public override List<Change> PerformChanges (RefactoringOptions options, object prop)
{
List<Change> result = new List<Change> ();
ExtractMethodParameters param = (ExtractMethodParameters)prop;
TextEditorData data = options.GetTextEditorData ();
INRefactoryASTProvider provider = options.GetASTProvider ();
IResolver resolver = options.GetResolver ();
ICSharpCode.NRefactory.Ast.INode node = Analyze (options, param, false);
if (param.VariablesToGenerate.Count > 0) {
TextReplaceChange varGen = new TextReplaceChange ();
varGen.Description = GettextCatalog.GetString ("Generate some temporary variables");
varGen.FileName = options.Document.FileName;
LineSegment line = data.Document.GetLine (Math.Max (0, data.Document.OffsetToLineNumber (data.SelectionRange.Offset) - 1));
varGen.Offset = line.Offset + line.EditableLength;
varGen.InsertedText = Environment.NewLine + options.GetWhitespaces (line.Offset);
foreach (VariableDescriptor var in param.VariablesToGenerate) {
TypeReference tr = options.ShortenTypeName (var.ReturnType).ConvertToTypeReference ();
varGen.InsertedText += provider.OutputNode (options.Dom, new LocalVariableDeclaration (new VariableDeclaration (var.Name, null, tr))).Trim ();
}
result.Add (varGen);
}
InvocationExpression invocation = new InvocationExpression (new IdentifierExpression (param.Name));
foreach (VariableDescriptor var in param.Parameters) {
if (!param.OneChangedVariable && param.ChangedVariables.Contains (var.Name)) {
FieldDirection fieldDirection = FieldDirection.Ref;
VariableDescriptor outsideVar = null;
if (param.VariablesOutside.TryGetValue (var.Name, out outsideVar) && (var.GetsAssigned || param.VariablesToGenerate.Where (v => v.Name == var.Name).Any ())) {
if (!outsideVar.GetsAssigned)
fieldDirection = FieldDirection.Out;
}
invocation.Arguments.Add (new DirectionExpression (fieldDirection, new IdentifierExpression (var.Name)));
} else {
invocation.Arguments.Add (new IdentifierExpression (var.Name));
}
}
// string mimeType = DesktopService.GetMimeTypeForUri (options.Document.FileName);
TypeReference returnType = new TypeReference ("System.Void", true);
ICSharpCode.NRefactory.Ast.INode outputNode;
if (param.OneChangedVariable) {
string name = param.ChangedVariables.First ();
returnType = options.ShortenTypeName (param.Variables.Find (v => v.Name == name).ReturnType).ConvertToTypeReference ();
if (param.OutsideVariableList.Any (v => v.Name == name && !v.IsDefined)) {
LocalVariableDeclaration varDecl = new LocalVariableDeclaration (returnType);
varDecl.Variables.Add (new VariableDeclaration (name, invocation));
outputNode = varDecl;
} else {
outputNode = new ExpressionStatement (new AssignmentExpression (new IdentifierExpression (name), ICSharpCode.NRefactory.Ast.AssignmentOperatorType.Assign, invocation));
}
} else {
outputNode = node is BlockStatement ? (ICSharpCode.NRefactory.Ast.INode)new ExpressionStatement (invocation) : invocation;
}
TextReplaceChange replacement = new TextReplaceChange ();
replacement.Description = string.Format (GettextCatalog.GetString ("Substitute selected statement(s) with call to {0}"), param.Name);
replacement.FileName = options.Document.FileName;
replacement.Offset = options.Document.Editor.SelectionRange.Offset;
replacement.RemovedChars = options.Document.Editor.SelectionRange.Length;
replacement.MoveCaretToReplace = true;
LineSegment line1 = data.Document.GetLineByOffset (options.Document.Editor.SelectionRange.EndOffset);
if (options.Document.Editor.SelectionRange.EndOffset == line1.Offset) {
if (line1.Offset > 0) {
LineSegment line2 = data.Document.GetLineByOffset (line1.Offset - 1);
replacement.RemovedChars -= line2.DelimiterLength;
