Pascal (Lazarus/Delphi)

JSON UpdateNumber vs UpdateInt

Demonstrates UpdateNumber vs UpdateString. Pascal (Lazarus/Delphi)

program ChilkatDemo;

// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}

uses
  {$IFDEF UNIX}
  cthreads,
  {$ENDIF}
  SysUtils,
  CkDllLoader,
  Chilkat.JsonObject;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  json: TJsonObject;

begin
  json := TJsonObject.Create;

  //  If a number is too large for a 32-bit signed integer, then call UpdateNumber instead of UpdateInt.
  //  The large integer is passed to UpdateNumber as a string, but in the JSON it will be an integer.

  //  For example:
  json.UpdateNumber('largeNumber','6884556842');

  //  If the integer is small enough for a 32-bit signed integer, then use UpdateInt:
  json.UpdateInt('reasonableInt',123456);

  json.EmitCompact := False;
  WriteLn(json.Emit());

  //  The output:
  //  Notice the large number passed as a string does not have quotes in the JSON

  //  {
  //    "largeNumber": 6884556842,
  //    "reasonableInt": 123456
  //  }


  json.Free;

end;

// ---------------------------------------------------------------------------

begin

  try
    RunDemo;
  except
    on E: Exception do
      WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
  end;

  WriteLn;
  {$IFDEF MSWINDOWS}
  WriteLn('Press Enter to exit...');
  ReadLn;
  {$ENDIF}
end.