private MemberType GetSuggestedMemberType(int index, IReverseTokenizer revTokenizer, bool onlyVerifyEmptyContext = false)
{
var enumerator = revTokenizer.GetReversedTokens().Where(x => x.SourceSpan.Start.Index < index).GetEnumerator();
while (true)
{
if (!enumerator.MoveNext())
{
return(MemberType.None);
}
var tokInfo = enumerator.Current;
if (tokInfo.Equals(default(TokenInfo)) ||
tokInfo.Token.Kind == TokenKind.NewLine ||
tokInfo.Token.Kind == TokenKind.NLToken ||
tokInfo.Token.Kind == TokenKind.Comment)
{
continue; // linebreak
}
// Look for the token in the context map
ContextEntry contextEntry;
if (ContextCompletionMap.Instance.TryGetValue(tokInfo.Token.Kind, out contextEntry) ||
ContextCompletionMap.Instance.TryGetValue(tokInfo.Category, out contextEntry))
{
var matchContainer = new ContextPossibilityMatchContainer(contextEntry, this);
IEnumerable <ContextPossibility> matchingPossibilities;
if (matchContainer.TryMatchContextPossibility(tokInfo.SourceSpan.Start.Index, revTokenizer, out matchingPossibilities))
{
if (onlyVerifyEmptyContext)
{
return(MemberType.None);
}
else
{
MemberType result = MemberType.None;
foreach (var matchedPossible in matchingPossibilities)
{
if (matchedPossible.SetProviders.Length > 0)
{
result |= matchedPossible.SetProviders.Select(x => x.ReturningTypes).Aggregate((x, y) => x | y);
}
}
return(result);
}
}
return(MemberType.All);
}
else
{
// we don't have the token in our context map, so return
return(MemberType.None);
}
}
}
private bool DetermineContext(int index, IReverseTokenizer revTokenizer, List <MemberResult> memberList, bool onlyVerifyEmptyContext = false)
{
var enumerator = revTokenizer.GetReversedTokens().Where(x => x.SourceSpan.Start.Index < index).GetEnumerator();
while (true)
{
if (!enumerator.MoveNext())
{
return(false);
}
var tokInfo = enumerator.Current;
if (tokInfo.Equals(default(TokenInfo)) ||
tokInfo.Token.Kind == TokenKind.NewLine ||
tokInfo.Token.Kind == TokenKind.NLToken ||
tokInfo.Token.Kind == TokenKind.Comment)
{
continue; // linebreak
}
// Look for the token in the context map
ContextEntry contextEntry;
if (ContextCompletionMap.Instance.TryGetValue(tokInfo.Token.Kind, out contextEntry) ||
ContextCompletionMap.Instance.TryGetValue(tokInfo.Category, out contextEntry))
{
var matchContainer = new ContextPossibilityMatchContainer(contextEntry, this);
IEnumerable <ContextPossibility> matchingPossibilities;
if (matchContainer.TryMatchContextPossibility(tokInfo.SourceSpan.Start.Index, revTokenizer, out matchingPossibilities))
{
if (onlyVerifyEmptyContext)
{
return(matchingPossibilities.All(x => x.SingleTokens.Length == 0 && x.SetProviders.Length == 0));
}
else
{
foreach (var matchedPossible in matchingPossibilities)
{
LoadPossibilitySet(index, matchedPossible, memberList);
}
}
}
return(true);
}
else
{
// we don't have the token in our context map, so return
return(false);
}
}
}