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cuberite-2a/squirrel_3_0_1_stable/squirrel/sqapi.cpp

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/*
see copyright notice in squirrel.h
*/
#include "sqpcheader.h"
#include "sqvm.h"
#include "sqstring.h"
#include "sqtable.h"
#include "sqarray.h"
#include "sqfuncproto.h"
#include "sqclosure.h"
#include "squserdata.h"
#include "sqcompiler.h"
#include "sqfuncstate.h"
#include "sqclass.h"
bool sq_aux_gettypedarg(HSQUIRRELVM v,SQInteger idx,SQObjectType type,SQObjectPtr **o)
{
*o = &stack_get(v,idx);
if(type(**o) != type){
SQObjectPtr oval = v->PrintObjVal(**o);
v->Raise_Error(_SC("wrong argument type, expected '%s' got '%.50s'"),IdType2Name(type),_stringval(oval));
return false;
}
return true;
}
#define _GETSAFE_OBJ(v,idx,type,o) { if(!sq_aux_gettypedarg(v,idx,type,&o)) return SQ_ERROR; }
#define sq_aux_paramscheck(v,count) \
{ \
if(sq_gettop(v) < count){ v->Raise_Error(_SC("not enough params in the stack")); return SQ_ERROR; }\
}
SQInteger sq_aux_invalidtype(HSQUIRRELVM v,SQObjectType type)
{
scsprintf(_ss(v)->GetScratchPad(100), _SC("unexpected type %s"), IdType2Name(type));
return sq_throwerror(v, _ss(v)->GetScratchPad(-1));
}
HSQUIRRELVM sq_open(SQInteger initialstacksize)
{
SQSharedState *ss;
SQVM *v;
sq_new(ss, SQSharedState);
ss->Init();
v = (SQVM *)SQ_MALLOC(sizeof(SQVM));
new (v) SQVM(ss);
ss->_root_vm = v;
if(v->Init(NULL, initialstacksize)) {
return v;
} else {
sq_delete(v, SQVM);
return NULL;
}
return v;
}
HSQUIRRELVM sq_newthread(HSQUIRRELVM friendvm, SQInteger initialstacksize)
{
SQSharedState *ss;
SQVM *v;
ss=_ss(friendvm);
v= (SQVM *)SQ_MALLOC(sizeof(SQVM));
new (v) SQVM(ss);
if(v->Init(friendvm, initialstacksize)) {
friendvm->Push(v);
return v;
} else {
sq_delete(v, SQVM);
return NULL;
}
}
SQInteger sq_getvmstate(HSQUIRRELVM v)
{
if(v->_suspended)
return SQ_VMSTATE_SUSPENDED;
else {
if(v->_callsstacksize != 0) return SQ_VMSTATE_RUNNING;
else return SQ_VMSTATE_IDLE;
}
}
void sq_seterrorhandler(HSQUIRRELVM v)
{
SQObject o = stack_get(v, -1);
if(sq_isclosure(o) || sq_isnativeclosure(o) || sq_isnull(o)) {
v->_errorhandler = o;
v->Pop();
}
}
void sq_setnativedebughook(HSQUIRRELVM v,SQDEBUGHOOK hook)
{
v->_debughook_native = hook;
v->_debughook_closure.Null();
v->_debughook = hook?true:false;
}
void sq_setdebughook(HSQUIRRELVM v)
{
SQObject o = stack_get(v,-1);
if(sq_isclosure(o) || sq_isnativeclosure(o) || sq_isnull(o)) {
v->_debughook_closure = o;
v->_debughook_native = NULL;
v->_debughook = !sq_isnull(o);
v->Pop();
}
}
void sq_close(HSQUIRRELVM v)
{
SQSharedState *ss = _ss(v);
_thread(ss->_root_vm)->Finalize();
sq_delete(ss, SQSharedState);
}
SQRESULT sq_compile(HSQUIRRELVM v,SQLEXREADFUNC read,SQUserPointer p,const SQChar *sourcename,SQBool raiseerror)
{
SQObjectPtr o;
#ifndef NO_COMPILER
if(Compile(v, read, p, sourcename, o, raiseerror?true:false, _ss(v)->_debuginfo)) {
v->Push(SQClosure::Create(_ss(v), _funcproto(o)));
return SQ_OK;
}
return SQ_ERROR;
#else
return sq_throwerror(v,_SC("this is a no compiler build"));
#endif
}
void sq_enabledebuginfo(HSQUIRRELVM v, SQBool enable)
{
_ss(v)->_debuginfo = enable?true:false;
}
void sq_notifyallexceptions(HSQUIRRELVM v, SQBool enable)
{
_ss(v)->_notifyallexceptions = enable?true:false;
}
void sq_addref(HSQUIRRELVM v,HSQOBJECT *po)
{
if(!ISREFCOUNTED(type(*po))) return;
#ifdef NO_GARBAGE_COLLECTOR
__AddRef(po->_type,po->_unVal);
#else
_ss(v)->_refs_table.AddRef(*po);
#endif
}
SQUnsignedInteger sq_getrefcount(HSQUIRRELVM v,HSQOBJECT *po)
{
if(!ISREFCOUNTED(type(*po))) return 0;
#ifdef NO_GARBAGE_COLLECTOR
return po->_unVal.pRefCounted->_uiRef;
#else
return _ss(v)->_refs_table.GetRefCount(*po);
#endif
}
SQBool sq_release(HSQUIRRELVM v,HSQOBJECT *po)
{
if(!ISREFCOUNTED(type(*po))) return SQTrue;
#ifdef NO_GARBAGE_COLLECTOR
bool ret = (po->_unVal.pRefCounted->_uiRef <= 1) ? SQTrue : SQFalse;
__Release(po->_type,po->_unVal);
return ret; //the ret val doesn't work(and cannot be fixed)
#else
return _ss(v)->_refs_table.Release(*po);
#endif
}
const SQChar *sq_objtostring(const HSQOBJECT *o)
{
