锘??xml version="1.0" encoding="utf-8" standalone="yes"?>国产99久久久国产精品~~牛,久久综合日本熟妇,99久久99久久精品国产片果冻http://www.shnenglu.com/0xfff/archive/2012/11/04/194213.html寤?/dc:creator>寤?/author>Sat, 03 Nov 2012 16:10:00 GMThttp://www.shnenglu.com/0xfff/archive/2012/11/04/194213.htmlhttp://www.shnenglu.com/0xfff/comments/194213.htmlhttp://www.shnenglu.com/0xfff/archive/2012/11/04/194213.html#Feedback0http://www.shnenglu.com/0xfff/comments/commentRss/194213.htmlhttp://www.shnenglu.com/0xfff/services/trackbacks/194213.html涓鐩撮兘琚玣ft鍚稿紩钁楋紝緲諱簡涓嬨婁俊铏熻垏緋葷當銆嬶紝鐢ㄧ磾c++瀵︾従浜嗕竴閬嶏紝綆楁槸鎶婂師鐞嗗紕閫忎簡錛岀劧寰屾兂鍒頒簡澶氶爡寮忔摤鍚堬紝緲繪浉緲誨埌浜嗗収絀嶇┖闁擄紝閭勬泛娣哄湴浜嗚В涓涓嬪皬娉㈠垎鏋愶紝瑕哄緱鐢ㄩ毃絳嗕締鎶婂師鐞嗚閫忔亹鎬曠瘒騫呬笉澶狅紝閭勬槸鍏堝紕鍊嬫枃妾斾粈楹界殑鍚?br />閫欒!鍏堟斁騫懼嫉鍦栭枊鍊嬮牠錛屾湁鏅傞枔瑁滃叏鍐嶈鍚э紝欏ず閮ㄤ喚鐢ㄤ簡mgl



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c++鎴愬憳鍙橀噺鍙嶅皠http://www.shnenglu.com/0xfff/archive/2012/04/25/172716.html寤?/dc:creator>寤?/author>Wed, 25 Apr 2012 05:18:00 GMThttp://www.shnenglu.com/0xfff/archive/2012/04/25/172716.htmlhttp://www.shnenglu.com/0xfff/comments/172716.htmlhttp://www.shnenglu.com/0xfff/archive/2012/04/25/172716.html#Feedback0http://www.shnenglu.com/0xfff/comments/commentRss/172716.htmlhttp://www.shnenglu.com/0xfff/services/trackbacks/172716.html
銆銆鏈榪戯紙鍏跺疄涔熸湁涓孌墊椂闂翠簡錛夛紝鍦╟++欏圭洰涓渶瑕佺敤鍒扮被浼糺ava鐨勫弽灝勬満鍒訛紝鏃墮棿涔熸瘮杈冭刀錛屽彧鑳藉懆鍥寸湅鐪嬫湁娌℃湁鐜版垚鐨勫簱鍙敤浜嗭紝鎵懼埌鐨勮祫鏂欎篃涓嶇畻灝戯紝浣嗗鏁伴兘鏄叧浜庡姩鎬佸垱寤虹被鐨勶紝鏈夌偣鍍忓伐鍘傛ā寮忥紝鑰屾垜闇瑕佺殑錛屾槸鎶婂疄浣撶被涓殑灞炴у弽灝勫嚭鏉ャ傛渶鍚庯紝鎵懼埌浜嗕竴涓彨LibReflection鐨勪笢瑗匡紝铏界劧鍚庢潵榪樻槸娌$敤涓婅繖涓紝浣嗘槸紼嶅井鐪嬩簡涓涓嬩唬鐮侊紝榪樻槸鏈変笉灝戞敹鑾鳳紝鎵浠ュ氨鍦ㄨ繖閲岃褰曚笅鏉ヤ簡錛屽綋鍋氬涔狅紝涔熷綋鍋氬榪欎釜搴撶殑涓涓垎鏋愬惂銆?br style="widows: 2; text-transform: none; text-indent: 0px; letter-spacing: normal; font: 14px/21px verdana, 'courier new'; white-space: normal; orphans: 2; color: #000000; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px" />銆銆LibReflection鏄睘鎬у拰鍑芥暟鍙嶅皠閮芥湁瀹炵幇鐨勶紝鑰屾暣涓簱绔熺劧灝變竴涓猦鏂囦歡錛屾湰浜虹簿鍔涙湁闄愶紝鍙妸灞炴у弽灝勬娊鍙栧嚭鏉ワ紝鐩鎬俊紱誨疄闄呭簲鐢ㄤ篃鏈夎窛紱伙紝濡傛灉鏈変漢璺繃鐪嬪埌錛岃浣撹皡鍒媿鐮栦簡銆?br style="widows: 2; text-transform: none; text-indent: 0px; letter-spacing: normal; font: 14px/21px verdana, 'courier new'; white-space: normal; orphans: 2; color: #000000; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px" />銆銆閭d箞錛岄鍏堢湅涓涓嬩嬌鐢細

