public virtual object ExecIdCall(IdFunctionObject f, Context cx, IScriptable scope, IScriptable thisObj, object [] args) { if (f.HasTag(FTAG)) { int methodId = f.MethodId; switch (methodId) { case Id_decodeURI: case Id_decodeURIComponent: { string str = ScriptConvert.ToString(args, 0); return(decode(str, methodId == Id_decodeURI)); } case Id_encodeURI: case Id_encodeURIComponent: { string str = ScriptConvert.ToString(args, 0); return(encode(str, methodId == Id_encodeURI)); } case Id_escape: return(js_escape(args)); case Id_eval: return(ImplEval(cx, scope, thisObj, args)); case Id_isFinite: { bool result; if (args.Length < 1) { result = false; } else { double d = ScriptConvert.ToNumber(args [0]); result = (!double.IsNaN(d) && d != System.Double.PositiveInfinity && d != System.Double.NegativeInfinity); } return(result); } case Id_isNaN: { // The global method isNaN, as per ECMA-262 15.1.2.6. bool result; if (args.Length < 1) { result = true; } else { double d = ScriptConvert.ToNumber(args [0]); result = (double.IsNaN(d)); } return(result); } case Id_isXMLName: { object name = (args.Length == 0) ? Undefined.Value : args [0]; XMLLib xmlLib = XMLLib.ExtractFromScope(scope); return(xmlLib.IsXMLName(cx, name)); } case Id_parseFloat: return(js_parseFloat(args)); case Id_parseInt: return(js_parseInt(args)); case Id_unescape: return(js_unescape(args)); case Id_uneval: { object value = (args.Length != 0) ? args [0] : Undefined.Value; return(ScriptRuntime.uneval(cx, scope, value)); } case Id_new_CommonError: // The implementation of all the ECMA error constructors // (SyntaxError, TypeError, etc.) return(BuiltinError.make(cx, scope, f, args)); } } throw f.Unknown(); }