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better names for metamethods in debug information

This commit is contained in:
Roberto Ierusalimschy 2007-05-09 12:49:36 -03:00
parent 81fc3c4f45
commit becf19feef
1 changed files with 29 additions and 5 deletions
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34
ldebug.c
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@ -1,5 +1,5 @@
/*
** $Id: ldebug.c,v 2.34 2006/11/22 11:43:47 roberto Exp roberto $
** $Id: ldebug.c,v 2.35 2007/03/26 18:35:34 roberto Exp roberto $
** Debug Interface
** See Copyright Notice in lua.h
*/
@ -531,15 +531,39 @@ static const char *getobjname (lua_State *L, CallInfo *ci, int stackpos,
static const char *getfuncname (lua_State *L, CallInfo *ci, const char **name) {
TMS tm = 0;
Instruction i;
if ((isLua(ci) && ci->tailcalls > 0) || !isLua(ci - 1))
return NULL; /* calling function is not Lua (or is unknown) */
ci--; /* calling function */
i = ci_func(ci)->l.p->code[currentpc(L, ci)];
if (GET_OPCODE(i) == OP_CALL || GET_OPCODE(i) == OP_TAILCALL ||
GET_OPCODE(i) == OP_TFORLOOP)
return getobjname(L, ci, GETARG_A(i), name);
return NULL; /* else no useful name can be found */
switch (GET_OPCODE(i)) {
case OP_CALL:
case OP_TAILCALL:
case OP_TFORLOOP:
return getobjname(L, ci, GETARG_A(i), name);
case OP_GETGLOBAL:
case OP_SELF:
case OP_GETTABLE: tm = TM_INDEX; break;
case OP_SETGLOBAL:
case OP_SETTABLE: tm = TM_NEWINDEX; break;
case OP_EQ: tm = TM_EQ; break;
case OP_ADD: tm = TM_ADD; break;
case OP_SUB: tm = TM_SUB; break;
case OP_MUL: tm = TM_MUL; break;
case OP_DIV: tm = TM_DIV; break;
case OP_MOD: tm = TM_MOD; break;
case OP_POW: tm = TM_POW; break;
case OP_UNM: tm = TM_UNM; break;
case OP_LEN: tm = TM_LEN; break;
case OP_LT: tm = TM_LT; break;
case OP_LE: tm = TM_LE; break;
case OP_CONCAT: tm = TM_CONCAT; break;
default:
return NULL; /* else no useful name can be found */
}
*name = getstr(G(L)->tmname[tm]);
return "metamethod";
}