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/*
* Compile with:
* gcc -o eina_model_01 eina_model_01.c `pkg-config --cflags --libs eina`
*/
/*
* This example demonstrates the usage of Eina Model by implementing
* Bank Account Class, which is inherited from Base Class;
* and Credit Card Class, which is inherited from Bank Account Class.
*
* Base Class(Eina_Model_Type) --> Bank Account Class --> Credit Card Class
*
* Bank Account Class implements "bank_account_data_set()" and "print()" methods;
* Credit Card Class inherits these two and implements "credit_card_data_set()"
*
*
* Bank Account Class::print() calls for "_bank_account_data_print"
* Credit Card Class ::print() is reloaded with "_credit_card_data_print()"
* which calls for parent function "_bank_account_data_print"
*
*/
#include <Eina.h>
#include <eina_safety_checks.h>
/*
* Defining type for new model type
* Model will have two methods
*/
typedef struct _Bank_Account_Type
{
Eina_Model_Type parent_class;
void (*bank_account_data_set)(Eina_Model *, const char *name, const char *number);
void (*print)(Eina_Model *);
} Bank_Account_Type;
/*
* Defining type for Bank Account private data
*/
typedef struct _Bank_Account_Data
{
char name[30];
char number[30];
} Bank_Account_Data;
/*
* Defining type for Credit Card model type, which will be inherited from Bank Account model type
* Model will have two parent's methods and additional one
*/
typedef struct _Credit_Card_Type
{
Bank_Account_Type parent_class;
void (*credit_card_data_set)(Eina_Model *, const char *, const char *, int) ;
} Credit_Card_Type;
/*
* Defining type for Credit Card private data
*/
typedef struct _Credit_Card_Data
{
char number[30];
char expiry_date[30];
int pin;
} Credit_Card_Data;
static Bank_Account_Type _BANK_ACCOUNT_TYPE;
static Credit_Card_Type _CREDIT_CARD_TYPE;
static Eina_Model_Type *BANK_ACCOUNT_TYPE = (Eina_Model_Type *) &_BANK_ACCOUNT_TYPE;
static Eina_Model_Type *CREDIT_CARD_TYPE = (Eina_Model_Type *) &_CREDIT_CARD_TYPE;
/*
* Defining method for for Bank Account data
*/
static void
_bank_account_data_set(Eina_Model *mdl, const char *name, const char *number)
{
Bank_Account_Data *bdata = eina_model_type_private_data_get(mdl, BANK_ACCOUNT_TYPE);
if (!bdata)
printf("ERROR\n");
if (name != NULL)
{
strncpy(bdata->name, name, sizeof(bdata->name));
bdata->name[sizeof(bdata->number) - 1] = '\0';
}
if (number != NULL)
{
strncpy(bdata->number, number, sizeof(bdata->number));
bdata->number[sizeof(bdata->number) - 1] = '\0';
}
printf("%s :: %s %p\n", eina_model_type_name_get(eina_model_type_get(mdl)) ,__func__, mdl);
}
static void
_credit_card_data_set(Eina_Model *mdl, const char *number, const char *expiry_date, int pin)
{
Credit_Card_Data *cdata = eina_model_type_private_data_get(mdl, CREDIT_CARD_TYPE);
if (!cdata)
printf("ERROR\n");
if (number != NULL)
{
strncpy(cdata->number, number, sizeof(cdata->number));
cdata->number[sizeof(cdata->number) - 1] = '\0';
}
if (expiry_date != NULL)
{
strncpy(cdata->expiry_date, expiry_date, sizeof(cdata->expiry_date));
cdata->expiry_date[sizeof(cdata->expiry_date) - 1] = '\0';
}
cdata->pin = pin;
printf("%s :: %s %p\n", eina_model_type_name_get(eina_model_type_get(mdl)) ,__func__, mdl);
}
static void
_bank_account_data_print(Eina_Model *mdl)
{
const Bank_Account_Data *bdata = eina_model_type_private_data_get(mdl, BANK_ACCOUNT_TYPE);
