public Model(
DisconnectedBufferGraph disconnectedBufferGraph,
TextSpan textSpan,
ISignatureHelpProvider provider,
IList<SignatureHelpItem> items,
SignatureHelpItem selectedItem,
int argumentIndex,
int argumentCount,
string argumentName,
int? selectedParameter)
{
Contract.ThrowIfNull(selectedItem);
Contract.ThrowIfFalse(items.Count != 0, "Must have at least one item.");
Contract.ThrowIfFalse(items.Contains(selectedItem), "Selected item must be in list of items.");
_disconnectedBufferGraph = disconnectedBufferGraph;
this.TextSpan = textSpan;
this.Items = items;
this.Provider = provider;
this.SelectedItem = selectedItem;
this.ArgumentIndex = argumentIndex;
this.ArgumentCount = argumentCount;
this.ArgumentName = argumentName;
this.SelectedParameter = selectedParameter;
}
public void ComputeModel(
ImmutableArray <ISignatureHelpProvider> providers,
SignatureHelpTriggerInfo triggerInfo
)
{
AssertIsForeground();
var caretPosition =
Controller.TextView.GetCaretPoint(Controller.SubjectBuffer).Value;
var disconnectedBufferGraph = new DisconnectedBufferGraph(
Controller.SubjectBuffer,
Controller.TextView.TextBuffer
);
// If we've already computed a model, then just use that. Otherwise, actually
// compute a new model and send that along.
Computation.ChainTaskAndNotifyControllerWhenFinished(
(model, cancellationToken) =>
ComputeModelInBackgroundAsync(
model,
providers,
caretPosition,
disconnectedBufferGraph,
triggerInfo,
cancellationToken
)
);
}
private Model(
DisconnectedBufferGraph disconnectedBufferGraph,
IList <CompletionItem> totalItems,
IList <CompletionItem> filteredItems,
CompletionItem selectedItem,
bool isHardSelection,
bool isUnique,
bool useSuggestionCompletionMode,
CompletionItem builder,
CompletionItem defaultBuilder,
CompletionTriggerInfo triggerInfo,
ITrackingPoint commitSpanEndPoint,
bool dismissIfEmpty)
{
Contract.ThrowIfNull(selectedItem);
Contract.ThrowIfFalse(totalItems.Count != 0, "Must have at least one item.");
Contract.ThrowIfFalse(filteredItems.Count != 0, "Must have at least one filtered item.");
Contract.ThrowIfFalse(filteredItems.Contains(selectedItem) || defaultBuilder == selectedItem, "Selected item must be in filtered items.");
_disconnectedBufferGraph = disconnectedBufferGraph;
this.TotalItems = totalItems;
this.FilteredItems = filteredItems;
this.SelectedItem = selectedItem;
this.IsHardSelection = isHardSelection;
this.IsUnique = isUnique;
this.UseSuggestionCompletionMode = useSuggestionCompletionMode;
this.Builder = builder;
this.DefaultBuilder = defaultBuilder;
this.TriggerInfo = triggerInfo;
this.CommitTrackingSpanEndPoint = commitSpanEndPoint;
this.DismissIfEmpty = dismissIfEmpty;
}
public Model(
DisconnectedBufferGraph disconnectedBufferGraph,
TextSpan textSpan,
ISignatureHelpProvider provider,
IList <SignatureHelpItem> items,
SignatureHelpItem selectedItem,
int argumentIndex,
int argumentCount,
string argumentName,
int?selectedParameter)
{
Contract.ThrowIfNull(selectedItem);
Contract.ThrowIfFalse(items.Count != 0, "Must have at least one item.");
Contract.ThrowIfFalse(items.Contains(selectedItem), "Selected item must be in list of items.");
_disconnectedBufferGraph = disconnectedBufferGraph;
this.TextSpan = textSpan;
this.Items = items;
this.Provider = provider;
this.SelectedItem = selectedItem;
this.ArgumentIndex = argumentIndex;
this.ArgumentCount = argumentCount;
this.ArgumentName = argumentName;
this.SelectedParameter = selectedParameter;
}
private Model(
DisconnectedBufferGraph disconnectedBufferGraph,
IList <CompletionItem> totalItems,
IList <CompletionItem> filteredItems,
CompletionItem selectedItem,
ImmutableArray <CompletionItemFilter> completionItemFilters,
ImmutableDictionary <CompletionItemFilter, bool> filterState,
IReadOnlyDictionary <CompletionItem, string> completionItemToFilterText,
bool isHardSelection,
bool isUnique,
bool useSuggestionCompletionMode,
CompletionItem builder,
CompletionItem defaultBuilder,
CompletionTriggerInfo triggerInfo,
ITrackingPoint commitSpanEndPoint,
bool dismissIfEmpty)
{
Contract.ThrowIfFalse(totalItems.Count != 0, "Must have at least one item.");
_disconnectedBufferGraph = disconnectedBufferGraph;
this.TotalItems = totalItems;
this.FilteredItems = filteredItems;
this.FilterState = filterState;
this.SelectedItem = selectedItem;
this.CompletionItemFilters = completionItemFilters;
this.CompletionItemToFilterText = completionItemToFilterText;
this.IsHardSelection = isHardSelection;
this.IsUnique = isUnique;
this.UseSuggestionCompletionMode = useSuggestionCompletionMode;
this.Builder = builder;
this.DefaultBuilder = defaultBuilder;
this.TriggerInfo = triggerInfo;
this.CommitTrackingSpanEndPoint = commitSpanEndPoint;
this.DismissIfEmpty = dismissIfEmpty;
}
private Model(
DisconnectedBufferGraph disconnectedBufferGraph,
IList<CompletionItem> totalItems,
IList<CompletionItem> filteredItems,
CompletionItem selectedItem,
bool isHardSelection,
bool isUnique,
bool useSuggestionCompletionMode,
CompletionItem builder,
CompletionItem defaultBuilder,
CompletionTriggerInfo triggerInfo,
ITrackingPoint commitSpanEndPoint,
bool dismissIfEmpty)
{
Contract.ThrowIfNull(selectedItem);
Contract.ThrowIfFalse(totalItems.Count != 0, "Must have at least one item.");
Contract.ThrowIfFalse(filteredItems.Count != 0, "Must have at least one filtered item.");
Contract.ThrowIfFalse(filteredItems.Contains(selectedItem) || defaultBuilder == selectedItem, "Selected item must be in filtered items.");
_disconnectedBufferGraph = disconnectedBufferGraph;
this.TotalItems = totalItems;
this.FilteredItems = filteredItems;
this.SelectedItem = selectedItem;
this.IsHardSelection = isHardSelection;
this.IsUnique = isUnique;
this.UseSuggestionCompletionMode = useSuggestionCompletionMode;
this.Builder = builder;
this.DefaultBuilder = defaultBuilder;
this.TriggerInfo = triggerInfo;
this.CommitTrackingSpanEndPoint = commitSpanEndPoint;
this.DismissIfEmpty = dismissIfEmpty;
}
public void ComputeModel(
ImmutableArray <ISignatureHelpProvider> providers,
SignatureHelpTriggerInfo triggerInfo)
{
AssertIsForeground();
var caretPosition = Controller.TextView.GetCaretPoint(Controller.SubjectBuffer).Value;
var disconnectedBufferGraph = new DisconnectedBufferGraph(Controller.SubjectBuffer, Controller.TextView.TextBuffer);
// If this is a retrigger command then update the retrigger-id. This way
// any in-flight retrigger-updates will immediately bail out.
if (IsNonTypeCharRetrigger(triggerInfo))
{
Interlocked.Increment(ref _retriggerId);
}
var localId = _retriggerId;
// If we've already computed a model, then just use that. Otherwise, actually
// compute a new model and send that along.
