JSON 之 SuperObject(13): 关于 SO 与 SA 函数

通过 SuperObject 的公用函数 SO 实现一个 ISuperObject 接口非常方便;

前面都是给它一个字符串参数, 它的参数可以是任一类型甚至是常数数组.

SA 和 SO 都是返回一 ISuperObject;
SO 可以产生一个 stArray 类型的 ISuperObject, 但 SA 只会产生 stArray 类型的 ISuperObject;
SA 的参数也只能是常数数组.

---

unit Unit1;



interface



uses

  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,

  Dialogs, StdCtrls;



type

  TForm1 = class(TForm)

    Button1: TButton;

    Button2: TButton;

    procedure Button1Click(Sender: TObject);

    procedure Button2Click(Sender: TObject);

  end;



var

  Form1: TForm1;



implementation



{$R *.dfm}



uses SuperObject, TypInfo;



procedure TForm1.Button1Click(Sender: TObject);

var

  jo: ISuperObject;

begin

  jo := SO(['A',1, 'B',2.5, 'C','xyz', 'D',True]);

  ShowMessage(jo.AsJSon); // {"D":true,"C":"xyz","B":2.5,"A":1}

  {显示类型名}

  ShowMessage(GetEnumName(TypeInfo(TSuperType), Ord(jo.DataType))); // stObject



  jo := SO(3.14);

  ShowMessage(jo.AsJSon); // 3.14

  {显示类型名}

  ShowMessage(GetEnumName(TypeInfo(TSuperType), Ord(jo.DataType))); // stDouble



  jo := SA(['A',1, 'B',2.5, 'C','xyz', 'D',True]);

  ShowMessage(jo.AsJSon);

  {显示类型名}

  ShowMessage(GetEnumName(TypeInfo(TSuperType), Ord(jo.DataType))); // stArray

end;



//SA 再举例

procedure TForm1.Button2Click(Sender: TObject);

var

  jo,ja: ISuperObject;

begin

  ja := SA(['x','y','z']);

  

  jo := SO('{A:1, B:2}');

  jo['B'] := ja;



  ShowMessage(jo.AsJSon); // {"B":["x","y","z"],"A":1}

end;



end.