LUA_API int lua_getmetatable (lua_State *L, int objindex) {
const TValue *obj;
Table *mt = NULL;
int res;
lua_lock(L);
obj = index2addr(L, objindex);
switch (ttypenv(obj)) {
case LUA_TTABLE:
mt = hvalue(obj)->metatable;
break;
case LUA_TUSERDATA:
mt = uvalue(obj)->metatable;
break;
default:
mt = G(L)->mt[ttypenv(obj)];
break;
}
if (mt == NULL)
res = 0;
else {
sethvalue(L, L->top, mt);
api_incr_top(L);
res = 1;
}
lua_unlock(L);
return res;
}
LUA_API int lua_getmetatable (lua_State *L, int objindex) {
const TObject *obj;
Table *mt = NULL;
int res;
lua_lock(L);
obj = luaA_indexAcceptable(L, objindex);
if (obj != NULL) {
switch (ttype(obj)) {
case LUA_TTABLE:
mt = hvalue(obj)->metatable;
break;
case LUA_TUSERDATA:
mt = uvalue(obj)->uv.metatable;
break;
}
}
if (mt == NULL || mt == hvalue(defaultmeta(L)))
res = 0;
else {
sethvalue(L->top, mt);
api_incr_top(L);
res = 1;
}
lua_unlock(L);
return res;
}
LUA_API void lua_setuservalue (lua_State *L, int idx) {
StkId o;
lua_lock(L);
api_checknelems(L, 1);
o = index2addr(L, idx);
api_check(L, ttisuserdata(o), "userdata expected");
if (ttisnil(L->top - 1))
uvalue(o)->env = NULL;
else {
api_check(L, ttistable(L->top - 1), "table expected");
uvalue(o)->env = hvalue(L->top - 1);
luaC_objbarrier(L, gcvalue(o), hvalue(L->top - 1));
}
L->top--;
lua_unlock(L);
}
LUA_API int lua_setmetatable (lua_State *L, int objindex) {
TObject *obj, *mt;
int res = 1;
lua_lock(L);
api_checknelems(L, 1);
obj = luaA_index(L, objindex);
mt = (!ttisnil(L->top - 1)) ? L->top - 1 : defaultmeta(L);
api_check(L, ttistable(mt));
switch (ttype(obj)) {
case LUA_TTABLE: {
hvalue(obj)->metatable = hvalue(mt); /* write barrier */
break;
}
case LUA_TUSERDATA: {
uvalue(obj)->uv.metatable = hvalue(mt); /* write barrier */
break;
}
default: {
res = 0; /* cannot set */
break;
}
}
L->top--;
lua_unlock(L);
return res;
}
int debug_getsize(lua_State* L)
{
TValue* o = L->base;
switch (o->tt) {
/* Container types */
case LUA_TTABLE: {
Table *h = hvalue(o);
lua_pushinteger(L, sizeof(Table) + sizeof(TValue) * h->sizearray +
sizeof(Node) * sizenode(h));
break;
}
case LUA_TFUNCTION: {
Closure *cl = clvalue(o);
lua_pushinteger(L, (cl->c.isC) ? sizeCclosure(cl->c.nupvalues) :
sizeLclosure(cl->l.nupvalues));
break;
}
case LUA_TTHREAD: {
lua_State *th = thvalue(o);
lua_pushinteger(L, sizeof(lua_State) + sizeof(TValue) * th->stacksize +
sizeof(CallInfo) * th->size_ci);
break;
}
case LUA_TPROTO: {
Proto *p = pvalue(o);
lua_pushinteger(L, sizeof(Proto) + sizeof(Instruction) * p->sizecode +
sizeof(Proto *) * p->sizep +
sizeof(TValue) * p->sizek +
sizeof(int) * p->sizelineinfo +
sizeof(LocVar) * p->sizelocvars +
sizeof(TString *) * p->sizeupvalues);
break;
}
/* Non-containers */
case LUA_TUSERDATA: {
lua_pushnumber(L, uvalue(o)->len);