Computation.ChainTaskAndNotifyControllerWhenFinished(
(model, cancellationToken) => ComputeModelInBackgroundAsync(
localId, model, providers, caretPosition,
disconnectedBufferGraph, triggerInfo, cancellationToken));
}
private Model(
DisconnectedBufferGraph disconnectedBufferGraph,
IList<CompletionItem> totalItems,
IList<CompletionItem> filteredItems,
CompletionItem selectedItem,
ImmutableArray<CompletionItemFilter> completionItemFilters,
ImmutableDictionary<CompletionItemFilter, bool> filterState,
IReadOnlyDictionary<CompletionItem, string> completionItemToFilterText,
bool isHardSelection,
bool isUnique,
bool useSuggestionCompletionMode,
CompletionItem builder,
CompletionItem defaultBuilder,
CompletionTriggerInfo triggerInfo,
ITrackingPoint commitSpanEndPoint,
bool dismissIfEmpty)
{
Contract.ThrowIfFalse(totalItems.Count != 0, "Must have at least one item.");
_disconnectedBufferGraph = disconnectedBufferGraph;
this.TotalItems = totalItems;
this.FilteredItems = filteredItems;
this.FilterState = filterState;
this.SelectedItem = selectedItem;
this.CompletionItemFilters = completionItemFilters;
this.CompletionItemToFilterText = completionItemToFilterText;
this.IsHardSelection = isHardSelection;
this.IsUnique = isUnique;
this.UseSuggestionCompletionMode = useSuggestionCompletionMode;
this.Builder = builder;
this.DefaultBuilder = defaultBuilder;
this.TriggerInfo = triggerInfo;
this.CommitTrackingSpanEndPoint = commitSpanEndPoint;
this.DismissIfEmpty = dismissIfEmpty;
}
private void SetCaretPosition(int desiredCaretPosition)
{
// Now, move the caret to the right location.
var graph = new DisconnectedBufferGraph(this.SubjectBuffer, this.TextView.TextBuffer);
var viewTextSpan = graph.GetSubjectBufferTextSpanInViewBuffer(new TextSpan(desiredCaretPosition, 0));
TextView.Caret.MoveTo(new SnapshotPoint(TextView.TextBuffer.CurrentSnapshot, viewTextSpan.TextSpan.Start));
}
private static ITrackingPoint GetDefaultTrackingSpanEnd(
TextSpan defaultTrackingSpanInSubjectBuffer,
DisconnectedBufferGraph disconnectedBufferGraph)
{
var viewSpan = disconnectedBufferGraph.GetSubjectBufferTextSpanInViewBuffer(defaultTrackingSpanInSubjectBuffer);
return(disconnectedBufferGraph.ViewSnapshot.Version.CreateTrackingPoint(
viewSpan.TextSpan.End,
PointTrackingMode.Positive));
}
public static Model CreateModel(
Document triggerDocument,
DisconnectedBufferGraph disconnectedBufferGraph,
CompletionList originalList,
bool useSuggestionMode,
CompletionTrigger trigger)
{
var selectedItem = originalList.Items.First();
var isHardSelection = false;
var isUnique = false;
// Get the set of actual filters used by all the completion items
// that are in the list.
var actualFiltersSeen = new HashSet <CompletionItemFilter>();
foreach (var item in originalList.Items)
{
foreach (var filter in CompletionItemFilter.AllFilters)
{
if (filter.Matches(item))
{
actualFiltersSeen.Add(filter);
}
}
}
// The set of filters we'll want to show the user are the filters that are actually
// used by our completion items. i.e. there's no reason to show the "field" filter
// if none of completion items is actually a field.
var actualItemFilters = CompletionItemFilter.AllFilters.Where(actualFiltersSeen.Contains)
.ToImmutableArray();
// By default we do not filter anything out.
ImmutableDictionary <CompletionItemFilter, bool> filterState = null;
return(new Model(
triggerDocument,
disconnectedBufferGraph,
originalList,
originalList.Items,
selectedItem,
actualItemFilters,
filterState,
"",
isHardSelection,
isUnique,
useSuggestionMode,
originalList.SuggestionModeItem,
trigger,
GetDefaultTrackingSpanEnd(originalList.Span, disconnectedBufferGraph),
originalList.Rules.DismissIfEmpty));
}
public void ComputeModel(
IList<ISignatureHelpProvider> matchedProviders,
IList<ISignatureHelpProvider> unmatchedProviders,
SignatureHelpTriggerInfo triggerInfo)
{
AssertIsForeground();
var caretPosition = Controller.TextView.GetCaretPoint(Controller.SubjectBuffer).Value;
var disconnectedBufferGraph = new DisconnectedBufferGraph(Controller.SubjectBuffer, Controller.TextView.TextBuffer);
// If we've already computed a model, then just use that. Otherwise, actually
// compute a new model and send that along.