if(sq_type(*o) == OT_STRING) {
return _stringval(*o);
}
return NULL;
}
SQInteger sq_objtointeger(const HSQOBJECT *o)
{
if(sq_isnumeric(*o)) {
return tointeger(*o);
}
return 0;
}
SQFloat sq_objtofloat(const HSQOBJECT *o)
{
if(sq_isnumeric(*o)) {
return tofloat(*o);
}
return 0;
}
SQBool sq_objtobool(const HSQOBJECT *o)
{
if(sq_isbool(*o)) {
return _integer(*o);
}
return SQFalse;
}
SQUserPointer sq_objtouserpointer(const HSQOBJECT *o)
{
if(sq_isuserpointer(*o)) {
return _userpointer(*o);
}
return 0;
}
void sq_pushnull(HSQUIRRELVM v)
{
v->PushNull();
}
void sq_pushstring(HSQUIRRELVM v,const SQChar *s,SQInteger len)
{
if(s)
v->Push(SQObjectPtr(SQString::Create(_ss(v), s, len)));
else v->PushNull();
}
void sq_pushinteger(HSQUIRRELVM v,SQInteger n)
{
v->Push(n);
}
void sq_pushbool(HSQUIRRELVM v,SQBool b)
{
v->Push(b?true:false);
}
void sq_pushfloat(HSQUIRRELVM v,SQFloat n)
{
v->Push(n);
}
void sq_pushuserpointer(HSQUIRRELVM v,SQUserPointer p)
{
v->Push(p);
}
SQUserPointer sq_newuserdata(HSQUIRRELVM v,SQUnsignedInteger size)
{
SQUserData *ud = SQUserData::Create(_ss(v), size);
v->Push(ud);
return (SQUserPointer)sq_aligning(ud + 1);
}
void sq_newtable(HSQUIRRELVM v)
{
v->Push(SQTable::Create(_ss(v), 0));
}
void sq_newtableex(HSQUIRRELVM v,SQInteger initialcapacity)
{
v->Push(SQTable::Create(_ss(v), initialcapacity));
}
void sq_newarray(HSQUIRRELVM v,SQInteger size)
{
v->Push(SQArray::Create(_ss(v), size));
}
SQRESULT sq_newclass(HSQUIRRELVM v,SQBool hasbase)
{
SQClass *baseclass = NULL;
if(hasbase) {
SQObjectPtr &base = stack_get(v,-1);
if(type(base) != OT_CLASS)
return sq_throwerror(v,_SC("invalid base type"));
baseclass = _class(base);
}
SQClass *newclass = SQClass::Create(_ss(v), baseclass);
if(baseclass) v->Pop();
v->Push(newclass);
return SQ_OK;
}
SQBool sq_instanceof(HSQUIRRELVM v)
{
SQObjectPtr &inst = stack_get(v,-1);
SQObjectPtr &cl = stack_get(v,-2);
if(type(inst) != OT_INSTANCE || type(cl) != OT_CLASS)
return sq_throwerror(v,_SC("invalid param type"));
return _instance(inst)->InstanceOf(_class(cl))?SQTrue:SQFalse;
}
SQRESULT sq_arrayappend(HSQUIRRELVM v,SQInteger idx)
{
sq_aux_paramscheck(v,2);
SQObjectPtr *arr;
_GETSAFE_OBJ(v, idx, OT_ARRAY,arr);
_array(*arr)->Append(v->GetUp(-1));
v->Pop();
return SQ_OK;
}
SQRESULT sq_arraypop(HSQUIRRELVM v,SQInteger idx,SQBool pushval)
{
sq_aux_paramscheck(v, 1);
SQObjectPtr *arr;
_GETSAFE_OBJ(v, idx, OT_ARRAY,arr);
if(_array(*arr)->Size() > 0) {
if(pushval != 0){ v->Push(_array(*arr)->Top()); }
_array(*arr)->Pop();
return SQ_OK;
}
return sq_throwerror(v, _SC("empty array"));
}
SQRESULT sq_arrayresize(HSQUIRRELVM v,SQInteger idx,SQInteger newsize)
{
sq_aux_paramscheck(v,1);
SQObjectPtr *arr;
_GETSAFE_OBJ(v, idx, OT_ARRAY,arr);
if(newsize >= 0) {
_array(*arr)->Resize(newsize);
return SQ_OK;
}
return sq_throwerror(v,_SC("negative size"));
}
SQRESULT sq_arrayreverse(HSQUIRRELVM v,SQInteger idx)
{
sq_aux_paramscheck(v, 1);
SQObjectPtr *o;
_GETSAFE_OBJ(v, idx, OT_ARRAY,o);
SQArray *arr = _array(*o);
if(arr->Size() > 0) {
SQObjectPtr t;
SQInteger size = arr->Size();
SQInteger n = size >> 1; size -= 1;
for(SQInteger i = 0; i < n; i++) {
t = arr->_values[i];
arr->_values[i] = arr->_values[size-i];
arr->_values[size-i] = t;
}
return SQ_OK;
}
return SQ_OK;
}
SQRESULT sq_arrayremove(HSQUIRRELVM v,SQInteger idx,SQInteger itemidx)
{
sq_aux_paramscheck(v, 1);
SQObjectPtr *arr;
_GETSAFE_OBJ(v, idx, OT_ARRAY,arr);
return _array(*arr)->Remove(itemidx) ? SQ_OK : sq_throwerror(v,_SC("index out of range"));
}
SQRESULT sq_arrayinsert(HSQUIRRELVM v,SQInteger idx,SQInteger destpos)
{
sq_aux_paramscheck(v, 1);
SQObjectPtr *arr;
_GETSAFE_OBJ(v, idx, OT_ARRAY,arr);
SQRESULT ret = _array(*arr)->Insert(destpos, v->GetUp(-1)) ? SQ_OK : sq_throwerror(v,_SC("index out of range"));
v->Pop();
return ret;
}
void sq_newclosure(HSQUIRRELVM v,SQFUNCTION func,SQUnsignedInteger nfreevars)
{
SQNativeClosure *nc = SQNativeClosure::Create(_ss(v), func,nfreevars);
nc->_nparamscheck = 0;
for(SQUnsignedInteger i = 0; i < nfreevars; i++) {
nc->_outervalues[i] = v->Top();
v->Pop();
}
v->Push(SQObjectPtr(nc));
}