}
}
replacement.InsertedText = options.GetWhitespaces (options.Document.Editor.SelectionRange.Offset) + provider.OutputNode (options.Dom, outputNode).Trim ();
result.Add (replacement);
TextReplaceChange insertNewMethod = new TextReplaceChange ();
insertNewMethod.FileName = options.Document.FileName;
insertNewMethod.Description = string.Format (GettextCatalog.GetString ("Create new method {0} from selected statement(s)"), param.Name);
insertNewMethod.RemovedChars = param.InsertionPoint.LineBefore == NewLineInsertion.Eol ? 0 : param.InsertionPoint.Location.Column;
insertNewMethod.Offset = data.Document.LocationToOffset (param.InsertionPoint.Location) - insertNewMethod.RemovedChars;
ExtractMethodAstTransformer transformer = new ExtractMethodAstTransformer (param.VariablesToGenerate);
node.AcceptVisitor (transformer, null);
if (!param.OneChangedVariable && node is Expression) {
ResolveResult resolveResult = resolver.Resolve (new ExpressionResult ("(" + provider.OutputNode (options.Dom, node) + ")"), new DomLocation (options.Document.Editor.Caret.Line, options.Document.Editor.Caret.Column));
if (resolveResult.ResolvedType != null)
returnType = options.ShortenTypeName (resolveResult.ResolvedType).ConvertToTypeReference ();
}
MethodDeclaration methodDecl = new MethodDeclaration ();
methodDecl.Name = param.Name;
methodDecl.Modifier = param.Modifiers;
methodDecl.TypeReference = returnType;
if (!param.ReferencesMember)
methodDecl.Modifier |= ICSharpCode.NRefactory.Ast.Modifiers.Static;
if (node is BlockStatement) {
methodDecl.Body = new BlockStatement ();
methodDecl.Body.AddChild (new EmptyStatement ());
if (param.OneChangedVariable)
methodDecl.Body.AddChild (new ReturnStatement (new IdentifierExpression (param.ChangedVariables.First ())));
} else if (node is Expression) {
methodDecl.Body = new BlockStatement ();
methodDecl.Body.AddChild (new ReturnStatement (node as Expression));
}
foreach (VariableDescriptor var in param.VariablesToDefine) {
BlockStatement block = methodDecl.Body;
LocalVariableDeclaration varDecl = new LocalVariableDeclaration (options.ShortenTypeName (var.ReturnType).ConvertToTypeReference ());
varDecl.Variables.Add (new VariableDeclaration (var.Name));
block.Children.Insert (0, varDecl);
}
foreach (VariableDescriptor var in param.Parameters) {
TypeReference typeReference = options.ShortenTypeName (var.ReturnType).ConvertToTypeReference ();
ParameterDeclarationExpression pde = new ParameterDeclarationExpression (typeReference, var.Name);
if (!param.OneChangedVariable) {
if (param.ChangedVariables.Contains (var.Name))
pde.ParamModifier = ICSharpCode.NRefactory.Ast.ParameterModifiers.Ref;
if (param.VariablesToGenerate.Where (v => v.Name == var.Name).Any ()) {
pde.ParamModifier = ICSharpCode.NRefactory.Ast.ParameterModifiers.Out;
}
VariableDescriptor outsideVar = null;
if (var.GetsAssigned && param.VariablesOutside.TryGetValue (var.Name, out outsideVar)) {
if (!outsideVar.GetsAssigned)
pde.ParamModifier = ICSharpCode.NRefactory.Ast.ParameterModifiers.Out;
}
}
methodDecl.Parameters.Add (pde);
}
string indent = options.GetIndent (param.DeclaringMember);
StringBuilder methodText = new StringBuilder ();
switch (param.InsertionPoint.LineBefore) {
case NewLineInsertion.Eol:
methodText.AppendLine ();
break;
case NewLineInsertion.BlankLine:
methodText.Append (indent);
methodText.AppendLine ();
break;
}
if (param.GenerateComment) {
methodText.Append (indent);
methodText.AppendLine ("/// <summary>");
methodText.Append (indent);
methodText.AppendLine ("/// TODO: write a comment.");
methodText.Append (indent);
methodText.AppendLine ("/// </summary>");
