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- /*
- ** $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 "lrotable.h"
- #include "platform.h"
- extern int debug_errorfb (lua_State *L);
- #if 0
- extern int pipe_create(lua_State *L);
- extern int pipe_read(lua_State *L);
- extern int pipe_unread(lua_State *L);
- extern int pipe_write(lua_State *L);
- #endif
- /*
- ** 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 report_traceback (lua_State *L) {
- // **Temp** lua_rawgeti(L, LUA_REGISTRYINDEX, G(L)->error_reporter);
- 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;
- }
- /*
- ** Catch all error handler for CB calls. This uses debug.traceback() to
- ** generate a full Lua traceback.
- */
- int luaN_traceback (lua_State *L) {
- if (lua_isstring(L, 1)) {
- lua_pushlightfunction(L, &debug_errorfb);
- lua_pushvalue(L, 1); /* pass error message */
- 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, report_traceback, 1); /* report with str as upval */
- luaN_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.
- */
- int luaN_call (lua_State *L, int narg, int res, int doGC) { // [-narg, +0, v]
- int status;
- int base = lua_gettop(L) - narg;
- lua_pushcfunction(L, luaN_traceback);
- lua_insert(L, base); /* put under args */
- status = lua_pcall(L, narg, (res < 0 ? LUA_MULTRET : res), base);
- lua_remove(L, base); /* remove traceback function */
- /* force a complete garbage collection if requested */
- if (doGC)
- lua_gc(L, LUA_GCCOLLECT, 0);
- 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_checkanyfunction(L, -1);
- luaL_unref(L, LUA_REGISTRYINDEX, (int) task_fn_ref);
- lua_pushinteger(L, prio);
- luaN_call (L, 1, 0, 1);
- }
- /*
- ** Schedule a Lua function for task execution
- */
- #include "lstate.h" /*DEBUG*/
- LUA_API int luaN_posttask( lua_State* L, int prio ) { // [-1, +0, -]
- if (!task_handle)
- task_handle = platform_task_get_id(do_task);
- if (!lua_isanyfunction(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;
- }
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