[SPARK-13157] [SQL] Support any kind of input for SQL commands.

The ```SparkSqlLexer``` currently swallows characters which have not been defined in the grammar. This causes problems with SQL commands, such as: ```add jar file:///tmp/ab/TestUDTF.jar```. In this example the `````` is swallowed.

This PR adds an extra Lexer rule to handle such input, and makes a tiny modification to the ```ASTNode```.

cc davies liancheng

Author: Herman van Hovell <hvanhovell@questtec.nl>

Closes #11052 from hvanhovell/SPARK-13157.

sql/catalyst/src/main/antlr3/org/apache/spark/sql/catalyst/parser/SparkSqlLexer.g

@@ -483,3 +483,7 @@ COMMENT
     { $channel=HIDDEN; }
   ;
 
+/* Prevent that the lexer swallows unknown characters. */
+ANY
+ :.
+ ;

sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/parser/ASTNode.scala

@@ -58,12 +58,12 @@ case class ASTNode(
   override val origin: Origin = Origin(Some(line), Some(positionInLine))
 
   /** Source text. */
-  lazy val source: String = stream.toString(startIndex, stopIndex)
+  lazy val source: String = stream.toOriginalString(startIndex, stopIndex)
 
   /** Get the source text that remains after this token. */
   lazy val remainder: String = {
     stream.fill()
-    stream.toString(stopIndex + 1, stream.size() - 1).trim()
+    stream.toOriginalString(stopIndex + 1, stream.size() - 1).trim()
   }
 
   def text: String = token.getText

sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/parser/ASTNodeSuite.scala

+/*
+ * 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.sql.catalyst.parser
+
+import org.apache.spark.SparkFunSuite
+
+class ASTNodeSuite extends SparkFunSuite {
+  test("SPARK-13157 - remainder must return all input chars") {
+    val inputs = Seq(
+      ("add jar", "file:///tmp/ab/TestUDTF.jar"),
+      ("add jar", "file:///tmp/a@b/TestUDTF.jar"),
+      ("add jar", "c:\\windows32\\TestUDTF.jar"),
+      ("add jar", "some \nbad\t\tfile\r\n.\njar"),
+      ("ADD JAR", "@*#&@(!#@$^*!@^@#(*!@#"),
+      ("SET", "foo=bar"),
+      ("SET", "foo*)(@#^*@&!#^=bar")
+    )
+    inputs.foreach {
+      case (command, arguments) =>
+        val node = ParseDriver.parsePlan(s"$command $arguments", null)
+        assert(node.remainder === arguments)
+    }
+  }
+}

sql/hive-thriftserver/src/test/scala/org/apache/spark/sql/hive/thriftserver/HiveThriftServer2Suites.scala

@@ -488,8 +488,7 @@ class HiveThriftBinaryServerSuite extends HiveThriftJdbcTest {
     }
   }
 
-  // TODO: enable this
-  ignore("SPARK-11595 ADD JAR with input path having URL scheme") {
+  test("SPARK-11595 ADD JAR with input path having URL scheme") {
     withJdbcStatement { statement =>
       val jarPath = "../hive/src/test/resources/TestUDTF.jar"
       val jarURL = s"file://${System.getProperty("user.dir")}/$jarPath"
@@ -547,8 +546,7 @@ class SingleSessionSuite extends HiveThriftJdbcTest {
   override protected def extraConf: Seq[String] =
     "--conf spark.sql.hive.thriftServer.singleSession=true" :: Nil
 
-  // TODO: enable this
-  ignore("test single session") {
+  test("test single session") {
     withMultipleConnectionJdbcStatement(
       { statement =>
         val jarPath = "../hive/src/test/resources/TestUDTF.jar"