break;
}
case LUA_TLIGHTUSERDATA: {
lua_pushnumber(L, sizeof(void*));
break;
}
case LUA_TSTRING: {
TString *s = rawtsvalue(o);
lua_pushinteger(L, sizeof(TString) + s->tsv.len + 1);
break;
}
case LUA_TNUMBER: {
lua_pushinteger(L, sizeof(lua_Number));
break;
}
case LUA_TBOOLEAN: {
lua_pushinteger(L, sizeof(int));
break;
}
default: return 0;
}
return 1;
}
LUA_API void *lua_touserdata (lua_State *L, int idx) {
StkId o = index2addr(L, idx);
switch (ttnov(o)) {
case LUA_TUSERDATA: return getudatamem(uvalue(o));
case LUA_TLIGHTUSERDATA: return pvalue(o);
default: return NULL;
}
}
static Dtree *addunion(Dtree *t, Node *pat, Node *val, Node ***cap, size_t *ncap)
{
Node *elt, *tag, *id;
int32_t t1, t2;
Dtree *sub;
Ucon *uc;
size_t i;
if (t->any)
return t->any;
uc = finducon(tybase(exprtype(pat)), pat->expr.args[0]);
t2 = uc->id;
/* if we have the value already... */
sub = NULL;
for (i = 0; i < t->nval; i++) {
tag = t->val[i]->expr.args[0];
t1 = tag->lit.intval;
if (t1 == t2) {
if (pat->expr.nargs > 1) {
elt = uvalue(val, exprtype(pat->expr.args[1]));
return addpat(t->sub[i], pat->expr.args[1], elt, cap, ncap);
} else {
return t->sub[i];
}
}
}
/* otherwise create a new match */
sub = mkdtree();
sub->patexpr = pat;
tag = mkexpr(pat->loc, Outag, val, NULL);
tag->expr.type = mktype(pat->loc, Tyint32);
id = mkintlit(pat->loc, uc->id);
id->expr.type = mktype(pat->loc, Tyint32);
lappend(&t->val, &t->nval, id);
lappend(&t->sub, &t->nsub, sub);
lappend(&t->load, &t->nload, tag);
if (pat->expr.nargs == 2) {
elt = uvalue(val, exprtype(pat->expr.args[1]));
sub = addpat(sub, pat->expr.args[1], elt, cap, ncap);
}
return sub;
}
/*
** The next function tells whether a key or value can be cleared from
** a weak table. Non-collectable objects are never removed from weak
** tables. Strings behave as `values', so are never removed too. for
** other objects: if really collected, cannot keep them; for userdata
** being finalized, keep them in keys, but not in values
*/
static int iscleared (const TValue *o, int iskey) {
if (!iscollectable(o)) return 0;
if (ttisstring(o)) {
stringmark(rawtsvalue(o)); /* strings are `values', so are never weak */
return 0;
}
return iswhite(gcvalue(o)) ||
(ttisuserdata(o) && (!iskey && isfinalized(uvalue(o))));
}
LUA_API size_t lua_rawlen (lua_State *L, int idx) {
StkId o = index2addr(L, idx);
switch (ttypenv(o)) {
case LUA_TSTRING: return tsvalue(o)->len;
case LUA_TUSERDATA: return uvalue(o)->len;
case LUA_TTABLE: return luaH_getn(hvalue(o));
default: return 0;
}
}
LUA_API void *lua_touserdata (lua_State *L, int idx) {
StkId o = luaA_indexAcceptable(L, idx);
if (o == NULL) return NULL;
switch (ttype(o)) {
case LUA_TUSERDATA: return (uvalue(o) + 1);
case LUA_TLIGHTUSERDATA: return pvalue(o);
default: return NULL;
