| // Copyright 2017 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.analysis; |
| |
| import com.google.devtools.build.lib.collect.ImmutableSharedKeyMap; |
| import com.google.devtools.build.lib.packages.Info; |
| import com.google.devtools.build.lib.packages.Provider; |
| import java.util.Map; |
| import javax.annotation.Nullable; |
| |
| /** |
| * Implementation of {@link TransitiveInfoProvider} that uses {@link ImmutableSharedKeyMap}. For |
| * memory efficiency, inheritance is used instead of aggregation as an implementation detail. |
| */ |
| class TransitiveInfoProviderMapImpl |
| extends ImmutableSharedKeyMap<Object, Object> |
| implements TransitiveInfoProviderMap { |
| |
| TransitiveInfoProviderMapImpl(Map<Object, Object> map) { |
| super(map); |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Nullable |
| @Override |
| public <P extends TransitiveInfoProvider> P getProvider(Class<P> providerClass) { |
| Class<? extends TransitiveInfoProvider> effectiveClass = |
| TransitiveInfoProviderEffectiveClassHelper.get(providerClass); |
| return (P) get(effectiveClass); |
| } |
| |
| @Nullable |
| @Override |
| public Info getProvider(Provider.Key key) { |
| return (Info) get(key); |
| } |
| |
| @Nullable |
| @Override |
| public Object getProvider(String legacyKey) { |
| return get(legacyKey); |
| } |
| |
| @Override |
| public int getProviderCount() { |
| return size(); |
| } |
| |
| @Override |
| public Object getProviderKeyAt(int i) { |
| return keyAt(i); |
| } |
| |
| @Override |
| public Object getProviderInstanceAt(int i) { |
| return valueAt(i); |
| } |
| } |