Redesign xcode_config rule to be evaluated at the level of configuration instead of target depss

--
MOS_MIGRATED_REVID=113398355

1 files changed, 69 insertions, 0 deletions

diff --git a/src/main/java/com/google/devtools/build/lib/rules/apple/XcodeVersionRuleData.java b/src/main/java/com/google/devtools/build/lib/rules/apple/XcodeVersionRuleData.java
new file mode 100644
index 0000000000..02bf38dc48
--- /dev/null
+++ b/src/main/java/com/google/devtools/build/lib/rules/apple/XcodeVersionRuleData.java
@@ -0,0 +1,69 @@
+// 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.collect.ImmutableList;
+import com.google.devtools.build.lib.cmdline.Label;
+import com.google.devtools.build.lib.packages.NonconfigurableAttributeMapper;
+import com.google.devtools.build.lib.packages.Rule;
+import com.google.devtools.build.lib.syntax.Type;
+
+import java.util.List;
+
+/**
+ * A tuple containing the information in a single target of the {@code xcode_version} rule.
+ * A single target of this rule contains an official version label decided by Apple and a number
+ *  of supported aliases one might use to reference this version.
+ *
+ * <p>For example, one may want to reference official xcode version 7.0.1 using the "7" or
+ * "7.0" aliases.
+ */
+public class XcodeVersionRuleData {
+  private final Label label;
+  private final DottedVersion version;
+  private final ImmutableList<String> aliases;
+
+  XcodeVersionRuleData(Label label, Rule rule) {
+    NonconfigurableAttributeMapper attrMapper =
+        NonconfigurableAttributeMapper.of(rule);
+
+    this.label = label;
+    this.version = DottedVersion.fromString(
+        attrMapper.get(XcodeVersionRule.VERSION_ATTR_NAME, Type.STRING));
+    this.aliases = ImmutableList.copyOf(
+        attrMapper.get(XcodeVersionRule.ALIASES_ATTR_NAME, Type.STRING_LIST));
+  }
+
+  /**
+   * Returns the label of the owning target of this provider.
+   */
+  public Label getLabel() {
+    return label;
+  }
+
+  /**
+   * Returns the official xcode version the owning {@code xcode_version} target is referencing.
+   */
+  public DottedVersion getVersion() {
+    return version;
+  }
+
+  /**
+   * Returns the accepted string aliases for this xcode version.
+   */
+  public List<String> getAliases() {
+    return aliases;
+  }
+}