blob: 976914135c958ea60262d5213e3748fcaf86ee64 (
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
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
|
// Copyright 2017 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.cpp;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import com.google.devtools.build.lib.concurrent.ThreadSafety.Immutable;
import com.google.devtools.build.lib.skyframe.serialization.autocodec.AutoCodec;
import com.google.devtools.build.lib.view.config.crosstool.CrosstoolConfig.CToolchain;
import java.io.Serializable;
import java.util.List;
/** Represents a list of c++ tool flags. */
@AutoCodec
@Immutable
public class FlagList implements Serializable {
/** Represents an optional flag that can be toggled using the package features mechanism. */
@AutoCodec
@Immutable
static class OptionalFlag implements Serializable {
private final String name;
private final ImmutableList<String> flags;
@AutoCodec.Instantiator
OptionalFlag(String name, ImmutableList<String> flags) {
this.name = name;
this.flags = flags;
}
private ImmutableList<String> getFlags() {
return flags;
}
private String getName() {
return name;
}
}
private final ImmutableList<String> prefixFlags;
private final ImmutableList<OptionalFlag> optionalFlags;
private final ImmutableList<String> suffixFlags;
@AutoCodec.Instantiator
FlagList(
ImmutableList<String> prefixFlags,
ImmutableList<OptionalFlag> optionalFlags,
ImmutableList<String> suffixFlags) {
this.prefixFlags = prefixFlags;
this.optionalFlags = optionalFlags;
this.suffixFlags = suffixFlags;
}
static ImmutableList<OptionalFlag> convertOptionalOptions(
List<CToolchain.OptionalFlag> optionalFlagList) {
ImmutableList.Builder<OptionalFlag> result = ImmutableList.builder();
for (CToolchain.OptionalFlag crosstoolOptionalFlag : optionalFlagList) {
String name = crosstoolOptionalFlag.getDefaultSettingName();
result.add(new OptionalFlag(name, ImmutableList.copyOf(crosstoolOptionalFlag.getFlagList())));
}
return result.build();
}
@VisibleForTesting
ImmutableList<String> evaluate(Iterable<String> features) {
ImmutableSet<String> featureSet = ImmutableSet.copyOf(features);
ImmutableList.Builder<String> result = ImmutableList.builder();
result.addAll(prefixFlags);
for (OptionalFlag optionalFlag : optionalFlags) {
// The flag is added if the default is true and the flag is not specified,
// or if the default is false and the flag is specified.
if (featureSet.contains(optionalFlag.getName())) {
result.addAll(optionalFlag.getFlags());
}
}
result.addAll(suffixFlags);
return result.build();
}
}
|