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#include "runner.h"
#include <stdio.h>
#include <stdlib.h>
#include <utils/memory/memory.h>
#include <utils/types.h>
bool runner(Instructions instructions) {
size_t stack_size = 0;
void **stack = a404m_malloc(stack_size * sizeof(void *));
size_t stack_inserted = 0;
for (size_t i = 0; i < instructions.size; ++i) {
if (!runInstruction(instructions.instructions[i], &stack, &stack_size,
&stack_inserted)) {
goto RETURN_ERROR;
}
}
free(stack);
return true;
RETURN_ERROR:
free(stack);
return false;
}
bool runInstruction(Instruction instruction, void ***restrict stack,
size_t *restrict stack_size,
size_t *restrict stack_inserted) {
switch (instruction.command) {
case COMMAND_PRINT: {
const SizedString *string = (*stack)[*stack_inserted - 1];
--*stack_inserted;
printf("%.*s", (int)string->size, string->str);
} break;
case COMMAND_PUSH_STRING: {
SizedString *string = instruction.operand;
if (*stack_inserted == *stack_size) {
*stack_size += *stack_size / 2 + 1;
*stack = a404m_realloc(*stack, *stack_size * sizeof(void *));
}
(*stack)[*stack_inserted] = string;
++*stack_inserted;
} break;
default:
fprintf(stderr, "unknown command '%d'\n", instruction.command);
return false;
}
return true;
}
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