#include "sqplus.h"
#include <stdio.h>
#ifdef SQPLUS_SMARTPOINTER_OPT
#define SQPLUS_SMARTPOINTER_CPP_DECLARATION
#include "SqPlusSmartPointer.h"
#endif
namespace SqPlus {
static int getVarInfo(StackHandler & sa,VarRefPtr & vr) {
HSQOBJECT htable = sa.GetObjectHandle(1);
SquirrelObject table(htable);
const SQChar * el = sa.GetString(2);
ScriptStringVar256 varNameTag;
getVarNameTag(varNameTag,sizeof(varNameTag),el);
SQUserPointer data=0;
if (!table.RawGetUserData(varNameTag,&data)) {
return sa.ThrowError(_SC("getVarInfo: Could not retrieve UserData")); // Results in variable not being found error.
}
vr = (VarRefPtr)data;
return SQ_OK;
} // getVarInfo
static int getInstanceVarInfo(StackHandler & sa,VarRefPtr & vr,SQUserPointer & data) {
HSQOBJECT ho = sa.GetObjectHandle(1);
SquirrelObject instance(ho);
const SQChar * el = sa.GetString(2);
ScriptStringVar256 varNameTag;
getVarNameTag(varNameTag,sizeof(varNameTag),el);
SQUserPointer ivrData=0;
if (!instance.RawGetUserData(varNameTag,&ivrData)) {
return sa.ThrowError(_SC("getInstanceVarInfo: Could not retrieve UserData")); // Results in variable not being found error.
}
vr = (VarRefPtr)ivrData;
char * up;
if (!(vr->m_access & (VAR_ACCESS_STATIC|VAR_ACCESS_CONSTANT))) {
SQUserPointer typetag;
instance.GetTypeTag(&typetag);
#if defined(SQ_USE_CLASS_INHERITANCE)
if (typetag != vr->instanceType) {
SquirrelObject typeTable = instance.GetValue(SQ_CLASS_OBJECT_TABLE_NAME);
up = (char *)typeTable.GetUserPointer(INT((size_t)vr->instanceType)); // <TODO> 64-bit compatible version.
if (!up) {
throw SquirrelError(_SC("Invalid Instance Type"));
}
} else {
up = (char *)instance.GetInstanceUP(0);
} // if
#elif defined(SQ_USE_CLASS_INHERITANCE_SIMPLE)
ClassTypeBase *ctb = (ClassTypeBase*)vr->instanceType;
up = (char *)instance.GetInstanceUP(0);
// Walk base classes until type tag match, adjust for inheritence offset
while(ctb && typetag!=ctb) {
up = (char*)up - ctb->m_offset;
ctb = ctb->m_pbase;
}
if (!ctb) {
throw SquirrelError(_SC("Invalid Instance Type"));
}
#else
up = (char *)instance.GetInstanceUP(0);
#endif
#ifdef SQPLUS_SMARTPOINTER_OPT
#define SQPLUS_SMARTPOINTER_INSTANCE_VARINFO
#include "SqPlusSmartPointer.h"
#endif
up += (size_t)vr->offsetOrAddrOrConst; // Offset
} else {
up = (char *)vr->offsetOrAddrOrConst; // Address
} // if
data = up;
return SQ_OK;
} // getInstanceVarInfo
// If not static/global, message can (and will) disappear before arriving at catch (G++)
static ScriptStringVar256 g_msg_throw;
static int setVar(StackHandler & sa,VarRef * vr,void * data) {
if (vr->m_access & (VAR_ACCESS_READ_ONLY|VAR_ACCESS_CONSTANT)) {
const SQChar * el = sa.GetString(2);
SCSNPRINTF(g_msg_throw.s,sizeof(g_msg_throw),_SC("setVar(): Cannot write to constant: %s"),el);
throw SquirrelError(g_msg_throw.s);
} // if
switch (vr->m_type) {
case TypeInfo<INT>::TypeID: {
INT * val = (INT *)data; // Address
if (val) {
INT v = sa.GetInt(3);
// Support for different int sizes
switch( vr->m_size ) {
case 1: v = (*(char*)val = (char)v); break;
case 2: v = (*(short*)val = (short)v); break;
#ifdef _SQ64
case 4: v = (*(int*)val = (int)v); break;
#endif
default: *val = v;
}
return sa.Return(v);
} // if
break;
} // case
case TypeInfo<unsigned>::TypeID: {
unsigned * val = (unsigned *)data; // Address
if (val) {
*val = sa.GetInt(3);
return sa.Return(static_cast<INT>(*val));
} // if
break;
} // case
case TypeInfo<FLOAT>::TypeID: {
FLOAT * val = (FLOAT *)data; // Address
if (val) {
*val = sa.GetFloat(3);
return sa.Return(*val);
} // if
break;
} // case
case TypeInfo<bool>::TypeID: {
bool * val = (bool *)data; // Address
if (val) {
*val = sa.GetBool(3) ? true : false;
return sa.Return(*val);
} // if
break;
} // case
case VAR_TYPE_INSTANCE: {
HSQUIRRELVM v = sa.GetVMPtr();
SQUserPointer src = sa.GetInstanceUp(3,(SQUserPointer)vr->varType); // Effectively performs: ClassType<>::type() == ClassType<>().
