public static int FindIndexOfOpeningToken(Token[] tokens, int startIndex, TokenType openingType)
{
var closingType = tokens[startIndex].Type;
int nestCount = 0;
for (int i = startIndex; i >= 0; i--)
{
if (tokens[i].Type == closingType)
{
++nestCount;
}
else if (tokens[i].Type == openingType)
{
--nestCount;
}
if (nestCount == 0)
{
return i;
}
}
return -1;
}
public bool TryGetToken(char ch, out Token token)
{
return Tokens.TryGetValue(ch, out token);
}