Computation.ChainTaskAndNotifyControllerWhenFinished(
(model, cancellationToken) => ComputeModelInBackgroundAsync(model, matchedProviders, unmatchedProviders, caretPosition, disconnectedBufferGraph, triggerInfo, cancellationToken));
}
public ModelComputer(
Session session,
CompletionService completionService,
CompletionTrigger trigger,
ImmutableHashSet <string> roles,
OptionSet options)
{
_session = session;
_completionService = completionService;
_options = options;
_trigger = trigger;
_subjectBufferCaretPosition = session.Controller.TextView.GetCaretPoint(session.Controller.SubjectBuffer).Value;
_roles = roles;
_text = _subjectBufferCaretPosition.Snapshot.AsText();
_useSuggestionMode = session.Controller.SubjectBuffer.GetOption(Options.EditorCompletionOptions.UseSuggestionMode);
_disconnectedBufferGraph = new DisconnectedBufferGraph(session.Controller.SubjectBuffer, session.Controller.TextView.TextBuffer);
}
public ModelComputer(
Session session,
ICompletionService completionService,
CompletionTriggerInfo triggerInfo,
IEnumerable <CompletionListProvider> completionProviders,
bool isDebugger)
{
_session = session;
_completionService = completionService;
_options = session.Controller.SubjectBuffer.TryGetOptions();
_triggerInfo = triggerInfo;
_subjectBufferCaretPosition = session.Controller.TextView.GetCaretPoint(session.Controller.SubjectBuffer).Value;
_completionProviders = completionProviders;
_text = _subjectBufferCaretPosition.Snapshot.AsText();
_includeBuilder = session.Controller.SubjectBuffer.GetOption(Options.EditorCompletionOptions.UseSuggestionMode);
_disconnectedBufferGraph = new DisconnectedBufferGraph(session.Controller.SubjectBuffer, session.Controller.TextView.TextBuffer);
}
public ModelComputer(
Session session,
CompletionService completionService,
CompletionTrigger trigger,
ImmutableHashSet<string> roles,
OptionSet options)
{
_session = session;
_completionService = completionService;
_options = options;
_trigger = trigger;
_subjectBufferCaretPosition = session.Controller.TextView.GetCaretPoint(session.Controller.SubjectBuffer).Value;
_roles = roles;
_text = _subjectBufferCaretPosition.Snapshot.AsText();
_useSuggestionMode = session.Controller.SubjectBuffer.GetFeatureOnOffOption(Options.EditorCompletionOptions.UseSuggestionMode);
_disconnectedBufferGraph = new DisconnectedBufferGraph(session.Controller.SubjectBuffer, session.Controller.TextView.TextBuffer);
}
public ModelComputer(
Session session,
ICompletionService completionService,
CompletionTriggerInfo triggerInfo,
IEnumerable<ICompletionProvider> completionProviders,
bool isDebugger)
{
_session = session;
_completionService = completionService;
_options = session.Controller.SubjectBuffer.TryGetOptions();
_triggerInfo = triggerInfo;
_subjectBufferCaretPosition = session.Controller.TextView.GetCaretPoint(session.Controller.SubjectBuffer).Value;
_completionProviders = completionProviders;
_text = _subjectBufferCaretPosition.Snapshot.AsText();
_includeBuilder = session.Controller.SubjectBuffer.GetOption(Options.EditorCompletionOptions.UseSuggestionMode);
_disconnectedBufferGraph = new DisconnectedBufferGraph(session.Controller.SubjectBuffer, session.Controller.TextView.TextBuffer);
}
private Model(
DisconnectedBufferGraph disconnectedBufferGraph,
CompletionList originalList,
ImmutableArray <PresentationItem> totalItems,
ImmutableArray <PresentationItem> filteredItems,
PresentationItem selectedItem,
ImmutableArray <CompletionItemFilter> completionItemFilters,
ImmutableDictionary <CompletionItemFilter, bool> filterState,
IReadOnlyDictionary <CompletionItem, string> completionItemToFilterText,
bool isHardSelection,
bool isUnique,
bool useSuggestionMode,
PresentationItem suggestionModeItem,
PresentationItem defaultSuggestionModeItem,
CompletionTrigger trigger,
ITrackingPoint commitSpanEndPoint,
bool dismissIfEmpty)
{
Contract.ThrowIfNull(selectedItem);
Contract.ThrowIfFalse(totalItems.Length != 0, "Must have at least one item.");
Contract.ThrowIfFalse(filteredItems.Length != 0, "Must have at least one filtered item.");
Contract.ThrowIfFalse(filteredItems.Contains(selectedItem) || defaultSuggestionModeItem == selectedItem, "Selected item must be in filtered items.");
_disconnectedBufferGraph = disconnectedBufferGraph;
this.OriginalList = originalList;
this.TotalItems = totalItems;
this.FilteredItems = filteredItems;
this.FilterState = filterState;
this.SelectedItem = selectedItem;
this.CompletionItemFilters = completionItemFilters;
this.CompletionItemToFilterText = completionItemToFilterText;
this.IsHardSelection = isHardSelection;
this.IsUnique = isUnique;
this.UseSuggestionMode = useSuggestionMode;
this.SuggestionModeItem = suggestionModeItem;
this.DefaultSuggestionModeItem = defaultSuggestionModeItem;
this.Trigger = trigger;
this.CommitTrackingSpanEndPoint = commitSpanEndPoint;
this.DismissIfEmpty = dismissIfEmpty;
}
private Model(
DisconnectedBufferGraph disconnectedBufferGraph,
CompletionList originalList,
ImmutableArray<PresentationItem> totalItems,
ImmutableArray<PresentationItem> filteredItems,
PresentationItem selectedItem,
ImmutableArray<CompletionItemFilter> completionItemFilters,
ImmutableDictionary<CompletionItemFilter, bool> filterState,
IReadOnlyDictionary<CompletionItem, string> completionItemToFilterText,
bool isHardSelection,
bool isUnique,
bool useSuggestionMode,
PresentationItem suggestionModeItem,
PresentationItem defaultSuggestionModeItem,
CompletionTrigger trigger,
ITrackingPoint commitSpanEndPoint,
bool dismissIfEmpty)
{
Contract.ThrowIfNull(selectedItem);
Contract.ThrowIfFalse(totalItems.Length != 0, "Must have at least one item.");
Contract.ThrowIfFalse(filteredItems.Length != 0, "Must have at least one filtered item.");
Contract.ThrowIfFalse(filteredItems.Contains(selectedItem) || defaultSuggestionModeItem == selectedItem, "Selected item must be in filtered items.");
_disconnectedBufferGraph = disconnectedBufferGraph;
this.OriginalList = originalList;
this.TotalItems = totalItems;
this.FilteredItems = filteredItems;
this.FilterState = filterState;
this.SelectedItem = selectedItem;
this.CompletionItemFilters = completionItemFilters;
this.CompletionItemToFilterText = completionItemToFilterText;
this.IsHardSelection = isHardSelection;
