Pascal (Lazarus/Delphi)

JSON AppendArray2 Example

Demonstrates the AppendArray2 function. 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.JsonArray,
  Chilkat.JsonObject;

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

procedure RunDemo;
var
  json: TJsonObject;
  jarr: TJsonArray;

begin
  json := TJsonObject.Create;
  json.Load('{ "name": "John", "marbles": 100 }');

  //  Append an empty array named "xyz"
  jarr := TJsonArray.Create;
  json.AppendArray2('xyz',jarr);

  WriteLn(json.Emit());
  //  Expected output is:   {"name":"John","marbles":100,"xyz":[]}

  //  Add elements to the array.
  jarr.AddStringAt(-1,'hello');
  jarr.AddIntAt(-1,256);

  WriteLn(json.Emit());
  //  Expected output is:  {"name":"John","marbles":100,"xyz":["hello",256]}


  json.Free;
  jarr.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.