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
|
/*
* This file is part of ltrace.
* Copyright (C) 2011 Petr Machata, Red Hat Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#ifndef LENS_H
#define LENS_H
#include <stdio.h>
#include "forward.h"
struct lens {
/* Format VALUE into STREAM. The dictionary of all arguments
* is given for purposes of evaluating array lengths and other
* dynamic expressions. Returns number of characters
* outputted, -1 in case of failure. */
int (*format_cb)(struct lens *lens, FILE *stream, struct value *value,
struct value_dict *arguments);
/* Erase any memory allocated for LENS. Keep the LENS pointer
* itself intact. */
void (*destroy_cb)(struct lens *lens);
};
/* Extracts a lens from VALUE and calls lens_format on that. */
int format_argument(FILE *stream, struct value *value,
struct value_dict *arguments);
/* Calls format callback associated with LENS. */
int lens_format(struct lens *lens, FILE *stream, struct value *value,
struct value_dict *arguments);
/* Calls destroy callback associated with LENS. */
void lens_destroy(struct lens *lens);
#endif /* LENS_H */
|