Ambience ambience = AmbienceService.GetAmbienceForFile (options.Document.FileName);
foreach (ParameterDeclarationExpression pde in methodDecl.Parameters) {
methodText.Append (indent);
methodText.Append ("/// <param name=\"");
methodText.Append (pde.ParameterName);
methodText.Append ("\"> A ");
methodText.Append (ambience.GetString (pde.TypeReference.ConvertToReturnType (), OutputFlags.IncludeGenerics | OutputFlags.UseFullName));
methodText.Append (" </param>");
methodText.AppendLine ();
}
if (methodDecl.TypeReference.Type != "System.Void") {
methodText.Append (indent);
methodText.AppendLine ("/// <returns>");
methodText.Append (indent);
methodText.Append ("/// A ");
methodText.AppendLine (ambience.GetString (methodDecl.TypeReference.ConvertToReturnType (), OutputFlags.IncludeGenerics | OutputFlags.UseFullName));
methodText.Append (indent);
methodText.AppendLine ("/// </returns>");
}
}
methodText.Append (indent);
if (node is BlockStatement) {
string text = provider.OutputNode (options.Dom, methodDecl, indent).Trim ();
int emptyStatementMarker = text.LastIndexOf (';');
if (param.OneChangedVariable)
emptyStatementMarker = text.LastIndexOf (';', emptyStatementMarker - 1);
StringBuilder sb = new StringBuilder ();
sb.Append (text.Substring (0, emptyStatementMarker));
sb.Append (AddIndent (param.Text, indent + "\t"));
sb.Append (text.Substring (emptyStatementMarker + 1));
methodText.Append (sb.ToString ());
} else {
methodText.Append (provider.OutputNode (options.Dom, methodDecl, options.GetIndent (param.DeclaringMember)).Trim ());
}
switch (param.InsertionPoint.LineAfter) {
case NewLineInsertion.Eol:
methodText.AppendLine ();
break;
case NewLineInsertion.BlankLine:
methodText.AppendLine ();
methodText.AppendLine ();
methodText.Append (indent);
break;
}
insertNewMethod.InsertedText = methodText.ToString ();
result.Add (insertNewMethod);
return result;
}
public override List <Change> PerformChanges(RefactoringOptions options, object prop)
{
List <Change> result = new List <Change> ();
ExtractMethodParameters param = (ExtractMethodParameters)prop;
TextEditorData data = options.GetTextEditorData();
INRefactoryASTProvider provider = options.GetASTProvider();
IResolver resolver = options.GetResolver();
ICSharpCode.NRefactory.Ast.INode node = Analyze(options, param, false);
if (param.VariablesToGenerate.Count > 0)
{
TextReplaceChange varGen = new TextReplaceChange();
varGen.Description = GettextCatalog.GetString("Generate some temporary variables");
varGen.FileName = options.Document.FileName;
LineSegment line = data.Document.GetLine(Math.Max(0, data.Document.OffsetToLineNumber(data.SelectionRange.Offset) - 1));
varGen.Offset = line.Offset + line.EditableLength;
varGen.InsertedText = Environment.NewLine + options.GetWhitespaces(line.Offset);
foreach (VariableDescriptor var in param.VariablesToGenerate)
{
TypeReference tr = options.ShortenTypeName(var.ReturnType).ConvertToTypeReference();
varGen.InsertedText += provider.OutputNode(options.Dom, new LocalVariableDeclaration(new VariableDeclaration(var.Name, null, tr))).Trim();
}
result.Add(varGen);
}
InvocationExpression invocation = new InvocationExpression(new IdentifierExpression(param.Name));
foreach (VariableDescriptor var in param.Parameters)
{
if (!param.OneChangedVariable && param.ChangedVariables.Contains(var.Name))
{
FieldDirection fieldDirection = FieldDirection.Ref;
VariableDescriptor outsideVar = null;
if (param.VariablesOutside.TryGetValue(var.Name, out outsideVar) && (var.GetsAssigned || param.VariablesToGenerate.Where(v => v.Name == var.Name).Any()))
{
if (!outsideVar.GetsAssigned)
{
fieldDirection = FieldDirection.Out;
}
}
