bool AnalyzeTargetExpression (RefactoringOptions options, MonoDevelop.CSharp.Ast.CompilationUnit unit)
{
var data = options.GetTextEditorData ();
var target = unit.GetNodeAt (data.Caret.Line, data.Caret.Column);
if (target == null)
return false;
if (target.Parent is MemberReferenceExpression && ((MemberReferenceExpression)target.Parent).GetChildByRole (MemberReferenceExpression.Roles.Identifier) == target) {
var memberReference = (MemberReferenceExpression)target.Parent;
target = memberReference.Target;
var targetResult = options.GetResolver ().Resolve (new ExpressionResult (data.GetTextBetween (target.StartLocation.Line, target.StartLocation.Column, target.EndLocation.Line, target.EndLocation.Column)), resolvePosition);
if (targetResult.StaticResolve)
modifiers = MonoDevelop.Projects.Dom.Modifiers.Static;
declaringType = options.Dom.GetType (targetResult.ResolvedType);
methodName = memberReference.MemberName;
} else if (target is Identifier) {
declaringType = options.ResolveResult.CallingType;
methodName = data.GetTextBetween (target.StartLocation.Line, target.StartLocation.Column, target.EndLocation.Line, target.EndLocation.Column);
}
if (declaringType != null && !HasCompatibleMethod (declaringType, methodName, invocation)) {
if (declaringType.HasParts)
declaringType = declaringType.Parts.FirstOrDefault (t => t.CompilationUnit.FileName == options.Document.FileName) ?? declaringType;
var doc = ProjectDomService.GetParsedDocument (declaringType.SourceProjectDom, declaringType.CompilationUnit.FileName);
declaringType = doc.CompilationUnit.GetTypeAt (declaringType.Location) ?? declaringType;
return true;
}
return false;
}
bool AnalyzeTargetExpression (RefactoringOptions options, MonoDevelop.CSharp.Dom.CompilationUnit unit)
{
var data = options.GetTextEditorData ();
var target = unit.GetNodeAt (data.Caret.Line, data.Caret.Column);
if (target == null)
return false;
if (target.Parent is MemberReferenceExpression && ((MemberReferenceExpression)target.Parent).Identifier == target) {
var memberReference = (MemberReferenceExpression)target.Parent;
target = memberReference.Target;
var targetResult = options.GetResolver ().Resolve (new ExpressionResult (data.GetTextBetween (target.StartLocation.Line, target.StartLocation.Column, target.EndLocation.Line, target.EndLocation.Column)), resolvePosition);
if (targetResult.StaticResolve)
modifiers = MonoDevelop.Projects.Dom.Modifiers.Static;
declaringType = options.Dom.GetType (targetResult.ResolvedType);
methodName = memberReference.Identifier.Name;
} else if (target is Identifier) {
declaringType = options.ResolveResult.CallingType;
methodName = data.GetTextBetween (target.StartLocation.Line, target.StartLocation.Column, target.EndLocation.Line, target.EndLocation.Column);
}
return declaringType != null && !HasCompatibleMethod (declaringType, methodName, invocation);
}
IMethod ConstructMethodFromInvocation (RefactoringOptions options)
{
var resolver = options.GetResolver ();
var data = options.GetTextEditorData ();
DomMethod result = new DomMethod (methodName, modifiers, MethodModifier.None, DomLocation.Empty, DomRegion.Empty, returnType);
result.DeclaringType = new DomType ("GeneratedType") { ClassType = declaringType.ClassType };
int i = 1;
foreach (var curArg in invocation.Arguments) {
var argument = curArg;
DomParameter arg = new DomParameter ();
if (argument is DirectionExpression) {
var de = (DirectionExpression)argument;
arg.ParameterModifiers = de.FieldDirection == FieldDirection.Out ? ParameterModifiers.Out : ParameterModifiers.Ref;
argument = de.Expression;
}
string argExpression = data.GetTextBetween (argument.StartLocation.Line, argument.StartLocation.Column, argument.EndLocation.Line, argument.EndLocation.Column);
var resolveResult = resolver.Resolve (new ExpressionResult (argExpression), resolvePosition);
