/// <summary>
/// Reads a tag or object variable until the end sequence, <tt>%}</tt> or <tt>}}</tt> respectively and advances the enumerator position
/// </summary>
/// <param name="sb">The string builder</param>
/// <param name="markupEnumerator">The string enumerator</param>
/// <param name="initialSearchChars">The character set to search for</param>
/// <exception cref="SyntaxException"></exception>
private static void ReadToEnd(StringBuilder sb, DotLiquid.Util.CharEnumerator markupEnumerator, HashSet <char> initialSearchChars)
{
var searchChars = initialSearchChars;
var isInQuotes = false;
while (markupEnumerator.AppendNext(sb))
{
char nextChar = markupEnumerator.Current;
if (searchChars.Contains(nextChar))
{
switch (nextChar)
{
case '\'':
isInQuotes = !isInQuotes;
searchChars = isInQuotes ? SearchSingleQuoteEnd : initialSearchChars;
break;
case '"':
isInQuotes = !isInQuotes;
searchChars = isInQuotes ? SearchDoubleQuoteEnd : initialSearchChars;
break;
case '}':
case '%':
if (markupEnumerator.Remaining > 0 && markupEnumerator.Next == '}')
{
markupEnumerator.AppendNext(sb);
return;
}
break;
}
}
}
;
if (markupEnumerator.Remaining == 0) //Somehow we reached the end without finding the end character(s)
{
if (initialSearchChars == SearchQuoteOrTagEnd)
{
throw new SyntaxException(Liquid.ResourceManager.GetString("BlockTagNotTerminatedException"), sb.ToString(), Liquid.TagEnd);
}
else
{
throw new SyntaxException(Liquid.ResourceManager.GetString("BlockVariableNotTerminatedException"), sb.ToString(), Liquid.VariableEnd);
}
}
}
/// <summary>
/// Reads a fixed number of characters and advances the enumerator position
/// </summary>
/// <param name="markupEnumerator">The string enumerator</param>
/// <param name="markupLength">The number of characters to read</param>
/// <returns></returns>
private static string ReadChars(DotLiquid.Util.CharEnumerator markupEnumerator, int markupLength)
{
var sb = new StringBuilder(markupLength);
for (var i = 0; i < markupLength; i++)
{
markupEnumerator.AppendNext(sb);
}
return(sb.ToString());
}
