Python forms designer now supports negative doubles as method parameters.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/branches/3.0@4754 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/AddIns/BackendBindings/Python/PythonBinding/Project/Src/PythonCodeDeserializer.cs

@@ -220,6 +220,8 @@ namespace ICSharpCode.PythonBinding
 		{
 			if (value is int) {
 				return -1 * (int)value;
+			} else if (value is double) {
+				return -1 * (double)value;
 			}
 			return value;
 		}

src/AddIns/BackendBindings/Python/PythonBinding/Test/Designer/DeserializeMethodParametersTestFixture.cs

@@ -44,6 +44,19 @@ namespace PythonBinding.Tests.Designer
 
 			Assert.AreEqual(expectedArgs, args);
 		}
+
+		[Test]
+		public void NegativeDoubleParameter()
+		{			
+			List<object> expectedArgs = new List<object>();
+			expectedArgs.Add(-1.0);
+			
+			string code = "TestClass(-1.0)";
+			CallExpression callExpression = PythonParserHelper.GetCallExpression(code);
+			List<object> args = deserializer.GetArguments(callExpression);
+
+			Assert.AreEqual(expectedArgs, args);
+		}	
 		
 		[Test]
 		public void EnumParameter()