C++ 编译器无法识别成员函数和类型

Question

今天是奇怪的一天...... 有一个愚蠢的 hpp 文件和另一个愚蠢的 cpp 文件试图实现一个愚蠢的类。 他们在这里:

// HPP

#ifndef _WFQUEUE_MANAGER_PROXY_HPP_
#define _WFQUEUE_MANAGER_PROXY_HPP_

#include <iostream>
#include <string>

#include "workflow.hpp"
#include "wfqueue.hpp"

//-----------------------------------------------------------------------------
// Enum, struct, aliases
namespace middleware {
typedef struct {
    std::string proxy_ipaddr; /* IP address to manager */
    std::string proxy_port; /* Port to manager */
} WFProxyConfig;
}
//-----------------------------------------------------------------------------
// Class definitions
namespace middleware {
/*!
 * This class provides network interface to access the workflow queue. It is
 * important to notice that constructor is private in order to let a factory
 * perform such a work.
 */
class WFQueueManagerProxy : public WFQueue {
    /*!
     * To let factory build properly this object, we provide access to every
     * part of it.
     */
    friend class WFQueueProxyFactory;
private:
    /*!
     * Privately constructs the object. Default configuration with loopback
     * address and invalid port.
     */
    WFQueueManagerProxy();
public:
    /*!
     * Destructor
     */
    ~WFQueueManagerProxy();
    /*!
     * Enqueues a workflow.
     */
    void enqueue(const Workflow& workflow);
    /*!
     * Dequeues a workflow.
     */
    const Workflow& dequeue();
private:
    /*!
     * Privately constructs the object. Assigning configuration.
     */
    void ConfigureProxy(WFProxyConfig conf);
    /*!
     * Parameters for proxy.
     */
    WFProxyConfig _config;
}; /* WFQueueManagerProxy */
} /* middleware */

#endif

其他的

// CPP

#include "wfqueue_manager_proxy.hpp"

using namespace middleware;

//-----------------------------------------------------------------------------
// Constructors and destructor
/* Private constructor */
WFQueueManagerProxy::WFQueueManagerProxy() {
    (this->_config).proxy_ipaddr = "127.0.0.1";
    (this->_config).proxy_port = "0";
}
/* Destructor */
WFQueueManagerProxy::~WFQueueManagerProxy() {

}
//-----------------------------------------------------------------------------
// Public members
/* Enqueue */
void WFQueueManagerProxy::enqueue(const Workflow& workflow) {

}
/* Dequeue */
const Workflow& WFQueueManagerProxy::dequeue() {

}
//-----------------------------------------------------------------------------
// Private members
void WFQueueManagerProxy::ConfigureProxy(WFProxyConfig conf) {

}

有人请解释为什么 g++ 告诉我这个:

wfqueue_manager_proxy.cpp: In constructor ‘middleware::WFQueueManagerProxy::WFQueueManagerProxy()’: wfqueue_manager_proxy.cpp:32: error: ‘class middleware::WFQueueManagerProxy’ has no member named ‘_config’ wfqueue_manager_proxy.cpp:33: error: ‘class middleware::WFQueueManagerProxy’ has no member named ‘_config’ wfqueue_manager_proxy.cpp: At global scope: wfqueue_manager_proxy.cpp:51: error: variable or field ‘ConfigureProxy’ declared void wfqueue_manager_proxy.cpp:51: error: ‘WFProxyConfig’ was not declared in this scope

荒谬... 它不识别 typedef，也不识别私有(private)成员……而且，最重要的是……为什么 g++ 不识别试图将其视为变量的成员函数？？？？？？？？

我都试过了... PS(致谁看过我之前的帖子):我的虚拟机现在不是这个原因。我检查并确认没有虚拟硬盘损坏或与其他虚拟内存单元冲突。

Answer 1

只是猜测。不应该是吗

WFQueueManagerProxy::WFQueueManagerProxy() { 
    (this->_config).proxy_ipaddr = "127.0.0.1"; 
    (this->_config).proxy_port = "0"; 
}