printf("\n%s :: %s %p \n\tName: %s(%p)\n\tAccount: %s(%p)\n", eina_model_type_name_get(eina_model_type_get(mdl)) ,__func__, mdl
, bdata->name, bdata->name, bdata->number, bdata->number);
}
static void
_credit_card_data_print(Eina_Model *mdl)
{
void (*pf)(Eina_Model *);
const Eina_Model_Type *ptype = eina_model_type_parent_get(eina_model_type_get(mdl));
//const Eina_Model_Type *ptype = eina_model_type_get(mdl);
pf = eina_model_type_method_resolve(ptype, mdl, Bank_Account_Type, print);
if (pf)
pf(mdl);
else
printf("ERROR: %d", __LINE__);
const Credit_Card_Data *cdata = eina_model_type_private_data_get(mdl, CREDIT_CARD_TYPE);
printf("%s :: %s %p \n\tNumber: %s(%p)\n\tCC Expiry Date: %s(%p)\n\tCC PIN: %d(%p)\n", eina_model_type_name_get(eina_model_type_get(mdl)) ,__func__, mdl
, cdata->number, cdata->number, cdata->expiry_date, cdata->expiry_date, cdata->pin, &cdata->pin);
}
#define BANK_ACCOUNT(x) ((Bank_Account_Type *) x)
#define CREDIT_CARD(x) ((Credit_Card_Type *) x)
void
bank_account_data_set(Eina_Model *mdl, const char *name, char *number)
{
EINA_SAFETY_ON_FALSE_RETURN(eina_model_instance_check(mdl, BANK_ACCOUNT_TYPE));
void (*pf)(Eina_Model *, const char *, const char *);
pf = eina_model_method_resolve(mdl, Bank_Account_Type, bank_account_data_set);
if (pf)
pf(mdl, name, number);
else
printf("ERROR %d\n", __LINE__);
}
void
data_print(Eina_Model *mdl)
{
EINA_SAFETY_ON_FALSE_RETURN(eina_model_instance_check(mdl, BANK_ACCOUNT_TYPE));
void (*pf)(Eina_Model *);
pf = eina_model_method_resolve(mdl, Bank_Account_Type, print);
if (pf)
pf(mdl);
else
printf("ERROR %d\n", __LINE__);
}
void
credit_card_data_set(Eina_Model *mdl, const char *number, const char *expiry_date, int pin)
{
EINA_SAFETY_ON_FALSE_RETURN(eina_model_instance_check(mdl, CREDIT_CARD_TYPE));
void (*pf)(Eina_Model *, const char *, const char *, int);
pf = eina_model_method_resolve(mdl, Credit_Card_Type, credit_card_data_set);
if (pf)
pf(mdl, number, expiry_date, pin);
else
printf("ERROR %d\n", __LINE__);
}
int main(void)
{
Eina_Model *b, *cc;
eina_init();
memset(&_BANK_ACCOUNT_TYPE, 0, sizeof(_BANK_ACCOUNT_TYPE));
memset(&_CREDIT_CARD_TYPE, 0, sizeof(_CREDIT_CARD_TYPE));
BANK_ACCOUNT_TYPE->version = EINA_MODEL_TYPE_VERSION;
BANK_ACCOUNT_TYPE->type_size = sizeof(Bank_Account_Type);
BANK_ACCOUNT_TYPE->private_size = sizeof(Bank_Account_Data);
BANK_ACCOUNT_TYPE->name = "Bank_Account_Model";
BANK_ACCOUNT_TYPE->parent = EINA_MODEL_TYPE_GENERIC;
BANK_ACCOUNT(BANK_ACCOUNT_TYPE)->bank_account_data_set = _bank_account_data_set;
BANK_ACCOUNT(BANK_ACCOUNT_TYPE)->print = _bank_account_data_print;
CREDIT_CARD_TYPE->version = EINA_MODEL_TYPE_VERSION;
CREDIT_CARD_TYPE->type_size = sizeof(Credit_Card_Type);
CREDIT_CARD_TYPE->private_size = sizeof(Credit_Card_Data);
CREDIT_CARD_TYPE->name = "Credit_Card_Model";
CREDIT_CARD_TYPE->parent = BANK_ACCOUNT_TYPE;
CREDIT_CARD(CREDIT_CARD_TYPE)->credit_card_data_set = _credit_card_data_set;
BANK_ACCOUNT(CREDIT_CARD_TYPE)->print = _credit_card_data_print;
b = eina_model_new(BANK_ACCOUNT_TYPE); //creating object of bank class
cc = eina_model_new(CREDIT_CARD_TYPE); //creating object of credit card class
bank_account_data_set(b, "Bill Clark", "8569214756");
bank_account_data_set(cc, "John Smith", "3154789");
credit_card_data_set(cc, "5803 6589 4786 3279 9173", "01/01/2015", 1234);
data_print(b);
data_print(cc);
eina_model_unref(b);
eina_model_unref(cc);
eina_shutdown();
return 0;
}
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