this.IsUnique = isUnique;
this.UseSuggestionMode = useSuggestionMode;
this.SuggestionModeItem = suggestionModeItem;
this.DefaultSuggestionModeItem = defaultSuggestionModeItem;
this.Trigger = trigger;
this.CommitTrackingSpanEndPoint = commitSpanEndPoint;
this.DismissIfEmpty = dismissIfEmpty;
}
private Model(
Document triggerDocument,
DisconnectedBufferGraph disconnectedBufferGraph,
CompletionList originalList,
ImmutableArray <CompletionItem> filteredItems,
CompletionItem selectedItem,
ImmutableArray <CompletionItemFilter> completionItemFilters,
ImmutableDictionary <CompletionItemFilter, bool> filterState,
string filterText,
bool isHardSelection,
bool isUnique,
bool useSuggestionMode,
CompletionItem suggestionModeItem,
CompletionTrigger trigger,
ITrackingPoint commitSpanEndPoint,
bool dismissIfEmpty)
{
Contract.ThrowIfFalse(originalList.Items.Length != 0, "Must have at least one item.");
Contract.ThrowIfNull(selectedItem);
this.TriggerDocument = triggerDocument;
_disconnectedBufferGraph = disconnectedBufferGraph;
this.OriginalList = originalList;
this.FilteredItems = filteredItems;
this.FilterState = filterState;
this.SelectedItem = selectedItem;
this.CompletionItemFilters = completionItemFilters;
this.FilterText = filterText;
this.IsHardSelection = isHardSelection;
this.IsUnique = isUnique;
this.Trigger = trigger;
this.CommitTrackingSpanEndPoint = commitSpanEndPoint;
this.DismissIfEmpty = dismissIfEmpty;
this.UseSuggestionMode = useSuggestionMode;
this.SuggestionModeItem = suggestionModeItem ?? CreateDefaultSuggestionModeItem();
}
private Model(
Document triggerDocument,
DisconnectedBufferGraph disconnectedBufferGraph,
CompletionList originalList,
ImmutableArray<CompletionItem> filteredItems,
CompletionItem selectedItem,
ImmutableArray<CompletionItemFilter> completionItemFilters,
ImmutableDictionary<CompletionItemFilter, bool> filterState,
string filterText,
bool isHardSelection,
bool isUnique,
bool useSuggestionMode,
CompletionItem suggestionModeItem,
CompletionTrigger trigger,
ITrackingPoint commitSpanEndPoint,
bool dismissIfEmpty)
{
Contract.ThrowIfFalse(originalList.Items.Length != 0, "Must have at least one item.");
Contract.ThrowIfNull(selectedItem);
this.TriggerDocument = triggerDocument;
_disconnectedBufferGraph = disconnectedBufferGraph;
this.OriginalList = originalList;
this.FilteredItems = filteredItems;
this.FilterState = filterState;
this.SelectedItem = selectedItem;
this.CompletionItemFilters = completionItemFilters;
this.FilterText = filterText;
this.IsHardSelection = isHardSelection;
this.IsUnique = isUnique;
this.Trigger = trigger;
this.CommitTrackingSpanEndPoint = commitSpanEndPoint;
this.DismissIfEmpty = dismissIfEmpty;
this.UseSuggestionMode = useSuggestionMode;
this.SuggestionModeItem = suggestionModeItem ?? CreateDefaultSuggestionModeItem();
}
public static Model CreateModel(
Document triggerDocument,
DisconnectedBufferGraph disconnectedBufferGraph,
CompletionList originalList,
bool useSuggestionMode,
CompletionTrigger trigger)
{
var selectedItem = originalList.Items.First();
var isHardSelection = false;
var isUnique = false;
// Get the set of actual filters used by all the completion items
// that are in the list.
var actualFiltersSeen = new HashSet<CompletionItemFilter>();
foreach (var item in originalList.Items)
{
foreach (var filter in CompletionItemFilter.AllFilters)
{
if (filter.Matches(item))
{
actualFiltersSeen.Add(filter);
}
}
}
// The set of filters we'll want to show the user are the filters that are actually
// used by our completion items. i.e. there's no reason to show the "field" filter
// if none of completion items is actually a field.
var actualItemFilters = CompletionItemFilter.AllFilters.Where(actualFiltersSeen.Contains)
.ToImmutableArray();
// By default we do not filter anything out.
ImmutableDictionary<CompletionItemFilter, bool> filterState = null;
return new Model(
triggerDocument,
disconnectedBufferGraph,
originalList,
originalList.Items,
selectedItem,
actualItemFilters,
filterState,
"",
isHardSelection,
isUnique,
useSuggestionMode,
originalList.SuggestionModeItem,
trigger,
GetDefaultTrackingSpanEnd(originalList.Span, disconnectedBufferGraph),
originalList.Rules.DismissIfEmpty);
}
public static Model CreateModel(
DisconnectedBufferGraph disconnectedBufferGraph,
TextSpan defaultTrackingSpanInSubjectBuffer,
ImmutableArray <CompletionItem> totalItems,
CompletionItem selectedItem,
bool isHardSelection,
bool isUnique,
bool useSuggestionCompletionMode,
CompletionItem builder,
CompletionTriggerInfo triggerInfo,
ICompletionService completionService,
Workspace workspace)
{
var updatedTotalItems = totalItems;
CompletionItem updatedSelectedItem = selectedItem;
CompletionItem updatedBuilder = builder;
CompletionItem updatedDefaultBuilder = GetDefaultBuilder(defaultTrackingSpanInSubjectBuffer);
// Get the set of actual filters used by all the completion items
// that are in the list.
var actualFiltersSeen = new HashSet <CompletionItemFilter>();
foreach (var item in totalItems)
{
foreach (var filter in item.Filters)
{
actualFiltersSeen.Add(filter);
}
}
// The set of filters we'll want to show the user are the filters that are actually
// used by our completion items. i.e. there's no reason to show the "field" filter
// if none of completion items is actually a field.
var actualItemFilters = CompletionItemFilter.AllFilters.Where(actualFiltersSeen.Contains)
.ToImmutableArray();
// By default we do not filter anything out.
ImmutableDictionary <CompletionItemFilter, bool> filterState = null;
if (completionService != null &&
workspace != null &&
workspace.Kind != WorkspaceKind.Interactive && // TODO (https://github.com/dotnet/roslyn/issues/5107): support in interactive
workspace.Options.GetOption(InternalFeatureOnOffOptions.Snippets) &&
triggerInfo.TriggerReason != CompletionTriggerReason.Snippets)
{
// In order to add snippet expansion notes to completion item descriptions, update
// all of the provided CompletionItems to DescriptionModifyingCompletionItem which will proxy
// requests to the original completion items and add the snippet expansion note to
// the description if necessary. We won't do this if the list was triggered to show
// snippet shortcuts.
