1 files changed, 73 insertions, 0 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/bazel/rules/BazelBaseRuleClasses.java b/src/main/java/com/google/devtools/build/lib/bazel/rules/BazelBaseRuleClasses.java
new file mode 100644
index 0000000000..a1b27fee82
--- /dev/null
+++ b/src/main/java/com/google/devtools/build/lib/bazel/rules/BazelBaseRuleClasses.java
@@ -0,0 +1,73 @@
+// 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.bazel.rules;
+
+import static com.google.devtools.build.lib.packages.Attribute.attr;
+import static com.google.devtools.build.lib.packages.Type.BOOLEAN;
+import static com.google.devtools.build.lib.packages.Type.LICENSE;
+import static com.google.devtools.build.lib.packages.Type.STRING_LIST;
+
+import com.google.common.collect.ImmutableSet;
+import com.google.devtools.build.lib.analysis.BaseRuleClasses;
+import com.google.devtools.build.lib.analysis.BlazeRule;
+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.packages.RuleClass.Builder;
+import com.google.devtools.build.lib.packages.RuleClass.Builder.RuleClassType;
+
+/**
+ * The foundational rule templates to help in real rule construction. Only attributes truly common
+ * to all rules go in here.  Attributes such as "out", "outs", "src" and "srcs" exhibit enough
+ * variation that we declare them explicitly for each rule.  This leads to stricter error checking
+ * and prevents users from inadvertently using an attribute that doesn't actually do anything.
+ */
+public class BazelBaseRuleClasses {
+  public static final ImmutableSet<String> ALLOWED_RULE_CLASSES =
+      ImmutableSet.of("filegroup", "genrule", "Fileset");
+
+  /**
+   * A base rule for all binary rules.
+   */
+  @BlazeRule(name = "$binary_base_rule",
+               type = RuleClassType.ABSTRACT)
+  public static final class BinaryBaseRule implements RuleDefinition {
+    @Override
+    public RuleClass build(Builder builder, RuleDefinitionEnvironment env) {
+      return builder
+          .add(attr("args", STRING_LIST)
+              .nonconfigurable("policy decision: should be consistent across configurations"))
+          .add(attr("output_licenses", LICENSE))
+          .add(attr("$is_executable", BOOLEAN).value(true)
+              .nonconfigurable("Called from RunCommand.isExecutable, which takes a Target"))
+          .build();
+    }
+  }
+
+  /**
+   * Rule class for rules in error.
+   */
+  @BlazeRule(name = "$error_rule",
+               type = RuleClassType.ABSTRACT,
+               ancestors = { BaseRuleClasses.BaseRule.class })
+  public static final class ErrorRule implements RuleDefinition {
+    @Override
+    public RuleClass build(Builder builder, RuleDefinitionEnvironment env) {
+      return builder
+          .publicByDefault()
+          .build();
+    }
+  }
+}