1 files changed, 58 insertions, 0 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/rules/cpp/LipoContextProvider.java b/src/main/java/com/google/devtools/build/lib/rules/cpp/LipoContextProvider.java
new file mode 100644
index 0000000000..a9ffea8f6b
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+++ b/src/main/java/com/google/devtools/build/lib/rules/cpp/LipoContextProvider.java
@@ -0,0 +1,58 @@
+// Copyright 2014 Google Inc. 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.collect.ImmutableMap;
+import com.google.devtools.build.lib.actions.Artifact;
+import com.google.devtools.build.lib.analysis.TransitiveInfoProvider;
+import com.google.devtools.build.lib.concurrent.ThreadSafety.Immutable;
+
+import java.util.Map;
+
+/**
+ * Provides LIPO context information to the LIPO-enabled target configuration.
+ *
+ * <p>This is a rollup of the data collected in the LIPO context collector configuration.
+ * Each target in the LIPO context collector configuration has a {@link TransitiveLipoInfoProvider}
+ * which is used to transitively collect the data, then the {@code cc_binary} that is referred to
+ * in {@code --lipo_context} puts the collected data into {@link LipoContextProvider}, of which
+ * there is only one in any given build.
+ */
+@Immutable
+public final class LipoContextProvider implements TransitiveInfoProvider {
+
+  private final CppCompilationContext cppCompilationContext;
+
+  private final ImmutableMap<Artifact, IncludeScannable> includeScannables;
+  public LipoContextProvider(CppCompilationContext cppCompilationContext,
+      Map<Artifact, IncludeScannable> scannables) {
+    this.cppCompilationContext = cppCompilationContext;
+    this.includeScannables = ImmutableMap.copyOf(scannables);
+  }
+
+  /**
+   * Returns merged compilation context for the whole LIPO subtree.
+   */
+  public CppCompilationContext getLipoContext() {
+    return cppCompilationContext;
+  }
+
+  /**
+   * Returns the map from source artifact to the include scannable object representing
+   * the corresponding FDO source input file.
+   */
+  public ImmutableMap<Artifact, IncludeScannable> getIncludeScannables() {
+    return includeScannables;
+  }
+}