1/*
2 * Copyright (c) 2009-2012 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
34typedef struct {
35 json_t json;
36 hashtable_t hashtable;
37 size_t serial;
38 int visited;
39} json_object_t;
40
41typedef 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
49typedef struct {
50 json_t json;
51 char *value;
52} json_string_t;
53
54typedef struct {
55 json_t json;
56 double value;
57} json_real_t;
58
59typedef struct {
60 json_t json;
61 json_int_t value;
62} json_integer_t;
63
64#define json_to_object(json_) container_of(json_, json_object_t, json)
65#define json_to_array(json_) container_of(json_, json_array_t, json)
66#define json_to_string(json_) container_of(json_, json_string_t, json)
67#define json_to_real(json_) container_of(json_, json_real_t, json)
68#define json_to_integer(json_) container_of(json_, json_integer_t, json)
69
70void jsonp_error_init(json_error_t *error, const char *source);
71void jsonp_error_set_source(json_error_t *error, const char *source);
72void jsonp_error_set(json_error_t *error, int line, int column,
73 size_t position, const char *msg, ...);
74void jsonp_error_vset(json_error_t *error, int line, int column,
75 size_t position, const char *msg, va_list ap);
76
77/* Locale independent string<->double conversions */
78int jsonp_strtod(strbuffer_t *strbuffer, double *out);
79int jsonp_dtostr(char *buffer, size_t size, double value);
80
81/* Wrappers for custom memory functions */
82void* jsonp_malloc(size_t size);
83void jsonp_free(void *ptr);
84char *jsonp_strdup(const char *str);
85
86/* Windows compatibility */
87#ifdef _WIN32
88#define snprintf _snprintf
89#define vsnprintf _vsnprintf
90#endif
91
92#endif
93