private void ProcessTokenOnPairMatching(PairToken pairToken, Stack <PairToken> openingTokens,
LinkedList <IToken> listToAdd)
{
if (pairToken.IsClosing && openingTokens.Count > 0 && !openingTokens.Peek().IsClosing)
{
var openToken = openingTokens.Pop();
if (openToken.Type == pairToken.Type)
{
AddPairTokenToLinkedList(listToAdd, openToken);
AddPairTokenToLinkedList(listToAdd, pairToken);
}
else
{
if (openToken.Type != AttributeType.Emphasis)
{
openingTokens.Push(openToken);
}
else
{
ProcessTokenOnPairMatching(pairToken, openingTokens, listToAdd);
}
}
}
else
{
openingTokens.Push(pairToken);
}
}
private Token GetCorrectPairToken(PairToken token, Token prevToken, Token nextToken)
{
if (IsFirstPairToken(prevToken, nextToken))
{
return(new PairToken(token.Type, token.Content, token.Length, true));
}
if (IsSecondPairToken(prevToken, nextToken))
{
return(new PairToken(token.Type, token.Content, token.Length, false));
}
return(new Token(TokenType.Text, token.Content, token.Length));
}
private IEnumerable <IToken> MergeAdjacentEmphasisDelimiters(IEnumerable <IToken> tokens)
{
var resultTokens = new LinkedList <IToken>();
var openingTokens = new Stack <PairToken>();
var nonMergeableOpeningTokens = new Stack <PairToken>();
PairToken lastOpeningToken = null;
PairToken lastClosingToken = null;
foreach (var token in tokens)
{
if (token is PairToken pairToken && token.Type == AttributeType.Emphasis)
{
if (!pairToken.IsClosing)
{
if (lastOpeningToken == null)
{
lastOpeningToken = pairToken;
}
else
{
lastOpeningToken = TryMergeOpeningTokens(
openingTokens,
nonMergeableOpeningTokens,
pairToken,
lastOpeningToken)
? null
: pairToken;
}
}
else
{
ProcessClosingTokenForMerging(
resultTokens,
nonMergeableOpeningTokens,
openingTokens,
pairToken,
ref lastOpeningToken,
ref lastClosingToken);
}
}