Added support for casts and class method calls in the python code converter.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@2937 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

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

@@ -245,11 +245,13 @@ namespace ICSharpCode.PythonBinding
 			Console.WriteLine("VisitCaseLabel");
 			return null;
 		}
-		
+
+		/// <summary>
+		/// Ignore the cast and just visit the expression inside the cast.
+		/// </summary>
 		public object VisitCastExpression(CastExpression castExpression, object data)
 		{
-			Console.WriteLine("VisitCastExpression");
-			return null;
+			return castExpression.Expression.AcceptVisitor(this, data);
 		}
 		
 		public object VisitCatchClause(CatchClause catchClause, object data)
@@ -694,20 +696,23 @@ namespace ICSharpCode.PythonBinding
 		/// </summary>
 		public object VisitInvocationExpression(InvocationExpression invocationExpression, object data)
 		{					
-			// Create target object.
-			MemberReferenceExpression memberRefExpression = invocationExpression.TargetObject as MemberReferenceExpression;
-			CodeExpression targetObjectExpression = (CodeExpression)memberRefExpression.TargetObject.AcceptVisitor(this, data);
-			
-			// Create method ref.
 			CodeMethodReferenceExpression methodRef = new CodeMethodReferenceExpression();
-			methodRef.MethodName = memberRefExpression.MemberName;
-			methodRef.TargetObject = targetObjectExpression;
-			
+
+			MemberReferenceExpression memberRefExpression = invocationExpression.TargetObject as MemberReferenceExpression;
+			IdentifierExpression identifierExpression = invocationExpression.TargetObject as IdentifierExpression;
+			if (memberRefExpression != null) {
+				methodRef.MethodName = memberRefExpression.MemberName;
+				methodRef.TargetObject = (CodeExpression)memberRefExpression.TargetObject.AcceptVisitor(this, data);
+				
+			} else if (identifierExpression != null) {
+				methodRef.MethodName = identifierExpression.Identifier;
+				methodRef.TargetObject = new CodeThisReferenceExpression();
+			}
+				
 			// Create method invoke.
 			CodeMethodInvokeExpression methodInvoke = new CodeMethodInvokeExpression();
 			methodInvoke.Parameters.AddRange(ConvertExpressions(invocationExpression.Arguments));
 			methodInvoke.Method = methodRef;
-
 			return methodInvoke;
 		}
 		
@@ -1449,7 +1454,9 @@ namespace ICSharpCode.PythonBinding
 			List<CodeExpression> codeExpressions = new List<CodeExpression>();
 			foreach (Expression expression in expressions) {
 				CodeExpression convertedCodeExpression = (CodeExpression)expression.AcceptVisitor(this, null);
-				codeExpressions.Add(convertedCodeExpression);
+				if (convertedCodeExpression != null) {
+					codeExpressions.Add(convertedCodeExpression);
+				}
 			}
 			return codeExpressions.ToArray();
 		}

src/AddIns/BackendBindings/Python/PythonBinding/Test/Converter/ArrayCastConversionTestFixture.cs

