Swift在58安居客房产实践

#import "WBListVC.h"
@import WBLOCO;@interface WBListVC ()<LCListViewDelegate>@property (nonatomic, strong) LCListView *listV;@end

import Foundation@objc public enum LCListItemSelectionStyle: Int { case single case multiple}public class LCListItemModel:NSObject { @objc public var list_selected:Bool = false @objc public var list_selection_style:LCListItemSelectionStyle = .single @objc public var text:String = "" @objc public var data:[LCListItemModel] = [] @objc public convenience init(modelWithDict: [String:Any]) { self.init() LCListItemModel.init(dict: modelWithDict) }

(lldb) po selfwarning: Swift error in fallback scratch context: <module-includes>:1:9: note: in file included from <module-includes>:1:#import "WBLOCO-umbrella.h" ^
/Users/xxxx/.../WBLOCO-umbrella.h:70:9: note: in file included from /Users/xxxx/.../Components-umbrella.h:70:#import "LGBaseNode.h" ^
/Users/xxxx/.../LGBaseNode.h:9:9: note: in file included from //Users/xxxx/.../LGBaseNode.h:9:#import "LGDefines.h"       ^error: could not build Objective-C module 'WBLOCO'<module-includes>:1:9: note: in file included from <module-includes>:1:#import "WBLOCO-umbrella.h"       

#import "WBLOCO.h"

#import <WBLOCO/WBLOCO.h>

// SEL和字符串转换FOUNDATION_EXPORT NSString *NSStringFromSelector(SEL aSelector);FOUNDATION_EXPORT SEL NSSelectorFromString(NSString *aSelectorName);// Class和字符串转换FOUNDATION_EXPORT NSString *NSStringFromClass(Class aClass);FOUNDATION_EXPORT Class __nullable NSClassFromString(NSString *aClassName);// Protocol和字符串转换FOUNDATION_EXPORT NSString *NSStringFromProtocol(Protocol *proto) NS_AVAILABLE(10_5, 2_0);FOUNDATION_EXPORT Protocol * __nullable NSProtocolFromString(NSString *namestr) NS_AVAILABLE(10_5, 2_0);

Class cls = NSClassFromString(@"ViewController");ViewController *vc = [[cls alloc] init];SEL selector = NSSelectorFromString(@"initWithData");[vc performSelector:selector];

import Cocoa@objc public class TestClass: NSObject {}

@objc(TestClass)public class TestClass: NSObject {}

Class cls = NSClassFromString(@"TestClass");

Foundation`NSClassFromString:-> 0x181a3c43c <+0>: pacibsp  0x181a3c440 <+4>: stp x28, x27, [sp, #-0x40]! 0x181a3c444 <+8>: stp x22, x21, [sp, #0x10] 0x181a3c448 <+12>: stp x20, x19, [sp, #0x20] ...... ...... 0x181a3c4f8 <+188>: bl 0x181d41f00 ; symbol stub for: objc_msgSend 0x181a3c4fc <+192>: mov x21, x0 0x181a3c500 <+196>: mov x0, x21 0x181a3c504 <+200>: bl 0x181d41ef0 ; symbol stub for: objc_lookUpClass

Class _Nullable MY_NSClassFromString(NSString *clsName) { if (!clsName) { return Nil; } NSUInteger classNameLength = [clsName length]; char buffer[1000]; if ([clsName getCString:buffer maxLength:1000 encoding:NSUTF8StringEncoding] && classNameLength == strlen(buffer)) { return objc_lookUpClass(buffer); } else if (classNameLength == 0) { return objc_lookUpClass([clsName UTF8String]); }
 for (int i = 0; i < classNameLength; i++) { if ([clsName characterAtIndex:i] == 0) { return Nil; } } return objc_lookUpClass([clsName UTF8String]);}

2021-06-23 21:13:58.750828+0800 HouseTest[25683:4936266] my_cls = TestClass

import Foundation
class TestClass: NSObject { var name = "我是One Pod"
}

import Foundation
class TestClass: NSObject { var name = "我是Tow Pod"
}

NSMutableDictionary *classNames = [NSMutableDictionary dictionary];[classNames setObject:@"HSListHeaderCell" forKey:@"list_header_data"];[classNames setObject:@"HSListFootCell" forKey:@"list_foot_data"];......
NSMutableDictionary *modelNames = [NSMutableDictionary dictionary];[classNames setObject:@"HSListHeaderModel" forKey:@"list_header_data"];[classNames setObject:@"HSListFootModel" forKey:@"list_foot_data"];

+(void)load{ [HSBusinessWidgetBindManager.sharedInstance setWidgetKey:@"list_header_data" widgetClassName:@"HSListHeaderWinget"];}+ (NSString *)cellName { return NSStringFromClass(HSListHeaderCell.class);}
+ (NSString *)cellModelName { return NSStringFromClass(HSListHeaderModel.class);}

typedef struct { const char * cls; const char * protocol;} _houselist_presenter_pair;