invocation.Arguments.Add(new DirectionExpression(fieldDirection, new IdentifierExpression(var.Name)));
}
else
{
invocation.Arguments.Add(new IdentifierExpression(var.Name));
}
}
// string mimeType = DesktopService.GetMimeTypeForUri (options.Document.FileName);
TypeReference returnType = new TypeReference("System.Void", true);
ICSharpCode.NRefactory.Ast.INode outputNode;
if (param.OneChangedVariable)
{
string name = param.ChangedVariables.First();
returnType = options.ShortenTypeName(param.Variables.Find(v => v.Name == name).ReturnType).ConvertToTypeReference();
if (param.OutsideVariableList.Any(v => v.Name == name && !v.IsDefined))
{
LocalVariableDeclaration varDecl = new LocalVariableDeclaration(returnType);
varDecl.Variables.Add(new VariableDeclaration(name, invocation));
outputNode = varDecl;
}
else
{
outputNode = new ExpressionStatement(new AssignmentExpression(new IdentifierExpression(name), ICSharpCode.NRefactory.Ast.AssignmentOperatorType.Assign, invocation));
}
}
else
{
outputNode = node is BlockStatement ? (ICSharpCode.NRefactory.Ast.INode) new ExpressionStatement(invocation) : invocation;
}
TextReplaceChange replacement = new TextReplaceChange();
replacement.Description = string.Format(GettextCatalog.GetString("Substitute selected statement(s) with call to {0}"), param.Name);
replacement.FileName = options.Document.FileName;
replacement.Offset = options.Document.TextEditor.SelectionStartPosition;
replacement.RemovedChars = options.Document.TextEditor.SelectionEndPosition - options.Document.TextEditor.SelectionStartPosition;
replacement.MoveCaretToReplace = true;
LineSegment line1 = data.Document.GetLineByOffset(options.Document.TextEditor.SelectionEndPosition);
if (options.Document.TextEditor.SelectionEndPosition == line1.Offset)
{
if (line1.Offset > 0)
{
LineSegment line2 = data.Document.GetLineByOffset(line1.Offset - 1);
replacement.RemovedChars -= line2.DelimiterLength;
}
}
replacement.InsertedText = options.GetWhitespaces(options.Document.TextEditor.SelectionStartPosition) + provider.OutputNode(options.Dom, outputNode).Trim();
result.Add(replacement);
TextReplaceChange insertNewMethod = new TextReplaceChange();
insertNewMethod.FileName = options.Document.FileName;
insertNewMethod.Description = string.Format(GettextCatalog.GetString("Create new method {0} from selected statement(s)"), param.Name);
insertNewMethod.RemovedChars = param.InsertionPoint.LineBefore == NewLineInsertion.Eol ? 0 : param.InsertionPoint.Location.Column;
insertNewMethod.Offset = data.Document.LocationToOffset(param.InsertionPoint.Location) - insertNewMethod.RemovedChars;
ExtractMethodAstTransformer transformer = new ExtractMethodAstTransformer(param.VariablesToGenerate);
node.AcceptVisitor(transformer, null);
if (!param.OneChangedVariable && node is Expression)
{
ResolveResult resolveResult = resolver.Resolve(new ExpressionResult("(" + provider.OutputNode(options.Dom, node) + ")"), new DomLocation(options.Document.TextEditor.CursorLine, options.Document.TextEditor.CursorColumn));
if (resolveResult.ResolvedType != null)
{
returnType = options.ShortenTypeName(resolveResult.ResolvedType).ConvertToTypeReference();
}
}
MethodDeclaration methodDecl = new MethodDeclaration();
methodDecl.Name = param.Name;
methodDecl.Modifier = param.Modifiers;
methodDecl.TypeReference = returnType;
if (!param.ReferencesMember)
{
methodDecl.Modifier |= ICSharpCode.NRefactory.Ast.Modifiers.Static;
}
if (node is BlockStatement)
{
methodDecl.Body = new BlockStatement();
methodDecl.Body.AddChild(new EmptyStatement());
if (param.OneChangedVariable)
{
methodDecl.Body.AddChild(new ReturnStatement(new IdentifierExpression(param.ChangedVariables.First())));
}
}
else if (node is Expression)