}
}
/*
** Main operation for equality of Lua values; return 't1 == t2'.
** L == NULL means raw equality (no metamethods)
*/
int luaV_equalobj (lua_State *L, const TValue *t1, const TValue *t2) {
const TValue *tm;
if (ttype(t1) != ttype(t2)) { /* not the same variant? */
if (ttnov(t1) != ttnov(t2) || ttnov(t1) != LUA_TNUMBER)
return 0; /* only numbers can be equal with different variants */
else { /* two numbers with different variants */
lua_Integer i1, i2; /* compare them as integers */
return (tointeger(t1, &i1) && tointeger(t2, &i2) && i1 == i2);
}
}
/* values have same type and same variant */
switch (ttype(t1)) {
case LUA_TNIL: return 1;
case LUA_TNUMINT: return (ivalue(t1) == ivalue(t2));
case LUA_TNUMFLT: return luai_numeq(fltvalue(t1), fltvalue(t2));
case LUA_TBOOLEAN: return bvalue(t1) == bvalue(t2); /* true must be 1 !! */
case LUA_TLIGHTUSERDATA: return pvalue(t1) == pvalue(t2);
case LUA_TLCF: return fvalue(t1) == fvalue(t2);
case LUA_TSHRSTR: return eqshrstr(tsvalue(t1), tsvalue(t2));
case LUA_TLNGSTR: return luaS_eqlngstr(tsvalue(t1), tsvalue(t2));
case LUA_TUSERDATA: {
if (uvalue(t1) == uvalue(t2)) return 1;
else if (L == NULL) return 0;
tm = fasttm(L, uvalue(t1)->metatable, TM_EQ);
if (tm == NULL)
tm = fasttm(L, uvalue(t2)->metatable, TM_EQ);
break; /* will try TM */
}
case LUA_TTABLE: {
if (hvalue(t1) == hvalue(t2)) return 1;
else if (L == NULL) return 0;
tm = fasttm(L, hvalue(t1)->metatable, TM_EQ);
if (tm == NULL)
tm = fasttm(L, hvalue(t2)->metatable, TM_EQ);
break; /* will try TM */
}
default:
return gcvalue(t1) == gcvalue(t2);
}
if (tm == NULL) /* no TM? */
return 0; /* objects are different */
luaT_callTM(L, tm, t1, t2, L->top, 1); /* call TM */
return !l_isfalse(L->top);
}
/*
** Return the name of the type of an object. For tables and userdata
** with metatable, use their '__name' metafield, if present.
*/
const char *luaT_objtypename (lua_State *L, const TValue *o) {
Table *mt;
if ((ttistable(o) && (mt = hvalue(o)->metatable) != NULL) ||
(ttisfulluserdata(o) && (mt = uvalue(o)->metatable) != NULL)) {
const TValue *name = luaH_getshortstr(mt, luaS_new(L, "__name"));
if (ttisstring(name)) /* is '__name' a string? */
return getstr(tsvalue(name)); /* use it as type name */
}
return ttypename(ttnov(o)); /* else use standard type name */
}
LUA_API int lua_getuservalue (lua_State *L, int idx) {
StkId o;
lua_lock(L);
o = index2addr(L, idx);
api_check(ttisfulluserdata(o), "full userdata expected");
getuservalue(L, uvalue(o), L->top);
api_incr_top(L);
lua_unlock(L);
return ttnov(L->top - 1);
}
LUA_API void lua_setuservalue (lua_State *L, int idx) {
StkId o;
lua_lock(L);
api_checknelems(L, 1);
o = index2addr(L, idx);
api_check(ttisfulluserdata(o), "full userdata expected");
setuservalue(L, uvalue(o), L->top - 1);
luaC_barrier(L, gcvalue(o), L->top - 1);
L->top--;
lua_unlock(L);
}
const TObject *luaT_gettmbyobj (lua_State *L, const TObject *o, TMS event) {
TString *ename = G(L)->tmname[event];
switch (ttype(o)) {
case LUA_TTABLE:
return luaH_getstr(hvalue(o)->metatable, ename);
case LUA_TUSERDATA:
return luaH_getstr(uvalue(o)->uv.metatable, ename);
default:
return &luaO_nilobject;
}
}
float ExpressionResult::fvalue() const
