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// Copyright 2014 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.rules.java;
import com.google.common.collect.ImmutableList;
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.InvalidConfigurationException;
import com.google.devtools.build.lib.rules.java.JavaConfiguration.JavaClasspathMode;
import com.google.devtools.build.lib.syntax.Label;
/**
* A loader that creates JavaConfiguration instances based on JavaBuilder configurations and
* command-line options.
*/
public class JavaConfigurationLoader implements ConfigurationFragmentFactory {
private final JavaCpuSupplier cpuSupplier;
public JavaConfigurationLoader(JavaCpuSupplier cpuSupplier) {
this.cpuSupplier = cpuSupplier;
}
@Override
public JavaConfiguration create(ConfigurationEnvironment env, BuildOptions buildOptions)
throws InvalidConfigurationException {
JavaOptions javaOptions = buildOptions.get(JavaOptions.class);
Label javaToolchain = RedirectChaser.followRedirects(env, javaOptions.javaToolchain,
"java_toolchain");
return create(javaOptions, javaToolchain, cpuSupplier.getJavaCpu(buildOptions, env));
}
@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.<String>builder()
.addAll(getJavacJvmOptions())
.addAll(JavaHelper.tokenizeJavaOptions(javaOptions.javaBuilderJvmOpts))
.build();
return new JavaConfiguration(generateJavaDeps, javaOptions.jvmOpts, javaOptions,
javaToolchain, javaCpu, defaultJavaBuilderJvmOpts);
}
/**
* This method returns the list of JVM options when invoking the java compiler.
*
* <p>TODO(bazel-team): Maybe we should put those options in the java_toolchain rule.
*/
protected ImmutableList<String> getJavacJvmOptions() {
return ImmutableList.of("-client");
}
}
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