Simplify RuleClassProviders by making most RuleSets have their own class.

PiperOrigin-RevId: 184540561

2 files changed, 53 insertions, 0 deletions

diff --git a/src/main/java/com/google/devtools/build/lib/rules/platform/BUILD b/src/main/java/com/google/devtools/build/lib/rules/platform/BUILD
index 9908d64d28..c564fce0de 100644
--- a/src/main/java/com/google/devtools/build/lib/rules/platform/BUILD
+++ b/src/main/java/com/google/devtools/build/lib/rules/platform/BUILD
@@ -15,6 +15,7 @@ java_library(
     ]),
     deps = [
         "//src/main/java/com/google/devtools/build/lib:build-base",
+        "//src/main/java/com/google/devtools/build/lib:core-rules",
         "//src/main/java/com/google/devtools/build/lib:packages",
         "//src/main/java/com/google/devtools/build/lib:skylarkinterface",
         "//src/main/java/com/google/devtools/build/lib/analysis/platform",
diff --git a/src/main/java/com/google/devtools/build/lib/rules/platform/PlatformRules.java b/src/main/java/com/google/devtools/build/lib/rules/platform/PlatformRules.java
new file mode 100644
index 0000000000..6eaa8859ed
--- /dev/null
+++ b/src/main/java/com/google/devtools/build/lib/rules/platform/PlatformRules.java
@@ -0,0 +1,52 @@
+// Copyright 2018 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 com.google.common.collect.ImmutableList;
+import com.google.devtools.build.lib.analysis.ConfiguredRuleClassProvider.Builder;
+import com.google.devtools.build.lib.analysis.ConfiguredRuleClassProvider.RuleSet;
+import com.google.devtools.build.lib.analysis.PlatformConfigurationLoader;
+import com.google.devtools.build.lib.analysis.PlatformOptions;
+import com.google.devtools.build.lib.rules.core.CoreRules;
+
+/**
+ * Rules for supporting different platforms in Bazel.
+ */
+public class PlatformRules implements RuleSet {
+  public static final PlatformRules INSTANCE = new PlatformRules();
+
+  protected PlatformRules() {
+    // Use the static INSTANCE field instead.
+  }
+
+  @Override
+  public void init(Builder builder) {
+    builder.addConfigurationOptions(PlatformOptions.class);
+    builder.addConfigurationFragment(new PlatformConfigurationLoader());
+
+    builder.addRuleDefinition(new PlatformBaseRule());
+    builder.addRuleDefinition(new ConstraintSettingRule());
+    builder.addRuleDefinition(new ConstraintValueRule());
+    builder.addRuleDefinition(new PlatformRule());
+
+    builder.addRuleDefinition(new ToolchainRule());
+
+    builder.addSkylarkAccessibleTopLevels("platform_common", new PlatformCommon());
+  }
+
+  @Override
+  public ImmutableList<RuleSet> requires() {
+    return ImmutableList.of(CoreRules.INSTANCE);
+  }
+}