private static IEnumerable<PatternMatch> TryGetDotSeparatedPatternMatches(
PatternMatcher patternMatcher,
string[] dotSeparatedPatternComponents,
DeclaredSymbolInfo declaredSymbolInfo)
{
if (dotSeparatedPatternComponents == null || declaredSymbolInfo.FullyQualifiedContainerName == null || declaredSymbolInfo.Name == null)
{
return null;
}
// First, check that the last part of the dot separated pattern matches the name of the
// declared symbol. If not, then there's no point in proceeding and doing the more
// expensive work.
var symbolNameMatch = patternMatcher.MatchPattern(GetSearchName(declaredSymbolInfo), dotSeparatedPatternComponents.Last());
if (symbolNameMatch == null)
{
return null;
}
// So far so good. Now break up the container for the symbol and check if all
// the dotted parts match up correctly.
var totalMatch = symbolNameMatch.ToList();
var containerParts = declaredSymbolInfo.FullyQualifiedContainerName
.Split(DotArray, StringSplitOptions.RemoveEmptyEntries)
.ToList();
// -1 because the last part was checked against hte name, and only the rest
// of the parts are checked against the container.
if (dotSeparatedPatternComponents.Length - 1 > containerParts.Count)
{
// There weren't enough container parts to match against the pattern parts.
// So this definitely doesn't match.
return null;
}
for (int i = dotSeparatedPatternComponents.Length - 2, j = containerParts.Count - 1;
i >= 0;
i--, j--)
{
var dotPattern = dotSeparatedPatternComponents[i];
var containerName = containerParts[j];
var containerMatch = patternMatcher.MatchPattern(containerName, dotPattern);
if (containerMatch == null)
{
// This container didn't match the pattern piece. So there's no match at all.
return null;
}
totalMatch.AddRange(containerMatch);
}
// Success, this symbol's full name matched against the dotted name the user was asking
// about.
return totalMatch;
}
private static IEnumerable<PatternMatch> TryMatch(
string pattern,
string[] dotSeparatedPatternComponents,
PatternMatcher patternMatcher,
DeclaredSymbolInfo declaredSymbolInfo)
{
var matches1 = TryGetDotSeparatedPatternMatches(patternMatcher, dotSeparatedPatternComponents, declaredSymbolInfo);
var matches2 = patternMatcher.MatchPattern(GetSearchName(declaredSymbolInfo), pattern);
if (matches1 == null)
{
return matches2;
}
if (matches2 == null)
{
return matches1;
}
return matches1.Concat(matches2);
}