1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
|
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* cmd_optimization.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: dkaiser <dkaiser@student.42heilbronn.de +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/04/13 16:42:34 by dkaiser #+# #+# */
/* Updated: 2024/04/17 12:15:41 by dkaiser ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft/ft_printf.h"
#include "libft/libft.h"
#include "push_swap.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 optimize_two_stack_ops(t_psdata *data, enum e_pscmd cmd1, enum e_pscmd cmd2, enum e_pscmd new_cmd)
{
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;
*(enum e_pscmd*)cur->next->content = new_cmd;
ft_lstdelone(cur, free);
optimizations++;
}
last = last->next;
if (last)
cur = last->next;
else
cur = NULL;
}
if (optimizations)
optimize_two_stack_ops(data, cmd1, cmd2, new_cmd);
}
void optimize_commands(t_psdata *data)
{
optimize_redundant(data, PA, PB);
optimize_redundant(data, RB, RRB);
optimize_redundant(data, RA, RRA);
optimize_two_stack_ops(data, RA, RB, RR);
}
|
