Runtime方法的使用—Protocol、SEL篇

本篇主要是Protocol、SEL相关的方法调用

完整代码在这里

#pragma mark - IBAction
- (IBAction)logRunTimeAction:(id)sender {
    objc_property_attribute_t attrs[] = { { "T", "@\"NSString\"" }, { "&", "N" }, { "V", "" } };

    size_t objSize = class_getInstanceSize([_person class]);
    size_t allocSize = 2 * objSize;
    uintptr_t ptr = (uintptr_t)calloc(allocSize, 1);

    // Sel
    [self sel_getName:@selector(sel_getName:)];
    [self sel_registerName:"runtimeTestAction3"];
    [self sel_getUid:"runtimeTestAction3"];
    [self sel_isEqual:@selector(runtimeTestAction3) sel2:@selector(runtimeTestAction2)];

    // Protocol
    [self protocol_getName:protocol];
    [self protocol_getProperty:NSProtocolFromString(@"RuntimeBaseProtocol") name:"protocolString" isRequiredProperty:YES isInstanceProperty:YES];

    Protocol *testProtocol = [self objc_allocateProtocol:"TestProtocol"];
    [self protocol_addProperty:testProtocol name:"newProperty" attributes:attrs attributeCount:3 isRequiredProperty:YES isInstanceProperty:YES];
    [self protocol_addProtocol:testProtocol addition:protocol];
    [self protocol_addMethodDescription:testProtocol sel:@selector(runtimeTestAction3) types:"v@:" isRequiredMethod:NO isInstanceMethod:YES]; // 已注册的协议无法添加

    [self objc_registerProtocol:testProtocol];

    [self protocol_copyPropertyList:testProtocol];
    [self protocol_copyProtocolList:testProtocol];
    [self protocol_copyMethodDescriptionList:testProtocol isRequiredMethod:NO isInstanceMethod:YES];
    [self protocol_isEqual:testProtocol other:protocol];
    [self protocol_conformsToProtocol:testProtocol other:protocol];
}

#pragma mark - SEL
/** * 返回指定选择器指定的方法的名称 * *  @param sel 方法选择器 * *  @return 方法选择器名称 */
- (const char *)sel_getName:(SEL)sel {
    const char *selName = sel_getName(sel);
    NSLog(@"%s %s",__func__,selName);
    return selName;
}

/** * 在Objective-C Runtime系统中注册一个方法，将方法名映射到一个选择器，并返回这个选择器 * *  @param name 方法名 * *  @return 方法选择器 */
- (SEL)sel_registerName:(const char *)name {
    SEL sel = sel_registerName(name);
    [_person performSelector:sel withObject:nil afterDelay:0];
    return sel;
}

/** * 在Objective-C Runtime系统中注册一个方法 * *  @param name 方法名 * *  @return 方法选择器 */
- (SEL)sel_getUid:(const char *)name {
    SEL sel = sel_getUid(name);
    [_person performSelector:sel withObject:nil afterDelay:0];
    return sel;

}

/** * 比较两个选择器 * *  @param sel1 方法选择器1 *  @param sel2 方法选择器2 * *  @return 是否匹配 */
- (BOOL)sel_isEqual:(SEL)sel1 sel2:(SEL)sel2 {
    BOOL isEqual = sel_isEqual(sel1, sel2);
    if (isEqual) {
        NSLog(@"%s equal",__func__);
    }else{
        NSLog(@"%s unequal",__func__);
    }
    return isEqual;
}



#pragma mark - Protocol get: 协议；属性；
/** * 返回协议名 * *  @param protocol 协议 * *  @return 协议名 */
- (const char *)protocol_getName:(Protocol *)protocol {
    const char *name = protocol_getName(protocol);
// NSLog(@"%s %s",__func__,name);
    return name;
}

/** * 获取协议的指定属性 * *  @param protocol 协议 *  @param name 属性名 *  @param isRequiredProperty 是否为必须属性 *  @param isInstanceProperty 是否为实例属性 * *  @return 属性 */
- (objc_property_t)protocol_getProperty:(Protocol *)protocol name:(const char *)name isRequiredProperty:(BOOL)isRequiredProperty isInstanceProperty:(BOOL)isInstanceProperty{
    objc_property_t property = protocol_getProperty(protocol, name, isRequiredProperty, isInstanceProperty);
    NSLog(@"%s %s",__func__,property_getName(property));
    return property;
}

