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
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
// Copyright 2015 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.objc;
import static com.google.devtools.build.lib.collect.nestedset.Order.STABLE_ORDER;
import static com.google.devtools.build.lib.rules.objc.XcodeProductType.LIBRARY_STATIC;
import com.google.common.collect.ImmutableList;
import com.google.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.analysis.ConfiguredTarget;
import com.google.devtools.build.lib.analysis.RuleConfiguredTarget.Mode;
import com.google.devtools.build.lib.analysis.RuleConfiguredTargetBuilder;
import com.google.devtools.build.lib.analysis.RuleContext;
import com.google.devtools.build.lib.analysis.RunfilesProvider;
import com.google.devtools.build.lib.collect.nestedset.NestedSetBuilder;
import com.google.devtools.build.lib.packages.BuildType;
import com.google.devtools.build.lib.packages.RuleClass.ConfiguredTargetFactory.RuleErrorException;
import com.google.devtools.build.lib.rules.RuleConfiguredTargetFactory;
import com.google.devtools.build.lib.syntax.Type;
import com.google.devtools.build.lib.vfs.PathFragment;
import java.util.List;
/**
* Implementation for the "j2objc_library" rule, which exports ObjC source files translated from
* Java source files in java_library rules to dependent objc_binary rules for compilation and
* linking into the final application bundle. See {@link J2ObjcLibraryBaseRule} for details.
*/
public class J2ObjcLibrary implements RuleConfiguredTargetFactory {
public static final String NO_ENTRY_CLASS_ERROR_MSG =
"Entry classes must be specified when flag --compilationMode=opt is on in order to"
+ " perform J2ObjC dead code stripping.";
public static final List<String> J2OBJC_SUPPORTED_RULES = ImmutableList.of(
"java_import",
"java_library",
"proto_library");
@Override
public ConfiguredTarget create(RuleContext ruleContext)
throws InterruptedException, RuleErrorException {
checkAttributes(ruleContext);
if (ruleContext.hasErrors()) {
return null;
}
J2ObjcEntryClassProvider j2ObjcEntryClassProvider = new J2ObjcEntryClassProvider.Builder()
.addTransitive(ruleContext)
.addEntryClasses(ruleContext.attributes().get("entry_classes", Type.STRING_LIST))
.build();
ObjcProvider.Builder objcProviderBuilder =
new ObjcProvider.Builder()
.addTransitiveAndPropagate(
ruleContext.getPrerequisites("deps", Mode.TARGET, ObjcProvider.class));
XcodeProvider.Builder xcodeProviderBuilder = new XcodeProvider.Builder();
XcodeSupport xcodeSupport =
new XcodeSupport(ruleContext)
.addDependencies(xcodeProviderBuilder, new Attribute("deps", Mode.TARGET));
ObjcProvider objcProvider = objcProviderBuilder.build();
xcodeSupport.addXcodeSettings(xcodeProviderBuilder, objcProvider, LIBRARY_STATIC);
J2ObjcMappingFileProvider j2ObjcMappingFileProvider = J2ObjcMappingFileProvider.union(
ruleContext.getPrerequisites("deps", Mode.TARGET, J2ObjcMappingFileProvider.class));
return new RuleConfiguredTargetBuilder(ruleContext)
.setFilesToBuild(NestedSetBuilder.<Artifact>emptySet(STABLE_ORDER))
.add(RunfilesProvider.class, RunfilesProvider.EMPTY)
.addProvider(J2ObjcEntryClassProvider.class, j2ObjcEntryClassProvider)
.addProvider(J2ObjcMappingFileProvider.class, j2ObjcMappingFileProvider)
.addProvider(ObjcProvider.class, objcProvider)
.addProvider(XcodeProvider.class, xcodeProviderBuilder.build())
.build();
}
/**
* Returns header search paths necessary to compile the J2ObjC-generated code from a single
* target.
*
* @param ruleContext the rule context
* @param objcFileRootExecPath the exec path under which all J2ObjC-generated file resides
* @param sourcesToTranslate the source files to be translated by J2ObjC in a single target
*/
public static Iterable<PathFragment> j2objcSourceHeaderSearchPaths(RuleContext ruleContext,
PathFragment objcFileRootExecPath, Iterable<Artifact> sourcesToTranslate) {
PathFragment genRoot = ruleContext.getConfiguration().getGenfilesFragment();
ImmutableList.Builder<PathFragment> headerSearchPaths = ImmutableList.builder();
headerSearchPaths.add(objcFileRootExecPath);
// We add another header search path with gen root if we have generated sources to translate.
for (Artifact sourceToTranslate : sourcesToTranslate) {
if (!sourceToTranslate.isSourceArtifact()) {
headerSearchPaths.add(new PathFragment(objcFileRootExecPath, genRoot));
return headerSearchPaths.build();
}
}
return headerSearchPaths.build();
}
private static void checkAttributes(RuleContext ruleContext) {
checkAttributes(ruleContext, "deps");
checkAttributes(ruleContext, "exports");
}
private static void checkAttributes(RuleContext ruleContext, String attributeName) {
if (!ruleContext.attributes().has(attributeName, BuildType.LABEL_LIST)) {
return;
}
List<String> entryClasses = ruleContext.attributes().get("entry_classes", Type.STRING_LIST);
J2ObjcConfiguration j2objcConfiguration = ruleContext.getFragment(J2ObjcConfiguration.class);
if (j2objcConfiguration.removeDeadCode() && (entryClasses == null || entryClasses.isEmpty())) {
ruleContext.attributeError("entry_classes", NO_ENTRY_CLASS_ERROR_MSG);
}
}
}
|
