Mercurial > mm7
view lib/swig/swigwin-2.0.11/Lib/swiginit.swg @ 2540:abc6a9d079b9
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author | a.parshin |
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date | Sat, 09 May 2015 12:55:58 +0200 |
parents | b3009adc0e2f |
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/* ----------------------------------------------------------------------------- * Type initialization: * This problem is tough by the requirement that no dynamic * memory is used. Also, since swig_type_info structures store pointers to * swig_cast_info structures and swig_cast_info structures store pointers back * to swig_type_info structures, we need some lookup code at initialization. * The idea is that swig generates all the structures that are needed. * The runtime then collects these partially filled structures. * The SWIG_InitializeModule function takes these initial arrays out of * swig_module, and does all the lookup, filling in the swig_module.types * array with the correct data and linking the correct swig_cast_info * structures together. * * The generated swig_type_info structures are assigned staticly to an initial * array. We just loop through that array, and handle each type individually. * First we lookup if this type has been already loaded, and if so, use the * loaded structure instead of the generated one. Then we have to fill in the * cast linked list. The cast data is initially stored in something like a * two-dimensional array. Each row corresponds to a type (there are the same * number of rows as there are in the swig_type_initial array). Each entry in * a column is one of the swig_cast_info structures for that type. * The cast_initial array is actually an array of arrays, because each row has * a variable number of columns. So to actually build the cast linked list, * we find the array of casts associated with the type, and loop through it * adding the casts to the list. The one last trick we need to do is making * sure the type pointer in the swig_cast_info struct is correct. * * First off, we lookup the cast->type name to see if it is already loaded. * There are three cases to handle: * 1) If the cast->type has already been loaded AND the type we are adding * casting info to has not been loaded (it is in this module), THEN we * replace the cast->type pointer with the type pointer that has already * been loaded. * 2) If BOTH types (the one we are adding casting info to, and the * cast->type) are loaded, THEN the cast info has already been loaded by * the previous module so we just ignore it. * 3) Finally, if cast->type has not already been loaded, then we add that * swig_cast_info to the linked list (because the cast->type) pointer will * be correct. * ----------------------------------------------------------------------------- */ #ifdef __cplusplus extern "C" { #if 0 } /* c-mode */ #endif #endif #if 0 #define SWIGRUNTIME_DEBUG #endif SWIGRUNTIME void SWIG_InitializeModule(void *clientdata) { size_t i; swig_module_info *module_head, *iter; int found, init; /* check to see if the circular list has been setup, if not, set it up */ if (swig_module.next==0) { /* Initialize the swig_module */ swig_module.type_initial = swig_type_initial; swig_module.cast_initial = swig_cast_initial; swig_module.next = &swig_module; init = 1; } else { init = 0; } /* Try and load any already created modules */ module_head = SWIG_GetModule(clientdata); if (!module_head) { /* This is the first module loaded for this interpreter */ /* so set the swig module into the interpreter */ SWIG_SetModule(clientdata, &swig_module); module_head = &swig_module; } else { /* the interpreter has loaded a SWIG module, but has it loaded this one? */ found=0; iter=module_head; do { if (iter==&swig_module) { found=1; break; } iter=iter->next; } while (iter!= module_head); /* if the is found in the list, then all is done and we may leave */ if (found) return; /* otherwise we must add out module into the list */ swig_module.next = module_head->next; module_head->next = &swig_module; } /* When multiple interpreters are used, a module could have already been initialized in a different interpreter, but not yet have a pointer in this interpreter. In this case, we do not want to continue adding types... everything should be set up already */ if (init == 0) return; /* Now work on filling in swig_module.types */ #ifdef SWIGRUNTIME_DEBUG printf("SWIG_InitializeModule: size %d\n", swig_module.size); #endif for (i = 0; i < swig_module.size; ++i) { swig_type_info *type = 0; swig_type_info *ret; swig_cast_info *cast; #ifdef SWIGRUNTIME_DEBUG printf("SWIG_InitializeModule: type %d %s\n", i, swig_module.type_initial[i]->name); #endif /* if there is another module already loaded */ if (swig_module.next != &swig_module) { type = SWIG_MangledTypeQueryModule(swig_module.next, &swig_module, swig_module.type_initial[i]->name); } if (type) { /* Overwrite clientdata field */ #ifdef SWIGRUNTIME_DEBUG printf("SWIG_InitializeModule: found type %s\n", type->name); #endif if (swig_module.type_initial[i]->clientdata) { type->clientdata = swig_module.type_initial[i]->clientdata; #ifdef SWIGRUNTIME_DEBUG printf("SWIG_InitializeModule: found and overwrite type %s \n", type->name); #endif } } else { type = swig_module.type_initial[i]; } /* Insert casting types */ cast = swig_module.cast_initial[i]; while (cast->type) { /* Don't need to add information already in the list */ ret = 0; #ifdef SWIGRUNTIME_DEBUG printf("SWIG_InitializeModule: look cast %s\n", cast->type->name); #endif if (swig_module.next != &swig_module) { ret = SWIG_MangledTypeQueryModule(swig_module.next, &swig_module, cast->type->name); #ifdef SWIGRUNTIME_DEBUG if (ret) printf("SWIG_InitializeModule: found cast %s\n", ret->name); #endif } if (ret) { if (type == swig_module.type_initial[i]) { #ifdef SWIGRUNTIME_DEBUG printf("SWIG_InitializeModule: skip old type %s\n", ret->name); #endif cast->type = ret; ret = 0; } else { /* Check for casting already in the list */ swig_cast_info *ocast = SWIG_TypeCheck(ret->name, type); #ifdef SWIGRUNTIME_DEBUG if (ocast) printf("SWIG_InitializeModule: skip old cast %s\n", ret->name); #endif if (!ocast) ret = 0; } } if (!ret) { #ifdef SWIGRUNTIME_DEBUG printf("SWIG_InitializeModule: adding cast %s\n", cast->type->name); #endif if (type->cast) { type->cast->prev = cast; cast->next = type->cast; } type->cast = cast; } cast++; } /* Set entry in modules->types array equal to the type */ swig_module.types[i] = type; } swig_module.types[i] = 0; #ifdef SWIGRUNTIME_DEBUG printf("**** SWIG_InitializeModule: Cast List ******\n"); for (i = 0; i < swig_module.size; ++i) { int j = 0; swig_cast_info *cast = swig_module.cast_initial[i]; printf("SWIG_InitializeModule: type %d %s\n", i, swig_module.type_initial[i]->name); while (cast->type) { printf("SWIG_InitializeModule: cast type %s\n", cast->type->name); cast++; ++j; } printf("---- Total casts: %d\n",j); } printf("**** SWIG_InitializeModule: Cast List ******\n"); #endif } /* This function will propagate the clientdata field of type to * any new swig_type_info structures that have been added into the list * of equivalent types. It is like calling * SWIG_TypeClientData(type, clientdata) a second time. */ SWIGRUNTIME void SWIG_PropagateClientData(void) { size_t i; swig_cast_info *equiv; static int init_run = 0; if (init_run) return; init_run = 1; for (i = 0; i < swig_module.size; i++) { if (swig_module.types[i]->clientdata) { equiv = swig_module.types[i]->cast; while (equiv) { if (!equiv->converter) { if (equiv->type && !equiv->type->clientdata) SWIG_TypeClientData(equiv->type, swig_module.types[i]->clientdata); } equiv = equiv->next; } } } } #ifdef __cplusplus #if 0 { /* c-mode */ #endif } #endif