#pragma mark - Protocol add：属性；方法；协议；
/** * 为协议添加属性（只能向未注册的协议中添加） * *  @param protocol 协议 *  @param name 属性名 *  @param attributes 属性类型字符串 *  @param attributeCount 属性类型数量 *  @param isRequiredProperty 是否为必需属性 *  @param isInstanceProperty 是否为实例属性 */
- (void)protocol_addProperty:(Protocol *)protocol name:(const char *)name attributes:(const objc_property_attribute_t *)attributes attributeCount:(unsigned int)attributeCount isRequiredProperty:(BOOL)isRequiredProperty isInstanceProperty:(BOOL)isInstanceProperty {
    protocol_addProperty(protocol, name, attributes, attributeCount, isRequiredProperty, isInstanceProperty);
}
/** * 为协议添加方法（只能向未注册的协议中添加） * *  @param protocol 协议 *  @param sel 方法选择器 *  @param types 方法类型 *  @param isRequiredMethod 是否为必需方法 *  @param isInstanceMethod 是否为实例方法 */
- (void)protocol_addMethodDescription:(Protocol *)protocol sel:(SEL)sel types:(const char *)types isRequiredMethod:(BOOL)isRequiredMethod isInstanceMethod:(BOOL)isInstanceMethod{
    protocol_addMethodDescription(protocol, sel, types, isRequiredMethod, isInstanceMethod);
}

/** * 添加一个已注册的协议到一个未注册的协议中（只能向未注册的协议中添加） * *  @param protocol 协议 *  @param addition 被添加的已注册的协议 */
- (void)protocol_addProtocol:(Protocol*)protocol addition:(Protocol*)addition {
    protocol_addProtocol(protocol, addition);
}



#pragma mark - Protocol copy：协议列表；属性列表
/** * 获取协议中的属性列表 * *  @param protocol 协议 * *  @return 属性 */
- (objc_property_t *)protocol_copyPropertyList:(Protocol *)protocol {
    unsigned int outCount;
    objc_property_t *propertyList = protocol_copyPropertyList(protocol,&outCount);
    for (int i = 0; i < outCount; i++) {
        objc_property_t property = propertyList[i];
        NSLog(@"%s %s",__func__,property_getName(property));
    }
    return propertyList;
}

/** * 获取协议中遵循的协议列表 * *  @param protocol 协议 * *  @return 协议列表 */
- (Protocol **)protocol_copyProtocolList:(Protocol *)protocol {
    unsigned int outCount;
    Protocol **protocolList = protocol_copyProtocolList(protocol,&outCount);
    for (int i = 0; i < outCount; i++) {
        Protocol *protocol = protocolList[i];
        NSLog(@"%s %s",__func__,protocol_getName(protocol));
    }
    return protocolList;
}

/** * 获取协议的方法列表 * *  @param protocol 协议 *  @param isRequiredMethod 是否为必需方法 *  @param isInstanceMethod 是否为实例方法 * *  @return 方法列表 */
- (struct objc_method_description *)protocol_copyMethodDescriptionList:(Protocol *)protocol isRequiredMethod:(BOOL)isRequiredMethod isInstanceMethod:(BOOL)isInstanceMethod{
    unsigned int outCount;
    struct objc_method_description *methodList = protocol_copyMethodDescriptionList(protocol, isRequiredMethod, isInstanceMethod, &outCount);
    for (int i = 0; i < outCount; i++) {
        struct objc_method_description method = methodList[i];
        NSLog(@"%s %@",__func__,NSStringFromSelector(method.name));
    }
    return methodList;
}

#pragma mark - Protocol 判断
/** * 测试两个协议是否相等 * *  @param protocol 协议 *  @param other 另外一个协议 * *  @return 是否相等 */
- (BOOL)protocol_isEqual:(Protocol *)protocol other:(Protocol *)other {
    BOOL isEqual = protocol_isEqual(protocol, other);
    if (isEqual) {
        NSLog(@"%s %s equal %s ",__func__,protocol_getName(protocol),protocol_getName(other));
    }else{
        NSLog(@"%s %s unequal %s ",__func__,protocol_getName(protocol),protocol_getName(other));
    }
    return isEqual;
}

/** * 查看协议是否遵循了另一个协议 * *  @param protocol 协议 *  @param other 另外一个协议 * *  @return 是否遵循 */
- (BOOL)protocol_conformsToProtocol:(Protocol *)protocol other:(Protocol *)other {
    BOOL isConform = protocol_conformsToProtocol(protocol, other);
    if (isConform) {
        NSLog(@"%s %s conform %s ",__func__,protocol_getName(protocol),protocol_getName(other));
    }else{
        NSLog(@"%s %s unconform %s ",__func__,protocol_getName(protocol),protocol_getName(other));
    }
    return isConform;
}