/// <summary>
/// Gets the declarations and snippet entries for the completion
/// </summary>
private CompletionSet GetCompletions(List <Declaration> attributes, ICompletionSession session)
{
// Add IPy completion
var completions = new List <Completion>();
completions.AddRange(attributes.Select(declaration => new PyCompletion(declaration, glyphService)));
if (completions.Count > 0)
{
// Add Snippets entries
var expansionManager = (IVsTextManager2)this.serviceProvider.GetService(typeof(SVsTextManager));
var snippetsEnumerator = new SnippetsEnumerator(expansionManager, Constants.IronPythonLanguageServiceGuid);
completions.AddRange(snippetsEnumerator.Select(expansion => new PyCompletion(expansion, glyphService)));
}
// we want the user to get a sorted list
completions.Sort();
return
(new CompletionSet("IPyCompletion",
"IronPython Completion",
CreateTrackingSpan(session.GetTriggerPoint(session.TextView.TextBuffer).GetPosition(textBuffer.CurrentSnapshot)),
completions,
null)
);
}
public int Exec(ref Guid pguidCmdGroup, uint nCmdID, uint nCmdexecopt, IntPtr pvaIn, IntPtr pvaOut)
{
// Handle VS commands to support code snippets
if (pguidCmdGroup == VSConstants.VSStd2K)
{
if (nCmdID == (uint)VSConstants.VSStd2KCmdID.INSERTSNIPPET || nCmdID == (uint)VSConstants.VSStd2KCmdID.SURROUNDWITH)
{
IVsTextManager2 textManager = (IVsTextManager2)this.serviceProvider.GetService(typeof(SVsTextManager));
IVsExpansionManager expansionManager;
if (VSConstants.S_OK == textManager.GetExpansionManager(out expansionManager))
{
expansionManager.InvokeInsertionUI(
vsTextView,
this,
Constants.IronPythonLanguageServiceGuid,
null,
0,
1,
null,
0,
1,
"Insert Snippet",
string.Empty);
}
return(VSConstants.S_OK);
}
if (this.expansionSession != null)
{
// Handle VS Expansion (Code Snippets) keys
if ((nCmdID == (uint)VSConstants.VSStd2KCmdID.TAB))
{
if (expansionSession.GoToNextExpansionField(0) == VSConstants.S_OK)
{
return(VSConstants.S_OK);
}
}
else if ((nCmdID == (uint)VSConstants.VSStd2KCmdID.BACKTAB))
{
if (expansionSession.GoToPreviousExpansionField() == VSConstants.S_OK)
{
return(VSConstants.S_OK);
}
}
else if ((nCmdID == (uint)VSConstants.VSStd2KCmdID.RETURN || nCmdID == (uint)VSConstants.VSStd2KCmdID.CANCEL))
{
if (expansionSession.EndCurrentExpansion(0) == VSConstants.S_OK)
{
expansionSession = null;
return(VSConstants.S_OK);
}
}
}
// Handle Edit.ListMembers or Edit.CompleteWord commands
if ((nCmdID == (uint)VSConstants.VSStd2KCmdID.SHOWMEMBERLIST || nCmdID == (uint)VSConstants.VSStd2KCmdID.COMPLETEWORD))
{
if (activeSession != null)
{
activeSession.Dismiss();
}
ShowCompletion();
return(VSConstants.S_OK);
}
// Handle Enter/Tab commit keys
if (activeSession != null && (nCmdID == (uint)VSConstants.VSStd2KCmdID.RETURN || nCmdID == (uint)VSConstants.VSStd2KCmdID.TAB))
{
if (activeSession.SelectedCompletionSet.SelectionStatus.IsSelected)
{
activeSession.Commit();
}
else
{
activeSession.Dismiss();
}
return(VSConstants.S_OK);
}
// Handle Code Snippets after pressing the Tab key without completion
if (activeSession == null && (nCmdID == (uint)VSConstants.VSStd2KCmdID.TAB))
{
using (var systemState = new SystemState())
{
// Get the current line text until the cursor
var line = this.textView.GetTextViewLineContainingBufferPosition(this.textView.Caret.Position.BufferPosition);
var text = this.textView.TextSnapshot.GetText(line.Start.Position, this.textView.Caret.Position.BufferPosition - line.Start.Position);
// Create a tokenizer for the text
var tokenizer = new Tokenizer(text.ToCharArray(), true, systemState, new CompilerContext(string.Empty, new QuietCompilerSink()));
// Get the last token in the text
Token currentToken, lastToken = null;
while ((currentToken = tokenizer.Next()).Kind != TokenKind.NewLine)
{
lastToken = currentToken;
}
if (lastToken != null && lastToken.Kind != TokenKind.Constant)
{
var expansionManager = (IVsTextManager2)this.serviceProvider.GetService(typeof(SVsTextManager));
var snippetsEnumerator = new SnippetsEnumerator(expansionManager, Constants.IronPythonLanguageServiceGuid);
// Search a snippet that matched the token text
var expansion = snippetsEnumerator.FirstOrDefault(e => e.title == lastToken.Value.ToString());
if (expansion.title != null)
{
// Set the location where the snippet will be inserted
int startLine, startColumn, endLine, endColumn;
this.vsTextView.GetCaretPos(out startLine, out endColumn);
startColumn = endColumn - expansion.title.Length;
endLine = startLine;
// Insert the snippet
InsertCodeExpansion(expansion, startLine, startColumn, endLine, endColumn);
return(VSConstants.S_OK);
}
}
}
}
// Hanlde other keys
if ((nCmdID == (uint)VSConstants.VSStd2KCmdID.TYPECHAR))
{
char typedChar = (char)(ushort)Marshal.GetObjectForNativeVariant(pvaIn);
if (activeSession == null)
{
// Handle trigger keys
// Check if the typed char is a trigger
if (IsTriggerKey(typedChar))
{
var result = this.nextCommandTarget.Exec(pguidCmdGroup, nCmdID, nCmdexecopt, pvaIn, pvaOut);
ShowCompletion();
return(result);
}
}
else
{
// Handle commit keys
// Check if the typed char is a commit key
if (IsCommitKey(typedChar))
{
if (activeSession.SelectedCompletionSet.SelectionStatus.IsSelected)
{
activeSession.Commit();
}
else
{
activeSession.Dismiss();
}
var result = this.nextCommandTarget.Exec(pguidCmdGroup, nCmdID, nCmdexecopt, pvaIn, pvaOut);
// Check we should trigger completion after comitting the previous session (for example, after typing dot '.')
if (IsTriggerKey(typedChar))
{
ShowCompletion();
}
return(result);
}
}
}
}
// we haven't handled this command so pass it onto the next target
return(this.nextCommandTarget.Exec(pguidCmdGroup, nCmdID, nCmdexecopt, pvaIn, pvaOut));
}