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new protocol for error handling

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This commit is contained in:
Roberto Ierusalimschy
2002-06-18 12:19:27 -03:00
parent 8f080fd683
commit 1dbe708aa8
13 changed files with 181 additions and 161 deletions
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14
lua.h
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@@ -1,5 +1,5 @@
/*
** $Id: lua.h,v 1.139 2002/06/13 13:39:55 roberto Exp roberto $
** $Id: lua.h,v 1.140 2002/06/13 13:44:50 roberto Exp roberto $
** Lua - An Extensible Extension Language
** Tecgraf: Computer Graphics Technology Group, PUC-Rio, Brazil
** http://www.lua.org mailto:info@lua.org
@@ -29,6 +29,9 @@
#define LUA_MULTRET (-1)
/* index for a traceback function in the registry */
#define LUA_TRACEBACK "_TRACEBACK"
/*
** pseudo-indices
*/
@@ -43,6 +46,7 @@
#define LUA_ERRSYNTAX 3
#define LUA_ERRMEM 4
#define LUA_ERRERR 5
#define LUA_ERRTHROW 6
typedef struct lua_State lua_State;
@@ -180,7 +184,7 @@ LUA_API void lua_setmetatable (lua_State *L, int objindex);
** `load' and `call' functions (load and run Lua code)
*/
LUA_API void lua_upcall (lua_State *L, int nargs, int nresults);
LUA_API int lua_pcall (lua_State *L, int nargs, int nresults, int errf);
LUA_API int lua_pcall (lua_State *L, int nargs, int nresults);
LUA_API int lua_load (lua_State *L, lua_Chunkreader reader, void *data,
const char *chunkname);
@@ -203,7 +207,7 @@ LUA_API void lua_setgcthreshold (lua_State *L, int newthreshold);
** miscellaneous functions
*/
LUA_API int lua_errorobj (lua_State *L);
LUA_API int lua_error (lua_State *L);
LUA_API int lua_next (lua_State *L, int index);
LUA_API int lua_getn (lua_State *L, int index);
@@ -220,8 +224,6 @@ LUA_API void *lua_newuserdata (lua_State *L, size_t size);
** ===============================================================
*/
#define lua_error(L,s) (lua_pushstring(L, s), lua_errorobj(L))
#define lua_newpointerbox(L,u) \
(*(void **)(lua_newuserdata(L, sizeof(void *))) = (u))
@@ -275,7 +277,7 @@ LUA_API int lua_pushupvalues (lua_State *L);
#define LUA_REFNIL (-1)
#define lua_ref(L,lock) ((lock) ? luaL_ref(L, LUA_REGISTRYINDEX) : \
(lua_error(L, "unlocked references are obsolete"), 0))
(lua_pushstring(L, "unlocked references are obsolete"), lua_error(L), 0))
#define lua_unref(L,ref) luaL_unref(L, LUA_REGISTRYINDEX, (ref))