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#include <stdio.h>
#include <string.h>
#include "mem.h"
#include "stack.h"
#include "bfi.h"
#ifdef DEBUG
#define PRINT_PARAMS "'%c' (kood = %d)\n", c, c
#else
#define PRINT_PARAMS "%c", c
#endif
void intepret(char *program){
struct stack_st stack= { .len = 0, .size = 0, .arr = NULL};
int i = 0;
int length = 0;
while (program[i++] != '\0')
length++;
i = 0;
while (i < length){
switch(program[i]) {
case BF_READ: {
/* Loeme märgi standardsisendist (kasutaja sisestab konsooli). */
int c = getc(stdin);
if (EOF == c) {
/* Sisendi lõpu korral lõpetame interpretaatori töö. */
printf("Sisendi lõpp!\n");
return;
}
/* Lisame mällu loetud väärtuse. */
mem_set((char) c);
break;
}
case BF_RIGHT: {
mem_right();
break;
}
case BF_LEFT: {
mem_left();
break;
}
case BF_INCREASE: {
mem_inc();
break;
}
case BF_DECREASE: {
mem_dec();
break;
}
case BF_PRINT: {
char c = mem_get();
printf(PRINT_PARAMS);
break;
}
case BF_START_LOOP: {
stackPush(&stack, i);
int memVal = mem_get();
//printf("StartLoop! i = %d\n",i);
//printf("memVal: %d\n", mem_get());
//printf("stackVal: %d\n", stackPeek(&stack));
//printf("%c\n\n", program[i]);
//Skiping loop
if (memVal == 0){
int helpCounter = 1;
while (helpCounter != 0){
i++;
if (program[i] == '[')
helpCounter++;
if (program[i] == ']')
helpCounter--;
}
stackPop(&stack);
}
break;
}
case BF_END_LOOP: {
//printf("Endloop! i = %d\n",i);
//printf("memVal: %d\n", mem_get());
//printf("stackVal: %d\n", stackPeek(&stack));
//printf("%c\n\n", program[i]);
if (mem_get() != 0){
i = stackPop(&stack);
stackPush(&stack, i);
}
else
stackPop(&stack);
break;
}
} // Switch end
i++;
} // While loop end
}
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