• protobuf(fpc)


    protobuf(fpc)

    //cxg 2021-8-11 protobuf
    unit Unit1;
    
    {$mode objfpc}{$H+}
    
    interface
    
    uses
      protobuf_fpc, protobuf_fpc_types,
      Classes, SysUtils, Forms, Controls, Graphics, Dialogs, StdCtrls;
    
    type
      { TPeople }
      //message People {
      //  required Int32 Code = 1;
      //  required string FirstName = 2;
      //  optional string LastName = 3;
      //}
      TPeople = class(TSerializationObject) //message People
      private
        FCode: Int32;
        FFirstName: string;
        FLastName: string;
      protected
        procedure InternalRegisterProperty; override;
        procedure InternalInit; override;
      public
      published
        property Code:Int32 read FCode write FCode; //1;
        property FirstName:string read FFirstName write FFirstName;//2;
        property LastName:string read FLastName write FLastName;//3;
      end;
    
      TPeoples = specialize GSerializationObjectList<TPeople>;
    
      { TPeopleArr }
    
      TPeopleArr = class(TSerializationObject)
      private
        FPeopleArr: TPeoples;
      protected
        procedure InternalRegisterProperty; override;
        procedure InternalInit; override;
      published
        property PeopleArr: TPeoples read FPeopleArr write FPeopleArr;
      end;
    
    type
    
      { TForm1 }
    
      TForm1 = class(TForm)
        Button1: TButton;
        Button2: TButton;
        Memo1: TMemo;
        procedure Button1Click(Sender: TObject);
        procedure Button2Click(Sender: TObject);
      private
    
      public
    
      end;
    
    var
      Form1: TForm1;
    
    implementation
    
    {$R *.lfm}
    
    { TPeopleArr }
    
    procedure TPeopleArr.InternalRegisterProperty;
    begin
      inherited InternalRegisterProperty;
      RegisterProp('PeopleArr', 1);
    end;
    
    procedure TPeopleArr.InternalInit;
    begin
      inherited InternalInit;
      FPeopleArr := TPeoples.create;
    end;
    
    { TForm1 }
    
    procedure TForm1.Button1Click(Sender: TObject);
    var P, p2: TPeople;
      b: tbytesstream;
    begin
      p:=TPeople.Create;
      p.Code:=1;
      p.FirstName:='第一名称';
      p.LastName:='第二名称';
      b := tbytesstream.Create;
      p.SaveToStream(b);
      p.free;
    
      p2 := TPeople.Create;
      p2.LoadFromStream(b);
      b.free;
      memo1.Lines.Add(p2.Code.tostring);
      memo1.Lines.Add(p2.FirstName);
      memo1.Lines.Add(p2.LastName);
      p2.free;
    end;
    
    procedure TForm1.Button2Click(Sender: TObject);
    var
      arr, arr2: tpeoplearr;
      p, p2: TPeople;
      b: tbytesstream;
    begin
      arr := tpeoplearr.Create;
      p := arr.PeopleArr.AddItem;
      p.Code:=1;
      p.FirstName:='第一名称';
      p.LastName:='第二名称';
      p := arr.PeopleArr.AddItem;
      p.Code:=2;
      p.FirstName:='fname2';
      p.LastName:='lname2';
      b := tbytesstream.Create;
      arr.SaveToStream(b);
      arr.Free;
    
      arr2 := tpeoplearr.Create;
      arr2.LoadFromStream(b);
      b.free;
      for p2 in arr2.PeopleArr do
      begin
        memo1.Lines.Add(p2.Code.tostring);
        memo1.Lines.Add(p2.FirstName);
        memo1.Lines.Add(p2.LastName);
      end;
      arr2.free;
    end;
    
    { TPeople }
    
    procedure TPeople.InternalRegisterProperty;
    begin
      inherited InternalRegisterProperty;
      RegisterProp('Code', 1);
      RegisterProp('FirstName', 2);
      RegisterProp('LastName', 3);
    end;
    
    procedure TPeople.InternalInit;
    begin
      inherited InternalInit;
    end;
    
    end.
    

      

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  • 原文地址:https://www.cnblogs.com/hnxxcxg/p/15130764.html
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