public string GetCallTipTextAtPosition(string code, int position)
{
SyntaxTree syntaxTree = CSharpSyntaxTree.ParseText(code);
var options = new CSharpCompilationOptions(OutputKind.DynamicallyLinkedLibrary);
var compilation = CSharpCompilation.Create("output", options: options)
.AddSyntaxTrees(syntaxTree)
.AddReferences(MetadataReference.CreateFromFile(typeof(object).Assembly.Location),
MetadataReference.CreateFromFile(typeof(MongoSharpTextWriter).Assembly.Location),
MetadataReference.CreateFromFile(typeof(IEnumerable <int>).Assembly.Location),
MetadataReference.CreateFromFile(typeof(IQueryable).Assembly.Location),
MetadataReference.CreateFromFile(typeof(MongoDB.Bson.BsonDocument).Assembly.Location),
MetadataReference.CreateFromFile(typeof(MongoDB.Driver.MongoCollection).Assembly.Location),
MetadataReference.CreateFromFile(typeof(MongoDB.Driver.MongoClient).Assembly.Location)
);
var semanticModel = compilation.GetSemanticModel(syntaxTree);
SyntaxToken token = syntaxTree.GetRoot().FindToken(position);
SyntaxNode identifier = token.Parent;
SymbolInfo symbolInfo = semanticModel.GetSymbolInfo(identifier);
TypeInfo typeInfo = semanticModel.GetTypeInfo(identifier);
ITypeSymbol typeSymbol = typeInfo.Type;
if (typeSymbol == null && symbolInfo.Symbol != null && symbolInfo.Symbol is ITypeSymbol)
{
typeSymbol = (ITypeSymbol)symbolInfo.Symbol.OriginalDefinition;
}
var err = (from e in semanticModel.GetDiagnostics()
where (e.Severity == DiagnosticSeverity.Error || e.Severity == DiagnosticSeverity.Info) &&
position >= e.Location.SourceSpan.Start && position <= (e.Location.SourceSpan.Start + e.Location.SourceSpan.Length)
select e.ToString()).ToList();
if (err.Any())
{
return(err[0]);
}
if (typeSymbol != null)
{
string xmlComments = new XmlCommentsHelper().GetTypeComments(typeSymbol);
string symbolName = symbolInfo.Symbol == null ? "" : symbolInfo.Symbol.Name + " ";
string callTip = typeSymbol.ToString() + " " + symbolName + Environment.NewLine + " " + xmlComments;
callTip = callTip.TrimEnd(new[] { ' ', '\t', '\n' });
return(Environment.NewLine + " " + callTip + " " + Environment.NewLine);
}
else if (symbolInfo.Symbol is IMethodSymbol)
{
var method = ((IMethodSymbol)symbolInfo.Symbol);
string xmlComments = new XmlCommentsHelper().GetMethodComments(method);
string callTip = method.ReturnType.Name + " " + symbolInfo.Symbol.ToDisplayString() + Environment.NewLine + " " + xmlComments;
callTip = callTip.TrimEnd(new[] { ' ', '\t', '\n' });
return(Environment.NewLine + " " + callTip + " " + Environment.NewLine);
}
return(null);
}
public string GetCallTipTextAtPosition(string code, int position)
{
var syntaxTree = CSharpSyntaxTree.ParseText(code);
var semanticModel = GenerateSemanticModel(syntaxTree);
SyntaxToken token = syntaxTree.GetRoot().FindToken(position);
SyntaxNode identifier = token.Parent;
SymbolInfo symbolInfo = semanticModel.GetSymbolInfo(identifier);
TypeInfo typeInfo = semanticModel.GetTypeInfo(identifier);
ITypeSymbol typeSymbol = typeInfo.Type;
if (typeSymbol == null && symbolInfo.Symbol != null && symbolInfo.Symbol is ITypeSymbol)
{
typeSymbol = (ITypeSymbol)symbolInfo.Symbol.OriginalDefinition;
}
var err = (from e in semanticModel.GetDiagnostics()
where (e.Severity == DiagnosticSeverity.Error || e.Severity == DiagnosticSeverity.Info) &&
position >= e.Location.SourceSpan.Start && position <= (e.Location.SourceSpan.Start + e.Location.SourceSpan.Length)
select e.ToString()).ToList();
if (err.Any())
{
return(err[0]);
}
if (typeSymbol != null)
{
string xmlComments = new XmlCommentsHelper().GetTypeComments(typeSymbol);
string symbolName = symbolInfo.Symbol == null ? "" : symbolInfo.Symbol.Name + " ";
string callTip = typeSymbol.ToString() + " " + symbolName + Environment.NewLine + " " + xmlComments;
callTip = callTip.TrimEnd(new[] { ' ', '\t', '\n' });
return(Environment.NewLine + " " + callTip + " " + Environment.NewLine);
}
else if (symbolInfo.Symbol is IMethodSymbol)
{
var method = ((IMethodSymbol)symbolInfo.Symbol);
string xmlComments = new XmlCommentsHelper().GetMethodComments(method);
string callTip = method.ReturnType.Name + " " + symbolInfo.Symbol.ToDisplayString() + Environment.NewLine + " " + xmlComments;
callTip = callTip.TrimEnd(new[] { ' ', '\t', '\n' });
return(Environment.NewLine + " " + callTip + " " + Environment.NewLine);
}
return(null);
}