SQRESULT sq_getclosureinfo(HSQUIRRELVM v,SQInteger idx,SQUnsignedInteger *nparams,SQUnsignedInteger *nfreevars)
{
SQObject o = stack_get(v, idx);
if(type(o) == OT_CLOSURE) {
SQClosure *c = _closure(o);
SQFunctionProto *proto = c->_function;
*nparams = (SQUnsignedInteger)proto->_nparameters;
*nfreevars = (SQUnsignedInteger)proto->_noutervalues;
return SQ_OK;
}
else if(type(o) == OT_NATIVECLOSURE)
{
SQNativeClosure *c = _nativeclosure(o);
*nparams = (SQUnsignedInteger)c->_nparamscheck;
*nfreevars = c->_noutervalues;
return SQ_OK;
}
return sq_throwerror(v,_SC("the object is not a closure"));
}
SQRESULT sq_setnativeclosurename(HSQUIRRELVM v,SQInteger idx,const SQChar *name)
{
SQObject o = stack_get(v, idx);
if(sq_isnativeclosure(o)) {
SQNativeClosure *nc = _nativeclosure(o);
nc->_name = SQString::Create(_ss(v),name);
return SQ_OK;
}
return sq_throwerror(v,_SC("the object is not a nativeclosure"));
}
SQRESULT sq_setparamscheck(HSQUIRRELVM v,SQInteger nparamscheck,const SQChar *typemask)
{
SQObject o = stack_get(v, -1);
if(!sq_isnativeclosure(o))
return sq_throwerror(v, _SC("native closure expected"));
SQNativeClosure *nc = _nativeclosure(o);
nc->_nparamscheck = nparamscheck;
if(typemask) {
SQIntVec res;
if(!CompileTypemask(res, typemask))
return sq_throwerror(v, _SC("invalid typemask"));
nc->_typecheck.copy(res);
}
else {
nc->_typecheck.resize(0);
}
if(nparamscheck == SQ_MATCHTYPEMASKSTRING) {
nc->_nparamscheck = nc->_typecheck.size();
}
return SQ_OK;
}
SQRESULT sq_bindenv(HSQUIRRELVM v,SQInteger idx)
{
SQObjectPtr &o = stack_get(v,idx);
if(!sq_isnativeclosure(o) &&
!sq_isclosure(o))
return sq_throwerror(v,_SC("the target is not a closure"));
SQObjectPtr &env = stack_get(v,-1);
if(!sq_istable(env) &&
!sq_isclass(env) &&
!sq_isinstance(env))
return sq_throwerror(v,_SC("invalid environment"));
SQWeakRef *w = _refcounted(env)->GetWeakRef(type(env));
SQObjectPtr ret;
if(sq_isclosure(o)) {
SQClosure *c = _closure(o)->Clone();
__ObjRelease(c->_env);
c->_env = w;
__ObjAddRef(c->_env);
if(_closure(o)->_base) {
c->_base = _closure(o)->_base;
__ObjAddRef(c->_base);
}
ret = c;
}
else { //then must be a native closure
SQNativeClosure *c = _nativeclosure(o)->Clone();
__ObjRelease(c->_env);
c->_env = w;
__ObjAddRef(c->_env);
ret = c;
}
v->Pop();
v->Push(ret);
return SQ_OK;
}
SQRESULT sq_clear(HSQUIRRELVM v,SQInteger idx)
{
SQObject &o=stack_get(v,idx);
switch(type(o)) {
case OT_TABLE: _table(o)->Clear(); break;
case OT_ARRAY: _array(o)->Resize(0); break;
default:
return sq_throwerror(v, _SC("clear only works on table and array"));
break;
}
return SQ_OK;
}
void sq_pushroottable(HSQUIRRELVM v)
{
v->Push(v->_roottable);
}
void sq_pushregistrytable(HSQUIRRELVM v)
{
v->Push(_ss(v)->_registry);
}
void sq_pushconsttable(HSQUIRRELVM v)
{
v->Push(_ss(v)->_consts);
}
SQRESULT sq_setroottable(HSQUIRRELVM v)
{
SQObject o = stack_get(v, -1);
if(sq_istable(o) || sq_isnull(o)) {
v->_roottable = o;
v->Pop();
return SQ_OK;
}
return sq_throwerror(v, _SC("ivalid type"));
}
SQRESULT sq_setconsttable(HSQUIRRELVM v)
{
SQObject o = stack_get(v, -1);
if(sq_istable(o)) {
_ss(v)->_consts = o;
v->Pop();
return SQ_OK;
}
return sq_throwerror(v, _SC("ivalid type, expected table"));
}
void sq_setforeignptr(HSQUIRRELVM v,SQUserPointer p)
{
v->_foreignptr = p;
}
SQUserPointer sq_getforeignptr(HSQUIRRELVM v)
{
return v->_foreignptr;
}
void sq_push(HSQUIRRELVM v,SQInteger idx)
{
v->Push(stack_get(v, idx));
}
SQObjectType sq_gettype(HSQUIRRELVM v,SQInteger idx)
{
return type(stack_get(v, idx));
}
SQRESULT sq_tostring(HSQUIRRELVM v,SQInteger idx)
{
SQObjectPtr &o = stack_get(v, idx);
SQObjectPtr res;
if(!v->ToString(o,res)) {
return SQ_ERROR;
}
v->Push(res);
return SQ_OK;
}
void sq_tobool(HSQUIRRELVM v, SQInteger idx, SQBool *b)
{
SQObjectPtr &o = stack_get(v, idx);
*b = SQVM::IsFalse(o)?SQFalse:SQTrue;
}
SQRESULT sq_getinteger(HSQUIRRELVM v,SQInteger idx,SQInteger *i)
{
SQObjectPtr &o = stack_get(v, idx);
if(sq_isnumeric(o)) {
*i = tointeger(o);
return SQ_OK;
}
return SQ_ERROR;
}
SQRESULT sq_getfloat(HSQUIRRELVM v,SQInteger idx,SQFloat *f)
{
