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// Copyright 2018 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.Preconditions;
import com.google.devtools.build.lib.actions.ActionExecutionContext;
import com.google.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.actions.ExecException;
import com.google.devtools.build.lib.rules.cpp.IncludeScanner.IncludeScannerSupplier;
import com.google.devtools.build.lib.rules.cpp.IncludeScanner.IncludeScanningPreparer;
import com.google.devtools.build.lib.skyframe.serialization.autocodec.AutoCodec;
import javax.annotation.Nullable;
/** Runs include scanning on actions, if include scanning is enabled. */
public class IncludeScanning implements IncludeProcessing {
@AutoCodec public static final IncludeScanning INSTANCE = new IncludeScanning();
@Override
public @Nullable Iterable<Artifact> determineAdditionalInputs(
@Nullable IncludeScannerSupplier includeScannerSupplier,
CppCompileAction action,
ActionExecutionContext actionExecutionContext)
throws ExecException, InterruptedException {
// Return null when no include scanning occurs, as opposed to an empty set, to distinguish from
// the case where includes are scanned but none are found.
if (!action.shouldScanIncludes()) {
return null;
}
return IncludeScanningPreparer.scanForIncludedInputs(
action,
Preconditions.checkNotNull(includeScannerSupplier, action),
action.getIncludeScanningHeaderData(),
action,
actionExecutionContext,
actionExecutionContext.getInputPath(action.getSourceFile()).getPathString());
}
}
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