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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.objc;
import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.devtools.build.lib.rules.objc.ObjcCommon.uniqueContainers;
import static com.google.devtools.build.lib.rules.objc.ObjcProvider.FLAG;
import static com.google.devtools.build.lib.rules.objc.ObjcProvider.FRAMEWORK_DIR;
import static com.google.devtools.build.lib.rules.objc.ObjcProvider.FRAMEWORK_FILE;
import static com.google.devtools.build.lib.rules.objc.ObjcProvider.Flag.USES_FRAMEWORKS;
import static com.google.devtools.build.lib.rules.objc.ObjcProvider.MERGE_ZIP;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableSet;
import com.google.devtools.build.lib.actions.Artifact;
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.actions.SymlinkAction;
import com.google.devtools.build.lib.rules.cpp.CcCommon;
import com.google.devtools.build.lib.rules.objc.ReleaseBundlingSupport.SplitArchTransition.ConfigurationDistinguisher;
import com.google.devtools.build.lib.vfs.PathFragment;
/**
* Implementation for {@code ios_framework}.
*/
public class IosFramework extends ReleaseBundlingTargetFactory {
@VisibleForTesting static final String MINIMUM_OS_VERSION = "8.0";
public IosFramework() {
super(
ReleaseBundlingSupport.FRAMEWORK_BUNDLE_DIR_FORMAT,
XcodeProductType.FRAMEWORK,
ImmutableSet.of(new Attribute("binary", Mode.SPLIT)),
ConfigurationDistinguisher.FRAMEWORK);
}
@Override
protected String bundleName(RuleContext ruleContext) {
String frameworkName = null;
for (IosFrameworkProvider provider :
ruleContext.getPrerequisites("binary", Mode.SPLIT, IosFrameworkProvider.class)) {
frameworkName = provider.getFrameworkName();
}
return checkNotNull(frameworkName);
}
@Override
protected String bundleMinimumOsVersion(RuleContext ruleContext) {
String flagValue = ObjcRuleClasses.objcConfiguration(ruleContext).getMinimumOs();
return String.valueOf(
Math.max(Double.parseDouble(MINIMUM_OS_VERSION), Double.parseDouble(flagValue)));
}
/**
* Returns a map of original {@code Artifact} to symlinked {@code Artifact} inside framework
* bundle.
*/
private ImmutableMap<Artifact, Artifact> getExtraArtifacts(RuleContext ruleContext) {
IntermediateArtifacts intermediateArtifacts =
ObjcRuleClasses.intermediateArtifacts(ruleContext);
ImmutableList<Artifact> headers = ImmutableList.copyOf(CcCommon.getHeaders(ruleContext));
ImmutableMap.Builder<Artifact, Artifact> builder = new ImmutableMap.Builder<>();
// Create framework binary
Artifact frameworkBinary =
outputArtifact(ruleContext, new PathFragment(bundleName(ruleContext)));
builder.put(intermediateArtifacts.combinedArchitectureBinary(), frameworkBinary);
// Create framework headers
for (Artifact header : headers) {
Artifact frameworkHeader =
outputArtifact(ruleContext, new PathFragment("Headers/" + header.getFilename()));
builder.put(header, frameworkHeader);
}
return builder.build();
}
@Override
protected ObjcProvider exposedObjcProvider(RuleContext ruleContext) throws InterruptedException {
// Assemble framework binary and headers in the label-scoped location, so that it's possible to
// pass -F X.framework to the compiler and -framework X to the linker. This mimics usage of
// frameworks when built from Xcode.
// To do this, we symlink all required artifacts into destination and pass them to
// FRAMEWORK_IMPORTS list, thus utilizing ObjcFramework rule to do the work of propagating
// them correctly.
Iterable<Artifact> frameworkImports = getExtraArtifacts(ruleContext).values();
ObjcProvider frameworkProvider =
new ObjcProvider.Builder()
.add(MERGE_ZIP, ruleContext.getImplicitOutputArtifact(ReleaseBundlingSupport.IPA))
.add(FLAG, USES_FRAMEWORKS)
.addAll(FRAMEWORK_FILE, frameworkImports)
.addAll(
FRAMEWORK_DIR,
uniqueContainers(frameworkImports, ObjcCommon.FRAMEWORK_CONTAINER_TYPE))
.build();
return frameworkProvider;
}
@Override
protected void configureTarget(
RuleConfiguredTargetBuilder target,
RuleContext ruleContext,
ReleaseBundlingSupport releaseBundlingSupport) {
// Create generating actions for framework artifacts
for (ImmutableMap.Entry<Artifact, Artifact> entry : getExtraArtifacts(ruleContext).entrySet()) {
ruleContext.registerAction(
new SymlinkAction(
ruleContext.getActionOwner(),
entry.getKey(),
entry.getValue(),
"Symlinking framework artifact"));
}
}
/**
* Returns an artifact at given path under "package/_frameworks/bundleName.framework" directory.
*/
private Artifact outputArtifact(RuleContext ruleContext, PathFragment path) {
PathFragment frameworkRoot =
new PathFragment(
new PathFragment("_frameworks"),
new PathFragment(bundleName(ruleContext) + ".framework"),
path);
return ruleContext.getPackageRelativeArtifact(
frameworkRoot, ruleContext.getBinOrGenfilesDirectory());
}
}
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