我想编译Rigi源代码,但编译时出现一些错误:
adt/object.h: At global scope:
adt/object.h:35:18: error: ‘class RigiObject RigiObject::RigiObject’ is inaccessible
adt/chararray.h:51:13: error: within this context
make: *** [cl_arcflags.o] Error 1
这是我们的两个文件。 object.h:
#ifndef OBJECTH
#define OBJECTH 1
#include <stdio.h>
#ifndef STREAM_H
#include <iostream>
#endif
#ifndef __STRING_H
#include <string.h>
#endif
#ifndef __STDLIB_H
#include <stdlib.h>
#endif
#ifndef _CCHEADER_H_
#include "CCheader.h"
#endif
extern char* indent_line(int);
class RigiObject;
typedef RigiObject* ObjectPtr;
#define Oberr(a) fprintf(stderr,"ERROR :: Generic Object Routine Called :: %s\n","a");
class RigiObject {
public:
RigiObject() {/*Oberr(RigiObject)*/;}
~RigiObject() {/*Oberr(~RigiObject)*/;}
// Routines that are really described by the Derived Classes
virtual int Printout(int) const
{Oberr(printout); return (int) 0;}
virtual unsigned int Hash() const
{Oberr(hash); return (unsigned int) 0; }
virtual RigiBool isEqual(void* a) const
{Oberr(isEqual); a = NIL;
(void) abort();
return (RigiBool) RigiFalse;}
virtual void Delete_class(ObjectPtr)
{Oberr(delete_type);}
virtual void* Create_class();
virtual void* Duplicate_class();
};
#endif
和chararray.h:
#ifndef CHARARRAYH
#define CHARARRAYH
#ifndef ARRAYOBIDH
#include "array.h"
#endif
#ifndef CHARTYPEH
#include "chartype.h"
#endif
class CharArray;
typedef CharArray* CharArrayPtr;
class CharArray : public Array {
int slot;
public:
// Routines to initialize and destroy the class.
CharArray(unsigned int size = CLTN_DEFAULT_CAPACITY);
CharArray(const CharArray&);
~CharArray();
// Functions that are Required to Use this Class as an Object
// .... all routines the same as in Class Array.......
// Routines that are required by a Collection class and derived classes
// of Collections. [See Array Class for these routines.]
virtual unsigned int size() const {return slot;}
// .... all routines the same as in Class Array.......
// Routines specific to this class
void operator=(const CharArray&);
RigiBool operator==(const CharArray&) const;
void Create(char*);
void Create(char*,int);
void Create(int, char*);
void Add(char*);
void Add(CharType&);
void Addob(RigiObject& ob)
{Array::Add(slot++,&ob);}
void Append(char*);
char* Concat(char);
int FindIndex(char*);
char* Remove()
{return ((CharTypePtr)Array::Remove(--slot))->string();}
ObjectPtr Pop()
{return (Array::Remove(--slot));}
ObjectPtr Look(int i)
{return (Array::At(i));}
void Empty();
virtual unsigned int Size() const
{return slot;}
char* Peek();
char* At(int);
};
#endif
代码有什么问题?
假设声明中的类型 RigiBool
RigiBool operator==(const CharArray&) const;
未在标题“array.h”“chartype.h”之一中定义,我认为您应该包含包含类型定义的标题,并且只是为了确保“ object.h”也是如此。
对于头文件使用类类型变量值(而不是指针和引用)的情况,建议包含包含类定义的头。否则,一个简单的前向声明就足够了。
类型
RigiBool
、RigiObject
和 ObjPtr
在 chararray.h 中不可用:您需要包含 object.h(如果 CCHeader.h不包含,则加上定义
RigiBool
的其他内容) ) -- 与 RigiBool
和RigiFalse
在 object.h
// somewhere at the top of chararray.h
#include "object.h"
注意:如果在
RigiObject
中定义了虚拟成员函数,则还应该声明析构函数virtual
注意:您已经在#include
d标头中包含了守卫,无需将它们放在
#include
指令周围——否则表明(在您的情况下错误)您正在进行条件编译//chararray.h
#ifndef CHARARRAYH
#define CHARARRAYH
#include "array.h"
#include "chartype.h"
...
//object.h
#ifndef OBJECTH
#define OBJECTH
#include <stdio.h>
#include <iostream>
#include <string.h>
#include <stdlib.h>
#include "CCheader.h"
...
RigiBool
是
RigiObject
的派生类?现在,当您在 RigiBool
中引用 chararray.h
时,它必须知道 RigiObject
基类,但 RigiObject
还需要了解 RigiBool
。所以你不能在不知道派生类RigiBool
的情况下声明基类。尝试在 RigiBool
中向前声明 object.h
是否有助于打破循环。