if (!src) {
throw SquirrelError(_SC("INSTANCE type assignment mismatch"));
}
vr->varType->vgetCopyFunc()(data,src);
return 0;
}
case TypeInfo<SQUserPointer>::TypeID: {
const SQChar * el = sa.GetString(2);
SCSNPRINTF(g_msg_throw.s,sizeof(g_msg_throw),_SC("setVar(): Cannot write to an SQUserPointer: %s"),el);
throw SquirrelError(g_msg_throw.s);
} // case
case TypeInfo<ScriptStringVarBase>::TypeID: {
ScriptStringVarBase * val = (ScriptStringVarBase *)data; // Address
if (val) {
const SQChar * strVal = sa.GetString(3);
if (strVal) {
*val = strVal;
return sa.Return(val->s);
} // if
} // if
break;
} // case
#if defined(SQPLUS_SUPPORT_STD_STRING) && !defined(SQUNICODE)
case TypeInfo<std::string>::TypeID: {
std::string *val = (std::string*)data; // Address
if (val) {
const SQChar *strVal = sa.GetString(3);
if (strVal) {
*val = strVal;
return sa.Return(val->c_str());
} // if
} // if
break;
} // case
#endif
} // switch
return SQ_ERROR;
} // setVar
static int getVar(StackHandler & sa,VarRef * vr,void * data) {
switch (vr->m_type) {
case TypeInfo<INT>::TypeID: {
if (!(vr->m_access & VAR_ACCESS_CONSTANT)) {
if (data) {
INT v;
// Support for different int sizes
switch( vr->m_size ){
case 1: v = *(char*)data; break;
case 2: v = *(short*)data; break;
#ifdef _SQ64
case 4: v = *(int*)data; break;
#endif
default: v = *(INT*)data;
}
return sa.Return(v);
} // if
} else {
INT * val = (INT *)&data; // Constant value
return sa.Return(*val);
} // if
break;
} // case
case TypeInfo<unsigned>::TypeID: {
if (!(vr->m_access & VAR_ACCESS_CONSTANT)) {
unsigned * val = (unsigned *)data; // Address
if (val){
return sa.Return(static_cast<INT>(*val));
}
} else {
unsigned * val = (unsigned *)&data; // Constant value
return sa.Return(static_cast<INT>(*val));
} // if
break;
} // case
case TypeInfo<FLOAT>::TypeID: {
if (!(vr->m_access & VAR_ACCESS_CONSTANT)) {
FLOAT * val = (FLOAT *)data; // Address
if (val) {
return sa.Return(*val);
} // if
} else {
FLOAT * val = (FLOAT *)&data; // Constant value
return sa.Return(*val);
} // if
break;
} // case
case TypeInfo<bool>::TypeID: {
if (!(vr->m_access & VAR_ACCESS_CONSTANT)) {
bool * val = (bool *)data; // Address
if (val) {
return sa.Return(*val);
} // if
} else {
bool * val = (bool *)&data; // Constant value
return sa.Return(*val);
} // if
break;
} // case
case VAR_TYPE_INSTANCE:
if (!CreateNativeClassInstance(sa.GetVMPtr(),vr->varType->GetTypeName(),data,0)) { // data = address. Allocates memory.
SCSNPRINTF(g_msg_throw.s,sizeof(g_msg_throw),_SC("getVar(): Could not create instance: %s"),vr->varType->GetTypeName());
throw SquirrelError(g_msg_throw.s);
} // if
return 1;
case TypeInfo<SQUserPointer>::TypeID:
return sa.Return(data); // The address of member variable, not the variable itself.
