/// <summary>
/// Add an existing <see cref="RegexNegativeLookaheadAssertionNode"/> to the generator.
/// </summary>
/// <param name="group"><see cref="RegexNegativeLookaheadAssertionNode"/> to be added.</param>
/// <returns><see cref="RegexGenerator"/></returns>
/// <exception cref="NegativeLookaheadAssertionNotSupportedException">Negative lookahead assertion is not supported by <see cref="RegexLanguage"/>.</exception>
public RegexGenerator AddNegativeLookaheadAssertion(RegexNegativeLookaheadAssertionNode negativeLookaheadAssertion)
{
if (!IsNegativeLookaheadAssertionSupported)
{
throw new NegativeLookaheadAssertionNotSupportedException(RegexLanguage);
}
return(Add(negativeLookaheadAssertion));
}
public virtual string ToNegativeLookaheadAssertionString(RegexNegativeLookaheadAssertionNode negativeLookaheadAssertion)
{
if (!IsNegativeLookaheadAssertionSupported)
{
throw new NegativeLookaheadAssertionNotSupportedException(RegexLanguage);
}
if (negativeLookaheadAssertion == null)
{
throw new ArgumentNullException(nameof(negativeLookaheadAssertion));
}
var sb = new StringBuilder();
sb.Append(ToTokenString(RegexToken.NegativeLookaheadAssertionOpen))
.Append(negativeLookaheadAssertion.IsInnerNodeIncluded ? ToString(negativeLookaheadAssertion.InnerNode) : negativeLookaheadAssertion.Pattern)
.Append(ToTokenString(RegexToken.NegativeLookaheadAssertionClose));
return(AddQuantifier(sb.ToString(), negativeLookaheadAssertion.Minimum, negativeLookaheadAssertion.Maximum, negativeLookaheadAssertion.RegexQuantifierOption));
}
/// <summary>
/// Create and add <see cref="RegexNegativeLookaheadAssertionNode"/> to the generator, and include another <see cref="RegexNode"/> inside.
/// </summary>
/// <param name="innerNode">An existing <see cref="RegexNode"/> to be included.</param>
/// <param name="min">Optional minimum number of occurance.</param>
/// <param name="max">Optional maximum number of occurance.</param>
/// <param name="quantifierOption">Optional quantifier option.</param>
/// <returns><see cref="RegexGenerator"/></returns>
/// <exception cref="NegativeLookaheadAssertionNotSupportedException">Negative lookahead assertion is not supported by <see cref="RegexLanguage"/>.</exception>
public RegexGenerator AddNegativeLookaheadAssertion(RegexNode innerNode, int?min = null, int?max = null, RegexQuantifierOption quantifierOption = RegexQuantifierOption.Greedy)
{
var negativeLookaheadAssertion = new RegexNegativeLookaheadAssertionNode(innerNode, min, max, quantifierOption);
return(AddNegativeLookaheadAssertion(negativeLookaheadAssertion));
}
