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
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    size_t length;
53} json_string_t;
54
55typedef struct {
56    json_t json;
57    double value;
58} json_real_t;
59
60typedef 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 */
72json_t *jsonp_stringn_nocheck_own(const char *value, size_t len);
73
74/* Error message formatting */
75void jsonp_error_init(json_error_t *error, const char *source);
76void jsonp_error_set_source(json_error_t *error, const char *source);
77void jsonp_error_set(json_error_t *error, int line, int column,
78                     size_t position, const char *msg, ...);
79void 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 */
83int jsonp_strtod(strbuffer_t *strbuffer, double *out);
84int jsonp_dtostr(char *buffer, size_t size, double value, int prec);
85
86/* Wrappers for custom memory functions */
87void* jsonp_malloc(size_t size);
88void jsonp_free(void *ptr);
89char *jsonp_strndup(const char *str, size_t length);
90char *jsonp_strdup(const char *str);
91char *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
100