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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.devtools.build.lib.cmdline.Label;
import com.google.devtools.build.lib.concurrent.ThreadSafety.Immutable;
import com.google.devtools.build.lib.concurrent.ThreadSafety.ThreadSafe;
import com.google.devtools.build.lib.events.Location;
import com.google.devtools.build.lib.util.Preconditions;
import com.google.devtools.build.lib.vfs.Path;
import com.google.devtools.build.lib.vfs.PathFragment;
/**
* A file that is an input to the build system.
*
* <p>In the build system, a file is considered an <i>input</i> file iff it is
* not generated by the build system (e.g. it's maintained under version
* control, or created by the test harness). It has nothing to do with the
* type of the file; a generated file containing <code>Java</code> source code
* is an OutputFile, not an InputFile.
*/
@Immutable @ThreadSafe
public final class InputFile extends FileTarget {
private final Location location;
private final RuleVisibility visibility;
private final License license;
/**
* Constructs an input file with the given label, which must be a label for
* the given package, and package-default visibility.
*/
InputFile(Package pkg, Label label, Location location) {
this(pkg, label, location, null, License.NO_LICENSE);
}
/**
* Constructs an input file with the given label, which must be a label for the given package
* that was parsed from the specified location, and has the specified visibility.
*/
InputFile(Package pkg, Label label, Location location, RuleVisibility visibility,
License license) {
super(pkg, label);
Preconditions.checkNotNull(location);
this.location = location;
this.visibility = visibility;
this.license = license;
}
public boolean isVisibilitySpecified() {
return visibility != null;
}
@Override
public RuleVisibility getVisibility() {
if (visibility != null) {
return visibility;
} else {
return pkg.getDefaultVisibility();
}
}
@Override
public boolean isConfigurable() {
return false;
}
public boolean isLicenseSpecified() {
return license != null && license != License.NO_LICENSE;
}
@Override
public License getLicense() {
if (license != null) {
return license;
} else {
return pkg.getDefaultLicense();
}
}
/**
* Returns the path to the location of the input file (which is necessarily
* within the source tree, not beneath <code>bin</code> or
* <code>genfiles</code>.
*
* <p>Prefer {@link #getExecPath} if possible.
*/
public Path getPath() {
return pkg.getPackageDirectory().getRelative(label.getName());
}
/**
* Returns the exec path of the file, i.e. the path relative to the package source root.
*/
public PathFragment getExecPath() {
return label.getPackageIdentifier().getSourceRoot().getRelative(label.getName());
}
@Override
public String getTargetKind() {
return targetKind();
}
@Override
public Rule getAssociatedRule() {
return null;
}
@Override
public Location getLocation() {
return location;
}
/** Returns the target kind for all input files. */
public static String targetKind() {
return "source file";
}
}
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