{
// Convert any value to float
if (size & esDouble)
return result.d;
else if (size & esFloat)
return result.f;
else if (size & esUnsigned)
return uvalue();
else
return value();
}
LUA_API const void *lua_topointer (lua_State *L, int idx) {
StkId o = index2addr(L, idx);
switch (ttype(o)) {
case LUA_TTABLE: return hvalue(o);
case LUA_TLCL: return clLvalue(o);
case LUA_TCCL: return clCvalue(o);
case LUA_TLCF: return cast(void *, cast(size_t, fvalue(o)));
case LUA_TTHREAD: return thvalue(o);
case LUA_TUSERDATA: return getudatamem(uvalue(o));
case LUA_TLIGHTUSERDATA: return pvalue(o);
default: return NULL;
}
}
LUA_API int lua_setmetatable (lua_State *L, int objindex) {
TValue *obj;
Table *mt;
lua_lock(L);
api_checknelems(L, 1);
obj = index2addr(L, objindex);
if (ttisnil(L->top - 1))
mt = NULL;
else {
api_check(ttistable(L->top - 1), "table expected");
mt = hvalue(L->top - 1);
}
switch (ttnov(obj)) {
case LUA_TTABLE: {
hvalue(obj)->metatable = mt;
if (mt) {
luaC_objbarrier(L, gcvalue(obj), mt);
luaC_checkfinalizer(L, gcvalue(obj), mt);
}
break;
}
case LUA_TUSERDATA: {
uvalue(obj)->metatable = mt;
if (mt) {
luaC_objbarrier(L, uvalue(obj), mt);
luaC_checkfinalizer(L, gcvalue(obj), mt);
}
break;
}
default: {
G(L)->mt[ttnov(obj)] = mt;
break;
}
}
L->top--;
lua_unlock(L);
return 1;
}
LUA_API int lua_setmetatable (lua_State *L, int objindex) {
TObject *obj, *mt;
int res = 1;
lua_lock(L);
api_checknelems(L, 1);
obj = luaA_index(L, objindex);
mt = (!ttisnil(L->top - 1)) ? L->top - 1 : defaultmeta(L);
api_check(L, ttistable(mt));
switch (ttype(obj)) {
case LUA_TTABLE: {
#if LUA_REFCOUNT
__AddRefDirect(hvalue(mt));
__ReleaseDirect(L, hvalue(obj)->metatable);
#endif LUA_REFCOUNT
hvalue(obj)->metatable = hvalue(mt); /* write barrier */
break;
}
case LUA_TUSERDATA: {
#if LUA_REFCOUNT
__AddRefDirect(hvalue(mt));
__ReleaseDirect(L, &uvalue(obj)->uv.metatable);
#endif LUA_REFCOUNT
uvalue(obj)->uv.metatable = hvalue(mt); /* write barrier */
break;
}
default: {
res = 0; /* cannot set */
break;
}
}
#if LUA_REFCOUNT
setnilvalue(--L->top);
#else !LUA_REFCOUNT
L->top--;
#endif LUA_REFCOUNT
lua_unlock(L);
return res;
}
const TValue *luaT_gettmbyobj (lua_State *L, const TValue *o, TMS event) {
Table *mt;
switch (ttypenv(o)) {
case LUA_TTABLE:
mt = hvalue(o)->metatable;
break;
case LUA_TUSERDATA:
mt = uvalue(o)->metatable;
break;
default:
mt = G(L)->mt[ttypenv(o)];
}
return (mt ? luaH_getstr(mt, G(L)->tmname[event]) : luaO_nilobject);
}
/*
* equality of ktap values. ks == NULL means raw equality
*/
int kp_equalobjv(ktap_state *ks, const ktap_value *t1, const ktap_value *t2)
{
switch (ttype(t1)) {
case KTAP_TNIL:
return 1;
case KTAP_TNUMBER:
return nvalue(t1) == nvalue(t2);
case KTAP_TBOOLEAN:
return bvalue(t1) == bvalue(t2); /* true must be 1 !! */
case KTAP_TLIGHTUSERDATA:
return pvalue(t1) == pvalue(t2);
case KTAP_TLCF:
return fvalue(t1) == fvalue(t2);
case KTAP_TSHRSTR:
return eqshrstr(rawtsvalue(t1), rawtsvalue(t2));
case KTAP_TLNGSTR:
return kp_tstring_eqlngstr(rawtsvalue(t1), rawtsvalue(t2));
case KTAP_TUSERDATA:
if (uvalue(t1) == uvalue(t2))
return 1;
else if (ks == NULL)
return 0;
case KTAP_TTABLE:
if (hvalue(t1) == hvalue(t2))
return 1;
