Fixed SD2-1363: Exception is thrown using incorrect VB syntax.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/branches/2.1@2603 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/Libraries/NRefactory/Project/Src/Parser/VBNet/VBNET.ATG

@@ -2413,8 +2413,6 @@ EmbeddedStatement<out Statement statement>
 	| /* 10.8.1 */
 	"If" (. Location ifStartLocation = t.Location; .) Expr<out expr> [ "Then" ] 
 	(	
-		IF (IsEndStmtAhead()) "End" (. statement = new IfElseStatement(expr, new EndStatement()); statement.StartLocation = ifStartLocation; statement.EndLocation = t.Location; .) 
-		|
 		/* multiline if statement */
 		EndOfStmt Block<out embeddedStatement>
 		(.
@@ -2449,24 +2447,17 @@ EmbeddedStatement<out Statement statement>
 			ifStatement.EndLocation = t.Location;
 			statement = ifStatement;
 		.)
-		| /* singleline if statement */
+	|	/* singleline if statement */
-		EmbeddedStatement<out embeddedStatement>
 		(.
-			IfElseStatement ifStatement = new IfElseStatement(expr, embeddedStatement);
+			IfElseStatement ifStatement = new IfElseStatement(expr);
 			ifStatement.StartLocation = ifStartLocation;
 		.)
-		{ ":" EmbeddedStatement<out embeddedStatement> (. ifStatement.TrueStatement.Add(embeddedStatement); .) }
+		SingleLineStatementList<ifStatement.TrueStatement>
 		[
-			"Else" [ EmbeddedStatement<out embeddedStatement> ]
+			"Else"
-			(.
+			[ SingleLineStatementList<ifStatement.FalseStatement> ]
-				ifStatement.FalseStatement.Add(embeddedStatement);
-			.)
-			{
-				":" EmbeddedStatement<out embeddedStatement>
-				(. ifStatement.FalseStatement.Add(embeddedStatement); .)
-			}
 		]
-		(. ifStatement.EndLocation = ifStartLocation; statement = ifStatement; .)
+		(. ifStatement.EndLocation = t.Location; statement = ifStatement; .)
 	)
 	| /* 10.8.2 */
 	"Select" [ "Case" ] Expr<out expr> EndOfStmt
@@ -2534,6 +2525,19 @@ EmbeddedStatement<out Statement statement>
 		"End" "Using"
 .
 
+SingleLineStatementList<List<Statement> list>
+(. Statement embeddedStatement = null; .)
+=
+	( "End" (. embeddedStatement = new EndStatement(); .)
+	| EmbeddedStatement<out embeddedStatement> )
+	(. if (embeddedStatement != null) list.Add(embeddedStatement); .)
+	{	":" { ":" }
+		( "End" (. embeddedStatement = new EndStatement(); .)
+		| EmbeddedStatement<out embeddedStatement> )
+		(. if (embeddedStatement != null) list.Add(embeddedStatement); .)
+	}
+.
+
 /* 10.9.2 */
 LoopControlVariable<out TypeReference type, out string name>
 (.ArrayList arrayModifiers = null;

src/Libraries/NRefactory/Test/Parser/Statements/IfElseStatementTests.cs

@@ -130,6 +130,47 @@ namespace ICSharpCode.NRefactory.Tests.Ast
 			Assert.IsTrue(ifElseStatement.TrueStatement[0] is BlockStatement, "Statement was: " + ifElseStatement.TrueStatement[0]);
 			Assert.IsTrue(ifElseStatement.ElseIfSections[0].EmbeddedStatement.Children[0] is StopStatement, "Statement was: " + ifElseStatement.ElseIfSections[0].EmbeddedStatement.Children[0]);
 		}
+		[Test]
+		public void VBNetMultiStatementIfStatementTest()
+		{
+			IfElseStatement ifElseStatement = ParseUtilVBNet.ParseStatement<IfElseStatement>("If True THEN Stop : b");
+			Assert.IsFalse(ifElseStatement.Condition.IsNull);
+			Assert.AreEqual(2, ifElseStatement.TrueStatement.Count, "true count");
+			Assert.AreEqual(0, ifElseStatement.FalseStatement.Count, "false count");
+			
+			Assert.IsTrue(ifElseStatement.TrueStatement[0] is StopStatement);
+			Assert.IsTrue(ifElseStatement.TrueStatement[1] is ExpressionStatement);
+		}
+		[Test]
+		public void VBNetMultiStatementIfStatementWithEndStatementTest()
+		{
+			IfElseStatement ifElseStatement = ParseUtilVBNet.ParseStatement<IfElseStatement>("If True THEN Stop : End : b");
+			Assert.IsFalse(ifElseStatement.Condition.IsNull);
+			Assert.AreEqual(3, ifElseStatement.TrueStatement.Count, "true count");
+			Assert.AreEqual(0, ifElseStatement.FalseStatement.Count, "false count");
+			
+			Assert.IsTrue(ifElseStatement.TrueStatement[0] is StopStatement);
+			Assert.IsTrue(ifElseStatement.TrueStatement[1] is EndStatement);
+			Assert.IsTrue(ifElseStatement.TrueStatement[2] is ExpressionStatement);
+		}
+		
+		[Test]
+		public void VBNetIfWithEmptyElseTest()
+		{
+			IfElseStatement ifElseStatement = ParseUtilVBNet.ParseStatement<IfElseStatement>("If True THEN a Else");
+			Assert.IsFalse(ifElseStatement.Condition.IsNull);
+			Assert.AreEqual(1, ifElseStatement.TrueStatement.Count, "true count");
+			Assert.AreEqual(0, ifElseStatement.FalseStatement.Count, "false count");
+		}
+		
+		[Test]
+		public void VBNetIfWithMultipleColons()
+		{
+			IfElseStatement ifElseStatement = ParseUtilVBNet.ParseStatement<IfElseStatement>("If True THEN a : : b");
+			Assert.IsFalse(ifElseStatement.Condition.IsNull);
+			Assert.AreEqual(2, ifElseStatement.TrueStatement.Count, "true count");
+			Assert.AreEqual(0, ifElseStatement.FalseStatement.Count, "false count");
+		}
 		#endregion
 	}
 }