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// Copyright 2021 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.java;
import static com.google.common.collect.ImmutableList.toImmutableList;
import com.google.auto.value.AutoValue;
import com.google.common.collect.ImmutableList;
import com.google.devtools.build.lib.collect.nestedset.Depset;
import com.google.devtools.build.lib.collect.nestedset.NestedSet;
import com.google.devtools.build.lib.concurrent.ThreadSafety.Immutable;
import com.google.devtools.build.lib.packages.StructImpl;
import com.google.devtools.build.lib.rules.cpp.CcInfo;
import com.google.devtools.build.lib.rules.cpp.CcNativeLibraryInfo;
import com.google.devtools.build.lib.rules.cpp.LibraryToLink;
import com.google.devtools.build.lib.rules.java.JavaInfo.JavaInfoInternalProvider;
import java.util.Collection;
import javax.annotation.Nullable;
import net.starlark.java.eval.EvalException;
/** Provides information about C++ libraries to be linked into Java targets. */
@Immutable
@AutoValue
public abstract class JavaCcInfoProvider implements JavaInfoInternalProvider {
// TODO(b/183579145): Replace CcInfo with only linking information.
public abstract CcInfo getCcInfo();
public static JavaCcInfoProvider create(CcInfo ccInfo) {
return new AutoValue_JavaCcInfoProvider(
CcInfo.builder()
.setCcLinkingContext(ccInfo.getCcLinkingContext())
.setCcNativeLibraryInfo(ccInfo.getCcNativeLibraryInfo())
.build());
}
/** Merges several JavaCcInfoProvider providers into one. */
public static JavaCcInfoProvider merge(Collection<JavaCcInfoProvider> providers) {
ImmutableList<CcInfo> ccInfos =
providers.stream().map(JavaCcInfoProvider::getCcInfo).collect(toImmutableList());
return create(CcInfo.merge(ccInfos));
}
@Nullable
static JavaCcInfoProvider fromStarlarkJavaInfo(StructImpl javaInfo) throws EvalException {
CcInfo ccInfo = javaInfo.getValue("cc_link_params_info", CcInfo.class);
if (ccInfo == null) {
NestedSet<LibraryToLink> transitiveCcNativeLibraries =
Depset.cast(
javaInfo.getValue("transitive_native_libraries"),
LibraryToLink.class,
"transitive_native_libraries");
if (transitiveCcNativeLibraries.isEmpty()) {
return null;
}
ccInfo =
CcInfo.builder()
.setCcNativeLibraryInfo(new CcNativeLibraryInfo(transitiveCcNativeLibraries))
.build();
}
return create(ccInfo);
}
}