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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* cmd_optimization.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: dkaiser <dkaiser@student.42heilbronn.de +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/04/13 16:42:34 by dkaiser #+# #+# */
/* Updated: 2024/04/16 17:33:54 by dkaiser ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft/ft_printf.h"
#include "libft/libft.h"
#include "push_swap.h"
#include <stdlib.h>
static enum e_pscmd get_cmd(t_list *cmd)
{
if (cmd)
return (*(enum e_pscmd*)cmd->content);
else
return NO_CMD;
}
static void optimize_redundant(t_psdata *data, enum e_pscmd cmd1, enum e_pscmd cmd2)
{
t_list *cur;
t_list *last;
int optimizations;
cur = data->cmds;
last = cur;
optimizations = 0;
if (!cur)
return ;
while (cur && cur->next)
{
if ((get_cmd(cur) == cmd1 && get_cmd(cur->next) == cmd2) || (get_cmd(cur) == cmd2 && get_cmd(cur->next) == cmd1))
{
last->next = cur->next->next;
ft_lstdelone(cur->next, free);
ft_lstdelone(cur, free);
optimizations++;
}
last = last->next;
if (last)
cur = last->next;
else
cur = NULL;
}
if (optimizations)
optimize_redundant(data, cmd1, cmd2);
}
static void lstinsert(t_list *list, t_list *elem)
{
t_list *next;
next = list->next;
list->next = elem;
elem->next = next;
}
static void fake_command(t_psdata *data, enum e_pscmd cmd)
{
if (cmd == PA)
{
if (data->b->size > 0)
stack_push(data->a, data->b);
}
else if (cmd == PB)
{
if (data->a->size > 0)
stack_push(data->b, data->a);
}
}
static void optimize_rotate(t_psdata *data)
{
t_list *cmd;
t_list *last_before;
t_list *new_elem;
enum e_pscmd *rra;
int ras;
int i;
cmd = data->cmds;
while (cmd)
{
ras = 0;
if (get_cmd(cmd) != RA)
last_before = cmd;
while (get_cmd(cmd) == RA)
{
ras++;
cmd = cmd->next;
}
if (ras > data->a->size / 2) {
i = 0;
while(i++ <= data->a->size)
{
rra = malloc(sizeof(enum e_pscmd));
if (!rra)
ft_printf("ERROR!!!");
*rra = RRA;
new_elem = ft_lstnew(rra);
if (!new_elem)
ft_printf("AAAAAAAAAAA");
lstinsert(last_before, new_elem);
}
}
fake_command(data, get_cmd(cmd));
cmd = cmd->next;
}
}
void optimize_commands(t_psdata *data)
{
/* ft_printf("SIZE A: %d\n", data->a->size); */
optimize_redundant(data, PA, PB);
optimize_rotate(data);
optimize_redundant(data, RA, RRA);
}
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