    TestClass inst;
    tat::tat_class *test_class = TestClass::get_class_ptr();
    std::map<std::string,tat::tat_field> field_map = test_class->get_fields();
    tat::tat_field test_vec_field = field_map.find("_vec_f")->second;
    std::vector<int> vec;
    test_vec_field.get(&inst,vec);
    vec.push_back(22);
    test_vec_field.set(&inst,vec);
    std::cout<<inst._vec_f[0]<<std::endl;

銆銆TestClass綾誨厛涓嶇粰鍑猴紝鍙嶆灝辨槸璇ョ被鏈変竴涓悕瀛椾負“_vec_f”鐨勫睘鎬э紝綾誨瀷鏄痵td::vector<int>錛岀劧鍚庤繖孌典唬鐮侀氳繃鍙嶅皠淇敼_vec_f鐨勫唴瀹廣傘傝嚦浜巘at_class鍜宼at_field錛岀浉淇$啛鎮塲ava鐨勪漢閮借兘鐚滃嚭鏄粈涔堜簡銆?br style="widows: 2; text-transform: none; text-indent: 0px; letter-spacing: normal; font: 14px/21px verdana, 'courier new'; white-space: normal; orphans: 2; color: #000000; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px" />銆銆鑾峰彇鍙婅緗竴涓疄渚嬬殑鎴愬憳鍙橀噺鐨勫間笉鏄毦浜嬶紝鐢ㄤ竴涓畯灝卞彲浠ヤ簡錛?br />
#define _OFFSET_(_Obj_Ty,_Key)                                                    \
    ((unsigned long)(&((_Obj_Ty *)0)->_Key))

 銆銆榪欎釜瀹忓簲璇ヤ篃涓嶉毦鐞嗚В錛屽氨鏄幏鍙栨垚鍛樺彉閲忕浉瀵瑰疄渚嬫寚閽堢殑鍋忕Щ鍊箋傝屽叧閿棶棰樻槸錛屽浣曢氳繃鍙橀噺鍚嶇О灝辮兘鏌ユ壘鍑鴻繖涓亸縐誨憿錛熷浣曞湪鍙橀噺鍒濆鍖栫殑鏃跺欏氨鑳借褰曚笅榪欎釜鍋忕Щ鍛紵鎴戜滑鍙互閫氳繃瀹忔潵澹版槑鍙橀噺錛岄偅涔堝0鏄庣殑鏃跺欏氨鍙互鍋氫竴浜涗簨鎯呬簡錛屼絾鍏蜂綋鍋氫簺浠涔堬紝榪樻槸娌″ご緇?br />銆銆榪欎釜闂鑷繁鎬濊冧簡涓孌墊椂闂達紝鏃犳灉銆傜劧鍚庣湅浜嗕竴涓嬪疄鐜幫紝娣辨劅鑷繁鐨勫熀紜榪樻病榪囧叧錛屽叾瀹炶鐧戒簡灝辨槸涓や釜涓滆タ錛氭瀯閫犲嚱鏁般侀潤鎬佹垚鍛樺彉閲忋?br />銆銆鎴戜滑鐨勭洰鏍囨槸寰堟槑紜殑錛岃鍋氬埌java鐨勬晥鏋滐紝緇撳悎涓婇潰閭d釜瀹忥紝涔熶笉闅炬兂璞″嚭Class鍜孎ield綾葷殑鏍峰瓙錛堣繖閲屾槸tat_class鍜宼at_field錛夛紝tat_class鏃犻潪灝辨槸淇濆瓨浜嗕竴涓猰ap錛宬ey鏄睘鎬х殑鍚嶇О錛寁alue鏄痶at_field錛岃嚦浜巘at_field灝辯畝鍗曚簡錛屾牳蹇冨氨鏄繚瀛樺唴瀛樼殑鍋忕Щ鍊鹼紝鍐嶆彁渚涙搷浣滃肩殑鎺ュ彛灝卞彲浠ヤ簡銆?br />銆銆鍏堟潵鐪嬬湅tat_class錛?br />
    class tat_class
    {
    private:
        std::map<std::string,tat_field> _field_map;
        std::string _key;
    public:
        std::map<std::string,tat_field> get_fields()
        {
            return this->_field_map;
        }
        tat_field get_field(std::string key)
        {
            std::map<std::string,tat_field>::iterator itr = _field_map.find(key);
            return (*itr).second;
        }
        void add_field(const tat_field &field)
        {
            _field_map.insert(std::pair<std::string,tat_field>(field.get_key(),field));
        }
    };

