private AutoCompleteItem MakeAutoCompleteResponse(WantsType wants, ISymbol symbol, string completionText, bool includeOptionalParams = true)
{
var displayNameGenerator = new SnippetGenerator();
displayNameGenerator.IncludeMarkers = false;
displayNameGenerator.IncludeOptionalParameters = includeOptionalParams;
var response = new AutoCompleteItem();
response.CompletionText = completionText;
// TODO: Do something more intelligent here
response.DisplayText = displayNameGenerator.Generate(symbol);
if ((wants & WantsType.WantDocumentationForEveryCompletionResult) == WantsType.WantDocumentationForEveryCompletionResult)
{
response.Description = DocumentationConverter.ConvertDocumentation(symbol.GetDocumentationCommentXml(), "\n" /*_formattingOptions.NewLine*/);
}
if ((wants & WantsType.WantReturnType) == WantsType.WantReturnType)
{
response.ReturnType = ReturnTypeFormatter.GetReturnType(symbol);
}
if ((wants & WantsType.WantKind) == WantsType.WantKind)
{
response.Kind = symbol.GetKind();
}
// if (request.WantSnippet)
// {
// var snippetGenerator = new SnippetGenerator();
// snippetGenerator.IncludeMarkers = true;
// snippetGenerator.IncludeOptionalParameters = includeOptionalParams;
// response.Snippet = snippetGenerator.Generate(symbol);
// }
// if (request.WantMethodHeader)
// {
// response.MethodHeader = displayNameGenerator.Generate(symbol);
// }
return(response);
}
public async Task <object> Handle(DesignHub hub, InvokeArgs args)
{
int type = args.GetInt32(); //TODO: remove it
string fileName = args.GetString();
int line = args.GetInt32() - 1; //注意：前端传过来的值需要-1
int column = args.GetInt32() - 1;
string wordToComplete = args.GetString();
WantsType wants = WantsType.WantDocumentationForEveryCompletionResult | WantsType.WantKind | WantsType.WantReturnType; //暂默认
var completions = new HashSet <AutoCompleteItem>();
var document = hub.TypeSystem.Workspace.GetOpenedDocumentByName(fileName);
if (document == null)
{
throw new Exception($"Cannot find opened document: {fileName}");
}
var sourceText = await document.GetTextAsync();
var position = sourceText.Lines.GetPosition(new LinePosition(line, column));
var service = CompletionService.GetService(document);
var completionList = await service.GetCompletionsAsync(document, position);
if (completionList != null)
{
// Only trigger on space if Roslyn has object creation items
//if (request.TriggerCharacter == " " && !completionList.Items.Any(i => i.IsObjectCreationCompletionItem()))
//{
// return completions;
//}
// get recommened symbols to match them up later with SymbolCompletionProvider
var semanticModel = await document.GetSemanticModelAsync();
var recommendedSymbols = await Recommender.GetRecommendedSymbolsAtPositionAsync(semanticModel, position, hub.TypeSystem.Workspace);
foreach (var item in completionList.Items)
{
var completionText = item.DisplayText;
if (completionText.IsValidCompletionFor(wordToComplete))
{
var symbols = await item.GetCompletionSymbolsAsync(recommendedSymbols, document);
if (symbols.Any())
{
foreach (var symbol in symbols)
{
if (item.UseDisplayTextAsCompletionText())
{
completionText = item.DisplayText;
}
else if (item.TryGetInsertionText(out var insertionText))
{
completionText = insertionText;
}
else
{
completionText = symbol.Name;
}
if (symbol != null)
{
if ((wants & WantsType.WantSnippet) == WantsType.WantSnippet)
{
// foreach (var completion in MakeSnippetedResponses(request, symbol, completionText))
// {
// completions.Add(completion);
// }
}
else
{
completions.Add(MakeAutoCompleteResponse(wants, symbol, completionText));
}
}
}
// if we had any symbols from the completion, we can continue, otherwise it means
// the completion didn't have an associated symbol so we'll add it manually
continue;
}
// for other completions, i.e. keywords, create a simple AutoCompleteResponse
// we'll just assume that the completion text is the same
// as the display text.
var response = new AutoCompleteItem()
{
CompletionText = item.DisplayText,
DisplayText = item.DisplayText,
Snippet = item.DisplayText,
Kind = (wants & WantsType.WantKind) == WantsType.WantKind ? item.Tags.First() : null
};
completions.Add(response);
}
}
}
//todo: 处理overloads
return(completions
.OrderByDescending(c => c.CompletionText.IsValidCompletionStartsWithExactCase(wordToComplete))
.ThenByDescending(c => c.CompletionText.IsValidCompletionStartsWithIgnoreCase(wordToComplete))
.ThenByDescending(c => c.CompletionText.IsCamelCaseMatch(wordToComplete))
.ThenByDescending(c => c.CompletionText.IsSubsequenceMatch(wordToComplete))
.ThenBy(c => c.DisplayText, StringComparer.OrdinalIgnoreCase)
.ThenBy(c => c.CompletionText, StringComparer.OrdinalIgnoreCase)
.ToArray());
}