JSON 之 SuperObject(9): TSuperType

JSON 之 SuperObject(9): TSuperType




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;


//类型
procedure TForm1.Button1Click(Sender: TObject);
  function GetJsonType(I: ISuperObject): string;
  begin
    case I.DataType of
      stNull:    Result := 'stNull';
      stBoolean: Result := 'stBoolean';
      stDouble:  Result := 'stDouble';
      stInt:     Result := 'stInt';
      stObject:  Result := 'stObject';
      stArray:   Result := 'stArray';
      stString:  Result := 'stString';
      stMethod:  Result := 'stMethod';
    end;
  end;
var
  jo: ISuperObject;
begin
  jo := SO('{A:1, B:2}');
  ShowMessage(GetJsonType(jo)); {stObject}
  jo := SO;
  ShowMessage(GetJsonType(jo)); {stObject}


  jo := SO('abc');
  ShowMessage(GetJsonType(jo)); {stString}


  jo := SO(123);
  ShowMessage(GetJsonType(jo)); {stInt}
  jo := SO('123');
  ShowMessage(GetJsonType(jo)); {stInt}


  jo := SO(3.14);
  ShowMessage(GetJsonType(jo)); {stDouble}
  jo := SO('3.14');
  ShowMessage(GetJsonType(jo)); {stDouble}


  jo := SO(False);
  ShowMessage(GetJsonType(jo)); {stBoolean}


  jo := SO('[1,2,3,a,b,c]');
  ShowMessage(GetJsonType(jo)); {stArray}


  jo := TSuperObject.Create(stMethod);
  ShowMessage(GetJsonType(jo)); {stMethod}


  jo := SO('null');
  ShowMessage(GetJsonType(jo)); {stNull}
end;


//判断
procedure TForm1.Button2Click(Sender: TObject);
var
  jo: ISuperObject;
begin
  jo := SO('[]');


  if jo.DataType = stArray then ShowMessage('stArray');


  if ObjectIsType(jo, stArray) then ShowMessage('stArray');
end;


end.