114 lines
1.8 KiB
C++
114 lines
1.8 KiB
C++
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#ifndef exception_h__
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#define exception_h__
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#include "setjmp.h"
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#include "stdlib.h"
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// #include "mystdlib.h"
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#define THROW_LOG__MAX_SIZE 1024
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typedef struct _jmp_fram{
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struct _jmp_fram *next;
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struct _jmp_fram *last;
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// map_def *mem;
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jmp_buf fram;
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}jmp_fram;
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typedef struct{
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size_t jmp_num;
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jmp_fram *jmp_head;
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int ret;
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char *file;
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int line;
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char log[THROW_LOG__MAX_SIZE];
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}exception_def;
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#define jmp_next(j) {\
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if((*j)){\
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(*j)->next=calloc(sizeof(jmp_fram),1);\
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(*j)->next->last=(*j);\
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(*j)=(*j)->next;\
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}else{\
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(*j)=calloc(sizeof(jmp_fram),1);\
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}\
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}
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#define jmp_last(j) {\
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if((*j)){\
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jmp_fram *l=(*j)->last;\
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/*if(l){\
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__mem_mov(&(l)->mem,&(*j)->mem);\
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}*/\
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free(*j);\
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(*j)=l;\
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if(*j){\
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(*j)->next=0;\
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}\
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}\
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}
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#define jmp_clear(j) {\
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if((*j)){\
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jmp_fram *l=(*j)->last;\
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/*__mem_clear(&(*j)->mem);*/\
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free(*j);\
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(*j)=l;\
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if(*j){\
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(*j)->next=0;\
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}\
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}\
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}
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/*
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try 的时候保存当前回溯点，如果setjmp返回不为0 则已经产生异常回溯了，
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这时最后一个回溯点的使命已经完成，所以删除最后一个回溯点
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*/
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#define __try(){\
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exception_def *f=exception();\
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jmp_fram **h=&f->jmp_head;\
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int ret;\
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jmp_next(h);\
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ret = setjmp(((*h)->fram));\
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if(ret){\
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jmp_clear(h);\
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}\
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f->ret=ret;\
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}
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#define try_ __try();if(exception()->ret==0){
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/*
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如果try一直执行到这里则不会产生回溯了，最后一个回溯点的使命也已经完成了，
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所以这里删除最后一个回溯点
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*/
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#define catch_ {\
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exception_def *f=exception();\
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jmp_fram **h=&f->jmp_head;\
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jmp_last(h);\
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}}else
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#define throw_(fmt,...) __throw(__FILE__,__LINE__,fmt,##__VA_ARGS__)
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exception_def *exception();
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void __throw(char *file,int line,const char *fmt,...);
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int test_add(int a,int b);
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#endif
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