if (argument is MemberReferenceExpression) {
arg.Name = ((MemberReferenceExpression)argument).Identifier.Name;
} else if (argument is IdentifierExpression) {
arg.Name = ((IdentifierExpression)argument).Identifier;
int idx = arg.Name.LastIndexOf ('.');
if (idx >= 0)
arg.Name = arg.Name.Substring (idx + 1);
} else {
arg.Name = "par" + i++;
}
arg.Name = char.ToLower (arg.Name[0]) + arg.Name.Substring (1);
if (resolveResult != null) {
arg.ReturnType = resolveResult.ResolvedType;
} else {
arg.ReturnType = DomReturnType.Object;
}
result.Add (arg);
}
return result;
}
IReturnType GuessReturnType (RefactoringOptions options)
{
var resolver = options.GetResolver ();
var data = options.GetTextEditorData ();
DomNode node = invocation;
while (node != null) {
if (node.Parent is VariableInitializer) {
var initializer = (VariableInitializer)node.Parent;
var resolveResult = resolver.Resolve (new ExpressionResult (initializer.Name), resolvePosition);
return resolveResult.ResolvedType;
}
if (node.Parent is AssignmentExpression) {
var resolveResult = ResolveAssignment (options, (AssignmentExpression)node.Parent);
if (resolveResult != null)
return resolveResult.ResolvedType;
}
if (node.Parent is InvocationExpression) {
var parentInvocation = (InvocationExpression)node.Parent;
int idx = 0;
foreach (var arg in parentInvocation.Arguments) {
if (arg == node)
break;
idx++;
}
var resolveResult = resolver.Resolve (new ExpressionResult (data.GetTextBetween (parentInvocation.StartLocation.Line, parentInvocation.StartLocation.Column, parentInvocation.EndLocation.Line, parentInvocation.EndLocation.Column)), resolvePosition) as MethodResolveResult;
if (resolveResult != null) {
if (idx < resolveResult.MostLikelyMethod.Parameters.Count)
return resolveResult.MostLikelyMethod.Parameters[idx].ReturnType;
}
return DomReturnType.Object;
}
node = node.Parent;
}
return DomReturnType.Void;
}
ResolveResult ResolveAssignment (RefactoringOptions options, AssignmentExpression assignment)
{
var resolver = options.GetResolver ();
var data = options.GetTextEditorData ();
string expression;
if (assignment.Left is IdentifierExpression) {
expression = ((IdentifierExpression)assignment.Left).Identifier;
} else {
var left = assignment.Left;
expression = data.GetTextBetween (left.StartLocation.Line, left.StartLocation.Column, left.EndLocation.Line, left.EndLocation.Column);
}
return resolver.Resolve (new ExpressionResult (expression), resolvePosition);
}
bool Analyze (RefactoringOptions options, ExtractMethodParameters param, bool fillParameter)
{
var data = options.GetTextEditorData ();
var parser = new CSharpParser ();
var unit = parser.Parse (data);
var resolver = options.GetResolver ();
if (unit == null)
return false;
var selectionRange = data.SelectionRange;
var startOffset = selectionRange.Offset;
while (startOffset + 1 < data.Length && char.IsWhiteSpace (data.GetCharAt (startOffset + 1)))
startOffset++;
var endOffset = selectionRange.EndOffset;
while (startOffset < endOffset && endOffset - 1 > 0 && char.IsWhiteSpace (data.GetCharAt (endOffset - 1)))
endOffset--;
if (startOffset >= endOffset)
return false;
var endLocation = data.OffsetToLocation (endOffset);
var startLocation = data.OffsetToLocation (startOffset);
param.StartOffset = startOffset;
param.EndOffset = endOffset;
param.Nodes = new List<AstNode> (unit.GetNodesBetween (startLocation.Line, startLocation.Column, endLocation.Line, endLocation.Column));
string text = options.Document.Editor.GetTextBetween (startLocation, endLocation);
param.Text = RemoveIndent (text, GetIndent (data.GetTextBetween (data.GetLine (startLocation.Line).Offset, data.GetLine (endLocation.Line).EndOffset))).TrimEnd ('\n', '\r');
VariableLookupVisitor visitor = new VariableLookupVisitor (resolver, param.Location);
visitor.MemberLocation = param.DeclaringMember.Location;
