private static IEnumerable <TokenMatch> MatchTokens(string template,
TokenzierContext context)
{
var lastChars = new RollingArray(3);
var elementIndex = -1;
char?isInString = null;
var stringEscape = false;
for (int i = 0; i < template.Length; i++)
{
var c = template[i];
lastChars.Add(c);
if (isInString.HasValue && context.CommentIntend == 0)
{
if (c == '\\')
{
stringEscape = true;
}
else if (stringEscape && c == isInString.Value)
{
stringEscape = false;
}
else if (!stringEscape && c == isInString.Value)
{
isInString = null;
}
}
else if (lastChars.StartToken(context.PrefixToken))
{
elementIndex = i - 1;
}
else if (elementIndex != -1 && lastChars.EndToken(context.SuffixToken))
{
var token = template.Substring(elementIndex, i - elementIndex + 1);
yield return(new TokenMatch(elementIndex, token));
elementIndex = -1;
}
else if (elementIndex != -1 && IsStringDelimiter(c) && context.CommentIntend == 0)
{
isInString = c;
}
}
if (isInString.HasValue && elementIndex != -1)
{
var token = template.Substring(elementIndex, template.Length - elementIndex);
yield return(new TokenMatch(elementIndex, token));
}
}
public RollingArrayEnumerator(RollingArray <T> array)
{
_array = array;
_startIndex = _array._writerIndex;
_index = 0;
}