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
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
|
// 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.analysis;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.ListMultimap;
import com.google.common.collect.Sets;
import com.google.devtools.build.lib.analysis.config.BuildConfiguration;
import com.google.devtools.build.lib.cmdline.Label;
import com.google.devtools.build.lib.collect.compacthashset.CompactHashSet;
import com.google.devtools.build.lib.packages.AttributeMap;
import com.google.devtools.build.lib.packages.Target;
import com.google.devtools.build.lib.skyframe.ConfiguredTargetKey;
import com.google.devtools.build.lib.vfs.PathFragment;
import java.util.List;
import java.util.Set;
/**
* Utility methods for use by ConfiguredTarget implementations.
*/
public abstract class Util {
private Util() {}
//---------- Label and Target related methods
/**
* Returns the workspace-relative path of the specified target (file or rule).
*
* <p>For example, "//foo/bar:wiz" and "//foo:bar/wiz" both result in "foo/bar/wiz".
*/
public static PathFragment getWorkspaceRelativePath(Target target) {
return getWorkspaceRelativePath(target.getLabel());
}
/**
* Returns the workspace-relative path of the specified target (file or rule).
*
* <p>For example, "//foo/bar:wiz" and "//foo:bar/wiz" both result in "foo/bar/wiz".
*/
public static PathFragment getWorkspaceRelativePath(Label label) {
return label.getPackageFragment().getRelative(label.getName());
}
/**
* Returns the workspace-relative path of the specified target (file or rule),
* prepending a prefix and appending a suffix.
*
* <p>For example, "//foo/bar:wiz" and "//foo:bar/wiz" both result in "foo/bar/wiz".
*/
public static PathFragment getWorkspaceRelativePath(Target target, String prefix, String suffix) {
return target.getLabel().getPackageFragment().getRelative(prefix + target.getName() + suffix);
}
/**
* Checks if a PathFragment contains a '-'.
*/
public static boolean containsHyphen(PathFragment path) {
return path.getPathString().indexOf('-') >= 0;
}
// ---------- Implicit dependency extractor
/*
* Given a RuleContext, find all the implicit deps aka deps that weren't explicitly set in the
* build file and all toolchain deps.
* note: nodes that are depended on both implicitly and explicitly are considered explicit.
*/
public static ImmutableSet<ConfiguredTargetKey> findImplicitDeps(RuleContext ruleContext) {
// (1) Consider rule attribute dependencies.
Set<ConfiguredTargetKey> maybeImplicitDeps = CompactHashSet.create();
Set<ConfiguredTargetKey> explicitDeps = CompactHashSet.create();
AttributeMap attributes = ruleContext.attributes();
ListMultimap<String, ? extends TransitiveInfoCollection> targetMap =
ruleContext.getConfiguredTargetMap();
for (String attrName : attributes.getAttributeNames()) {
List<? extends TransitiveInfoCollection> attrValues = targetMap.get(attrName);
if (attrValues != null && !attrValues.isEmpty()) {
if (attributes.isAttributeValueExplicitlySpecified(attrName)) {
addLabelsAndConfigs(explicitDeps, attrValues);
} else {
addLabelsAndConfigs(maybeImplicitDeps, attrValues);
}
}
}
// (2) Consider toolchain dependencies
ToolchainContext toolchainContext = ruleContext.getToolchainContext();
if (toolchainContext != null) {
BuildConfiguration config = ruleContext.getConfiguration();
for (Label toolchain : toolchainContext.getResolvedToolchainLabels()) {
maybeImplicitDeps.add(ConfiguredTargetKey.of(toolchain, config));
}
maybeImplicitDeps.add(
ConfiguredTargetKey.of(toolchainContext.getExecutionPlatform().label(), config));
maybeImplicitDeps.add(
ConfiguredTargetKey.of(toolchainContext.getTargetPlatform().label(), config));
}
return ImmutableSet.copyOf(Sets.difference(maybeImplicitDeps, explicitDeps));
}
private static void addLabelsAndConfigs(
Set<ConfiguredTargetKey> set, List<? extends TransitiveInfoCollection> deps) {
deps.forEach(
target -> set.add(ConfiguredTargetKey.of(target.getLabel(), target.getConfiguration())));
}
}
|