SQObjectPtr &o = stack_get(v, idx);
if(sq_isnumeric(o)) {
*f = tofloat(o);
return SQ_OK;
}
return SQ_ERROR;
}
SQRESULT sq_getbool(HSQUIRRELVM v,SQInteger idx,SQBool *b)
{
SQObjectPtr &o = stack_get(v, idx);
if(sq_isbool(o)) {
*b = _integer(o);
return SQ_OK;
}
return SQ_ERROR;
}
SQRESULT sq_getstring(HSQUIRRELVM v,SQInteger idx,const SQChar **c)
{
SQObjectPtr *o = NULL;
_GETSAFE_OBJ(v, idx, OT_STRING,o);
*c = _stringval(*o);
return SQ_OK;
}
SQRESULT sq_getthread(HSQUIRRELVM v,SQInteger idx,HSQUIRRELVM *thread)
{
SQObjectPtr *o = NULL;
_GETSAFE_OBJ(v, idx, OT_THREAD,o);
*thread = _thread(*o);
return SQ_OK;
}
SQRESULT sq_clone(HSQUIRRELVM v,SQInteger idx)
{
SQObjectPtr &o = stack_get(v,idx);
v->PushNull();
if(!v->Clone(o, stack_get(v, -1))){
v->Pop();
return SQ_ERROR;
}
return SQ_OK;
}
SQInteger sq_getsize(HSQUIRRELVM v, SQInteger idx)
{
SQObjectPtr &o = stack_get(v, idx);
SQObjectType type = type(o);
switch(type) {
case OT_STRING: return _string(o)->_len;
case OT_TABLE: return _table(o)->CountUsed();
case OT_ARRAY: return _array(o)->Size();
case OT_USERDATA: return _userdata(o)->_size;
case OT_INSTANCE: return _instance(o)->_class->_udsize;
case OT_CLASS: return _class(o)->_udsize;
default:
return sq_aux_invalidtype(v, type);
}
}
SQRESULT sq_getuserdata(HSQUIRRELVM v,SQInteger idx,SQUserPointer *p,SQUserPointer *typetag)
{
SQObjectPtr *o = NULL;
_GETSAFE_OBJ(v, idx, OT_USERDATA,o);
(*p) = _userdataval(*o);
if(typetag) *typetag = _userdata(*o)->_typetag;
return SQ_OK;
}
SQRESULT sq_settypetag(HSQUIRRELVM v,SQInteger idx,SQUserPointer typetag)
{
SQObjectPtr &o = stack_get(v,idx);
switch(type(o)) {
case OT_USERDATA: _userdata(o)->_typetag = typetag; break;
case OT_CLASS: _class(o)->_typetag = typetag; break;
default: return sq_throwerror(v,_SC("invalid object type"));
}
return SQ_OK;
}
SQRESULT sq_getobjtypetag(const HSQOBJECT *o,SQUserPointer * typetag)
{
switch(type(*o)) {
case OT_INSTANCE: *typetag = _instance(*o)->_class->_typetag; break;
case OT_USERDATA: *typetag = _userdata(*o)->_typetag; break;
case OT_CLASS: *typetag = _class(*o)->_typetag; break;
default: return SQ_ERROR;
}
return SQ_OK;
}
SQRESULT sq_gettypetag(HSQUIRRELVM v,SQInteger idx,SQUserPointer *typetag)
{
SQObjectPtr &o = stack_get(v,idx);
if(SQ_FAILED(sq_getobjtypetag(&o,typetag)))
return sq_throwerror(v,_SC("invalid object type"));
return SQ_OK;
}
SQRESULT sq_getuserpointer(HSQUIRRELVM v, SQInteger idx, SQUserPointer *p)
{
SQObjectPtr *o = NULL;
_GETSAFE_OBJ(v, idx, OT_USERPOINTER,o);
(*p) = _userpointer(*o);
return SQ_OK;
}
SQRESULT sq_setinstanceup(HSQUIRRELVM v, SQInteger idx, SQUserPointer p)
{
SQObjectPtr &o = stack_get(v,idx);
if(type(o) != OT_INSTANCE) return sq_throwerror(v,_SC("the object is not a class instance"));
_instance(o)->_userpointer = p;
return SQ_OK;
}
SQRESULT sq_setclassudsize(HSQUIRRELVM v, SQInteger idx, SQInteger udsize)
{
SQObjectPtr &o = stack_get(v,idx);
if(type(o) != OT_CLASS) return sq_throwerror(v,_SC("the object is not a class"));
if(_class(o)->_locked) return sq_throwerror(v,_SC("the class is locked"));
_class(o)->_udsize = udsize;
return SQ_OK;
}
SQRESULT sq_getinstanceup(HSQUIRRELVM v, SQInteger idx, SQUserPointer *p,SQUserPointer typetag)
{
SQObjectPtr &o = stack_get(v,idx);
if(type(o) != OT_INSTANCE) return sq_throwerror(v,_SC("the object is not a class instance"));
(*p) = _instance(o)->_userpointer;
if(typetag != 0) {
SQClass *cl = _instance(o)->_class;
do{
if(cl->_typetag == typetag)
return SQ_OK;
cl = cl->_base;
}while(cl != NULL);
return sq_throwerror(v,_SC("invalid type tag"));
}
return SQ_OK;
}
SQInteger sq_gettop(HSQUIRRELVM v)
{
return (v->_top) - v->_stackbase;
}
void sq_settop(HSQUIRRELVM v, SQInteger newtop)
{
SQInteger top = sq_gettop(v);
if(top > newtop)
sq_pop(v, top - newtop);
else
while(top++ < newtop) sq_pushnull(v);
}
void sq_pop(HSQUIRRELVM v, SQInteger nelemstopop)
{
assert(v->_top >= nelemstopop);
v->Pop(nelemstopop);
}
void sq_poptop(HSQUIRRELVM v)
{
assert(v->_top >= 1);
v->Pop();
}
void sq_remove(HSQUIRRELVM v, SQInteger idx)
{
v->Remove(idx);
}
SQInteger sq_cmp(HSQUIRRELVM v)
{
SQInteger res;
