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comparison extern/jansson/src/jansson_private.h @ 0:8991989c4708

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Initial import
author David Demelier <markand@malikania.fr>
date Tue, 22 Mar 2016 18:26:05 +0100
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-1:000000000000 0:8991989c4708
1 /*
2 * Copyright (c) 2009-2014 Petri Lehtinen <petri@digip.org>
3 *
4 * Jansson is free software; you can redistribute it and/or modify
5 * it under the terms of the MIT license. See LICENSE for details.
6 */
7
8 #ifndef JANSSON_PRIVATE_H
9 #define JANSSON_PRIVATE_H
10
11 #include <stddef.h>
12 #include "jansson.h"
13 #include "hashtable.h"
14 #include "strbuffer.h"
15
16 #define container_of(ptr_, type_, member_) \
17 ((type_ *)((char *)ptr_ - offsetof(type_, member_)))
18
19 /* On some platforms, max() may already be defined */
20 #ifndef max
21 #define max(a, b) ((a) > (b) ? (a) : (b))
22 #endif
23
24 /* va_copy is a C99 feature. In C89 implementations, it's sometimes
25 available as __va_copy. If not, memcpy() should do the trick. */
26 #ifndef va_copy
27 #ifdef __va_copy
28 #define va_copy __va_copy
29 #else
30 #define va_copy(a, b) memcpy(&(a), &(b), sizeof(va_list))
31 #endif
32 #endif
33
34 typedef struct {
35 json_t json;
36 hashtable_t hashtable;
37 size_t serial;
38 int visited;
39 } json_object_t;
40
41 typedef struct {
42 json_t json;
43 size_t size;
44 size_t entries;
45 json_t **table;
46 int visited;
47 } json_array_t;
48
49 typedef struct {
50 json_t json;
51 char *value;
52 size_t length;
53 } json_string_t;
54
55 typedef struct {
56 json_t json;
57 double value;
58 } json_real_t;
59
60 typedef struct {
61 json_t json;
62 json_int_t value;
63 } json_integer_t;
64
65 #define json_to_object(json_) container_of(json_, json_object_t, json)
66 #define json_to_array(json_) container_of(json_, json_array_t, json)
67 #define json_to_string(json_) container_of(json_, json_string_t, json)
68 #define json_to_real(json_) container_of(json_, json_real_t, json)
69 #define json_to_integer(json_) container_of(json_, json_integer_t, json)
70
71 /* Create a string by taking ownership of an existing buffer */
72 json_t *jsonp_stringn_nocheck_own(const char *value, size_t len);
73
74 /* Error message formatting */
75 void jsonp_error_init(json_error_t *error, const char *source);
76 void jsonp_error_set_source(json_error_t *error, const char *source);
77 void jsonp_error_set(json_error_t *error, int line, int column,
78 size_t position, const char *msg, ...);
79 void jsonp_error_vset(json_error_t *error, int line, int column,
80 size_t position, const char *msg, va_list ap);
81
82 /* Locale independent string<->double conversions */
83 int jsonp_strtod(strbuffer_t *strbuffer, double *out);
84 int jsonp_dtostr(char *buffer, size_t size, double value, int prec);
85
86 /* Wrappers for custom memory functions */
87 void* jsonp_malloc(size_t size);
88 void jsonp_free(void *ptr);
89 char *jsonp_strndup(const char *str, size_t length);
90 char *jsonp_strdup(const char *str);
91 char *jsonp_strndup(const char *str, size_t len);
92
93 /* Windows compatibility */
94 #ifdef _WIN32
95 #define snprintf _snprintf
96 #define vsnprintf _vsnprintf
97 #endif
98
99 #endif