case TypeInfo<ScriptStringVarBase>::TypeID: {
if (!(vr->m_access & VAR_ACCESS_CONSTANT)) {
ScriptStringVarBase * val = (ScriptStringVarBase *)data; // Address
if (val) {
return sa.Return(val->s);
} // if
} else {
throw SquirrelError(_SC("getVar(): Invalid type+access: 'ScriptStringVarBase' with VAR_ACCESS_CONSTANT (use VAR_ACCESS_READ_ONLY instead)"));
}
break;
} // case
case TypeInfo<const SQChar *>::TypeID: {
if (!(vr->m_access & VAR_ACCESS_CONSTANT)) {
if( vr->m_access==VAR_ACCESS_READ_WRITE )
throw SquirrelError(_SC("getVar(): Invalid type+access: 'const SQChar *' without VAR_ACCESS_CONSTANT"));
// It is OK to read from a SQChar* if requested
return sa.Return(*(const SQChar **)data); // Address
} else {
return sa.Return((const SQChar *)data); // Address
}
break;
} // case
#ifdef SQPLUS_SUPPORT_STD_STRING
case TypeInfo<std::string>::TypeID: {
if (!(vr->m_access & VAR_ACCESS_CONSTANT)) {
std::string *val = (std::string *)data; // Address
if (val) {
return sa.Return(val->c_str());
}
} else {
throw SquirrelError(_SC("getVar(): Invalid type+access: 'std::string' with VAR_ACCESS_CONSTANT (use VAR_ACCESS_READ_ONLY instead)"));
}
break;
} // case
#endif
} // switch
return SQ_ERROR;
} // getVar
// === Global Vars ===
int setVarFunc(HSQUIRRELVM v) {
SquirrelVM::Init(v); // For handling multi-VM setting right
StackHandler sa(v);
if (sa.GetType(1) == OT_TABLE) {
VarRefPtr vr;
int res = getVarInfo(sa,vr);
if (res != SQ_OK) return res;
return setVar(sa,vr,vr->offsetOrAddrOrConst);
} // if
return SQ_ERROR;
} // setVarFunc
int getVarFunc(HSQUIRRELVM v) {
SquirrelVM::Init(v); // For handling multi-VM setting right
StackHandler sa(v);
if (sa.GetType(1) == OT_TABLE) {
VarRefPtr vr;
int res = getVarInfo(sa,vr);
if (res != SQ_OK) return res;
return getVar(sa,vr,vr->offsetOrAddrOrConst);
} // if
return SQ_ERROR;
} // getVarFunc
// === Instance Vars ===
int setInstanceVarFunc(HSQUIRRELVM v) {
SquirrelVM::Init(v); // For handling multi-VM setting right
StackHandler sa(v);
if (sa.GetType(1) == OT_INSTANCE) {
VarRefPtr vr;
void * data;
int res = getInstanceVarInfo(sa,vr,data);
if (res != SQ_OK) return res;
return setVar(sa,vr,data);
} // if
return SQ_ERROR;
} // setInstanceVarFunc
int getInstanceVarFunc(HSQUIRRELVM v) {
SquirrelVM::Init(v); // For handling multi-VM setting right
StackHandler sa(v);
if (sa.GetType(1) == OT_INSTANCE) {
VarRefPtr vr;
void * data;
int res = getInstanceVarInfo(sa,vr,data);
if (res != SQ_OK) return res;
return getVar(sa,vr,data);
} // if
return SQ_ERROR;
} // getInstanceVarFunc
// === Classes ===
BOOL CreateClass(HSQUIRRELVM v,SquirrelObject & newClass,SQUserPointer classType,const SQChar * name,const SQChar * baseName) {
int n = 0;
int oldtop = sq_gettop(v);
sq_pushroottable(v);
sq_pushstring(v,name,-1);
if (baseName) {
sq_pushstring(v,baseName,-1);
if (SQ_FAILED(sq_get(v,-3))) { // Make sure the base exists if specified by baseName.
sq_settop(v,oldtop);
return FALSE;
} // if
} // if
if (SQ_FAILED(sq_newclass(v,baseName ? 1 : 0))) { // Will inherit from base class on stack from sq_get() above.
sq_settop(v,oldtop);
return FALSE;
} // if
newClass.AttachToStackObject(-1);
sq_settypetag(v,-1,classType);
sq_createslot(v,-3);
sq_pop(v,1);
return TRUE;
} // CreateClass
SquirrelObject RegisterClassType(HSQUIRRELVM v,const SQChar * scriptClassName,SQUserPointer classType,SQFUNCTION constructor) {
SquirrelVM::Init(v); // For handling multi-VM setting right
int top = sq_gettop(v);
SquirrelObject newClass;
if (CreateClass(v,newClass,classType,scriptClassName)) {
SquirrelVM::CreateFunction(newClass,constructor,_SC("constructor"));
} // if
sq_settop(v,top);
return newClass;
} // RegisterClassType
///////////////////////////////////////////////////////////////////////////
// GCC sometimes has problems with finding inline functions at link time
// (that also have a template definition). To solve the problem,
// non-inlines goes here.
#ifdef GCC_INLINE_WORKAROUND
# include "SqPlusFunctionCallImpl.h"
#endif // GCC_INLINE_WORKAROUND
///////////////////////////////////////////////////////////////////////////
} // namespace SqPlus
