/// <exception cref="Kirikiri.Tjs2.VariantException"></exception>
/// <exception cref="Kirikiri.Tjs2.TJSException"></exception>
private static void Compile(Variant[] param, RegExpNI _this)
{
string expr = param[0].AsString();
int flags;
if (param.Length >= 2)
{
string fs = param[1].AsString();
flags = RegExpNI.GetRegExpFlagsFromString(fs);
}
else
{
flags = RegExpNI.RegExpFlagToValue((char)0, 0);
}
if (expr.Length == 0)
{
expr = "(?:)";
}
// generate empty regular expression
try
{
int pflag = (flags & ~tjsflagsmask);
if (pflag != 0)
{
_this.RegEx = Sharpen.Pattern.Compile(expr, pflag);
}
else
{
_this.RegEx = Sharpen.Pattern.Compile(expr);
}
}
//catch (PatternSyntaxException e)
//{
// _this.RegEx = null;
// throw new TJSException(e.Message);
//}
catch (ArgumentException e)
{
_this.RegEx = null;
throw new TJSException(e.Message);
}
_this.mFlags = flags;
}
/// <exception cref="Kirikiri.Tjs2.VariantException"></exception>
/// <exception cref="Kirikiri.Tjs2.TJSException"></exception>
private static Dispatch2 GetResultArray(bool matched, RegExpNI _this, Matcher m)
{
Dispatch2 array = TJS.CreateArrayObject();
if (matched)
{
if (_this.RegEx == null)
{
Variant val = new Variant(string.Empty);
array.PropSetByNum(Interface.MEMBERENSURE | Interface.IGNOREPROP, 0, val, array);
}
else
{
if (m != null)
{
bool isMatch = m.Matches();
Variant val;
if (isMatch)
{
val = new Variant(m.Group(0));
array.PropSetByNum(Interface.MEMBERENSURE | Interface.IGNOREPROP, 0, val, array);
}
int size = m.GroupCount();
for (int i = 0; i < size; i++)
{
val = new Variant(m.Group(i + 1));
array.PropSetByNum(Interface.MEMBERENSURE | Interface.IGNOREPROP, i + 1, val, array
);
}
}
}
}
return array;
}
private static bool Match(string target, RegExpNI _this)
{
if (_this.RegEx == null)
{
return false;
}
int targlen = target.Length;
if (_this.mStart == targlen)
{
// Start already reached at end
return _this.RegEx == null;
}
else
{
// returns true if empty
if (_this.mStart > targlen)
{
// Start exceeds target's length
return false;
}
}
int searchstart = _this.mStart;
_this.mMatch = _this.RegEx.Matcher(Sharpen.Runtime.Substring(target, searchstart)
);
return _this.mMatch.Matches();
}
/// <exception cref="Kirikiri.Tjs2.VariantException"></exception>
/// <exception cref="Kirikiri.Tjs2.TJSException"></exception>
private static bool Exec(string target, RegExpNI _this)
{
bool matched = Match(target, _this);
Dispatch2 array = GetResultArray(matched, _this, _this.mMatch);
_this.mArray = new Variant(array, array);
_this.mInput = target;
if (!matched || _this.RegEx == null)
{
_this.mIndex = _this.mStart;
_this.mLastIndex = _this.mStart;
_this.mLastMatch = string.Empty;
_this.mLastParen = string.Empty;
_this.mLeftContext = Sharpen.Runtime.Substring(target, 0, _this.mStart);
}
else
{
_this.mIndex = _this.mStart + _this.mMatch.Start();
_this.mLastIndex = _this.mStart + _this.mMatch.End();
_this.mLastMatch = _this.mMatch.Group(0);
_this.mLastParen = _this.mMatch.Group(_this.mMatch.GroupCount() - 1);
_this.mLeftContext = Sharpen.Runtime.Substring(target, _this.mIndex);
_this.mRightContext = Sharpen.Runtime.Substring(target, _this.mLastIndex);
if ((_this.mFlags & globalsearch) != 0)
{
// global search flag changes the next search starting position.
int match_end = _this.mLastIndex;
_this.mStart = match_end;
}
}
return matched;
}