else if (ks == NULL)
return 0;
#ifdef __KERNEL__
case KTAP_TBTRACE:
return kp_btrace_equal(btvalue(t1), btvalue(t2));
#endif
default:
return gcvalue(t1) == gcvalue(t2);
}
return 0;
}
int luaV_equalval(lua_State *L, const TValue *t1, const TValue *t2)
{
const TValue* tm = 0;
lua_assert(ttype(t1) == ttype(t2));
switch (ttype(t1))
{
case LUA_TNIL:
return 1;
case LUA_TNUMBER:
return luai_numeq(nvalue(t1), nvalue(t2));
case LUA_TBOOLEAN:
return bvalue(t1) == bvalue(t2); /* true must be 1 !! */
case LUA_TLIGHTUSERDATA:
return pvalue(t1) == pvalue(t2);
case LUA_TUSERDATA:
{
if (uvalue(t1) == uvalue(t2))
return 1;
tm = get_compTM(L, uvalue(t1)->metatable, uvalue(t2)->metatable, TM_EQ);
break; /* will try TM */
}
case LUA_TTABLE:
{
if (hvalue(t1) == hvalue(t2))
return 1;
tm = get_compTM(L, hvalue(t1)->metatable, hvalue(t2)->metatable, TM_EQ);
break; /* will try TM */
}
default:
return gcvalue(t1) == gcvalue(t2);
}
if (tm == NULL)
return 0; /* no TM? */
callTMres(L, L->top, tm, t1, t2); /* call TM */
return !l_isfalse(L->top);
}
void kp_showobj(ktap_state *ks, const ktap_value *v)
{
switch (ttype(v)) {
case KTAP_TNIL:
kp_puts(ks, "nil");
break;
case KTAP_TNUMBER:
kp_printf(ks, "%ld", nvalue(v));
break;
case KTAP_TBOOLEAN:
kp_puts(ks, (bvalue(v) == 1) ? "true" : "false");
break;
case KTAP_TLIGHTUSERDATA:
kp_printf(ks, "0x%lx", (unsigned long)pvalue(v));
break;
case KTAP_TLCF:
kp_printf(ks, "0x%lx", (unsigned long)fvalue(v));
break;
case KTAP_TSHRSTR:
case KTAP_TLNGSTR:
kp_puts(ks, svalue(v));
break;
case KTAP_TUSERDATA:
kp_printf(ks, "0x%lx", (unsigned long)uvalue(v));
break;
case KTAP_TTABLE:
kp_table_dump(ks, hvalue(v));
break;
#ifdef __KERNEL__
case KTAP_TEVENT:
kp_transport_event_write(ks, evalue(v));
break;
case KTAP_TBTRACE:
kp_btrace_dump(ks, btvalue(v));
break;
case KTAP_TAGGRTABLE:
kp_aggrtable_dump(ks, ahvalue(v));
break;
case KTAP_TAGGRACCVAL:
kp_aggraccval_dump(ks, aggraccvalue(v));
break;
#endif
default:
kp_error(ks, "print unknown value type: %d\n", ttype(v));
break;
}
}
static void persistuserdata(PersistInfo *pi) {
/* perms reftbl ... udata */
if(persistspecialobject(pi, 0)) {
/* perms reftbl ... udata */
return;
} else {
/* Use literal persistence */
int length = uvalue(getobject(pi->L, -2))->uv.len;
pi->writer(pi->L, &length, sizeof(int), pi->ud);
pi->writer(pi->L, lua_touserdata(pi->L, -1), length, pi->ud);
if(!lua_getmetatable(pi->L, -1)) {
/* perms reftbl ... udata */
lua_pushnil(pi->L);
/* perms reftbl ... udata mt/nil */
}
persist(pi);
lua_pop(pi->L, 1);
/* perms reftbl ... udata */
}
}
void kp_showobj(ktap_State *ks, const Tvalue *v)
{
switch (ttype(v)) {
case KTAP_TNIL:
kp_printf(ks, "nil");
break;
case KTAP_TNUMBER:
kp_printf(ks, "%d", nvalue(v));
break;
case KTAP_TBOOLEAN:
kp_printf(ks, "%s", (bvalue(v) == 1) ? "true" : "false");
break;
case KTAP_TLIGHTUSERDATA:
kp_printf(ks, "%d", pvalue(v));
break;
case KTAP_TLCF:
kp_printf(ks, "0x%x", fvalue(v));
break;
case KTAP_TSHRSTR:
case KTAP_TLNGSTR:
kp_printf(ks, "\"%s\"", getstr(rawtsvalue(v)));
break;
case KTAP_TUSERDATA:
kp_printf(ks, "%d", uvalue(v));
break;
case KTAP_TTABLE:
kp_table_dump(ks, hvalue(v));
break;
#ifdef __KERNEL__
case KTAP_TEVENT:
kp_show_event(ks);
