"I have changed access modifier from Internal to Public . These classes are being refered outside. (#742)

src/Microsoft.SqlTools.ServiceLayer/BatchParser/ExecutionEngineCode/Batch.cs

@@ -17,7 +17,7 @@ namespace Microsoft.SqlTools.ServiceLayer.BatchParser.ExecutionEngineCode
     /// <summary>
     /// Single batch of SQL command
     /// </summary>
-    internal class Batch
+    public class Batch
     {
         #region Private methods
 

src/Microsoft.SqlTools.ServiceLayer/BatchParser/ExecutionEngineCode/BatchErrorEventArgs.cs

@@ -11,7 +11,7 @@ namespace Microsoft.SqlTools.ServiceLayer.BatchParser.ExecutionEngineCode
     /// <summary>
     /// Error totalAffectedRows for a Batch
     /// </summary>
-    internal class BatchErrorEventArgs : EventArgs
+    public class BatchErrorEventArgs : EventArgs
     {
         #region Private Fields
         private string message = string.Empty;

src/Microsoft.SqlTools.ServiceLayer/BatchParser/ExecutionEngineCode/BatchMessageEventArgs.cs

@@ -11,25 +11,25 @@ namespace Microsoft.SqlTools.ServiceLayer.BatchParser.ExecutionEngineCode
     /// <summary>
     /// Event args for notification about non-error message
     /// </summary>
-    internal class BatchMessageEventArgs : EventArgs
+    public class BatchMessageEventArgs : EventArgs
     {
         private readonly string message = string.Empty;
         private readonly string detailedMessage = string.Empty;
         private readonly SqlError error;
-                
-        private BatchMessageEventArgs()
+
+        public BatchMessageEventArgs()
         {
         }
 
-        internal BatchMessageEventArgs(string msg)
+        public BatchMessageEventArgs(string msg)
             : this(string.Empty, msg)
         {            
         }
 
-        internal BatchMessageEventArgs(string detailedMsg, string msg) : this(detailedMsg, msg, null)
+        public BatchMessageEventArgs(string detailedMsg, string msg) : this(detailedMsg, msg, null)
         {
         }
-        internal BatchMessageEventArgs(string detailedMsg, string msg, SqlError error)
+        public BatchMessageEventArgs(string detailedMsg, string msg, SqlError error)
         {
             message = msg;
             detailedMessage = detailedMsg;

src/Microsoft.SqlTools.ServiceLayer/BatchParser/ExecutionEngineCode/BatchParser.cs

@@ -10,7 +10,7 @@ namespace Microsoft.SqlTools.ServiceLayer.BatchParser.ExecutionEngineCode
     /// <summary>
     /// Class that parses queries into batches
     /// </summary>
-    internal class BatchParser : 
+    public class BatchParser : 
         ICommandHandler, 
         IVariableResolver
     {

src/Microsoft.SqlTools.ServiceLayer/BatchParser/ExecutionEngineCode/BatchParserExecutionErrorEventArgs.cs

@@ -8,7 +8,7 @@ namespace Microsoft.SqlTools.ServiceLayer.BatchParser.ExecutionEngineCode
     /// <summary>
     /// Class associated with batch parser execution errors
     /// </summary>
-    internal class BatchParserExecutionErrorEventArgs : BatchErrorEventArgs
+    public class BatchParserExecutionErrorEventArgs : BatchErrorEventArgs
     {
         private readonly ScriptMessageType messageType;
 

src/Microsoft.SqlTools.ServiceLayer/BatchParser/ExecutionEngineCode/BatchParserExecutionFinishedEventArgs.cs

@@ -10,13 +10,13 @@ namespace Microsoft.SqlTools.ServiceLayer.BatchParser.ExecutionEngineCode
     /// <summary>
     /// Class associated with batch parser execution finished event
     /// </summary>
-    internal class BatchParserExecutionFinishedEventArgs : EventArgs
+    public class BatchParserExecutionFinishedEventArgs : EventArgs
     {
         
         private readonly Batch batch = null;
         private readonly ScriptExecutionResult result;
 
