aboutsummaryrefslogtreecommitdiffhomepage
path: root/src/main/java/com/google/devtools/build/lib/rules/java/JavaConfigurationLoader.java
blob: 53fdfdfb3b5692872dc1e36f0eebee3fb3a4b2e5 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
// 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");
  }

}