Convert to void pointer

[Ranvi]

Hi,

I need some help in converting the struct pointer to void pointer, since I do not want to expose the whole structure coming from one interface to the other.

I need some help in coding callSetInt() and callSetString() methods in the below code. The set() method hides the structures and just sends a void pointer.

[/code] #include <iostream>
#include <string>
using namespace std;

typedef struct AttrValue {
union {
int32_t i32;
int16_t i16;
char* theString;
} value;
} AttrValueT;


typedef enum AttrType {
AttrType_INT32 = 1,
AttrType_INT16 = 2,
AttrType_theString = 3
} AttrTypeT;


typedef struct AttrValueContainer {
AttrType type;
unsigned int nrOfValues;
struct AttrValue *values;
} AttrValueContainerT;

/* ##################################################################################
* */

void callSetInt (int noOfVal, void *p)
{
// decode the void pointer based on number of values.
// for simpler test, i32 is considered.

int* p1 = static_cast<int*>(p);

for (int i=0; i< noOfVal; ++i)
{
cout << *(p1+i)<<endl;
}

//Note that *(p1+0) works and not others... Needs to solve this

}

void callSetString(int noOfVal, void *p)
{
cout <<"in call set string"<<endl;
cout <<static_cast<char*>(p); //doesn't work..

}

void set ( AttrValueContainerT *val)
{
int n = val->nrOfValues;
int type = (int)val->type;

//send it as a void pointer to hide the structs from the inner classes
void *p = val->values;

if (type == 3)
{
callSetString(n, p);
}
else
{
callSetInt(n, p);
}
}

/* ##################################################################################3*/

int main()
{
// test for set() method
AttrValueContainerT va1, val2;

val1.nrOfValues = 2;
val1.type = (AttrType)1;
val1.values = new AttrValue[val1.nrOfValues];
val1.values[0].value.i32 = 888;
val1.values[1].value.i32 = 999;
set(&val1);


val2.nrOfValues = 2;
val2.type = (AttrType)3;
val2.values = new AttrValue[val2.nrOfValues];
val2.values[0].value.theString = "cat";
val2.values[1].value.theString = "mat";
set(&val2);

return 0;
}
[code]