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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.rules.java;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import com.google.devtools.build.lib.analysis.RedirectChaser;
import com.google.devtools.build.lib.analysis.config.BuildConfiguration.Fragment;
import com.google.devtools.build.lib.analysis.config.BuildOptions;
import com.google.devtools.build.lib.analysis.config.ConfigurationEnvironment;
import com.google.devtools.build.lib.analysis.config.ConfigurationFragmentFactory;
import com.google.devtools.build.lib.analysis.config.FragmentOptions;
import com.google.devtools.build.lib.analysis.config.InvalidConfigurationException;
import com.google.devtools.build.lib.cmdline.Label;
import com.google.devtools.build.lib.rules.cpp.CppConfiguration;
import com.google.devtools.build.lib.rules.cpp.CppOptions;
import com.google.devtools.build.lib.rules.java.JavaConfiguration.JavaClasspathMode;
/**
* A loader that creates JavaConfiguration instances based on JavaBuilder configurations and
* command-line options.
*/
public class JavaConfigurationLoader implements ConfigurationFragmentFactory {
@Override
public ImmutableSet<Class<? extends FragmentOptions>> requiredOptions() {
// TODO(bazel-team): either require CppOptions only for dependency trees that use the JAVA_CPU
// make variable or break out CppConfiguration.getTargetCpu() into its own distinct fragment.
return ImmutableSet.of(JavaOptions.class, CppOptions.class);
}
@Override
public JavaConfiguration create(ConfigurationEnvironment env, BuildOptions buildOptions)
throws InvalidConfigurationException {
CppConfiguration cppConfiguration = env.getFragment(buildOptions, CppConfiguration.class);
if (cppConfiguration == null) {
return null;
}
JavaOptions javaOptions = buildOptions.get(JavaOptions.class);
Label javaToolchain = RedirectChaser.followRedirects(env, javaOptions.javaToolchain,
"java_toolchain");
return create(javaOptions, javaToolchain, cppConfiguration.getTargetCpu());
}
@Override
public Class<? extends Fragment> creates() {
return JavaConfiguration.class;
}
public JavaConfiguration create(JavaOptions javaOptions, Label javaToolchain, String javaCpu)
throws InvalidConfigurationException {
boolean generateJavaDeps = javaOptions.javaDeps ||
javaOptions.experimentalJavaClasspath != JavaClasspathMode.OFF;
ImmutableList<String> defaultJavaBuilderJvmOpts =
ImmutableList.copyOf(JavaHelper.tokenizeJavaOptions(javaOptions.javaBuilderJvmOpts));
return new JavaConfiguration(generateJavaDeps, javaOptions.jvmOpts, javaOptions,
javaToolchain, javaCpu, defaultJavaBuilderJvmOpts);
}
}
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