public static int CountWhileNot(this string str, int start, CharSet chars, long max = int.MaxValue)
{
var index = start;
max = Math.Min(index + max, str.Length);
while (index < max && !chars.Contains(str[start]))
{
index += 1;
}
return index - start;
}
public static int CountWhileNot(this Subject subject, CharSet chars, long max = int.MaxValue)
{
var start = subject.Index;
var index = start;
max = Math.Min(start + max, subject.Text.Length);
while (index < max && !chars.Contains(subject.Text[index]))
{
index += 1;
}
return index - start;
}
public static string TakeWhile(this Subject subject, CharSet chars, long max = int.MaxValue)
{
var start = subject.Index;
var index = start;
max = Math.Min(start + max, subject.Text.Length);
while (index < max && chars.Contains(subject.Text[index]))
{
index += 1;
}
return index > start ? subject.Take(index - start) : "";
}
public CharSet(CharSet chars)
: this(chars.Chars)
{
}