@@ -0,0 +1,79 @@
+// <file>
+//     <copyright see="prj:///doc/copyright.txt"/>
+//     <license see="prj:///doc/license.txt"/>
+//     <owner name="Matthew Ward" email="mrward@users.sourceforge.net"/>
+//     <version>$Revision$</version>
+// </file>
+
+using System;
+using System.CodeDom;
+using System.CodeDom.Compiler;
+using ICSharpCode.PythonBinding;
+using NUnit.Framework;
+
+namespace PythonBinding.Tests.Converter
+{
+	/// <summary>
+	/// Tests that an array cast is correctly converted to Python.
+	/// </summary>
+	[TestFixture]
+	public class ArrayCastConversionTestFixture
+	{
+		string csharp = "class Foo\r\n" +
+						"{\r\n" +
+						"    public void Assign()\r\n" +
+						"    {\r\n" +
+						"        int[] elements = new int[10];\r\n" +
+						"        List<int[]> list = new List<int[]>();\r\n" + 
+						"        list.Add((int[])elements.Clone());\r\n" +
+						"    }\r\n" +
+						"}";
+		
+		CodeExpression expression;
+		
+		[TestFixtureSetUp]
+		public void SetUpFixture()
+		{
+			CSharpToPythonConverter converter = new CSharpToPythonConverter();
+			CodeCompileUnit unit = converter.ConvertToCodeCompileUnit(csharp);
+			if (unit.Namespaces.Count > 0) {
+				CodeNamespace ns = unit.Namespaces[0];
+				if (ns.Types.Count > 0) {
+					CodeTypeDeclaration type = ns.Types[0];
+					if (type.Members.Count > 0) {
+						CodeMemberMethod method = type.Members[0] as CodeMemberMethod;
+						if (method != null && method.Statements.Count > 0) {
+							CodeExpressionStatement statement = method.Statements[method.Statements.Count - 1] as CodeExpressionStatement;
+							if (statement != null) {
+								CodeMethodInvokeExpression methodInvokeExpression = statement.Expression as CodeMethodInvokeExpression;
+								if (methodInvokeExpression != null && methodInvokeExpression.Parameters.Count > 0) {
+									expression = methodInvokeExpression.Parameters[0];
+								}
+							}
+						}
+					}
+				}
+			}
+		}
+		
+		[Test]
+		public void CodeExpressionExists()
+		{
+			Assert.IsNotNull(expression);
+		}
+		
+		[Test]
+		public void GeneratedPythonSourceCode()
+		{
+			CSharpToPythonConverter converter = new CSharpToPythonConverter();
+			string python = converter.Convert(csharp);
+			string expectedPython = "class Foo(object):\r\n" +
+				"\tdef Assign(self):\r\n" +
+				"\t\telements = System.Array.CreateInstance(int,0)\r\n" +
+				"\t\tlist = List()\r\n" +
+				"\t\tlist.Add(elements.Clone())";
+			
+			Assert.AreEqual(expectedPython, python);
+		}
+	}
+}

src/AddIns/BackendBindings/Python/PythonBinding/Test/Converter/IntegerMethodParameterTestFixture.cs

@@ -0,0 +1,89 @@
+// <file>
+//     <copyright see="prj:///doc/copyright.txt"/>
+//     <license see="prj:///doc/license.txt"/>
+//     <owner name="Matthew Ward" email="mrward@users.sourceforge.net"/>
+//     <version>$Revision$</version>
+// </file>
+
+using System;
+using System.CodeDom;
+using System.CodeDom.Compiler;
+using ICSharpCode.PythonBinding;
+using NUnit.Framework;
+
+namespace PythonBinding.Tests.Converter
+{
+	/// <summary>
+	/// Tests that a method call is converted correctly.
+	/// </summary>
+	[TestFixture]
+	public class IntegerMethodParameterTestFixture
+	{
+		string csharp = "class Foo\r\n" +
+						"{\r\n" +
+						"    public void Print()\r\n" +
+						"    {\r\n" +
+						"        int i = 0;\r\n" +
+						"        PrintInt(i);\r\n" +
+						"    }\r\n" +
+						"}";
+		
+		CodeMethodReferenceExpression methodRefExpression;
+		
+		[TestFixtureSetUp]
+		public void SetUpFixture()
+		{
+			CSharpToPythonConverter converter = new CSharpToPythonConverter();
+			CodeCompileUnit unit = converter.ConvertToCodeCompileUnit(csharp);
+			if (unit.Namespaces.Count > 0) {
+				CodeNamespace ns = unit.Namespaces[0];
+				if (ns.Types.Count > 0) {
+					CodeTypeDeclaration type = ns.Types[0];
+					if (type.Members.Count > 0) {
+						CodeMemberMethod method = type.Members[0] as CodeMemberMethod;
+						if (method != null && method.Statements.Count > 0) {
+							CodeExpressionStatement statement = method.Statements[method.Statements.Count - 1] as CodeExpressionStatement;
+							if (statement != null) {
+								CodeMethodInvokeExpression methodInvokeExpression = statement.Expression as CodeMethodInvokeExpression;
+								if (methodInvokeExpression != null) {
+									methodRefExpression = methodInvokeExpression.Method;
+								}
+							}
+						}
+					}
+				}
+			}
+		}
+		
+		[Test]
+		public void MethodRefExpressionExists()
+		{
+			Assert.IsNotNull(methodRefExpression);
+		}
+		
+		[Test]
+		public void MethodNameIsPrintInt()
+		{
+			Assert.AreEqual("PrintInt", methodRefExpression.MethodName);
+		}
+		
+		[Test]
+		public void MethodRefTargetObjectIsThisRef()
+		{
+			Assert.IsInstanceOfType(typeof(CodeThisReferenceExpression), methodRefExpression.TargetObject);
+		}
+		
+		[Test]
+		public void GeneratedPythonSourceCode()
+		{
+			CSharpToPythonConverter converter = new CSharpToPythonConverter();
+			string python = converter.Convert(csharp);
+			string expectedPython = "class Foo(object):\r\n" +
+				"\tdef Print(self):\r\n" +
+				"\t\ti = 0\r\n" +
+				"\t\tself.PrintInt(i)";
+			
+			Assert.AreEqual(expectedPython, python);
+		}
+	}
+}

