/*
* See ECMA 15.5.4.15
*/
private static string js_substring(Context cx, string target, object [] args)
{
int length = target.Length;
double start = ScriptConvert.ToInteger(args, 0);
double end;
if (start < 0)
{
start = 0;
}
else if (start > length)
{
start = length;
}
if (args.Length <= 1 || args [1] == Undefined.Value)
{
end = length;
}
else
{
end = ScriptConvert.ToInteger(args [1]);
if (end < 0)
{
end = 0;
}
else if (end > length)
{
end = length;
}
// swap if end < start
if (end < start)
{
if (cx.Version != Context.Versions.JS1_2)
{
double temp = start;
start = end;
end = temp;
}
else
{
// Emulate old JDK1.0 java.lang.String.substring()
end = start;
}
}
}
return(target.Substring((int)start, ((int)end) - ((int)start)));
}
private static string js_slice(string target, object [] args)
{
if (args.Length != 0)
{
double begin = ScriptConvert.ToInteger(args [0]);
double end;
int length = target.Length;
if (begin < 0)
{
begin += length;
if (begin < 0)
{
begin = 0;
}
}
else if (begin > length)
{
begin = length;
}
if (args.Length == 1)
{
end = length;
}
else
{
end = ScriptConvert.ToInteger(args [1]);
if (end < 0)
{
end += length;
if (end < 0)
{
end = 0;
}
}
else if (end > length)
{
end = length;
}
if (end < begin)
{
end = begin;
}
}
return(target.Substring((int)begin, ((int)end) - ((int)begin)));
}
return(target);
}
/*
*
* See ECMA 15.5.4.6. Uses Java String.indexOf()
* OPT to add - BMH searching from jsstr.c.
*/
private static int js_indexOf(string target, object [] args)
{
string search = ScriptConvert.ToString(args, 0);
double begin = ScriptConvert.ToInteger(args, 1);
if (begin > target.Length)
{
return(-1);
}
else
{
if (begin < 0)
{
begin = 0;
}
return(target.IndexOf(search, (int)begin));
}
}
public override object ExecIdCall(IdFunctionObject f, Context cx, IScriptable scope, IScriptable thisObj, object [] args)
{
if (!f.HasTag(STRING_TAG))
{
return(base.ExecIdCall(f, cx, scope, thisObj, args));
}
int id = f.MethodId;
switch (id)
{
case ConstructorId_fromCharCode: {
int N = args.Length;
if (N < 1)
{
return("");
}
System.Text.StringBuilder sb = new System.Text.StringBuilder(N);
for (int i = 0; i != N; ++i)
{
sb.Append(ScriptConvert.ToUint16(args [i]));
}
return(sb.ToString());
}
case Id_constructor: {
string s = (args.Length >= 1) ? ScriptConvert.ToString(args [0]) : "";
if (thisObj == null)
{
// new String(val) creates a new String object.
return(new BuiltinString(s));
}
// String(val) converts val to a string value.
return(s);
}
case Id_toString:
case Id_valueOf:
// ECMA 15.5.4.2: 'the toString function is not generic.
return(RealThis(thisObj, f).m_Value);
case Id_toSource: {
string s = RealThis(thisObj, f).m_Value;
return("(new String(\"" + ScriptRuntime.escapeString(s) + "\"))");
}
case Id_charAt:
case Id_charCodeAt: {
// See ECMA 15.5.4.[4,5]
string target = ScriptConvert.ToString(thisObj);
double pos = ScriptConvert.ToInteger(args, 0);
if (pos < 0 || pos >= target.Length)
{
if (id == Id_charAt)
{
return("");
}
else
{
return(double.NaN);
}
}
char c = target [(int)pos];
if (id == Id_charAt)
{
return(Convert.ToString(c));
}
else
{
return((int)c);
}
}
case Id_indexOf:
return(js_indexOf(ScriptConvert.ToString(thisObj), args));
case Id_lastIndexOf:
return(js_lastIndexOf(ScriptConvert.ToString(thisObj), args));
case Id_split:
return(ImplSplit(cx, scope, ScriptConvert.ToString(thisObj), args));
case Id_substring:
return(js_substring(cx, ScriptConvert.ToString(thisObj), args));
case Id_toLowerCase:
// See ECMA 15.5.4.11
return(ScriptConvert.ToString(thisObj).ToLower());
case Id_toUpperCase:
// See ECMA 15.5.4.12
return(ScriptConvert.ToString(thisObj).ToUpper());
case Id_substr:
return(js_substr(ScriptConvert.ToString(thisObj), args));
case Id_concat:
return(js_concat(ScriptConvert.ToString(thisObj), args));
case Id_slice:
return(js_slice(ScriptConvert.ToString(thisObj), args));
case Id_bold:
return(Tagify(thisObj, "b", null, null));
case Id_italics:
return(Tagify(thisObj, "i", null, null));
case Id_fixed:
return(Tagify(thisObj, "tt", null, null));
case Id_strike:
return(Tagify(thisObj, "strike", null, null));
case Id_small:
return(Tagify(thisObj, "small", null, null));
case Id_big:
return(Tagify(thisObj, "big", null, null));
case Id_blink:
return(Tagify(thisObj, "blink", null, null));
case Id_sup:
return(Tagify(thisObj, "sup", null, null));
case Id_sub:
return(Tagify(thisObj, "sub", null, null));
case Id_fontsize:
return(Tagify(thisObj, "font", "size", args));
case Id_fontcolor:
return(Tagify(thisObj, "font", "color", args));
case Id_link:
return(Tagify(thisObj, "a", "href", args));
case Id_anchor:
return(Tagify(thisObj, "a", "name", args));
case Id_equals:
case Id_equalsIgnoreCase: {
string s1 = ScriptConvert.ToString(thisObj);
string s2 = ScriptConvert.ToString(args, 0);
return((id == Id_equals) ? s1.Equals(s2) : s1.ToUpper().Equals(s2.ToUpper()));
}
case Id_match:
case Id_search:
case Id_replace: {
RegExpActions actionType;
if (id == Id_match)
{
actionType = EcmaScript.NET.RegExpActions.Match;
}
else if (id == Id_search)
{
actionType = EcmaScript.NET.RegExpActions.Search;
}
else
{
actionType = EcmaScript.NET.RegExpActions.Replace;
}
return(cx.regExpProxy.Perform(cx, scope, thisObj, args, actionType));
}
}
throw new ArgumentException(Convert.ToString(id));
}