private bool TrySetContext(
bool isImmediateWindow)
{
// Get the workspace, and from there, the solution and document containing this buffer.
// If there's an ExternalSource, we won't get a document. Give up in that case.
Document document = ContextBuffer.CurrentSnapshot.GetOpenDocumentInCurrentContextWithChanges();
if (document == null)
{
_projectionBuffer = null;
_debuggerTextView = null;
_workspace = null;
_immediateWindowContext = null;
return(false);
}
var solution = document.Project.Solution;
// Get the appropriate ITrackingSpan for the window the user is typing in
var viewSnapshot = _textView.TextSnapshot;
_immediateWindowContext = null;
var debuggerMappedSpan = isImmediateWindow
? CreateImmediateWindowProjectionMapping(document, out _immediateWindowContext)
: viewSnapshot.CreateFullTrackingSpan(SpanTrackingMode.EdgeInclusive);
// Wrap the original ContextBuffer in a projection buffer that we can make read-only
this.ContextBuffer = this.ProjectionBufferFactoryService.CreateProjectionBuffer(null,
new object[] { this.ContextBuffer.CurrentSnapshot.CreateFullTrackingSpan(SpanTrackingMode.EdgeInclusive) }, ProjectionBufferOptions.None, _contentType);
// Make projection readonly so we can't edit it by mistake.
using (var regionEdit = this.ContextBuffer.CreateReadOnlyRegionEdit())
{
regionEdit.CreateReadOnlyRegion(new Span(0, this.ContextBuffer.CurrentSnapshot.Length), SpanTrackingMode.EdgeInclusive, EdgeInsertionMode.Deny);
regionEdit.Apply();
}
// Adjust the context point to ensure that the right information is in scope.
// For example, we may need to move the point to the end of the last statement in a method body
// in order to be able to access all local variables.
var contextPoint = this.ContextBuffer.CurrentSnapshot.GetLineFromLineNumber(CurrentStatementSpan.iEndLine).Start + CurrentStatementSpan.iEndIndex;
var adjustedContextPoint = GetAdjustedContextPoint(contextPoint, document);
// Get the previous span/text. We might have to insert another newline or something.
var previousStatementSpan = GetPreviousStatementBufferAndSpan(adjustedContextPoint, document);
// Build the tracking span that includes the rest of the file
var restOfFileSpan = ContextBuffer.CurrentSnapshot.CreateTrackingSpanFromIndexToEnd(adjustedContextPoint, SpanTrackingMode.EdgePositive);
// Put it all into a projection buffer
_projectionBuffer = this.ProjectionBufferFactoryService.CreateProjectionBuffer(null,
new object[] { previousStatementSpan, debuggerMappedSpan, this.StatementTerminator, restOfFileSpan }, ProjectionBufferOptions.None, _contentType);
// Fork the solution using this new primary buffer for the document and all of its linked documents.
var forkedSolution = solution.WithDocumentText(document.Id, _projectionBuffer.CurrentSnapshot.AsText(), PreservationMode.PreserveIdentity);
foreach (var link in document.GetLinkedDocumentIds())
{
forkedSolution = forkedSolution.WithDocumentText(link, _projectionBuffer.CurrentSnapshot.AsText(), PreservationMode.PreserveIdentity);
}
// Put it into a new workspace, and open it and its related documents
// with the projection buffer as the text.
_workspace = new DebuggerIntelliSenseWorkspace(forkedSolution);
_workspace.OpenDocument(document.Id, _projectionBuffer.AsTextContainer());
foreach (var link in document.GetLinkedDocumentIds())
{
_workspace.OpenDocument(link, _projectionBuffer.AsTextContainer());
}
// Start getting the compilation so the PartialSolution will be ready when the user starts typing in the window
document.Project.GetCompilationAsync(System.Threading.CancellationToken.None);
_textView.TextBuffer.ChangeContentType(_contentType, null);
var bufferGraph = _bufferGraphFactoryService.CreateBufferGraph(_projectionBuffer);
_debuggerTextView = new DebuggerTextView(_textView, bufferGraph, _debuggerTextLines, InImmediateWindow);
return(true);
}
private bool TrySetContext(
bool isImmediateWindow)
{
// Get the workspace, and from there, the solution and document containing this buffer.
