ExpressionContext FindExactContextForNewCompletion(ITextEditor editor, string documentToCursor,
IDocumentLine currentLine, int pos)
{
CSharpExpressionFinder ef = CreateExpressionFinder(editor.Document.Text);
// find expression on left hand side of the assignment
ExpressionResult lhsExpr = ef.FindExpression(documentToCursor, currentLine.Offset + pos);
if (lhsExpr.Expression != null)
{
ResolveResult rr = ParserService.Resolve(lhsExpr, currentLine.LineNumber, pos, editor.Document.Text, editor.Document.Text, ProjectContent);
if (rr != null && rr.ResolvedType != null)
{
ExpressionContext context;
IClass c;
if (rr.ResolvedType.IsArrayReturnType)
{
// when creating an array, all classes deriving from the array's element type are allowed
IReturnType elementType = rr.ResolvedType.CastToArrayReturnType().ArrayElementType;
c = elementType != null?elementType.GetUnderlyingClass() : null;
context = ExpressionContext.TypeDerivingFrom(elementType, false);
}
else
{
// when creating a normal instance, all non-abstract classes deriving from the type
// are allowed
c = rr.ResolvedType.GetUnderlyingClass();
context = ExpressionContext.TypeDerivingFrom(rr.ResolvedType, true);
}
if (c != null && context.ShowEntry(c))
{
// Try to suggest an entry (List<int> a = new => suggest List<int>).
string suggestedClassName = LanguageProperties.CSharp.CodeGenerator.GenerateCode(
CodeGenerator.ConvertType(
rr.ResolvedType,
new ClassFinder(ParserService.GetParseInformation(editor.Document.Text, ProjectContent), editor.Caret.Line, editor.Caret.Column)
), "");
context.SuggestedItem = suggestedClassName != c.Name
? new SuggestedCodeCompletionItem(c, suggestedClassName, ProjectContent)
: new CodeCompletionItem(c, ProjectContent);
}
return(context);
}
}
return(null);
}
CSharpExpressionFinder CreateExpressionFinder(string fileName)
{
return(new CSharpExpressionFinder(ParserService.GetParseInformation(fileName, ProjectContent)));
}
public override bool HandleKeyword(ITextEditor editor, string word)
{
switch (word)
{
case "using":
if (IsInComment(editor))
{
return(false);
}
ParseInformation parseInfo = ParserService.GetParseInformation(editor.Document.Text, ProjectContent);
if (parseInfo != null)
{
IClass innerMostClass = parseInfo.CompilationUnit.GetInnermostClass(editor.Caret.Line, editor.Caret.Column);
if (innerMostClass == null)
{
ShowCompletion(CompletionItemProviderFactory.Create(LanguageProperties.CSharp, ExpressionContext.Namespace, ProjectContent), editor, ProjectContent);
return(true);
}
}
break;
case "as":
case "is":
if (IsInComment(editor))
{
return(false);
}
ShowCompletion(CompletionItemProviderFactory.Create(LanguageProperties.CSharp, ExpressionContext.Type, ProjectContent), editor, ProjectContent);
return(true);
case "override":
if (IsInComment(editor))
{
return(false);
}
ShowCompletion(new OverrideCompletionItemProvider(ProjectContent), editor, ProjectContent);
return(true);
case "new":
return(ShowNewCompletion(editor));
case "case":
if (IsInComment(editor))
{
return(false);
}
return(DoCaseCompletion(editor));
case "return":
if (IsInComment(editor))
{
return(false);
}
IMember m = GetCurrentMember(editor);
if (m != null)
{
return(ProvideContextCompletion(editor, m.ReturnType, ' '));
}
break;
}
return(false);
}
public bool InsightRefreshOnComma(ITextEditor editor, char ch, out IInsightWindow insightWindow, IProjectContent projectContent)
{
// Show MethodInsightWindow or IndexerInsightWindow
NRefactoryResolver r = new NRefactoryResolver(languageProperties);
Location cursorLocation = editor.Caret.Position;
if (r.Initialize(ParserService.GetParseInformation(editor.Document.Text, projectContent), cursorLocation.Y, cursorLocation.X))
{
TextReader currentMethod = r.ExtractCurrentMethod(editor.Document.Text);
if (currentMethod != null)
{
ILexer lexer = ParserFactory.CreateLexer(language, currentMethod);
Token token;
InspectedCall call = new InspectedCall(Location.Empty, null);
call.parent = call;
// HACK MINI PARSER
// The following code tries to find the current nested call until the caret position (= cursorLocation) is
// reached. call.commas contains all commas up to the caret position.
// DOES NOT HANDLE GENERICS CORRECTLY! This is sufficient for overload "search", because if we miss one
// overload it does not matter. But if we highlight the wrong parameter (see below) it DOES MATTER!
while ((token = lexer.NextToken()) != null && token.Kind != eofToken && token.Location < cursorLocation)
{
if (token.Kind == commaToken)
{
call.commas.Add(token.Location);
}
else if (token.Kind == openParensToken || token.Kind == openBracketToken || token.Kind == openBracesToken)
{
call = new InspectedCall(token.Location, call);
}
else if (token.Kind == closeParensToken || token.Kind == closeBracketToken || token.Kind == closeBracesToken)
{
call = call.parent;
}
}
int offset = LocationToOffset(editor, call.start);
if (offset >= 0 && offset < editor.Document.TextLength)
{
char c = editor.Document.GetCharAt(offset);
if (c == '(' || c == '[')
{
var insightProvider = new MethodInsightProvider(projectContent)
{
LookupOffset = offset
};
var insightItems = insightProvider.ProvideInsight(editor);
// find highlighted parameter
// see mini parser description above; the number of recognized parameters is the index
// of the current parameter!
var parameters = ResolveCallParameters(editor, call);
highlightedParameter = parameters.Count;
insightWindow = ShowInsight(editor, insightItems, parameters, ch);
return(insightWindow != null);
}
else
{
}
}
}
}
insightWindow = null;
return(false);
}