public static object match(object thisObj, VsaEngine engine, object regExp)
{
string string_obj = Convert.ToString(thisObj);
RegExpObject regex_obj = Convert.ToRegExp(regExp);
bool global = regex_obj.global;
if (!global)
{
return(RegExpPrototype.exec(regex_obj, string_obj));
}
MatchCollection md = regex_obj.regex.Matches(string_obj);
uint n = (uint)md.Count;
Match lastMatch = md [(int)(n - 1)];
regex_obj.lastIndex = lastMatch.Index + 1;
RegExpConstructor.UpdateLastMatch(lastMatch, string_obj);
ArrayObject result = new ArrayObject();
result.length = n;
for (uint i = 0; i < n; i++)
{
result.elems [i] = md [(int)i].Value;
}
return(result);
}
public static object exec(object thisObj, object input)
{
RegExpObject re = Convert.ToRegExp(thisObj);
string str = null;
if (input == null)
{
RegExpConstructor ctr = RegExpConstructor.Ctr;
str = Convert.ToString(ctr.GetField("$_").GetValue("$_"));
}
else
{
str = Convert.ToString(input);
}
bool global = re.global;
int lastIndex = global ? (int)((double)re.lastIndex) : 0;
bool success = lastIndex >= 0 && lastIndex <= str.Length;
Match md = null;
if (success)
{
md = re.regex.Match(str, lastIndex);
success = md.Success;
}
if (!success)
{
re.lastIndex = 0;
return(DBNull.Value);
}
int index = md.Index;
int endIndex = index + md.Length;
if (global)
{
re.lastIndex = endIndex;
}
RegExpConstructor.UpdateLastMatch(md, str);
GroupCollection caps = md.Groups;
uint len = (uint)caps.Count;
RegExpMatch result = new RegExpMatch();
result.AddField("index", index);
result.AddField("input", input);
result.length = len;
for (uint j = 0; j < len; j++)
{
result.elems [j] = caps [(int)j].Value;
}
return(result);
}
public static RegExpObject compile(object thisObj, object source, object flags)
{
//
// Note: We always compile RegExp internals so all this method is useful for is for
// changing the properties of the otherwise immutable RegExp objects.
//
RegExpObject re = Convert.ToRegExp(thisObj);
string flag_str = Convert.ToString(flags);
re.Initialize(Convert.ToString(source),
flag_str.IndexOfAny(new char [] { 'i' }) > -1,
flag_str.IndexOfAny(new char [] { 'g' }) > -1,
flag_str.IndexOfAny(new char [] { 'm' }) > -1);
return(re);
}
public static int search(object thisObj, VsaEngine engine, object regExp)
{
string string_obj = Convert.ToString(thisObj);
RegExpObject regex_obj = Convert.ToRegExp(regExp);
Match md = regex_obj.regex.Match(string_obj);
/* Note: Microsoft's implementation updates the lastIndex property of regex_obj here, but
* ECMA-262, 15.5.4.12, NOTE 1 explicitely says not to do so. We do the ECMA-262 behavior. */
if (md.Success)
{
return(md.Index);
}
else
{
return(-1);
}
}