NFA CreateNFA_without_edge()
{
NFA nfa ;
nfa = malloc (sizeof (struct Automaton));
assert(nfa);
/* 初始化唯一的两个状态点 */
nfa->start = nfa->end = allocStatus();
setStatusID (nfa->start, 1);
ensureFinalStatus (nfa->start);
/* 初始化nfa的Edge数组, 长度为0 */
nfa->edgeArray = Array_new (0, sizeOfEdge());
/* 初始化nfa的Status状态数组 */
nfa->statusArray = Array_new (1, sizeOfStatus());
Array_put (nfa->statusArray, 0, nfa->start);
return nfa ;
}
static struct dlstatus *loadModule(const char *path, const struct stat *sbuf, int mode)
{
NSObjectFileImage ofi = 0;
NSObjectFileImageReturnCode ofirc;
struct dlstatus *dls;
NSLinkEditErrors ler;
int lerno;
const char *errstr;
const char *file;
void (*init) (void);
ofirc = NSCreateObjectFileImageFromFile(path, &ofi);
switch (ofirc)
{
case NSObjectFileImageSuccess:
break;
case NSObjectFileImageInappropriateFile:
if (dyld_NSAddImage && dyld_NSIsSymbolNameDefinedInImage && dyld_NSLookupSymbolInImage)
{
if (isFlagSet(mode, RTLD_LOCAL))
{
warning("trying to open a .dylib with RTLD_LOCAL");
error("unable to open this file with RTLD_LOCAL");
return NULL;
}
}
else
{
error("opening this file is unsupported on this system");
return NULL;
}
break;
case NSObjectFileImageFailure:
error("object file setup failure");
return NULL;
case NSObjectFileImageArch:
error("no object for this architecture");
return NULL;
case NSObjectFileImageFormat:
error("bad object file format");
return NULL;
case NSObjectFileImageAccess:
error("can't read object file");
return NULL;
default:
error("unknown error from NSCreateObjectFileImageFromFile()");
return NULL;
}
dls = lookupStatus(sbuf);
if (!dls)
{
dls = allocStatus();
}
if (!dls)
{
error("unable to allocate memory");
return NULL;
}
dls->lib = 0;
if (ofirc == NSObjectFileImageInappropriateFile)
{
if ((dls->lib = dyld_NSAddImage(path, NSADDIMAGE_OPTION_RETURN_ON_ERROR)))
{
debug("Dynamic lib loaded at %ld", dls->lib);
ofi = MAGIC_DYLIB_OFI;
dls->module = MAGIC_DYLIB_MOD;
ofirc = NSObjectFileImageSuccess;
/* Although it is possible with a bit of work to modify this so it works and
functions with RTLD_NOW, I don't deem it necessary at the moment */
}
if (!(dls->module))
{
NSLinkEditError(&ler, &lerno, &file, &errstr);
if (!errstr || (!strlen(errstr)))
error("Can't open this file type");
else
error(errstr);
if ((dls->flags & DL_IN_LIST) == 0)
{
free(dls);
}
return NULL;
}
}
else
{
dls->module = NSLinkModule(ofi, path,
NSLINKMODULE_OPTION_RETURN_ON_ERROR |
NSLINKMODULE_OPTION_PRIVATE |
(isFlagSet(mode, RTLD_NOW) ? NSLINKMODULE_OPTION_BINDNOW : 0));
NSDestroyObjectFileImage(ofi);
if (dls->module)
{
dls->lib = get_mach_header_from_NSModule(dls->module);
}
}
if (!dls->module)
{
NSLinkEditError(&ler, &lerno, &file, &errstr);
if ((dls->flags & DL_IN_LIST) == 0)
{
free(dls);
}
error(errstr);
return NULL;
}
insertStatus(dls, sbuf);
dls = reference(dls, mode);
if ((init = dlsymIntern(dls, "__init", 0)))
{
debug("calling _init()");
init();
}
return dls;
}
static struct dlstatus * loadModule(const char * path,
const struct stat * sbuf, int mode)
{
NSObjectFileImage ofi = 0;
NSObjectFileImageReturnCode ofirc;
struct dlstatus * dls;
NSLinkEditErrors ler;
int lerno;
const char* errstr;
const char* file;
void (*init)(void);
ofirc = NSCreateObjectFileImageFromFile(path, &ofi);
switch (ofirc)
{
case NSObjectFileImageSuccess:
break;
case NSObjectFileImageInappropriateFile:
if (isFlagSet(mode, RTLD_LOCAL))
{
warning("trying to open a .dylib with RTLD_LOCAL");
error("unable to open this file with RTLD_LOCAL");
return NULL;
}
break;
case NSObjectFileImageFailure:
error("object file setup failure");
return NULL;
case NSObjectFileImageArch:
error("no object for this architecture");
return NULL;
case NSObjectFileImageFormat:
error("bad object file format");
return NULL;
case NSObjectFileImageAccess:
error("can't read object file");
return NULL;
default:
error("unknown error from NSCreateObjectFileImageFromFile()");
return NULL;
}
dls = lookupStatus(sbuf);
if (!dls)
{
dls = allocStatus();
}
if (!dls)
{
error("unable to allocate memory");
return NULL;
}
dls->lib=0;
if (ofirc == NSObjectFileImageInappropriateFile)
{
if ((dls->lib = NSAddImage(path, NSADDIMAGE_OPTION_RETURN_ON_ERROR)))
{
debug("Dynamic lib loaded at %ld",dls->lib);
ofi = MAGIC_DYLIB_OFI;
dls->module = MAGIC_DYLIB_MOD;
ofirc = NSObjectFileImageSuccess;
}
}
else
{
/* Should change this to take care of RLTD_LAZY etc */
dls->module = NSLinkModule(ofi, path,
NSLINKMODULE_OPTION_RETURN_ON_ERROR
| NSLINKMODULE_OPTION_PRIVATE
| NSLINKMODULE_OPTION_BINDNOW);
NSDestroyObjectFileImage(ofi);
}
if (!dls->module)
{
NSLinkEditError(&ler,&lerno,&file,&errstr);
free(dls);
error(errstr);
return NULL;
}
insertStatus(dls, sbuf);
if ((init = dlsymIntern(dls, "__init",0)))
{
debug("calling _init()");
init();
}
return dls;
}
