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// 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.apple;
import com.google.common.base.Optional;
import com.google.devtools.build.lib.analysis.TransitiveInfoProvider;
import com.google.devtools.build.lib.concurrent.ThreadSafety.Immutable;
/**
* Provides a version of xcode based on a combination of the {@code --xcode_version} build flag
* and a {@code xcode_config} target. This version of xcode should be used for selecting apple
* toolchains and SDKs.
*/
@Immutable
public final class XcodeConfigProvider implements TransitiveInfoProvider {
private final Optional<DottedVersion> xcodeVersion;
XcodeConfigProvider(DottedVersion xcodeVersion) {
this.xcodeVersion = Optional.of(xcodeVersion);
}
private XcodeConfigProvider() {
this.xcodeVersion = Optional.absent();
}
/**
* Returns a {@link XcodeConfigProvider} with no xcode version specified. The host system
* default xcode should be used. See {@link #getXcodeVersion}.
*/
static XcodeConfigProvider hostSystemDefault() {
return new XcodeConfigProvider();
}
/**
* Returns either an explicit xcode version which should be used in actions which require an
* apple toolchain, or {@link Optional#absent} if the host system default should be used.
*/
public Optional<DottedVersion> getXcodeVersion() {
return xcodeVersion;
}
}
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