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| /*
Destructors.h
*/
#pragma once
#ifndef EXTERN_C
#ifdef __cplusplus
#define EXTERN_C extern "C"
#else
#define EXTERN_C extern
#endif
#endif
#include "MyStack.h"
//----------------------------------------------------------------------------
//Macros
//Frame structure name
#if 0
#define FRAME_STRUCT_NAME_BEGIN FrameStruct42 ## __LINE__ //Doesn't work: appears as "FrameStruct42__LINE__"
#define FRAME_STRUCT_PTR_END NULL
#else
#define FRAME_STRUCT_NAME_BEGIN FrameStruct42
#define FRAME_STRUCT_PTR_END &FrameStruct42
#endif
//Debug macro to be used with the frame structure name
#if 0
#define INITIALIZE_FRAME2(name) InitializeFrameDebug(&name, #name)
#else
#define INITIALIZE_FRAME2(name) InitializeFrame(&name)
#endif
#define INITIALIZE_FRAME(name) INITIALIZE_FRAME2(name)
//Base structure contents (with additional field(s) in Debug mode)
#ifdef _DEBUG
#define BASE_FRAME {NULL, NULL, FALSE, FALSE, FALSE, 0}
#define BASE_FUNCTION_FRAME {NULL, NULL, TRUE, FALSE, FALSE, 0}
#define BASE_SWITCH_FRAME {NULL, NULL, FALSE, TRUE, FALSE, 0}
#define BASE_LOOP_FRAME {NULL, NULL, FALSE, TRUE, TRUE, 0}
#else
#define BASE_FRAME {NULL, NULL, FALSE, FALSE, FALSE}
#define BASE_FUNCTION_FRAME {NULL, NULL, TRUE, FALSE, FALSE}
#define BASE_SWITCH_FRAME {NULL, NULL, FALSE, TRUE, FALSE}
#define BASE_LOOP_FRAME {NULL, NULL, FALSE, TRUE, TRUE }
#endif
//Macros to be used in the source code
#ifdef __cplusplus
#define BEGIN_FUNCTION { CppFrame FRAME_STRUCT_NAME_BEGIN(TRUE, FALSE, FALSE);
#define SWITCH(expr) { CppFrame FRAME_STRUCT_NAME_BEGIN(FALSE, TRUE, FALSE); switch(expr){
#define BEGIN_LOOP { CppFrame FRAME_STRUCT_NAME_BEGIN(FALSE, TRUE, TRUE );
#define BEGIN { CppFrame FRAME_STRUCT_NAME_BEGIN(FALSE, FALSE, FALSE);
#define END_FUNCTION }
#define END_SWITCH }}
#define END_LOOP }
#define END }
#define RETURN return;
#define BREAK break;
#else
#define BEGIN_FUNCTION { struct frame FRAME_STRUCT_NAME_BEGIN = BASE_FUNCTION_FRAME; INITIALIZE_FRAME(FRAME_STRUCT_NAME_BEGIN); {
#define SWITCH(expr) { struct frame FRAME_STRUCT_NAME_BEGIN = BASE_SWITCH_FRAME; INITIALIZE_FRAME(FRAME_STRUCT_NAME_BEGIN); switch(expr){
#define BEGIN_LOOP { struct frame FRAME_STRUCT_NAME_BEGIN = BASE_LOOP_FRAME; INITIALIZE_FRAME(FRAME_STRUCT_NAME_BEGIN); {
#define BEGIN { struct frame FRAME_STRUCT_NAME_BEGIN = BASE_FRAME; INITIALIZE_FRAME(FRAME_STRUCT_NAME_BEGIN); {
#define END_FUNCTION } assert(IsTopFrameReturnLimit(FRAME_STRUCT_PTR_END)); UninitializeFrameNormal(FRAME_STRUCT_PTR_END); }
#define END_SWITCH } assert(IsTopFrameBreakLimit( FRAME_STRUCT_PTR_END)); UninitializeFrameNormal(FRAME_STRUCT_PTR_END); }
#define END_LOOP } assert(IsTopFrameBreakLimit( FRAME_STRUCT_PTR_END)); UninitializeFrameNormal(FRAME_STRUCT_PTR_END); }
#define END } UninitializeFrameNormal(FRAME_STRUCT_PTR_END); }
#define RETURN { UninitializeFrameReturn(FRAME_STRUCT_PTR_END); return; }
#define BREAK { UninitializeFrameBreak(FRAME_STRUCT_PTR_END); break; }
#endif
//----------------------------------------------------------------------------
//Data structures
struct frame
{
struct frame * pParentFrame;
struct st_stackOfDestructors *pDestructors;
BOOL bReturnLimit;
BOOL bBreakLimit;
//TRUE for loops because object is inside the loop,
//FALSE for switches because object is out of the switch
BOOL bPopOnBreak;
#ifdef _DEBUG
int cnt;
#endif
#ifdef __cplusplus
protected:
frame(void)
: pParentFrame(NULL), pDestructors(NULL)
{ }
#endif
};
//----------------------------------------------------------------------------
//Functions
EXTERN_C void InitializeFrame(struct frame *pFrame);
EXTERN_C void InitializeFrameDebug(struct frame *pFrame, char const *name);
EXTERN_C void UninitializeFrameNormal(struct frame *pFrame);
EXTERN_C void UninitializeFrameBreak(struct frame *pFrame);
EXTERN_C void UninitializeFrameReturn(struct frame *pFrame);
EXTERN_C BOOL IsTopFrameBreakLimit(struct frame *pFrame);
EXTERN_C BOOL IsTopFrameReturnLimit(struct frame *pFrame);
EXTERN_C void AddDestructor(void *pObj, DESTROYPROC proc);
EXTERN_C void FrameDebugIndent(void);
#ifdef __cplusplus
class CppFrame : private frame
{
public:
explicit CppFrame(BOOL bReturnLimit, BOOL bBreakLimit, BOOL bPopOnBreak)
{
this->bReturnLimit = bReturnLimit;
this->bBreakLimit = bBreakLimit;
this->bPopOnBreak = bPopOnBreak;
InitializeFrame(this);
}
CppFrame(frame const &src)
: frame(src)
{
InitializeFrame(this);
}
~CppFrame(void)
{
UninitializeFrameNormal(this); //In C++, it's always 'normal'.
}
};
#endif |
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