{
methodDecl.Body = new BlockStatement();
methodDecl.Body.AddChild(new ReturnStatement(node as Expression));
}
foreach (VariableDescriptor var in param.VariablesToDefine)
{
BlockStatement block = methodDecl.Body;
LocalVariableDeclaration varDecl = new LocalVariableDeclaration(options.ShortenTypeName(var.ReturnType).ConvertToTypeReference());
varDecl.Variables.Add(new VariableDeclaration(var.Name));
block.Children.Insert(0, varDecl);
}
foreach (VariableDescriptor var in param.Parameters)
{
TypeReference typeReference = options.ShortenTypeName(var.ReturnType).ConvertToTypeReference();
ParameterDeclarationExpression pde = new ParameterDeclarationExpression(typeReference, var.Name);
if (!param.OneChangedVariable)
{
if (param.ChangedVariables.Contains(var.Name))
{
pde.ParamModifier = ICSharpCode.NRefactory.Ast.ParameterModifiers.Ref;
}
if (param.VariablesToGenerate.Where(v => v.Name == var.Name).Any())
{
pde.ParamModifier = ICSharpCode.NRefactory.Ast.ParameterModifiers.Out;
}
VariableDescriptor outsideVar = null;
if (var.GetsAssigned && param.VariablesOutside.TryGetValue(var.Name, out outsideVar))
{
if (!outsideVar.GetsAssigned)
{
pde.ParamModifier = ICSharpCode.NRefactory.Ast.ParameterModifiers.Out;
}
}
}
methodDecl.Parameters.Add(pde);
}
string indent = options.GetIndent(param.DeclaringMember);
StringBuilder methodText = new StringBuilder();
switch (param.InsertionPoint.LineBefore)
{
case NewLineInsertion.Eol:
methodText.AppendLine();
break;
case NewLineInsertion.BlankLine:
methodText.Append(indent);
methodText.AppendLine();
break;
}
if (param.GenerateComment)
{
methodText.Append(indent);
methodText.AppendLine("/// <summary>");
methodText.Append(indent);
methodText.AppendLine("/// TODO: write a comment.");
methodText.Append(indent);
methodText.AppendLine("/// </summary>");
Ambience ambience = AmbienceService.GetAmbienceForFile(options.Document.FileName);
foreach (ParameterDeclarationExpression pde in methodDecl.Parameters)
{
methodText.Append(indent);
methodText.Append("/// <param name=\"");
methodText.Append(pde.ParameterName);
methodText.Append("\"> A ");
methodText.Append(ambience.GetString(pde.TypeReference.ConvertToReturnType(), OutputFlags.IncludeGenerics | OutputFlags.UseFullName));
methodText.Append(" </param>");
methodText.AppendLine();
}
if (methodDecl.TypeReference.Type != "System.Void")
{
methodText.Append(indent);
methodText.AppendLine("/// <returns>");
methodText.Append(indent);
methodText.Append("/// A ");
methodText.AppendLine(ambience.GetString(methodDecl.TypeReference.ConvertToReturnType(), OutputFlags.IncludeGenerics | OutputFlags.UseFullName));
methodText.Append(indent);
methodText.AppendLine("/// </returns>");
}
}
methodText.Append(indent);
if (node is BlockStatement)
{
string text = provider.OutputNode(options.Dom, methodDecl, indent).Trim();
int emptyStatementMarker = text.LastIndexOf(';');
if (param.OneChangedVariable)
{
emptyStatementMarker = text.LastIndexOf(';', emptyStatementMarker - 1);
}
StringBuilder sb = new StringBuilder();
sb.Append(text.Substring(0, emptyStatementMarker));
sb.Append(AddIndent(param.Text, indent + "\t"));
sb.Append(text.Substring(emptyStatementMarker + 1));
methodText.Append(sb.ToString());
}
else
{
methodText.Append(provider.OutputNode(options.Dom, methodDecl, options.GetIndent(param.DeclaringMember)).Trim());
}
switch (param.InsertionPoint.LineAfter)
{
case NewLineInsertion.Eol:
methodText.AppendLine();
break;
case NewLineInsertion.BlankLine:
methodText.AppendLine();
methodText.AppendLine();
methodText.Append(indent);
break;
}
insertNewMethod.InsertedText = methodText.ToString();
result.Add(insertNewMethod);
return(result);
}
