private static IndexToken ScanForMatchingBrace(IndexTokenNode tokenNode)
{
TokenType matchingType = tokenNode.IndexToken.Token.Type.MatchingBraceType();
IndexTokenNode candidateToken = tokenNode;
bool matchForward = tokenNode.IndexToken.Token.Type.IsBraceStart();
int braceCounter = 0;
while (candidateToken != null)
{
if (candidateToken.IndexToken.Token.Type == matchingType) braceCounter--;
if (candidateToken.IndexToken.Token.Type == tokenNode.IndexToken.Token.Type) braceCounter++;
if (braceCounter == 0) return candidateToken.IndexToken;
candidateToken = matchForward ? candidateToken.Next() : candidateToken.Previous();
}
return null;
}
private static MatchingBracePair FindMatchingBracePair(IndexTokenNode tokenNode)
{
IndexToken matchingBrace = ScanForMatchingBrace(tokenNode);
if (matchingBrace == null) return new MatchingBracePair(tokenNode.IndexToken, null);
return new MatchingBracePair(tokenNode.IndexToken, matchingBrace);
}