int main()
{
struct Stack * s = Stack_create(true);
Stack_push(s, Obj_bool_create(true));
Stack_push(s, Obj_char_create('A'));
Stack_push(s, Obj_int_create(42));
Stack_push(s, Obj_double_create(1234.5678));
printf("POP %f\n", *(double*)Stack_pop(s));
printf("POP %d\n", *(int*)Stack_pop(s));
printf("TOP %c\n", *(char*)Stack_top(s));
printf("TOP %c\n", *(char*)Stack_top(s));
Stack_clear(s);
printf("EMPTY? %d\n", (int)Stack_isEmpty(s));
Stack_push(s, Obj_bool_create(false));
printf("EMPTY? %d\n", (int)Stack_isEmpty(s));
Stack_push(s, Obj_char_create('B'));
printf("POP %c\n", *(char*)Stack_pop(s));
Stack_push(s, Obj_int_create(666));
printf("POP %d\n", *(int*)Stack_pop(s));
Stack_push(s, Obj_double_create(321.654));
printf("TOP %f\n", *(double*)Stack_top(s));
Stack_delete(s);
s = NULL;
return EXIT_SUCCESS;
}
int main(void)
{
struct Stack *psStack1;
struct Stack *psStack2;
int iSuccessful;
/* Use a Stack object referenced by psStack1. */
psStack1 = Stack_new();
if (psStack1 == NULL) handleMemoryError();
iSuccessful = Stack_push(psStack1, 1.1);
if (! iSuccessful) handleMemoryError();
iSuccessful = Stack_push(psStack1, 2.2);
if (! iSuccessful) handleMemoryError();
iSuccessful = Stack_push(psStack1, 3.3);
if (! iSuccessful) handleMemoryError();
while (! Stack_isEmpty(psStack1))
printf("%g\n", Stack_pop(psStack1));
/***********************************************/
/* Cannot access the fields of *psStack1 here. */
/***********************************************/
Stack_free(psStack1);
/* Use a Stack object referenced by psStack2. */
psStack2 = Stack_new();
if (psStack2 == NULL) handleMemoryError();
iSuccessful = Stack_push(psStack2, 4.4);
if (! iSuccessful) handleMemoryError();
iSuccessful = Stack_push(psStack2, 5.5);
if (! iSuccessful) handleMemoryError();
iSuccessful = Stack_push(psStack2, 6.6);
if (! iSuccessful) handleMemoryError();
while (! Stack_isEmpty(psStack2))
printf("%g\n", Stack_pop(psStack2));
/***********************************************/
/* Cannot access the fields of *psStack2 here. */
/***********************************************/
Stack_free(psStack2);
return 0;
}
/* EVALUATE THE EXPRESSION: */
static void evaluate(Token_T* oTokens, int length) {
Stack_T oStack1;
Stack_T oStack2;
int i;
/* Create and use a Stack of tokens. */
assert(oTokens != NULL);
oStack1 = Stack_new();
oStack2 = Stack_new();
for (i = 0; i < length; i++) {
if (Token_getType(oTokens[i]) == VALUE)
Stack_push(oStack1, oTokens[i]);
else if (Stack_isEmpty(oStack2))
Stack_push(oStack2, oTokens[i]);
else if (precedence(oTokens[i], Stack_top(oStack2)))
Stack_push(oStack2, oTokens[i]);
else { /*ERROR HANDLING?*/
int result;
Token_T value_1 = (Token_T)Stack_top(oStack1);
Stack_pop(oStack1);
Token_T operator = (Token_T)Stack_top(oStack2);
Stack_pop(oStack2);
Token_T value_2 = (Token_T)Stack_top(oStack1);
Stack_pop(oStack1);
switch (Token_getType(operator))
{ /*LEFT TO RIGHT EVALUATION*/
case MULT:
result = Token_getValue(value_1) * Token_getValue(value_2);
break;
case DIV:
result = Token_getValue(value_2) / Token_getValue(value_1);
break;
case PLUS:
result = Token_getValue(value_1) + Token_getValue(value_2);
break;
case MINUS:
result = Token_getValue(value_2) - Token_getValue(value_1);
break;
default:
assert(0);
}
Stack_push(oStack1, Token_newToken(VALUE, result));
Stack_push(oStack2, oTokens[i]);
}
}
while (!Stack_isEmpty(oStack2)) { /*ERROR HANDLING? + MODULARITY MUCH????*/
int result;
Token_T value_1 = (Token_T)Stack_top(oStack1);
Stack_pop(oStack1);
Token_T operator = (Token_T)Stack_top(oStack2);
Stack_pop(oStack2);
Token_T value_2 = (Token_T)Stack_top(oStack1);
Stack_pop(oStack1);
switch (Token_getType(operator))
{ /*LEFT TO RIGHT EVALUATION*/
case MULT:
result = Token_getValue(value_1) * Token_getValue(value_2);
break;
case DIV:
result = Token_getValue(value_2) / Token_getValue(value_1);
break;
case PLUS:
result = Token_getValue(value_1) + Token_getValue(value_2);
break;
case MINUS:
result = Token_getValue(value_2) - Token_getValue(value_1);
break;
default:
assert(1);
}
Stack_push(oStack1, Token_newToken(VALUE, result));
}
printf("%d\n", Token_getValue((Token_T)Stack_top(oStack1)));
Stack_free(oStack1);
Stack_free(oStack2);
}
