private Regex /*!*/ TransformPattern(RubyEncoding encoding, RubyRegexOptions kc)
{
// We can reuse cached CLR regex if it was created for the same k-coding:
if (_cachedRegex != null && kc == _cachedKCode)
{
return(_cachedRegex);
}
string pattern;
if (kc != 0 || encoding == RubyEncoding.Binary)
{
pattern = _pattern.ToString(encoding.Encoding);
}
else
{
pattern = _pattern.ConvertToString();
}
Regex result;
try {
result = new Regex(RegexpTransformer.Transform(pattern, _options, out _hasGAnchor), ToClrOptions(_options));
} catch (Exception e) {
throw new RegexpError(e.Message);
}
_cachedKCode = kc;
_cachedRegex = result;
return(result);
}
internal static string Transform(string/*!*/ rubyPattern, RubyRegexOptions options) {
if (rubyPattern == "\\Af(?=[[:xdigit:]]{2}+\\z)") {
// pp.rb uses this pattern. The real fix requires cracking the entire regexp and so is left for later
return "\\Af(?=(?:[[:xdigit:]]{2})+\\z)";
}
RegexpTransformer transformer = new RegexpTransformer(rubyPattern);
return transformer.Transform();
}
internal static string Transform(string/*!*/ rubyPattern, RubyRegexOptions options, out bool hasGAnchor) {
if (rubyPattern == "\\Af(?=[[:xdigit:]]{2}+\\z)") {
// pp.rb uses this pattern. The real fix requires cracking the entire regexp and so is left for later
hasGAnchor = false;
return "\\Af(?=(?:[[:xdigit:]]{2})+\\z)";
}
RegexpTransformer transformer = new RegexpTransformer(rubyPattern);
var result = transformer.Transform();
hasGAnchor = transformer._hasGAnchor;
return result;
}
internal static string Transform(string/*!*/ rubyPattern, RubyRegexOptions options, out bool hasGAnchor) {
// TODO: surrogates (REXML uses this pattern)
if (rubyPattern == "^[\t\n\r -\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF]*$") {
hasGAnchor = false;
return "^(?:[\t\n\r -\uD7FF\uE000-\uFFFD]|[\uD800-\uDBFF][\uDC00-\uDFFF])*$";
}
RegexpTransformer transformer = new RegexpTransformer(rubyPattern);
var result = transformer.Transform();
hasGAnchor = transformer._hasGAnchor;
return result;
}
internal static string Transform(string /*!*/ rubyPattern, RubyRegexOptions options, out bool hasGAnchor)
{
if (rubyPattern == "\\Af(?=[[:xdigit:]]{2}+\\z)")
{
// pp.rb uses this pattern. The real fix requires cracking the entire regexp and so is left for later
hasGAnchor = false;
return("\\Af(?=(?:[[:xdigit:]]{2})+\\z)");
}
RegexpTransformer transformer = new RegexpTransformer(rubyPattern);
var result = transformer.Transform();
hasGAnchor = transformer._hasGAnchor;
return(result);
}