//
// Reset the contents of the project to a pristine state.
//
// This method is designed to return the Project object to a blank
// configuration as if no code had been parsed. This should be done
// prior to any large-scale parsing operation to ensure that the
// data extracted from the parsed code does not contain duplicated
// or stale information.
//
private void ResetContents()
{
Files = new Dictionary <string, SourceFile>();
Scopes = new Dictionary <string, List <LexicalScope> >();
GlobalScope = new LexicalScope();
FunctionSignatures = new Dictionary <string, FunctionSignature>();
StructureDefinitions = new Dictionary <string, Structure>();
SumTypes = new Dictionary <string, SumType>();
StrongAliases = new Dictionary <string, StrongAlias>();
WeakAliases = new Dictionary <string, WeakAlias>();
var helper = new ParseSession.ErrorListHelper();
var ErrorProvider = new ErrorListProvider(helper);
ErrorProvider.ProviderName = "Epoch Language";
ErrorProvider.ProviderGuid = new Guid(VsPackage.PackageGuid);
ErrorProvider.Tasks.Clear(); // TODO - this is probably too brute force
}
//
// Plumbing - an event handler for when a Task is double-clicked, i.e.
// to navigate to the code causing a parser error.
//
internal async void NavigationHandler(object sender, EventArgs args)
{
var task = sender as Microsoft.VisualStudio.Shell.Task;
if (string.IsNullOrEmpty(task.Document))
{
return;
}
await ThreadHelper.JoinableTaskFactory.SwitchToMainThreadAsync();
var serviceProvider = new ParseSession.ErrorListHelper();
var openDoc = serviceProvider.GetService(typeof(IVsUIShellOpenDocument)) as IVsUIShellOpenDocument;
if (openDoc == null)
{
return;
}
IVsWindowFrame frame;
Microsoft.VisualStudio.OLE.Interop.IServiceProvider sp;
IVsUIHierarchy hier;
uint itemid;
Guid logicalView = VSConstants.LOGVIEWID_Code;
if (ErrorHandler.Failed(openDoc.OpenDocumentViaProject(task.Document, ref logicalView, out sp, out hier, out itemid, out frame)) || frame == null)
{
return;
}
object docData;
frame.GetProperty((int)__VSFPROPID.VSFPROPID_DocData, out docData);
VsTextBuffer buffer = docData as VsTextBuffer;
if (buffer == null)
{
IVsTextBufferProvider bufferProvider = docData as IVsTextBufferProvider;
if (bufferProvider != null)
{
IVsTextLines lines;
ErrorHandler.ThrowOnFailure(bufferProvider.GetTextBuffer(out lines));
buffer = lines as VsTextBuffer;
if (buffer == null)
{
return;
}
}
}
IVsTextManager mgr = serviceProvider.GetService(typeof(VsTextManagerClass)) as IVsTextManager;
if (mgr == null)
{
return;
}
// This whole mess could arguably be a lot simpler as a call to ErrorProvider.Navigate().
// Unfortunately that API assumes 1-based column/line indices, whereas our task (in order
// to display correctly in the task list) assumes 0-based. This can be worked around with
// a trivial addition/substraction, but the kicker is that the column is not used by that
// particular API. Therefore to preserve the column we do all this crazy stuff instead.
mgr.NavigateToLineAndColumn(buffer, ref logicalView, task.Line, task.Column, task.Line, task.Column);
}