// If there's an ExternalSource, we won't get a document. Give up in that case.
Document document = ContextBuffer.CurrentSnapshot.GetOpenDocumentInCurrentContextWithChanges();
if (document == null)
{
_projectionBuffer = null;
_debuggerTextView = null;
_workspace = null;
_immediateWindowContext = null;
return false;
}
var solution = document.Project.Solution;
// Get the appropriate ITrackingSpan for the window the user is typing in
var viewSnapshot = _textView.TextSnapshot;
_immediateWindowContext = null;
var debuggerMappedSpan = isImmediateWindow
? CreateImmediateWindowProjectionMapping(document, out _immediateWindowContext)
: viewSnapshot.CreateFullTrackingSpan(SpanTrackingMode.EdgeInclusive);
// Wrap the original ContextBuffer in a projection buffer that we can make read-only
this.ContextBuffer = this.ProjectionBufferFactoryService.CreateProjectionBuffer(null,
new object[] { this.ContextBuffer.CurrentSnapshot.CreateFullTrackingSpan(SpanTrackingMode.EdgeInclusive) }, ProjectionBufferOptions.None, _contentType);
// Make projection readonly so we can't edit it by mistake.
using (var regionEdit = this.ContextBuffer.CreateReadOnlyRegionEdit())
{
regionEdit.CreateReadOnlyRegion(new Span(0, this.ContextBuffer.CurrentSnapshot.Length), SpanTrackingMode.EdgeInclusive, EdgeInsertionMode.Deny);
regionEdit.Apply();
}
// Adjust the context point to ensure that the right information is in scope.
// For example, we may need to move the point to the end of the last statement in a method body
// in order to be able to access all local variables.
var contextPoint = this.ContextBuffer.CurrentSnapshot.GetLineFromLineNumber(CurrentStatementSpan.iEndLine).Start + CurrentStatementSpan.iEndIndex;
var adjustedContextPoint = GetAdjustedContextPoint(contextPoint, document);
// Get the previous span/text. We might have to insert another newline or something.
var previousStatementSpan = GetPreviousStatementBufferAndSpan(adjustedContextPoint, document);
// Build the tracking span that includes the rest of the file
var restOfFileSpan = ContextBuffer.CurrentSnapshot.CreateTrackingSpanFromIndexToEnd(adjustedContextPoint, SpanTrackingMode.EdgePositive);
// Put it all into a projection buffer
_projectionBuffer = this.ProjectionBufferFactoryService.CreateProjectionBuffer(null,
new object[] { previousStatementSpan, debuggerMappedSpan, this.StatementTerminator, restOfFileSpan }, ProjectionBufferOptions.None, _contentType);
// fork the solution using this new primary buffer
var forkedSolution = solution.WithDocumentText(document.Id, _projectionBuffer.CurrentSnapshot.AsText(), PreservationMode.PreserveIdentity);
// put it into a new workspace
_workspace = new DebuggerIntelliSenseWorkspace(forkedSolution);
_workspace.OpenDocument(document.Id, _projectionBuffer.AsTextContainer());
// Start getting the compilation so the PartialSolution will be ready when the user starts typing in the window
_workspace.CurrentSolution.GetCompilationAsync(document.Project.Id, System.Threading.CancellationToken.None);
_textView.TextBuffer.ChangeContentType(_contentType, null);
var bufferGraph = _bufferGraphFactoryService.CreateBufferGraph(_projectionBuffer);
_debuggerTextView = new DebuggerTextView(_textView, bufferGraph, this.InImmediateWindow);
return true;
}