/*
 * rpn.c: evalutor of RPN formulas
 */

#include <stdint.h>
#include <syslog.h>
#include <stdlib.h>

#include "config.h"
#include "rpn.h"
#include "trie.h"

// Growing stack implementation
struct grow {
	struct trie_retval *arr;
	int64_t elems;
	int64_t alloc;
}

static struct grow *grow_init(void) {
	struct grow *g = malloc(sizeof(struct grow));
	if (g == NULL) {
		syslog(cfg_log_facility | LOG_ERR, "rpn: Could not initialize growing array: %m");
		return NULL;
	}
	g -> arr = NULL;
	g -> elems = 0;
	g -> alloc = 0;
	return g;
}

static bool grow_push (int64_t val, struct grow *stack) {
	if (stack -> alloc <= stack -> elems) {
		stack
	}
}

bool rpn_eval (char rpn[]) {
	
}