v->ObjCmp(stack_get(v, -1), stack_get(v, -2),res);
return res;
}
SQRESULT sq_newslot(HSQUIRRELVM v, SQInteger idx, SQBool bstatic)
{
sq_aux_paramscheck(v, 3);
SQObjectPtr &self = stack_get(v, idx);
if(type(self) == OT_TABLE || type(self) == OT_CLASS) {
SQObjectPtr &key = v->GetUp(-2);
if(type(key) == OT_NULL) return sq_throwerror(v, _SC("null is not a valid key"));
v->NewSlot(self, key, v->GetUp(-1),bstatic?true:false);
v->Pop(2);
}
return SQ_OK;
}
SQRESULT sq_deleteslot(HSQUIRRELVM v,SQInteger idx,SQBool pushval)
{
sq_aux_paramscheck(v, 2);
SQObjectPtr *self;
_GETSAFE_OBJ(v, idx, OT_TABLE,self);
SQObjectPtr &key = v->GetUp(-1);
if(type(key) == OT_NULL) return sq_throwerror(v, _SC("null is not a valid key"));
SQObjectPtr res;
if(!v->DeleteSlot(*self, key, res)){
return SQ_ERROR;
}
if(pushval) v->GetUp(-1) = res;
else v->Pop();
return SQ_OK;
}
SQRESULT sq_set(HSQUIRRELVM v,SQInteger idx)
{
SQObjectPtr &self = stack_get(v, idx);
if(v->Set(self, v->GetUp(-2), v->GetUp(-1),DONT_FALL_BACK)) {
v->Pop(2);
return SQ_OK;
}
return SQ_ERROR;
}
SQRESULT sq_rawset(HSQUIRRELVM v,SQInteger idx)
{
SQObjectPtr &self = stack_get(v, idx);
if(type(v->GetUp(-2)) == OT_NULL) return sq_throwerror(v, _SC("null key"));
switch(type(self)) {
case OT_TABLE:
_table(self)->NewSlot(v->GetUp(-2), v->GetUp(-1));
v->Pop(2);
return SQ_OK;
break;
case OT_CLASS:
_class(self)->NewSlot(_ss(v), v->GetUp(-2), v->GetUp(-1),false);
v->Pop(2);
return SQ_OK;
break;
case OT_INSTANCE:
if(_instance(self)->Set(v->GetUp(-2), v->GetUp(-1))) {
v->Pop(2);
return SQ_OK;
}
break;
case OT_ARRAY:
if(v->Set(self, v->GetUp(-2), v->GetUp(-1),false)) {
v->Pop(2);
return SQ_OK;
}
break;
default:
v->Pop(2);
return sq_throwerror(v, _SC("rawset works only on array/table/class and instance"));
}
v->Raise_IdxError(v->GetUp(-2));return SQ_ERROR;
}
SQRESULT sq_setdelegate(HSQUIRRELVM v,SQInteger idx)
{
SQObjectPtr &self = stack_get(v, idx);
SQObjectPtr &mt = v->GetUp(-1);
SQObjectType type = type(self);
switch(type) {
case OT_TABLE:
if(type(mt) == OT_TABLE) {
if(!_table(self)->SetDelegate(_table(mt))) return sq_throwerror(v, _SC("delagate cycle")); v->Pop();}
else if(type(mt)==OT_NULL) {
_table(self)->SetDelegate(NULL); v->Pop(); }
else return sq_aux_invalidtype(v,type);
break;
case OT_USERDATA:
if(type(mt)==OT_TABLE) {
_userdata(self)->SetDelegate(_table(mt)); v->Pop(); }
else if(type(mt)==OT_NULL) {
_userdata(self)->SetDelegate(NULL); v->Pop(); }
else return sq_aux_invalidtype(v, type);
break;
default:
return sq_aux_invalidtype(v, type);
break;
}
return SQ_OK;
}
SQRESULT sq_rawdeleteslot(HSQUIRRELVM v,SQInteger idx,SQBool pushval)
{
sq_aux_paramscheck(v, 2);
SQObjectPtr *self;
_GETSAFE_OBJ(v, idx, OT_TABLE,self);
SQObjectPtr &key = v->GetUp(-1);
SQObjectPtr t;
if(_table(*self)->Get(key,t)) {
_table(*self)->Remove(key);
}
if(pushval != 0)
v->GetUp(-1) = t;
else
v->Pop();
return SQ_OK;
}
SQRESULT sq_getdelegate(HSQUIRRELVM v,SQInteger idx)
{
SQObjectPtr &self=stack_get(v,idx);
switch(type(self)){
case OT_TABLE:
case OT_USERDATA:
if(!_delegable(self)->_delegate){
v->PushNull();
break;
}
v->Push(SQObjectPtr(_delegable(self)->_delegate));
break;
default: return sq_throwerror(v,_SC("wrong type")); break;
}
return SQ_OK;
}
SQRESULT sq_get(HSQUIRRELVM v,SQInteger idx)
{
SQObjectPtr &self=stack_get(v,idx);
if(v->Get(self,v->GetUp(-1),v->GetUp(-1),false,DONT_FALL_BACK))
return SQ_OK;
v->Pop();
return SQ_ERROR;
}
SQRESULT sq_rawget(HSQUIRRELVM v,SQInteger idx)
{
SQObjectPtr &self=stack_get(v,idx);
switch(type(self)) {
case OT_TABLE:
if(_table(self)->Get(v->GetUp(-1),v->GetUp(-1)))
return SQ_OK;
break;
case OT_CLASS:
if(_class(self)->Get(v->GetUp(-1),v->GetUp(-1)))
return SQ_OK;
break;
case OT_INSTANCE:
if(_instance(self)->Get(v->GetUp(-1),v->GetUp(-1)))
return SQ_OK;
break;
case OT_ARRAY:{
SQObjectPtr& key = v->GetUp(-1);
if(sq_isnumeric(key)){
if(_array(self)->Get(tointeger(key),v->GetUp(-1))) {
return SQ_OK;
}
}
else {
v->Pop();
return sq_throwerror(v,_SC("invalid index type for an array"));
}
}
break;
default:
v->Pop();
return sq_throwerror(v,_SC("rawget works only on array/table/instance and class"));
