initial macro testing, maven is painful

core/src/main/scala/org/apache/spark/macros/ASTExtractor.scala

@@ -0,0 +1,35 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 org.apache.spark.macros
+
+import scala.language.experimental.macros
+import scala.reflect.macros.blackbox.Context
+
+// scalastyle:off
+
+object ASTExtractor {
+  def extractImpl(c: Context)(plan: c.Expr[Any]) = {
+    import c.universe._
+    c.Expr[Unit](q"""
+import scala.reflect.runtime.universe._
+println(showRaw($plan))""")
+  }
+  def extract(plan: Any): Unit = macro extractImpl
+}
+
+// scalastyle:on

sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala

@@ -19,6 +19,7 @@ package org.apache.spark.sql.catalyst.optimizer
 
 import scala.collection.mutable
 
+import org.apache.spark.macros.ASTExtractor
 import org.apache.spark.sql.catalyst.CustomLogger
 import org.apache.spark.sql.catalyst.analysis._
 import org.apache.spark.sql.catalyst.catalog.{InMemoryCatalog, SessionCatalog}
@@ -1397,6 +1398,7 @@ object InferFiltersFromConstraints extends Rule[LogicalPlan]
     {
       plan.transformWithPruning(_.containsAnyPattern(FILTER, JOIN)) {
         case filter @ Filter(condition, child) =>
+          ASTExtractor.extract(filter)
           CustomLogger.logMatchTime("stopTheClock : Match 1 InferFiltersFromConstraints", false)
           {
             val newFilters = filter.constraints --
@@ -1409,6 +1411,7 @@ object InferFiltersFromConstraints extends Rule[LogicalPlan]
           }
 
         case join @ Join(left, right, joinType, conditionOpt, _) =>
+          ASTExtractor.extract(join)
           CustomLogger.logMatchTime("stopTheClock : Match 2 InferFiltersFromConstraints", false)
           {
             joinType match {

sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/rules/RuleExecutor.scala

@@ -18,6 +18,7 @@
 package org.apache.spark.sql.catalyst.rules
 
 import org.apache.spark.internal.Logging
+// import org.apache.spark.macros.ASTExtractor
 import org.apache.spark.sql.catalyst.CustomLogger
 import org.apache.spark.sql.catalyst.QueryPlanningTracker
 import org.apache.spark.sql.catalyst.trees.TreeNode
@@ -210,6 +211,7 @@ abstract class RuleExecutor[TreeType <: TreeNode[_]] extends Logging {
         while (continue) {
           curPlan = batch.rules.foldLeft(curPlan) {
             case (plan, rule) =>
+              // ASTExtractor.extract(rule)
               val startTime = System.nanoTime()
               CustomLogger.checkMatch("push")
               val result =