//-------------------------------------------------------------------
bool cpp_xloper::AsVariant(VARIANT &var)
{
return xloper_to_vt(&m_Op, var, true);
}
//-------------------------------------------------------------------
// Returns true and a Variant equivalent to the passed-in xloper, or
// false if xloper's type could not be converted.
//-------------------------------------------------------------------
bool xloper_to_vt(const xloper *p_op, VARIANT &var, bool convert_array)
{
VariantInit(&var); // type is set to VT_EMPTY
switch(p_op->xltype)
{
case xltypeNum:
var.vt = VT_R8;
var.dblVal = p_op->val.num;
break;
case xltypeInt:
var.vt = VT_I2;
var.iVal = p_op->val.w;
break;
case xltypeBool:
var.vt = VT_BOOL;
var.boolVal = p_op->val.xbool;
break;
case xltypeStr:
var.vt = VT_BSTR;
var.bstrVal = xlstring_to_vt_bstr(p_op->val.str);
break;
case xltypeErr:
var.vt = VT_ERROR;
var.ulVal = VT_XL_ERR_OFFSET + p_op->val.err;
break;
case xltypeMulti:
if(convert_array)
{
VARIANT temp_vt;
SAFEARRAYBOUND bound[2];
long elt_index[2];
bound[0].lLbound = bound[1].lLbound = 0;
bound[0].cElements = p_op->val.array.rows;
bound[1].cElements = p_op->val.array.columns;
var.vt = VT_ARRAY | VT_VARIANT; // array of Variants
var.parray = SafeArrayCreate(VT_VARIANT, 2, bound);
if(!var.parray)
return false;
xloper *p_op_temp = p_op->val.array.lparray;
for(WORD r = 0; r < p_op->val.array.rows; r++)
{
for(WORD c = 0; c < p_op->val.array.columns;)
{
// Call with last arg false, so not to convert array within array
xloper_to_vt(p_op_temp++, temp_vt, false);
elt_index[0] = r;
elt_index[1] = c++;
SafeArrayPutElement(var.parray, elt_index, &temp_vt);
}
}
break;
}
// else, fall through to default option
default: // type not converted
return false;
}
return true;
}