| // Copyright 2014 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.rules.cpp; |
| |
| import com.google.common.base.Function; |
| import com.google.common.collect.ImmutableMap; |
| import com.google.devtools.build.lib.analysis.TransitiveInfoCollection; |
| import com.google.devtools.build.lib.concurrent.ThreadSafety.Immutable; |
| import com.google.devtools.build.lib.packages.NativeInfo; |
| import com.google.devtools.build.lib.packages.NativeProvider; |
| import com.google.devtools.build.lib.rules.cpp.CcLinkParamsStore.CcLinkParamsStoreImpl; |
| |
| /** A target that provides C linker parameters. */ |
| @Immutable |
| public final class CcLinkParamsInfo extends NativeInfo { |
| public static final NativeProvider<CcLinkParamsInfo> PROVIDER = |
| new NativeProvider<CcLinkParamsInfo>(CcLinkParamsInfo.class, "link_params") {}; |
| public static final Function<TransitiveInfoCollection, CcLinkParamsStore> TO_LINK_PARAMS = |
| input -> { |
| // ... then try Skylark. |
| CcLinkParamsInfo provider = input.get(PROVIDER); |
| if (provider != null) { |
| return provider.getCcLinkParamsStore(); |
| } |
| return null; |
| }; |
| |
| private final CcLinkParamsStoreImpl store; |
| |
| public CcLinkParamsInfo(CcLinkParamsStore store) { |
| super(PROVIDER, ImmutableMap.<String, Object>of()); |
| this.store = new CcLinkParamsStoreImpl(store); |
| } |
| |
| public static CcLinkParamsInfo merge(final Iterable<CcLinkParamsInfo> providers) { |
| CcLinkParamsStore ccLinkParamsStore = |
| new CcLinkParamsStore() { |
| @Override |
| protected void collect( |
| CcLinkParams.Builder builder, boolean linkingStatically, boolean linkShared) { |
| for (CcLinkParamsInfo provider : providers) { |
| builder.add(provider.getCcLinkParamsStore()); |
| } |
| } |
| }; |
| return new CcLinkParamsInfo(ccLinkParamsStore); |
| } |
| |
| /** Returns the link params store. */ |
| public CcLinkParamsStore getCcLinkParamsStore() { |
| return store; |
| } |
| |
| /** |
| * Returns link parameters given static / shared linking settings. |
| */ |
| public CcLinkParams getCcLinkParams(boolean linkingStatically, boolean linkShared) { |
| return store.get(linkingStatically, linkShared); |
| } |
| } |