protected async void CreateCompletionData(CompletionContext context, SemanticModel semanticModel, int position, ITypeSymbol returnType, Accessibility seenAccessibility, SyntaxToken startToken, SyntaxToken tokenBeforeReturnType, bool afterKeyword, CancellationToken cancellationToken)
{
if (!TryDetermineOverridableProtocolMembers(semanticModel, tokenBeforeReturnType, seenAccessibility, out ISet <ISymbol> overridableMembers, cancellationToken))
{
return;
}
if (returnType != null)
{
overridableMembers = FilterOverrides(overridableMembers, returnType);
}
var currentType = semanticModel.GetEnclosingSymbolMD <INamedTypeSymbol> (startToken.SpanStart, cancellationToken);
var declarationBegin = afterKeyword ? startToken.SpanStart : position - 1;
foreach (var m in overridableMembers)
{
var pDict = ImmutableDictionary <string, string> .Empty;
bool isExplicit = false;
// if (member.DeclaringTypeDefinition.Kind == TypeKind.Interface) {
// foreach (var m in type.Members) {
// if (m.Name == member.Name && !m.ReturnType.Equals (member.ReturnType)) {
// isExplicit = true;
// break;
// }
// }
// }
// var resolvedType = type.Resolve (ext.Project).GetDefinition ();
// if (ext.Project != null)
// generator.PolicyParent = ext.Project.Policies;
var result = CSharpCodeGenerator.CreateProtocolMemberImplementation(null, null, currentType, currentType.Locations.First(), m, isExplicit, semanticModel);
string sb = result.Code.TrimStart();
int trimStart = result.Code.Length - sb.Length;
sb = sb.TrimEnd();
var lastRegion = result.BodyRegions.LastOrDefault();
var region = lastRegion == null ? null
: new CodeGeneratorBodyRegion(lastRegion.StartOffset - trimStart, lastRegion.EndOffset - trimStart);
var inlineDescription = GettextCatalog.GetString("Implement protocol member");
pDict = pDict.Add("InsertionText", sb.ToString());
pDict = pDict.Add("DescriptionMarkup", "- <span foreground=\"darkgray\" size='small'>" + inlineDescription + "</span>");
pDict = pDict.Add("Description", await GenerateQuickInfo(semanticModel, position, m, cancellationToken));
pDict = pDict.Add("DeclarationBegin", declarationBegin.ToString());
var tags = ImmutableArray <string> .Empty.Add("NewMethod");
var completionData = CompletionItem.Create(m.Name, sortText: m.ToSignatureDisplayString(), properties: pDict, rules: ProtocolCompletionRules, tags: tags, inlineDescription: inlineDescription);
context.AddItem(completionData);
}
}
static bool TryDetermineOverridableProtocolMembers(SemanticModel semanticModel, SyntaxToken startToken, Accessibility seenAccessibility, out ISet <ISymbol> overridableMembers, CancellationToken cancellationToken)
{
var result = new HashSet <ISymbol> ();
var containingType = semanticModel.GetEnclosingSymbolMD <INamedTypeSymbol> (startToken.SpanStart, cancellationToken);
if (containingType != null && !containingType.IsScriptClass && !containingType.IsImplicitClass)
{
if (containingType.TypeKind == TypeKind.Class || containingType.TypeKind == TypeKind.Struct)
{
var baseTypes = containingType.GetBaseTypesMD().Reverse().Concat(containingType.AllInterfaces);
foreach (var type in baseTypes)
{
if (cancellationToken.IsCancellationRequested)
{
overridableMembers = null;
return(false);
}
// Prefer overrides in derived classes
// RemoveOverriddenMembers (result, type, cancellationToken);
// Retain overridable methods
AddProtocolMembers(semanticModel, result, type, cancellationToken);
}
// Don't suggest already overridden members
// RemoveOverriddenMembers (result, containingType, cancellationToken);
}
}
// Filter based on accessibility
if (seenAccessibility != Accessibility.NotApplicable)
{
result.RemoveWhere(m => m.DeclaredAccessibility != seenAccessibility);
}
// Filter members that are already overriden - they're already part of 'override completion'
//ISet<ISymbol> realOverridableMembers;
//if (OverrideContextHandler.TryDetermineOverridableMembers (semanticModel, startToken, seenAccessibility, out realOverridableMembers, cancellationToken)) {
// result.RemoveWhere (m => realOverridableMembers.Any (m2 => IsEqualMember (m, m2)));
//}
overridableMembers = result;
return(overridableMembers.Count > 0);
}