| // Copyright 2020 The Bazel Authors. All rights reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| package com.google.devtools.build.lib.query2.common; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| |
| import com.google.common.collect.ImmutableList; |
| import com.google.devtools.build.lib.query2.engine.QueryExpression; |
| import com.google.devtools.build.lib.skyframe.PrepareDepsOfPatternsValue; |
| import com.google.devtools.build.lib.vfs.PathFragment; |
| import java.util.LinkedHashSet; |
| import java.util.Optional; |
| import javax.annotation.Nullable; |
| |
| /** Representation of the --universe_scope option value. */ |
| public interface UniverseScope { |
| /** To be used when --infer_universe_scope applies. */ |
| UniverseScope INFER_FROM_QUERY_EXPRESSION = new InferredUniverseScope(); |
| /** To be used when neither --universe_scope nor --infer_universe_scope are set. */ |
| UniverseScope EMPTY = new ConstantUniverseScope(ImmutableList.of()); |
| |
| /** To be used when --universe_scope is set. */ |
| static UniverseScope fromUniverseScopeList(ImmutableList<String> constantUniverseScope) { |
| return new ConstantUniverseScope(constantUniverseScope); |
| } |
| |
| UniverseSkyKey getUniverseKey(@Nullable QueryExpression expr, PathFragment offset); |
| |
| boolean isEmpty(); |
| |
| Optional<ImmutableList<String>> getConstantValueMaybe(); |
| |
| /** Constant universe scope. */ |
| final class ConstantUniverseScope implements UniverseScope { |
| private final ImmutableList<String> constantUniverseScope; |
| |
| private ConstantUniverseScope(ImmutableList<String> constantUniverseScope) { |
| this.constantUniverseScope = constantUniverseScope; |
| } |
| |
| @Override |
| public boolean isEmpty() { |
| return constantUniverseScope.isEmpty(); |
| } |
| |
| @Override |
| public Optional<ImmutableList<String>> getConstantValueMaybe() { |
| return Optional.of(constantUniverseScope); |
| } |
| |
| @Override |
| public UniverseSkyKey getUniverseKey(@Nullable QueryExpression expr, PathFragment offset) { |
| return PrepareDepsOfPatternsValue.key(constantUniverseScope, offset); |
| } |
| } |
| |
| /** Universe scope inferred from query expression. */ |
| final class InferredUniverseScope implements UniverseScope { |
| private InferredUniverseScope() {} |
| |
| @Override |
| public boolean isEmpty() { |
| return false; |
| } |
| |
| @Override |
| public Optional<ImmutableList<String>> getConstantValueMaybe() { |
| return Optional.empty(); |
| } |
| |
| @Override |
| public UniverseSkyKey getUniverseKey(@Nullable QueryExpression expr, PathFragment offset) { |
| LinkedHashSet<String> targetPatterns = new LinkedHashSet<>(); |
| checkNotNull(expr).collectTargetPatterns(targetPatterns); |
| return PrepareDepsOfPatternsValue.key(ImmutableList.copyOf(targetPatterns), offset); |
| } |
| } |
| |
| } |