}
v->Pop();
return sq_throwerror(v,_SC("the index doesn't exist"));
}
SQRESULT sq_getstackobj(HSQUIRRELVM v,SQInteger idx,HSQOBJECT *po)
{
*po=stack_get(v,idx);
return SQ_OK;
}
const SQChar *sq_getlocal(HSQUIRRELVM v,SQUnsignedInteger level,SQUnsignedInteger idx)
{
SQUnsignedInteger cstksize=v->_callsstacksize;
SQUnsignedInteger lvl=(cstksize-level)-1;
SQInteger stackbase=v->_stackbase;
if(lvl<cstksize){
for(SQUnsignedInteger i=0;i<level;i++){
SQVM::CallInfo &ci=v->_callsstack[(cstksize-i)-1];
stackbase-=ci._prevstkbase;
}
SQVM::CallInfo &ci=v->_callsstack[lvl];
if(type(ci._closure)!=OT_CLOSURE)
return NULL;
SQClosure *c=_closure(ci._closure);
SQFunctionProto *func=c->_function;
if(func->_noutervalues > (SQInteger)idx) {
v->Push(*_outer(c->_outervalues[idx])->_valptr);
return _stringval(func->_outervalues[idx]._name);
}
idx -= func->_noutervalues;
return func->GetLocal(v,stackbase,idx,(SQInteger)(ci._ip-func->_instructions)-1);
}
return NULL;
}
void sq_pushobject(HSQUIRRELVM v,HSQOBJECT obj)
{
v->Push(SQObjectPtr(obj));
}
void sq_resetobject(HSQOBJECT *po)
{
po->_unVal.pUserPointer=NULL;po->_type=OT_NULL;
}
SQRESULT sq_throwerror(HSQUIRRELVM v,const SQChar *err)
{
v->_lasterror=SQString::Create(_ss(v),err);
return SQ_ERROR;
}
SQRESULT sq_throwobject(HSQUIRRELVM v)
{
v->_lasterror = v->GetUp(-1);
v->Pop();
return SQ_ERROR;
}
void sq_reseterror(HSQUIRRELVM v)
{
v->_lasterror.Null();
}
void sq_getlasterror(HSQUIRRELVM v)
{
v->Push(v->_lasterror);
}
SQRESULT sq_reservestack(HSQUIRRELVM v,SQInteger nsize)
{
if (((SQUnsignedInteger)v->_top + nsize) > v->_stack.size()) {
if(v->_nmetamethodscall) {
return sq_throwerror(v,_SC("cannot resize stack while in a metamethod"));
}
v->_stack.resize(v->_stack.size() + ((v->_top + nsize) - v->_stack.size()));
}
return SQ_OK;
}
SQRESULT sq_resume(HSQUIRRELVM v,SQBool retval,SQBool raiseerror)
{
if(type(v->GetUp(-1))==OT_GENERATOR){
v->PushNull(); //retval
if(!v->Execute(v->GetUp(-2),0,v->_top,v->GetUp(-1),raiseerror,SQVM::ET_RESUME_GENERATOR))
{v->Raise_Error(v->_lasterror); return SQ_ERROR;}
if(!retval)
v->Pop();
return SQ_OK;
}
return sq_throwerror(v,_SC("only generators can be resumed"));
}
SQRESULT sq_call(HSQUIRRELVM v,SQInteger params,SQBool retval,SQBool raiseerror)
{
SQObjectPtr res;
if(v->Call(v->GetUp(-(params+1)),params,v->_top-params,res,raiseerror?true:false)){
if(!v->_suspended) {
v->Pop(params);//pop closure and args
}
if(retval){
v->Push(res); return SQ_OK;
}
return SQ_OK;
}
else {
v->Pop(params);
return SQ_ERROR;
}
if(!v->_suspended)
v->Pop(params);
return sq_throwerror(v,_SC("call failed"));
}
SQRESULT sq_suspendvm(HSQUIRRELVM v)
{
return v->Suspend();
}
SQRESULT sq_wakeupvm(HSQUIRRELVM v,SQBool wakeupret,SQBool retval,SQBool raiseerror,SQBool throwerror)
{
SQObjectPtr ret;
if(!v->_suspended)
return sq_throwerror(v,_SC("cannot resume a vm that is not running any code"));
SQInteger target = v->_suspended_target;
if(wakeupret) {
if(target != -1) {
v->GetAt(v->_stackbase+v->_suspended_target)=v->GetUp(-1); //retval
}
v->Pop();
} else if(target != -1) { v->GetAt(v->_stackbase+v->_suspended_target).Null(); }
SQObjectPtr dummy;
if(!v->Execute(dummy,-1,-1,ret,raiseerror,throwerror?SQVM::ET_RESUME_THROW_VM : SQVM::ET_RESUME_VM)) {
return SQ_ERROR;
}
if(retval)
v->Push(ret);
return SQ_OK;
}
void sq_setreleasehook(HSQUIRRELVM v,SQInteger idx,SQRELEASEHOOK hook)
{
if(sq_gettop(v) >= 1){
SQObjectPtr &ud=stack_get(v,idx);
switch( type(ud) ) {
case OT_USERDATA: _userdata(ud)->_hook = hook; break;
case OT_INSTANCE: _instance(ud)->_hook = hook; break;
case OT_CLASS: _class(ud)->_hook = hook; break;
default: break; //shutup compiler
}
}
}
void sq_setcompilererrorhandler(HSQUIRRELVM v,SQCOMPILERERROR f)
{
_ss(v)->_compilererrorhandler = f;
}
SQRESULT sq_writeclosure(HSQUIRRELVM v,SQWRITEFUNC w,SQUserPointer up)
{
SQObjectPtr *o = NULL;
_GETSAFE_OBJ(v, -1, OT_CLOSURE,o);
unsigned short tag = SQ_BYTECODE_STREAM_TAG;
if(w(up,&tag,2) != 2)
return sq_throwerror(v,_SC("io error"));
if(!_closure(*o)->Save(v,up,w))
return SQ_ERROR;
return SQ_OK;
}
