1 files changed, 56 insertions, 0 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/rules/platform/PlatformBaseRule.java b/src/main/java/com/google/devtools/build/lib/rules/platform/PlatformBaseRule.java
new file mode 100644
index 0000000000..b11fb911a8
--- /dev/null
+++ b/src/main/java/com/google/devtools/build/lib/rules/platform/PlatformBaseRule.java
@@ -0,0 +1,56 @@
+// 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.platform;
+
+import static com.google.devtools.build.lib.packages.Attribute.attr;
+
+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.packages.RuleClass;
+import com.google.devtools.build.lib.syntax.Type;
+
+/**
+ * Describes the common settings for all platform-related rules.
+ */
+public class PlatformBaseRule implements RuleDefinition{
+
+  private static final String RULE_NAME = "$platform_base_rule";
+
+  @Override
+  public RuleClass build(RuleClass.Builder builder, RuleDefinitionEnvironment env) {
+    return builder
+        .override(
+            attr("tags", Type.STRING_LIST)
+                // No need to show up in ":all", etc. target patterns.
+                .value(ImmutableList.of("manual"))
+                .nonconfigurable("low-level attribute, used in platform configuration"))
+        .exemptFromConstraintChecking("this rule helps *define* a constraint")
+        .removeAttribute("deps")
+        .removeAttribute("data")
+        .build();
+  }
+
+  @Override
+  public Metadata getMetadata() {
+    return RuleDefinition.Metadata.builder()
+        .name(RULE_NAME)
+        .type(RuleClass.Builder.RuleClassType.ABSTRACT)
+        .ancestors(BaseRuleClasses.RuleBase.class)
+        .build();
+  }
+
+}