var updatedTotalItemsBuilder = ImmutableArray.CreateBuilder <CompletionItem>();
updatedSelectedItem = null;
foreach (var item in totalItems)
{
var updatedItem = new DescriptionModifyingCompletionItem(item, completionService, workspace);
updatedTotalItemsBuilder.Add(updatedItem);
if (item == selectedItem)
{
updatedSelectedItem = updatedItem;
}
}
updatedTotalItems = updatedTotalItemsBuilder.AsImmutable();
updatedBuilder = null;
if (builder != null)
{
updatedBuilder = new DescriptionModifyingCompletionItem(builder, completionService, workspace);
}
updatedDefaultBuilder = new DescriptionModifyingCompletionItem(
GetDefaultBuilder(defaultTrackingSpanInSubjectBuffer),
completionService,
workspace);
}
var completionItemToFilterText = new Dictionary <CompletionItem, string>();
return(new Model(
disconnectedBufferGraph,
updatedTotalItems,
updatedTotalItems,
updatedSelectedItem,
actualItemFilters,
filterState,
completionItemToFilterText,
isHardSelection,
isUnique,
useSuggestionCompletionMode,
updatedBuilder,
updatedDefaultBuilder,
triggerInfo,
GetDefaultTrackingSpanEnd(defaultTrackingSpanInSubjectBuffer, disconnectedBufferGraph),
completionService.DismissIfEmpty));
}
public static Model CreateModel(
DisconnectedBufferGraph disconnectedBufferGraph,
TextSpan defaultTrackingSpanInSubjectBuffer,
IList<CompletionItem> totalItems,
CompletionItem selectedItem,
bool isHardSelection,
bool isUnique,
bool useSuggestionCompletionMode,
CompletionItem builder,
CompletionTriggerInfo triggerInfo,
ICompletionService completionService,
Workspace workspace)
{
var updatedTotalItems = totalItems;
CompletionItem updatedSelectedItem = selectedItem;
CompletionItem updatedBuilder = builder;
CompletionItem updatedDefaultBuilder = GetDefaultBuilder(defaultTrackingSpanInSubjectBuffer);
if (completionService != null && workspace != null && triggerInfo.TriggerReason != CompletionTriggerReason.Snippets)
{
// In order to add snippet expansion notes to completion item descriptions, update
// all of the provided CompletionItems to DisplayCompletionItems which will proxy
// requests to the original completion items and add the snippet expansion note to
// the description if necessary. We won't do this if the list was triggered to show
// snippet shorcuts.
updatedTotalItems = new List<CompletionItem>();
updatedSelectedItem = null;
foreach (var item in totalItems)
{
var updatedItem = new DescriptionModifyingCompletionItem(item, completionService, workspace);
updatedTotalItems.Add(updatedItem);
if (item == selectedItem)
{
updatedSelectedItem = updatedItem;
}
}
updatedBuilder = null;
if (builder != null)
{
updatedBuilder = new DescriptionModifyingCompletionItem(builder, completionService, workspace);
}
updatedDefaultBuilder = new DescriptionModifyingCompletionItem(
GetDefaultBuilder(defaultTrackingSpanInSubjectBuffer),
completionService,
workspace);
}
return new Model(
disconnectedBufferGraph,
updatedTotalItems,
updatedTotalItems,
updatedSelectedItem,
isHardSelection,
isUnique,
useSuggestionCompletionMode,
updatedBuilder,
updatedDefaultBuilder,
triggerInfo,
GetDefaultTrackingSpanEnd(defaultTrackingSpanInSubjectBuffer, disconnectedBufferGraph),
completionService.DismissIfEmpty);
}
public static Model CreateModel(
DisconnectedBufferGraph disconnectedBufferGraph,
CompletionList originalList,
CompletionItem selectedItem,
bool isHardSelection,
bool isUnique,
bool useSuggestionMode,
CompletionTrigger trigger,
CompletionService completionService,
Workspace workspace)
{
ImmutableArray <PresentationItem> totalItems;
CompletionItem suggestionModeItem = originalList.SuggestionModeItem;
PresentationItem suggestionModePresentationItem;
PresentationItem defaultSuggestionModePresentationItem;
// Get the set of actual filters used by all the completion items
// that are in the list.
var actualFiltersSeen = new HashSet <CompletionItemFilter>();
foreach (var item in originalList.Items)
{
foreach (var filter in CompletionItemFilter.AllFilters)
{
if (filter.Matches(item))
{
actualFiltersSeen.Add(filter);
}
}
}
// The set of filters we'll want to show the user are the filters that are actually
// used by our completion items. i.e. there's no reason to show the "field" filter
// if none of completion items is actually a field.
var actualItemFilters = CompletionItemFilter.AllFilters.Where(actualFiltersSeen.Contains)
.ToImmutableArray();
// By default we do not filter anything out.
ImmutableDictionary <CompletionItemFilter, bool> filterState = null;
if (completionService != null &&
workspace != null &&
workspace.Kind != WorkspaceKind.Interactive && // TODO (https://github.com/dotnet/roslyn/issues/5107): support in interactive
workspace.Options.GetOption(InternalFeatureOnOffOptions.Snippets) &&
trigger.Kind != CompletionTriggerKind.Snippets)
{
// In order to add snippet expansion notes to completion item descriptions, update
// all of the provided CompletionItems to DescriptionModifyingCompletionItem which will proxy
// requests to the original completion items and add the snippet expansion note to
// the description if necessary. We won't do this if the list was triggered to show
// snippet shortcuts.
var totalItemsBuilder = ImmutableArray.CreateBuilder <PresentationItem>();
foreach (var item in originalList.Items)
{
totalItemsBuilder.Add(new DescriptionModifyingPresentationItem(item, completionService));
}
totalItems = totalItemsBuilder.AsImmutable();
defaultSuggestionModePresentationItem = new DescriptionModifyingPresentationItem(CreateDefaultSuggestionModeItem(originalList.DefaultSpan), completionService, isSuggestionModeItem: true);
suggestionModePresentationItem = suggestionModeItem != null ? new DescriptionModifyingPresentationItem(suggestionModeItem, completionService, isSuggestionModeItem: true) : null;
}
else
{
totalItems = originalList.Items.Select(item => new SimplePresentationItem(item, completionService)).ToImmutableArray <PresentationItem>();
defaultSuggestionModePresentationItem = new SimplePresentationItem(CreateDefaultSuggestionModeItem(originalList.DefaultSpan), completionService, isSuggestionModeItem: true);
suggestionModePresentationItem = suggestionModeItem != null ? new SimplePresentationItem(suggestionModeItem, completionService, isSuggestionModeItem: true) : null;
}
var selectedPresentationItem = totalItems.FirstOrDefault(it => it.Item == selectedItem);
var completionItemToFilterText = new Dictionary <CompletionItem, string>();
return(new Model(
disconnectedBufferGraph,
originalList,
totalItems,
totalItems,
selectedPresentationItem,
actualItemFilters,
filterState,
completionItemToFilterText,
isHardSelection,
isUnique,
useSuggestionMode,
suggestionModePresentationItem,
defaultSuggestionModePresentationItem,
trigger,
GetDefaultTrackingSpanEnd(originalList.DefaultSpan, disconnectedBufferGraph),
originalList.Rules.DismissIfEmpty));
}
private static ITrackingPoint GetDefaultTrackingSpanEnd(
TextSpan defaultTrackingSpanInSubjectBuffer,
DisconnectedBufferGraph disconnectedBufferGraph)
{
var viewSpan = disconnectedBufferGraph.GetSubjectBufferTextSpanInViewBuffer(defaultTrackingSpanInSubjectBuffer);
return disconnectedBufferGraph.ViewSnapshot.Version.CreateTrackingPoint(
viewSpan.TextSpan.End,
PointTrackingMode.Positive);
}
public static Model CreateModel(
DisconnectedBufferGraph disconnectedBufferGraph,
TextSpan defaultTrackingSpanInSubjectBuffer,
ImmutableArray<CompletionItem> totalItems,
CompletionItem selectedItem,
bool isHardSelection,
bool isUnique,
bool useSuggestionCompletionMode,
CompletionItem builder,
CompletionTriggerInfo triggerInfo,
ICompletionService completionService,
Workspace workspace)
{
var updatedTotalItems = totalItems;
CompletionItem updatedSelectedItem = selectedItem;
CompletionItem updatedBuilder = builder;
CompletionItem updatedDefaultBuilder = GetDefaultBuilder(defaultTrackingSpanInSubjectBuffer);
// Get the set of actual filters used by all the completion items
// that are in the list.
