public static async Task<bool> IsValid (MonoDevelop.Ide.Gui.Document doc, CancellationToken cancellationToken = default(CancellationToken))
{
if (doc == null)
return false;
if (doc.Editor == null || !doc.Editor.IsSomethingSelected)
return false;
var ad = doc.AnalysisDocument;
if (ad == null)
return false;
var selectionRange = doc.Editor.SelectionRange;
try {
var selection = new CSharpSelectionValidator (await SemanticDocument.CreateAsync (ad, cancellationToken).ConfigureAwait (false), new TextSpan (selectionRange.Offset, selectionRange.Length), doc.GetOptionSet ());
var result = await selection.GetValidSelectionAsync (cancellationToken).ConfigureAwait (false);
return result.ContainsValidContext;
} catch (Exception) {
return false;
}
}
public async static Task Run (MonoDevelop.Ide.Gui.Document doc)
{
if (!doc.Editor.IsSomethingSelected)
return;
var ad = doc.AnalysisDocument;
if (ad == null)
return;
try {
var selectionRange = doc.Editor.SelectionRange;
var token = default(CancellationToken);
var selection = new CSharpSelectionValidator (await SemanticDocument.CreateAsync (ad, token).ConfigureAwait (false), new TextSpan (selectionRange.Offset, selectionRange.Length), doc.GetOptionSet ());
var result = await selection.GetValidSelectionAsync (token).ConfigureAwait (false);
if (!result.ContainsValidContext)
return;
var extractor = new CSharpMethodExtractor ((CSharpSelectionResult)result);
var extractionResult = await extractor.ExtractMethodAsync (token).ConfigureAwait (false);
var changes = await extractionResult.Document.GetTextChangesAsync (ad, token);
using (var undo = doc.Editor.OpenUndoGroup ()) {
foreach (var change in changes.OrderByDescending (ts => ts.Span.Start)) {
doc.Editor.ReplaceText (change.Span.Start, change.Span.Length, change.NewText);
}
// hack to remove the redundant private modifier.
if (doc.Editor.GetTextAt (extractionResult.MethodDeclarationNode.SpanStart, "private ".Length) == "private ") {
doc.Editor.RemoveText (extractionResult.MethodDeclarationNode.SpanStart, "private ".Length);
}
}
doc.UpdateParseDocument ();
var info = RefactoringSymbolInfo.GetSymbolInfoAsync (doc, extractionResult.InvocationNameToken.Span.Start).Result;
var sym = info.DeclaredSymbol ?? info.Symbol;
if (sym != null)
new MonoDevelop.Refactoring.Rename.RenameRefactoring ().Rename (sym);
}
catch (Exception e) {
LoggingService.LogError ("Error while extracting method", e);
}
}