Fixed SD2-1469: Argument out of range exception in expression finder

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/branches/3.0@3714 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/Libraries/NRefactory/Project/Src/Lexer/AbstractLexer.cs

@@ -226,7 +226,7 @@ namespace ICSharpCode.NRefactory.Parser
 			return 0;
 		}
 		
-		protected bool WasLineEnd(char ch)
+		bool WasLineEnd(char ch)
 		{
 			// Handle MS-DOS or MacOS line ends.
 			if (ch == '\r') {

src/Libraries/NRefactory/Project/Src/Lexer/CSharp/Lexer.cs

@@ -576,8 +576,8 @@ namespace ICSharpCode.NRefactory.Parser.CSharp
 			int x = Col - 1;
 			int y = Line;
 			int nextChar = ReaderRead();
-			if (nextChar == -1) {
-				errors.Error(y, x, String.Format("End of file reached inside character literal"));
+			if (nextChar == -1 || HandleLineEnd((char)nextChar)) {
+				errors.Error(y, x, String.Format("End of line reached inside character literal"));
 				return null;
 			}
 			char ch = (char)nextChar;

src/Libraries/NRefactory/Test/Lexer/CSharp/LexerPositionTests.cs

@@ -29,6 +29,7 @@ namespace ICSharpCode.NRefactory.Tests.Lexer.CSharp
 			Token t = l.NextToken();
 			Assert.AreEqual(new Location(1, 1), t.Location);
 		}
+		
 		[Test]
 		public void Test2()
 		{
@@ -37,6 +38,7 @@ namespace ICSharpCode.NRefactory.Tests.Lexer.CSharp
 			t = l.NextToken();
 			Assert.AreEqual(new Location(8, 1), t.Location);
 		}
+		
 		[Test]
 		public void TestReturn()
 		{
@@ -45,6 +47,7 @@ namespace ICSharpCode.NRefactory.Tests.Lexer.CSharp
 			t = l.NextToken();
 			Assert.AreEqual(new Location(1, 2), t.Location);
 		}
+		
 		[Test]
 		public void TestSpace()
 		{
@@ -52,6 +55,7 @@ namespace ICSharpCode.NRefactory.Tests.Lexer.CSharp
 			Token t = l.NextToken();
 			Assert.AreEqual(new Location(3, 1), t.Location);
 		}
+		
 		[Test]
 		public void TestOctNumber()
 		{
@@ -59,6 +63,7 @@ namespace ICSharpCode.NRefactory.Tests.Lexer.CSharp
 			Token t = l.NextToken();
 			Assert.AreEqual(new Location(1, 1), t.Location);
 		}
+		
 		[Test]
 		public void TestHexNumber()
 		{
@@ -68,6 +73,7 @@ namespace ICSharpCode.NRefactory.Tests.Lexer.CSharp
 			t = l.NextToken();
 			Assert.AreEqual(new Location(7, 1), t.Location);
 		}
+		
 		[Test]
 		public void TestHexNumberChar()
 		{
@@ -77,6 +83,7 @@ namespace ICSharpCode.NRefactory.Tests.Lexer.CSharp
 			t = l.NextToken();
 			Assert.AreEqual(new Location(9, 1), t.Location);
 		}
+		
 		[Test]
 		public void TestFloationPointNumber()
 		{
@@ -86,6 +93,7 @@ namespace ICSharpCode.NRefactory.Tests.Lexer.CSharp
 			t = l.NextToken();
 			Assert.AreEqual(new Location(7, 1), t.Location);
 		}
+		
 		[Test]
 		public void TestVerbatimString()
 		{
@@ -95,6 +103,7 @@ namespace ICSharpCode.NRefactory.Tests.Lexer.CSharp
 			t = l.NextToken();
 			Assert.AreEqual(new Location(9, 1), t.Location);
 		}
+		
 		[Test]
 		public void TestAtIdent()
 		{
@@ -104,6 +113,7 @@ namespace ICSharpCode.NRefactory.Tests.Lexer.CSharp
 			t = l.NextToken();
 			Assert.AreEqual(new Location(9, 1), t.Location);
 		}
+		
 		[Test]
 		public void TestNoFloationPointNumber()
 		{
@@ -115,6 +125,7 @@ namespace ICSharpCode.NRefactory.Tests.Lexer.CSharp
 			t = l.NextToken();
 			Assert.AreEqual(new Location(3, 1), t.Location);
 		}
+		
 		[Test]
 		public void TestNumber()
 		{
@@ -123,6 +134,7 @@ namespace ICSharpCode.NRefactory.Tests.Lexer.CSharp
 			t = l.NextToken();
 			Assert.AreEqual(new Location(1, 2), t.Location);
 		}
+		
 		[Test]
 		public void TestNumber2()
 		{
@@ -131,6 +143,7 @@ namespace ICSharpCode.NRefactory.Tests.Lexer.CSharp
 			t = l.NextToken();
 			Assert.AreEqual(new Location(4, 1), t.Location);
 		}
+		
 		[Test]
 		public void TestOperator()
 		{
@@ -139,5 +152,18 @@ namespace ICSharpCode.NRefactory.Tests.Lexer.CSharp
 			Assert.AreEqual(new Location(1, 1), t.Location);
 			Assert.AreEqual(Tokens.EOF, l.NextToken().kind);
 		}
+		
+		[Test]
+		public void TestPositionLineBreakAfterApostrophe()
+		{
+			// see SD2-1469
+			// the expression finder requires correct positions even when there are syntax errors
+			ILexer l = GenerateLexer("'\r\nvoid");
+			Token t = l.NextToken();
+			// the incomplete char literal should not generate a token
+			Assert.AreEqual(Tokens.Void, t.kind);
+			Assert.AreEqual(new Location(1, 2), t.Location);
+			Assert.AreEqual(Tokens.EOF, l.NextToken().kind);
+		}
 	}
 }

src/Main/Base/Test/CSharpExpressionFinderTests.cs

@@ -1147,6 +1147,20 @@ class Main {
 			Assert.AreEqual("System", result.Expression);
 			Assert.AreEqual(ExpressionContext.Namespace, result.Context);
 		}
+		
+		[Test]
+		public void SD2_1469()
+		{
+			// Test that this doesn't crash
+			const string program = @"class MainWindow
+{
+	'
+	void MainWindowDeleteEvent()
+	{
+	}
+}";
+			ef.FindFullExpression(program, 25);
+		}
 	}
 }