visitor.CutRegion = new DomRegion (startLocation.Line, startLocation.Column, endLocation.Line, endLocation.Column);
if (fillParameter) {
unit.AcceptVisitor (visitor, null);
if (param.Nodes != null && (param.Nodes.Count == 1 && param.Nodes [0].NodeType == NodeType.Expression)) {
ResolveResult resolveResult = resolver.Resolve (new ExpressionResult ("(" + text + ")"), param.Location);
if (resolveResult != null && resolveResult.ResolvedType != null)
param.ExpressionType = resolveResult.ResolvedType;
}
foreach (VariableDescriptor varDescr in visitor.VariableList.Where (v => !v.IsDefinedInsideCutRegion && (v.UsedInCutRegion || v.IsChangedInsideCutRegion || v.UsedAfterCutRegion && v.IsDefinedInsideCutRegion))) {
param.Parameters.Add (varDescr);
}
param.Variables = new List<VariableDescriptor> (visitor.Variables.Values);
param.ReferencesMember = visitor.ReferencesMember;
param.OneChangedVariable = param.Variables.Count (p => p.IsDefinedInsideCutRegion && p.UsedAfterCutRegion) == 1;
if (param.OneChangedVariable)
param.ExpressionType = param.Variables.First (p => p.IsDefinedInsideCutRegion && p.UsedAfterCutRegion).ReturnType;
/*
foreach (VariableDescriptor varDescr in visitor.VariableList.Where (v => !v.IsDefined && param.Variables.Contains (v))) {
if (param.Parameters.Contains (varDescr))
continue;
if (startLocation <= varDescr.Location && varDescr.Location < endLocation)
continue;
param.Parameters.Add (varDescr);
}
param.ChangedVariables = new HashSet<string> (visitor.Variables.Values.Where (v => v.GetsChanged).Select (v => v.Name));
*/
// analyze the variables outside of the selected text
IMember member = param.DeclaringMember;
int bodyStartOffset = data.Document.LocationToOffset (member.BodyRegion.Start.Line, member.BodyRegion.Start.Column);
int bodyEndOffset = data.Document.LocationToOffset (member.BodyRegion.End.Line, member.BodyRegion.End.Column);
if (startOffset < bodyStartOffset || bodyEndOffset < endOffset)
return false;
text = data.Document.GetTextBetween (bodyStartOffset, startOffset) + data.Document.GetTextBetween (endOffset, bodyEndOffset);
// ICSharpCode.OldNRefactory.Ast.INode parsedNode = provider.ParseText (text);
// visitor = new VariableLookupVisitor (resolver, param.Location);
// visitor.CutRegion = new DomRegion (data.MainSelection.MinLine, data.MainSelection.MaxLine);
// visitor.MemberLocation = new Location (param.DeclaringMember.Location.Column, param.DeclaringMember.Location.Line);
// if (parsedNode != null)
// parsedNode.AcceptVisitor (visitor, null);
/*
param.VariablesOutside = new Dictionary<string, VariableDescriptor> ();
foreach (var pair in visitor.Variables) {
if (startLocation < pair.Value.Location || endLocation >= pair.Value.Location) {
param.VariablesOutside.Add (pair.Key, pair.Value);
}
}
param.OutsideVariableList = new List<VariableDescriptor> ();
foreach (var v in visitor.VariableList) {
if (startLocation < v.Location || endLocation >= v.Location)
param.OutsideVariableList.Add (v);
}
param.ChangedVariablesUsedOutside = new List<VariableDescriptor> (param.Variables.Where (v => v.GetsChanged && param.VariablesOutside.ContainsKey (v.Name)));
param.OneChangedVariable = param.Nodes.Count == 1 && param.Nodes[0] is BlockStatement;
if (param.OneChangedVariable)
param.OneChangedVariable = param.ChangedVariablesUsedOutside.Count == 1;
param.VariablesToGenerate = new List<VariableDescriptor> (param.ChangedVariablesUsedOutside.Where (v => v.IsDefined));
foreach (VariableDescriptor var in param.VariablesToGenerate) {
param.Parameters.Add (var);
}
if (param.OneChangedVariable) {
param.VariablesToDefine = new List<VariableDescriptor> (param.Parameters.Where (var => !var.InitialValueUsed));
param.VariablesToDefine.ForEach (var => param.Parameters.Remove (var));
} else {
param.VariablesToDefine = new List<VariableDescriptor> ();
}*/
}
return true;
}