Smart pascal source code


type
  TMyFunc = function(i: Integer): String;

procedure Func1(f: TMyFunc);
begin
  WriteLn('Func1');
  WriteLn(f(123));
end;

procedure Func2(f: TMyFunc);
begin
  WriteLn('Func2');
  Func1(f);
end;

Func2(IntToStr);

{<<< RESULT - CONSOLE LOG >>>
-----------------------------
Func2
Func1
123
-----------------------------
{<<<<<<<<< THE END >>>>>>>>>}

var TObject={
	$ClassName: "TObject",
	$Parent: null,
	ClassName: function (s) { return s.$ClassName },
	ClassType: function (s) { return s },
	ClassParent: function (s) { return s.$Parent },
	$Init: function () {},
	Create: function (s) { return s },
	Destroy: function (s) { for (var prop in s) if (s.hasOwnProperty(prop)) delete s.prop },
	Destroy$: function(s) { return s.ClassType.Destroy(s) },
	Free: function (s) { if (s!==null) s.ClassType.Destroy(s) }
}
function IntToStr(i) { return i.toString() }
var Exception={
	$ClassName: "Exception",
	$Parent: TObject,
	$Init: function () { FMessage="" },
	Create: function (s,Msg) { s.FMessage=Msg; return s }
}
function $New(c) { var i={ClassType:c}; c.$Init(i); return i }
function $CheckFunc(i,z) { if (i) return i; throw Exception.Create($New(Exception),"Function pointer is nil"+z); }
function WriteLn(value) {
    if (window.console) { window.console.log(value); } };
function Func2(f) {
   WriteLn("Func2");
   Func1(f);
};
function Func1(f$1) {
   WriteLn("Func1");
   WriteLn($CheckFunc(f$1,"")(123));
};

/* <<< main JS >>> */

   Func2(IntToStr)