/// <summary>
/// Add an existing <see cref="RegexPositiveLookbehindAssertionNode"/> to the generator.
/// </summary>
/// <param name="group"><see cref="RegexPositiveLookbehindAssertionNode"/> to be added.</param>
/// <returns><see cref="RegexGenerator"/></returns>
/// <exception cref="PositiveLookbehindAssertionNotSupportedException">Positive lookbehind assertion is not supported by <see cref="RegexLanguage"/>.</exception>
public RegexGenerator AddPositiveLookbehindAssertion(RegexPositiveLookbehindAssertionNode positiveLookbehnidAssertion)
{
if (!IsPositiveLookbehindAssertionSupported)
{
throw new PositiveLookbehindAssertionNotSupportedException(RegexLanguage);
}
return(Add(positiveLookbehnidAssertion));
}
public virtual string ToPositiveLookbehindAssertionString(RegexPositiveLookbehindAssertionNode positiveLookbehindAssertion)
{
if (!IsPositiveLookbehindAssertionSupported)
{
throw new PositiveLookbehindAssertionNotSupportedException(RegexLanguage);
}
if (positiveLookbehindAssertion == null)
{
throw new ArgumentNullException(nameof(positiveLookbehindAssertion));
}
var sb = new StringBuilder();
sb.Append(ToTokenString(RegexToken.PositiveLookbehindAssertionOpen))
.Append(positiveLookbehindAssertion.IsInnerNodeIncluded ? ToString(positiveLookbehindAssertion.InnerNode) : positiveLookbehindAssertion.Pattern)
.Append(ToTokenString(RegexToken.PositiveLookbehindAssertionClose));
return(AddQuantifier(sb.ToString(), positiveLookbehindAssertion.Minimum, positiveLookbehindAssertion.Maximum, positiveLookbehindAssertion.RegexQuantifierOption));
}
/// <summary>
/// Create and add <see cref="RegexPositiveLookbehindAssertionNode"/> 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="PositiveLookbehindAssertionNotSupportedException">Positive lookbehind assertion is not supported by <see cref="RegexLanguage"/>.</exception>
public RegexGenerator AddPositiveLookbehindAssertion(RegexNode innerNode, int?min = null, int?max = null, RegexQuantifierOption quantifierOption = RegexQuantifierOption.Greedy)
{
var positiveLookbehnidAssertion = new RegexPositiveLookbehindAssertionNode(innerNode, min, max, quantifierOption);
return(AddPositiveLookbehindAssertion(positiveLookbehnidAssertion));
}