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// 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.packages;
import com.google.common.base.Preconditions;
import com.google.devtools.build.lib.cmdline.Label;
import com.google.devtools.build.lib.packages.License.DistributionType;
import com.google.devtools.build.lib.util.FileType;
import java.util.Set;
/**
* Common superclass for InputFile and OutputFile which provides implementation for the file
* operations in common.
*/
public abstract class FileTarget implements Target, FileType.HasFileType {
protected final Package pkg;
protected final Label label;
/**
* Constructs a file with the given label, which must be in the given package.
*/
protected FileTarget(Package pkg, Label label) {
Preconditions.checkArgument(label.getPackageFragment().equals(pkg.getNameFragment()));
this.pkg = pkg;
this.label = label;
}
public String getFilename() {
return label.getName();
}
@Override
public Label getLabel() {
return label;
}
@Override
public String getName() {
return label.getName();
}
@Override
public Package getPackage() {
return pkg;
}
@Override
public String filePathForFileTypeMatcher() {
return getFilename();
}
@Override
public String toString() {
return getTargetKind() + "(" + getLabel() + ")"; // Just for debugging
}
@Override
public Set<DistributionType> getDistributions() {
return getPackage().getDefaultDistribs();
}
/**
* {@inheritDoc}
*
* <p>File licenses are strange, and require some special handling. When
* you ask "What license covers this file?" in a query, the answer should
* be the license declared for the enclosing package. On the other hand,
* if the file is a source for a rule target, and the rule's license declares
* more exceptions than the default inherited by the file, the rule's
* more liberal target should override the stricter license of the file. In
* other words, the license of the rule always overrides the license of
* the non-rule file targets that are inputs to that rule.
*/
@Override
public License getLicense() {
return getPackage().getDefaultLicense();
}
}
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