SQRESULT sq_readclosure(HSQUIRRELVM v,SQREADFUNC r,SQUserPointer up)
{
SQObjectPtr closure;
unsigned short tag;
if(r(up,&tag,2) != 2)
return sq_throwerror(v,_SC("io error"));
if(tag != SQ_BYTECODE_STREAM_TAG)
return sq_throwerror(v,_SC("invalid stream"));
if(!SQClosure::Load(v,up,r,closure))
return SQ_ERROR;
v->Push(closure);
return SQ_OK;
}
SQChar *sq_getscratchpad(HSQUIRRELVM v,SQInteger minsize)
{
return _ss(v)->GetScratchPad(minsize);
}
SQRESULT sq_resurrectunreachable(HSQUIRRELVM v)
{
#ifndef NO_GARBAGE_COLLECTOR
_ss(v)->ResurrectUnreachable(v);
return SQ_OK;
#else
return sq_throwerror(v,_SC("sq_resurrectunreachable requires a garbage collector build"));
#endif
}
SQInteger sq_collectgarbage(HSQUIRRELVM v)
{
#ifndef NO_GARBAGE_COLLECTOR
return _ss(v)->CollectGarbage(v);
#else
return -1;
#endif
}
SQRESULT sq_getcallee(HSQUIRRELVM v)
{
if(v->_callsstacksize > 1)
{
v->Push(v->_callsstack[v->_callsstacksize - 2]._closure);
return SQ_OK;
}
return sq_throwerror(v,_SC("no closure in the calls stack"));
}
const SQChar *sq_getfreevariable(HSQUIRRELVM v,SQInteger idx,SQUnsignedInteger nval)
{
SQObjectPtr &self=stack_get(v,idx);
const SQChar *name = NULL;
switch(type(self))
{
case OT_CLOSURE:{
SQClosure *clo = _closure(self);
SQFunctionProto *fp = clo->_function;
if(((SQUnsignedInteger)fp->_noutervalues) > nval) {
v->Push(*(_outer(clo->_outervalues[nval])->_valptr));
SQOuterVar &ov = fp->_outervalues[nval];
name = _stringval(ov._name);
}
}
break;
case OT_NATIVECLOSURE:{
SQNativeClosure *clo = _nativeclosure(self);
if(clo->_noutervalues > nval) {
v->Push(clo->_outervalues[nval]);
name = _SC("@NATIVE");
}
}
break;
default: break; //shutup compiler
}
return name;
}
SQRESULT sq_setfreevariable(HSQUIRRELVM v,SQInteger idx,SQUnsignedInteger nval)
{
SQObjectPtr &self=stack_get(v,idx);
switch(type(self))
{
case OT_CLOSURE:{
SQFunctionProto *fp = _closure(self)->_function;
if(((SQUnsignedInteger)fp->_noutervalues) > nval){
*(_outer(_closure(self)->_outervalues[nval])->_valptr) = stack_get(v,-1);
}
else return sq_throwerror(v,_SC("invalid free var index"));
}
break;
case OT_NATIVECLOSURE:
if(_nativeclosure(self)->_noutervalues > nval){
_nativeclosure(self)->_outervalues[nval] = stack_get(v,-1);
}
else return sq_throwerror(v,_SC("invalid free var index"));
break;
default:
return sq_aux_invalidtype(v,type(self));
}
v->Pop();
return SQ_OK;
}
SQRESULT sq_setattributes(HSQUIRRELVM v,SQInteger idx)
{
SQObjectPtr *o = NULL;
_GETSAFE_OBJ(v, idx, OT_CLASS,o);
SQObjectPtr &key = stack_get(v,-2);
SQObjectPtr &val = stack_get(v,-1);
SQObjectPtr attrs;
if(type(key) == OT_NULL) {
attrs = _class(*o)->_attributes;
_class(*o)->_attributes = val;
v->Pop(2);
v->Push(attrs);
return SQ_OK;
}else if(_class(*o)->GetAttributes(key,attrs)) {
_class(*o)->SetAttributes(key,val);
v->Pop(2);
v->Push(attrs);
return SQ_OK;
}
return sq_throwerror(v,_SC("wrong index"));
}
SQRESULT sq_getattributes(HSQUIRRELVM v,SQInteger idx)
{
SQObjectPtr *o = NULL;
_GETSAFE_OBJ(v, idx, OT_CLASS,o);
SQObjectPtr &key = stack_get(v,-1);
SQObjectPtr attrs;
if(type(key) == OT_NULL) {
attrs = _class(*o)->_attributes;
v->Pop();
v->Push(attrs);
return SQ_OK;
}
else if(_class(*o)->GetAttributes(key,attrs)) {
v->Pop();
v->Push(attrs);
return SQ_OK;
}
return sq_throwerror(v,_SC("wrong index"));
}
SQRESULT sq_getmemberhandle(HSQUIRRELVM v,SQInteger idx,HSQMEMBERHANDLE *handle)
{
SQObjectPtr *o = NULL;
_GETSAFE_OBJ(v, idx, OT_CLASS,o);
SQObjectPtr &key = stack_get(v,-1);
SQTable *m = _class(*o)->_members;
SQObjectPtr val;
if(m->Get(key,val)) {
handle->_static = _isfield(val) ? SQFalse : SQTrue;
handle->_index = _member_idx(val);
v->Pop();
return SQ_OK;
}
return sq_throwerror(v,_SC("wrong index"));
}
SQRESULT _getmemberbyhandle(HSQUIRRELVM v,SQObjectPtr &self,HSQMEMBERHANDLE *handle,SQObjectPtr *&val)
{
switch(type(self)) {
case OT_INSTANCE: {
SQInstance *i = _instance(self);
if(handle->_static) {
SQClass *c = i->_class;
val = &c->_methods[handle->_index].val;
}
else {
val = &i->_values[handle->_index];
}
}
break;
case OT_CLASS: {
SQClass *c = _class(self);
if(handle->_static) {
