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@ -1,5 +1,5 @@ |
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/*
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** $Id: lvm.c,v 2.158 2013/04/16 18:43:05 roberto Exp roberto $ |
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** $Id: lvm.c,v 2.159 2013/04/25 15:59:42 roberto Exp roberto $ |
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** Lua virtual machine |
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** See Copyright Notice in lua.h |
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*/ |
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@ -126,29 +126,6 @@ void luaV_settable (lua_State *L, const TValue *t, TValue *key, StkId val) { |
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} |
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static const TValue *get_equalTM (lua_State *L, Table *mt1, Table *mt2, |
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TMS event) { |
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const TValue *tm1 = fasttm(L, mt1, event); |
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const TValue *tm2; |
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if (tm1 == NULL) return NULL; /* no metamethod */ |
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if (mt1 == mt2) return tm1; /* same metatables => same metamethods */ |
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tm2 = fasttm(L, mt2, event); |
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if (tm2 == NULL) return NULL; /* no metamethod */ |
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if (luaV_rawequalobj(tm1, tm2)) /* same metamethods? */ |
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return tm1; |
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return NULL; |
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} |
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static int call_orderTM (lua_State *L, const TValue *p1, const TValue *p2, |
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TMS event) { |
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if (!luaT_callbinTM(L, p1, p2, L->top, event)) |
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return -1; /* no metamethod */ |
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else |
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return !l_isfalse(L->top); |
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} |
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static int l_strcmp (const TString *ls, const TString *rs) { |
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const char *l = getstr(ls); |
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size_t ll = ls->tsv.len; |
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@ -177,7 +154,7 @@ int luaV_lessthan (lua_State *L, const TValue *l, const TValue *r) { |
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return luai_numlt(L, nvalue(l), nvalue(r)); |
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else if (ttisstring(l) && ttisstring(r)) |
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return l_strcmp(rawtsvalue(l), rawtsvalue(r)) < 0; |
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else if ((res = call_orderTM(L, l, r, TM_LT)) < 0) |
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else if ((res = luaT_callorderTM(L, l, r, TM_LT)) < 0) |
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luaG_ordererror(L, l, r); |
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return res; |
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} |
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@ -189,9 +166,9 @@ int luaV_lessequal (lua_State *L, const TValue *l, const TValue *r) { |
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return luai_numle(L, nvalue(l), nvalue(r)); |
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else if (ttisstring(l) && ttisstring(r)) |
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return l_strcmp(rawtsvalue(l), rawtsvalue(r)) <= 0; |
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else if ((res = call_orderTM(L, l, r, TM_LE)) >= 0) /* first try `le' */ |
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else if ((res = luaT_callorderTM(L, l, r, TM_LE)) >= 0) /* first try `le' */ |
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return res; |
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else if ((res = call_orderTM(L, r, l, TM_LT)) < 0) /* else try `lt' */ |
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else if ((res = luaT_callorderTM(L, r, l, TM_LT)) < 0) /* else try `lt' */ |
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luaG_ordererror(L, l, r); |
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return !res; |
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} |
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@ -221,13 +198,13 @@ int luaV_equalobj (lua_State *L, const TValue *t1, const TValue *t2) { |
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case LUA_TUSERDATA: { |
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if (uvalue(t1) == uvalue(t2)) return 1; |
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else if (L == NULL) return 0; |
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tm = get_equalTM(L, uvalue(t1)->metatable, uvalue(t2)->metatable, TM_EQ); |
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tm = luaT_getequalTM(L, uvalue(t1)->metatable, uvalue(t2)->metatable); |
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break; /* will try TM */ |
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} |
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case LUA_TTABLE: { |
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if (hvalue(t1) == hvalue(t2)) return 1; |
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else if (L == NULL) return 0; |
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tm = get_equalTM(L, hvalue(t1)->metatable, hvalue(t2)->metatable, TM_EQ); |
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tm = luaT_getequalTM(L, hvalue(t1)->metatable, hvalue(t2)->metatable); |
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break; /* will try TM */ |
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} |
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default: |
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