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// Copyright 2007-2015 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.packages.util;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.devtools.build.lib.cmdline.Label;
import com.google.devtools.build.lib.cmdline.PackageIdentifier;
import com.google.devtools.build.lib.events.Event;
import com.google.devtools.build.lib.events.EventHandler;
import com.google.devtools.build.lib.packages.CachingPackageLocator;
import com.google.devtools.build.lib.packages.ConstantRuleVisibility;
import com.google.devtools.build.lib.packages.GlobCache;
import com.google.devtools.build.lib.packages.MakeEnvironment;
import com.google.devtools.build.lib.packages.Package;
import com.google.devtools.build.lib.packages.Package.LegacyBuilder;
import com.google.devtools.build.lib.packages.PackageFactory;
import com.google.devtools.build.lib.packages.PackageFactory.LegacyGlobber;
import com.google.devtools.build.lib.packages.RuleClassProvider;
import com.google.devtools.build.lib.syntax.BuildFileAST;
import com.google.devtools.build.lib.syntax.Environment.Extension;
import com.google.devtools.build.lib.syntax.ParserInputSource;
import com.google.devtools.build.lib.testutil.TestRuleClassProvider;
import com.google.devtools.build.lib.testutil.TestUtils;
import com.google.devtools.build.lib.util.Pair;
import com.google.devtools.build.lib.vfs.Path;
import com.google.devtools.build.lib.vfs.PathFragment;
import java.io.IOException;
/**
* An apparatus that creates / maintains a {@link PackageFactory}.
*/
public class PackageFactoryApparatus {
private final EventHandler eventHandler;
private final PackageFactory factory;
public PackageFactoryApparatus(
EventHandler eventHandler, PackageFactory.EnvironmentExtension... environmentExtensions) {
this.eventHandler = eventHandler;
RuleClassProvider ruleClassProvider = TestRuleClassProvider.getRuleClassProvider();
factory = new PackageFactory(ruleClassProvider, null,
ImmutableList.copyOf(environmentExtensions));
}
/**
* Returns the package factory maintained by this apparatus.
*/
public PackageFactory factory() {
return factory;
}
private CachingPackageLocator getPackageLocator() {
// This is used only in globbing and will cause us to always traverse
// subdirectories.
return createEmptyLocator();
}
/**
* Parses and evaluates {@code buildFile} and returns the resulting {@link Package} instance.
*/
public Package createPackage(String packageName, Path buildFile)
throws Exception {
return createPackage(packageName, buildFile, eventHandler);
}
/**
* Parses and evaluates {@code buildFile} with custom {@code eventHandler} and returns the resulting
* {@link Package} instance.
*/
public Package createPackage(String packageName, Path buildFile, EventHandler reporter)
throws Exception {
try {
Package pkg =
factory.createPackageForTesting(
PackageIdentifier.createInDefaultRepo(packageName),
buildFile,
getPackageLocator(),
reporter);
return pkg;
} catch (InterruptedException e) {
throw new IllegalStateException(e);
}
}
/**
* Parses the {@code buildFile} into a {@link BuildFileAST}.
*/
public BuildFileAST ast(Path buildFile) throws IOException {
ParserInputSource inputSource = ParserInputSource.create(buildFile);
return BuildFileAST.parseBuildFile(inputSource, eventHandler, /*parsePython=*/ false);
}
/**
* Evaluates the {@code buildFileAST} into a {@link Package}.
*/
public Pair<Package, GlobCache> evalAndReturnGlobCache(String packageName, Path buildFile,
BuildFileAST buildFileAST) throws InterruptedException {
PackageIdentifier packageId = PackageIdentifier.createInDefaultRepo(packageName);
GlobCache globCache =
new GlobCache(
buildFile.getParentDirectory(),
packageId,
getPackageLocator(),
null,
TestUtils.getPool());
LegacyGlobber globber = new LegacyGlobber(globCache);
Package externalPkg =
Package.newExternalPackageBuilder(
buildFile.getParentDirectory().getRelative("WORKSPACE"), "TESTING")
.build();
LegacyBuilder resultBuilder =
factory.evaluateBuildFile(
externalPkg,
packageId,
buildFileAST,
buildFile,
globber,
ImmutableList.<Event>of(),
ConstantRuleVisibility.PUBLIC,
false,
new MakeEnvironment.Builder(),
ImmutableMap.<PathFragment, Extension>of(),
ImmutableList.<Label>of());
Package result = resultBuilder.build();
Event.replayEventsOn(eventHandler, result.getEvents());
return Pair.of(result, globCache);
}
public Package eval(String packageName, Path buildFile, BuildFileAST buildFileAST)
throws InterruptedException {
return evalAndReturnGlobCache(packageName, buildFile, buildFileAST).first;
}
/**
* Evaluates the {@code buildFileAST} into a {@link Package}.
*/
public Package eval(String packageName, Path buildFile)
throws InterruptedException, IOException {
return eval(packageName, buildFile, ast(buildFile));
}
/**
* Creates a package locator that finds no packages.
*/
public static CachingPackageLocator createEmptyLocator() {
return new CachingPackageLocator() {
@Override
public Path getBuildFileForPackage(PackageIdentifier packageName) {
return null;
}
};
}
}
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