-        private BatchParserExecutionFinishedEventArgs() 
+        public BatchParserExecutionFinishedEventArgs() 
         {
         }
 

src/Microsoft.SqlTools.ServiceLayer/BatchParser/ExecutionEngineCode/BatchParserExecutionStartEventArgs.cs

@@ -11,7 +11,7 @@ namespace Microsoft.SqlTools.ServiceLayer.BatchParser.ExecutionEngineCode
     /// <summary>
     /// Class associated with batch parser execution start event
     /// </summary>
-    internal class BatchParserExecutionStartEventArgs : EventArgs
+    public class BatchParserExecutionStartEventArgs : EventArgs
     {
         
         private readonly Batch batch = null;

src/Microsoft.SqlTools.ServiceLayer/BatchParser/ExecutionEngineCode/BatchParserSqlCmd.cs

@@ -14,7 +14,7 @@ namespace Microsoft.SqlTools.ServiceLayer.BatchParser.ExecutionEngineCode
     /// <summary>
     /// Class for handling SQL CMD by Batch Parser
     /// </summary>
-    internal class BatchParserSqlCmd : BatchParser
+    public class BatchParserSqlCmd : BatchParser
     {
         /// <summary>
         /// The internal variables that can be used in SqlCommand substitution.

src/Microsoft.SqlTools.ServiceLayer/BatchParser/ExecutionEngineCode/BatchResultSetEventArgs.cs

@@ -11,17 +11,17 @@ namespace Microsoft.SqlTools.ServiceLayer.BatchParser.ExecutionEngineCode
     /// <summary>
     /// Class associated with setting batch results
     /// </summary>
-    internal class BatchResultSetEventArgs : EventArgs
+    public class BatchResultSetEventArgs : EventArgs
     {
         
         private readonly IDataReader dataReader = null;
         private readonly ShowPlanType expectedShowPlan = ShowPlanType.None;
-        
+
         /// <summary>
         /// Default constructor
         /// </summary>
         /// <param name="dataReader"></param>
-        internal BatchResultSetEventArgs(IDataReader dataReader, ShowPlanType expectedShowPlan)
+        public BatchResultSetEventArgs(IDataReader dataReader, ShowPlanType expectedShowPlan)
         {
             this.dataReader = dataReader;
             this.expectedShowPlan = expectedShowPlan;

src/Microsoft.SqlTools.ServiceLayer/BatchParser/ExecutionEngineCode/ScriptExecutionResult.cs

@@ -8,7 +8,7 @@ using System;
 namespace Microsoft.SqlTools.ServiceLayer.BatchParser.ExecutionEngineCode
 {
     [Flags]
-    internal enum ScriptExecutionResult
+    public enum ScriptExecutionResult
     {
         Success = 0x1,
         Failure = 0x2,  

src/Microsoft.SqlTools.ServiceLayer/BatchParser/ExecutionEngineCode/ScriptMessageType.cs

@@ -5,7 +5,7 @@
 
 namespace Microsoft.SqlTools.ServiceLayer.BatchParser.ExecutionEngineCode
 {
-    internal enum ScriptMessageType
+    public enum ScriptMessageType
     {
         FatalError,
         Error,

src/Microsoft.SqlTools.ServiceLayer/BatchParser/ExecutionEngineCode/ShowPlanType.cs

@@ -6,7 +6,7 @@
 namespace Microsoft.SqlTools.ServiceLayer.BatchParser.ExecutionEngineCode
 {
     [System.Flags]
-    internal enum ShowPlanType
+    public enum ShowPlanType
     {
         None = 0x0,
         ActualExecutionShowPlan = 0x1,

src/Microsoft.SqlTools.ServiceLayer/BatchParser/ExecutionEngineCode/TextSpan.cs

@@ -5,7 +5,7 @@
 
 namespace Microsoft.SqlTools.ServiceLayer.BatchParser.ExecutionEngineCode
 {
-    internal struct TextSpan
+    public struct TextSpan
     {        
         public int iEndIndex;
         public int iEndLine;