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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.Artifact;
import com.google.devtools.build.lib.analysis.RuleContext;
import com.google.devtools.build.lib.analysis.configuredtargets.RuleConfiguredTarget.Mode;
import com.google.devtools.build.lib.concurrent.ThreadSafety.Immutable;
import com.google.devtools.build.lib.vfs.PathFragment;
import java.util.Objects;
/**
* Value object reused by fdo configurations that may be either an artifact or a path.
*/
@Immutable
public final class FdoInputFile {
private final Artifact artifact;
private final PathFragment absolutePath;
private FdoInputFile(Artifact artifact, PathFragment absolutePath) {
Preconditions.checkArgument((artifact == null) != (absolutePath == null));
Preconditions.checkArgument(absolutePath == null || absolutePath.isAbsolute());
this.artifact = artifact;
this.absolutePath = absolutePath;
}
public Artifact getArtifact() {
return artifact;
}
public PathFragment getAbsolutePath() {
return absolutePath;
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (!(o instanceof FdoInputFile)) {
return false;
}
FdoInputFile that = (FdoInputFile) o;
return Objects.equals(this.artifact, that.artifact)
&& Objects.equals(this.absolutePath, that.absolutePath);
}
@Override
public int hashCode() {
return Objects.hash(artifact, absolutePath);
}
public static FdoInputFile create(RuleContext ruleContext) {
boolean isLabel = ruleContext.attributes().isAttributeValueExplicitlySpecified("profile");
boolean isAbsolutePath =
ruleContext.attributes().isAttributeValueExplicitlySpecified("absolute_path_profile");
if (isLabel == isAbsolutePath) {
ruleContext.ruleError("exactly one of profile and absolute_path_profile should be specified");
return null;
}
if (isLabel) {
Artifact artifact = ruleContext.getPrerequisiteArtifact("profile", Mode.TARGET);
if (!artifact.isSourceArtifact()) {
ruleContext.attributeError("profile", " the target is not an input file");
}
return new FdoInputFile(artifact, null);
} else {
if (!ruleContext.getFragment(CppConfiguration.class).isFdoAbsolutePathEnabled()) {
ruleContext.attributeError(
"absolute_path_profile",
"this attribute cannot be used when --enable_fdo_profile_absolute_path is false");
return null;
}
String pathString = ruleContext.getExpander().expand("absolute_path_profile");
PathFragment absolutePath = PathFragment.create(pathString);
if (!absolutePath.isAbsolute()) {
ruleContext.attributeError(
"absolute_path_profile",
String.format("%s is not an absolute path", absolutePath.getPathString()));
return null;
}
return new FdoInputFile(null, absolutePath);
}
}
}
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