1 files changed, 95 insertions, 0 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/rules/objc/AppleStubBinaryRule.java b/src/main/java/com/google/devtools/build/lib/rules/objc/AppleStubBinaryRule.java
new file mode 100644
index 0000000000..f2e2c59a2d
--- /dev/null
+++ b/src/main/java/com/google/devtools/build/lib/rules/objc/AppleStubBinaryRule.java
@@ -0,0 +1,95 @@
+// 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.objc;
+
+import static com.google.devtools.build.lib.packages.Attribute.attr;
+import static com.google.devtools.build.lib.packages.BuildType.LABEL_LIST;
+import static com.google.devtools.build.lib.syntax.Type.STRING;
+
+import com.google.common.collect.ImmutableList;
+import com.google.devtools.build.lib.analysis.BaseRuleClasses;
+import com.google.devtools.build.lib.analysis.RuleDefinition;
+import com.google.devtools.build.lib.analysis.RuleDefinitionEnvironment;
+import com.google.devtools.build.lib.analysis.TransitiveInfoProvider;
+import com.google.devtools.build.lib.packages.ImplicitOutputsFunction;
+import com.google.devtools.build.lib.packages.RuleClass;
+import com.google.devtools.build.lib.packages.RuleClass.Builder;
+import com.google.devtools.build.lib.rules.apple.AppleConfiguration;
+
+/** Rule definition for apple_stub_binary. */
+public class AppleStubBinaryRule implements RuleDefinition {
+
+  public static final String XCENV_BASED_PATH_ATTR = "xcenv_based_path";
+
+  @Override
+  public RuleClass build(Builder builder, RuleDefinitionEnvironment env) {
+    MultiArchSplitTransitionProvider splitTransitionProvider =
+        new MultiArchSplitTransitionProvider();
+    return builder
+        .requiresConfigurationFragments(ObjcConfiguration.class, AppleConfiguration.class)
+        /* <!-- #BLAZE_RULE(apple_stub_binary).ATTRIBUTE(xcenv_based_path) -->
+        The path to the stub executable within an Xcode platform or SDK bundle. This path must be
+        rooted at either <code>$(SDKROOT)</code> or <code>$(PLATFORM_DIR)</code> (written with
+        parentheses, as they are "Make" variables, not shell variables).
+        <!-- #END_BLAZE_RULE.ATTRIBUTE -->*/
+        .add(attr(XCENV_BASED_PATH_ATTR, STRING))
+        /* <!-- #BLAZE_RULE(apple_stub_binary).ATTRIBUTE(deps) -->
+        The list of targets whose resources will be included in the final bundle.
+        <!-- #END_BLAZE_RULE.ATTRIBUTE -->*/
+        .add(
+            attr("deps", LABEL_LIST)
+                .direct_compile_time_input()
+                .mandatoryNativeProviders(
+                    ImmutableList.<Class<? extends TransitiveInfoProvider>>of(ObjcProvider.class))
+                .allowedFileTypes()
+                .cfg(splitTransitionProvider))
+        /*<!-- #BLAZE_RULE(apple_stub_binary).IMPLICIT_OUTPUTS -->
+        <ul>
+         <li><code><var>name</var></code>: the stub executable copied from the Xcode
+             platform/SDK location.</li>
+        </ul>
+        <!-- #END_BLAZE_RULE.IMPLICIT_OUTPUTS -->*/
+        .setImplicitOutputsFunction(
+            ImplicitOutputsFunction.fromFunctions(ObjcRuleClasses.LIPOBIN_OUTPUT))
+        .build();
+  }
+
+  @Override
+  public Metadata getMetadata() {
+    return RuleDefinition.Metadata.builder()
+        .name("apple_stub_binary")
+        .factoryClass(AppleStubBinary.class)
+        .ancestors(
+            BaseRuleClasses.BaseRule.class,
+            ObjcRuleClasses.PlatformRule.class,
+            ObjcRuleClasses.XcrunRule.class)
+        .build();
+  }
+}
+
+/*<!-- #BLAZE_RULE (NAME = apple_stub_binary, TYPE = BINARY, FAMILY = Objective-C) -->
+
+<p>This rule copies a stub executable (such as that used by a watchOS application or an iMessage
+sticker pack) from a location in an Xcode platform or SDK bundle to the output.</p>
+
+<p>This rule is meant to be used internally by the Apple bundling rules and does has limited use
+outside of that. Its purpose is to provide target uniformity across all Apple bundles whether they
+contain a user binary or a stub binary and to ensure that the platform transition is still present
+for those stubs so that platform selection works as expected in downstream resource dependencies.
+</p>
+
+${IMPLICIT_OUTPUTS}
+
+<!-- #END_BLAZE_RULE -->*/