break;
#endif
default:
kp_printf(ks, "[unknown value type: %d]", ttype(v));
break;
}
}
const TValue *luaT_gettmbyobj (lua_State *L, const TValue *o, TMS event)
{
Table *mt;
switch (ttype(o)) {
case LUA_TTABLE:
mt = hvalue(o)->metatable;
break;
case LUA_TROTABLE:
mt = (Table *)luaR_getmeta(rvalue(o));
break;
case LUA_TUSERDATA:
mt = uvalue(o)->metatable;
break;
default:
mt = G(L)->mt[ttype(o)];
}
if (!mt)
return luaO_nilobject;
else if (luaR_isrotable(mt))
return luaH_getstr_ro(mt, G(L)->tmname[event]);
else
return luaH_getstr(mt, G(L)->tmname[event]);
}
static int hashindex (Hash *t, Object *ref) /* hash function */
{
long int h;
switch (tag(ref)) {
case LUA_T_NIL:
lua_error ("unexpected type to index table");
h = 0; /* UNREACHEABLE */
case LUA_T_NUMBER:
h = (long int)nvalue(ref); break;
case LUA_T_STRING:
h = tsvalue(ref)->hash; break;
case LUA_T_FUNCTION:
h = (IntPoint)ref->value.tf; break;
case LUA_T_CFUNCTION:
h = (IntPoint)fvalue(ref); break;
case LUA_T_ARRAY:
h = (IntPoint)avalue(ref); break;
default: /* user data */
h = (IntPoint)uvalue(ref); break;
}
if (h < 0) h = -h;
return h%nhash(t); /* make it a valid index */
}
QString ExpressionResult::toString() const
{
if (resultType & erUndefined)
return "(undefined value)";
else if (resultType & erRuntime)
return "(runtime expression)";
switch (size) {
case esUndefined: return "(undefined value)";
case esFloat: return QString::number(result.f);
case esDouble: return QString::number(result.d);
case esInt8: return QString::number(result.i8);
case esUInt8: return QString::number(result.ui8);
case esInt16: return QString::number(result.i16);
case esUInt16: return QString::number(result.ui16);
case esInt32:
return (result.i32 > 65535 || result.i32 < -65535) ?
"0x" + QString::number(result.i32, 16) :
QString::number(result.i32);
case esUInt32:
return (result.ui32 > 65535) ?
"0x" + QString::number(result.ui32, 16) :
QString::number(result.ui32);
case esInt64:
return (result.i64 > 65535 || result.i64 < -65535) ?
"0x" + QString::number(result.i64, 16) :
QString::number(result.i64);
case esUInt64:
return (result.ui64 > 65535) ?
"0x" + QString::number(result.ui64, 16) :
QString::number(result.ui64);
default:
return (size & esUnsigned) ?
QString::number(uvalue()) :
QString::number(value());
}
}
qint64 ExpressionResult::value(ExprResultSizes target) const
{
qint64 ret;
// Is either the target or this value unsigned?
if (target && ((target | size) & esUnsigned)) {
// If the target is unsigned, return the unsigned value instead.
// If this value is unsigned, do not extend the sign!
ret = uvalue(target | esUnsigned);
}
// No target specified, or both target and this value are signed, so
// extend this value's sign to 64 bit
else {
ret = (size & es64Bit) ?
result.i64 :
(size & es32Bit) ?
(qint64) result.i32 :
(size & es16Bit) ?
(qint64) result.i16 :
(qint64) result.i8;
}
// debugmsg(QString("Returning 0x%1").arg(ret, 16, 16, QChar('0')));
return ret;
}
/*
** Given an object handle, return its user data. On error, return NULL.
*/
void *lua_getuserdata (lua_Object object)
{
if (object == LUA_NOOBJECT || tag(Address(object)) < LUA_T_USERDATA)
return NULL;
else return (uvalue(Address(object)));
}