* Src/Lexer/CSharp/Lexer.cs:

* Src/Lexer/AbstractLexer.cs: #if/#elif preprocessor directive now
  contain the arg as string representation too (arg was null).

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/branches/3.0@3937 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

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

@@ -73,10 +73,16 @@ namespace ICSharpCode.NRefactory.Parser
 				return col;
 			}
 		}
+		
+		protected bool recordRead = false;
+		protected StringBuilder recordedText = new StringBuilder ();
+		
 		protected int ReaderRead()
 		{
 			++col;
 			int val = reader.Read();
+			if (recordRead)
+				recordedText.Append ((char)val);
 			if ((val == '\r' && reader.Peek() != '\n') || val == '\n') {
 				++line;
 				col = 1;

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

@@ -1092,7 +1092,12 @@ namespace ICSharpCode.NRefactory.Parser.CSharp
 			
 			PPWhitespace();
 			if (parseIfExpression && directive == "#if" || parseElifExpression && directive == "#elif") {
+				recordedText.Length = 0;
+				recordRead = true;
 				Ast.Expression expr = PPExpression();
+				string arg = recordedText.ToString ();
+				recordRead = false;
+				
 				Location endLocation = new Location(Col, Line);
 				int c = ReaderRead();
 				if (c >= 0 && !HandleLineEnd((char)c)) {
@@ -1103,7 +1108,7 @@ namespace ICSharpCode.NRefactory.Parser.CSharp
 					}
 					SkipToEndOfLine(); // skip comment
 				}
-				return new PreprocessingDirective(directive, null, start, endLocation) { Expression = expr, LastLineEnd = lastLineEnd };
+				return new PreprocessingDirective(directive, arg, start, endLocation) { Expression = expr, LastLineEnd = lastLineEnd };
 			} else {
 				Location endLocation = new Location(Col, Line);
 				string arg = ReadToEndOfLine();