123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144 |
- /*
- ** $Id: ltm.c,v 2.8.1.1 2007/12/27 13:02:25 roberto Exp $
- ** Tag methods
- ** See Copyright Notice in lua.h
- */
- #define lnodemcu_c
- #define LUA_CORE
- #include "lua.h"
- #include <string.h>
- #include "lobject.h"
- #include "lstate.h"
- #include "lauxlib.h"
- #include "lgc.h"
- #include "lstring.h"
- #include "ltable.h"
- #include "ltm.h"
- #include "lnodemcu.h"
- #include "platform.h"
- /*
- ** Error Reporting Task. We can't pass a string parameter to the error reporter
- ** directly through the task interface the call is wrapped in a C closure with
- ** the error string as an Upval and this is posted to call the Lua reporter.
- */
- static int errhandler_aux (lua_State *L) {
- lua_getfield(L, LUA_REGISTRYINDEX, "onerror");
- if (!lua_isfunction(L, -1)) {
- lua_pop(L, 1);
- lua_getglobal(L, "print");
- }
- lua_pushvalue(L, lua_upvalueindex(1));
- lua_call(L, 1, 0); /* Using an error handler would cause an infinite loop! */
- return 0;
- }
- /*
- ** Error handler for luaL_pcallx(), called from the lua_pcall() with a single
- ** argument -- the thrown error. This plus depth=2 is passed to debug.traceback()
- ** to convert into an error message which it handles in a separate posted task.
- */
- static int errhandler (lua_State *L) {
- lua_getglobal(L, "debug");
- lua_getfield(L, -1, "traceback");
- if (lua_isfunction(L, -1)) {
- lua_insert(L, 1); /* insert tracback function above error */
- lua_pop(L, 1); /* dump the debug table entry */
- lua_pushinteger(L, 2); /* skip this function and traceback */
- lua_call(L, 2, 1); /* call debug.traceback and return it as a string */
- lua_pushcclosure(L, errhandler_aux, 1); /* report with str as upval */
- luaL_posttask(L, LUA_TASK_HIGH);
- }
- return 0;
- }
- /*
- ** Use in CBs and other C functions to call a Lua function. This includes
- ** an error handler which will catch any error and then post this to the
- ** registered reporter function as a separate follow-on task.
- */
- LUALIB_API int luaL_pcallx (lua_State *L, int narg, int nres) { // [-narg, +0, v]
- int status;
- int base = lua_gettop(L) - narg;
- lua_pushcfunction(L, errhandler);
- lua_insert(L, base); /* put under args */
- status = lua_pcall(L, narg, nres, base);
- lua_remove(L, base); /* remove traceback function */
- if (status != LUA_OK && status != LUA_ERRRUN) {
- lua_gc(L, LUA_GCCOLLECT, 0); /* call onerror directly if handler failed */
- lua_pushliteral(L, "out of memory");
- lua_pushcclosure(L, errhandler_aux, 1); /* report EOM as upval */
- luaL_posttask(L, LUA_TASK_HIGH);
- }
- return status;
- }
- static platform_task_handle_t task_handle = 0;
- /*
- ** Task callback handler. Uses luaN_call to do a protected call with full traceback
- */
- static void do_task (platform_task_param_t task_fn_ref, uint8_t prio) {
- lua_State* L = lua_getstate();
- if (prio < 0|| prio > 2)
- luaL_error(L, "invalid posk task");
- /* Pop the CB func from the Reg */
- //dbg_printf("calling Reg[%u]\n", task_fn_ref);
- lua_rawgeti(L, LUA_REGISTRYINDEX, (int) task_fn_ref);
- luaL_checkfunction(L, -1);
- luaL_unref(L, LUA_REGISTRYINDEX, (int) task_fn_ref);
- lua_pushinteger(L, prio);
- luaL_pcallx(L, 1, 0);
- }
- /*
- ** Schedule a Lua function for task execution
- */
- #include "lstate.h" /*DEBUG*/
- LUALIB_API int luaL_posttask( lua_State* L, int prio ) { // [-1, +0, -]
- if (!task_handle)
- task_handle = platform_task_get_id(do_task);
- if (!lua_isfunction(L, -1) || prio < LUA_TASK_LOW|| prio > LUA_TASK_HIGH)
- luaL_error(L, "invalid posk task");
- //void *cl = clvalue(L->top-1);
- int task_fn_ref = luaL_ref(L, LUA_REGISTRYINDEX);
- //dbg_printf("posting Reg[%u]=%p\n",task_fn_ref,cl);
- if(!platform_post(prio, task_handle, (platform_task_param_t)task_fn_ref)) {
- luaL_unref(L, LUA_REGISTRYINDEX, task_fn_ref);
- luaL_error(L, "Task queue overflow. Task not posted");
- }
- return task_fn_ref;
- }
- LUA_API void lua_createrotable (lua_State *L, ROTable *t, const ROTable_entry *e, ROTable *mt) {
- int i, j;
- lu_byte flags = ~0;
- const char *plast = (char *)"_";
- for (i = 0; e[i].key; i++) {
- if (e[i].key[0] == '_' && strcmp(e[i].key,plast)) {
- plast = e[i].key;
- lua_pushstring(L,e[i].key);
- for (j=0; j<TM_EQ; j++){
- if(rawtsvalue(L->top-1)==G(L)->tmname[i]) {
- flags |= cast_byte(1u<<i);
- break;
- }
- }
- lua_pop(L,1);
- }
- }
- t->next = (GCObject *)1;
- t->tt = LUA_TROTABLE;
- t->marked = LROT_MARKED;
- t->flags = flags;
- t->lsizenode = i;
- t->metatable = cast(Table *, mt);
- t->entry = cast(ROTable_entry *, e);
- }
|