src/AddIns/BackendBindings/Python/PythonBinding/Test/CreateNewPythonProjectTestFixture.cs

@@ -7,6 +7,7 @@
 
 using System;
 using System.IO;
+using System.Text;
 using ICSharpCode.PythonBinding;
 using ICSharpCode.SharpDevelop;
 using ICSharpCode.SharpDevelop.Dom;
@@ -52,23 +53,13 @@ namespace PythonBinding.Tests
 		{
 			Assert.AreEqual(info.ProjectName, project.Name);
 		}
-
-		[Test]
-		public void TwoImports()
-		{
-			Assert.AreEqual(2, project.MSBuildProject.Imports.Count);
-		}
-		
+	
 		[Test]
 		public void Imports()
 		{
-			Microsoft.Build.BuildEngine.Import[] imports = {null, null};
-			project.MSBuildProject.Imports.CopyTo(imports, 0);
-			
-			string[] paths = new string[] {imports[0].ProjectPath, imports[1].ProjectPath};
-			
-			Assert.Contains(PythonProject.DefaultTargetsFile, paths);
-			Assert.Contains(@"$(MSBuildBinPath)\Microsoft.Common.targets", paths);
+			string[] paths = GetImportPaths();
+			Assert.Contains(PythonProject.DefaultTargetsFile, paths, "Could not find Python default target. Actual imports: " + GetArrayAsString(paths));
+			Assert.Contains(@"$(MSBuildBinPath)\Microsoft.Common.targets", paths, "Could not find Microsoft.Common.targets. Actual imports: " + GetArrayAsString(paths));
 		}
 
 		[Test]
@@ -94,5 +85,40 @@ namespace PythonBinding.Tests
 		{
 			Assert.AreEqual(ItemType.None, project.GetDefaultItemType(null));
 		}		
+
+		/// <summary>
+		/// Gets the import paths from the project.
+		/// </summary>
+		string[] GetImportPaths()
+		{
+			int count = project.MSBuildProject.Imports.Count;
+			Microsoft.Build.BuildEngine.Import[] imports = new Microsoft.Build.BuildEngine.Import[count];
+			project.MSBuildProject.Imports.CopyTo(imports, 0);
+			
+			string[] paths = new string[count];
+			for (int i = 0; i < count; ++i) {
+				Microsoft.Build.BuildEngine.Import import = imports[i];
+				paths[i] = import.ProjectPath;
+			}
+			return paths;
+		}
+		
+		/// <summary>
+		/// Takes the import paths in the project and creates a string with each import
+		/// on a new line.
+		/// </summary>
+		string GetImportPathsAsText()
+		{
+			return GetArrayAsString(GetImportPaths());
+		}
+		
+		string GetArrayAsString(string[] array)
+		{
+			StringBuilder text = new StringBuilder();
+			foreach (string item in array) {
+				text.AppendLine(item);
+			}
+			return text.ToString();
+		}
 	}
 }

src/AddIns/BackendBindings/Python/PythonBinding/Test/PythonBinding.Tests.csproj

@@ -66,7 +66,9 @@
     <Compile Include="AddInFileTestFixture.cs" />
     <Compile Include="CompilingOptionsPanelTestFixture.cs" />
     <Compile Include="Converter\AddHandlerConversionTestFixture.cs" />
+    <Compile Include="Converter\ArrayCastConversionTestFixture.cs" />
     <Compile Include="Converter\ArrayConversionTestFixture.cs" />
+    <Compile Include="Converter\IntegerMethodParameterTestFixture.cs" />
     <Compile Include="Converter\BaseClassReferenceTestFixture.cs" />
     <Compile Include="Converter\BinaryOperatorConversionTests.cs" />
     <Compile Include="Converter\ClassConstructorConversionTestFixture.cs" />