銆銆娌℃湁浠涔堢悊瑙d笂鐨勯毦鐐瑰惂銆?br />銆銆鐒跺悗鐪嬬湅tat_field錛?br />
    class tat_field
    {
    private:
        unsigned long _offset;
        std::string _key;
    public:
        tat_field(unsigned long offset,std::string key):_offset(offset),_key(key){}
        tat_field(const tat_field &field)
        {
            this->_offset = field._offset;
            this->_key = field._key;
        }
    public:
        template<typename _Obj_Ty,typename _Value_Ty>
        void get(_Obj_Ty *obj,_Value_Ty &value)
        {
            value = *((_Value_Ty *)((unsigned char *)obj + _offset));
        }
        template<typename _Obj_Ty,typename _Value_Ty>
        void set(_Obj_Ty *obj,const _Value_Ty &value)
        {
            *((_Value_Ty *)((unsigned char *)obj + _offset)) = value;
        }
        std::string get_key() const
        {
            return this->_key;
        }
    };

銆銆鍙橀噺鍊肩殑get鍜宻et鍑芥暟浣跨敤浜嗘ā鏉匡紝榪欐槸涓轟簡浣跨敤鐨勬椂鍊欒兘浣滅畝鍗曠殑綾誨瀷鎺ㄦ柇銆?br />銆銆鐒跺悗灝辨槸閲嶇偣浜嗭紝濡備綍鍦ㄥ0鏄庣被鐨勬椂鍊欏氨鎶妕at_class娉ㄥ叆鍛紵濡傚墠闈㈣鐨勶紝闈欐佹垚鍛樺彉閲忥細

#define CLASS_REGISTER(_Obj_Ty)                                                    \
public:                                                                            \
    static tat::tat_class * get_class_ptr()                                        \
    {                                                                            \
        static tat::tat_class __class_##_Obj_Key##__;                            \
        return &__class_##_Obj_Key##__;                                            \
    }

