1/*
2 * This file is part of ltrace.
3 * Copyright (C) 2011,2012 Petr Machata, Red Hat Inc.
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation; either version 2 of the
8 * License, or (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13 * General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
18 * 02110-1301 USA
19 */
20
21#include <assert.h>
22#include <string.h>
23#include <stdlib.h>
24
25#include "value_dict.h"
26#include "value.h"
27
28struct named_value
29{
30	const char *name;
31	struct value value;
32	int own_name;
33};
34
35void
36val_dict_init(struct value_dict *dict)
37{
38	VECT_INIT(&dict->numbered, struct value);
39	VECT_INIT(&dict->named, struct named_value);
40}
41
42static int
43value_clone_cb(struct value *tgt, const struct value *src, void *data)
44{
45	return value_clone(tgt, src);
46}
47
48static void
49value_dtor(struct value *val, void *data)
50{
51	value_destroy(val);
52}
53
54static int
55named_value_clone(struct named_value *tgt,
56		  const struct named_value *src, void *data)
57{
58	tgt->name = strdup(src->name);
59	if (tgt->name == NULL)
60		return -1;
61	tgt->own_name = 1;
62	if (value_clone(&tgt->value, &src->value) < 0) {
63		free((char *)tgt->name);
64		return -1;
65	}
66	return 0;
67}
68
69static void
70named_value_dtor(struct named_value *named, void *data)
71{
72	if (named->own_name)
73		free((char *)named->name);
74	value_destroy(&named->value);
75}
76
77int
78val_dict_clone(struct value_dict *target, struct value_dict *source)
79{
80	if (VECT_CLONE(&target->numbered, &source->numbered, struct value,
81		       value_clone_cb, value_dtor, NULL) < 0)
82		return -1;
83
84	if (VECT_CLONE(&target->named, &source->named, struct named_value,
85		       named_value_clone, named_value_dtor, NULL) < 0) {
86		VECT_DESTROY(&target->numbered, struct value, value_dtor, NULL);
87		return -1;
88	}
89
90	return 0;
91}
92
93int
94val_dict_push_next(struct value_dict *dict, struct value *val)
95{
96	return VECT_PUSHBACK(&dict->numbered, val);
97}
98
99int
100val_dict_push_named(struct value_dict *dict, struct value *val,
101		    const char *name, int own_name)
102{
103	if (own_name && (name = strdup(name)) == NULL)
104		return -1;
105	struct named_value element = { name, *val, own_name };
106	if (VECT_PUSHBACK(&dict->named, &element) < 0) {
107		if (own_name)
108			free((char *)name);
109		return -1;
110	}
111	return 0;
112}
113
114size_t
115val_dict_count(struct value_dict *dict)
116{
117	return vect_size(&dict->numbered);
118}
119
120struct value *
121val_dict_get_num(struct value_dict *dict, size_t num)
122{
123	assert(num < vect_size(&dict->numbered));
124	return VECT_ELEMENT(&dict->numbered, struct value, num);
125}
126
127struct value *
128val_dict_get_name(struct value_dict *dict, const char *name)
129{
130	size_t i;
131	for (i = 0; i < vect_size(&dict->named); ++i) {
132		struct named_value *element
133			= VECT_ELEMENT(&dict->named, struct named_value, i);
134		if (strcmp(element->name, name) == 0)
135			return &element->value;
136	}
137	return NULL;
138}
139
140void
141val_dict_destroy(struct value_dict *dict)
142{
143	if (dict == NULL)
144		return;
145
146	VECT_DESTROY(&dict->numbered, struct value, value_dtor, NULL);
147	VECT_DESTROY(&dict->named, struct named_value, named_value_dtor, NULL);
148}
149