private RegexMutation QuantifierRemoval(QuantifierNode node, RegexNode root)
{
var replacementNode = node.ChildNodes.FirstOrDefault();
var span = node.GetSpan();
int length;
RegexNode target;
if (node.Parent is LazyNode)
{
target = node.Parent;
length = span.Length + 1;
}
else
{
target = node;
length = span.Length;
}
return(new RegexMutation
{
OriginalNode = target,
ReplacementNode = replacementNode,
DisplayName = "Regex quantifier removal mutation",
Description = $"Quantifier \"{root.ToString().Substring(span.Start, length)}\" was removed at offset {span.Start}.",
ReplacementPattern = root.ReplaceNode(target, replacementNode).ToString()
});
}
private RegexMutation AnchorRemoval(AnchorNode node, RegexNode root)
{
var span = node.GetSpan();
return(new RegexMutation
{
OriginalNode = node,
DisplayName = "Regex anchor removal mutation",
Description = $"Anchor \"{root.ToString().Substring(span.Start, span.Length)}\" was removed at offset {span.Start}.",
ReplacementPattern = root.RemoveNode(node).ToString()
});
}
public string Dump()
{
var sb = new StringBuilder();
RegexNode node = this;
for (var i = 0; node != null; i++)
{
node = FindNodeById(i);
if (node != null)
{
sb.AppendLine(node.ToString());
}
}
return(sb.ToString());
}