val = &c->_methods[handle->_index].val;
}
else {
val = &c->_defaultvalues[handle->_index].val;
}
}
break;
default:
return sq_throwerror(v,_SC("wrong type(expected class or instance)"));
}
return SQ_OK;
}
SQRESULT sq_getbyhandle(HSQUIRRELVM v,SQInteger idx,HSQMEMBERHANDLE *handle)
{
SQObjectPtr &self = stack_get(v,idx);
SQObjectPtr *val = NULL;
if(SQ_FAILED(_getmemberbyhandle(v,self,handle,val))) {
return SQ_ERROR;
}
v->Push(_realval(*val));
return SQ_OK;
}
SQRESULT sq_setbyhandle(HSQUIRRELVM v,SQInteger idx,HSQMEMBERHANDLE *handle)
{
SQObjectPtr &self = stack_get(v,idx);
SQObjectPtr &newval = stack_get(v,-1);
SQObjectPtr *val = NULL;
if(SQ_FAILED(_getmemberbyhandle(v,self,handle,val))) {
return SQ_ERROR;
}
*val = newval;
v->Pop();
return SQ_OK;
}
SQRESULT sq_getbase(HSQUIRRELVM v,SQInteger idx)
{
SQObjectPtr *o = NULL;
_GETSAFE_OBJ(v, idx, OT_CLASS,o);
if(_class(*o)->_base)
v->Push(SQObjectPtr(_class(*o)->_base));
else
v->PushNull();
return SQ_OK;
}
SQRESULT sq_getclass(HSQUIRRELVM v,SQInteger idx)
{
SQObjectPtr *o = NULL;
_GETSAFE_OBJ(v, idx, OT_INSTANCE,o);
v->Push(SQObjectPtr(_instance(*o)->_class));
return SQ_OK;
}
SQRESULT sq_createinstance(HSQUIRRELVM v,SQInteger idx)
{
SQObjectPtr *o = NULL;
_GETSAFE_OBJ(v, idx, OT_CLASS,o);
v->Push(_class(*o)->CreateInstance());
return SQ_OK;
}
void sq_weakref(HSQUIRRELVM v,SQInteger idx)
{
SQObject &o=stack_get(v,idx);
if(ISREFCOUNTED(type(o))) {
v->Push(_refcounted(o)->GetWeakRef(type(o)));
return;
}
v->Push(o);
}
SQRESULT sq_getweakrefval(HSQUIRRELVM v,SQInteger idx)
{
SQObjectPtr &o = stack_get(v,idx);
if(type(o) != OT_WEAKREF) {
return sq_throwerror(v,_SC("the object must be a weakref"));
}
v->Push(_weakref(o)->_obj);
return SQ_OK;
}
SQRESULT sq_getdefaultdelegate(HSQUIRRELVM v,SQObjectType t)
{
SQSharedState *ss = _ss(v);
switch(t) {
case OT_TABLE: v->Push(ss->_table_default_delegate); break;
case OT_ARRAY: v->Push(ss->_array_default_delegate); break;
case OT_STRING: v->Push(ss->_string_default_delegate); break;
case OT_INTEGER: case OT_FLOAT: v->Push(ss->_number_default_delegate); break;
case OT_GENERATOR: v->Push(ss->_generator_default_delegate); break;
case OT_CLOSURE: case OT_NATIVECLOSURE: v->Push(ss->_closure_default_delegate); break;
case OT_THREAD: v->Push(ss->_thread_default_delegate); break;
case OT_CLASS: v->Push(ss->_class_default_delegate); break;
case OT_INSTANCE: v->Push(ss->_instance_default_delegate); break;
case OT_WEAKREF: v->Push(ss->_weakref_default_delegate); break;
default: return sq_throwerror(v,_SC("the type doesn't have a default delegate"));
}
return SQ_OK;
}
SQRESULT sq_next(HSQUIRRELVM v,SQInteger idx)
{
SQObjectPtr o=stack_get(v,idx),&refpos = stack_get(v,-1),realkey,val;
if(type(o) == OT_GENERATOR) {
return sq_throwerror(v,_SC("cannot iterate a generator"));
}
int faketojump;
if(!v->FOREACH_OP(o,realkey,val,refpos,0,666,faketojump))
return SQ_ERROR;
if(faketojump != 666) {
v->Push(realkey);
v->Push(val);
return SQ_OK;
}
return SQ_ERROR;
}
struct BufState{
const SQChar *buf;
SQInteger ptr;
SQInteger size;
};
SQInteger buf_lexfeed(SQUserPointer file)
{
BufState *buf=(BufState*)file;
if(buf->size<(buf->ptr+1))
return 0;
return buf->buf[buf->ptr++];
}
SQRESULT sq_compilebuffer(HSQUIRRELVM v,const SQChar *s,SQInteger size,const SQChar *sourcename,SQBool raiseerror) {
BufState buf;
buf.buf = s;
buf.size = size;
buf.ptr = 0;
return sq_compile(v, buf_lexfeed, &buf, sourcename, raiseerror);
}
void sq_move(HSQUIRRELVM dest,HSQUIRRELVM src,SQInteger idx)
{
dest->Push(stack_get(src,idx));
}
void sq_setprintfunc(HSQUIRRELVM v, SQPRINTFUNCTION printfunc,SQPRINTFUNCTION errfunc)
{
_ss(v)->_printfunc = printfunc;
_ss(v)->_errorfunc = errfunc;
}
SQPRINTFUNCTION sq_getprintfunc(HSQUIRRELVM v)
{
return _ss(v)->_printfunc;
}
SQPRINTFUNCTION sq_geterrorfunc(HSQUIRRELVM v)
{
return _ss(v)->_errorfunc;
}
void *sq_malloc(SQUnsignedInteger size)
{
return SQ_MALLOC(size);
}
void *sq_realloc(void* p,SQUnsignedInteger oldsize,SQUnsignedInteger newsize)
{
return SQ_REALLOC(p,oldsize,newsize);
}
void sq_free(void *p,SQUnsignedInteger size)
{
SQ_FREE(p,size);
}