public (List <RhetosSignature> signatures, int?activeSignature, int?activeParameter) GetSignatureHelpAtPosition(LineChr lineChr)
{
var analysis = GetAnalysis(lineChr);
if (analysis.KeywordToken == null || analysis.IsAfterAnyErrorLine(lineChr))
{
return(null, null, null);
}
var signaturesWithDocumentation = conceptQueries.GetSignaturesWithDocumentation(analysis.KeywordToken.Value);
var validConcepts = analysis.GetValidConceptsWithActiveParameter();
if (!validConcepts.Any())
{
return(signaturesWithDocumentation, null, null);
}
var sortedConcepts = validConcepts
.Select(valid =>
(
valid.conceptType,
valid.activeParamater,
parameterCount: ConceptInfoType.GetParameters(valid.conceptType).Count,
documentation: signaturesWithDocumentation.Single(sig => sig.ConceptInfoType == valid.conceptType)
))
.OrderBy(valid => valid.activeParamater >= valid.parameterCount)
.ThenBy(valid => valid.parameterCount)
.ThenBy(valid => valid.conceptType.Name)
.ToList();
var activeParameter = sortedConcepts.First().activeParamater;
return(sortedConcepts.Select(sorted => sorted.documentation).ToList(), 0, activeParameter);
}
private RhetosSignature CreateRhetosSignature(Type conceptInfoType)
{
var prefix = " ";
var signature = ConceptInfoType.SignatureDescription(conceptInfoType);
var documentation = $"{prefix}* defined by {conceptInfoType.FullName}";
var xmlDocumentation = xmlDocumentationProvider.GetDocumentation(conceptInfoType, prefix);
if (!string.IsNullOrEmpty(xmlDocumentation))
{
documentation = $"{xmlDocumentation}\n{documentation}";
}
return(new RhetosSignature()
{
ConceptInfoType = conceptInfoType,
Parameters = ConceptInfoType.GetParameters(conceptInfoType),
Signature = signature,
Documentation = documentation
});
}