var actualFiltersSeen = new HashSet<CompletionItemFilter>();
foreach (var item in totalItems)
{
foreach (var filter in item.Filters)
{
actualFiltersSeen.Add(filter);
}
}
// The set of filters we'll want to show the user are the filters that are actually
// used by our completion items. i.e. there's no reason to show the "field" filter
// if none of completion items is actually a field.
var actualItemFilters = CompletionItemFilter.AllFilters.Where(actualFiltersSeen.Contains)
.ToImmutableArray();
// By default we do not filter anything out.
ImmutableDictionary<CompletionItemFilter, bool> filterState = null;
if (completionService != null &&
workspace != null &&
workspace.Kind != WorkspaceKind.Interactive && // TODO (https://github.com/dotnet/roslyn/issues/5107): support in interactive
workspace.Options.GetOption(InternalFeatureOnOffOptions.Snippets) &&
triggerInfo.TriggerReason != CompletionTriggerReason.Snippets)
{
// In order to add snippet expansion notes to completion item descriptions, update
// all of the provided CompletionItems to DescriptionModifyingCompletionItem which will proxy
// requests to the original completion items and add the snippet expansion note to
// the description if necessary. We won't do this if the list was triggered to show
// snippet shortcuts.
var updatedTotalItemsBuilder = ImmutableArray.CreateBuilder<CompletionItem>();
updatedSelectedItem = null;
foreach (var item in totalItems)
{
var updatedItem = new DescriptionModifyingCompletionItem(item, completionService, workspace);
updatedTotalItemsBuilder.Add(updatedItem);
if (item == selectedItem)
{
updatedSelectedItem = updatedItem;
}
}
updatedTotalItems = updatedTotalItemsBuilder.AsImmutable();
updatedBuilder = null;
if (builder != null)
{
updatedBuilder = new DescriptionModifyingCompletionItem(builder, completionService, workspace);
}
updatedDefaultBuilder = new DescriptionModifyingCompletionItem(
GetDefaultBuilder(defaultTrackingSpanInSubjectBuffer),
completionService,
workspace);
}
var completionItemToFilterText= new Dictionary<CompletionItem, string>();
return new Model(
disconnectedBufferGraph,
updatedTotalItems,
updatedTotalItems,
updatedSelectedItem,
actualItemFilters,
filterState,
completionItemToFilterText,
isHardSelection,
isUnique,
useSuggestionCompletionMode,
updatedBuilder,
updatedDefaultBuilder,
triggerInfo,
GetDefaultTrackingSpanEnd(defaultTrackingSpanInSubjectBuffer, disconnectedBufferGraph),
completionService.DismissIfEmpty);
}
public static Model CreateModel(
DisconnectedBufferGraph disconnectedBufferGraph,
TextSpan defaultTrackingSpanInSubjectBuffer,
ImmutableArray<CompletionItem> totalItems,
CompletionItem selectedItem,
bool isHardSelection,
bool isUnique,
bool useSuggestionCompletionMode,
CompletionItem builder,
CompletionTriggerInfo triggerInfo,
ICompletionService completionService,
Workspace workspace)
{
var updatedTotalItems = totalItems;
CompletionItem updatedSelectedItem = selectedItem;
CompletionItem updatedBuilder = builder;
CompletionItem updatedDefaultBuilder = GetDefaultBuilder(defaultTrackingSpanInSubjectBuffer);
if (completionService != null &&
workspace != null &&
workspace.Kind != WorkspaceKind.Interactive && // TODO (https://github.com/dotnet/roslyn/issues/5107): support in interactive
workspace.Options.GetOption(InternalFeatureOnOffOptions.Snippets) &&
triggerInfo.TriggerReason != CompletionTriggerReason.Snippets)
{
// In order to add snippet expansion notes to completion item descriptions, update
// all of the provided CompletionItems to DescriptionModifyingCompletionItem which will proxy
// requests to the original completion items and add the snippet expansion note to
// the description if necessary. We won't do this if the list was triggered to show
// snippet shortcuts.
var updatedTotalItemsBuilder = ImmutableArray.CreateBuilder<CompletionItem>();
updatedSelectedItem = null;
foreach (var item in totalItems)
{
var updatedItem = new DescriptionModifyingCompletionItem(item, completionService, workspace);
updatedTotalItemsBuilder.Add(updatedItem);
if (item == selectedItem)
{
updatedSelectedItem = updatedItem;
}
}
updatedTotalItems = updatedTotalItemsBuilder.AsImmutable();
updatedBuilder = null;
if (builder != null)
{
updatedBuilder = new DescriptionModifyingCompletionItem(builder, completionService, workspace);
}
updatedDefaultBuilder = new DescriptionModifyingCompletionItem(
GetDefaultBuilder(defaultTrackingSpanInSubjectBuffer),
completionService,
workspace);
}
return new Model(
disconnectedBufferGraph,
updatedTotalItems,
updatedTotalItems,
updatedSelectedItem,
isHardSelection,
isUnique,
useSuggestionCompletionMode,
updatedBuilder,
updatedDefaultBuilder,
triggerInfo,
GetDefaultTrackingSpanEnd(defaultTrackingSpanInSubjectBuffer, disconnectedBufferGraph),
completionService.DismissIfEmpty);
}
public static Model CreateModel(
DisconnectedBufferGraph disconnectedBufferGraph,
TextSpan defaultTrackingSpanInSubjectBuffer,
IList <CompletionItem> totalItems,
CompletionItem selectedItem,
bool isHardSelection,
bool isUnique,
bool useSuggestionCompletionMode,
CompletionItem builder,
CompletionTriggerInfo triggerInfo,
ICompletionService completionService,
Workspace workspace)
{
var updatedTotalItems = totalItems;
CompletionItem updatedSelectedItem = selectedItem;
CompletionItem updatedBuilder = builder;
CompletionItem updatedDefaultBuilder = GetDefaultBuilder(defaultTrackingSpanInSubjectBuffer);
if (completionService != null && workspace != null && triggerInfo.TriggerReason != CompletionTriggerReason.Snippets)
{
// In order to add snippet expansion notes to completion item descriptions, update
// all of the provided CompletionItems to DisplayCompletionItems which will proxy
// requests to the original completion items and add the snippet expansion note to
// the description if necessary. We won't do this if the list was triggered to show
// snippet shorcuts.
