Allow use of Exceptions to exit early out of configured-target creation, instead of passing and checking null in all helpers.

Demonstrates this pattern usage in a few select rules (e.g. AndroidBinary) where this was particularly egregious.
There are many places which can benefit from this pattern -- this change doesn't try to fix them all at once.

--
MOS_MIGRATED_REVID=123012378

1 files changed, 3 insertions, 1 deletions

diff --git a/src/main/java/com/google/devtools/build/lib/rules/python/PyBinary.java b/src/main/java/com/google/devtools/build/lib/rules/python/PyBinary.java
index f4e68f26d5..fc30ac04ed 100644
--- a/src/main/java/com/google/devtools/build/lib/rules/python/PyBinary.java
+++ b/src/main/java/com/google/devtools/build/lib/rules/python/PyBinary.java
@@ -22,6 +22,7 @@ import com.google.devtools.build.lib.analysis.Runfiles;
 import com.google.devtools.build.lib.analysis.RunfilesProvider;
 import com.google.devtools.build.lib.analysis.RunfilesSupport;
 import com.google.devtools.build.lib.collect.nestedset.NestedSet;
+import com.google.devtools.build.lib.packages.RuleClass.ConfiguredTargetFactory.RuleErrorException;
 import com.google.devtools.build.lib.rules.RuleConfiguredTargetFactory;
 import com.google.devtools.build.lib.rules.cpp.CcLinkParams;
 import com.google.devtools.build.lib.rules.cpp.CcLinkParamsProvider;
@@ -42,7 +43,8 @@ public abstract class PyBinary implements RuleConfiguredTargetFactory {
   protected abstract PythonSemantics createSemantics();
 
   @Override
-  public ConfiguredTarget create(RuleContext ruleContext) throws InterruptedException {
+  public ConfiguredTarget create(RuleContext ruleContext)
+      throws InterruptedException, RuleErrorException {
     PyCommon common = new PyCommon(ruleContext);
     common.initCommon(common.getDefaultPythonVersion());