#define _HOUSELIST_SEGMENT "__DATA"#define _HOUSELIST_SECTION "__houselist"
#define HOUSELIST_PRESENTER_REGIST(PROTOCOL_NAME,CLASS_NAME)\__attribute__((used, section(_HOUSELIST_SEGMENT "," _HOUSELIST_SECTION))) static _houselist_presenter_pair _HOUSELIST_UNIQUE_PAIR = \{\#CLASS_NAME,\#PROTOCOL_NAME,\};\

HOUSELIST_PRESENTER_REGIST(list_header_data, HSHeaderWidget)

@interface HouseListPresenterKVManager : NSObject+ (instancetype)sharedManager;- (Class)classWithProtocol:(NSString *)key;@end

#import "HouseListDefines.h"#import "HouseListPresenterKVManager.h"#import <mach-o/getsect.h>#import <mach-o/loader.h>#import <mach-o/dyld.h>#import <dlfcn.h>
@interface HouseListPresenterKVManager ()
@property (nonatomic, strong) NSMutableDictionary<NSString*, NSString*> *presenterKV;
@end
@implementation HouseListPresenterKVManager
static HouseListPresenterKVManager *_instance;
+ (instancetype)sharedManager{ static dispatch_once_t onceToken; dispatch_once(&onceToken, ^{ _instance = [[HouseListPresenterKVManager alloc] init]; [self loadKVRelation]; }); return _instance;}
+ (void)loadKVRelation{#if DEBUG CFTimeInterval loadStart = CFAbsoluteTimeGetCurrent();#endif Dl_info info; int ret = dladdr((__bridge const void *)(self), &info); if (ret == 0) return;
#ifndef __LP64__ const struct mach_header *mhp = (struct mach_header *)info.dli_fbase; unsigned long size = 0; uint32_t *memory = (uint32_t *)getsectiondata(mhp, _HOUSELIST_SEGMENT, _HOUSELIST_SECTION, &size);#else /* defined(__LP64__) */ const struct mach_header_64 *mhp = (struct mach_header_64 *)info.dli_fbase; unsigned long size = 0; _houselist_presenter_pair *memory = (_houselist_presenter_pair *)getsectiondata(mhp, _HOUSELIST_SEGMENT, _HOUSELIST_SECTION, &size); /* defined(__LP64__) */#endif
#if DEBUG CFTimeInterval loadComplete = CFAbsoluteTimeGetCurrent(); NSLog(@"====>houselist_loadcost:%@ms", @(1000.0 * (loadComplete - loadStart))); if (size == 0) { NSLog(@"====>houselist_load:empty"); return; }#endif for (int idx = 0; idx < size / sizeof(_houselist_presenter_pair); ++idx) { _houselist_presenter_pair pair = (_houselist_presenter_pair)memory[idx]; [_instance.presenterKV setValue:[NSString stringWithCString:pair.cls encoding:NSUTF8StringEncoding] forKey:[NSString stringWithCString:pair.protocol encoding:NSUTF8StringEncoding]]; }#if DEBUG NSLog(@"====>houselist_callcost:%@ms", @(1000.0 * (CFAbsoluteTimeGetCurrent() - loadComplete)));#endif}
- (Class)classWithProtocol:(NSString *)key;{ NSString* protocolName = key; if (!ValidStr(protocolName)) { return [NSObject class]; } Class res = ValidStr(self.presenterKV[protocolName]) ? NSClassFromString(self.presenterKV[protocolName]) : [NSObject class]; return res ?: [NSObject class];}
- (NSMutableDictionary *)presenterKV{ if (!_presenterKV) { _presenterKV = [NSMutableDictionary dictionaryWithCapacity:10]; } return _presenterKV;}@end

@objc(BindKVCenter)public class BindKVCenter: NSObject { // 分类重写绑定 private class func enter() { }}

private extension BindKVCenter { @objc class func enter() { HouseListPresenterKVManager.shared().bindKV(withKey: "list_header_data", value: "HSHeaderWidget") }}
@objc(HSHeaderWidget)class HSHeaderWidget: NSObject {}

private extension BindKVCenter { @objc class func enter() { HouseListPresenterKVManager.shared().bindKV(withKey: "list_foot_data", value: "HSFootWidget") }}
@objc(HSFootWidget)class HSFootWidget: NSObject {}

Class currentClass = [BindKVCenter class]; if (currentClass) { typedef void (*fn)(id,SEL); unsigned int methodCount; Method *methodList = class_copyMethodList(object_getClass(currentClass), &methodCount); IMP imp = NULL; SEL sel = NULL; for (NSInteger i = 0; i < methodCount; i++) { Method method = methodList[i]; NSString *methodName = [NSString stringWithCString:sel_getName(method_getName(method)) encoding:NSUTF8StringEncoding]; if ([@"enter" isEqualToString:methodName]) { imp = method_getImplementation(method); sel = method_getName(method); if (imp != NULL) { fn f = (fn)imp; f(currentClass,sel); } } } free(methodList);    }