updatedTotalItems = new List <CompletionItem>();
updatedSelectedItem = null;
foreach (var item in totalItems)
{
var updatedItem = new DescriptionModifyingCompletionItem(item, completionService, workspace);
updatedTotalItems.Add(updatedItem);
if (item == selectedItem)
{
updatedSelectedItem = updatedItem;
}
}
updatedBuilder = null;
if (builder != null)
{
updatedBuilder = new DescriptionModifyingCompletionItem(builder, completionService, workspace);
}
updatedDefaultBuilder = new DescriptionModifyingCompletionItem(
GetDefaultBuilder(defaultTrackingSpanInSubjectBuffer),
completionService,
workspace);
}
return(new Model(
disconnectedBufferGraph,
updatedTotalItems,
updatedTotalItems,
updatedSelectedItem,
isHardSelection,
isUnique,
useSuggestionCompletionMode,
updatedBuilder,
updatedDefaultBuilder,
triggerInfo,
GetDefaultTrackingSpanEnd(defaultTrackingSpanInSubjectBuffer, disconnectedBufferGraph),
completionService.DismissIfEmpty));
}
public static Model CreateModel(
DisconnectedBufferGraph disconnectedBufferGraph,
TextSpan defaultTrackingSpanInSubjectBuffer,
ImmutableArray <CompletionItem> totalItems,
CompletionItem selectedItem,
bool isHardSelection,
bool isUnique,
bool useSuggestionCompletionMode,
CompletionItem builder,
CompletionTriggerInfo triggerInfo,
ICompletionService completionService,
Workspace workspace)
{
var updatedTotalItems = totalItems;
CompletionItem updatedSelectedItem = selectedItem;
CompletionItem updatedBuilder = builder;
CompletionItem updatedDefaultBuilder = GetDefaultBuilder(defaultTrackingSpanInSubjectBuffer);
if (completionService != null &&
workspace != null &&
workspace.Kind != WorkspaceKind.Interactive && // TODO (https://github.com/dotnet/roslyn/issues/5107): support in interactive
workspace.Options.GetOption(InternalFeatureOnOffOptions.Snippets) &&
triggerInfo.TriggerReason != CompletionTriggerReason.Snippets)
{
// In order to add snippet expansion notes to completion item descriptions, update
// all of the provided CompletionItems to DescriptionModifyingCompletionItem which will proxy
// requests to the original completion items and add the snippet expansion note to
// the description if necessary. We won't do this if the list was triggered to show
// snippet shortcuts.
var updatedTotalItemsBuilder = ImmutableArray.CreateBuilder <CompletionItem>();
updatedSelectedItem = null;
foreach (var item in totalItems)
{
var updatedItem = new DescriptionModifyingCompletionItem(item, completionService, workspace);
updatedTotalItemsBuilder.Add(updatedItem);
if (item == selectedItem)
{
updatedSelectedItem = updatedItem;
}
}
updatedTotalItems = updatedTotalItemsBuilder.AsImmutable();
updatedBuilder = null;
if (builder != null)
{
updatedBuilder = new DescriptionModifyingCompletionItem(builder, completionService, workspace);
}
updatedDefaultBuilder = new DescriptionModifyingCompletionItem(
GetDefaultBuilder(defaultTrackingSpanInSubjectBuffer),
completionService,
workspace);
}
return(new Model(
disconnectedBufferGraph,
updatedTotalItems,
updatedTotalItems,
updatedSelectedItem,
isHardSelection,
isUnique,
useSuggestionCompletionMode,
updatedBuilder,
updatedDefaultBuilder,
triggerInfo,
GetDefaultTrackingSpanEnd(defaultTrackingSpanInSubjectBuffer, disconnectedBufferGraph),
completionService.DismissIfEmpty));
}
private async Task<Model> ComputeModelInBackgroundAsync(
Model currentModel,
IList<ISignatureHelpProvider> matchedProviders,
IList<ISignatureHelpProvider> unmatchedProviders,
SnapshotPoint caretPosition,
DisconnectedBufferGraph disconnectedBufferGraph,
SignatureHelpTriggerInfo triggerInfo,
CancellationToken cancellationToken)
{
try
{
using (Logger.LogBlock(FunctionId.SignatureHelp_ModelComputation_ComputeModelInBackground, cancellationToken))
{
AssertIsBackground();
cancellationToken.ThrowIfCancellationRequested();
var document = await Controller.DocumentProvider.GetDocumentAsync(caretPosition.Snapshot, cancellationToken).ConfigureAwait(false);
if (document == null)
{
return currentModel;
}
if (triggerInfo.TriggerReason == SignatureHelpTriggerReason.RetriggerCommand)
{
if (currentModel == null ||
(triggerInfo.TriggerCharacter.HasValue && !currentModel.Provider.IsRetriggerCharacter(triggerInfo.TriggerCharacter.Value)))
{
return currentModel;
}
}
// first try to query the providers that can trigger on the specified character
var result = await ComputeItemsAsync(matchedProviders, caretPosition, triggerInfo, document, cancellationToken).ConfigureAwait(false);
var provider = result.Item1;
var items = result.Item2;
if (provider == null)
{
// no match, so now query the other providers
result = await ComputeItemsAsync(unmatchedProviders, caretPosition, triggerInfo, document, cancellationToken).ConfigureAwait(false);
provider = result.Item1;
items = result.Item2;
if (provider == null)
{
// the other providers didn't produce items either, so we don't produce a model
return null;
}
}
if (currentModel != null &&
currentModel.Provider == provider &&
currentModel.GetCurrentSpanInSubjectBuffer(disconnectedBufferGraph.SubjectBufferSnapshot).Span.Start == items.ApplicableSpan.Start &&
currentModel.ArgumentIndex == items.ArgumentIndex &&
currentModel.ArgumentCount == items.ArgumentCount &&
currentModel.ArgumentName == items.ArgumentName)
{
// The new model is the same as the current model. Return the currentModel
// so we keep the active selection.