銆銆榪欎釜瀹忓仛浜嗕袱浠朵簨錛氱涓錛屽0鏄庨潤鎬佸嚱鏁癵et_class_ptr()錛岃繑鍥瀟at_class綾誨瀷錛岀浜岋紝褰撶劧灝辨槸鍒濆鍖杢at_class浜嗭紝鍥犱負鍚屾牱鏄潤鎬侊紝鎵浠ヤ笉鍚岀殑瀹炰緥灝卞叡浜簡銆?br />銆銆鎺ヤ笅鏉ユ槸鍙︿竴涓噸鐐癸紝濡備綍鍦ㄥ0鏄庢垚鍛樺彉閲忕殑鏃跺欐妸tat_field娉ㄥ叆鍒皌at_class涓紝榪樻槸鐢ㄥ畯瑙e喅錛?br />
#define FIELD_REGISTER(_Access,_Field_Ty,_Field_Key,_Obj_Ty)                    \
_Access:                                                                        \
    _Field_Ty _Field_Key;                                                        \
private:                                                                        \
    class __field_register_##_Field_Key##__                                        \
    {                                                                            \
    public:                                                                        \
        __field_register_##_Field_Key##__()                                        \
        {                                                                        \
            static tat::__field_register__ reg_##_Field_Key(                    \
                _Obj_Ty::get_class_ptr(),                                        \
                _OFFSET_(_Obj_Ty,_Field_Key),                                    \
                #_Field_Key);                                                    \
        }                                                                        \
    }_Field_Key##_register;

銆銆鍒嗘瀽榪欎釜瀹忥紝棣栧厛褰撶劧鏄0鏄庡彉閲忎簡錛涚劧鍚庡氨鏄竴涓縐樼殑綾伙細__field_register_##_Field_Key##__錛岃繖涓被灝卞彧鏈変竴涓瀯閫犲嚱鏁幫紝鏋勯犲嚱鏁伴噷闈㈠張鏄竴涓潤鎬佸彉閲忥紝綾誨瀷鏄痶at::__field_register__錛屽彲浠ユ兂璞″緱鍒幫紝鏃㈢劧tat_class宸茬粡鍙互澹版槑鍑烘潵浜嗭紝tat_field鑷劧涔熸病鏈夐毦搴︼紝浣嗗0鏄庢槸涓嶈凍澶熺殑錛岃繕闇瑕佹斁鍒皌at_class鐨刴ap閲岄潰鎵嶇畻瀹屾垚錛屽湪澹版槑涓涓彉閲忕殑鏃跺欙紝鑳藉仛浜嬬殑鍦版柟錛屾垜鍙兘鎯沖埌鏄瀯閫犲嚱鏁頒簡錛屾墍浠ュ氨鏈変簡鍒氬垰閭d釜紲炵鐨勭被錛岄偅涓被鐨勫敮涓浣滅敤灝辨槸鍏舵瀯閫犲嚱鏁幫紝鑰屾瀯閫犲嚱鏁伴噷闈㈠0鏄庨潤鎬佸彉閲忥紝鍒欐槸闃叉澶氭瀹炰緥鍖栫被甯︽潵鐨勫啑浣欐暟鎹紝紜繚涓涓垚鍛樺彉閲忓彧鏈変竴涓猼at_field錛?br />銆銆鍓╀笅鐨勫叧閿紝灝辨槸tat::__field_register__浜嗭細

    class __field_register__
    {
    public:
        __field_register__(tat_class *class_ptr,unsigned long offset,std::string key)
        {
            tat_field field(offset,key);
            class_ptr->add_field(field);
        }
    };

銆銆娌℃湁浠涔堢縐樼殑鍦版柟錛岃繖涓笢瑗垮氨榪欎箞瀹屾垚浜嗐?br />銆銆宸偣蹇樹簡TestClass鐨勫0鏄庯細

#include "fieldref.h"

class TestClass
{
public:
    TestClass(void);
    ~TestClass(void);

    CLASS_REGISTER(TestClass)
    FIELD_REGISTER(public,long,_long_f,TestClass)
    FIELD_REGISTER(public,int,_int_f,TestClass)
    FIELD_REGISTER(public,std::string,_str_f,TestClass)
    FIELD_REGISTER(public,std::vector<int>,_vec_f,TestClass)
};

銆銆濂藉惂錛屽鏋滆鍒板疄闄呭簲鐢ㄧ殑闂錛屾磼瀹剁‘瀹炴病鏈夎冭檻澶錛屽弽姝f祴璇曞嚱鏁拌兘璺戯紝緇撴灉涔熷浜嗭紝媧掑涔熷氨婊¤凍浜嗭紝灝卞崟綰殑褰撳仛鏄竴嬈″疄楠岋紝鎴栬呮槸瀛︿範鑰屽凡銆?/div>

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