor;
import tools.refinery.store.reasoning.representation.AnyPartialSymbol;
import tools.refinery.store.reasoning.representation.PartialSymbol;
import tools.refinery.store.tuple.Tuple;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Set;
import java.util.function.Consumer;
public class ModelSeed {
private final int nodeCount;
private final Map<AnyPartialSymbol, Seed<?>> seeds;
private ModelSeed(int nodeCount, Map<AnyPartialSymbol, Seed<?>> seeds) {
this.nodeCount = nodeCount;
this.seeds = seeds;
}
public int getNodeCount() {
return nodeCount;
}
public <A extends AbstractValue<A, ?>> Seed<A> getSeed(PartialSymbol<A, ?> partialSymbol) {
var seed = seeds.get(partialSymbol);
if (seed == null) {
throw new IllegalArgumentException("No seed for partial symbol " + partialSymbol);
}
// The builder makes sure only well-typed seeds can be added.
@SuppressWarnings("unchecked")
var typedSeed = (Seed<A>) seed;
return typedSeed;
}
public boolean containsSeed(AnyPartialSymbol symbol) {
return seeds.containsKey(symbol);
}
public Set<AnyPartialSymbol> getSeededSymbols() {
return Collections.unmodifiableSet(seeds.keySet());
}
public <A extends AbstractValue<A, ?>> Cursor<Tuple, A> getCursor(PartialSymbol<A, ?> partialSymbol,
A defaultValue) {
return getSeed(partialSymbol).getCursor(defaultValue, nodeCount);
}
public static Builder builder(int nodeCount) {
return new Builder(nodeCount);
}
public static class Builder {
private final int nodeCount;
private final Map<AnyPartialSymbol, Seed<?>> seeds = new LinkedHashMap<>();
private Builder(int nodeCount) {
if (nodeCount < 0) {
throw new IllegalArgumentException("Node count must not be negative");
}
this.nodeCount = nodeCount;
}
public <A extends AbstractValue<A, ?>> Builder seed(PartialSymbol<A, ?> partialSymbol, Seed<A> seed) {
if (seed.arity() != partialSymbol.arity()) {
throw new IllegalStateException("Expected seed of arity %d for partial symbol %s, but got %d instead"
.formatted(partialSymbol.arity(), partialSymbol, seed.arity()));
}
if (!seed.valueType().equals(partialSymbol.abstractDomain().abstractType())) {
throw new IllegalStateException("Expected seed of type %s for partial symbol %s, but got %s instead"
.formatted(partialSymbol.abstractDomain().abstractType(), partialSymbol, seed.valueType()));
}
if (seeds.put(partialSymbol, seed) != null) {
throw new IllegalArgumentException("Duplicate seed for partial symbol " + partialSymbol);
}
return this;
}
public <A extends AbstractValue<A, ?>> Builder seed(PartialSymbol<A, ?> partialSymbol,
Consumer<Seed.Builder<A>> callback) {
var builder = Seed.builder(partialSymbol);
callback.accept(builder);
return seed(partialSymbol, builder.build());
}
public ModelSeed build() {
return new ModelSeed(nodeCount, Collections.unmodifiableMap(seeds));
}
}
}
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