return currentModel;
}
var selectedItem = GetSelectedItem(currentModel, items, provider);
var model = new Model(disconnectedBufferGraph, items.ApplicableSpan, provider,
items.Items, selectedItem, items.ArgumentIndex, items.ArgumentCount, items.ArgumentName,
selectedParameter: 0);
var syntaxFactsService = document.GetLanguageService<ISyntaxFactsService>();
var isCaseSensitive = syntaxFactsService == null || syntaxFactsService.IsCaseSensitive;
var selection = DefaultSignatureHelpSelector.GetSelection(model.Items,
model.SelectedItem, model.ArgumentIndex, model.ArgumentCount, model.ArgumentName, isCaseSensitive);
return model.WithSelectedItem(selection.SelectedItem)
.WithSelectedParameter(selection.SelectedParameter);
}
}
catch (Exception e) when (FatalError.ReportUnlessCanceled(e))
{
throw ExceptionUtilities.Unreachable;
}
}
private async Task <Model> ComputeModelInBackgroundAsync(
Model currentModel,
ImmutableArray <ISignatureHelpProvider> providers,
SnapshotPoint caretPosition,
DisconnectedBufferGraph disconnectedBufferGraph,
SignatureHelpTriggerInfo triggerInfo,
CancellationToken cancellationToken)
{
try
{
using (Logger.LogBlock(FunctionId.SignatureHelp_ModelComputation_ComputeModelInBackground, cancellationToken))
{
AssertIsBackground();
cancellationToken.ThrowIfCancellationRequested();
var document = Controller.DocumentProvider.GetDocument(caretPosition.Snapshot, cancellationToken);
if (document == null)
{
return(currentModel);
}
if (triggerInfo.TriggerReason == SignatureHelpTriggerReason.RetriggerCommand)
{
if (currentModel == null)
{
return(null);
}
if (triggerInfo.TriggerCharacter.HasValue &&
!currentModel.Provider.IsRetriggerCharacter(triggerInfo.TriggerCharacter.Value))
{
return(currentModel);
}
}
// first try to query the providers that can trigger on the specified character
var(provider, items) = await ComputeItemsAsync(
providers, caretPosition, triggerInfo,
document, cancellationToken).ConfigureAwait(false);
if (provider == null)
{
// No provider produced items. So we can't produce a model
return(null);
}
if (currentModel != null &&
currentModel.Provider == provider &&
currentModel.GetCurrentSpanInSubjectBuffer(disconnectedBufferGraph.SubjectBufferSnapshot).Span.Start == items.ApplicableSpan.Start &&
currentModel.Items.IndexOf(currentModel.SelectedItem) == items.SelectedItemIndex &&
currentModel.ArgumentIndex == items.ArgumentIndex &&
currentModel.ArgumentCount == items.ArgumentCount &&
currentModel.ArgumentName == items.ArgumentName)
{
// The new model is the same as the current model. Return the currentModel
// so we keep the active selection.
return(currentModel);
}
var selectedItem = GetSelectedItem(currentModel, items, provider, out var userSelected);
var model = new Model(disconnectedBufferGraph, items.ApplicableSpan, provider,
items.Items, selectedItem, items.ArgumentIndex, items.ArgumentCount, items.ArgumentName,
selectedParameter: 0, userSelected);
var syntaxFactsService = document.GetLanguageService <ISyntaxFactsService>();
var isCaseSensitive = syntaxFactsService == null || syntaxFactsService.IsCaseSensitive;
var selection = DefaultSignatureHelpSelector.GetSelection(model.Items,
model.SelectedItem, model.UserSelected, model.ArgumentIndex, model.ArgumentCount, model.ArgumentName, isCaseSensitive);
return(model.WithSelectedItem(selection.SelectedItem, selection.UserSelected)
.WithSelectedParameter(selection.SelectedParameter));
}
}
catch (Exception e) when(FatalError.ReportUnlessCanceled(e))
{
throw ExceptionUtilities.Unreachable;
}
}
public static Model CreateModel(
Document triggerDocument,
DisconnectedBufferGraph disconnectedBufferGraph,
CompletionList originalList,
CompletionItem selectedItem,
bool isHardSelection,
bool isUnique,
bool useSuggestionMode,
CompletionTrigger trigger,
CompletionService completionService,
Workspace workspace)
{
ImmutableArray<PresentationItem> totalItems;
CompletionItem suggestionModeItem = originalList.SuggestionModeItem;
PresentationItem suggestionModePresentationItem;
PresentationItem defaultSuggestionModePresentationItem;
// Get the set of actual filters used by all the completion items
// that are in the list.
var actualFiltersSeen = new HashSet<CompletionItemFilter>();
foreach (var item in originalList.Items)
{
foreach (var filter in CompletionItemFilter.AllFilters)
{
if (filter.Matches(item))
{
actualFiltersSeen.Add(filter);
}
}
}
// The set of filters we'll want to show the user are the filters that are actually
// used by our completion items. i.e. there's no reason to show the "field" filter
// if none of completion items is actually a field.
var actualItemFilters = CompletionItemFilter.AllFilters.Where(actualFiltersSeen.Contains)
.ToImmutableArray();
// By default we do not filter anything out.
ImmutableDictionary<CompletionItemFilter, bool> filterState = null;
if (completionService != null &&
workspace != null &&
workspace.Kind != WorkspaceKind.Interactive && // TODO (https://github.com/dotnet/roslyn/issues/5107): support in interactive
workspace.Options.GetOption(InternalFeatureOnOffOptions.Snippets) &&
trigger.Kind != CompletionTriggerKind.Snippets)
{
// In order to add snippet expansion notes to completion item descriptions, update
// all of the provided CompletionItems to DescriptionModifyingCompletionItem which will proxy
// requests to the original completion items and add the snippet expansion note to
// the description if necessary. We won't do this if the list was triggered to show
// snippet shortcuts.
var totalItemsBuilder = ArrayBuilder<PresentationItem>.GetInstance();
foreach (var item in originalList.Items)
{
totalItemsBuilder.Add(new DescriptionModifyingPresentationItem(item, completionService));
}
totalItems = totalItemsBuilder.ToImmutableAndFree();
defaultSuggestionModePresentationItem = new DescriptionModifyingPresentationItem(
CreateDefaultSuggestionModeItem(), completionService, isSuggestionModeItem: true);
suggestionModePresentationItem = suggestionModeItem != null ? new DescriptionModifyingPresentationItem(suggestionModeItem, completionService, isSuggestionModeItem: true) : null;
}
else
{
totalItems = originalList.Items.Select(item => new SimplePresentationItem(item, completionService)).ToImmutableArray<PresentationItem>();
defaultSuggestionModePresentationItem = new SimplePresentationItem(CreateDefaultSuggestionModeItem(), completionService, isSuggestionModeItem: true);
suggestionModePresentationItem = suggestionModeItem != null ? new SimplePresentationItem(suggestionModeItem, completionService, isSuggestionModeItem: true) : null;
}
var selectedPresentationItem = totalItems.FirstOrDefault(it => it.Item == selectedItem);
return new Model(
triggerDocument,
disconnectedBufferGraph,
originalList,
totalItems,
totalItems,
selectedPresentationItem,
actualItemFilters,
filterState,
"",
isHardSelection,
isUnique,
useSuggestionMode,
suggestionModePresentationItem,
defaultSuggestionModePresentationItem,
trigger,
GetDefaultTrackingSpanEnd(originalList.Span, disconnectedBufferGraph),
originalList.Rules.DismissIfEmpty);
}